Current HIV Research - Current Issue

Pregnancy among women infected with HIV is classified as a high-risk pregnancy. While previous research has indicated an elevated likelihood of preterm birth, low birth weight, and early gestational age in infants born to mothers with HIV, the correlation between maternal HIV infection and different neonatal results remains unclear.

This study aims to investigate the impact of maternal HIV infection on after-birth neonatal outcomes using machine learning (ML) and statistical methods.

A case-control study is conducted through a three-stage process: Initially, the outcomes among newborns from HIV-positive mothers are identified through a combination of literature review and expert survey. Subsequently, data are paired at a 1:2 ratio based on gestational age with infants from HIV-positive mothers (n=48) compared to HIV-negative mothers (n=96) as the control group. Finally, filter, wrapper and embedded based feature selection techniques are applied to identify outcomes that exhibit significant differences between the two groups. feature selection techniques are applied to identify outcomes that exhibit significant differences between the two groups.

The statistical analysis showed that the rate of addiction among HIV-positive mothers is higher than that of the HIV-negative group. The need for mechanical ventilation and duration of ventilator-assisted breathing in infants born to HIV-positive mothers are significantly higher than in infants born to HIV-negative mothers. Moreover, based on feature selection methods, increasing the need for mechanical ventilation and reducing surfactant administration were two important outcomes.

To investigate the impact of maternal HIV infection on neonatal outcomes, various statistical and machine learning-based feature selection techniques were implemented, and the results showed that the presented methods can be utilized to examine the potential impacts of different diseases contracted by the mother on the infant.

Therapeutic measures have been successful in increasing survival rates and quality of life of HIV/AIDS-infected people. However, some people fail to respond to antiretroviral therapy (HAART) because of viral resistance-associated mutations.

To identify virus genotype and the presence of mutations that alter the susceptibility to HAART, and factors associated with the occurrence of these mutations.

A cross-sectional study was conducted on adults living with HIV attending a specialized outpatient clinic in southern Santa Catarina, Brazil. The participants were interviewed and had blood samples collected for analysis. Those with detectable viral load were genotyped.

Out of the 629 patients recruited, 127 subjects were included due to having a detectable viral load. The most common mutations were M184V and K103N. HIV-1 subtype C was the most prevalent strain. Resistance to HAART was associated with modification in the treatment regimen (p <0.001).

This study concluded that the circulating subtype virus was subtype C and that the mutations K103N and M184V were the most prevalent strains in southern Santa Catarina, Brazil.

Vitamin D deficiency and/or insufficiency (hypovitaminosis D) has been associated with several disorders including autoimmune diseases, like type 1 diabetes mellitus; cardiovascular diseases; neoplasms; obesity; insulin resistance, and type 2 diabetes mellitus. This problem is common in southern European countries, especially in elderly and institutionalized persons. In HIV-infected individuals, hypovitaminosis D has been correlated with various complications like tuberculosis, hyperparathyroidism, bone mass loss, premature atherosclerosis, and systemic arterial hypertension, deterioration of immune function, progression of the disease and overall mortality.

The objective of this study was to examine the prevalence and causes of hypovitaminosis D in a cohort of Greek HIV-infected patients, as well as possible complications associated with it.

All patients attending our HIV unit for a period of 5 months were included in this study. Vitamin D status, medical anamnes, and laboratory tests were obtained at baseline; patients were followed for 3 years and HIV-related complications were noted. No patient received vitamin D supplementation during the follow-up period.

Hypovitaminosis D was common, with 83.7% of the patients showing levels below 30 ng/dl and 55.4% below 20 ng/dl. After multivariable analysis, age and duration of treatment were the only significant factors for low vitamin D levels. During follow-up, 26 patients exhibited a total of 34 HIV-related complications, the most common being pneumonocystis jiroveci pneumonia (PCP). Hypovitaminosis D showed a positive correlation with overall complications, PCP as well as wasting syndrome.

Overall, our study shows that hypovitaminosis D is common in HIV-infected individuals and should probably be treated as soon as possible to protect these patients from serious HIV-related complications like PCP or wasting syndrome.

The Human Immunodeficiency Virus (HIV) and the social stigma directed toward patients with HIV are serious public health issues. We aimed to evaluate the HIV knowledge base and stigmatizing attitudes toward patients with HIV among students enrolled in medical schools in Saudi Arabia.

This cross-sectional study included students at medical colleges in Saudi Arabia and was conducted between February and March 2023. We used non-random convenience sampling with an online chain referral via a validated Arabic questionnaire composed of 35 questions. Data were analyzed using descriptive and comparative statistics.

A total of 1,213 medical students (women: 56.6%) participated in the study. Students in clinical years had a higher level of HIV knowledge than their pre-clinical colleagues. Logistic regression analysis revealed that participants who gave incorrect answers to questions related to mother-to-child and casual contact HIV transmission had a higher likelihood of harboring a negative attitude towards patients with HIV. Conversely, those who correctly answered queries on prevention and treatment were less likely to have stigmatizing attitudes. A significant proportion of this cohort harbored negative attitudes toward patients with HIV, with the sex and geographic location of participants being significant predictors of negative attitudes.

Our data have revealed a significant percentage of medical students in Saudi Arabia to have misconceptions about HIV transmission and prevention, and stigmatizing attitudes toward patients with HIV, indicating a need for targeted interventions to enhance the HIV knowledge base in this population of future caregivers.

Different ART (antiretroviral therapy) options may affect the risk of osteopenia/osteoporosis in people living with HIV (PLWH) having increased life expectancy. Current guidelines recommend bone mineral density (BMD) measurement only in patients at risk. In our study, we investigated the prevalence of osteopenia/osteoporosis and associated risk factors in naive patients not receiving ART.

This study included 116 newly diagnosed, ART naive HIV-positive patients who were studied retrospectively. Vitamin D level, BMD measurement, CD4 and CD8 count, CD4/CD8 ratio, HIV RNA level, body mass index and other risk parameters of ART naive patients were included in our study.

Of 116 patients, 103 were male and 13 female. 47.4% (osteoporosis in 4.3%, osteopenia in 43.1%) of patients had osteopenia/osteoporosis. The patients with osteopenia/osteoporosis had older age (39.2±11.0 vs. 32.0±8.6, p=0.0001), lower vitamin D levels (16.0±5.0 vs. 24.4±6.3, p=0.0001), lower BMI (body mass index) (23.0±4.0 vs. 24.6±4.6 p<0.05), lower CD4 and CD8 counts (405.1±885.0 vs. 467.3± 695.1; 849.9570.4 vs. 1012.0±629.4, respectively, p<0.05). 41.8% had CD4 count ≤200/µL (vs. 18.0%, p=0.005). No statistically significant differences were observed in terms of gender distribution, smoking, alcohol and drug use, comorbidities and, additional drug use and HIV RNA >100 000 copies/ml. In multivariate analysis, age and vitamin D level were significant and independent (p<0.05) risk factors with osteoporosis/osteopenia.

Being over 40 years of age, CD4 count ≤200/µL, vitamin D level <20 ng/mL and low BMI are the most important risk factors for osteopenia/osteoporosis in ART naive patients. Among these parameters, age and vitamin D level were significant and independent risk factors. These factors may guide the determination of the need for dual-energy x-ray absorptiometry (DXA) testing in ART naive patients and drug choices in the treatment plan.

Abacavir is among the first-line initial antiretroviral regimens for most patients living with HIV/AIDS (PLWHA). Although well tolerated, it is associated with hypersensitivity reaction (HSR), which is treatment-limiting and potentially life-threatening. HSR was shown to be associated with the class I MHC allele, HLA-B*57:01. In this study, we aimed to evaluate the prevalence of HLA-B*57:01 in PLWHA in Istanbul, Türkiye.

Five HIV treatment centers in Istanbul included all sequential treatmentnaïve, ≥ 18 years adult PLWHA, between December 2017- December 2021. Demographic, clinical, and laboratory data were collected at baseline and during treatment. HLA-B* 57:01 genotyping was determined with PCR-SSP.

Eight hundred sixty-seven PLWHA were included (male:91%, mean age 39.6±11.1 years). 1.6% of patients were found to be HLA-B*57:01 positive. Among HLA-B*57:01 positive patients, 4 were initially given abacavir-containing treatment; they were switched to non-abacavir treatment upon the allele found to be positive.

Although previous studies reported the HLA-B*57:01 prevalence of PLWHA in Türkiye as 3-3.6%, we have found the prevalence to be 1.6%. The current study includes higher numbers of patients than the previous studies. Furthermore, patients from all over the country apply to the centers in Istanbul; compared to the other studies, which involve patients limited to the relevant regions. It can be assumed that the number in our cohort is more representative of the country. In conclusion, the prevalence of the HLA-B*57:01 allele in PLWHA in this study is relatively low. With evident benefit in preventing abacavir HSR, HLA-B*57:01 should be screened in planning antiretroviral therapy.

This study aims to investigate the factors associated with sexual initiation among male vocational high school students (MVHSS) in Zhejiang Province, and provide a scientific basis for preventing unsafe sexual behavior and sexual health issues among adolescents.

The prevalence of sexual behavior among young students has risen significantly in recent years. Contracting HIV poses a serious physical and psychological burden on young individuals and their families. Thus, it is imperative to promptly and effectively address the spread of HIV among young people.

The objectives of this study are to investigate the demographic characteristics of male vocational high school students (MVHSS) who have engaged in sexual activity and to identify associated factors, such as sexual attitudes and lifestyle, that may influence sexual initiation among this population, and to offer recommendations for interventions and policy development aimed at promoting healthy sexual behaviors among MVHSS.

A survey was conducted among vocational high school students in grades one and two in Zhejiang Province. Variables that were statistically significantly associated with sexual initiation in bivariate analyses were included in a multivariate logistic regression model, which adopted a backward elimination procedure with a p-value > 0.10 as the exclusion criterion. Odds ratios (ORs) and 95% confidence intervals (CIs) were used to describe the relationship between dependent and outcome variables.

Of the 1032 male participants, 17.4% had initiated sexual behavior. The multivariate analysis results indicated that those who were frequent smokers (adjusted OR[AOR] =4.89, 95% CI: 2.36–10.13), those who reported having been in love (AOR=2.86, 95% CI: 1.84–4.44), those currently in love (AOR=4.47, 95% CI: 2.68–7.45), those willing to have sex with a high school student (AOR =2.63, 95% CI: 3.31–6.50), those willing to pay for sex (AOR =1.90, 95% CI: 1.10–3.27), and those who had received sex education and STDs/AIDS prevention education in school (AOR =2.21, 95% CI: 1.53–3.18) were more likely to initiate sexual behavior.

Sexual attitudes among MVHSS are liberal, and the prevalence of sexual initiation is high. Interventions targeted at improving sexual safety education, reducing the rate of early initiation of sexual behavior, and promoting condom use among students must be implemented to reduce the risk of HIV infections and STDs among sexually active MVHSS.