1,200 pregnant women (600 HIV+ mothers and 600 HIV-controls) in their third trimester were enrolled from January 2016 to June 2019. Participants are being followed as mother-baby pairs at birth, within 10 days of life 6, 10, 14 24, 48, 72 and 96 weeks of age. At each visit clinical examinations are being used to assess health and the impact of environmental factors. In addition, questionnaires are administered and bio-samples for laboratory tests. The design of the study is non-interventional cohort but participants are being offered advice regarding health and hygiene.

maternal urine, stool, plasma, milk, cord blood, amniotic fluid, placenta, infant serum/plasma, dried blood spots and stool

HIV Infections

Immune Activation

Cormobidities

The University of Zimbabwe College of Health Science (UZ-CHS) BIRTH COHORT Study

HIV Exposure, Disease Acquisition and Progression Among Children: Role of Maternal Immunogenetics, Viral Genetic Diversity, HAART Exposure, Co-morbidities and Psycho-Social Status: (UZ-CHS Birth Cohort)

Comparison of morbidity of HEU vs. HUU infants, defined as impaired growth, immune- and neuro-development and/ or frequent clinically relevant infections

To determine any association of maternal HIV infection, HAART exposure.

To determine any association with maternal HIV and HAART exposure.

To determine any association of HAART exposure in utero and during breast feeding with pregnancy outcome, infant (HUU, HEU, HEI) growth and immune- and neuro-development.

To determine vertical transmission rates for HIV at birth and within the first 2 years of life and assess risk factors for transmission

HIV incidence rate among mother sero-negative at enrollment

To determine the association between maternal baseline and delivery HAART levels in different compartments and the relation of those to infant HIV transmission, mortality and morbidity.

To determine the association between antenatal immune dysregulation and infant death, growth and immune responses to vaccines.

To determine HIV drug resistance profiles in mother and infants unresponsive to HAART

To determine how CMV DNA is influenced by HIV infection, HAART use and as single infection or combined infections in HIV+ and HIV- women and determine the impact on pregnancy outcome and infant cmv vertical transmission

To determine how HBV infection infections in HIV+ and HIV- women and determine the impact on pregnancy outcome, infant vertical transmission

To determine HCV infections proportion in HIV positives and negatives and HIV+ and HIV- women and determine the impact on pregnancy outcome, infant incidence of congenital cmv infection

To determine syphilis infections proportion in HIV positives and negatives and the impact on pregnancy outcome, infant incidence of congenital syphilis infection

To determine the prevalence of helminthes infection using 18s sequencing and correlate with infant development of atopic dermatitis.

To determine the prevalence of maternal under and overnutrition using BMI and MUAC impact on pregnancy outcomes, infant mortality and morbidity.

To assess abnormalities in HIV + and HIV- including lipid profiles, bone, haematological (anemia) and hepatic toxicities associated with exposure to HAART among mothers and infants.

To determine infant non-infectious comorbidities (e.g. anaemia, atopic dermatitis, congenital infections and other conditions) and their impact on mortality and morbidity.

To assess delayed neuro-cognitive development using the Denver II tool in HUU, HEU and HEI infants and correlated with socio economic status and infectious diseases.

To determine humoural immune responses to EPI vaccines including antibody levels against measles, tetanus, diphtheria, pertussis, polio and rotavirus) in HUU, HEU and HEI infants.

To determine immune activation and systemic inflammatory biomarkers in HUU, HEU and HEI infants

To determine biomarkers for endothelial dysfunction including microbial translocation in HUU, HEU and HEI infants and association with household hygiene at delivery, 6, 48 and 96 weeks of age.

To determine antenatal reference ranges for MUAC, haemoglobin from FBC analyses, and biochemistry (kidney function, liver function tests, bone, lipid profiles) in mothers with a favourable outcome of pregnancy

To determine maternal- infant microbiota16S sequencing in pregnancy and relate it to infant immune development and atopy (anti-inflammatory (IL-4, -5, -13) and regulatory cytokines (IL-10, TGF-β) at delivery, 6 weeks 48 and 96 weeks of age.

Bacterial full genome metagenomics shotgun sequencing to identify the microbiota metabolic potential (i.e. bacterial genes present will be done) and mass spectrometry will be performed for analysis of small intestinal content (metabolome).

Wide range of nutritional profiles and HAART levels spectrometry will be performed for analysis of at least 700 metabolites including amino acids and lipids will be performed in plasma, breast milk and stool samples

To characterize pathogen genetic diversity including HIV, HBV, HCV, CMV subtypes, prevalent in our study population at time of infection

To determine host genetic markers for infectious disease susceptibility including human leukocyte antigen (HLA) and killer immunoglobulin like receptor (KIR) gene variants and their association with infection rates of HIV and co-infections in mothers and their infants.

Only anonymous data will be stored at local sites and transferred between sites for collaborative research efforts. All original data will be stored locally at the UZ-CHS for at least 10 years on suitable electronic devices. Data transfer with collaborating partners will be encrypted. using EGAcryptor. With our European partners we will follow the current European General Data Protection Regulation effective May 25, 2018.

Kerina Duri

Associate Professor

University of Zimbabwe

University Hospital Inselspital, Berne

University of Hamburg

University of Oxford

Wellcome Trust

University of Yaounde

University of Cape Town

Midlands State University, Zimbabwe

National Institute of Health Research, Zimbabwe

PBMCs will be cryopreserved to assess HBV specific T and B cell responses.

Non-Alcoholic Fatty Liver Disease

Hepatitis B

Vaccine Reaction

Engerix-B

University of Calgary

A Prospective Study of HBV Immunity and HBV Vaccination in Patients With NAFLD in Canada

A Prospective Study of Hepatitis B Virus (HBV) Immunity and Hepatitis B Vaccination in Patients With Non Alcoholic Fatty Liver Disease (NAFLD) in Canada

to determine how NAFLD-associated metabolic risk factors and liver inflammation / fibrosis affects vaccine response

Canadian Institutes of Health Research (CIHR)

GlaxoSmithKline

13 obese and insulin resistant, non-cirrhotic, non-diabetic (by fasting glucose), non-genotype 3 patients with chronic hepatitis C (HCV RNA positive) will undergo 24 week lifestyle intervention comprising diet, physical activity (monitored by pedometers) in combination with behavior modification counseling. This arm includes patients who are naive to antiviral therapy, relapsed or not responded to antiviral therapy.

13 obese and insulin resistant, non-cirrhotic, non-diabetic (by fasting glucose), non-genotype 3 patients with cured chronic hepatitis C (HCV RNA negative) will undergo 24 week lifestyle intervention comprising diet, physical activity (monitored by pedometers) in combination with behavior modification counseling. This arm includes patients who have cleared hepatitis C virus with previous antiviral therapy.

13 obese and insulin resistant, cirrhotic, non-diabetic (by fasting glucose), non-genotype 3 patients with chronic hepatitis C (HCV RNA positive) will undergo 24 week lifestyle intervention comprising diet, physical activity (monitored by pedometers) in combination with behavior modification counseling. This arm includes patients who are naive to antiviral therapy, relapsed or not responded to antiviral therapy.

13 obese and insulin resistant, cirrhotic, non-diabetic (by fasting glucose), non-genotype 3 patients with cured chronic hepatitis C (HCV RNA negative) will undergo 24 week lifestyle intervention comprising diet, physical activity (monitored by pedometers) in combination with behavior modification counseling. This arm includes patients who have cleared hepatitis C virus with previous antiviral therapy

Obesity

Insulin Resistance

Metabolic Syndrome

Hepatitis C

The 3-pronged lifestyle intervention is designed to deliver a period of intensive contact (week 0-12) and less-intensive contact (weeks 12-24):
i) Behavior Modification Counseling: The principles of motivational enhancement and cognitive-behavior therapy (MET/CBT) will be utilized at each visit and telephone contact to provide individually tailored counseling. The goal is to enhance internal motivation and facilitate changes in lifestyle that are adaptable to each participant's usual habits.
ii) Physical activity target: increment in activity of at least 3000 steps/day above the baseline, or total activity of 10,000 steps/day (whichever is greater).
iii) Dietary assessment and nutritional plan: A diet plan designed to both lose weight and improve insulin resistance will be provided.

Lifestyle intervention

Toronto Western Hospital, University Health Network

Lifestyle Intervention Targetting Obesity and Insulin Resistance in Chronic Hepatitis C

Evaluation of the Impact of a Combined Program of Diet, Exercise and Behavior Modification on the Insulin Resistance and Adipokine Profile in Obese Patients With Current and Cured Chronic Hepatitis C.

Scores derived from glucose and insulin levels in the oral glucose tolerance test (OGTT)

viremia/obesidade

The University of Zimbabwe College of Health Science (UZ-CHS) BIRTH COHORT Study

A Prospective Study of HBV Immunity and HBV Vaccination in Patients With NAFLD in Canada

Lifestyle Intervention Targetting Obesity and Insulin Resistance in Chronic Hepatitis C

O mais completo banco de dados de ervas medicinais apoiado pela ciência