scholarly journals Prevalence of Peripheral Vestibular Impairment in Adults with Human Immunodeficiency Virus

2021 ◽  
Vol 25 (1) ◽  
pp. 36-42
Author(s):  
Alison Millar ◽  
Karin Joubert ◽  
Alida Naude
Keyword(s):  
Human Immunodeficiency Virus ◽  
Vestibular Function ◽  
Head Impulse Test ◽  
Hiv Positive ◽  
Positive Group ◽  
Head Impulse ◽  
Immunodeficiency Virus ◽  
Central Compensation ◽  
The Impact ◽  
Hiv Negative

Background and Objectives: Globally, the human immunodeficiency virus (HIV) is responsible for one of the most serious pandemics to date. The vulnerability of the vestibular system in individuals with HIV has been confirmed, and central vestibular impairments have been frequently reported. However, there are disagreements on the impact of HIV on peripheral vestibular function. Thus, the current study aimed to determine the prevalence of peripheral vestibular impairment, specifically related to the semi-circular canals (SCCs), in HIV-positive individuals receiving antiretroviral (ARV) treatment.Subjects and Methods: A total of 92 adults between the ages of 18 and 50 years (divided into two groups) participated in the study. The first group comprised HIV-positive individuals receiving ARV treatment (n1=60), and the second group comprised HIV-negative participants (n2=32). The video head impulse test was used to conduct the head impulse paradigm (HIMP).Results: Bilateral normal HIMP results were obtained in 95% of the HIV-positive participants and all HIV-negative participants. The gain of the left posterior SCCs was significantly lower in the HIV-positive group, while the gains of all other canals between the two groups were comparable.Conclusions: The prevalence of peripheral vestibular impairment in the HIV-positive group was not significantly different from that of the HIV-negative group. The reduced prevalence in the current study may be attributed to participant characteristics, the test battery employed, and the central compensation of the vestibular dysfunctions at the later stages of infection.

Role of Cerebrospinal Fluid Shunting for Human Immunodeficiency Virus-positive Patients with Tuberculous Meningitis and Hydrocephalus

Neurosurgery ◽  
2000 ◽  
Vol 47 (3) ◽  
pp. 644-650
Author(s):  
Syed Sameer Nadvi ◽  
Narendra Nathoo ◽  
Ken Annamalai ◽  
James R. van Dellen ◽  
Ahmed I. Bhigjee
Keyword(s):  
Human Immunodeficiency Virus ◽  
Cerebrospinal Fluid ◽  
Tuberculous Meningitis ◽  
Hiv Positive ◽  
Negative Group ◽  
Cd4 Counts ◽  
Positive Group ◽  
Immunodeficiency Virus ◽  
Cerebrospinal Fluid Shunting ◽  
Hiv Negative

ABSTRACT OBJECTIVE Tuberculous meningitis (TBM) and its complications continue to have devastating neurological consequences for patients. Budgetary constraints, especially in developing countries, have made it necessary to select patients for shunting who are likely to experience good recoveries. To date, the value of cerebrospinal fluid shunting for human immunodeficiency virus (HIV)-positive patients with TBM has not been clearly established. METHODS Thirty patients with TBM and hydrocephalus were prospectively evaluated. Coincidentally, one-half of the patients were HIV-positive. All patients underwent uniform treatment, including ventriculoperitoneal shunt placement and antituberculosis treatment. CD4 counts were measured for all patients. Outcomes were assessed at 1 month. RESULTS No complications related to shunt insertion were noted. The HIV-positive group fared poorly (death, 66.7%; poor outcome, 64.7%), compared with the HIV-negative group (death, 26.7%; poor outcome, 30.8%). Despite cerebrospinal fluid shunting, no patient in the HIV-positive group experienced a good recovery (Glasgow Outcome Scale score of 5). This is in contrast to the six patients (40%) in the HIV-negative group who, with the same treatment, experienced good recoveries (Glasgow Outcome Scale scores of 5) at discharge (P < 0.14). No patient (either HIV-positive or HIV-negative) who presented in TBM Grade 4 survived, whereas no HIV-positive patient who presented in TBM Grade 3 survived. A significant relationship was noted between CD4 counts and patient outcomes (P < 0.031). CONCLUSION In the absence of obvious clinical benefit, HIV-positive patients with TBM should undergo a trial of ventricular or lumbar cerebrospinal fluid drainage, and only those who exhibit significant neurological improvement should proceed to shunt surgery.

scholarly journals Frailty Is Associated With Mortality and Incident Comorbidity Among Middle-Aged Human Immunodeficiency Virus (HIV)–Positive and HIV-Negative Participants

2020 ◽  
Vol 222 (6) ◽  
pp. 919-928 ◽  
Author(s):  
Eveline Verheij ◽  
Gregory D Kirk ◽  
Ferdinand W Wit ◽  
Rosan A van Zoest ◽  
Sebastiaan O Verboeket ◽  
...  
Keyword(s):  
Risk Factors ◽  
Human Immunodeficiency Virus ◽  
Strong Predictor ◽  
Hiv Positive ◽  
Geriatric Population ◽  
Mortality And Morbidity ◽  
Immunodeficiency Virus ◽  
The Impact ◽  
Hiv Negative

Abstract Background Frailty is associated with mortality and morbidity in the general geriatric population, but less is known about its impact among the aging but generally younger population with human immunodeficiency virus (HIV). Methods The impact of frailty on all-cause mortality during 6 years of follow-up and incident comorbidity during 4 years of follow-up was assessed among 598 HIV-positive and 550 comparable HIV-negative participants aged ≥ 45 years of the AGEhIV Cohort Study. Frailty encompasses 5 domains; weight loss, low physical activity, exhaustion, decreased grip strength, and slow gait speed. Presence of ≥ 3 denotes frailty, 1–2 prefrailty, and 0 robust. Multivariable Cox and logistic regression models were used to assess the independent relationships of frailty with both outcomes, adjusting for HIV infection and traditional risk factors. Results At baseline, 7.5% (n = 86) of participants were frail. During follow-up, 38 participants died. Mortality rate was significantly higher among frail participants: 25.7/1000 person-years of follow-up (PYFU) (95% confidence interval [CI], 14.2–46.4) compared with prefrail (7.2/1000 PYFU [95% CI, 4.7–11.2]) and robust (2.3/1000 PYFU [95% CI, 1.1–4.9]). In fully adjusted analyses, frailty remained strongly associated with death (hazard ratio, 4.6 [95% CI, 1.7–12.5]) and incident comorbidity (odds ratio, 1.9 [95% CI, 1.1–3.1]). No interactions were observed between frailty and HIV status in all analyses. Conclusions Frailty is a strong predictor of both mortality and incident comorbidity independent from other risk factors. Clinical Trials Registration NCT01466582.

scholarly journals Increasing genetic diversity of hepatitis C virus in haemophiliacs with human immunodeficiency virus coinfection

2007 ◽  
Vol 88 (9) ◽  
pp. 2513-2519 ◽  
Author(s):  
Yasuhito Tanaka ◽  
Kousuke Hanada ◽  
Hideji Hanabusa ◽  
Fuat Kurbanov ◽  
Takashi Gojobori ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Human Immunodeficiency Virus ◽  
Hepatitis C ◽  
Selective Pressure ◽  
Hiv Positive ◽  
Negative Group ◽  
Positive Group ◽  
Time Points ◽  
Immunodeficiency Virus ◽  
Hiv Negative

Patients with inherited bleeding disorders who received clotting factor concentrates before 1987 have high rates of hepatitis C virus (HCV) or HCV/human immunodeficiency virus (HIV) infection. To determine whether the persistent nature of HIV affects the genetic diversity of HCV by less selective pressure through the immunosuppression of HIV/HCV-coinfected patients, both the change of genetic diversity and selective pressure were examined in the HCV envelope genes (E1 and E2) of 325 genotype 1a subclones from eight HIV-positive and five HIV-negative patients with two time points (more than 6 years apart). To infer the genetic diversity of HCV in each patient, we used two approaches. One method was to estimate the difference of total evolutionary distances in the phylogenetic tree between the two time points, and another was to estimate the changes of genetic diversity along the time based on the coalescence theory. The two results indicate that the HIV-positive group has significantly more diverse population structure than the HIV-negative group. A comparative analysis of the synonymous and non-synonymous substitutions found that the HIV-positive group was subject to less selective pressure than the HIV-negative group. In conclusion, HIV-positive patients would have a more diversified HCV population than HIV-negative patients due to less selective pressure from the immune system.

Abstract WP426: Subarachnoid Hemorrhage in patients infected with Human Immunodeficiency Virus

Stroke ◽  
2013 ◽  
Vol 44 (suppl_1) ◽  
Author(s):  
Haralabos Zacharatos ◽  
Malik M Adil ◽  
Ameer E Hassan ◽  
Sarwat I Gilani ◽  
Adnan I Qureshi
Keyword(s):  
Human Immunodeficiency Virus ◽  
Subarachnoid Hemorrhage ◽  
Blood Transfusion ◽  
Hospital Mortality ◽  
Hiv Infection ◽  
The United States ◽  
Hiv Positive ◽  
Published Data ◽  
Immunodeficiency Virus ◽  
Hiv Negative

Background: There is limited data regarding the unique attributes of ischemic stroke among patients infected with human immunodeficiency virus (HIV). There is no published data regarding the occurrence and outcomes of subarachnoid hemorrhage (SAH) among HIV infected persons. Methods: The largest all-payer Nationwide Inpatient Sample (NIS 2002-2010) data was used to identify and analyze all patients presenting with the primary diagnosis of SAH in the United States. Among this cohort, we identified the patients who were not HIV positive and those who were HIV positive. Patient demographics, medical co-morbidities, in-hospital complications, in-hospital procedures, and discharge disposition were compared between the two groups. The association between HIV infection and outcomes was evaluated in multivariate analysis after adjusting for potential confounders. Results: Of the 351,491 patients admitted with SAH, 1367 (0.39%) were infected with HIV. HIV infected patients were younger, mean age [±SD] of 45 ±14.2 years versus those who were not 58±19 years, (p<0.0001). The rate of blood transfusion [27,286 (7.8%) versus 245.6 (18%), p=0.0003], mechanical ventilation [51,199 (14.6%) versus 316.1(23.1%), p=0.008], and sepsis [14,644 (4.2%) versus 236.1 (17.3%), p<0.0001] was significantly higher among HIV infected patients. After adjusting for age, gender, hypertension, coagulopathy, atrial fibrillation, renal failure, and dyslipidemia, HIV negative patients had a significantly higher rate of discharge to home (odds ratio [OR] 1.9, 95% CI: 1.4-2.6, p<0.0001) and lower in-patient mortality (OR 0.4, 95% CI: 0.3-0.5, p<0.001). Further adjustment for blood transfusion and sepsis reduced the odds of discharge to home for the HIV negative patients, from 1.9 to 1.7 but did not affect in-hospital mortality. Conclusion: The in-hospital mortality in HIV infected patients with SAH is higher despite these patients being younger than non-HIV infected patients. We believe that this study provides a nationwide perspective which may have some important implications for early recognition and diagnosis of HIV-infection in SAH patients.

Antimalarial drug resistance markers in human immunodeficiency virus (HIV)-positive and HIV-negative adults with asymptomatic malaria infections in Port Harcourt, Nigeria

2021 ◽  
Author(s):  
Ifeyinwa Chijioke-Nwauche ◽  
Mary C Oguike ◽  
Chijioke A Nwauche ◽  
Khalid B Beshir ◽  
Colin J Sutherland
Keyword(s):  
Human Immunodeficiency Virus ◽  
Drug Resistance ◽  
Drug Susceptibility ◽  
Blood Film ◽  
University Hospital ◽  
Hiv Positive ◽  
Asymptomatic Malaria ◽  
Immunodeficiency Virus ◽  
Before And After ◽  
Hiv Negative

Abstract Background In Nigeria, indiscriminate use of antimalarial drugs may contribute to the threat of drug resistance, but this has not been evaluated among people living with human immunodeficiency virus (HIV). Methods HIV-positive adults attending a university hospital HIV clinic and HIV-negative adult volunteers from the university hospital community with a positive blood film were treated with artemether–lumefantrine. Parasite DNA from before and after treatment was polymerase chain reaction amplified to identify molecular markers of drug susceptibility. Results The pfcrt76T genotype was prevalent among both HIV-positive and HIV-negative participants (78.6% and 68.2%, respectively). Three new mutations in the pfmdr1 gene—F73S, S97L and G165R—and the uncommon pfdhps S436F variant were detected, whereas pfdhps K540E and pfdhfr I164L were absent. The A437G allele of pfdhps predominated (62/66 [94%]). The I431 V mutation was found in 19 of 66 pretreatment pfdhps sequences (28.8%). The pfmdr1 86N allele was significantly more common at day 3 post-treatment than at baseline (odds ratio 8.77 [95% confidence interval 1.21 to 380]). Conclusions We found evidence of continued chloroquine use among HIV-positive individuals. Selection for the pfmdr1 86N after artemether–lumefantrine treatment was observed, indicating a possible threat to antimalarial efficacy in the study area. The complexity of pfdhps haplotypes emphasises the need for careful monitoring of anti-folate susceptibility in Nigeria.

Trypanosoma cruziParasitemia in Chronic Chagas Disease: Comparison between Human Immunodeficiency Virus (HIV)–Positive and HIV‐Negative Patients

2002 ◽  
Vol 186 (6) ◽  
pp. 872-875 ◽  
Author(s):  
Ana Marli C. Sartori ◽  
José Eluf Neto ◽  
Elizabete Visone Nunes ◽  
Lucia Maria Almeida Braz ◽  
Hélio H. Caiaffa‐Filho ◽  
...  
Keyword(s):  
Human Immunodeficiency Virus ◽  
Chagas Disease ◽  
Hiv Positive ◽  
Immunodeficiency Virus ◽  
Chronic Chagas Disease ◽  
Hiv Negative

scholarly journals Human immunodeficiency virus (HIV) Tat-reactive antibodies present in normal HIV-negative sera and depleted in HIV-positive sera. Identification of the epitope.

1992 ◽  
Vol 175 (5) ◽  
pp. 1247-1253 ◽  
Author(s):  
T C Rodman ◽  
F H Pruslin ◽  
S E To ◽  
R Winston
Keyword(s):  
Human Immunodeficiency Virus ◽  
Natural Antibodies ◽  
Hiv Positive ◽  
Tat Protein ◽  
Very High Frequency ◽  
Hiv Pathogenesis ◽  
Humoral Immune ◽  
Igm Antibodies ◽  
Immunodeficiency Virus ◽  
Hiv Negative

We have detected, in sera of normal human immunodeficiency virus (HIV)-free subjects, IgM antibodies reactive with the Tat protein of HIV in significant titers and at very high frequency, and, in HIV-positive sera, progressively lower titers as HIV pathogenesis ensues. Epitope analysis indicates that the Tat-reactive antibodies of both HIV-negative and HIV-positive sera are homologous, suggesting, therefore, that their decline in HIV-positive sera may represent attrition of a host defense factor. The identified epitope displays minimal homology with that previously defined for another set of IgM antibodies shown to be present in normal sera, deficient in HIV-positive sera, and postulated to be natural antibodies. We propose that the Tat-reactive antibodies, as well, are a set of natural antibodies and that the normal humoral immune system includes a repertoire of antibodies, nonimmunogenic in origin, that contribute to immune homeostasis and, consequently, to host resistance to HIV pathogenesis.

scholarly journals Cardiovascular Autonomic Dysfunction in Africans Infected with Human Immunodeficiency Virus

2002 ◽  
Vol 95 (9) ◽  
pp. 445-447 ◽  
Author(s):  
Divine Nzuobontane ◽  
Blackett Kathleen Ngu ◽  
Kuaban Christopher
Keyword(s):  
Blood Pressure ◽  
Human Immunodeficiency Virus ◽  
Autonomic Dysfunction ◽  
Hiv Positive ◽  
Cardiovascular Autonomic Dysfunction ◽  
Hiv Test ◽  
Immunodeficiency Virus ◽  
Blood Pressure Responses ◽  
African Patients ◽  
Hiv Negative

The effects of human immunodeficiency virus (HIV) on cardiovascular autonomic function have been little investigated in African patients. We performed standard heart-rate and blood pressure tests on 75 consecutive consenting patients referred for an HIV test in Yaounde, Cameroon. 54 patients proved to be HIV-infected (30 having progressed to AIDS). Cardiovascular autonomic dysfunction was present in 8 (28%) patients with AIDS and in 1 (4%) HIV-positive patient without AIDS; no HIV-negative individuals had abnormal results. If borderline results are included, over 80% of HIV-positive patients had cardiovascular autonomic dysfunction. In HIV-infected patients, simple tests such as blood pressure responses to standing or handgrip can warn of cardiovascular autonomic dysfunction, thus signalling the need for added precautions when invasive procedures are proposed.

scholarly journals Levels of Macrophage Inflammatory Protein 1α (MIP-1α) and MIP-1β in Intervillous Blood Plasma Samples from Women with Placental Malaria and Human Immunodeficiency Virus Infection

2003 ◽  
Vol 10 (4) ◽  
pp. 631-636 ◽  
Author(s):  
Sujittra Chaisavaneeyakorn ◽  
Julie M. Moore ◽  
Lisa Mirel ◽  
Caroline Othoro ◽  
Juliana Otieno ◽  
...  
Keyword(s):  
Human Immunodeficiency Virus ◽  
Hiv Infection ◽  
Blood Plasma ◽  
Plasma Levels ◽  
Placental Malaria ◽  
Hiv Positive ◽  
Inflammatory Protein ◽  
Immunodeficiency Virus ◽  
Macrophage Inflammatory Protein ◽  
Hiv Negative

ABSTRACT Macrophage inflammatory protein-1α (MIP-1α) and MIP-1β play an important role in modulating immune responses. To understand their importance in immunity to placental malaria (PM) and in human immunodeficiency virus (HIV)-PM coinfection, we investigated levels of these chemokines in the placental intervillous blood plasma (IVB plasma) and cord blood plasma of HIV-negative PM-negative, HIV-negative PM-positive, HIV-positive PM-negative, and HIV-positive PM-positive women. Compared to HIV-negative PM-negative women, the MIP-1β concentration in IVB plasma was significantly elevated in HIV-negative PM-positive women and HIV-positive PM-positive women, but it was unaltered in HIV-positive PM-negative women. Also, PM-infected women, irrespective of their HIV status, had significantly higher levels of MIP-1β than HIV-positive PM-negative women. The MIP-1α level was not altered in association with either infection. The IVB plasma levels of MIP-1α and MIP-1β positively correlated with the cord blood plasma levels of these chemokines. As with IVB plasma, only cord plasma from PM-infected mothers had significantly elevated levels of MIP-1β compared to PM-negative mothers, irrespective of their HIV infection status. MIP-1β and MIP-1α levels in PM-positive women were positively associated with parasite density and malaria pigment levels. Regardless of HIV serostatus, the IVB MIP-1β level was significantly lower in women with PM-associated anemia. In summary, an elevated level of MIP-1β was associated with PM. HIV infection did not significantly alter these two chemokine levels in IVB plasma.

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