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TB vitamin D

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https://www.readbyqxmd.com/read/28193202/association-of-high-serum-vitamin-d-concentrations-with-active-pulmonary-tb-in-an-hiv-co-endemic-setting-harare-zimbabwe
#1
Cuthbert Musarurwa, Lynn Sodai Zijenah, Doreen Zvipo Duri, Kudzie Mateveke-Dangaiso, Kudakwashe Mhandire, Maria Mary Chipiti, Marshall Wesley Munjoma, Witmore Bayayi Mujaji
BACKGROUND: There is paucity data on the association of vitamin D deficiency (VDD) and active tuberculosis (TB) in southern Africa where the human immunodeficiency virus (HIV) is co-endemic. We examined the association of serum vitamin D concentrations with active pulmonary tuberculosis (PTB) in HIV-infected (n = 284) and uninfected (n = 267) Black Zimbabweans, in Harare, Zimbabwe. METHODS: We conducted a cross-sectional study of 551 participants comprising 145 HIV(+)/PTB (+), 139 HIV(+)/PTB(-), 134 HIV(-)/PTB(+) and 133 HIV(-)/PTB(-)...
February 13, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28183335/efficacy-of-vitamin-d3-supplementation-in-reducing-incidence-of-pulmonary-tuberculosis-and-mortality-among-hiv-infected-tanzanian-adults-initiating-antiretroviral-therapy-study-protocol-for-a-randomized-controlled-trial
#2
Christopher R Sudfeld, Ferdinand Mugusi, Said Aboud, Tumaini J Nagu, Molin Wang, Wafaie W Fawzi
BACKGROUND: HIV-infected adults initiating antiretroviral therapy (ART) in sub-Saharan Africa continue to experience high rates of morbidity and mortality during the initial months of treatment. Observational studies in high-income and resource-limited settings indicate that HIV-infected adults with low vitamin D levels may be at increased risk of mortality, HIV disease progression, and incidence of pulmonary tuberculosis (TB). As a result, vitamin D3 supplementation may improve survival and treatment outcomes for HIV-infected adults initiating ART...
February 10, 2017: Trials
https://www.readbyqxmd.com/read/28169875/vitamin-a-and-d-deficiencies-associated-with-incident-tuberculosis-in-hiv-infected-patients-initiating-antiretroviral-therapy-in-multinational-case-cohort-study
#3
Mark W Tenforde, Ashish Yadav, David W Dowdy, Nikhil Gupte, Rupak Shivakoti, Wei-Teng Yang, Noluthando Mwelase, Cecilia Kanyama, Sandy Pillay, Wadzanai Samaneka, Breno Santos, Selvamuthu Poongulali, Srikanth Tripathy, Cynthia Riviere, Sima Berendes, Javier R Lama, Sandra W Cardoso, Patcharaphan Sugandhavesa, Parul Christian, Richard D Semba, Thomas B Campbell, Amita Gupta
INTRODUCTION: Numerous micronutrients have immunomodulatory roles that may influence risk of tuberculosis (TB), but the association between baseline micronutrient deficiencies and incident TB after antiretroviral (ART) initiation in HIV-infected individuals is not well characterized. METHODS: We conducted a case-cohort study (n=332) within a randomized trial comparing three ART regimens in 1571 HIV treatment-naïve adults from nine countries. A subcohort of 30 patients was randomly selected from each country (n=270)...
February 6, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28111615/the-effects-of-first-line-anti-tuberculosis-drugs-on-the-actions-of-vitamin-d-in-human-macrophages
#4
Supavit Chesdachai, Susu M Zughaier, Li Hao, Russell R Kempker, Henry M Blumberg, Thomas R Ziegler, Vin Tangpricha
Tuberculosis (TB) is a major global health problem. Patients with TB have a high rate of vitamin D deficiency, both at diagnosis and during the course of treatment with anti-tuberculosis drugs. Although data on the efficacy of vitamin D supplementation on Mycobacterium tuberculosis (Mtb) clearance is uncertain from randomized controlled trials (RCTs), vitamin D enhances the expression of the anti-microbial peptide human cathelicidin (hCAP18) in cultured macrophages in vitro. One possible explanation for the mixed (primarily negative) results of RCTs examining vitamin D treatment in TB infection is that anti-TB drugs given to enrolled subjects may impact actions of vitamin D to enhance cathelicidin in macrophages...
December 2016: Journal of Clinical & Translational Endocrinology
https://www.readbyqxmd.com/read/28096657/vitamin-d-deficiency-and-the-risk-of-tuberculosis-a-meta-analysis
#5
Shao-Jun Huang, Xian-Hua Wang, Zhi-Dong Liu, Wen-Li Cao, Yi Han, Ai-Guo Ma, Shao-Fa Xu
BACKGROUND AND AIM: To conduct meta-analyses of all published studies on various aspects of association between vitamin D and tuberculosis (TB). METHODS: PubMed and Web of Knowledge were searched for all properly controlled studies on vitamin D and TB. Pooled odds ratio, mean difference or standardized mean difference, and its corresponding 95% confidence interval were calculated with the Cochrane Review Manager 5.3. RESULTS: A significantly lower vitamin D level was found in TB patients vs controls; vitamin D deficiency (VDD) was associated with an increased risk of TB, although such an association was lacking in the African population and in the human immunodeficiency virus-infected African population...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28000582/seasonality-of-tuberculosis-in-israel-2001-2011
#6
I Margalit, C Block, Z Mor
BACKGROUND: Several studies have suggested that the incidence of tuberculosis (TB) varies with the seasons. OBJECTIVE: To determine the seasonality of TB in Israel and to explore possible associations with climatic variables. METHODS: Laboratory-confirmed TB cases reported between 2001 and 2011 in individuals resident in Israel for at least 1 year before diagnosis were included in the study. Climatic variables included average temperature and average ultraviolet radiation...
December 1, 2016: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/27931332/seasonality-of-tuberculosis-in-israel-20012011
#7
I Margalit, C Block, Z Mor
BACKGROUND: Several studies have suggested that the incidence of tuberculosis (TB) varies with the seasons. OBJECTIVE: To determine the seasonality of TB in Israel and to explore possible associations with climatic variables. METHODS: Laboratory-confirmed TB cases reported between 2001 and 2011 in individuals resident in Israel for at least 1 year before diagnosis were included in the study. Climatic variables included average temperature and average ultraviolet radiation...
December 2016: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/27826955/vitamin-d-supplementation-for-preventing-infections-in-children-under-five-years-of-age
#8
REVIEW
Mohammad Y Yakoob, Rehana A Salam, Farhan R Khan, Zulfiqar A Bhutta
BACKGROUND: Vitamin D is a micronutrient important for bone growth and immune function. Deficiency can lead to rickets and has been linked to various infections, including respiratory infections. The evidence on the effects of supplementation on infections in children has not been assessed systematically. OBJECTIVES: To evaluate the role of vitamin D supplementation in preventing pneumonia, tuberculosis (TB), diarrhoea, and malaria in children under five years of age...
9, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27809789/association-between-tuberculosis-diabetes-and-25-hydroxyvitamin-d-in-tanzania-a-longitudinal-case-control-study
#9
Noémie Boillat-Blanco, Pascal Bovet, Kaushik L Ramaiya, Maliwasa Mganga, Lilian T Minja, Lanja Saleh, Medea Imboden, Christian Schindler, Sebastien Gagneux, Claudia Daubenberger, Klaus Reither, Nicole Probst-Hensch
BACKGROUND: Vitamin D level is inversely associated with tuberculosis (TB) and diabetes (DM). Vitamin D could be a mediator in the association between TB and DM. We examined the associations between vitamin D, TB and DM. METHODS: Consecutive adults with TB and sex- and age-matched volunteers were included in a case-control study in Dar es Salaam, Tanzania. Glycemia and total vitamin D (25(OH)D) were measured at enrolment and after TB treatment in cases. The association between low 25(OH)D (<75 nmol/l) and TB was evaluated by logistic regression adjusted for age, sex, body mass index, socioeconomic status, sunshine hours, HIV and an interaction between low 25(OH)D and hyperglycemia...
November 3, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27785354/the-frequency-distribution-of-vitamin-d-receptor-fok-i-gene-polymorphism-among-ugandan-pulmonary-tb-patients
#10
Ester L Acen, William Worodria, Peter Mulamba, Andrew Kambugu, Joseph Erume
Background:Mycobacterium tuberculosis (TB) is still a major problem globally and especially in Africa. Vitamin D deficiency has been linked to TB in the past and studies have found vitamin D deficiency to be common among Ugandan TB patients. The functional activity of vitamin D is dependent on the genotype of the vitamin D receptor (VDR) polymorphic genes. Recent findings have indicated that VDR polymorphisms may cause increased resistance or susceptibility to TB. The vitamin D ligand and its receptor play a pivotal role in innate immunity by eliciting antimicrobial activity, which is important in prevention of TB...
2016: F1000Research
https://www.readbyqxmd.com/read/27695504/vitamin-d-receptor-gene-foki-polymorphisms-and-tuberculosis-susceptibility-a-meta-analysis
#11
REVIEW
Yan Cao, Xinjing Wang, Zhihong Cao, Xiaoxing Cheng
INTRODUCTION: The association between FokI polymorphism of vitamin D receptor (VDR) and tuberculosis (TB) susceptibility has been investigated previously; however, the results were inconsistent and conflicting. In the present study, a meta-analysis was performed to assess the relationship between VDR FokI gene polymorphism and the risk of TB. MATERIAL AND METHODS: Databases including PubMed and Embase were searched for genetic association studies of FokI polymorphism of vitamin D receptor (VDR) and TB...
October 1, 2016: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/27663379/association-between-vitamin-d-supplementation-and-severity-of-tuberculosis-in-wild-boar-and-red-deer
#12
D Risco, F J Salguero, R Cerrato, J Gutierrez-Merino, S Lanham-New, O Barquero-Pérez, J Hermoso de Mendoza, P Fernández-Llario
Tuberculosis (TB) is a chronic disease affecting humans and other mammal species. Severity of TB caused by Mycobacterium tuberculosis in humans seems to be influenced by nutritional factors like vitamin D3 intake. However, this relationship has been scarcely studied in cattle and other mammals infected with Mycobacterium bovis. The aim of this work was to assess if wildlife reservoirs of M. bovis show different levels of TB severity depending on the level of vitamin D found in serum after supplementation with vitamin D3...
October 2016: Research in Veterinary Science
https://www.readbyqxmd.com/read/27574607/abdominal-tuberculosis-diagnosis-and-demographics-a-10-year-retrospective-review-from-a-single-centre
#13
Jeremy S Nayagam, Claire Mullender, Catherine Cosgrove, Andrew Poullis
AIM: To review all cases of abdominal tuberculosis (ATB) for demographic details, diagnostic work up and evidence of vitamin D deficiency. METHODS: This was a retrospective analysis of all patients diagnosed with ATB from June 2003 to August 2013 at St George's Hospital, London. Demographic data was available from the local tuberculosis database. Further clinical information was collected from electronic patient records, including radiology, endoscopy, microbiology, histology, biochemistry and serology...
August 16, 2016: World Journal of Clinical Cases
https://www.readbyqxmd.com/read/27559961/prevalence-and-risk-factors-for-efavirenz-based-antiretroviral-treatment-associated-severe-vitamin-d-deficiency-a-prospective-cohort-study
#14
Hanna Nylén, Abiy Habtewold, Eyasu Makonnen, Getnet Yimer, Leif Bertilsson, Jürgen Burhenne, Ulf Diczfalusy, Eleni Aklillu
Initiation of efavirenz-based combination antiretroviral therapy (cART) is associated with Vitamin D deficiency, but the risk factors including efavirenz pharmacokinetics for cART-induced severe vitamin D deficiency (SVDD) and the impact of anti-tuberculosis (TB) cotreatment are not explored. We investigated the prevalence of SVDD in HIV and TB-HIV coinfected patients and associated risk factors for treatment-induced SVDD.Treatment-naïve Ethiopian HIV patients with (n = 102) or without (n = 89) TB co-infection were enrolled prospectively and received efavirenz-based cART...
August 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27553417/dissecting-host-factors-that-regulate-the-early-stages-of-tuberculosis-infection
#15
Neha Agrawal, Chandrika Bhattacharyya, Ankur Mukherjee, Ubaid Ullah, Bhaswati Pandit, Kanury V S Rao, Partha P Majumder
Incomplete understanding of mechanisms involved in the host-pathogen interactions constrains our efforts to eliminate tuberculosis. In many individuals, resulting from immune response to mycobacterial infection organised structures called granulomas are formed. To identify host responses that may control at least the early stages of infection, we employed an in vitro granuloma model. Here, human PBMCs were infected with live Mycobacterium tuberculosis in culture, and the appearance of granuloma-like structures was monitored over the next several days...
September 2016: Tuberculosis
https://www.readbyqxmd.com/read/27382213/a-cross-sectional-study-of-postpartum-changes-in-bone-status-in-indian-mothers
#16
Neha Kajale, Anuradha Khadilkar, Shashi Chiplonkar, Zulf Mughal, Vaman Khadilkar, Nina Mansukhani
BACKGROUND: Bone turnover is high during lactation. However, studies on bone status of Indian urban mothers are scarce. Hence, the objective was to conduct a cross-sectional study on the lactation-related changes in bone health status of Indian mothers postpartum using Dual X-ray Absorptiometry (DXA) at 3 time points: within a week of delivery, at 1- and 3-years postpartum. We also explored the association of dietary calcium intake, physical activity, serum vitamin D status, and dietary traditional food supplements (Dietary Food supplements) with bone health...
August 2016: Journal of Obstetrics and Gynaecology of India
https://www.readbyqxmd.com/read/27357175/bone-mineral-density-is-positively-related-to-carotid-intima-media-thickness-findings-from-a-population-based-study-in-adolescents-and-premenopausal-women
#17
Monika Frysz, Kevin Deere, Debbie A Lawlor, Li Benfield, Jon H Tobias, Celia L Gregson
Osteoporosis and cardiovascular disease (CVD) are both common causes of morbidity and mortality. Previous studies, mainly of people older than 60 years, suggest a relationship between these conditions. Our aim was to determine the association between bone characteristics and CVD markers in younger and middle-aged individuals. Women (n = 3366) and their adolescent offspring (n = 4368) from the UK population-based cohort study, Avon Longitudinal Study of Parents and Children (ALSPAC), were investigated...
December 2016: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/27160686/vitamin-d-deficiency-associates-with-susceptibility-to-tuberculosis-in-pakistan-but-polymorphisms-in-vdr-dbp-and-cyp2r1-do-not
#18
Kashaf Junaid, Abdul Rehman, David A Jolliffe, Tahir Saeed, Kristie Wood, Adrian R Martineau
BACKGROUND: Single nucleotide polymorphisms (SNPs) in the genes encoding the vitamin D receptor (VDR) and the vitamin D binding protein (DBP) have been reported to modify the influence of vitamin D deficiency on susceptibility to active tuberculosis (TB) in the UK, but this phenomenon has not been investigated in settings with a high TB burden. SNPs in CYP2R1, which encodes a vitamin D 25-hydroxylase enzyme, are known to influence vitamin D status, but their potential role in determining susceptibility to TB has not previously been investigated in any setting...
May 10, 2016: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/27156622/elevated-serum-25-hydroxy-oh-vitamin-d-levels-are-associated-with-risk-of-tb-progression-in-gambian-adults
#19
Olumuyiwa Owolabi, Schadrac Agbla, Patrick Owiafe, Simon Donkor, Toyin Togun, Abdou K Sillah, Martin O C Ota, Jayne S Sutherland
BACKGROUND: Vitamin D is essential in the host defence against tuberculosis (TB) as an immune modulator. The aim of this study was to determine the level of 25-hydroxyvitamin D (25 (OH) D) from adult TB index cases before and after treatment and their exposed household contacts (HHC) in The Gambia. METHODS: Serum from adult index TB cases and their TB-exposed household contacts (HHC) was analysed for 25(OH) D and Vitamin D binding protein (VDBP) concentrations. Tuberculin skin test (TST) status was used as a measure of Mycobacterium tuberculosis (Mtb) infectivity in the HHC...
May 2016: Tuberculosis
https://www.readbyqxmd.com/read/27054593/bone-mineral-density-in-young-chilean-patients-with-type-1-diabetes-mellitus
#20
Constanza Mosso, María Isabel Hodgson, Tamara Ortiz, Maria Loreto Reyes
BACKGROUND: In this study, our aim was to analyze bone mineral density (BMD) in patients with type 1 diabetes mellitus (T1DM) and compare them with a healthy reference population; in addition, we aimed to observe the association between BMD and the following variables: age at onset, disease duration, metabolic control, pubertal stage, level of physical activity, clinical parameters and nutrient intake. METHODS: A total of 30 patients with T1DM were included in the study...
June 1, 2016: Journal of Pediatric Endocrinology & Metabolism: JPEM
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