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Vitamin D infections

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https://www.readbyqxmd.com/read/28804006/vitamin-d-deficiency-is-a-risk-factor-for-infections-in-patients-affected-by-hcv-related-liver-cirrhosis
#1
Antonio Riccardo Buonomo, Emanuela Zappulo, Riccardo Scotto, Biagio Pinchera, Giuseppe Perruolo, Pietro Formisano, Guglielmo Borgia, Ivan Gentile
OBJECTIVES: To evaluate the prevalence of vitamin D deficiency and its impact on infections in HCV-related liver cirrhosis. METHODS: We enrolled 291 patients affected by HCV-related liver cirrhosis. Serum vitamin D levels were dosed at enrolment. The presence of infection was assessed at baseline and during follow-up based on physical examination and laboratory analyses. RESULTS: Vitamin D deficiency (<20ng/mL) was diagnosed in 68.3% of patients, and a total of 102 infections were detected...
August 10, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28797019/associations-of-low-vitamin-d-and-elevated-parathyroid-hormone-concentrations-with-bone-mineral-density-in-perinatally-hiv-infected-children
#2
Denise L Jacobson, Charles B Stephensen, Tracie L Miller, Kunjal Patel, Janet S Chen, Russell B Van Dyke, Ayesha Mirza, Gertrud U Schuster, Rohan Hazra, Angela Ellis, Sean S Brummel, Mitchell E Geffner, Margarita Silio, Stephen A Spector, Linda A DiMeglio
BACKGROUND: Perinatally HIV-infected (PHIV) children have, on average, lower bone mineral density (BMD) than perinatally HIV-exposed uninfected (PHEU) and healthy children. Low 25-hydroxy vitamin D [25(OH)D] and elevated parathyroid hormone (PTH) concentrations may lead to suboptimal bone accrual. METHODS: PHIV and PHEU children in the Pediatric HIV/AIDS Cohort Study had total body (TB) and lumbar spine (LS) BMD and bone mineral content (BMC) measured by dual-energy x-ray absorptiometry; BMD z-scores (BMDz) were calculated for age and sex...
September 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28777099/inflammatory-bowel-diseases-review-of-known-environmental-protective-and-risk-factors-involved
#3
Kimberley W J van der Sloot, Marzyeh Amini, Vera Peters, Gerard Dijkstra, Behrooz Z Alizadeh
Inflammatory bowel diseases consisting of Crohn's disease and ulcerative colitis are chronic inflammatory diseases of the gastrointestinal tract. In addition to genetic susceptibility and disturbances of the microbiome, environmental exposures forming the exposome play an important role. Starting at birth, the cumulative effect of different environmental exposures combined with a predetermined genetic susceptibility is thought to cause inflammatory bowel disease. All these environmental factors are part of a Western lifestyle, suiting the high incidence rates in Europe and the United States...
August 2, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28766554/campylobacter-jejuni-impairs-sodium-transport-and-epithelial-barrier-function-via-cytokine-release-in-human-colon
#4
R Bücker, S M Krug, V Moos, C Bojarski, M R Schweiger, M Kerick, A Fromm, S Janßen, M Fromm, N A Hering, B Siegmund, T Schneider, C Barmeyer, J D Schulzke
Campylobacter jejuni is the most prevalent cause of foodborne bacterial enteritis worldwide. Patients present with diarrhea and immune responses lead to complications like arthritis and irritable bowel syndrome. Although studies exist in animal and cell models, we aimed at a functional and structural characterization of intestinal dysfunction and the involved regulatory mechanisms in human colon. First, in patients' colonic biopsies, sodium malabsorption was identified as an important diarrheal mechanism resulting from hampered epithelial ion transport via impaired epithelial sodium channel (ENaC) β- and γ-subunit...
August 2, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28760906/mechanisms-of-action-of-vitamin-d-as-supplemental-therapy-for-pneumocystis-pneumonia
#5
Guang-Sheng Lei, Chen Zhang, Bi-Hua Cheng, Chao-Hung Lee
The combination of trimethoprim and sulfamethoxazole (TMP-SMX) is the most effective regimen for therapy of Pneumocystis pneumonia (PcP). As many patients with PcP are allergic or do not respond to it, efforts have been devoted to develop alternative therapies for PcP. We have found that the combination of vitamin D3 (VitD3; 300 IU/kg/day) and PMQ (5 mg/kg/day) was as effective as TMP-SMX for therapy of PcP. In this study, we investigated the mechanisms by which vitamin D enhances the efficacy of PMQ. C57BL/6 mice were immunosuppressed by CD4(+) cell depletion, infected with P...
July 31, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28756682/vitamin-d-status-and-kidney-function-decline-in-hiv-infected-men-a-longitudinal-study-in-the-multicenter-aids-cohort-study-macs
#6
Adrienne Tin, Long Zhang, Michelle M Estrella, Andrew Hoofnagle, Casey Rebholz, Todd Brown, Frank J Palella, Mallory D Witt, Lisa Jacobson, Lawrence Kingsley, Alison Abraham
Vitamin D may play an important role in a range of disease processes. In the general population, lower vitamin D levels have been associated with kidney dysfunction. HIV-infected populations have a higher risk of chronic kidney disease. Few studies have examined the link between lower vitamin D levels and kidney function decline among HIV-infected persons. We investigated the associations of serum 25-hydroxyvitamin D [25(OH)D] and 1,25-dihydroxyvitamin D [1,25(OH)2D] with kidney function decline in a cohort of HIV-infected white and black men under HAART treatment in the vitamin D ancillary study of the Multicenter AIDS Cohort Study (MACS)...
July 31, 2017: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/28756294/vitamin-d-cod-liver-oil-sunshine-and-phototherapy-safe-effective-and-forgotten-tools-for-treating-and-curing-tuberculosis-infections-a-comprehensive-review
#7
REVIEW
Patrick J McCullough, Douglas S Lehrer
Tuberculosis remains an epidemic throughout the world, with over 2 billion people, or more than one third of the world's population, infected with TB. In 2015, there were an estimated 10.4 million new cases of tuberculosis, and 1.8 million deaths, making TB one of the top ten causes of death worldwide. Approximately 95% of new TB cases occur in developing countries, where the costs of treatment force many patients and their families into poverty. The United Nations and the World Health Organization are working to end this global epidemic...
July 26, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28749951/vitamin-d-deficient-mice-have-more-invasive-urinary-tract-infection
#8
Olof Hertting, Petra Lüthje, Devin Sullivan, Pontus Aspenström, Annelie Brauner
Vitamin D deficiency is a common health problem with consequences not limited to bone and calcium hemostasis. Low levels have also been linked to tuberculosis and other respiratory infections as well as autoimmune diseases. We have previously shown that supplementation with vitamin D can induce the antimicrobial peptide cathelicidin during ex vivo infection of human urinary bladder. In rodents, however, cathelicidin expression is not linked to vitamin D and therefore this vitamin D-related effect fighting bacterial invasion is not relevant...
2017: PloS One
https://www.readbyqxmd.com/read/28744225/is-it-time-to-begin-a-public-campaign-concerning-frailty-and-pre-frailty-a-review-article
#9
REVIEW
Jerzy Sacha, Magdalena Sacha, Jacek Soboń, Zbigniew Borysiuk, Piotr Feusette
Frailty is a state that encompasses losses in physical, psychological or social domains. Therefore, frail people demonstrate a reduced potential to manage external stressors and to respond to life incidents. Consequently, such persons are prone to various adverse consequences such as falls, cognitive decline, infections, hospitalization, disability, institutionalization, and death. Pre-frailty is a condition predisposing and usually preceding the frailty state. Early detection of frailty (i.e., pre-frailty) may present an opportunity to introduce effective management to improve outcomes...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28740520/vitamin-d-levels-and-their-impact-on-mineral-metabolism-in-hiv-infected-patients-an-exploratory-study
#10
Silvina Mastaglia, Dana Watson, Natalia Bello, Vanesa Fridman, Daniel Stecher, Beatriz Oliveri
Vitamin D has immunomodulating properties. The nuclear receptor for vitamin D is expressed in several immune cells, which convert 25-hydroxyvitamin D (25OHD) to the active form 1,25 hydroxyvitamin D [1,25(OH)2 D]. Under conditions of infection, 1,25(OH)2 D promotes production of cathelicidin (an antimicrobial peptide) in monocytes and activated macrophages. In vitro studies have shown the ability of cathelicidin to inhibit replication of human immunodeficiency virus (HIV-1) in T CD4 lymphocytes and macrophages...
January 2017: Clinical Cases in Mineral and Bone Metabolism
https://www.readbyqxmd.com/read/28731372/exploring-the-effect-of-vitamin-d3-supplementation-on-the-anti-ebv-antibody-response-in-relapsing-remitting-multiple-sclerosis
#11
Linda Rolf, Anne-Hilde Muris, Amandine Mathias, Renaud Du Pasquier, Inga Koneczny, Giulio Disanto, Jens Kuhle, Sreeram Ramagopalan, Jan Damoiseaux, Joost Smolders, Raymond Hupperts
BACKGROUND: Epstein-Barr virus (EBV) infection and vitamin D insufficiency are potentially interacting risk factors for multiple sclerosis (MS). OBJECTIVES: To investigate the effect of high-dose vitamin D3 supplements on antibody levels against the EBV nuclear antigen-1 (EBNA-1) in patients with relapsing-remitting multiple sclerosis (RRMS) and to explore any underlying mechanism affecting anti-EBNA-1 antibody levels. METHODS: This study utilized blood samples from a randomized controlled trial in RRMS patients receiving either vitamin D3 (14,000 IU/day; n = 30) or placebo ( n = 23) over 48 weeks...
July 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28725308/a-case-with-vitamin-d-deficiency-induced-cytomegalovirus-enteritis-presenting-as-bowel-pseudo-obstruction
#12
Shou-Wu Lee, Chung-Wang Ko, Szu-Chia Liao, Chung-Shihn Chang, Hong-Zen Yeh, Chi-Sen Chang
Cytomegalovirus (CMV) infection in small intestines has rarely been reported. We report a 67-year-old woman with abdominal pain for 2 weeks. Abdominal computed tomography (CT) revealed wall-thickening of the segmental small bowel. Enteroscopy disclosed discrete ulcers at the jejunum, and biopsy histopathology showed positive CMV immunoreactivity. Laboratory tests showed positive blood CMV with a viral load of 9,400 DNA copies/mL and high IgG titer and low vitamin D level. After antiviral therapy and oral vitamin D supply, her symptoms improved...
June 2017: Gastroenterology Research
https://www.readbyqxmd.com/read/28719693/effect-of-high-dose-vs-standard-dose-wintertime-vitamin-d-supplementation-on-viral-upper-respiratory-tract-infections-in-young-healthy-children
#13
RANDOMIZED CONTROLLED TRIAL
Mary Aglipay, Catherine S Birken, Patricia C Parkin, Mark B Loeb, Kevin Thorpe, Yang Chen, Andreas Laupacis, Muhammad Mamdani, Colin Macarthur, Jeffrey S Hoch, Tony Mazzulli, Jonathon L Maguire
Importance: Epidemiological studies support a link between low 25-hydroxyvitamin D levels and a higher risk of viral upper respiratory tract infections. However, whether winter supplementation of vitamin D reduces the risk among children is unknown. Objective: To determine whether high-dose vs standard-dose vitamin D supplementation reduces the incidence of wintertime upper respiratory tract infections in young children. Design, Setting, and Participants: A randomized clinical trial was conducted during the winter months between September 13, 2011, and June 30, 2015, among children aged 1 through 5 years enrolled in TARGet Kids!, a multisite primary care practice-based research network in Toronto, Ontario, Canada...
July 18, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28711461/prevalence-of-comorbidities-in-rheumatoid-arthritis-and-evaluation-of-their-monitoring-in-clinical-practice-the-spanish-cohort-of-the-comora-study
#14
Alejandro Balsa, Leticia Lojo-Oliveira, Mercedes Alperi-López, María García-Manrique, Carmen Ordóñez-Cañizares, Lorena Pérez, Virginia Ruiz-Esquide, Alfonso Corrales, Javier Narváez, José Rey-Rey, Carlos Rodríguez-Lozano, Soledad Ojeda, Santiago Muñoz-Fernández, Joan M Nolla, José García-Torrón, Fernando Gamero, Rosario García-Vicuña, Blanca Hernández-Cruz, José Campos, José Rosas, José Francisco García-Llorente, Antonio Gómez-Centeno, Rafael Cáliz, Raimon Sanmartí, Alberto Bermúdez, Lydia Abasolo-Alcázar, Antonio Fernández-Nebro, Luis Rodríguez-Rodríguez, Carlos Marras, Miguel Ángel González-Gay, Ihsane Hmamouchi, Emilio Martín-Mola
OBJECTIVES: To describe the prevalence of comorbidities in patients with RA in Spain and discuss their management and implications using data from the Spanish cohort of the multinational study on COMOrbidities in Rheumatoid Arthritis (COMORA). METHODS: This is a national sub-analysis of the COMORA study. We studied the demographics and disease characteristics of 200 adults patients diagnosed with RA (1987 ACR), and routine practices for screening and preventing the following selected comorbidities: cardiovascular, infections, cancer, gastrointestinal, pulmonary, osteoporosis and depression...
July 12, 2017: Reumatología Clinica
https://www.readbyqxmd.com/read/28704538/intestinal-calcium-and-bile-salts-facilitate-germination-of-clostridium-difficile-spores
#15
Travis J Kochan, Madeline J Somers, Alyssa M Kaiser, Michelle S Shoshiev, Ada K Hagan, Jessica L Hastie, Nicole P Giordano, Ashley D Smith, Alyxandria M Schubert, Paul E Carlson, Philip C Hanna
Clostridium difficile (C. difficile) is an anaerobic gram-positive pathogen that is the leading cause of nosocomial bacterial infection globally. C. difficile infection (CDI) typically occurs after ingestion of infectious spores by a patient that has been treated with broad-spectrum antibiotics. While CDI is a toxin-mediated disease, transmission and pathogenesis are dependent on the ability to produce viable spores. These spores must become metabolically active (germinate) in order to cause disease. C. difficile spore germination occurs when spores encounter bile salts and other co-germinants within the small intestine, however, the germination signaling cascade is unclear...
July 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28701166/which-early-life-events-or-current-environmental-and-lifestyle-factors-influence-lung-function-in-adolescents-results-from-the-giniplus-lisaplus-studies
#16
Agnes Luzak, Elaine Fuertes, Claudia Flexeder, Marie Standl, Andrea von Berg, Dietrich Berdel, Sibylle Koletzko, Joachim Heinrich, Dennis Nowak, Holger Schulz
BACKGROUND: Various factors may affect lung function at different stages in life. Since investigations that simultaneously consider several factors are rare, we examined the relative importance of early life, current environmental/lifestyle factors and allergic diseases on lung function in 15-year-olds. METHODS: Best subset selection was performed for linear regression models to investigate associations between 21 diverse early life events and current factors with spirometric parameters (forced vital capacity, forced expiratory volume in 1 s and maximal mid-expiratory flow (FEF25-75)) in 1326 participants of the German GINIplus and LISAplus birth cohorts...
July 12, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28694135/characteristics-of-pediatric-multiple-sclerosis-the-turkish-pediatric-multiple-sclerosis-database
#17
Ünsal Yılmaz, Banu Anlar, Kıvılcım Gücüyener
OBJECTIVE: To document the clinical and paraclinical features of pediatric multiple sclerosis (MS) in Turkey. METHODS: Data of MS patients with onset before age 18 years (n = 193) were collected from 27 pediatric neurology centers throughout Turkey. Earlier-onset (<12 years) and later-onset (≥12 years) groups were compared. RESULTS: There were 123 (63.7%) girls and 70 (36.3%) boys aged 4-17 years, median 14 years at disease onset. Family history of MS was 6...
June 29, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/28687643/cancer-incidence-attributable-to-lifestyle-and-environmental-factors-in-alberta-in-2012-summary-of-results
#18
Anne Grundy, Abbey E Poirier, Farah Khandwala, Xin Grevers, Christine M Friedenreich, Darren R Brenner
BACKGROUND: Estimates of the proportion of cancer cases that can be attributed to modifiable risk factors are not available for Canada and, more specifically, Alberta. The purpose of this study was to estimate the total proportion of cancer cases in Alberta in 2012 that could be attributed to a set of 24 modifiable lifestyle and environmental risk factors. METHODS: We estimated summary population attributable risk estimates for 24 risk factors (smoking [both passive and active], overweight and obesity, inadequate physical activity, diet [inadequate fruit and vegetable consumption, inadequate fibre intake, excess red and processed meat consumption, salt consumption, inadequate calcium and vitamin D intake], alcohol, hormones [oral contraceptives and hormone therapy], infections [Epstein-Barr virus, hepatitis B and C viruses, human papillomavirus, Helicobacter pylori], air pollution, natural and artificial ultraviolet radiation, radon and water disinfection by-products) by combining population attributable risk estimates for each of the 24 factors that had been previously estimated...
July 7, 2017: CMAJ Open
https://www.readbyqxmd.com/read/28686645/non-skeletal-health-effects-of-vitamin-d-supplementation-a-systematic-review-on-findings-from-meta-analyses-summarizing-trial-data
#19
Lars Rejnmark, Lise Sofie Bislev, Kevin D Cashman, Gudny Eiríksdottir, Martin Gaksch, Martin Grübler, Guri Grimnes, Vilmundur Gudnason, Paul Lips, Stefan Pilz, Natasja M van Schoor, Mairead Kiely, Rolf Jorde
BACKGROUND: A large number of observational studies have reported harmful effects of low 25-hydroxyvitamin D (25OHD) levels on non-skeletal outcomes. We performed a systematic quantitative review on characteristics of randomized clinical trials (RCTs) included in meta-analyses (MAs) on non-skeletal effects of vitamin D supplementation. METHODS AND FINDINGS: We identified systematic reviews (SR) reporting summary data in terms of MAs of RCTs on selected non-skeletal outcomes...
2017: PloS One
https://www.readbyqxmd.com/read/28686349/the-role-of-vitamin-d-on-circulating-memory-t-cells-in-children-the-generation-r-study
#20
Kirsten I M Looman, Michelle A E Jansen, Trudy Voortman, Diana van den Heuvel, Vincent W V Jaddoe, Oscar H Franco, Menno C van Zelm, Henriëtte A Moll
BACKGROUND: Previous studies have demonstrated that vitamin D affects T-cell function and maturation via the vitamin D receptor. However, no studies in children have been performed on this topic. Because most of the T-cell memory is formed in the first 5 years of life, we aimed to determine the association between serum 25-hydroxyvitamin D (25(OH)D) levels and numbers of circulatory naive, central memory (Tcm), and effector memory (Tem) T lymphocytes in a large population of healthy children...
July 7, 2017: Pediatric Allergy and Immunology
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