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Ma PF, Zhuo L, Yuan LP, Qi XH. Recent Advances in Vitamin D3 Intervention to Eradicate Helicobacter pylori Infection. J Multidiscip Healthc 2024; 17:825-832. [PMID: 38434485 PMCID: PMC10906669 DOI: 10.2147/jmdh.s454605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 02/13/2024] [Indexed: 03/05/2024] Open
Abstract
Helicobacter pylori (HP) infections affect approximately one-third of children worldwide. In China, the incidence of HP infection in children ranges from approximately 30% to 60%. In addition to damaging the gastrointestinal tract mucosa, HP infection in children can negatively affect their growth and development, hematology, respiratory and hepatobiliary system, skin, nutritional metabolism, and autoimmune system. However, the rate of HP eradication also fell considerably from the previous rate due to the presence of drug-resistant HP strains and the limited types of antibiotics that can be used in young patients. Vitamin D3 (VitD3) is a steroid hormone that can reduce inflammation in the stomach mucosa induced by HP and can alleviate and eradicate HP through a variety of pathways and mechanisms, including immune regulation and the stimulation of antimicrobial peptide (AMP) secretion and Ca2+ influx, to reestablish lysosomal acidification; thus, these results provide new strategies and ideas for the eradication of drug-resistant HP strains.
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Affiliation(s)
- Peng-Fei Ma
- Department of Gastroenterology, Children’s Hospital of Fudan University at Anhui (Anhui Provincial Children’s Hospital), Hefei, Anhui, People’s Republic of China
| | - Lin Zhuo
- Department of Gastroenterology, Children’s Hospital of Fudan University at Anhui (Anhui Provincial Children’s Hospital), Hefei, Anhui, People’s Republic of China
| | - Li-Ping Yuan
- Department of Pediatrics, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, People’s Republic of China
| | - Xiao-Hui Qi
- Department of Pediatrics, Children’s Hospital of Fudan University at Anhui (Anhui Provincial Children’s Hospital), Hefei, Anhui, People’s Republic of China
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Gao X, Feng J, Wei L, Dong P, Chen J, Zhang L, Yang Y, Xu L, Wang H, Luo J, Qin M. Defensins: A novel weapon against Mycobacterium tuberculosis? Int Immunopharmacol 2024; 127:111383. [PMID: 38118315 DOI: 10.1016/j.intimp.2023.111383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 12/04/2023] [Accepted: 12/12/2023] [Indexed: 12/22/2023]
Abstract
Tuberculosis (TB) is a serious airborne communicable disease caused by organisms of the Mycobacterium tuberculosis (Mtb) complex. Although the standard treatment antimicrobials, including isoniazid, rifampicin, pyrazinamide, and ethambutol, have made great progress in the treatment of TB, problems including the rising incidence of multidrug-resistant tuberculosis (MDR-TB) and extensively drug-resistant tuberculosis (XDR-TB), the severe toxicity and side effects of antimicrobials, and the low immunity of TB patients have become the bottlenecks of the current TB treatments. Therefore, both safe and effective new strategies to prevent and treat TB have become a top priority. As a subfamily of cationic antimicrobial peptides, defensins are rich in cysteine and play a vital role in resisting the invasion of microorganisms and regulating the immune response. Inspired by studies on the roles of defensins in host defence, we describe their research history and then review their structural features and antimicrobial mechanisms, specifically for fighting Mtb in detail. Finally, we discuss the clinical relevance, therapeutic potential, and potential challenges of defensins in anti-TB therapy. We further debate the possible solutions of the current application of defensins to provide new insights for eliminating Mtb.
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Affiliation(s)
- Xuehan Gao
- Department of Immunology, Center of Immunomolecular Engineering, Innovation & Practice Base for Graduate Students Education, Special Key Laboratory of Gene Detection & Therapy, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Jihong Feng
- Department of Oncology, The Sixth Affiliated Hospital of Wenzhou Medical University, Lishui People's Hospital, Lishui 323000, China
| | - Linna Wei
- Department of Immunology, Center of Immunomolecular Engineering, Innovation & Practice Base for Graduate Students Education, Special Key Laboratory of Gene Detection & Therapy, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Pinzhi Dong
- Department of Immunology, Center of Immunomolecular Engineering, Innovation & Practice Base for Graduate Students Education, Special Key Laboratory of Gene Detection & Therapy, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Jin Chen
- Department of Immunology, Center of Immunomolecular Engineering, Innovation & Practice Base for Graduate Students Education, Special Key Laboratory of Gene Detection & Therapy, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Langlang Zhang
- Department of Immunology, Center of Immunomolecular Engineering, Innovation & Practice Base for Graduate Students Education, Special Key Laboratory of Gene Detection & Therapy, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Yuhan Yang
- Department of Immunology, Center of Immunomolecular Engineering, Innovation & Practice Base for Graduate Students Education, Special Key Laboratory of Gene Detection & Therapy, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Lin Xu
- Department of Immunology, Center of Immunomolecular Engineering, Innovation & Practice Base for Graduate Students Education, Special Key Laboratory of Gene Detection & Therapy, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Haiyan Wang
- Department of Epidemiology and Health Statistics, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Junmin Luo
- Department of Immunology, Center of Immunomolecular Engineering, Innovation & Practice Base for Graduate Students Education, Special Key Laboratory of Gene Detection & Therapy, Zunyi Medical University, Zunyi, Guizhou 563000, China.
| | - Ming Qin
- Department of Immunology, Center of Immunomolecular Engineering, Innovation & Practice Base for Graduate Students Education, Special Key Laboratory of Gene Detection & Therapy, Zunyi Medical University, Zunyi, Guizhou 563000, China; Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China.
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Ahsan N, Imran M, Mohammed Y, Al Anouti F, Khan MI, Banerjee T, Adnan M, Ashfaq F, Kieliszek M, Ashraf SA, Haq A. Mechanistic Insight into the role of Vitamin D and Zinc in Modulating Immunity Against COVID-19: A View from an Immunological Standpoint. Biol Trace Elem Res 2023; 201:5546-5560. [PMID: 36890344 PMCID: PMC9995175 DOI: 10.1007/s12011-023-03620-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 03/01/2023] [Indexed: 03/10/2023]
Abstract
The pathophysiology of coronavirus disease-19 (COVID-19) is characterized by worsened inflammation because of weakened immunity, causing the infiltration of immune cells, followed by necrosis. Consequently, these pathophysiological changes may lead to a life-threatening decline in perfusion due to hyperplasia of the lungs, instigating severe pneumonia, and causing fatalities. Additionally, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection can cause mortality due to viral septic shock, resulting from unrestrained and backfiring immune reactions to the pathogen. Sepsis can cause premature organ failure in COVID-19 patients, as well. Notably, vitamin D and its derivatives and minerals, such as zinc and magnesium, have been reported to improve the immune system against respiratory illnesses. This comprehensive review aims to provide updated mechanistic details of vitamin D and zinc as immunomodulators. Additionally, this review also focuses on their role in respiratory illnesses, while specifically delineating the plausibility of employing them as a preventive and therapeutic agent against current and future pandemics from an immunological perspective. Furthermore, this comprehensive review will attract the attention of health professionals, nutritionists, pharmaceuticals, and scientific communities, as it encourages the use of such micronutrients for therapeutic purposes, as well as promoting their health benefits for a healthy lifestyle and wellbeing.
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Affiliation(s)
- Nuzhat Ahsan
- Quantum Biphotonics Division, Quantlase Laboratory LLC, Abu Dhabi, UAE
| | - Mohammad Imran
- Therapeutic Research Group, Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, 4102, Australia
| | - Yousuf Mohammed
- Therapeutic Research Group, Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, 4102, Australia
| | - Fatme Al Anouti
- College of Natural and Health Sciences, Zayed University, Abu Dhabi, UAE
| | - Mohammad Idreesh Khan
- Department of Clinical Nutrition, College of Applied Health Sciences in Ar Rass, Qassim University, Ar Rass, 51921, Saudi Arabia
| | - Tanushree Banerjee
- Infosys Ltd. SEZ Unit VI, Plot No. 1, Rajiv Gandhi Infotech Park, Hinjawadi Phase I, Pune, Maharashtra, 57, India
| | - Mohd Adnan
- Department of Biology, College of Science, University of Ha'il, P.O. Box 2440, Ha'il, Saudi Arabia
| | - Fauzia Ashfaq
- Department of Clinical Nutrition, College of Applied Medical Sciences, Jazan University, Jazan, 45142, Saudi Arabia
| | - Marek Kieliszek
- Department of Food Biotechnology and Microbiology, Institute of Food Sciences, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159 C, 02-776, Warsaw, Poland.
| | - Syed Amir Ashraf
- Department of Clinical Nutrition, College of Applied Medical Sciences, University of Ha'il, Ha'il, Saudi Arabia.
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Zhang C, Han Y, Miao L, Yue Z, Xu M, Liu K, Hou J. Human β-defensins are correlated with the immune infiltration and regulated by vitamin D 3 in periodontitis. J Periodontal Res 2023; 58:986-996. [PMID: 37439265 DOI: 10.1111/jre.13159] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 06/19/2023] [Accepted: 06/30/2023] [Indexed: 07/14/2023]
Abstract
OBJECTIVE Exploring the correlation between human β-defensins (HBDs) and immune infiltration in periodontitis, and whether it is regulated by vitamin D3 . BACKGROUND The human body produces essential antimicrobial peptides called HBDs, which are associated with periodontitis. There is a strong link between periodontal tissue destruction and the immune cell infiltration. Moreover, vitamin D3 has been reported to regulate the expression of immune cell chemokines. However, the relationship between vitamin D3 , HBDs, and immune infiltration in periodontitis remains to be investigated. METHODS The Gene Expression Omnibus database was accessed to obtain transcriptomic information of gingival samples taken from periodontitis patients. The expression value of HBD-2 and HBD-3 was calculated. Additionally, using the online program ImmuCellAl, 10 immune cells were scored for immune infiltration in the high-HBDs-expression group and the low-HBDs-expression group, separately. After that, transcriptome sequencing was done based on human gingival fibroblasts that had received vitamin D3 treatment. Furthermore, hGFs were treated by vitamin D3 , tumor necrosis factor-α (TNF-α), and Porphyromonas gingivalis lipopolysaccharide (Pg-LPS). The expressions of HBD-2, HBD-3, interleukin-8 (IL-8), and monocyte chemoattractant protein-1 (MCP-1) were detected. To seek the potential mechanism, CYP27A1 siRNA was employed to reduce the expression of CYP27A1, and nuclear factor-gene binding protein 65 (NF-κB p65) was examined. RESULTS In GSE10334, the expressions of HBD-2 and HBD-3 were down-regulated in periodontitis group. Meanwhile, monocyte, macrophage, and CD4_T cell were less infiltrated in low-HBD-2-expression group, while less Gamma-delta T-cell infiltration was found in low-HBD-3-expression group. Transcriptome sequencing found that 21 genes were significantly expressed, of which the function was enriched in response to bacterial origin and TNF signal pathway. Vitamin D3 could significantly up-regulate the expression of HBD-2 and HBD-3, which could be controlled by knocking down CYP27A1 mRNA expression. With prolonged vitamin D3 stimulation, the expression of HBD-2 and HBD-3 increased. TNF-α/Pg-LPS could significantly increase the expression of HBD-2, HBD-3, IL-8, MCP-1, and p65, all of which were reduced by vitamin D3 . CONCLUSION HBDs are correlated with immune infiltration in periodontitis. Vitamin D3 inhibits the expression of HBDs and chemokines induced by TNF-α/Pg-LPS, possibly through NF-κB pathway, in human gingival fibroblasts.
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Affiliation(s)
- Churen Zhang
- Department of Stomatology, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Ye Han
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, China
| | - Lili Miao
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, China
| | - Zhaoguo Yue
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, China
| | - Min Xu
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, China
| | - Kaining Liu
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, China
| | - Jianxia Hou
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, China
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Zihad SNK, Sifat N, Islam MA, Monjur-Al-Hossain A, Sikdar KYK, Sarker MMR, Shilpi JA, Uddin SJ. Role of pattern recognition receptors in sensing Mycobacterium tuberculosis. Heliyon 2023; 9:e20636. [PMID: 37842564 PMCID: PMC10570006 DOI: 10.1016/j.heliyon.2023.e20636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 09/06/2023] [Accepted: 10/03/2023] [Indexed: 10/17/2023] Open
Abstract
Mycobacterium tuberculosis is one of the major invasive intracellular pathogens causing most deaths by a single infectious agent. The interaction between host immune cells and this pathogen is the focal point of the disease, Tuberculosis. Host immune cells not only mount the protective action against this pathogen but also serve as the primary niche for growth. Thus, recognition of this pathogen by host immune cells and following signaling cascades are key dictators of the disease state. Immune cells, mainly belonging to myeloid cell lineage, recognize a wide variety of Mycobacterium tuberculosis ligands ranging from carbohydrate and lipids to proteins to nucleic acids by different membrane-bound and soluble pattern recognition receptors. Simultaneous interaction between different host receptors and pathogen ligands leads to immune-inflammatory response as well as contributes to virulence. This review summarizes the contribution of pattern recognition receptors of host immune cells in recognizing Mycobacterium tuberculosis and subsequent initiation of signaling pathways to provide the molecular insight of the specific Mtb ligands interacting with specific PRR, key adaptor molecules of the downstream signaling pathways and the resultant effector functions which will aid in identifying novel drug targets, and developing novel drugs and adjuvants.
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Affiliation(s)
| | - Nazifa Sifat
- Department of Pharmacy, ASA University of Bangladesh, Dhaka, 1207, Bangladesh
| | | | | | | | - Md Moklesur Rahman Sarker
- Department of Pharmacy, State University of Bangladesh, Dhaka, 1205, Bangladesh
- Department of Pharmacy, Gono University, Nolam, Mirzanagar, Savar, Dhaka 1344, Bangladesh
| | - Jamil A. Shilpi
- Pharmacy Discipline, Life Science School, Khulna University, Khulna, 9208, Bangladesh
| | - Shaikh Jamal Uddin
- Pharmacy Discipline, Life Science School, Khulna University, Khulna, 9208, Bangladesh
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Mingiano C, Picchioni T, Cavati G, Pirrotta F, Calabrese M, Nuti R, Gonnelli S, Fortini A, Frediani B, Gennari L, Merlotti D. Vitamin D Deficiency in COVID-19 Patients and Role of Calcifediol Supplementation. Nutrients 2023; 15:3392. [PMID: 37571329 PMCID: PMC10421093 DOI: 10.3390/nu15153392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/25/2023] [Accepted: 07/29/2023] [Indexed: 08/13/2023] Open
Abstract
Hypovitaminosis D has been associated with worse outcome in respiratory tract infections, with conflicting opinions regarding its role in Coronavirus-19 disease (COVID-19). Our study aimed to evaluate the possible relationship between 25-OH vitamin D (25OHD) values and the following conditions in patients hospitalized for COVID-19: prognosis, mortality, invasive (IV) and non-invasive (NIV) mechanical ventilation, and orotracheal intubation (OTI). A further objective was the analysis of a possible positive effect of supplementation with calcifediol on COVID-19 severity and prognosis. We analyzed 288 patients hospitalized at the San Giovanni di Dio Hospital in Florence and the Santa Maria alle Scotte Hospital in Siena, from November 2020 to February 2021. The 25OHD levels correlated positively with the partial pressure of oxygen and FiO2 (PaO2/FiO2) ratio (r = 0.17; p < 0.05). Furthermore, when we analyzed the patients according to the type of respiratory support, we found that 25OHD levels were markedly reduced in patients who underwent non-invasive ventilation and orotracheal intubation (OTI). The evaluation of the length of hospitalization in our population evidenced a longer duration of hospitalization in patients with severe 25OHD deficiency (<10 ng/mL). Moreover, we found a statistically significant difference in the mortality rate between patients who had 25OHD levels below 10 ng/mL and those with levels above this threshold in the total population (50.8% vs. 25.5%, p = 0.005), as well as between patients with 25OHD levels below 20 ng/mL and those with levels above that threshold (38.4% vs. 24.6%, p = 0.04). Moreover, COVID-19 patients supplemented with calcifediol presented a significantly reduced length of hospitalization (p < 0.05). Interestingly, when we analyzed the possible effects of calcifediol on mortality rate in patients with COVID-19, we found that the percentage of deaths was significantly higher in patients who did not receive any supplementation than in those who were treated with calcifediol (p < 0.05) In conclusion, we have demonstrated with our study the best prognosis of COVID-19 patients with adequate vitamin D levels and patients treated with calcifediol supplementation.
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Affiliation(s)
- Christian Mingiano
- Department of Medicine Surgery and Neuroscience, University of Siena, 53100 Siena, Italy; (C.M.); (G.C.); (F.P.); (M.C.); (R.N.); (S.G.); (B.F.); (L.G.)
| | - Tommaso Picchioni
- Internal Medicine Unit, Ospedale San Giovanni di Dio, 50143 Florence, Italy; (T.P.); (A.F.)
| | - Guido Cavati
- Department of Medicine Surgery and Neuroscience, University of Siena, 53100 Siena, Italy; (C.M.); (G.C.); (F.P.); (M.C.); (R.N.); (S.G.); (B.F.); (L.G.)
| | - Filippo Pirrotta
- Department of Medicine Surgery and Neuroscience, University of Siena, 53100 Siena, Italy; (C.M.); (G.C.); (F.P.); (M.C.); (R.N.); (S.G.); (B.F.); (L.G.)
| | - Marco Calabrese
- Department of Medicine Surgery and Neuroscience, University of Siena, 53100 Siena, Italy; (C.M.); (G.C.); (F.P.); (M.C.); (R.N.); (S.G.); (B.F.); (L.G.)
| | - Ranuccio Nuti
- Department of Medicine Surgery and Neuroscience, University of Siena, 53100 Siena, Italy; (C.M.); (G.C.); (F.P.); (M.C.); (R.N.); (S.G.); (B.F.); (L.G.)
| | - Stefano Gonnelli
- Department of Medicine Surgery and Neuroscience, University of Siena, 53100 Siena, Italy; (C.M.); (G.C.); (F.P.); (M.C.); (R.N.); (S.G.); (B.F.); (L.G.)
| | - Alberto Fortini
- Internal Medicine Unit, Ospedale San Giovanni di Dio, 50143 Florence, Italy; (T.P.); (A.F.)
| | - Bruno Frediani
- Department of Medicine Surgery and Neuroscience, University of Siena, 53100 Siena, Italy; (C.M.); (G.C.); (F.P.); (M.C.); (R.N.); (S.G.); (B.F.); (L.G.)
| | - Luigi Gennari
- Department of Medicine Surgery and Neuroscience, University of Siena, 53100 Siena, Italy; (C.M.); (G.C.); (F.P.); (M.C.); (R.N.); (S.G.); (B.F.); (L.G.)
| | - Daniela Merlotti
- Department of Medical Sciences, Azienda Ospedaliera Universitaria Senese, 53100 Siena, Italy
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Haussler MR, Haussler CA, Jurutka PW. Genomically anchored vitamin D receptor mediates an abundance of bioprotective actions elicited by its 1,25-dihydroxyvitamin D hormonal ligand. VITAMINS AND HORMONES 2023; 123:313-383. [PMID: 37717990 DOI: 10.1016/bs.vh.2022.12.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
The nuclear vitamin D receptor (VDR) mediates the actions of its physiologic 1,25-dihydroxyvitamin D3 (1,25D) ligand produced in kidney and at extrarenal sites during times of physiologic and cellular stress. The ligand-receptor complex transcriptionally controls genes encoding factors that regulate calcium and phosphate sensing/transport, bone remodeling, immune function, and nervous system maintenance. With the aid of parathyroid hormone (PTH) and fibroblast growth factor 23 (FGF23), 1,25D/VDR primarily participates in an intricate network of feedback controls that govern extracellular calcium and phosphate concentrations, mainly influencing bone formation and mineralization, ectopic calcification, and indirectly supporting many fundamental roles of calcium. Beyond endocrine and intracrine effects, 1,25D/VDR signaling impacts multiple biochemical phenomena that potentially affect human health and disease, including autophagy, carcinogenesis, cell growth/differentiation, detoxification, metabolic homeostasis, and oxidative stress mitigation. Several health advantages conferred by 1,25D/VDR appear to be promulgated by induction of klotho, an anti-aging renal peptide hormone which functions as a co-receptor for FGF23 and, like 1,25D, regulates nrf2, foxo, mTOR and other cellular protective pathways. Among hundreds of genes for which expression is modulated by 1,25D/VDR either primarily or secondarily in a cell-specific manner, the resulting gene products (in addition to those expressed in the classic skeletal mineral regulatory tissues kidney, intestine, and bone), fall into multiple biochemical categories including apoptosis, cholesterol homeostasis, glycolysis, hypoxia, inflammation, p53 signaling, unfolded protein response and xenobiotic metabolism. Thus, 1,25D/VDR is a bone mineral control instrument that also signals the maintenance of multiple cellular processes in the face of environmental and genetic challenges.
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Affiliation(s)
- Mark R Haussler
- Department of Basic Medical Sciences, University of Arizona College of Medicine, Phoenix, AZ, United States.
| | - Carol A Haussler
- Department of Basic Medical Sciences, University of Arizona College of Medicine, Phoenix, AZ, United States
| | - Peter W Jurutka
- School of Mathematical and Natural Sciences, Arizona State University, Glendale, AZ, United States
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Hashemian H, Shams SE, Salehi S, Dara N, Maroufizadeh S, HassanzadehRad A, Esfandiari MA, Dalili S. Is There a Correlation Between Vitamin D Levels and Acute Diarrhea in Children? ARCHIVES OF PEDIATRIC INFECTIOUS DISEASES 2023; 11. [DOI: 10.5812/pedinfect-135494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/08/2023] [Accepted: 04/13/2023] [Indexed: 09/13/2023]
Abstract
Background: Some studies have shown that low vitamin D is a risk factor for infectious diarrhea, but some have rejected it. Objectives: Considering the high prevalence of infectious diarrhea among children, the high prevalence of vitamin D deficiency, and the possible mutual effect of these two, the present study aimed to measure vitamin D in children with acute diarrhea. Methods: This study enrolled 222 children aged 2 - 14 in healthy control and acute diarrhea groups. The 25-hydroxyvitamin D (25(OH)D) level was measured in all samples by the Chemiluminescent Immunoassays (CLIA) method. Results: The mean age of the participants was 5 ± 2.7 years. Patients with acute diarrhea had lower vitamin D than healthy controls (P = 0.04). The frequency of deficient and insufficient vitamin D levels was higher in the acute diarrhea group than in the healthy control group, but insignificantly (P = 0.146). Conclusions: The present study revealed an association between insufficient vitamin D and acute diarrhea. Hence, low vitamin D is a risk factor for acute diarrhea.
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Macrophage Biology in Human Granulomatous Skin Inflammation. Int J Mol Sci 2023; 24:ijms24054624. [PMID: 36902053 PMCID: PMC10003716 DOI: 10.3390/ijms24054624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 02/15/2023] [Accepted: 02/22/2023] [Indexed: 03/04/2023] Open
Abstract
Cutaneous granulomatoses represent a heterogeneous group of diseases, which are defined by macrophage infiltration in the skin. Skin granuloma can be formed in the context of infectious and non-infectious conditions. Recent technological advances have deepened our understanding of the pathophysiology of granulomatous skin inflammation, and they provide novel insights into human tissue macrophage biology at the site of ongoing disease. Here, we discuss findings on macrophage immune function and metabolism derived from three prototypic cutaneous granulomatoses: granuloma annulare, sarcoidosis, and leprosy.
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10
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The Role of Bacteria-Mitochondria Communication in the Activation of Neuronal Innate Immunity: Implications to Parkinson's Disease. Int J Mol Sci 2023; 24:ijms24054339. [PMID: 36901773 PMCID: PMC10001700 DOI: 10.3390/ijms24054339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 02/13/2023] [Accepted: 02/15/2023] [Indexed: 02/24/2023] Open
Abstract
Mitochondria play a key role in regulating host metabolism, immunity and cellular homeostasis. Remarkably, these organelles are proposed to have evolved from an endosymbiotic association between an alphaproteobacterium and a primitive eukaryotic host cell or an archaeon. This crucial event determined that human cell mitochondria share some features with bacteria, namely cardiolipin, N-formyl peptides, mtDNA and transcription factor A, that can act as mitochondrial-derived damage-associated molecular patterns (DAMPs). The impact of extracellular bacteria on the host act largely through the modulation of mitochondrial activities, and often mitochondria are themselves immunogenic organelles that can trigger protective mechanisms through DAMPs mobilization. In this work, we demonstrate that mesencephalic neurons exposed to an environmental alphaproteobacterium activate innate immunity through toll-like receptor 4 and Nod-like receptor 3. Moreover, we show that mesencephalic neurons increase the expression and aggregation of alpha-synuclein that interacts with mitochondria, leading to their dysfunction. Mitochondrial dynamic alterations also affect mitophagy which favors a positive feedback loop on innate immunity signaling. Our results help to elucidate how bacteria and neuronal mitochondria interact and trigger neuronal damage and neuroinflammation and allow us to discuss the role of bacterial-derived pathogen-associated molecular patterns (PAMPs) in Parkinson's disease etiology.
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El-Mesidy MS, Abu Zeid OM, Rashed LA, Nawar MF, Abdelraheem HM. Topical calcipotriol in comparison with narrow band UVB phototherapy on tissue levels of active vitamin D (1,25 di-hydroxycholecalciferol) in psoriatic plaques. PHOTODERMATOLOGY, PHOTOIMMUNOLOGY & PHOTOMEDICINE 2023; 39:72-74. [PMID: 35557477 DOI: 10.1111/phpp.12806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 04/28/2022] [Accepted: 05/10/2022] [Indexed: 01/25/2023]
Affiliation(s)
| | | | - Laila Ahmed Rashed
- Biochemistry Department, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Maha Fouad Nawar
- Dermatology Department, Faculty of Medicine, Cairo University, Cairo, Egypt
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Al-Jaberi FAH, Crone CG, Lindenstrøm T, Arildsen NS, Lindeløv ES, Aagaard L, Gravesen E, Mortensen R, Andersen AB, Olgaard K, Hjaltelin JX, Brunak S, Bonefeld CM, Kongsbak-Wismann M, Geisler C. Reduced vitamin D-induced cathelicidin production and killing of Mycobacterium tuberculosis in macrophages from a patient with a non-functional vitamin D receptor: A case report. Front Immunol 2022; 13:1038960. [DOI: 10.3389/fimmu.2022.1038960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 10/18/2022] [Indexed: 11/06/2022] Open
Abstract
Tuberculosis (TB) presents a serious health problem with approximately a quarter of the world’s population infected with Mycobacterium tuberculosis (M. tuberculosis) in an asymptomatic latent state of which 5–10% develops active TB at some point in their lives. The antimicrobial protein cathelicidin has broad antimicrobial activity towards viruses and bacteria including M. tuberculosis. Vitamin D increases the expression of cathelicidin in many cell types including macrophages, and it has been suggested that the vitamin D-mediated antimicrobial activity against M. tuberculosis is dependent on the induction of cathelicidin. However, unraveling the immunoregulatory effects of vitamin D in humans is hampered by the lack of suitable experimental models. We have previously described a family in which members suffer from hereditary vitamin D-resistant rickets (HVDRR). The family carry a mutation in the DNA-binding domain of the vitamin D receptor (VDR). This mutation leads to a non-functional VDR, meaning that vitamin D cannot exert its effect in family members homozygous for the mutation. Studies of HVDRR patients open unique possibilities to gain insight in the immunoregulatory roles of vitamin D in humans. Here we describe the impaired ability of macrophages to produce cathelicidin in a HVDRR patient, who in her adolescence suffered from extrapulmonary TB. The present case is a rare experiment of nature, which illustrates the importance of vitamin D in the pathophysiology of combating M. tuberculosis.
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The ratio of serum LL-37 levels to blood leucocyte count correlates with COVID-19 severity. Sci Rep 2022; 12:9447. [PMID: 35676519 PMCID: PMC9175165 DOI: 10.1038/s41598-022-13260-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 05/23/2022] [Indexed: 01/08/2023] Open
Abstract
AbstractBeneficial effects of vitamin D on COVID-19 progression have been discussed in several studies. Vitamin D stimulates the expression of the antimicrobial peptide LL-37, and evidence shows that LL-37 can antagonize SARS-CoV-2. Therefore, we investigated the association between LL-37 and vitamin D serum levels and the severity of COVID-19. To this end, 78 COVID-19 patients were divided into 5 groups according to disease severity. We determined serum levels of LL-37, vitamin D, and routine laboratory parameters. We demonstrated a correlation of CRP, IL-6, PCT, leukocyte count, and LDH with the severity of COVID-19. Our study did not demonstrate a direct relationship between serum levels of LL-37 and vitamin D and the severity of COVID-19. LL-37 is produced by granulocytes and released at the site of inflammation. Therefore, the analysis of LL-37 in broncho-alvelolar lavage rather than in patient serum seems critical. However, since LL-37 is produced by granulocytes, we determined serum LL-37 levels as a function of leukocyte count. The LL-37/leukocyte count ratio correlates highly significantly inversely proportional with COVID-19 severity. Our results indicate that the LL-37/leukocyte count ratio could be used to assess the risk of COVID-19 progression as early as hospital admission.
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Sekhar Miraj S, Vyas N, Kurian SJ, Baral T, Thomas L, Reddy BS, Munisamy M, Banerjee M, Rao M. Vitamin D receptor gene polymorphism and vitamin D supplementation on clinical/ treatment outcome in tuberculosis: current and future perspectives. Expert Rev Anti Infect Ther 2022; 20:1179-1186. [PMID: 35608034 DOI: 10.1080/14787210.2022.2081546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Tuberculosis (TB) is a transnational public health concern, which requires more precise treatment strategies than the existing approaches. Vitamin D modulates the inflammatory and immune response to the disease. Robust evidence shows that vitamin D deficiency and its receptor gene polymorphism influence the susceptibility to TB and the outcome of the anti-tubercular treatment (ATT). However, in the different populations, these findings were inconsistent and even contradictory. AREAS COVERED The current review focuses on the association between vitamin D receptor (VDR) gene polymorphism with the risk of development of TB disease and response to the ATT. Additionally, it reviews various systematic reviews and meta-analyses on the impact of vitamin D supplements on both clinical and treatment outcomes in TB patients. EXPERT OPINION Although the majority of the findings rule out the benefits of the supplementation, sufficient evidence is available to warrant larger epidemiological research that should be aimed to generate possible interaction among the VDR polymorphism, vitamin D status, and the outcome in TB. We conclude that establishing such an association in different ethnic populations will help design nutrigenomics- or pharmacogenomics-based vitamin D supplementation to develop a personalized medicine approach to flatten the curve of TB disease.
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Affiliation(s)
- Sonal Sekhar Miraj
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India.,Manipal Center for Infectious Diseases, Prasanna School of Public Health, Manipal Academy of Higher Education, Manipal, India
| | - Navya Vyas
- Manipal Center for Infectious Diseases, Prasanna School of Public Health, Manipal Academy of Higher Education, Manipal, India.,Department of Health Policy, Prasanna School of Public Health, Manipal Academy of Higher Education, Manipal, India
| | - Shilia Jacob Kurian
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India.,Manipal Center for Infectious Diseases, Prasanna School of Public Health, Manipal Academy of Higher Education, Manipal, India
| | - Tejaswini Baral
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Levin Thomas
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - B Shrikar Reddy
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Murali Munisamy
- Department of Translational Medicine, All India Institute of Medical Sciences, Bhopal, India
| | - Mithu Banerjee
- Department of Biochemistry, All India Institute of Medical Sciences, Jodhpur, India
| | - Mahadev Rao
- Department of Pharmacy Practice, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
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15
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Goyal JP, Singh S, Bishnoi R, Bhardwaj P, Kaur RJ, Dhingra S, Yadav D, Dutta S, Charan J. Efficacy and safety of vitamin D in tuberculosis patients: a systematic review and meta-analysis. Expert Rev Anti Infect Ther 2022; 20:1049-1059. [PMID: 35477334 DOI: 10.1080/14787210.2022.2071702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Evidence from the basic research and epidemiological studies indicates a beneficial effect of vitamin D in the treatment of tuberculosis (TB). However, the evidence from randomized controlled trials (RCTs) is inconsistent. OBJECTIVES This systematic review and meta-analysis was performed to synthesize evidence regarding role of vitamin D versus placebo for the management of TB. MATERIALS AND METHODS We searched PubMed and Cochrane Clinical Trial Registry for RCTs comparing vitamin D versus placebo for the treatment of TB. RCTs enrolling adult patients with TB receiving vitamin D in addition to standard treatment were included. Data were pooled using random effects model. The study was conducted according to PRISMA guidelines and protocol was registered with PROSPERO (CRD42016052841). RESULTS Of 605 identified references, 12 RCTs were included. The overall risk of bias in included studies was low or unclear. There was no significant difference between vitamin D and placebo group for any outcomes of efficacy (time to culture conversion, time to smear conversion, rate of culture conversion, and rate of smear conversion) or safety (mortality, serious adverse events, and nonserious adverse events). CONCLUSION Vitamin D administered with standard treatment has no beneficial effect in the TB patients as compared to the placebo.
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Affiliation(s)
- Jagdish Prasad Goyal
- Department of Pediatrics, All India Institute of Medical Science, Jodhpur, India
| | - Surjit Singh
- Department of Pharmacology, All India Institute of Medical Sciences, Jodhpur, India
| | | | - Pankaj Bhardwaj
- Department of Community and Family Medicine, All India Institute of Medical Sciences, Jodhpur, India
| | - Rimple Jeet Kaur
- Department of Pharmacology, All India Institute of Medical Sciences, Jodhpur, India
| | - Sameer Dhingra
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research (NIPER), Hajipur, India
| | - Dharmveer Yadav
- Department of Biochemistry, All India Institute of Medical Science, Jodhpur, India
| | - Siddhartha Dutta
- Department of Pharmacology, All India Institute of Medical Sciences, Rajkot, India
| | - Jaykaran Charan
- Department of Pharmacology, All India Institute of Medical Sciences, Jodhpur, India
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16
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Mishra P, Verma VK, Barman L, Sharma J, Gupta P, Mohan A, Arya DS. Correlation of serum amyloid A1 and interleukin-1beta in response to anti-tubercular therapy. Am J Med Sci 2022; 364:316-326. [PMID: 35452629 DOI: 10.1016/j.amjms.2021.12.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 08/28/2021] [Accepted: 12/07/2021] [Indexed: 11/19/2022]
Abstract
BACKGROUND Host biomarkers are needed to monitor the response to anti-tubercular therapy (ATT) for ensuring effective therapy and preventing drug-resistant tuberculosis. We sought to find the correlation between the serum levels of SAA1 and IL-1beta in response to ATT in adult patients with pulmonary TB (PTB) or extra-pulmonary TB (EPTB). METHODS Blood samples of 32 patients with PTB and 28 patients with EPTB were analyzed. The blood samples were collected at baseline, two months and six months following treatment initiation. SAA1 and IL-1beta levels were measured by enzyme linked immunosorbent assay (ELISA). RESULTS In the PTB group, the mean levels of SAA1 decreased significantly (p <0.001) after the intensive phase (two months) and continuous phase (six months) of ATT in comparison with the baseline value. IL-1beta values also decreased significantly (p = 0.005) after the intensive phase (two months) compared with the baseline values. In the EPTB group, there was a significant reduction in the mean serum level of SAA1 (p <0.001) and IL-1beta (p = 0.001) after the intensive phase (two months) in comparison with the baseline value, whereas the reduction at six months was not significant. CONCLUSIONS SAA1 and IL-1beta may be useful potential treatment-monitoring biomarkers, especially in the intensive phase of therapy for both PTB and EPTB.
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Affiliation(s)
- Prashant Mishra
- Department of Pharmacology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Vipin Kumar Verma
- Department of Pharmacology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Lina Barman
- Department of Pharmacology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Jatin Sharma
- Department of Pharmacology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Pooja Gupta
- Department of Pharmacology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Anant Mohan
- Department of Pulmonary Medicine and Sleep Disorders, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Dharamvir Singh Arya
- Department of Pharmacology, All India Institute of Medical Sciences, New Delhi 110029, India.
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CRISPR Interference Reveals That All- Trans-Retinoic Acid Promotes Macrophage Control of Mycobacterium tuberculosis by Limiting Bacterial Access to Cholesterol and Propionyl Coenzyme A. mBio 2022; 13:e0368321. [PMID: 35038923 PMCID: PMC8764544 DOI: 10.1128/mbio.03683-21] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Macrophages are a protective replicative niche for Mycobacterium tuberculosis (Mtb) but can kill the infecting bacterium when appropriately activated. To identify mechanisms of clearance, we compared levels of bacterial restriction by human macrophages after treatment with 26 compounds, including some currently in clinical trials for tuberculosis. All-trans-retinoic acid (ATRA), an active metabolite of vitamin A, drove the greatest increase in Mtb control. Bacterial clearance was transcriptionally and functionally associated with changes in macrophage cholesterol trafficking and lipid metabolism. To determine how these macrophage changes affected bacterial control, we performed the first Mtb CRISPR interference screen in an infection model, identifying Mtb genes specifically required to survive in ATRA-activated macrophages. These data showed that ATRA treatment starves Mtb of cholesterol and the downstream metabolite propionyl coenzyme A (propionyl-CoA). Supplementation with sources of propionyl-CoA, including cholesterol, abrogated the restrictive effect of ATRA. This work demonstrates that targeting the coupled metabolism of Mtb and the macrophage improves control of infection and that it is possible to genetically map the mode of bacterial death using CRISPR interference. IMPORTANCE Tuberculosis, caused by the bacterium Mycobacterium tuberculosis, is a leading cause of death due to infectious disease. Improving the immune response to tuberculosis holds promise for fighting the disease but is limited by our lack of knowledge as to how the immune system kills M. tuberculosis. Our research identifies a potent way to make relevant immune cells more effective at fighting M. tuberculosis and then uses paired human and bacterial genomic methods to determine the mechanism of that improved bacterial clearance.
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Sakalyte R, Denkovskij J, Bernotiene E, Stropuviene S, Mikulenaite SO, Kvederas G, Porvaneckas N, Tutkus V, Venalis A, Butrimiene I. The Expression of Inflammasomes NLRP1 and NLRP3, Toll-Like Receptors, and Vitamin D Receptor in Synovial Fibroblasts From Patients With Different Types of Knee Arthritis. Front Immunol 2022; 12:767512. [PMID: 35126351 PMCID: PMC8807559 DOI: 10.3389/fimmu.2021.767512] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 12/22/2021] [Indexed: 12/27/2022] Open
Abstract
Activated rheumatoid arthritis (RA) synovial fibroblasts (SFs) are among the most important cells promoting RA pathogenesis. They are considered active contributors to the initiation, progression, and perpetuation of the disease; therefore, early detection of RASF activation could advance contemporary diagnosis and adequate treatment of undifferentiated early inflammatory arthritis (EA). In this study, we investigated the expression of nucleotide-binding, oligomerization domain (NOD)-like receptor family, pyrin domain containing (NLRP)1, NLRP3 inflammasomes, Toll-like receptor (TLR)1, TLR2, TLR4, vitamin D receptor (VDR), and secretion of matrix metalloproteinases (MMPs) in SFs isolated from patients with RA, osteoarthritis (OA), EA, and control individuals (CN) after knee surgical intervention. C-reactive protein, general blood test, anticyclic citrullinated peptide (anti-CCP), rheumatoid factor (RF), and vitamin D (vitD) in patients’ sera were performed. Cells were stimulated or not with 100 ng/ml tumor necrosis factor alpha (TNF-α) or/and 1 nM or/and 0.01 nM vitamin D3 for 72 h. The expression levels of NLRP1, NLRP3, TLR1, TLR2, TLR4, and VDR in all examined SFs were analyzed by quantitative real-time PCR (RT-qPCR). Additionally, the secretion of IL-1β by SFs and MMPs were determined by ELISA and Luminex technology. The expression of NLRP3 was correlated with the levels of CRP, RF, and anti-CCP, suggesting its implication in SF inflammatory activation. In the TNF-α-stimulated SFs, a significantly lower expression of NLRP3 and TLR4 was observed in the RA group, compared with the other tested forms of arthritis. Moreover, upregulation of NLRP3 expression by TNF-α alone or in combination with vitD3 was observed, further indicating involvement of NLRP3 in the inflammatory responses of SFs. Secretion of IL-1β was not detected in any sample, while TNF-α upregulated the levels of secreted MMP-1, MMP-7, MMP-8, MMP-12, and MMP-13 in all patient groups. Attenuating effects of vitD on the expression of NLRP3, TLR1, and TLR4 suggest potential protective effects of vitD on the inflammatory responses in SFs. However, longer studies may be needed to confirm or fully rule out the potential implication of vitD in SF activation in inflammatory arthritis. Both VDR and NLRP3 in the TNF-α-stimulated SFs negatively correlated with the age of patients, suggesting potential age-related changes in the local inflammatory responses.
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Affiliation(s)
- Regina Sakalyte
- The Clinic of Rheumatology, Traumatology Orthopaedics and Reconstructive Surgery, Institute of Clinical Medicine of the Faculty of Vilnius University, Vilnius, Lithuania
- State Research Institute Centre for Innovative Medicine, Department of Experimental, Preventative and Clinic Medicine, Vilnius, Lithuania
- *Correspondence: Regina Sakalyte,
| | - Jaroslav Denkovskij
- State Research Institute Centre for Innovative Medicine, Department of Regenerative Medicine, Vilnius, Lithuania
| | - Eiva Bernotiene
- State Research Institute Centre for Innovative Medicine, Department of Regenerative Medicine, Vilnius, Lithuania
- Department of Chemistry and Bioengineering, The Faculty of Fundamental Sciences, Vilnius Gediminas Technical University, Vilnius Tech, Vilnius, Lithuania
| | - Sigita Stropuviene
- The Clinic of Rheumatology, Traumatology Orthopaedics and Reconstructive Surgery, Institute of Clinical Medicine of the Faculty of Vilnius University, Vilnius, Lithuania
- State Research Institute Centre for Innovative Medicine, Department of Experimental, Preventative and Clinic Medicine, Vilnius, Lithuania
| | - Silvija Ona Mikulenaite
- State Research Institute Centre for Innovative Medicine, Department of Regenerative Medicine, Vilnius, Lithuania
| | - Giedrius Kvederas
- The Clinic of Rheumatology, Traumatology Orthopaedics and Reconstructive Surgery, Institute of Clinical Medicine of the Faculty of Vilnius University, Vilnius, Lithuania
| | - Narunas Porvaneckas
- The Clinic of Rheumatology, Traumatology Orthopaedics and Reconstructive Surgery, Institute of Clinical Medicine of the Faculty of Vilnius University, Vilnius, Lithuania
| | - Vytautas Tutkus
- Department of Anatomy, Histology and Anthropology, Institute of Biomedical Sciences, Faculty of Medicine, Vilnius University, Vilnius, Lithuania
| | - Algirdas Venalis
- The Clinic of Rheumatology, Traumatology Orthopaedics and Reconstructive Surgery, Institute of Clinical Medicine of the Faculty of Vilnius University, Vilnius, Lithuania
- State Research Institute Centre for Innovative Medicine, Department of Experimental, Preventative and Clinic Medicine, Vilnius, Lithuania
| | - Irena Butrimiene
- The Clinic of Rheumatology, Traumatology Orthopaedics and Reconstructive Surgery, Institute of Clinical Medicine of the Faculty of Vilnius University, Vilnius, Lithuania
- State Research Institute Centre for Innovative Medicine, Department of Experimental, Preventative and Clinic Medicine, Vilnius, Lithuania
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Raghavan PR. Metadichol®: A Novel Nanolipid Formulation That Inhibits SARS-CoV-2 and a Multitude of Pathological Viruses In Vitro. BIOMED RESEARCH INTERNATIONAL 2022; 2022:1558860. [PMID: 35039793 PMCID: PMC8760534 DOI: 10.1155/2022/1558860] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 10/20/2021] [Accepted: 12/15/2021] [Indexed: 01/08/2023]
Abstract
Increasing outbreaks of new pathogenic viruses have promoted the exploration of novel alternatives to time-consuming vaccines. Thus, it is necessary to develop a universal approach to halt the spread of new and unknown viruses as they are discovered. One such promising approach is to target lipid membranes, which are common to all viruses and bacteria. The ongoing severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has reaffirmed the importance of interactions between the virus envelope and the host cell plasma membrane as a critical mechanism of infection. Metadichol®, a nanolipid emulsion of long-chain alcohols, has been demonstrated as a strong candidate that inhibits the proliferation of SARS-CoV-2. Naturally derived substances, such as long-chain saturated lipid alcohols, reduce viral infectivity, including that of coronaviruses (such as SARS-CoV-2) by modifying their lipid-dependent attachment mechanism to human host cells. The receptor ACE2 mediates the entry of SARS-CoV-2 into the host cells, whereas the serine protease TMPRSS2 primes the viral S protein. In this study, Metadichol® was found to be 270 times more potent an inhibitor of TMPRSS2 (EC50 = 96 ng/mL) than camostat mesylate (EC50 = 26000 ng/mL). Additionally, it inhibits ACE with an EC50 of 71 ng/mL, but it is a very weak inhibitor of ACE2 at an EC50 of 31 μg/mL. Furthermore, the live viral assay performed in Caco-2 cells revealed that Metadichol® inhibits SARS-CoV-2 replication at an EC90 of 0.16 μg/mL. Moreover, Metadichol® had an EC90 of 0.00037 μM, making it 2081 and 3371 times more potent than remdesivir (EC50 = 0.77 μM) and chloroquine (EC50 = 1.14 μM), respectively.
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Pagnini C, Di Paolo MC, Graziani MG, Delle Fave G. Probiotics and Vitamin D/Vitamin D Receptor Pathway Interaction: Potential Therapeutic Implications in Inflammatory Bowel Disease. Front Pharmacol 2021; 12:747856. [PMID: 34899302 PMCID: PMC8657408 DOI: 10.3389/fphar.2021.747856] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 10/20/2021] [Indexed: 12/12/2022] Open
Abstract
Inflammatory bowel diseases (IBD) are chronic conditions of unknown etiology and immunomediated pathogenesis. In the last years, the comprehension of the complex mechanisms involved in the intestinal mucosal homeostasis, and the analysis of the alterations potentially leading to inflammatory pathologic states, has consistently increased. Specifically, the extraordinary impulse in the field of research of the intestinal microbiome has opened the door to the investigation of possible novel approaches to the diagnosis, management and therapeutic applications in IBD. In line with that, administration of probiotic bacteria has been intensely evaluated, leading to much more exciting results in experimental models than in clinical practice. Considering the consistent heterogeneity of the available studies on probiotics, the increased knowledge of the properties of the single bacterial species would ideally lead to unravel potential mechanisms of action that may bring therapeutic applications in specific pathologic condition. Among the relevant molecular pathways for mucosal homeostasis maintenance, the vitamin D/vitamin D receptor (VDR) pathway has been intensely studied in the very last years. In fact, besides osteometabolic functions, the vitamin D exerts important homeostatic effects in the organism at multiple levels, such as immunomodulation, inflammation control, and microbiota regulation, which are likely to play a relevant role in intestinal mucosa protection. In the present review, recent findings about probiotic applications in IBD and mechanisms of action linking vitamin D/VDR pathway to IBD are reported. Available evidence for probiotic effect on vitamin D/VDR are reviewed and potential future application in IBD patients are discussed. At present, many aspects of IBD pathogenesis are still obscure, and current therapeutic options for IBD treatment are at best suboptimal. The increasing comprehension of the different pathways involved in IBD pathogenesis will lead to novel findings ideally leading to potential clinical applications. Microbiota manipulation and vitamin/VDR pathway appear a promising field for future research and therapeutic developments.
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Affiliation(s)
- Cristiano Pagnini
- Gastroenterologia ed Endoscopia Digestiva, AO S. Giovanni Addolorata, Rome, Italy
| | - Maria Carla Di Paolo
- Gastroenterologia ed Endoscopia Digestiva, AO S. Giovanni Addolorata, Rome, Italy
| | | | - Gianfranco Delle Fave
- Gastroenterologia, Università "Sapienza", Rome, Italy.,Onlus "S. Andrea", Rome, Italy
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21
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Bouillon R, Quesada‐Gomez JM. Vitamin D Endocrine System and COVID-19. JBMR Plus 2021; 5:e10576. [PMID: 34950831 PMCID: PMC8674769 DOI: 10.1002/jbm4.10576] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 10/25/2021] [Accepted: 10/31/2021] [Indexed: 12/19/2022] Open
Abstract
Preclinical data strongly suggest that the vitamin D endocrine system (VDES) may have extraskeletal effects. Cells of the immune and cardiovascular systems and lungs can express the vitamin D receptor, and overall these cells respond in a coherent fashion when exposed to 1,25-dihydroxyvitamin D, the main metabolite of the VDES. Supplementation of vitamin D-deficient subjects may decrease the risk of upper respiratory infections. The VDES also has broad anti-inflammatory and anti-thrombotic effects, and other mechanisms argue for a potential beneficial effect of a good vitamin D status on acute respiratory distress syndrome, a major complication of this SARS-2/COVID-19 infection. Activation of the VDES may thus have beneficial effects on the severity of COVID-19. Meta-analysis of observational data show that a better vitamin D status decreased the requirement of intensive care treatment or decreased mortality. A pilot study in Cordoba indicated that admission to intensive care was drastically reduced by administration of a high dose of calcifediol early after hospital admission for COVID-19. A large observational study in Barcelona confirmed that such therapy significantly decreased the odds ratio (OR) of mortality (OR = 0.52). This was also the conclusion of a retrospective study in five hospitals of Southern Spain. A retrospective study on all Andalusian patients hospitalized because of COVID-19, based on real-world data from the health care system, concluded that prescription of calcifediol (hazard ratio [HR] = 0.67) or vitamin D (HR = 0.75), 15 days before hospital admission decreased mortality within the first month. In conclusion, a good vitamin D status may have beneficial effects on the course of COVID-19. This needs to be confirmed by large, randomized trials, but in the meantime, we recommend (rapid) correction of 25 hydroxyvitamin D (25OHD) deficiency in subjects exposed to this coronavirus. © 2021 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Roger Bouillon
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and AgeingKU LeuvenLeuvenBelgium
| | - José Manuel Quesada‐Gomez
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Hospital Universitario Reina SofíaUniversidad de Córdoba, Fundación Progreso y SaludCórdobaSpain
- CIBER de Fragilidad y Envejecimiento Saludable (CIBERFES)MadridSpain
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22
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Xu S, Xie X, Jiao L, Bai H, Wu X, Ying J, Ying B. Association analysis of pulmonary tuberculosis and vitamin D Receptor Gene Polymorphisms of Han population in Western China. Microb Pathog 2021; 161:105190. [PMID: 34619312 DOI: 10.1016/j.micpath.2021.105190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 08/14/2020] [Accepted: 09/09/2021] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To investigate the associations between single nucleotide polymorphism (SNP) of vitamin D receptor (VDR) gene and tuberculosis (TB) infection risk. METHODS 597 newly diagnosed pulmonary tuberculosis (PTB) patients from the Han population in Western China were randomly selected while 901 healthy subjects were divided into control group from September 2015 to September 2018. In the case-control study, 21 SNPs within the VDR gene were genotyped. Use SPSS 19.0 statistical software, SNP statistical software (Plink) and Pub-med network database to analyze the correlation between VDR SNP and PTB susceptibility. RESULTS The 14 SNPs of VDR gene screened in the experiment were consistent with the frequency of PTB-related and minor alleles> 5% in HapMap Asian population. Three SNPs (rs58379944, rs11574012, rs12581281) were correlated with PTB by x2 analysis. The rs58379944, rs11574012 alleles "G" and rs12581281 alleles "A" in genotype analysis were susceptible to tuberculosis. In the genotype analysis, allele "G" of rs58379944 and rs11574012 and allele "A" of rs12581281 provided protection against PTB infection. CONCLUSION rs58379944, rs12581281 and rs11574012 allelic variants in VDR gene were found to be closely associated with PTB infection in the Han population in Western China. The protection it achieved may be one of the reasons for reducing the infection rate.
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Affiliation(s)
- Shaohua Xu
- West China School of Medicine, Sichuan University /West China Hospital, Sichuan University, Chengdu, 610041, PR China; Santai People's Hospital, Mianyang, 621100, PR China
| | - Xiaoxia Xie
- Santai People's Hospital, Mianyang, 621100, PR China
| | - Lin Jiao
- West China School of Medicine, Sichuan University /West China Hospital, Sichuan University, Chengdu, 610041, PR China
| | - Hao Bai
- West China School of Medicine, Sichuan University /West China Hospital, Sichuan University, Chengdu, 610041, PR China
| | - Xi Wu
- West China School of Medicine, Sichuan University /West China Hospital, Sichuan University, Chengdu, 610041, PR China
| | - Jun Ying
- Santai People's Hospital, Mianyang, 621100, PR China.
| | - Binwu Ying
- West China School of Medicine, Sichuan University /West China Hospital, Sichuan University, Chengdu, 610041, PR China.
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23
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Vaghari-Tabari M, Mohammadzadeh I, Qujeq D, Majidinia M, Alemi F, Younesi S, Mahmoodpoor A, Maleki M, Yousefi B, Asemi Z. Vitamin D in respiratory viral infections: a key immune modulator? Crit Rev Food Sci Nutr 2021; 63:2231-2246. [PMID: 34470511 DOI: 10.1080/10408398.2021.1972407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Respiratory viral infections are common respiratory diseases. Influenza viruses, RSV and SARS-COV2 have the potential to cause severe respiratory infections. Numerous studies have shown that unregulated immune response to these viruses can cause excessive inflammation and tissue damage. Therefore, regulating the antiviral immune response in the respiratory tract is of importance. In this regard, recent years studies have emphasized the importance of vitamin D in respiratory viral infections. Although, the most well-known role of vitamin D is to regulate the metabolism of phosphorus and calcium, it has been shown that this vitamin has other important functions. One of these functions is immune regulation. Vitamin D can regulate the antiviral immune response in the respiratory tract in order to provide an effective defense against respiratory viral infections and prevention from excessive inflammatory response and tissue damage. In addition, this vitamin has preventive effects against respiratory viral infections. Some studies during the COVID-19 pandemic have shown that vitamin D deficiency may be associated with a higher risk of mortality and sever disease in patients with COVID-19. Since, more attention has recently been focused on vitamin D. In this article, after a brief overview of the antiviral immune response in the respiratory system, we will review the role of vitamin D in regulating the antiviral immune response comprehensively. Then we will discuss the importance of this vitamin in influenza, RSV, and COVID-19.
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Affiliation(s)
- Mostafa Vaghari-Tabari
- Department of Clinical Biochemistry and Laboratory Medicine, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Iraj Mohammadzadeh
- Non-Communicable Pediatric Diseases Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | - Durdi Qujeq
- Department of Clinical Biochemistry, Babol University of Medical Sciences, Babol, Iran.,Cellular and Molecular Biology Research Center (CMBRC), Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | - Maryam Majidinia
- Solid Tumor Research Center, Urmia University of Medical Sciences, Urmia, Iran
| | - Forough Alemi
- Department of Clinical Biochemistry and Laboratory Medicine, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Simin Younesi
- Schoole of Health and Biomedical Sciences, RMIT University, Melborne, VIC, Australia
| | - Ata Mahmoodpoor
- Department of Anesthesiology and Intensive Care, School of Medicine, Tabriz University of Medical Science and Health Services, Tabriz, Iran
| | - Masomeh Maleki
- Department of Clinical Biochemistry and Laboratory Medicine, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Bahman Yousefi
- Department of Clinical Biochemistry and Laboratory Medicine, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zatollah Asemi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
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24
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Martori C, Velez R, Gállego M, Mesa I, Ferreira R, Alberola J, Rodríguez-Cortés A. Vitamin d and leishmaniasis: Neither seasonal nor risk factor in canine host but potential adjuvant treatment through cbd103 expression. PLoS Negl Trop Dis 2021; 15:e0009681. [PMID: 34398874 PMCID: PMC8389843 DOI: 10.1371/journal.pntd.0009681] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 08/26/2021] [Accepted: 07/26/2021] [Indexed: 11/18/2022] Open
Abstract
Vitamin D (VitD) deficiency has been shown to be a risk factor for a plethora of disorders. We have shown that dogs with clinical leishmaniasis presented lower VitD serum levels than non-infected dogs, and even lower than those with asymptomatic infection. However, if VitD deficiency is a risk factor to develop clinical leishmaniasis remains to be answered. It is also unknown if VitD participates in Leishmania control. First, we retrospectively analysed VitD concentration in serum samples from 36 healthy dogs collected in different periods of the year concluding that there isn't a seasonal variation of this vitamin in dogs. We also included 9 dogs with clinical leishmaniasis and 10 non-infected healthy dogs, in which we measured VitD levels at the beginning of the study, when all dogs were negative for serology and qPCR, and 1 year later. Whereas non-infected dogs showed no change in VitD levels along the study, those developing clinical leishmaniasis showed a significant VitD reduction at the end of the study (35%). When we compared VitD concentration between the two groups at the beginning of the study, no differences were detected (43.6 (38-59) ng/mL, P = 0.962). Furthermore, an in vitro model using a canine macrophage cell line proved that adding active VitD leads to a significant reduction in L. infantum load (31.4%). Analyzing expression of genes related to VitD pathway on primary canine monocytes, we showed that CBD103 expression was significantly enhanced after 1,25(OH)2D addition. Our results show that VitD concentration is neither seasonal nor a risk factor for developing canine leishmaniasis, but it diminishes with the onset of clinical disease suggesting a role in parasitic control. Our in vitro results corroborate this hypothesis and point out that VitD regulates infection through CBD103 expression. These results open the possibility for studies testing VitD as an adjuvant in leishmaniasis therapy.
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Affiliation(s)
- Clara Martori
- Departament de Farmacologia, Terapèutica i, Toxicologia, Facultat de Veterinaria, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Rita Velez
- Secció de Parasitología, Departament de Biologia, Sanitat i Mediambient, Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona, Barcelona, Spain.,Instituto de Salud Global de Barcelona (ISGlobal), Barcelona, Spain
| | - Montserrat Gállego
- Secció de Parasitología, Departament de Biologia, Sanitat i Mediambient, Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona, Barcelona, Spain.,Instituto de Salud Global de Barcelona (ISGlobal), Barcelona, Spain
| | | | | | - Jordi Alberola
- Departament de Farmacologia, Terapèutica i, Toxicologia, Facultat de Veterinaria, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Alhelí Rodríguez-Cortés
- Departament de Farmacologia, Terapèutica i, Toxicologia, Facultat de Veterinaria, Universitat Autònoma de Barcelona, Bellaterra, Spain
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25
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Robak O, Kastner MT, Stecher C, Schneider M, Andreas M, Greinix H, Kallay E, Honsig C, Steininger C. Cytomegalovirus Infection Downregulates Vitamin D Receptor in Patients Undergoing Hematopoietic Stem Cell Transplantation. Transplantation 2021; 105:1595-1602. [PMID: 32890131 DOI: 10.1097/tp.0000000000003448] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND Allogeneic hematopoietic stem cell transplantation (HSCT) is a potentially curative option for patients with hematologic diseases but is associated with high mortality and morbidity. Cytomegalovirus (CMV) infection is common in HSCT patients and modulates vitamin D metabolism in vitro. We aimed at validating CMV-associated vitamin D metabolism in vivo in HSCT. METHODS Patients treated for significant CMV viremia after HSCT were evaluated for CMV load before, during, and after antiviral treatment. RNA was isolated from whole-blood samples to test for regulation of key components of the vitamin D receptor (VDR) pathway during different phases of CMV viremia. RESULTS CMV viremia developed a mean time of 102 (±34) d post-HSCT. Maximum levels of CMV-DNA reached a mean of 5668 (±7257) copies/mL. VDR expression was downregulated to a mean of 64.3% (±42.5%) relative to the VDR expression pre-CMV viremia (P = 0.035) and lagged in recovery following antiviral treatment. Toll-like receptor (TLR) 2 mRNA was upregulated to 225.4% during CMV viremia relative to the expression pre-CMV viremia (P = 0.012) but not TLR6/7/8 and the TLR-adaptor protein MyD88. Levels of 25-OH vitamin D were reduced in all viremic patients (48.0 ± 4.8 versus 25.1 ± 3.7 ng/mL) and were even lower after periods of CMV viremia compared with the control group (48.3 ± 3.5 versus 17.8 ± 1.8 ng/mL; P = 0.008). CONCLUSIONS CMV viremia is associated with significant dysregulation of vitamin D metabolism in HSCT patients.
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Affiliation(s)
- Oliver Robak
- Department of Internal Medicine I, Medical University of Vienna, Vienna, Austria
| | - Marie-Theres Kastner
- Department of Internal Medicine I, Medical University of Vienna, Vienna, Austria
| | - Carmen Stecher
- Department of Internal Medicine I, Medical University of Vienna, Vienna, Austria
| | - Martina Schneider
- Department of Internal Medicine I, Medical University of Vienna, Vienna, Austria
| | - Martin Andreas
- Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria
| | - Hildegard Greinix
- Department of Haematology, Medical University of Graz, Graz, Austria
| | - Enikö Kallay
- Department of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria
| | - Claudia Honsig
- Division of Clinical Virology, Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Christoph Steininger
- Department of Internal Medicine I, Medical University of Vienna, Vienna, Austria
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26
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Dos Santos RN, Maeda SS, Jardim JR, Lazaretti-Castro M. Reasons to avoid vitamin D deficiency during COVID-19 pandemic. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2021; 64:498-506. [PMID: 34033288 PMCID: PMC10118971 DOI: 10.20945/2359-3997000000291] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The effects of vitamin D on the musculoskeletal system are well established. Its deficiency causes osteomalacia, secondary hyperparathyroidism, and an increased risk for fractures and falls. However, clinical and experimental evidence points to extra-skeletal actions of vitamin D, including on immune and respiratory systems. Thus, during this COVID-19 pandemic, a possible deleterious role of vitamin D deficiency has been questioned. This paper aims to present a brief review of the literature and discuss, based on evidence, the role of vitamin D in the lung function and in the prevention of respiratory infections. Relevant articles were searched in the databases MEDLINE/PubMed and SciELO/LILACS. The mechanisms of vitamin D action in the immune system response will be discussed. Clinical data from systematic reviews and meta-analyses show benefits in the prevention of respiratory infections and improvement of pulmonary function when vitamin D-deficient patients are supplemented. At the time of writing this paper, no published data on vitamin D supplementation for patients with COVID-19 have been found. Vitamin D supplementation is recommended during this period of social isolation to avoid any deficiency, especially in the context of bone outcomes, aiming to achieve normal values of 25(OH)D. The prevention of respiratory infections and improvement of pulmonary function are additional benefits observed when vitamin D deficiency is treated. Thus far, any protective effect of vitamin D specifically against severe COVID-19 remains unclear. We also emphasize avoiding bolus or extremely high doses of vitamin D, which can increase the risk of intoxication without evidence of benefits.
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Affiliation(s)
- Rodrigo Nolasco Dos Santos
- Disciplina de Endocrinologia, Departamento de Medicina, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
| | - Sergio Setsuo Maeda
- Disciplina de Endocrinologia, Departamento de Medicina, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil,
| | - José Roberto Jardim
- Disciplina de Pneumologia, Departamento de Medicina, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
| | - Marise Lazaretti-Castro
- Disciplina de Endocrinologia, Departamento de Medicina, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
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27
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Pinheiro MM, Pinheiro FMM, Diniz SN, Fabbri A, Infante M. Combination of vitamin D and dipeptidyl peptidase-4 inhibitors (VIDPP-4i) as an immunomodulation therapy for autoimmune diabetes. Int Immunopharmacol 2021; 95:107518. [PMID: 33756226 DOI: 10.1016/j.intimp.2021.107518] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/15/2021] [Accepted: 02/16/2021] [Indexed: 12/18/2022]
Abstract
Type 1 diabetes (T1D) and latent autoimmune diabetes in adults (LADA) represent the most common types of autoimmune diabetes and are characterized by different age of onset, degrees of immune-mediated destruction of pancreatic beta cells and rates of disease progression towards insulin dependence. Several immunotherapies aimed to counteract autoimmune responses against beta cells and preserve beta-cell function are currently being investigated, particularly in T1D. Preliminary findings suggest a potential role of combination therapy with vitamin D and dipeptidyl peptidase-4 (DPP-4) inhibitors (VIDPP-4i) in preserving beta-cell function in autoimmune diabetes. This manuscript aims to provide a comprehensive overview of the immunomodulatory properties of vitamin D and DPP-4 inhibitors, as well as the rationale for investigation of their combined use as an immunomodulation therapy for autoimmune diabetes.
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Affiliation(s)
- Marcelo Maia Pinheiro
- UNIVAG, University Center, Dom Orlando Chaves Ave, 2655 - Cristo Rei, Várzea Grande, 78118-000 Mato Grosso, Brazil; Universidade Anhanguera de São Paulo - SP, 3305, Raimundo Pereira de Magalhães Ave., Pirituba, São Paulo, 05145-200 São Paulo, Brazil.
| | - Felipe Moura Maia Pinheiro
- Hospital de Base, Faculdade de Medicina de São José do Rio Preto FAMERP - SP, 5546, Brigadeiro Faria Lima Ave, Vila São Pedro, São José do Rio Preto, 15015-500 São Paulo, Brazil
| | - Susana Nogueira Diniz
- Universidade Anhanguera de São Paulo - SP, 3305, Raimundo Pereira de Magalhães Ave., Pirituba, São Paulo, 05145-200 São Paulo, Brazil
| | - Andrea Fabbri
- Diabetes Research Institute Federation (DRIF), Division of Endocrinology and Diabetes, CTO Andrea Alesini Hospital, ASL Roma 2, Department of Systems Medicine, University of Rome Tor Vergata, Via San Nemesio 21, 00145 Rome, Italy
| | - Marco Infante
- Diabetes Research Institute Federation (DRIF), Division of Endocrinology and Diabetes, CTO Andrea Alesini Hospital, ASL Roma 2, Department of Systems Medicine, University of Rome Tor Vergata, Via San Nemesio 21, 00145 Rome, Italy; UniCamillus, Saint Camillus International University of Health Sciences, Via di Sant'Alessandro, 8, 00131 Rome, Italy; Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Via San Nemesio 21, 00145 Rome, Italy.
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28
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Pagnini C, Picchianti-Diamanti A, Bruzzese V, Lorenzetti R, Luchetti MM, Martin Martin LS, Pica R, Scolieri P, Scribano ML, Zampaletta C, Chimenti MS, Lagana B. Vitamin D Signaling in Gastro-Rheumatology: From Immuno-Modulation to Potential Clinical Applications. Int J Mol Sci 2021; 22:ijms22052456. [PMID: 33671090 PMCID: PMC7957646 DOI: 10.3390/ijms22052456] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 02/23/2021] [Accepted: 02/24/2021] [Indexed: 12/31/2022] Open
Abstract
In the last decades, the comprehension of the pathophysiology of bone metabolism and its interconnections with multiple homeostatic processes has been consistently expanded. The branch of osteoimmunology specifically investigating the link between bone and immune system has been developed. Among molecular mediators potentially relevant in this field, vitamin D has been recently pointed out, and abnormalities of the vitamin D axis have been described in both in vitro and in vivo models of inflammatory bowel diseases (IBD) and arthritis. Furthermore, vitamin D deficiency has been reported in patients affected by IBD and chronic inflammatory arthritis, thus suggesting the intriguing possibility of impacting the disease activity by the administration vitamin D supplements. In the present review, the complex interwoven link between vitamin D signaling, gut barrier integrity, microbiota composition, and the immune system was examined. Potential clinical application exploiting vitamin D pathway in the context of IBD and arthritis is presented and critically discussed. A more detailed comprehension of the vitamin D effects and interactions at molecular level would allow one to achieve a novel therapeutic approach in gastro-rheumatologic inflammatory diseases through the design of specific trials and the optimization of treatment protocols.
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Affiliation(s)
- Cristiano Pagnini
- Department of Gastroenterology and Digestive Endoscopy, S. Giovanni Addolorata Hospital, 00184 Rome, Italy;
| | - Andrea Picchianti-Diamanti
- Department of Clinical and Molecular Medicine, S. Andrea University Hospital, Sapienza University, 00189 Rome, Italy;
- Correspondence:
| | - Vincenzo Bruzzese
- Department of Internal Medicine, Rheumatology and Gastroenterology, Nuovo Regina Margherita Hospital, 00153 Rome, Italy; (V.B.); (R.L.); (P.S.)
| | - Roberto Lorenzetti
- Department of Internal Medicine, Rheumatology and Gastroenterology, Nuovo Regina Margherita Hospital, 00153 Rome, Italy; (V.B.); (R.L.); (P.S.)
| | - Michele Maria Luchetti
- Clinica Medica, Dipartimento di Scienze Cliniche e Molecolari, Università Politecnica delle Marche, 60131 Ancona, Italy;
| | | | - Roberta Pica
- Unit of Gastroenterology and Digestive Endoscopy, Sandro Pertini Hospital, 00157 Rome, Italy;
| | - Palma Scolieri
- Department of Internal Medicine, Rheumatology and Gastroenterology, Nuovo Regina Margherita Hospital, 00153 Rome, Italy; (V.B.); (R.L.); (P.S.)
| | | | | | - Maria Sole Chimenti
- Rheumatology, Allergology and Clinical Immunology, Department of Medicina dei Sistemi, University of Rome Tor Vergata, 00187 Rome, Italy;
| | - Bruno Lagana
- Department of Clinical and Molecular Medicine, S. Andrea University Hospital, Sapienza University, 00189 Rome, Italy;
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29
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L Bishop E, Ismailova A, Dimeloe S, Hewison M, White JH. Vitamin D and Immune Regulation: Antibacterial, Antiviral, Anti-Inflammatory. JBMR Plus 2021; 5:e10405. [PMID: 32904944 PMCID: PMC7461279 DOI: 10.1002/jbm4.10405] [Citation(s) in RCA: 126] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 08/05/2020] [Indexed: 02/06/2023] Open
Abstract
Regulation of immune function continues to be one of the most well-recognized extraskeletal actions of vitamin D. This stemmed initially from the discovery that antigen presenting cells such as macrophages could actively metabolize precursor 25-hydroxyvitamin D (25D) to active 1,25-dihydroxyvitamin D (1,25D). Parallel observation that activated cells from the immune system expressed the intracellular vitamin D receptor (VDR) for 1,25D suggested a potential role for vitamin D as a localized endogenous modulator of immune function. Subsequent studies have expanded our understanding of how vitamin D exerts effects on both the innate and adaptive arms of the immune system. At an innate level, intracrine synthesis of 1,25D by macrophages and dendritic cells stimulates expression of antimicrobial proteins such as cathelicidin, as well as lowering intracellular iron concentrations via suppression of hepcidin. By potently enhancing autophagy, 1,25D may also play an important role in combatting intracellular pathogens such as M. tuberculosis and viral infections. Local synthesis of 1,25D by macrophages and dendritic cells also appears to play a pivotal role in mediating T-cell responses to vitamin D, leading to suppression of inflammatory T helper (Th)1 and Th17 cells, and concomitant induction of immunotolerogenic T-regulatory responses. The aim of this review is to provide an update on our current understanding of these prominent immune actions of vitamin D, as well as highlighting new, less well-recognized immune effects of vitamin D. The review also aims to place this mechanistic basis for the link between vitamin D and immunity with studies in vivo that have explored a role for vitamin D supplementation as a strategy for improved immune health. This has gained prominence in recent months with the global coronavirus disease 2019 health crisis and highlights important new objectives for future studies of vitamin D and immune function. © 2020 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Emma L Bishop
- Institute of Immunology and ImmunotherapyUniversity of BirminghamBirminghamUK
| | - Aiten Ismailova
- Department of PhysiologyMcGill UniversityMontrealQuebecCanada
| | - Sarah Dimeloe
- Institute of Immunology and ImmunotherapyUniversity of BirminghamBirminghamUK
- Metabolism and Systems ResearchUniversity of BirminghamBirminghamUK
| | - Martin Hewison
- Metabolism and Systems ResearchUniversity of BirminghamBirminghamUK
| | - John H White
- Department of PhysiologyMcGill UniversityMontrealQuebecCanada
- Department of MedicineMcGill UniversityMontrealQuebecCanada
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30
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Malaguarnera L. Vitamin D3 as Potential Treatment Adjuncts for COVID-19. Nutrients 2020; 12:E3512. [PMID: 33202670 PMCID: PMC7697253 DOI: 10.3390/nu12113512] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/11/2020] [Accepted: 11/12/2020] [Indexed: 02/07/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus type (SARS-CoV2, also known as COVID-19), which is the latest pandemic infectious disease, constitutes a serious risk to human health. SARS-CoV2 infection causes immune activation and systemic hyperinflammation which can lead to respiratory distress syndrome (ARDS). ARDS victims are characterized by a significant increase in IL-6 and IL-1. Macrophage activation, associated with the "cytokine storm", promotes the dysregulation of the innate immunity. So far, without vaccines or specific therapy, all efforts to design drugs or clinical trials are worthwhile. Vitamin D and its receptor vitamin D receptor (VDR) exert a critical role in infections due to their remarkable impact on both innate and adaptive immune responses and on the suppression of the inflammatory process. The protective properties of vitamin D supplementation have been supported by numerous observational studies and by meta-analysis of clinical trials for prevention of viral acute respiratory infection. In this review, we compare the mechanisms of the host immune response to SARS-CoV2 infection and the immunomodulatory actions that vitamin D exerts in order to consider the preventive effect of vitamin D supplementation on SARS-CoV2 viral infection.
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Affiliation(s)
- Lucia Malaguarnera
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95124 Catania, Italy
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31
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Çolak Y, Nordestgaard BG, Afzal S. Low vitamin D and risk of bacterial pneumonias: Mendelian randomisation studies in two population-based cohorts. Thorax 2020; 76:468-478. [PMID: 33109689 DOI: 10.1136/thoraxjnl-2020-215288] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 09/10/2020] [Accepted: 10/08/2020] [Indexed: 01/29/2023]
Abstract
BACKGROUND Vitamin D may regulate the innate immune system, and randomised controlled trials suggest a beneficial effect of vitamin D supplementation against acute respiratory tract infections. By using a Mendelian randomisation approach, we tested the hypothesis that low 25-hydroxyvitamin D is associated with increased risk of bacterial pneumonia in observational and genetic analyses. METHODS We genotyped 116 335 randomly chosen white Danes aged 20 to 100 from the Copenhagen City Heart Study and Copenhagen General Population Study for plasma 25-hydroxyvitamin D decreasing genetic variants around CYP2R1 (rs117913124, rs12794714 and rs10741657), DHCR7 (rs7944926 and rs11234027), GEMIN2 (rs2277458) and HAL (rs3819817). Information on plasma 25-hydroxyvitamin D was available on 35 833 individuals. Individuals were followed from 1981 through 2018 for hospital diagnoses of bacterial pneumonias. RESULTS During up to 38 years follow-up, we observed 6342 bacterial pneumonias in observational analyses and 13 916 in genetic analyses. In observational analyses, multivariable adjusted HR for bacterial pneumonias was 1.27 (95% CI: 1.16 to 1.40) for individuals with 25-hydroxyvitamin D<25 nmol/L compared with those with ≥25 nmol/L. In genetic analyses, the OR for bacterial pneumonia per 10 nmol/L lower plasma 25-hydroxyvitamin D was 1.12 (95% CI: 1.02 to 1.23) in Wald's ratio, 1.12 (95% CI: 1.04 to 1.20) in inverse-variance weighted, 1.63 (95% CI: 0.96 to 2.78) in MR-Egger and 1.15 (95% CI: 1.05 to 1.26) in weighted median instrumental variable analysis. This association was strongest for genetic variants around CYP2R1. There was no observational or genetic evidence to support that 25-hydroxyvitamin D is associated with risk of urinary tract infections, skin infections, sepsis or gastroenteritis, which were used as negative control outcomes. CONCLUSIONS Low vitamin D is associated observationally and genetically with increased risk of bacterial pneumonias.
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Affiliation(s)
- Yunus Çolak
- Department of Clinical Biochemistry and the Copenhagen General Population Study, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark.,Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Børge G Nordestgaard
- Department of Clinical Biochemistry and the Copenhagen General Population Study, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark.,Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,The Copenhagen City Heart Study, Frederiksberg Hospital, Copenhagen University Hospital, Copenhagen, Denmark
| | - Shoaib Afzal
- Department of Clinical Biochemistry and the Copenhagen General Population Study, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark .,Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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32
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Wu Q, Wang D, Zhang Z, Wang Y, Yu W, Sun K, Maimela NR, Sun Z, Liu J, Yuan W, Zhang Y. DEFB4A is a potential prognostic biomarker for colorectal cancer. Oncol Lett 2020; 20:114. [PMID: 32863927 PMCID: PMC7448564 DOI: 10.3892/ol.2020.11975] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 07/08/2020] [Indexed: 12/11/2022] Open
Abstract
Colorectal cancer (CRC) is the third leading cause of cancer-associated mortality. The present study aimed to investigate novel biomarkers to predict prognosis and provide a theoretical basis for studies of the pathogenesis and the development of therapies for CRC. The present study compared mRNA expression levels of patients with CRC with short- and long-term prognosis and of individuals with and without tumors in The Cancer Genome Atlas (TCGA) database. Differentially expressed genes (DEGs) were identified via volcano plot and Venn diagram analysis. Gene Ontology (GO) analysis and gene set enrichment analysis (GSEA) were performed to identify the functions of the DEGs, and the DEGs were further verified using clinical CRC samples. A total of 10 DEGs were identified as candidate genes using the TCGA database, and four DEGs [defensin β 4A (DEFB4A), hyaluronan binding protein 2 (HABP2), oleoyl-ACP hydrolase and TBC1 domain family member 3G] were associated with poor prognosis of patients with CRC. Two DEGs (DEFB4A and HABP2) were upregulated in tumor tissues of patients with CRC in the TCGA database. GO and GSEA analyses revealed that DEFB4A was highly associated with immunosuppression, participates in ‘myeloid leukocyte differentiation’, ‘leukocyte proliferation’ and ‘positive regulation of leukocyte-mediated immunity’, and was positively correlated with CD11b, CD14, CD45, CD163 and IL17A. Furthermore, DEFB4A expression was significantly upregulated in patients with large tumors, advanced cancer stage, lymph node metastasis and liver metastasis. Survival analysis revealed that DEFB4A upregulation was associated with poor prognosis. DEFB4A gene knockdown experiments demonstrated that DEF4BA promotes cell migration. These results indicated that DEFB4A potentially promotes tumor growth by regulating immunosuppressive activity and provided novel insights into the diagnosis and treatment of CRC.
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Affiliation(s)
- Qian Wu
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China.,Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Dan Wang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China.,Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Zhen Zhang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China.,Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Yaping Wang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China.,Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Weina Yu
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China.,Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Kai Sun
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China.,Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Nomathamsanqa Resegofetse Maimela
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China.,Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Zhenqiang Sun
- Department of Anorectal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Jinbo Liu
- Department of Anorectal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Weitang Yuan
- Department of Anorectal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Yi Zhang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China.,Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China.,School of Life Sciences, Zhengzhou University, Zhengzhou, Henan 450052, P.R. China.,Henan Key Laboratory for Tumor Immunology and Biotherapy, Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
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Singh M, Vaughn C, Sasaninia K, Yeh C, Mehta D, Khieran I, Venketaraman V. Understanding the Relationship between Glutathione, TGF-β, and Vitamin D in Combating Mycobacterium tuberculosis Infections. J Clin Med 2020; 9:jcm9092757. [PMID: 32858837 PMCID: PMC7563738 DOI: 10.3390/jcm9092757] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/17/2020] [Accepted: 08/21/2020] [Indexed: 12/31/2022] Open
Abstract
Tuberculosis (TB) remains a pervasive global health threat. A significant proportion of the world's population that is affected by latent tuberculosis infection (LTBI) is at risk for reactivation and subsequent transmission to close contacts. Despite sustained efforts in eradication, the rise of multidrug-resistant strains of Mycobacteriumtuberculosis (M. tb) has rendered traditional antibiotic therapy less effective at mitigating the morbidity and mortality of the disease. Management of TB is further complicated by medications with various off-target effects and poor compliance. Immunocompromised patients are the most at-risk in reactivation of a LTBI, due to impairment in effector immune responses. Our laboratory has previously reported that individuals suffering from Type 2 Diabetes Mellitus (T2DM) and HIV exhibited compromised levels of the antioxidant glutathione (GSH). Restoring the levels of GSH resulted in improved control of M. tb infection. The goal of this review is to provide insights on the diverse roles of TGF- β and vitamin D in altering the levels of GSH, granuloma formation, and clearance of M. tb infection. We propose that these pathways represent a potential avenue for future investigation and development of new TB treatment modalities.
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Affiliation(s)
- Mohkam Singh
- Graduate College of Biomedical Sciences, Western University of Health Sciences, Pomona, CA 91766-1854, USA; (M.S.); (C.V.); (K.S.)
| | - Charles Vaughn
- Graduate College of Biomedical Sciences, Western University of Health Sciences, Pomona, CA 91766-1854, USA; (M.S.); (C.V.); (K.S.)
| | - Kayvan Sasaninia
- Graduate College of Biomedical Sciences, Western University of Health Sciences, Pomona, CA 91766-1854, USA; (M.S.); (C.V.); (K.S.)
| | - Christopher Yeh
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766-1854, USA; (C.Y.); (D.M.); (I.K.)
| | - Devanshi Mehta
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766-1854, USA; (C.Y.); (D.M.); (I.K.)
| | - Ibrahim Khieran
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766-1854, USA; (C.Y.); (D.M.); (I.K.)
| | - Vishwanath Venketaraman
- Graduate College of Biomedical Sciences, Western University of Health Sciences, Pomona, CA 91766-1854, USA; (M.S.); (C.V.); (K.S.)
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766-1854, USA; (C.Y.); (D.M.); (I.K.)
- Correspondence: ; Tel.: +1-909-706-3736
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Vitamin D's Effect on Immune Function. Nutrients 2020; 12:nu12051248. [PMID: 32353972 PMCID: PMC7281985 DOI: 10.3390/nu12051248] [Citation(s) in RCA: 198] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 04/24/2020] [Accepted: 04/26/2020] [Indexed: 02/06/2023] Open
Abstract
Ever since its discovery by Windhaus, the importance of the active metabolite of vitamin D (1,25-dihydroxyvitamin D3; 1,25-(OH)2D3) has been ever expanding. In this review, the attention is shifted towards the importance of the extra-skeletal effects of vitamin D, with special emphasis on the immune system. The first hint of the significant role of vitamin D on the immune system was made by the discovery of the presence of the vitamin D receptor on almost all cells of the immune system. In vitro, the overwhelming effect of supra-physiological doses of vitamin D on the individual components of the immune system is very clear. Despite these promising pre-clinical results, the translation of the in vitro observations to solid clinical effects has mostly failed. Nevertheless, the evidence of a link between vitamin D deficiency and adverse outcomes is overwhelming and clearly points towards avoidance of vitamin D deficiency especially in early life.
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Anderson J, Do LAH, Toh ZQ, Hoe E, Reitsma A, Mulholland K, Licciardi PV. Vitamin D Induces Differential Effects on Inflammatory Responses During Bacterial and/or Viral Stimulation of Human Peripheral Blood Mononuclear Cells. Front Immunol 2020; 11:602. [PMID: 32318074 PMCID: PMC7154168 DOI: 10.3389/fimmu.2020.00602] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 03/16/2020] [Indexed: 12/13/2022] Open
Abstract
Streptococcus pneumoniae (pneumococcus) and respiratory syncytial virus (RSV) are the leading causes of respiratory infections amongst children <5 years of age. Co-infection with these pathogens is common during early life and often associated with increased disease severity. Epidemiological studies have shown that low levels of Vitamin D3 (VitD3) are associated with increased susceptibility to respiratory pathogens. However, the role of VitD3 in the context of pneumococcal and RSV exposure are poorly understood. We found that VitD3 significantly reduced Th17 cell expression and IL-17A and IL-22 secretion in peripheral blood mononuclear cells (PBMCs) when stimulated with a pneumococcal whole cell antigen (WCA). Levels of IFN-γ were also decreased whilst IL-10 and IL-1β were increased. Effects of VitD3 on innate responses following RSV stimulation was limited, only reducing IL-6. VitD3 also reduced the number of TLR2+CD14+ monocytes, whilst increasing TLR7+CD14+ monocytes and TLR4+CD56+ NK cells. In WCA-stimulated PBMCs, VitD3 increased IL-1β levels but reduced TLR2+CD14+ monocytes. For pneumococcal WCA-RSV co-stimulation, VitD3 only had a limited effect, mainly through increased IL-1β and RANTES as well as TLR4+CD56+ NK cells. Our results suggest that VitD3 can modulate the inflammatory response to pneumococci but has limited effects during viral or bacterial-viral exposure. This is the first study to examine the effects of VitD3 in the context of pneumococcal-RSV co-stimulation, with important implications on the potential role of VitD3 in the control of excessive inflammatory responses during pneumococcal and RSV infections.
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Affiliation(s)
- Jeremy Anderson
- Murdoch Children's Research Institute, Melbourne, VIC, Australia
| | - Lien Anh Ha Do
- Murdoch Children's Research Institute, Melbourne, VIC, Australia.,Department of Paediatrics, University of Melbourne, Parkville, VIC, Australia
| | - Zheng Quan Toh
- Murdoch Children's Research Institute, Melbourne, VIC, Australia.,Department of Paediatrics, University of Melbourne, Parkville, VIC, Australia
| | - Edwin Hoe
- Murdoch Children's Research Institute, Melbourne, VIC, Australia
| | - Andrea Reitsma
- Murdoch Children's Research Institute, Melbourne, VIC, Australia
| | - Kim Mulholland
- Murdoch Children's Research Institute, Melbourne, VIC, Australia.,Department of Paediatrics, University of Melbourne, Parkville, VIC, Australia.,Epidemiology and Public Health, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Paul V Licciardi
- Murdoch Children's Research Institute, Melbourne, VIC, Australia.,Department of Paediatrics, University of Melbourne, Parkville, VIC, Australia
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Unique responses of Helicobacter pylori to exogenous hydrophobic compounds. Chem Phys Lipids 2020; 229:104908. [PMID: 32259519 DOI: 10.1016/j.chemphyslip.2020.104908] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 03/14/2020] [Accepted: 03/17/2020] [Indexed: 02/08/2023]
Abstract
Helicobacter pylori is a pathogen responsible for peptic ulcers and gastric cancers in human. One of the unique biological features of this bacterium is a membrane lipid composition significantly differed from that of typical Gram-negative bacteria. Due to its unique lipid composition, the responses of H. pylori to various exogenous lipophilic compounds significantly differ from the responses of typical Gram-negative bacteria to the same lipophilic compounds. For instance, some steroidal compounds are incorporated into the biomembranes of H. pylori through the intermediation of the myristoyl-phosphatidylethanolamine (PE). In addition, H. pylori shows high susceptibility to bacteriolytic action of lipids such as 3-carbonyl steroids, vitamin D, and indene compounds. These lipids are also considered to interact with myristoyl-PE of H. pylori membranes, and to ultimately confer the bactericidal action to this bacterium. In this study we summarize the lipids concerned with H. pylori and suggest the possibility of the development of chemotherapeutic medicines that act on the membrane lipid component of H. pylori.
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Harrison SR, Li D, Jeffery LE, Raza K, Hewison M. Vitamin D, Autoimmune Disease and Rheumatoid Arthritis. Calcif Tissue Int 2020; 106:58-75. [PMID: 31286174 PMCID: PMC6960236 DOI: 10.1007/s00223-019-00577-2] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 06/18/2019] [Indexed: 02/06/2023]
Abstract
Vitamin D has been reported to influence physiological systems that extend far beyond its established functions in calcium and bone homeostasis. Prominent amongst these are the potent immunomodulatory effects of the active form of vitamin D, 1,25-dihydroxyvitamin D3 (1,25-(OH)2D3). The nuclear vitamin D receptor (VDR) for 1,25-(OH)2D3 is expressed by many cells within the immune system and resulting effects include modulation of T cell phenotype to suppress pro-inflammatory Th1 and Th17 CD4+ T cells and promote tolerogenic regulatory T cells. In addition, antigen-presenting cells have been shown to express the enzyme 1α-hydroxylase that converts precursor 25-hydroxyvitamin D3 (25-OHD3) to 1,25-(OH)2D3, so that immune microenvironments are able to both activate and respond to vitamin D. As a consequence of this local, intracrine, system, immune responses may vary according to the availability of 25-OHD3, and vitamin D deficiency has been linked to various autoimmune disorders including rheumatoid arthritis (RA). The aim of this review is to explore the immune activities of vitamin D that impact autoimmune disease, with specific reference to RA. As well as outlining the mechanisms linking vitamin D with autoimmune disease, the review will also describe the different studies that have linked vitamin D status to RA, and the current supplementation studies that have explored the potential benefits of vitamin D for prevention or treatment of RA. The overall aim of the review is to provide a fresh perspective on the potential role of vitamin D in RA pathogenesis and treatment.
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Affiliation(s)
- Stephanie R Harrison
- Institute of Metabolism and Systems Research, The University of Birmingham, Birmingham, B15 2TT, UK
- Department of Rheumatology, Sandwell and West, Birmingham Hospitals NHS Trust, Birmingham, B18 7QH, UK
| | - Danyang Li
- Institute of Metabolism and Systems Research, The University of Birmingham, Birmingham, B15 2TT, UK
| | - Louisa E Jeffery
- Institute of Translation Medicine, The University of Birmingham, Birmingham, B15 2TT, UK
| | - Karim Raza
- Department of Rheumatology, Sandwell and West, Birmingham Hospitals NHS Trust, Birmingham, B18 7QH, UK
- Institute of Inflammation and Ageing, Arthritis Research UK Rheumatoid Arthritis Pathogenesis Centre of Excellence and MRC Arthritis Research UK Centre for Musculoskeletal Ageing Research, University of Birmingham, Birmingham, B15 2TT, UK
| | - Martin Hewison
- Institute of Metabolism and Systems Research, The University of Birmingham, Birmingham, B15 2TT, UK.
- Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, B15 2TT, UK.
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Zisi D, Challa A, Makis A. The association between vitamin D status and infectious diseases of the respiratory system in infancy and childhood. Hormones (Athens) 2019; 18:353-363. [PMID: 31768940 PMCID: PMC7092025 DOI: 10.1007/s42000-019-00155-z] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 10/29/2019] [Indexed: 12/12/2022]
Abstract
PURPOSE Respiratory tract infections (RTIs) are a major cause of illness worldwide and the most common cause of hospitalization for pneumonia and bronchiolitis. These two diseases are the leading causes of morbidity and mortality among children under 5 years of age. Vitamin D is believed to have immunomodulatory effects on the innate and adaptive immune systems by modulating the expression of antimicrobial peptides, like cathelicidin, in response to both viral and bacterial stimuli. The aim of this review is to summarize the more recently published data with regard to potential associations of 25-hydroxyvitamin D [25(OH)D] with infectious respiratory tract diseases of childhood and the possible health benefits from vitamin D supplementation. METHODS The literature search was conducted by using the PubMed, Scopus, and Google Scholar databases, with the following keywords: vitamin D, respiratory tract infection, tuberculosis, influenza, infancy, and childhood. RESULTS Several studies have identified links between inadequate 25(OH)D concentrations and the development of upper or lower respiratory tract infections in infants and young children. Some of them also suggest that intervention with vitamin D supplements could decrease both child morbidity and mortality from such causes. CONCLUSIONS Most studies agree in that decreased vitamin D concentrations are prevalent among most infants and children with RTIs. Also, normal to high-serum 25(OH)D appears to have some beneficial influence on the incidence and severity of some, but not all, types of these infections. However, studies with vitamin D supplementation revealed conflicting results as to whether supplementation may be of benefit, and at what doses.
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Affiliation(s)
- Dimitra Zisi
- Child Health Department, Faculty of Medicine, University of Ioannina, P.O. Box 1187, 451 10, Ioannina, Greece
| | - Anna Challa
- Child Health Department, Faculty of Medicine, University of Ioannina, P.O. Box 1187, 451 10, Ioannina, Greece
| | - Alexandros Makis
- Child Health Department, Faculty of Medicine, University of Ioannina, P.O. Box 1187, 451 10, Ioannina, Greece.
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Mao X, Qiu X, Jiao C, Lu M, Zhao X, Li X, Li J, Ma J, Zhang H. Candida albicans SC5314 inhibits NLRP3/NLRP6 inflammasome expression and dampens human intestinal barrier activity in Caco-2 cell monolayer model. Cytokine 2019; 126:154882. [PMID: 31629100 DOI: 10.1016/j.cyto.2019.154882] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 09/26/2019] [Accepted: 10/07/2019] [Indexed: 01/27/2023]
Abstract
Candida albicans is an opportunistic fungal pathogen that colonizes human gastro-intestinal mucosal tissues. Its effect on the immune response in intestinal epithelial cells and on the intestinal mucosal barrier are not yet fully understood. In this study, we investigated Caco-2 cells, a monolayer model of intestinal epithelial cells, with or without treatment with C. albicans SC5314 (CA) or heat-inactivated CA (CA-inact). RNA sequencing was conducted, and the mRNA and protein levels of NOD-like receptor pyrin domain-containing protein 3 (NLRP3) or NLRP6/ASC/caspase-1 inflammasome signaling pathway components, inflammatory cytokines (interleukin-18 [IL-18] and IL-1β), anti-microbial peptides (AMPs; β-defensin-2 [BD-2], BD-3, and LL-37), and tight junction proteins (occludin and zona occludens-1 [ZO-1]) were examined by real-time PCR, western blotting, and/or immunofluorescence microscopy. Lactase dehydrogenase (LDH) activity in the Caco-2 cell supernatant were measured by enzyme kinetics analysis. Our results showed that the NOD-like receptor signaling pathway participates in the CA- and CA-inact-infected Caco-2 cells, as shown by microarray analysis of total mRNA expression. The expression of NLRP3, NLRP6, ASC, BD-2, BD-3, occludin, and ZO-1 were significantly decreased in Caco-2 cells infected with CA and CA-inact compared to that in the untreated control. IL-1β expression was decreased in the Caco-2 cells in both the CA- and CA-inact-infected groups compared to that in the control. Caspase-1 and IL-18 levels were not markedly affected by CA or CA-inact in Caco-2 cells. Our findings indicate that CA can inhibit the NLRP3 and NLRP6 pathways and dampen human intestinal mucosal barrier activity by decreasing the production of AMPs and tight junction proteins, independent of CA activity.
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Affiliation(s)
- Xiaqiong Mao
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xinyun Qiu
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Chunhua Jiao
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Meijiao Lu
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiaojing Zhao
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xueting Li
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jiajia Li
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jingjing Ma
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Hongjie Zhang
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
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Polymorphisms in the P2X7 receptor, and differential expression of Toll-like receptor-mediated cytokines and defensins, in a Canadian Indigenous group. Sci Rep 2019; 9:14204. [PMID: 31578370 PMCID: PMC6775093 DOI: 10.1038/s41598-019-50596-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 09/16/2019] [Indexed: 12/21/2022] Open
Abstract
Canadian Indigenous peoples (First Nations and Inuit) exhibit a high burden of infectious diseases including tuberculosis influenced by societal factors, and biological determinants. Toll-like receptor (TLR)-mediated innate immune responses are the first line of defence against infections. We examined the production of a panel of 30 cytokines in peripheral blood-derived mononuclear cells (PBMC) isolated from Indigenous and non-Indigenous participants, following stimulation with five different TLR ligands. The levels of TLR-induced pro-inflammatory cytokines such as IL-12/23p40, IL-16, and IFN-γ, and chemokines (MCP-4, MDC and eotaxin) were different between Indigenous compared to non-Indigenous participants. Antimicrobial cationic host defence peptides (CHDP) induced by TLR activation are critical for resolution of infections and modulate the TLR-to-NFκB pathway to alter downstream cytokine responses. Therefore, we examined the expression of human CHDP defensins and cathelicidin in PBMC. mRNA expression of genes encoding for def-A1 and def-B1 were significantly higher following stimulation with TLR ligands in Indigenous compared to non-Indigenous participants. The purinergic receptor P2X7 known to be activated by ATP released following TLR stimulation, is a receptor for CHDP. Therefore, we further examined single nucleotide polymorphisms (SNP) in P2X7. Indigenous participants had a significantly higher percentage of a P2X7 SNP which is associated with reduced function and lower ability to clear infections. These results suggest that a higher frequency of non-functional P2X7 receptors may influence the activity of downstream immune mediators required for resolution of infections such as pro-inflammatory cytokines and CHDP defensins, thus contributing to higher burden of infections in Indigenous population.
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Abstract
Background: Tuberculosis is a leading cause of morbidity and mortality in humans worldwide. There is an urgent need for new and effective drugs to treat tuberculosis and shorten the duration of tuberculosis therapy. 1, 25-dihydroxy vitamin D3 (1,25 (OH)2D3) has been reported to have a synergistic effect with pyrazinamide (PZA) in killing tubercle bacilli in vitro. The addition of 1,25 (OH)2D3 to standard tuberculosis treatment should benefit patients if the adjunctive drug has a synergistic effect in vivo. Thus, in this study, calcitriol (bioactive 1,25 (OH)2D3) was administered to mice undergoing treatment for Mycobacterium tuberculosis (M.tb) infection with PZA, a first-line anti-tuberculosis drug, to determine whether vitamin D3 enhances the therapeutic effect. Methods: C57BL/6 female mice were infected with the M.tb H37Rv strain through aerosol exposure. Calcitriol and PZA, either alone or in combination, were orally administered to the M.tb infected mice. The effect of calcitriol on PZA activity was determined by evaluating the bacterial burden and analyzing the histopathological lesions in the lungs and spleen. To investigate the expression of inflammatory cytokines and anti-microbial peptide genes, we determined the transcriptional levels of interferon-γ (IFN-γ), interleukin-4 (IL-4), mouse β-defensin-2 (mBD2), and cathelicidin LL-37 through real-time quantitative polymerase chain reaction. The protein levels of IFN-γ were detected by enzyme-linked immunosorbent assay. Differences between groups were analyzed with independent samples t-test or one-way analysis of variance. Results: Calcitriol alone had little effect on tuberculosis infection, whereas PZA, compared with saline control treatment, decreased the bacterial burden (spleens: PZA vs. saline, 4.82 ± 0.22 vs. 5.22 ± 0.40 Log10 colony-forming units [CFU]/gram, t = 2.13, P < 0.05; lungs: PZA vs. saline, 5.55 ± 0.15 vs. 6.83 ± 0.46 Log10 CFU/gram, t = 6.56, P < 0.01) and pathological lesions in the lungs. Simultaneous administration of calcitriol with PZA, compared with PZA alone, decreased the bacterial load (spleen: calcitriol + PZA vs. PZA, 4.37 ± 0.13 vs. 4.82 ± 0.22 Log10 CFU/gram, t = 4.36, P < 0.01; lung: calcitriol + PZA vs. PZA, 5.03 ± 0.32 vs. 5.55 ± 0.15 Log10 CFU/gram, t = 3.58, P < 0.01) and attenuated the lung lesions (gross pathological score: calcitriol + PZA vs. PZA, 3.25 ± 0.50 vs. 2.50 ± 0.58, t = 1.96, P < 0.05; affected area of total lung area: calcitriol + PZA vs. PZA, 30.75% ± 6.50% vs. 21.55% ± 2.99%, t = 2.66, P < 0.05). Further studies demonstrated calcitriol significantly increased the expression of anti-inflammatory cytokine IL-4 but suppressed production of the pro-inflammatory cytokine IFN-γ (IL-4: calcitriol vs. saline, 5.69 ± 0.50 vs. 2.80 ± 0.56 fold of control, t = 6.74, P < 0.01; IFN-γ: calcitriol vs. saline, 1.36 ± 0.11 vs. 4.13 ± 0.83 fold of control, t = 5.77, P < 0.01). In addition, calcitriol alone or in combination with PZA significantly enhanced the transcriptional level of anti-microbial peptides (cathelicidin LL-37: calcitriol vs. saline, 10.59 ± 1.03 vs. 2.80 ± 0.90 fold of control, t = 9.85, P < 0.01; mBD2: calcitriol vs. saline, 7.92 ± 0.62 vs. 1.79 ± 0.45 fold of control, t = 13.82, P < 0.01), whereas PZA exerted a negative effect on anti-microbial peptide gene expression. Conclusions: Calcitriol as adjunctive treatment can result in beneficial treatment outcomes in M.tb infection by suppressing the inflammatory response and up-regulating the expression of anti-microbial peptides. These results indicate the feasibility of using calcitriol adjunctively with standard chemotherapy for the treatment of M.tb infection.
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R. Andrade P, Mehta M, Lu J, M. B. Teles R, Montoya D, O. Scumpia P, Nunes Sarno E, Ochoa MT, Ma F, Pellegrini M, Modlin RL. The cell fate regulator NUPR1 is induced by Mycobacterium leprae via type I interferon in human leprosy. PLoS Negl Trop Dis 2019; 13:e0007589. [PMID: 31344041 PMCID: PMC6684084 DOI: 10.1371/journal.pntd.0007589] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 08/06/2019] [Accepted: 06/30/2019] [Indexed: 11/18/2022] Open
Abstract
The initial interaction between a microbial pathogen and the host immune response influences the outcome of the battle between the host and the foreign invader. Leprosy, caused by the obligate intracellular pathogen Mycobacterium leprae, provides a model to study relevant human immune responses. Previous studies have adopted a targeted approach to investigate host response to M. leprae infection, focusing on the induction of specific molecules and pathways. By measuring the host transcriptome triggered by M. leprae infection of human macrophages, we were able to detect a host gene signature 24-48 hours after infection characterized by specific innate immune pathways involving the cell fate mechanisms autophagy and apoptosis. The top upstream regulator in the M. leprae-induced gene signature was NUPR1, which is found in the M. leprae-induced cell fate pathways. The induction of NUPR1 by M. leprae was dependent on the production of the type I interferon (IFN), IFN-β. Furthermore, NUPR1 mRNA and protein were upregulated in the skin lesions from patients with the multibacillary form of leprosy. Together, these data indicate that M. leprae induces a cell fate program which includes NUPR1 as part of the host response in the progressive form of leprosy.
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Affiliation(s)
- Priscila R. Andrade
- Division of Dermatology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, United States of America
| | - Manali Mehta
- Division of Dermatology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, United States of America
| | - Jing Lu
- Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, Los Angeles, California, United States of America
| | - Rosane M. B. Teles
- Division of Dermatology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, United States of America
| | - Dennis Montoya
- Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, Los Angeles, California, United States of America
| | - Phillip O. Scumpia
- Division of Dermatology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, United States of America
| | | | - Maria Teresa Ochoa
- Department of Dermatology, University of Southern California School of Medicine, Los Angeles, California, United States of America
| | - Feiyang Ma
- Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, Los Angeles, California, United States of America
| | - Matteo Pellegrini
- Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, Los Angeles, California, United States of America
| | - Robert L. Modlin
- Division of Dermatology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, United States of America
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, Los Angeles, California, United States of America
- * E-mail:
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Singh P, Kumar M, Al Khodor S. Vitamin D Deficiency in the Gulf Cooperation Council: Exploring the Triad of Genetic Predisposition, the Gut Microbiome and the Immune System. Front Immunol 2019; 10:1042. [PMID: 31134092 PMCID: PMC6524467 DOI: 10.3389/fimmu.2019.01042] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Accepted: 04/24/2019] [Indexed: 02/06/2023] Open
Abstract
Vitamin D is a fat soluble secosteroid that is primarily synthesized in the skin upon exposure to Ultraviolet B (UVB) sun rays. Vitamin D is essential for the growth and development of bones and helps in reducing inflammation by strengthening muscles and the immune system. Despite the endless supply of sunlight in the Gulf Cooperation Council (GCC) countries which includes United Arab Emirates, Qatar, Kuwait, Bahrain, Saudi Arabia, and Oman, Vitamin D deficiency in the (GCC) general population at various age groups remains alarmingly high. In parallel runs the increasing prevalence of acute and chronic illnesses including, autoimmune diseases, cancer, type 1 diabetes mellitus, cardiovascular disease and Inflammatory bowel disease in the adult as well as the pediatric population of these countries. The exact association between Vitamin D deficiency and chronic disease conditions remains unclear; however, studies have focused on the mechanism of Vitamin D regulation by assessing the role of the Vitamin D associated genes/proteins such as VDR (Vitamin D receptor), VDBP (Vitamin D Binding protein), CYP27B1 as these are integral parts of the Vitamin D signaling pathway. VDR is known to regulate the expression of more than 200 genes across a wide array of tissues in the human body and may play a role in controlling the Vitamin D levels. Moreover, reduced Vitamin D level and downregulation of VDR have been linked to gut dysbiosis, highlighting an intriguing role for the gut microbiome in the Vitamin D metabolism. However, this role is not fully described yet. In this review, we aim to expand our understanding of the causes of Vitamin D deficiency in the GCC countries and explore the potential relationship between the genetic predisposition, Vitamin D levels, immune system and the gut microbiome composition. Trying to unravel this complex interaction may aid in understanding the mechanism by which Vitamin D contributes to various disease conditions and will pave the way toward new therapeutics treatments for Vitamin D deficiency and its associated outcomes.
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Affiliation(s)
- Parul Singh
- Research Department, Sidra Medicine, Doha, Qatar
| | - Manoj Kumar
- Research Department, Sidra Medicine, Doha, Qatar
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Fiske CT, Blackman A, Maruri F, Rebeiro PF, Huaman M, Kator J, Scott Algood HM, Sterling TR. Increased vitamin D receptor expression from macrophages after stimulation with M. tuberculosis among persons who have recovered from extrapulmonary tuberculosis. BMC Infect Dis 2019; 19:366. [PMID: 31039752 PMCID: PMC6492421 DOI: 10.1186/s12879-019-3958-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 04/08/2019] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Independent of HIV infection, extrapulmonary TB (EPTB) risk is increased in women, persons of black race or foreign birth, and by genetic variants in vitamin D receptor (VDR), interleukin-1 beta (IL-1β), and toll-like receptor (TLR)-2; functional correlates are unclear. We evaluated macrophage expression of VDR, TLR2, cathelicidin, and TNF-α, and production of IL-1β in HIV-seronegative persons with previous EPTB, previous pulmonary TB, latent M. tuberculosis infection, and uninfected TB contacts. Persons with previous pleural TB were excluded due to enhanced immune responses at the site of disease. METHODS Macrophages were stimulated with TLR-2 agonist M. tuberculosis lipoprotein (LpqH), live and gamma-irradiated M. tuberculosis. RESULTS M. tuberculosis - infected macrophages from persons with previous EPTB had increased VDR expression (29.17 relative value unit increase in median expression vs. uninfected contacts, after adjusting for foreign-born status; P = 0.02). Macrophages from persons with previous EPTB had a 38.88 μg/mL increase in median IL-1β production after stimulation with LpqH compared to uninfected contacts (P = 0.01); the effect was similar (44.99 μg/mL) but not statistically significant after controlling for foreign-born status. Median 25-hydroxyvitamin D levels were low but not significantly different between groups. CONCLUSIONS There was increased macrophage expression of VDR after stimulation with live M. tuberculosis in persons with previous extrapulmonary TB. If post-treatment VDR expression reflects expression prior to disease, it may identify persons at risk for extrapulmonary TB.
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Affiliation(s)
- Christina T Fiske
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, A2209 Medical Center North, 1161 21st Avenue South, Nashville, TN, 37232, USA. .,Vanderbilt Tuberculosis Center, Vanderbilt University Medical Center, A2209 Medical Center North, 1161 21st Avenue South, Nashville, TN, 37232, USA.
| | - Amondrea Blackman
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, A2209 Medical Center North, 1161 21st Avenue South, Nashville, TN, 37232, USA.,Vanderbilt Tuberculosis Center, Vanderbilt University Medical Center, A2209 Medical Center North, 1161 21st Avenue South, Nashville, TN, 37232, USA
| | - Fernanda Maruri
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, A2209 Medical Center North, 1161 21st Avenue South, Nashville, TN, 37232, USA.,Vanderbilt Tuberculosis Center, Vanderbilt University Medical Center, A2209 Medical Center North, 1161 21st Avenue South, Nashville, TN, 37232, USA
| | - Peter F Rebeiro
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, A2209 Medical Center North, 1161 21st Avenue South, Nashville, TN, 37232, USA.,Vanderbilt Tuberculosis Center, Vanderbilt University Medical Center, A2209 Medical Center North, 1161 21st Avenue South, Nashville, TN, 37232, USA.,Division of Epidemiology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Moises Huaman
- Department of Internal Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Jamie Kator
- University of Maryland School of Medicine, Baltimore, MD, USA
| | - Holly M Scott Algood
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, A2209 Medical Center North, 1161 21st Avenue South, Nashville, TN, 37232, USA.,Vanderbilt Tuberculosis Center, Vanderbilt University Medical Center, A2209 Medical Center North, 1161 21st Avenue South, Nashville, TN, 37232, USA.,Department of Veteran's Affairs, Tennessee Valley Health Systems, Nashville, TN, USA
| | - Timothy R Sterling
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, A2209 Medical Center North, 1161 21st Avenue South, Nashville, TN, 37232, USA.,Vanderbilt Tuberculosis Center, Vanderbilt University Medical Center, A2209 Medical Center North, 1161 21st Avenue South, Nashville, TN, 37232, USA
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Leopold Wager CM, Arnett E, Schlesinger LS. Mycobacterium tuberculosis and macrophage nuclear receptors: What we do and don't know. Tuberculosis (Edinb) 2019; 116S:S98-S106. [PMID: 31060958 DOI: 10.1016/j.tube.2019.04.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 10/12/2018] [Indexed: 01/08/2023]
Abstract
Nuclear receptors (NRs) are ligand-activated transcription factors that are expressed in a wide variety of cells and play a major role in lipid signaling. NRs are key regulators of immune and metabolic functions in macrophages and are linked to macrophage responses to microbial pathogens. Pathogens are also known to induce the expression of specific NRs to promote their own survival. In this review, we focus on the NRs recently shown to influence macrophage responses to Mycobacterium tuberculosis (M.tb), a significant cause of morbidity and mortality worldwide. We provide an overview of NR-controlled transcriptional activity and regulation of macrophage activation. We also discuss in detail the contribution of specific NRs to macrophage responses to M.tb, including influence on macrophage phenotype, cell signaling, and cellular metabolism. We pay particular attention to PPARγ since it is required for differentiation of alveolar macrophages, an important niche for M.tb, and its role during M.tb infection is becoming increasingly appreciated. Research into NRs and M.tb is still in its early stages, therefore continuing to advance our understanding of the complex interactions between M.tb and macrophage NRs may reveal the potential of NRs as pharmacological targets for the treatment of tuberculosis.
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Olmos-Ortiz A, García-Quiroz J, Halhali A, Avila E, Zaga-Clavellina V, Chavira-Ramírez R, García-Becerra R, Caldiño-Soto F, Larrea F, Díaz L. Negative correlation between testosterone and TNF-α in umbilical cord serum favors a weakened immune milieu in the human male fetoplacental unit. J Steroid Biochem Mol Biol 2019; 186:154-160. [PMID: 30359690 DOI: 10.1016/j.jsbmb.2018.10.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 09/10/2018] [Accepted: 10/18/2018] [Indexed: 12/27/2022]
Abstract
Clinical and epidemiological evidence supports that pregnancies carrying a male fetus are more vulnerable to infections and preterm birth, probably due to testosterone immunosuppressive properties. In human placentas, testosterone lowers the expression of CYP27B1, the vitamin D (VD)-activating enzyme, diminishing cathelicidin synthesis, a potent VD-dependent antimicrobial peptide (AMP). VD also stimulates other AMPs, including defensins. To get insights into the increased male vulnerability mechanisms, we investigated the relationship between fetal sex and the immunoendocrine milieu at the fetoplacental unit. For this, umbilical vein serum and placental samples were collected from healthy newborns. In males' serum, testosterone levels were significantly higher and negatively associated with TNF-α, a cytokine that strengthens the immune response. Males showed lower serum TNF-α and increased levels and gene expression of the immunosuppressive cytokine IL-10. Only in female samples there was a positive association (P < 0.05) between AMPs and both TNF-α and CYP27B1 and between 25-hydroxyvitamin D3 and IL-1β serum levels. Accordingly, VD-metabolites (25-hydroxyvitamin D3, calcitriol) significantly stimulated IL-1β gene expression in cultured trophoblasts. Interestingly, IL-1β mRNA correlated positively with defensins (P < 0.05) in males, but not with cathelicidin expression, which was significantly diminished in comparison to females. Our data suggest that high umbilical serum testosterone and IL-10 in males could explain reduced TNF-α levels and lack of association between VD-dependent innate immunity markers and proinflammatory cytokines expression in the fetoplacental unit. Altogether, our observations imply a restricted basal immune milieu in males compared to females, which may help understand the higher male susceptibility to adverse perinatal outcomes.
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Affiliation(s)
- Andrea Olmos-Ortiz
- Departamento de Biología de la Reproducción Dr. Carlos Gual Castro, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga No. 15, Belisario Domínguez Sección XVI, C.P. 14080, Ciudad de México, Mexico; Departamento de Inmunobioquímica, Instituto Nacional de Perinatología Isidro Espinosa de los Reyes, Montes Urales No. 800, Lomas de Virreyes, C.P. 11000, Ciudad de México, Mexico
| | - Janice García-Quiroz
- Departamento de Biología de la Reproducción Dr. Carlos Gual Castro, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga No. 15, Belisario Domínguez Sección XVI, C.P. 14080, Ciudad de México, Mexico
| | - Ali Halhali
- Departamento de Biología de la Reproducción Dr. Carlos Gual Castro, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga No. 15, Belisario Domínguez Sección XVI, C.P. 14080, Ciudad de México, Mexico
| | - Euclides Avila
- Departamento de Biología de la Reproducción Dr. Carlos Gual Castro, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga No. 15, Belisario Domínguez Sección XVI, C.P. 14080, Ciudad de México, Mexico
| | - Verónica Zaga-Clavellina
- Departamento de Inmunobioquímica, Instituto Nacional de Perinatología Isidro Espinosa de los Reyes, Montes Urales No. 800, Lomas de Virreyes, C.P. 11000, Ciudad de México, Mexico
| | - Roberto Chavira-Ramírez
- Departamento de Biología de la Reproducción Dr. Carlos Gual Castro, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga No. 15, Belisario Domínguez Sección XVI, C.P. 14080, Ciudad de México, Mexico
| | - Rocío García-Becerra
- Departamento de Biología de la Reproducción Dr. Carlos Gual Castro, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga No. 15, Belisario Domínguez Sección XVI, C.P. 14080, Ciudad de México, Mexico; Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. Ciudad Universitaria 3000, Coyoacán 04360, Ciudad de México, Mexico
| | - Felipe Caldiño-Soto
- Jefatura de UTQ, UMAE Hospital de Gineco Obstetricia No. 4 "Luis Castelazo Ayala", IMSS, Av. Río Magdalena No. 289, Tizapán San Angel, C.P. 01090, Ciudad de México, Mexico
| | - Fernando Larrea
- Departamento de Biología de la Reproducción Dr. Carlos Gual Castro, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga No. 15, Belisario Domínguez Sección XVI, C.P. 14080, Ciudad de México, Mexico
| | - Lorenza Díaz
- Departamento de Biología de la Reproducción Dr. Carlos Gual Castro, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Vasco de Quiroga No. 15, Belisario Domínguez Sección XVI, C.P. 14080, Ciudad de México, Mexico.
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Chun RF, Shieh A, Gottlieb C, Yacoubian V, Wang J, Hewison M, Adams JS. Vitamin D Binding Protein and the Biological Activity of Vitamin D. Front Endocrinol (Lausanne) 2019; 10:718. [PMID: 31708871 PMCID: PMC6821678 DOI: 10.3389/fendo.2019.00718] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 10/04/2019] [Indexed: 12/15/2022] Open
Abstract
Vitamin D has a long-established role in bone health. In the last two decades, there has been a dramatic resurgence in research interest in vitamin D due to studies that have shown its possible benefits for non-skeletal health. Underpinning the renewed interest in vitamin D was the identification of the vital role of intracrine or localized, tissue-specific, conversion of inactive pro-hormone 25-hydroxyvitamin D [25(OH)D] to active 1,25-dihydroxyvitamin D [1,25(OH)2D]. This intracrine mechanism is the likely driving force behind vitamin D action resulting in positive effects on human health. To fully capture the effect of this localized, tissue-specific conversion to 1,25(OH)2D, adequate 25(OH)D would be required. As such, low serum concentrations of 25(OH)D would compromise intracrine generation of 1,25(OH)2D within target tissues. Consistent with this is the observation that all adverse human health consequences of vitamin D deficiency are associated with a low serum 25(OH)D level and not with low 1,25(OH)2D concentrations. Thus, clinical investigators have sought to define what concentration of serum 25(OH)D constitutes adequate vitamin D status. However, since 25(OH)D is transported in serum bound primarily to vitamin D binding protein (DBP) and secondarily to albumin, is the total 25(OH)D (bound plus free) or the unbound free 25(OH)D the crucial determinant of the non-classical actions of vitamin D? While DBP-bound-25(OH)D is important for renal handling of 25(OH)D and endocrine synthesis of 1,25(OH)2D, how does DBP impact extra-renal synthesis of 1,25(OH)2D and subsequent 1,25(OH)2D actions? Are their pathophysiological contexts where total 25(OH)D and free 25(OH)D would diverge in value as a marker of vitamin D status? This review aims to introduce and discuss the concept of free 25(OH)D, the molecular biology and biochemistry of vitamin D and DBP that provides the context for free 25(OH)D, and surveys in vitro, animal, and human studies taking free 25(OH)D into consideration.
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Affiliation(s)
- Rene F. Chun
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
- *Correspondence: Rene F. Chun
| | - Albert Shieh
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Carter Gottlieb
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Vahe Yacoubian
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Jeffrey Wang
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Martin Hewison
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, United Kingdom
| | - John S. Adams
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
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Gough M, May E. In Silico Model of Vitamin D 3 Dependent NADPH Oxidase Complex Activation During Mycobacterium Infection. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2018; 2018:2382-2385. [PMID: 30440886 DOI: 10.1109/embc.2018.8512889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Mycobacterium tuberculosis (Mtb) is a highly infectious aerosolizable bacterium, which causes upward of 1.5 million deaths per year. Alveolar macrophages, the primary defense cell of the lung, are the preferred host cell of this intracellular bacterium. Vitamin D3 is a known transcription factor, modulating the transcription of pro- and anti-inflammatory cytokines and immunologically relevant proteins. In a vitamin D3 deficient host, the immune systems response to infection is greatly impaired. We used a quantitative systems biology approach to model the impact of long-term vitamin D3 deficiency on macrophage effector response. We then compared our simulation output to our in vitro model of mycobacterium infection of macrophages from vitamin D3 supplemented hosts. Our in silico model results agreed with in vitro levels of hydrogen peroxide (H2O2) production, an antimicrobial effector molecule produced by the host's macrophage, known to be modulated indirectly by vitamin D3. The current model will provide a foundation for further studies into the effects of micronutrient deficiency on immune response.
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Vitamin D: Nutrient, Hormone, and Immunomodulator. Nutrients 2018; 10:nu10111656. [PMID: 30400332 PMCID: PMC6266123 DOI: 10.3390/nu10111656] [Citation(s) in RCA: 405] [Impact Index Per Article: 67.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 10/24/2018] [Accepted: 10/31/2018] [Indexed: 12/15/2022] Open
Abstract
The classical functions of vitamin D are to regulate calcium-phosphorus homeostasis and control bone metabolism. However, vitamin D deficiency has been reported in several chronic conditions associated with increased inflammation and deregulation of the immune system, such as diabetes, asthma, and rheumatoid arthritis. These observations, together with experimental studies, suggest a critical role for vitamin D in the modulation of immune function. This leads to the hypothesis of a disease-specific alteration of vitamin D metabolism and reinforces the role of vitamin D in maintaining a healthy immune system. Two key observations validate this important non-classical action of vitamin D: first, vitamin D receptor (VDR) is expressed by the majority of immune cells, including B and T lymphocytes, monocytes, macrophages, and dendritic cells; second, there is an active vitamin D metabolism by immune cells that is able to locally convert 25(OH)D3 into 1,25(OH)2D3, its active form. Vitamin D and VDR signaling together have a suppressive role on autoimmunity and an anti-inflammatory effect, promoting dendritic cell and regulatory T-cell differentiation and reducing T helper Th 17 cell response and inflammatory cytokines secretion. This review summarizes experimental data and clinical observations on the potential immunomodulating properties of vitamin D.
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Abstract
Tuberculosis (TB), which is primarily caused by the major etiologic agent Mycobacterium tuberculosis (Mtb), remains a serious infectious disease worldwide. Recently, much effort has been made to develop novel/improved therapies by modulating host responses to TB (i.e., host-directed therapy). Autophagy is an intracellular catabolic process that helps maintain homeostasis or the removal of invading pathogens via a lysosomal degradation process. The activation of autophagy by diverse drugs or agents may represent a promising treatment strategy against Mtb infection, even to drug-resistant strains. Important mediators of autophagy activation include vitamin D receptor signaling, the AMP-activated protein kinase pathway, sirtuin 1 activation, and nuclear receptors. High-throughput approaches have identified numerous natural and synthetic compounds that enhance antimicrobial defense against Mtb infection through autophagy. In this review, we discuss the current knowledge of, advancements in, and perspectives on new therapeutic strategies targeting autophagy against TB. Understanding the mechanisms and key players involved in modulating antibacterial autophagy will provide innovative improvements in anti-TB therapy via an autophagy-targeting approach. Abbreviations: TB: Tuberculosis; Mtb: Mycobacterium tuberculosis; HDT: host-directed therapy; MDR: multidrug resistant; XDR: extensively drug resistant; LAP: LC3-associated phagocytosis; ROS: reactive oxygen species; VDR: vitamin D receptor; TFEB: transcription factor EB; ERRα: estrogen-related receptor α; PGC1α: PPARγ coactivator-1 α
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Affiliation(s)
- Seungwha Paik
- a Department of Microbiology and Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea
| | - Jin Kyung Kim
- a Department of Microbiology and Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea
| | - Chaeuk Chung
- c Division of Pulmonary and Critical Care, Department of Internal Medicine , Chungnam National University School of Medicine , Daejeon , Korea
| | - Eun-Kyeong Jo
- a Department of Microbiology and Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea
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