Id |
Subject |
Object |
Predicate |
Lexical cue |
T1003 |
0-14 |
Sentence |
denotes |
HIV-1 Genetics |
T1004 |
15-204 |
Sentence |
denotes |
Genetic differences among HIV-1 variants have a significant impact on HIV transmission, disease progression, as well as the response to ARV therapy (see reviews, Geretti 2006; Taylor et al. |
T1005 |
205-222 |
Sentence |
denotes |
2008; Tyor et al. |
T1006 |
223-245 |
Sentence |
denotes |
2013; Tables 1 and 2). |
T1007 |
246-351 |
Sentence |
denotes |
Pre-cART studies provide substantial evidence that HIV clade differences can influence HAND (Gupta et al. |
T1008 |
352-372 |
Sentence |
denotes |
2007; Sacktor et al. |
T1009 |
373-392 |
Sentence |
denotes |
2009; Boivin et al. |
T1010 |
393-414 |
Sentence |
denotes |
2010; McArthur et al. |
T1011 |
415-431 |
Sentence |
denotes |
2010; Rao et al. |
T1012 |
432-538 |
Sentence |
denotes |
2013), with HAND severity being highest for clade D and B strains, followed by C and A clades (Tyor et al. |
T1013 |
539-545 |
Sentence |
denotes |
2013). |
T1014 |
546-734 |
Sentence |
denotes |
These findings are supported by preclinical studies in which clade B or clade C HIV-infected macrophages were intracranially injected into severe combined immunodeficient mice (SCID) mice. |
T1015 |
735-864 |
Sentence |
denotes |
Exposure to clade B isolates induced more severe memory deficits, as well as greater astrogliosis and neuronal damage (Rao et al. |
T1016 |
865-877 |
Sentence |
denotes |
2008, 2013). |
T1017 |
878-1034 |
Sentence |
denotes |
In another example, the Tat dicysteine motif (CC) at positions 30 and 31, which is commonly found in clade B isolates, appears to worsen HAND (Mishra et al. |
T1018 |
1035-1051 |
Sentence |
denotes |
2008; Rao et al. |
T1019 |
1052-1113 |
Sentence |
denotes |
2013) and has been studied extensively in vitro (Ranga et al. |
T1020 |
1114-1130 |
Sentence |
denotes |
2004; Rao et al. |
T1021 |
1131-1147 |
Sentence |
denotes |
2008; Zou et al. |
T1022 |
1148-1184 |
Sentence |
denotes |
2011; Krishnan and Chatterjee 2015). |
T1023 |
1185-1284 |
Sentence |
denotes |
Clade B Tat is more intrinsically cytotoxic to primary neurons in vitro than clade C Tat (Li et al. |
T1024 |
1285-1306 |
Sentence |
denotes |
2008; Campbell et al. |
T1025 |
1307-1323 |
Sentence |
denotes |
2011; Zou et al. |
T1026 |
1324-1427 |
Sentence |
denotes |
2011), resulting in increased proinflammatory cytokine production (e.g., IL-6 and TNF-α) (Gandhi et al. |
T1027 |
1428-1497 |
Sentence |
denotes |
2009) and monocyte recruitment/migration into the brain (Ranga et al. |
T1028 |
1498-1514 |
Sentence |
denotes |
2004; Rao et al. |
T1029 |
1515-1572 |
Sentence |
denotes |
2008), and increased disruption of the BBB (Gandhi et al. |
T1030 |
1573-1579 |
Sentence |
denotes |
2010). |
T1031 |
1580-1779 |
Sentence |
denotes |
Similarly, the production of the inflammatory mediators prostaglandin E2 and the thromboxane A2 receptor by astrocytes is more significantly increased by clade B than clade C gp120 (Samikkannu et al. |
T1032 |
1780-1786 |
Sentence |
denotes |
2011). |
T1033 |
1787-1896 |
Sentence |
denotes |
Sequence and structural alterations in gp120 have been demonstrated between clades B and C (Gnanakaran et al. |
T1034 |
1897-1960 |
Sentence |
denotes |
2007) and potentially contribute to these observed differences. |
T1035 |
1961-2173 |
Sentence |
denotes |
When considering effects of HIV clade variants in the presence of opioids, the overall toxicity in MSNs seen with clade C Tat (30% neuronal losses) was considerably less than with clade B (70% losses) (Zou et al. |
T1036 |
2174-2180 |
Sentence |
denotes |
2011). |
T1037 |
2181-2461 |
Sentence |
denotes |
Although clade B HIV predominates in Western countries, future clinical longitudinal studies are necessary that employ HIV clade testing in HIV-1 infected opioid users to confirm the hypothesis that opioid interactive effects on HAND pathogenesis depend on the HIV clade assessed. |
T1038 |
2462-2552 |
Sentence |
denotes |
Besides HIV genetic diversity, differences in HIV tropism add another level of complexity. |
T1039 |
2553-2688 |
Sentence |
denotes |
Morphine interactions can differ significantly between X4 and R5-tropic gp120 variants depending on the outcome measure (El-Hage et al. |
T1040 |
2689-2712 |
Sentence |
denotes |
2011b; Podhaizer et al. |
T1041 |
2713-2734 |
Sentence |
denotes |
2012; Balinang et al. |
T1042 |
2735-2751 |
Sentence |
denotes |
2017; Kim et al. |
T1043 |
2752-2758 |
Sentence |
denotes |
2018). |
T1044 |
2759-3012 |
Sentence |
denotes |
Increased infectivity in the presence of morphine was noted for the R5-tropic HIV-1SF162 strain in a human hepatoma Huh7.5.1 cell line model, whereas the infectivity rate with the X4-tropic HIV-1LAI/IIIB strain was unaffected by morphine (El-Hage et al. |
T1045 |
3013-3020 |
Sentence |
denotes |
2011b). |
T1046 |
3021-3173 |
Sentence |
denotes |
To date, no clinical studies have assessed whether opioid interactions with R5- or R4-preferring HIV strains differentially impact the severity of HAND. |
T1047 |
3174-3379 |
Sentence |
denotes |
However, the findings from preclinical studies indicate that HIV-1 strain-specific differences are critical determinants in shaping both the timing and pattern of neurotoxic interactions with opioid drugs. |