PMC:7445716 / 74510-77255 JSONTXT

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    LitCovid-PD-FMA-UBERON

    {"project":"LitCovid-PD-FMA-UBERON","denotations":[{"id":"T636","span":{"begin":1639,"end":1648},"obj":"Body_part"},{"id":"T637","span":{"begin":1784,"end":1789},"obj":"Body_part"},{"id":"T638","span":{"begin":1836,"end":1840},"obj":"Body_part"},{"id":"T639","span":{"begin":2547,"end":2552},"obj":"Body_part"}],"attributes":[{"id":"A636","pred":"fma_id","subj":"T636","obj":"http://purl.org/sig/ont/fma/fma84050"},{"id":"A637","pred":"fma_id","subj":"T637","obj":"http://purl.org/sig/ont/fma/fma9670"},{"id":"A638","pred":"fma_id","subj":"T638","obj":"http://purl.org/sig/ont/fma/fma86583"},{"id":"A639","pred":"fma_id","subj":"T639","obj":"http://purl.org/sig/ont/fma/fma9576"}],"text":"In the present study, mean age at onset in patients with GBS largely overlapped that of classic COVID-19 subjects [70, 71]. However, pediatric cases with GBS have been increasingly reported in the literature [21, 27, 35, 41], suggesting that, with the spreading of the pandemic, a broader age range might be affected. Moreover, we found a higher prevalence of GBS in males compared to females, as previously reported for Zika virus–GBS [72]. This finding may also reflect the gender epidemiology of SARS-CoV-2. In this regard, males typically show a worse COVID-19 outcome compared to the females [70, 71], possibly due to a generally shorter life expectancy or to higher circulating Angiotensin-Converting-Enzyme 2 (ACE2) levels, the cellular receptor for SARS-CoV-2, in the former compared to the latter [71]. Moreover, given that GBS is a rare disease [57] the epidemiological distribution of the reported cases seems to reflect current worldwide outbreaks, with Europe being the “hottest” spot in March–May 2020 and USA together with Asia in the following period [73, 74]. On another issue, despite a few GBS cases seemed to have a para-infectious profile [10, 37, 38, 40, 55, 56] as described for Zika virus [75], all other reported patients developed neurological symptoms with a typical latency after COVID-19 (median time 14 days). This feature, together with the frequently reported negative nasopharyngeal swab at GBS onset [22, 24, 36, 44, 45, 52] and clinical improvement after IVIG therapy, seems to support the notion of a prominent post-infectious immune-mediated mechanism. However, in this context, the massive release of cytokines in COVID-19 may also contribute to the amplification of the dysimmune process underlying GBS [76, 77]. In this regard, the increase of blood inflammatory markers (e.g., CRP, IL-6, TNF-α, IL-1, etc.) in GBS tested cases may reinforce the hypothesis of a systemic inflammatory storm in COVID-19 [76, 77]. However, given the limited data, we could not perform an accurate analysis of the distribution and, eventually, prognostic value of inflammatory markers in COVID-19-associated GBS. Moreover, we cannot exclude that in cases with GBS developing before or together with COVID-19 symptoms, the disease might have progressed sub-clinically in the early phase to manifest afterwards with its typical systemic clinical picture. Indeed, two cases [10, 12], who tested positive for SARS-CoV-2, never developed COVID-19 respiratory or systemic symptoms and one of them showed an asymptomatic pneumonia at chest-CT [12]. However, only more extensive epidemiological and translational studies, with the aim to compare the characteristics of GBS associated or not with COVID-19, could clarify these issues."}

    LitCovid-PD-UBERON

    {"project":"LitCovid-PD-UBERON","denotations":[{"id":"T248","span":{"begin":1784,"end":1789},"obj":"Body_part"},{"id":"T249","span":{"begin":2462,"end":2485},"obj":"Body_part"},{"id":"T250","span":{"begin":2547,"end":2552},"obj":"Body_part"}],"attributes":[{"id":"A248","pred":"uberon_id","subj":"T248","obj":"http://purl.obolibrary.org/obo/UBERON_0000178"},{"id":"A249","pred":"uberon_id","subj":"T249","obj":"http://purl.obolibrary.org/obo/UBERON_0001004"},{"id":"A250","pred":"uberon_id","subj":"T250","obj":"http://purl.obolibrary.org/obo/UBERON_0001443"}],"text":"In the present study, mean age at onset in patients with GBS largely overlapped that of classic COVID-19 subjects [70, 71]. However, pediatric cases with GBS have been increasingly reported in the literature [21, 27, 35, 41], suggesting that, with the spreading of the pandemic, a broader age range might be affected. Moreover, we found a higher prevalence of GBS in males compared to females, as previously reported for Zika virus–GBS [72]. This finding may also reflect the gender epidemiology of SARS-CoV-2. In this regard, males typically show a worse COVID-19 outcome compared to the females [70, 71], possibly due to a generally shorter life expectancy or to higher circulating Angiotensin-Converting-Enzyme 2 (ACE2) levels, the cellular receptor for SARS-CoV-2, in the former compared to the latter [71]. Moreover, given that GBS is a rare disease [57] the epidemiological distribution of the reported cases seems to reflect current worldwide outbreaks, with Europe being the “hottest” spot in March–May 2020 and USA together with Asia in the following period [73, 74]. On another issue, despite a few GBS cases seemed to have a para-infectious profile [10, 37, 38, 40, 55, 56] as described for Zika virus [75], all other reported patients developed neurological symptoms with a typical latency after COVID-19 (median time 14 days). This feature, together with the frequently reported negative nasopharyngeal swab at GBS onset [22, 24, 36, 44, 45, 52] and clinical improvement after IVIG therapy, seems to support the notion of a prominent post-infectious immune-mediated mechanism. However, in this context, the massive release of cytokines in COVID-19 may also contribute to the amplification of the dysimmune process underlying GBS [76, 77]. In this regard, the increase of blood inflammatory markers (e.g., CRP, IL-6, TNF-α, IL-1, etc.) in GBS tested cases may reinforce the hypothesis of a systemic inflammatory storm in COVID-19 [76, 77]. However, given the limited data, we could not perform an accurate analysis of the distribution and, eventually, prognostic value of inflammatory markers in COVID-19-associated GBS. Moreover, we cannot exclude that in cases with GBS developing before or together with COVID-19 symptoms, the disease might have progressed sub-clinically in the early phase to manifest afterwards with its typical systemic clinical picture. Indeed, two cases [10, 12], who tested positive for SARS-CoV-2, never developed COVID-19 respiratory or systemic symptoms and one of them showed an asymptomatic pneumonia at chest-CT [12]. However, only more extensive epidemiological and translational studies, with the aim to compare the characteristics of GBS associated or not with COVID-19, could clarify these issues."}

    LitCovid-PD-MONDO

    {"project":"LitCovid-PD-MONDO","denotations":[{"id":"T679","span":{"begin":57,"end":60},"obj":"Disease"},{"id":"T680","span":{"begin":96,"end":104},"obj":"Disease"},{"id":"T681","span":{"begin":154,"end":157},"obj":"Disease"},{"id":"T682","span":{"begin":360,"end":363},"obj":"Disease"},{"id":"T683","span":{"begin":421,"end":425},"obj":"Disease"},{"id":"T684","span":{"begin":432,"end":435},"obj":"Disease"},{"id":"T685","span":{"begin":499,"end":507},"obj":"Disease"},{"id":"T686","span":{"begin":556,"end":564},"obj":"Disease"},{"id":"T687","span":{"begin":757,"end":765},"obj":"Disease"},{"id":"T688","span":{"begin":833,"end":836},"obj":"Disease"},{"id":"T689","span":{"begin":1109,"end":1112},"obj":"Disease"},{"id":"T690","span":{"begin":1141,"end":1151},"obj":"Disease"},{"id":"T691","span":{"begin":1202,"end":1206},"obj":"Disease"},{"id":"T692","span":{"begin":1308,"end":1316},"obj":"Disease"},{"id":"T693","span":{"begin":1424,"end":1427},"obj":"Disease"},{"id":"T694","span":{"begin":1552,"end":1562},"obj":"Disease"},{"id":"T695","span":{"begin":1652,"end":1660},"obj":"Disease"},{"id":"T696","span":{"begin":1738,"end":1741},"obj":"Disease"},{"id":"T697","span":{"begin":1851,"end":1854},"obj":"Disease"},{"id":"T698","span":{"begin":1933,"end":1941},"obj":"Disease"},{"id":"T699","span":{"begin":2108,"end":2116},"obj":"Disease"},{"id":"T700","span":{"begin":2128,"end":2131},"obj":"Disease"},{"id":"T701","span":{"begin":2180,"end":2183},"obj":"Disease"},{"id":"T702","span":{"begin":2219,"end":2227},"obj":"Disease"},{"id":"T703","span":{"begin":2425,"end":2433},"obj":"Disease"},{"id":"T704","span":{"begin":2453,"end":2461},"obj":"Disease"},{"id":"T705","span":{"begin":2534,"end":2543},"obj":"Disease"},{"id":"T706","span":{"begin":2681,"end":2684},"obj":"Disease"},{"id":"T707","span":{"begin":2708,"end":2716},"obj":"Disease"}],"attributes":[{"id":"A679","pred":"mondo_id","subj":"T679","obj":"http://purl.obolibrary.org/obo/MONDO_0016218"},{"id":"A680","pred":"mondo_id","subj":"T680","obj":"http://purl.obolibrary.org/obo/MONDO_0100096"},{"id":"A681","pred":"mondo_id","subj":"T681","obj":"http://purl.obolibrary.org/obo/MONDO_0016218"},{"id":"A682","pred":"mondo_id","subj":"T682","obj":"http://purl.obolibrary.org/obo/MONDO_0016218"},{"id":"A683","pred":"mondo_id","subj":"T683","obj":"http://purl.obolibrary.org/obo/MONDO_0018661"},{"id":"A684","pred":"mondo_id","subj":"T684","obj":"http://purl.obolibrary.org/obo/MONDO_0016218"},{"id":"A685","pred":"mondo_id","subj":"T685","obj":"http://purl.obolibrary.org/obo/MONDO_0005091"},{"id":"A686","pred":"mondo_id","subj":"T686","obj":"http://purl.obolibrary.org/obo/MONDO_0100096"},{"id":"A687","pred":"mondo_id","subj":"T687","obj":"http://purl.obolibrary.org/obo/MONDO_0005091"},{"id":"A688","pred":"mondo_id","subj":"T688","obj":"http://purl.obolibrary.org/obo/MONDO_0016218"},{"id":"A689","pred":"mondo_id","subj":"T689","obj":"http://purl.obolibrary.org/obo/MONDO_0016218"},{"id":"A690","pred":"mondo_id","subj":"T690","obj":"http://purl.obolibrary.org/obo/MONDO_0005550"},{"id":"A691","pred":"mondo_id","subj":"T691","obj":"http://purl.obolibrary.org/obo/MONDO_0018661"},{"id":"A692","pred":"mondo_id","subj":"T692","obj":"http://purl.obolibrary.org/obo/MONDO_0100096"},{"id":"A693","pred":"mondo_id","subj":"T693","obj":"http://purl.obolibrary.org/obo/MONDO_0016218"},{"id":"A694","pred":"mondo_id","subj":"T694","obj":"http://purl.obolibrary.org/obo/MONDO_0005550"},{"id":"A695","pred":"mondo_id","subj":"T695","obj":"http://purl.obolibrary.org/obo/MONDO_0100096"},{"id":"A696","pred":"mondo_id","subj":"T696","obj":"http://purl.obolibrary.org/obo/MONDO_0016218"},{"id":"A697","pred":"mondo_id","subj":"T697","obj":"http://purl.obolibrary.org/obo/MONDO_0016218"},{"id":"A698","pred":"mondo_id","subj":"T698","obj":"http://purl.obolibrary.org/obo/MONDO_0100096"},{"id":"A699","pred":"mondo_id","subj":"T699","obj":"http://purl.obolibrary.org/obo/MONDO_0100096"},{"id":"A700","pred":"mondo_id","subj":"T700","obj":"http://purl.obolibrary.org/obo/MONDO_0016218"},{"id":"A701","pred":"mondo_id","subj":"T701","obj":"http://purl.obolibrary.org/obo/MONDO_0016218"},{"id":"A702","pred":"mondo_id","subj":"T702","obj":"http://purl.obolibrary.org/obo/MONDO_0100096"},{"id":"A703","pred":"mondo_id","subj":"T703","obj":"http://purl.obolibrary.org/obo/MONDO_0005091"},{"id":"A704","pred":"mondo_id","subj":"T704","obj":"http://purl.obolibrary.org/obo/MONDO_0100096"},{"id":"A705","pred":"mondo_id","subj":"T705","obj":"http://purl.obolibrary.org/obo/MONDO_0005249"},{"id":"A706","pred":"mondo_id","subj":"T706","obj":"http://purl.obolibrary.org/obo/MONDO_0016218"},{"id":"A707","pred":"mondo_id","subj":"T707","obj":"http://purl.obolibrary.org/obo/MONDO_0100096"}],"text":"In the present study, mean age at onset in patients with GBS largely overlapped that of classic COVID-19 subjects [70, 71]. However, pediatric cases with GBS have been increasingly reported in the literature [21, 27, 35, 41], suggesting that, with the spreading of the pandemic, a broader age range might be affected. Moreover, we found a higher prevalence of GBS in males compared to females, as previously reported for Zika virus–GBS [72]. This finding may also reflect the gender epidemiology of SARS-CoV-2. In this regard, males typically show a worse COVID-19 outcome compared to the females [70, 71], possibly due to a generally shorter life expectancy or to higher circulating Angiotensin-Converting-Enzyme 2 (ACE2) levels, the cellular receptor for SARS-CoV-2, in the former compared to the latter [71]. Moreover, given that GBS is a rare disease [57] the epidemiological distribution of the reported cases seems to reflect current worldwide outbreaks, with Europe being the “hottest” spot in March–May 2020 and USA together with Asia in the following period [73, 74]. On another issue, despite a few GBS cases seemed to have a para-infectious profile [10, 37, 38, 40, 55, 56] as described for Zika virus [75], all other reported patients developed neurological symptoms with a typical latency after COVID-19 (median time 14 days). This feature, together with the frequently reported negative nasopharyngeal swab at GBS onset [22, 24, 36, 44, 45, 52] and clinical improvement after IVIG therapy, seems to support the notion of a prominent post-infectious immune-mediated mechanism. However, in this context, the massive release of cytokines in COVID-19 may also contribute to the amplification of the dysimmune process underlying GBS [76, 77]. In this regard, the increase of blood inflammatory markers (e.g., CRP, IL-6, TNF-α, IL-1, etc.) in GBS tested cases may reinforce the hypothesis of a systemic inflammatory storm in COVID-19 [76, 77]. However, given the limited data, we could not perform an accurate analysis of the distribution and, eventually, prognostic value of inflammatory markers in COVID-19-associated GBS. Moreover, we cannot exclude that in cases with GBS developing before or together with COVID-19 symptoms, the disease might have progressed sub-clinically in the early phase to manifest afterwards with its typical systemic clinical picture. Indeed, two cases [10, 12], who tested positive for SARS-CoV-2, never developed COVID-19 respiratory or systemic symptoms and one of them showed an asymptomatic pneumonia at chest-CT [12]. However, only more extensive epidemiological and translational studies, with the aim to compare the characteristics of GBS associated or not with COVID-19, could clarify these issues."}

    LitCovid-PD-CLO

    {"project":"LitCovid-PD-CLO","denotations":[{"id":"T664","span":{"begin":119,"end":121},"obj":"http://purl.obolibrary.org/obo/CLO_0054055"},{"id":"T665","span":{"begin":213,"end":215},"obj":"http://purl.obolibrary.org/obo/CLO_0050509"},{"id":"T666","span":{"begin":217,"end":219},"obj":"http://purl.obolibrary.org/obo/CLO_0001000"},{"id":"T667","span":{"begin":221,"end":223},"obj":"http://purl.obolibrary.org/obo/CLO_0053794"},{"id":"T668","span":{"begin":279,"end":280},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"},{"id":"T669","span":{"begin":337,"end":338},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"},{"id":"T670","span":{"begin":367,"end":372},"obj":"http://purl.obolibrary.org/obo/UBERON_0003101"},{"id":"T671","span":{"begin":367,"end":372},"obj":"http://www.ebi.ac.uk/efo/EFO_0000970"},{"id":"T672","span":{"begin":385,"end":392},"obj":"http://purl.obolibrary.org/obo/UBERON_0003100"},{"id":"T673","span":{"begin":426,"end":431},"obj":"http://purl.obolibrary.org/obo/NCBITaxon_10239"},{"id":"T674","span":{"begin":527,"end":532},"obj":"http://purl.obolibrary.org/obo/UBERON_0003101"},{"id":"T675","span":{"begin":527,"end":532},"obj":"http://www.ebi.ac.uk/efo/EFO_0000970"},{"id":"T676","span":{"begin":548,"end":549},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"},{"id":"T677","span":{"begin":589,"end":596},"obj":"http://purl.obolibrary.org/obo/UBERON_0003100"},{"id":"T678","span":{"begin":602,"end":604},"obj":"http://purl.obolibrary.org/obo/CLO_0054055"},{"id":"T679","span":{"begin":623,"end":624},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"},{"id":"T680","span":{"begin":807,"end":809},"obj":"http://purl.obolibrary.org/obo/CLO_0054055"},{"id":"T681","span":{"begin":840,"end":841},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"},{"id":"T682","span":{"begin":1103,"end":1104},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"},{"id":"T683","span":{"begin":1134,"end":1135},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"},{"id":"T684","span":{"begin":1207,"end":1212},"obj":"http://purl.obolibrary.org/obo/NCBITaxon_10239"},{"id":"T685","span":{"begin":1284,"end":1285},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"},{"id":"T686","span":{"begin":1435,"end":1437},"obj":"http://purl.obolibrary.org/obo/CLO_0050507"},{"id":"T687","span":{"begin":1443,"end":1445},"obj":"http://purl.obolibrary.org/obo/CLO_0001313"},{"id":"T688","span":{"begin":1451,"end":1453},"obj":"http://purl.obolibrary.org/obo/CLO_0053799"},{"id":"T689","span":{"begin":1455,"end":1457},"obj":"http://purl.obolibrary.org/obo/CLO_0001407"},{"id":"T690","span":{"begin":1535,"end":1536},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"},{"id":"T691","span":{"begin":1784,"end":1789},"obj":"http://purl.obolibrary.org/obo/UBERON_0000178"},{"id":"T692","span":{"begin":1784,"end":1789},"obj":"http://www.ebi.ac.uk/efo/EFO_0000296"},{"id":"T693","span":{"begin":1855,"end":1861},"obj":"http://purl.obolibrary.org/obo/UBERON_0000473"},{"id":"T694","span":{"begin":1900,"end":1901},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"},{"id":"T695","span":{"begin":2405,"end":2411},"obj":"http://purl.obolibrary.org/obo/UBERON_0000473"},{"id":"T696","span":{"begin":2462,"end":2485},"obj":"http://purl.obolibrary.org/obo/UBERON_0001004"},{"id":"T697","span":{"begin":2547,"end":2552},"obj":"http://www.ebi.ac.uk/efo/EFO_0000965"},{"id":"T698","span":{"begin":2643,"end":2646},"obj":"http://purl.obolibrary.org/obo/PR_000001343"}],"text":"In the present study, mean age at onset in patients with GBS largely overlapped that of classic COVID-19 subjects [70, 71]. However, pediatric cases with GBS have been increasingly reported in the literature [21, 27, 35, 41], suggesting that, with the spreading of the pandemic, a broader age range might be affected. Moreover, we found a higher prevalence of GBS in males compared to females, as previously reported for Zika virus–GBS [72]. This finding may also reflect the gender epidemiology of SARS-CoV-2. In this regard, males typically show a worse COVID-19 outcome compared to the females [70, 71], possibly due to a generally shorter life expectancy or to higher circulating Angiotensin-Converting-Enzyme 2 (ACE2) levels, the cellular receptor for SARS-CoV-2, in the former compared to the latter [71]. Moreover, given that GBS is a rare disease [57] the epidemiological distribution of the reported cases seems to reflect current worldwide outbreaks, with Europe being the “hottest” spot in March–May 2020 and USA together with Asia in the following period [73, 74]. On another issue, despite a few GBS cases seemed to have a para-infectious profile [10, 37, 38, 40, 55, 56] as described for Zika virus [75], all other reported patients developed neurological symptoms with a typical latency after COVID-19 (median time 14 days). This feature, together with the frequently reported negative nasopharyngeal swab at GBS onset [22, 24, 36, 44, 45, 52] and clinical improvement after IVIG therapy, seems to support the notion of a prominent post-infectious immune-mediated mechanism. However, in this context, the massive release of cytokines in COVID-19 may also contribute to the amplification of the dysimmune process underlying GBS [76, 77]. In this regard, the increase of blood inflammatory markers (e.g., CRP, IL-6, TNF-α, IL-1, etc.) in GBS tested cases may reinforce the hypothesis of a systemic inflammatory storm in COVID-19 [76, 77]. However, given the limited data, we could not perform an accurate analysis of the distribution and, eventually, prognostic value of inflammatory markers in COVID-19-associated GBS. Moreover, we cannot exclude that in cases with GBS developing before or together with COVID-19 symptoms, the disease might have progressed sub-clinically in the early phase to manifest afterwards with its typical systemic clinical picture. Indeed, two cases [10, 12], who tested positive for SARS-CoV-2, never developed COVID-19 respiratory or systemic symptoms and one of them showed an asymptomatic pneumonia at chest-CT [12]. However, only more extensive epidemiological and translational studies, with the aim to compare the characteristics of GBS associated or not with COVID-19, could clarify these issues."}

    LitCovid-PD-CHEBI

    {"project":"LitCovid-PD-CHEBI","denotations":[{"id":"T359","span":{"begin":684,"end":695},"obj":"Chemical"},{"id":"T360","span":{"begin":1823,"end":1825},"obj":"Chemical"},{"id":"T362","span":{"begin":1836,"end":1838},"obj":"Chemical"}],"attributes":[{"id":"A359","pred":"chebi_id","subj":"T359","obj":"http://purl.obolibrary.org/obo/CHEBI_2719"},{"id":"A360","pred":"chebi_id","subj":"T360","obj":"http://purl.obolibrary.org/obo/CHEBI_63895"},{"id":"A361","pred":"chebi_id","subj":"T360","obj":"http://purl.obolibrary.org/obo/CHEBI_74072"},{"id":"A362","pred":"chebi_id","subj":"T362","obj":"http://purl.obolibrary.org/obo/CHEBI_63895"},{"id":"A363","pred":"chebi_id","subj":"T362","obj":"http://purl.obolibrary.org/obo/CHEBI_74072"}],"text":"In the present study, mean age at onset in patients with GBS largely overlapped that of classic COVID-19 subjects [70, 71]. However, pediatric cases with GBS have been increasingly reported in the literature [21, 27, 35, 41], suggesting that, with the spreading of the pandemic, a broader age range might be affected. Moreover, we found a higher prevalence of GBS in males compared to females, as previously reported for Zika virus–GBS [72]. This finding may also reflect the gender epidemiology of SARS-CoV-2. In this regard, males typically show a worse COVID-19 outcome compared to the females [70, 71], possibly due to a generally shorter life expectancy or to higher circulating Angiotensin-Converting-Enzyme 2 (ACE2) levels, the cellular receptor for SARS-CoV-2, in the former compared to the latter [71]. Moreover, given that GBS is a rare disease [57] the epidemiological distribution of the reported cases seems to reflect current worldwide outbreaks, with Europe being the “hottest” spot in March–May 2020 and USA together with Asia in the following period [73, 74]. On another issue, despite a few GBS cases seemed to have a para-infectious profile [10, 37, 38, 40, 55, 56] as described for Zika virus [75], all other reported patients developed neurological symptoms with a typical latency after COVID-19 (median time 14 days). This feature, together with the frequently reported negative nasopharyngeal swab at GBS onset [22, 24, 36, 44, 45, 52] and clinical improvement after IVIG therapy, seems to support the notion of a prominent post-infectious immune-mediated mechanism. However, in this context, the massive release of cytokines in COVID-19 may also contribute to the amplification of the dysimmune process underlying GBS [76, 77]. In this regard, the increase of blood inflammatory markers (e.g., CRP, IL-6, TNF-α, IL-1, etc.) in GBS tested cases may reinforce the hypothesis of a systemic inflammatory storm in COVID-19 [76, 77]. However, given the limited data, we could not perform an accurate analysis of the distribution and, eventually, prognostic value of inflammatory markers in COVID-19-associated GBS. Moreover, we cannot exclude that in cases with GBS developing before or together with COVID-19 symptoms, the disease might have progressed sub-clinically in the early phase to manifest afterwards with its typical systemic clinical picture. Indeed, two cases [10, 12], who tested positive for SARS-CoV-2, never developed COVID-19 respiratory or systemic symptoms and one of them showed an asymptomatic pneumonia at chest-CT [12]. However, only more extensive epidemiological and translational studies, with the aim to compare the characteristics of GBS associated or not with COVID-19, could clarify these issues."}

    LitCovid-PD-GO-BP

    {"project":"LitCovid-PD-GO-BP","denotations":[{"id":"T30","span":{"begin":2611,"end":2624},"obj":"http://purl.obolibrary.org/obo/GO_0006412"}],"text":"In the present study, mean age at onset in patients with GBS largely overlapped that of classic COVID-19 subjects [70, 71]. However, pediatric cases with GBS have been increasingly reported in the literature [21, 27, 35, 41], suggesting that, with the spreading of the pandemic, a broader age range might be affected. Moreover, we found a higher prevalence of GBS in males compared to females, as previously reported for Zika virus–GBS [72]. This finding may also reflect the gender epidemiology of SARS-CoV-2. In this regard, males typically show a worse COVID-19 outcome compared to the females [70, 71], possibly due to a generally shorter life expectancy or to higher circulating Angiotensin-Converting-Enzyme 2 (ACE2) levels, the cellular receptor for SARS-CoV-2, in the former compared to the latter [71]. Moreover, given that GBS is a rare disease [57] the epidemiological distribution of the reported cases seems to reflect current worldwide outbreaks, with Europe being the “hottest” spot in March–May 2020 and USA together with Asia in the following period [73, 74]. On another issue, despite a few GBS cases seemed to have a para-infectious profile [10, 37, 38, 40, 55, 56] as described for Zika virus [75], all other reported patients developed neurological symptoms with a typical latency after COVID-19 (median time 14 days). This feature, together with the frequently reported negative nasopharyngeal swab at GBS onset [22, 24, 36, 44, 45, 52] and clinical improvement after IVIG therapy, seems to support the notion of a prominent post-infectious immune-mediated mechanism. However, in this context, the massive release of cytokines in COVID-19 may also contribute to the amplification of the dysimmune process underlying GBS [76, 77]. In this regard, the increase of blood inflammatory markers (e.g., CRP, IL-6, TNF-α, IL-1, etc.) in GBS tested cases may reinforce the hypothesis of a systemic inflammatory storm in COVID-19 [76, 77]. However, given the limited data, we could not perform an accurate analysis of the distribution and, eventually, prognostic value of inflammatory markers in COVID-19-associated GBS. Moreover, we cannot exclude that in cases with GBS developing before or together with COVID-19 symptoms, the disease might have progressed sub-clinically in the early phase to manifest afterwards with its typical systemic clinical picture. Indeed, two cases [10, 12], who tested positive for SARS-CoV-2, never developed COVID-19 respiratory or systemic symptoms and one of them showed an asymptomatic pneumonia at chest-CT [12]. However, only more extensive epidemiological and translational studies, with the aim to compare the characteristics of GBS associated or not with COVID-19, could clarify these issues."}

    LitCovid-PubTator

    {"project":"LitCovid-PubTator","denotations":[{"id":"1136","span":{"begin":683,"end":714},"obj":"Gene"},{"id":"1137","span":{"begin":716,"end":720},"obj":"Gene"},{"id":"1138","span":{"begin":1817,"end":1820},"obj":"Gene"},{"id":"1139","span":{"begin":1822,"end":1826},"obj":"Gene"},{"id":"1140","span":{"begin":1828,"end":1833},"obj":"Gene"},{"id":"1141","span":{"begin":1835,"end":1839},"obj":"Gene"},{"id":"1142","span":{"begin":42,"end":50},"obj":"Species"},{"id":"1143","span":{"begin":420,"end":430},"obj":"Species"},{"id":"1144","span":{"begin":498,"end":508},"obj":"Species"},{"id":"1145","span":{"begin":756,"end":766},"obj":"Species"},{"id":"1146","span":{"begin":1201,"end":1211},"obj":"Species"},{"id":"1147","span":{"begin":1237,"end":1245},"obj":"Species"},{"id":"1148","span":{"begin":2424,"end":2434},"obj":"Species"},{"id":"1149","span":{"begin":2461,"end":2472},"obj":"Species"},{"id":"1150","span":{"begin":95,"end":103},"obj":"Disease"},{"id":"1151","span":{"begin":555,"end":563},"obj":"Disease"},{"id":"1152","span":{"begin":1256,"end":1277},"obj":"Disease"},{"id":"1153","span":{"begin":1307,"end":1315},"obj":"Disease"},{"id":"1154","span":{"begin":1651,"end":1659},"obj":"Disease"},{"id":"1155","span":{"begin":1708,"end":1717},"obj":"Disease"},{"id":"1156","span":{"begin":1932,"end":1940},"obj":"Disease"},{"id":"1157","span":{"begin":2107,"end":2115},"obj":"Disease"},{"id":"1158","span":{"begin":2218,"end":2226},"obj":"Disease"},{"id":"1159","span":{"begin":2452,"end":2460},"obj":"Disease"},{"id":"1160","span":{"begin":2533,"end":2542},"obj":"Disease"},{"id":"1161","span":{"begin":2707,"end":2715},"obj":"Disease"}],"attributes":[{"id":"A1136","pred":"tao:has_database_id","subj":"1136","obj":"Gene:59272"},{"id":"A1137","pred":"tao:has_database_id","subj":"1137","obj":"Gene:59272"},{"id":"A1138","pred":"tao:has_database_id","subj":"1138","obj":"Gene:1401"},{"id":"A1139","pred":"tao:has_database_id","subj":"1139","obj":"Gene:3569"},{"id":"A1140","pred":"tao:has_database_id","subj":"1140","obj":"Gene:7124"},{"id":"A1141","pred":"tao:has_database_id","subj":"1141","obj":"Gene:3552"},{"id":"A1142","pred":"tao:has_database_id","subj":"1142","obj":"Tax:9606"},{"id":"A1143","pred":"tao:has_database_id","subj":"1143","obj":"Tax:64320"},{"id":"A1144","pred":"tao:has_database_id","subj":"1144","obj":"Tax:2697049"},{"id":"A1145","pred":"tao:has_database_id","subj":"1145","obj":"Tax:2697049"},{"id":"A1146","pred":"tao:has_database_id","subj":"1146","obj":"Tax:64320"},{"id":"A1147","pred":"tao:has_database_id","subj":"1147","obj":"Tax:9606"},{"id":"A1148","pred":"tao:has_database_id","subj":"1148","obj":"Tax:2697049"},{"id":"A1149","pred":"tao:has_database_id","subj":"1149","obj":"Tax:12814"},{"id":"A1150","pred":"tao:has_database_id","subj":"1150","obj":"MESH:C000657245"},{"id":"A1151","pred":"tao:has_database_id","subj":"1151","obj":"MESH:C000657245"},{"id":"A1152","pred":"tao:has_database_id","subj":"1152","obj":"MESH:D009422"},{"id":"A1153","pred":"tao:has_database_id","subj":"1153","obj":"MESH:C000657245"},{"id":"A1154","pred":"tao:has_database_id","subj":"1154","obj":"MESH:C000657245"},{"id":"A1156","pred":"tao:has_database_id","subj":"1156","obj":"MESH:C000657245"},{"id":"A1157","pred":"tao:has_database_id","subj":"1157","obj":"MESH:C000657245"},{"id":"A1158","pred":"tao:has_database_id","subj":"1158","obj":"MESH:C000657245"},{"id":"A1159","pred":"tao:has_database_id","subj":"1159","obj":"MESH:C000657245"},{"id":"A1160","pred":"tao:has_database_id","subj":"1160","obj":"MESH:D011014"},{"id":"A1161","pred":"tao:has_database_id","subj":"1161","obj":"MESH:C000657245"}],"namespaces":[{"prefix":"Tax","uri":"https://www.ncbi.nlm.nih.gov/taxonomy/"},{"prefix":"MESH","uri":"https://id.nlm.nih.gov/mesh/"},{"prefix":"Gene","uri":"https://www.ncbi.nlm.nih.gov/gene/"},{"prefix":"CVCL","uri":"https://web.expasy.org/cellosaurus/CVCL_"}],"text":"In the present study, mean age at onset in patients with GBS largely overlapped that of classic COVID-19 subjects [70, 71]. However, pediatric cases with GBS have been increasingly reported in the literature [21, 27, 35, 41], suggesting that, with the spreading of the pandemic, a broader age range might be affected. Moreover, we found a higher prevalence of GBS in males compared to females, as previously reported for Zika virus–GBS [72]. This finding may also reflect the gender epidemiology of SARS-CoV-2. In this regard, males typically show a worse COVID-19 outcome compared to the females [70, 71], possibly due to a generally shorter life expectancy or to higher circulating Angiotensin-Converting-Enzyme 2 (ACE2) levels, the cellular receptor for SARS-CoV-2, in the former compared to the latter [71]. Moreover, given that GBS is a rare disease [57] the epidemiological distribution of the reported cases seems to reflect current worldwide outbreaks, with Europe being the “hottest” spot in March–May 2020 and USA together with Asia in the following period [73, 74]. On another issue, despite a few GBS cases seemed to have a para-infectious profile [10, 37, 38, 40, 55, 56] as described for Zika virus [75], all other reported patients developed neurological symptoms with a typical latency after COVID-19 (median time 14 days). This feature, together with the frequently reported negative nasopharyngeal swab at GBS onset [22, 24, 36, 44, 45, 52] and clinical improvement after IVIG therapy, seems to support the notion of a prominent post-infectious immune-mediated mechanism. However, in this context, the massive release of cytokines in COVID-19 may also contribute to the amplification of the dysimmune process underlying GBS [76, 77]. In this regard, the increase of blood inflammatory markers (e.g., CRP, IL-6, TNF-α, IL-1, etc.) in GBS tested cases may reinforce the hypothesis of a systemic inflammatory storm in COVID-19 [76, 77]. However, given the limited data, we could not perform an accurate analysis of the distribution and, eventually, prognostic value of inflammatory markers in COVID-19-associated GBS. Moreover, we cannot exclude that in cases with GBS developing before or together with COVID-19 symptoms, the disease might have progressed sub-clinically in the early phase to manifest afterwards with its typical systemic clinical picture. Indeed, two cases [10, 12], who tested positive for SARS-CoV-2, never developed COVID-19 respiratory or systemic symptoms and one of them showed an asymptomatic pneumonia at chest-CT [12]. However, only more extensive epidemiological and translational studies, with the aim to compare the characteristics of GBS associated or not with COVID-19, could clarify these issues."}

    LitCovid-sentences

    {"project":"LitCovid-sentences","denotations":[{"id":"T447","span":{"begin":0,"end":123},"obj":"Sentence"},{"id":"T448","span":{"begin":124,"end":317},"obj":"Sentence"},{"id":"T449","span":{"begin":318,"end":441},"obj":"Sentence"},{"id":"T450","span":{"begin":442,"end":510},"obj":"Sentence"},{"id":"T451","span":{"begin":511,"end":811},"obj":"Sentence"},{"id":"T452","span":{"begin":812,"end":1076},"obj":"Sentence"},{"id":"T453","span":{"begin":1077,"end":1339},"obj":"Sentence"},{"id":"T454","span":{"begin":1340,"end":1589},"obj":"Sentence"},{"id":"T455","span":{"begin":1590,"end":1751},"obj":"Sentence"},{"id":"T456","span":{"begin":1752,"end":1951},"obj":"Sentence"},{"id":"T457","span":{"begin":1952,"end":2132},"obj":"Sentence"},{"id":"T458","span":{"begin":2133,"end":2372},"obj":"Sentence"},{"id":"T459","span":{"begin":2373,"end":2561},"obj":"Sentence"},{"id":"T460","span":{"begin":2562,"end":2745},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"In the present study, mean age at onset in patients with GBS largely overlapped that of classic COVID-19 subjects [70, 71]. However, pediatric cases with GBS have been increasingly reported in the literature [21, 27, 35, 41], suggesting that, with the spreading of the pandemic, a broader age range might be affected. Moreover, we found a higher prevalence of GBS in males compared to females, as previously reported for Zika virus–GBS [72]. This finding may also reflect the gender epidemiology of SARS-CoV-2. In this regard, males typically show a worse COVID-19 outcome compared to the females [70, 71], possibly due to a generally shorter life expectancy or to higher circulating Angiotensin-Converting-Enzyme 2 (ACE2) levels, the cellular receptor for SARS-CoV-2, in the former compared to the latter [71]. Moreover, given that GBS is a rare disease [57] the epidemiological distribution of the reported cases seems to reflect current worldwide outbreaks, with Europe being the “hottest” spot in March–May 2020 and USA together with Asia in the following period [73, 74]. On another issue, despite a few GBS cases seemed to have a para-infectious profile [10, 37, 38, 40, 55, 56] as described for Zika virus [75], all other reported patients developed neurological symptoms with a typical latency after COVID-19 (median time 14 days). This feature, together with the frequently reported negative nasopharyngeal swab at GBS onset [22, 24, 36, 44, 45, 52] and clinical improvement after IVIG therapy, seems to support the notion of a prominent post-infectious immune-mediated mechanism. However, in this context, the massive release of cytokines in COVID-19 may also contribute to the amplification of the dysimmune process underlying GBS [76, 77]. In this regard, the increase of blood inflammatory markers (e.g., CRP, IL-6, TNF-α, IL-1, etc.) in GBS tested cases may reinforce the hypothesis of a systemic inflammatory storm in COVID-19 [76, 77]. However, given the limited data, we could not perform an accurate analysis of the distribution and, eventually, prognostic value of inflammatory markers in COVID-19-associated GBS. Moreover, we cannot exclude that in cases with GBS developing before or together with COVID-19 symptoms, the disease might have progressed sub-clinically in the early phase to manifest afterwards with its typical systemic clinical picture. Indeed, two cases [10, 12], who tested positive for SARS-CoV-2, never developed COVID-19 respiratory or systemic symptoms and one of them showed an asymptomatic pneumonia at chest-CT [12]. However, only more extensive epidemiological and translational studies, with the aim to compare the characteristics of GBS associated or not with COVID-19, could clarify these issues."}

    LitCovid-PD-HP

    {"project":"LitCovid-PD-HP","denotations":[{"id":"T791","span":{"begin":2534,"end":2543},"obj":"Phenotype"}],"attributes":[{"id":"A791","pred":"hp_id","subj":"T791","obj":"http://purl.obolibrary.org/obo/HP_0002090"}],"text":"In the present study, mean age at onset in patients with GBS largely overlapped that of classic COVID-19 subjects [70, 71]. However, pediatric cases with GBS have been increasingly reported in the literature [21, 27, 35, 41], suggesting that, with the spreading of the pandemic, a broader age range might be affected. Moreover, we found a higher prevalence of GBS in males compared to females, as previously reported for Zika virus–GBS [72]. This finding may also reflect the gender epidemiology of SARS-CoV-2. In this regard, males typically show a worse COVID-19 outcome compared to the females [70, 71], possibly due to a generally shorter life expectancy or to higher circulating Angiotensin-Converting-Enzyme 2 (ACE2) levels, the cellular receptor for SARS-CoV-2, in the former compared to the latter [71]. Moreover, given that GBS is a rare disease [57] the epidemiological distribution of the reported cases seems to reflect current worldwide outbreaks, with Europe being the “hottest” spot in March–May 2020 and USA together with Asia in the following period [73, 74]. On another issue, despite a few GBS cases seemed to have a para-infectious profile [10, 37, 38, 40, 55, 56] as described for Zika virus [75], all other reported patients developed neurological symptoms with a typical latency after COVID-19 (median time 14 days). This feature, together with the frequently reported negative nasopharyngeal swab at GBS onset [22, 24, 36, 44, 45, 52] and clinical improvement after IVIG therapy, seems to support the notion of a prominent post-infectious immune-mediated mechanism. However, in this context, the massive release of cytokines in COVID-19 may also contribute to the amplification of the dysimmune process underlying GBS [76, 77]. In this regard, the increase of blood inflammatory markers (e.g., CRP, IL-6, TNF-α, IL-1, etc.) in GBS tested cases may reinforce the hypothesis of a systemic inflammatory storm in COVID-19 [76, 77]. However, given the limited data, we could not perform an accurate analysis of the distribution and, eventually, prognostic value of inflammatory markers in COVID-19-associated GBS. Moreover, we cannot exclude that in cases with GBS developing before or together with COVID-19 symptoms, the disease might have progressed sub-clinically in the early phase to manifest afterwards with its typical systemic clinical picture. Indeed, two cases [10, 12], who tested positive for SARS-CoV-2, never developed COVID-19 respiratory or systemic symptoms and one of them showed an asymptomatic pneumonia at chest-CT [12]. However, only more extensive epidemiological and translational studies, with the aim to compare the characteristics of GBS associated or not with COVID-19, could clarify these issues."}

    LitCovid-PMC-OGER-BB

    {"project":"LitCovid-PMC-OGER-BB","denotations":[{"id":"T1133","span":{"begin":96,"end":104},"obj":"SP_7"},{"id":"T1134","span":{"begin":421,"end":425},"obj":"NCBITaxon:7955"},{"id":"T1135","span":{"begin":426,"end":431},"obj":"NCBITaxon:10376"},{"id":"T1136","span":{"begin":499,"end":509},"obj":"SP_7"},{"id":"T1137","span":{"begin":556,"end":564},"obj":"SP_7"},{"id":"T1138","span":{"begin":643,"end":647},"obj":"UBERON:0000104"},{"id":"T1139","span":{"begin":684,"end":715},"obj":"PG_10;PR:000003622"},{"id":"T1140","span":{"begin":717,"end":721},"obj":"G_3;PG_10;PR:000003622"},{"id":"T1141","span":{"begin":757,"end":761},"obj":"PR:000014459;SP_7"},{"id":"T1142","span":{"begin":761,"end":767},"obj":"SP_7"},{"id":"T1143","span":{"begin":1202,"end":1206},"obj":"NCBITaxon:7955"},{"id":"T1144","span":{"begin":1207,"end":1212},"obj":"NCBITaxon:10239"},{"id":"T1145","span":{"begin":1257,"end":1269},"obj":"UBERON:0001016"},{"id":"T1146","span":{"begin":1308,"end":1316},"obj":"SP_7"},{"id":"T1147","span":{"begin":1401,"end":1415},"obj":"UBERON:0001728"},{"id":"T1148","span":{"begin":1490,"end":1494},"obj":"CHEBI:42098;CHEBI:42098"},{"id":"T1149","span":{"begin":1563,"end":1569},"obj":"UBERON:0002405"},{"id":"T1150","span":{"begin":1652,"end":1660},"obj":"SP_7"},{"id":"T1151","span":{"begin":1784,"end":1789},"obj":"UBERON:0000178"},{"id":"T1152","span":{"begin":1823,"end":1827},"obj":"PR:000001393"},{"id":"T1153","span":{"begin":1829,"end":1834},"obj":"PR:000000134"},{"id":"T1154","span":{"begin":1933,"end":1941},"obj":"SP_7"},{"id":"T1155","span":{"begin":2108,"end":2116},"obj":"SP_7"},{"id":"T1156","span":{"begin":2219,"end":2227},"obj":"SP_7"},{"id":"T1157","span":{"begin":2425,"end":2435},"obj":"SP_7"},{"id":"T1158","span":{"begin":2453,"end":2461},"obj":"SP_7"},{"id":"T1159","span":{"begin":2462,"end":2473},"obj":"UBERON:0001004"},{"id":"T1160","span":{"begin":2547,"end":2552},"obj":"UBERON:0001443"},{"id":"T1161","span":{"begin":2611,"end":2624},"obj":"GO:0006412"},{"id":"T1162","span":{"begin":2708,"end":2716},"obj":"SP_7"},{"id":"T68512","span":{"begin":2547,"end":2552},"obj":"UBERON:0001443"},{"id":"T83211","span":{"begin":2611,"end":2624},"obj":"GO:0006412"},{"id":"T62702","span":{"begin":2708,"end":2716},"obj":"SP_7"}],"text":"In the present study, mean age at onset in patients with GBS largely overlapped that of classic COVID-19 subjects [70, 71]. However, pediatric cases with GBS have been increasingly reported in the literature [21, 27, 35, 41], suggesting that, with the spreading of the pandemic, a broader age range might be affected. Moreover, we found a higher prevalence of GBS in males compared to females, as previously reported for Zika virus–GBS [72]. This finding may also reflect the gender epidemiology of SARS-CoV-2. In this regard, males typically show a worse COVID-19 outcome compared to the females [70, 71], possibly due to a generally shorter life expectancy or to higher circulating Angiotensin-Converting-Enzyme 2 (ACE2) levels, the cellular receptor for SARS-CoV-2, in the former compared to the latter [71]. Moreover, given that GBS is a rare disease [57] the epidemiological distribution of the reported cases seems to reflect current worldwide outbreaks, with Europe being the “hottest” spot in March–May 2020 and USA together with Asia in the following period [73, 74]. On another issue, despite a few GBS cases seemed to have a para-infectious profile [10, 37, 38, 40, 55, 56] as described for Zika virus [75], all other reported patients developed neurological symptoms with a typical latency after COVID-19 (median time 14 days). This feature, together with the frequently reported negative nasopharyngeal swab at GBS onset [22, 24, 36, 44, 45, 52] and clinical improvement after IVIG therapy, seems to support the notion of a prominent post-infectious immune-mediated mechanism. However, in this context, the massive release of cytokines in COVID-19 may also contribute to the amplification of the dysimmune process underlying GBS [76, 77]. In this regard, the increase of blood inflammatory markers (e.g., CRP, IL-6, TNF-α, IL-1, etc.) in GBS tested cases may reinforce the hypothesis of a systemic inflammatory storm in COVID-19 [76, 77]. However, given the limited data, we could not perform an accurate analysis of the distribution and, eventually, prognostic value of inflammatory markers in COVID-19-associated GBS. Moreover, we cannot exclude that in cases with GBS developing before or together with COVID-19 symptoms, the disease might have progressed sub-clinically in the early phase to manifest afterwards with its typical systemic clinical picture. Indeed, two cases [10, 12], who tested positive for SARS-CoV-2, never developed COVID-19 respiratory or systemic symptoms and one of them showed an asymptomatic pneumonia at chest-CT [12]. However, only more extensive epidemiological and translational studies, with the aim to compare the characteristics of GBS associated or not with COVID-19, could clarify these issues."}

    2_test

    {"project":"2_test","denotations":[{"id":"32840686-32109013-63205816","span":{"begin":114,"end":116},"obj":"32109013"},{"id":"32840686-32411652-63205817","span":{"begin":118,"end":120},"obj":"32411652"},{"id":"32840686-32653906-63205818","span":{"begin":208,"end":210},"obj":"32653906"},{"id":"32840686-32652520-63205819","span":{"begin":212,"end":214},"obj":"32652520"},{"id":"32840686-32618839-63205820","span":{"begin":220,"end":222},"obj":"32618839"},{"id":"32840686-29799940-63205821","span":{"begin":436,"end":438},"obj":"29799940"},{"id":"32840686-32109013-63205822","span":{"begin":597,"end":599},"obj":"32109013"},{"id":"32840686-32411652-63205823","span":{"begin":601,"end":603},"obj":"32411652"},{"id":"32840686-32411652-63205824","span":{"begin":806,"end":808},"obj":"32411652"},{"id":"32840686-31541214-63205825","span":{"begin":855,"end":857},"obj":"31541214"},{"id":"32840686-32588185-63205826","span":{"begin":1160,"end":1162},"obj":"32588185"},{"id":"32840686-32696488-63205827","span":{"begin":1164,"end":1166},"obj":"32696488"},{"id":"32840686-32399950-63205828","span":{"begin":1168,"end":1170},"obj":"32399950"},{"id":"32840686-32540883-63205829","span":{"begin":1176,"end":1178},"obj":"32540883"},{"id":"32840686-32246917-63205830","span":{"begin":1180,"end":1182},"obj":"32246917"},{"id":"32840686-27705091-63205831","span":{"begin":1213,"end":1215},"obj":"27705091"},{"id":"32840686-32749602-63205832","span":{"begin":1434,"end":1436},"obj":"32749602"},{"id":"32840686-32558002-63205833","span":{"begin":1438,"end":1440},"obj":"32558002"},{"id":"32840686-32753154-63205834","span":{"begin":1442,"end":1444},"obj":"32753154"},{"id":"32840686-32503084-63205835","span":{"begin":1446,"end":1448},"obj":"32503084"},{"id":"32840686-32638112-63205836","span":{"begin":1450,"end":1452},"obj":"32638112"},{"id":"32840686-32302082-63205837","span":{"begin":1454,"end":1456},"obj":"32302082"},{"id":"32840686-32529462-63205838","span":{"begin":1742,"end":1744},"obj":"32529462"},{"id":"32840686-32513566-63205839","span":{"begin":1746,"end":1748},"obj":"32513566"},{"id":"32840686-32529462-63205840","span":{"begin":1942,"end":1944},"obj":"32529462"},{"id":"32840686-32513566-63205841","span":{"begin":1946,"end":1948},"obj":"32513566"},{"id":"32840686-32588185-63205842","span":{"begin":2391,"end":2393},"obj":"32588185"},{"id":"32840686-32814611-63205843","span":{"begin":2395,"end":2397},"obj":"32814611"},{"id":"32840686-32814611-63205844","span":{"begin":2556,"end":2558},"obj":"32814611"}],"text":"In the present study, mean age at onset in patients with GBS largely overlapped that of classic COVID-19 subjects [70, 71]. However, pediatric cases with GBS have been increasingly reported in the literature [21, 27, 35, 41], suggesting that, with the spreading of the pandemic, a broader age range might be affected. Moreover, we found a higher prevalence of GBS in males compared to females, as previously reported for Zika virus–GBS [72]. This finding may also reflect the gender epidemiology of SARS-CoV-2. In this regard, males typically show a worse COVID-19 outcome compared to the females [70, 71], possibly due to a generally shorter life expectancy or to higher circulating Angiotensin-Converting-Enzyme 2 (ACE2) levels, the cellular receptor for SARS-CoV-2, in the former compared to the latter [71]. Moreover, given that GBS is a rare disease [57] the epidemiological distribution of the reported cases seems to reflect current worldwide outbreaks, with Europe being the “hottest” spot in March–May 2020 and USA together with Asia in the following period [73, 74]. On another issue, despite a few GBS cases seemed to have a para-infectious profile [10, 37, 38, 40, 55, 56] as described for Zika virus [75], all other reported patients developed neurological symptoms with a typical latency after COVID-19 (median time 14 days). This feature, together with the frequently reported negative nasopharyngeal swab at GBS onset [22, 24, 36, 44, 45, 52] and clinical improvement after IVIG therapy, seems to support the notion of a prominent post-infectious immune-mediated mechanism. However, in this context, the massive release of cytokines in COVID-19 may also contribute to the amplification of the dysimmune process underlying GBS [76, 77]. In this regard, the increase of blood inflammatory markers (e.g., CRP, IL-6, TNF-α, IL-1, etc.) in GBS tested cases may reinforce the hypothesis of a systemic inflammatory storm in COVID-19 [76, 77]. However, given the limited data, we could not perform an accurate analysis of the distribution and, eventually, prognostic value of inflammatory markers in COVID-19-associated GBS. Moreover, we cannot exclude that in cases with GBS developing before or together with COVID-19 symptoms, the disease might have progressed sub-clinically in the early phase to manifest afterwards with its typical systemic clinical picture. Indeed, two cases [10, 12], who tested positive for SARS-CoV-2, never developed COVID-19 respiratory or systemic symptoms and one of them showed an asymptomatic pneumonia at chest-CT [12]. However, only more extensive epidemiological and translational studies, with the aim to compare the characteristics of GBS associated or not with COVID-19, could clarify these issues."}