Browsing by Author "Robertson, K."

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Hiv-1 central nervous system compartmentalization and cytokine interplay in non-subtype B Hiv-1 infections in Nigeria and Malawi
(Mary Ann Liebert, Inc., 2020) Adewumi, O. M.; Dukhovlinova, E.; Shehu, N. Y; Zhou, S.; Council, O. D.; Akanbi, M. O.; Taiwo, B.; Ogunniyi, A.; Robertson, K.; Kanyama, C.; Hosseinipour, M. C.; Swanstrom, R.
"HIV-1 compartmentalization in the central nervous system (CNS) and its contribution to neurological disease have been well documented. Previous studies were conducted among people infected with subtypes B or C where CNS compartmentalization has been observed when comparing viral sequences in the blood to virus in cerebrospinal fluid (CSF). However, little is known about CNS compartmentalization in other HIV-1 subtypes. Using a deep sequencing approach with Primer ID, we conducted a cross-sectional study among Nigerian and Malawian HIV-1 cohorts with or without fungal Cryptococcus infection diagnosed as cryptococcal meningitis (CM) to determine the extent of CSF/CNS compartmentalization with CM. Paired plasma and CSF samples from 45 participants were also analyzed for cytokine/chemokine levels. Viral populations comparing virus in the blood and the CSF ranged from compartmentalized to equilibrated, including minor or partial compartmentalization or clonal amplification of a single viral sequence. The frequency of compartmentalized viral populations in the blood and CSF was similar between the CM- and CM+ participants. We confirmed the potential to see compartmentalization with subtype C infection and have also documented CNS compartmentalization of an HIV-1 subtype G infection. Cytokine profiles indicated a proinflammatory environment, especially within the CSF/CNS. However, sCD163 was suppressed in the CSF in the presence of CM, perhaps due to elevated levels of IL-4, which were also a feature of the cytokine profile, showing a distinct cytokine profile with CM.
Human Immunodeficiency Virus Type 1 and tuberculosis co-infection in multinational resource limited settings: increased neurological dysfunction
(Oxford Academic, 2019) Robertson, K.; Oladeji, B.; Jiang, H.; Kumwenda, J.; Supparatpinyo, K.; Campbell, T.; Hakim, J.; Tripathy, S.; Hosseinipour, M.; Marra, C. M.; Kumarasamy, N.; Evans, S.; Vecchio, A.; La Rosa, A.; Santos, B.; Silva, M. T.; Montano, S.; Kanyama, C.; Firnhaber, C.; Price, R.; Marcus, C.; Berzins, B.; Masih, R.; Lalloo, U.; Sanne, I.; Yosief, S.; Walawander, A.; Nair, A.; Sacktor, N.; Hall, C.; AIDS Clinical Trials Group
Background. AIDS Clinical Trial Group 5199 compared neurological and neuropsychological test performance of human immunodeficiency virus type 1 (HIV-1)–infected participants in resource-limited settings treated with 3 World Health Organization–recommended antiretroviral (ART) regimens. We investigated the impact of tuberculosis (TB) on neurological and neuropsychological outcomes. Methods. Standardized neurological and neuropsychological examinations were administered every 24 weeks. Generalized estimating equation models assessed the association between TB and neurological/neuropsychological performance. Results. Characteristics of the 860 participants at baseline were as follows: 53% female, 49% African; median age, 34 years; CD4 count, 173 cells/μL; and plasma HIV-1 RNA, 5.0 log copies/mL. At baseline, there were 36 cases of pulmonary, 9 cases of extrapulmonary, and 1 case of central nervous system (CNS) TB. Over the 192 weeks of follow-up, there were 55 observations of pulmonary TB in 52 persons, 26 observations of extrapulmonary TB in 25 persons, and 3 observations of CNS TB in 2 persons. Prevalence of TB decreased with ART initiation and follow-up. Those with TB coinfection had significantly poorer performance on grooved pegboard (P < .001) and finger tapping nondominant hand (P < .01). TB was associated with diffuse CNS disease (P < .05). Furthermore, those with TB had 9.27 times (P < .001) higher odds of reporting decreased quality of life, and had 8.02 times (P = .0005) higher odds of loss of productivity. Conclusions. TB coinfection was associated with poorer neuropsychological functioning, particularly the fine motor skills, and had a substantial impact on functional ability and quality of life.
Suicidal behavior and associations with quality of life among HIV/AIDS patients in Ibadan, Nigeria
(SAGE, 2015) Oladeji, B. D.; Taiwo, B.; Mosuro, O.; Fayemiwo, S. A.; Abiona, T.; Fought, A. J.; Robertson, K.; Ogunniyi, A.; Adewole, I. F.
Background: Suicidality has rarely been studied in HIV-infected patients in sub-Saharan Africa. This study explored suicidal behavior in a clinic sample of people living with HIV, in Nigeria. Methods: Consecutive patients were interviewed using the Composite International Diagnostic Interview (CIDI-10.0) and the World Health Organization Quality of Life (WHO-QOLHIV-BREF). Associations of suicidal behavior were explored using logistic regression models. Results: In this sample of 828 patients (71% female, mean age 41.3 + 10 years), prevalence of suicidal behaviors were 15.1%, 5.8%, and 3.9% for suicidal ideation, plans, and attempts, respectively. Women were more likely than men to report suicidal ideation (odds ratio 1.7; 95% confidence interval 1.05-2.64). Depression and/or anxiety disorder was associated with increased odds of all suicidal behaviors. Suicidal behavior was associated with significantly lower overall and domain scores on the WHO-QOL. Conclusion: Suicidal behaviors were common and significantly associated with the presence of mental disorders and lower quality of life.