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Tripathy AS, Wagh P, Akolkar K, Walimbe AM, Potdar VA, Choudhary ML, Kadgi N, Nakate L, Abraham P. Association of inhibitory NKG2A and activating NKG2D natural killer cell receptor genes with resistance to SARS-CoV-2 infection in a western Indian population. Arch Virol 2023; 168:237. [PMID: 37653112 DOI: 10.1007/s00705-023-05861-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 07/17/2023] [Indexed: 09/02/2023]
Abstract
We have evaluated the association of polymorphisms in the intronic variable-number tandem repeat (VNTR) regions of the human NKG2D, NKG2A, and IL-1RN genes with resistance and/or susceptibility to SARS-CoV-2 infection in a total of 209 patients with SARS-CoV-2 infection (125 asymptomatic patients and 84 symptomatic patients with mild symptoms) and 355 healthy controls, using the PCR-RFLP method. The genotypic and allelic frequency distributions for an IL-1RN (VNTR) single-nucleotide polymorphism (SNP) were found to be comparable among the patient groups. Overall, in SARS-CoV-2 patients, NKG2A (rs2734440) showed a protective association in the codominant [(A/A vs. A/G): (OR = 0.53, 95% CI = 0.34-0.83, p = 0.006)], recessive [(A/A vs. A/G+G/G): (OR = 0.6, 95% CI = 0.39-0.92, p = 0.02)] and over-dominant [(A/A+G/G vs. A/G): (OR = 0.57, 95% CI = 0.38-0.84, p = 0.005)] models. Similarly, NKG2D (rs7980470) showed a protective association in the codominant [(A/A vs. A/G): (OR = 0.46, 95% CI = 0.3-0.7, p = 0.0003), codominant (A/A vs. G/G): (OR = 0.54, 95% CI = 0.31-0.71, p = 0.027)], recessive [(A/A vs. A/G+G/G): (OR = 0.47, 95% CI = 0.32-0.7, p = 0.0001) and over-dominant [(A/A+G/G vs. A/G): (OR = 0.56, 95% CI = 0.38-0.82, p = 0.003)] models. At the allelic level, there was a higher frequency of the "G" allele of NKG2D (rs7980470) in healthy controls than in patients with SARS-CoV-2 infection, suggesting that individuals with the "G" allele in the intronic region of NKG2D are likely to be protected against SARS-CoV-2 infection. Overall, our data suggest that polymorphisms in the host NKG2D and NKG2A genes have a protective role in SARS-CoV-2 infection, although the functional impact of these polymorphisms on control of SARS-CoV-2 infection remains unknown.
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Affiliation(s)
- Anuradha S Tripathy
- Department of Dengue and Chikungunya, Indian Council of Medical Research-National Institute of Virology, 20-A, Dr Ambedkar Road, Pune, Maharashtra, 411 001, India.
| | - Priyanka Wagh
- Department of Dengue and Chikungunya, Indian Council of Medical Research-National Institute of Virology, 20-A, Dr Ambedkar Road, Pune, Maharashtra, 411 001, India
| | - Kadambari Akolkar
- Department of Dengue and Chikungunya, Indian Council of Medical Research-National Institute of Virology, 20-A, Dr Ambedkar Road, Pune, Maharashtra, 411 001, India
| | - Atul M Walimbe
- Department of Dengue and Chikungunya, Indian Council of Medical Research-National Institute of Virology, 20-A, Dr Ambedkar Road, Pune, Maharashtra, 411 001, India
| | - Varsha A Potdar
- Department of Dengue and Chikungunya, Indian Council of Medical Research-National Institute of Virology, 20-A, Dr Ambedkar Road, Pune, Maharashtra, 411 001, India
| | - Manohar Lal Choudhary
- Department of Dengue and Chikungunya, Indian Council of Medical Research-National Institute of Virology, 20-A, Dr Ambedkar Road, Pune, Maharashtra, 411 001, India
| | - Nalini Kadgi
- BJMC and Sassoon General Hospital, Pune, Maharashtra, India
| | - Leena Nakate
- BJMC and Sassoon General Hospital, Pune, Maharashtra, India
| | - Priya Abraham
- Department of Dengue and Chikungunya, Indian Council of Medical Research-National Institute of Virology, 20-A, Dr Ambedkar Road, Pune, Maharashtra, 411 001, India
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Abo-Amer YEE, Mohamed AA, Elhoseeny MM, Rezk SM, Abdel-Salam S, Alrohaimi AH, Abdelgeliel AS, Alzahrani SS, Jafri I, Alqahtani LS, Fayad E, Fakhry M, Soliman MY. Association Between Vitamin D Receptor Polymorphism and the Response to Helicobacter Pylori Treatment. Infect Drug Resist 2023; 16:4463-4469. [PMID: 37449247 PMCID: PMC10337687 DOI: 10.2147/idr.s414186] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 06/10/2023] [Indexed: 07/18/2023] Open
Abstract
Background & Aims This research aimed to determine how variations in the vitamin D receptor gene affected the response of H. pylori infections to eradication therapy. Patients and Methods On 105 adult H. Pylori-positive patients, a prospective cohort study was carried out. PCR was used to genotype all patients' VDR gene polymorphisms. The patients in the study received standard triple eradication medication (clarithromycin 500 mg, amoxicillin 1000 mg, and omeprazole 20 mg) twice daily for 14 days. A stool test for H. pylori Ag was conducted 4 weeks following the end of treatment. Results In our study, the usual triple therapy's H. pylori eradication rate was 75.2%. The successful eradication of H. pylori and VDR rs 2228570 gene polymorphisms was more prevalent in CT gene polymorphism (64.6%) compared to non-responders (19.2%), while treatment failure was more prevalent in CC gene polymorphism (73.1% in non-responders compared to responders 24.1%), which is statistically significant. In regards to the eradication of H. pylori and VDR rs7975232 gene polymorphisms, the success of eradication was more prevalent in AC gene polymorphism (54.4%) vs non-responders (30.4%), while all patients (14) with gene AA (17.7%) are responders to standard treatment, while the failure of treatment was more prevalent in CC gene polymorphism (69.2% in non-responder vs 27.8% in responders) which is statistically significant. Our findings demonstrated a strong correlation between patients' responses to H. pylori treatment and polymorphisms in the VDR gene (ApaI and TaqI) (P 0.05). Conclusion As far as we are aware, this is the first study to identify a potential link between the FokI and Apal VDR polymorphism and treatment response in H pylori-positive patients. To evaluate the findings, more research with larger number of patients and different population is required.
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Affiliation(s)
| | - Amal Ahmed Mohamed
- National Hepatology & Tropical Medicine Research Institute, Department of Biochemistry, Cairo, Egypt
| | | | - Samar M Rezk
- Department of Clinical Nutrition, Mahalla Hepatology Teaching Hospital, El-Mahalla El-Kubra, Elgharbia, Egypt
| | - Sherief Abdel-Salam
- Department of Tropical Medicine, Hepatology & Gastroenterology Unit, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Abdulmohsen H Alrohaimi
- Department of Pharmacy Practice, College of Pharmacy, Shaqra University, Shaqra, 11961, Saudi Arabia
| | - Asmaa Sayed Abdelgeliel
- Department of Botany & Microbiology, Faculty of Science, South Valley University, Qena, 83523, Egypt
| | - Seham Saeed Alzahrani
- Department of Biotechnology, College of Science, Taif University, Taif, 21944, Saudi Arabia
| | - Ibrahim Jafri
- Department of Biotechnology, College of Science, Taif University, Taif, 21944, Saudi Arabia
| | - Leena S Alqahtani
- Department of Biochemistry, College of Science, University of Jeddah, Jeddah, 23445, Saudi Arabia
| | - Eman Fayad
- Department of Biotechnology, College of Science, Taif University, Taif, 21944, Saudi Arabia
| | - Mohamed Fakhry
- Department of Gastroenterology, Hepatology and Infectious Diseases, Faculty of Medicine, Al-Azhar University, Asyut, Egypt
| | - Moataz Yousry Soliman
- Department of Hepatology, Gastroenterology and Infectious Diseases, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
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Protas VV, Pogossyan GP, Li KG, Zhumina AG, Bisseneva AK, Shaikina DN. Plasma 25-Hydroxyvitamin D Level and VDR Gene Single Nucleotide Polymorphism rs2228570 Influence on COVID-19 Susceptibility among the Kazakh Ethnic Group-A Pilot Study. Nutrients 2023; 15:1781. [PMID: 37049620 PMCID: PMC10097393 DOI: 10.3390/nu15071781] [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: 03/06/2023] [Revised: 03/31/2023] [Accepted: 04/04/2023] [Indexed: 04/08/2023] Open
Abstract
Low plasma levels of the vitamin D metabolite 25-hydroxyvitamin D [25(OH)D] and the vitamin D receptor (VDR) gene single nucleotide polymorphisms (SNPs) have been associated with the body's susceptibility to infectious diseases, including COVID-19. In this pilot retrospective study, representatives of the Kazakh population (central Kazakhstan) were divided into groups based on the test for IgM and IgG for coronavirus infection. We compared the 25(OH)D plasma levels and concluded that the COVID-19-positive group values (25.17 ng/mL ± 16.65) were statistically lower (p = 0.0114) compared to the COVID-19-negative ones (35.58 ng/mL ± 20.67). There was no association between age, gender and 25(OH)D concentration within the groups (p > 0.05). The genotyping of rs2228570 was performed using a TaqMan Real-Time PCR assay. Allele C predominated among the COVID-19-negative participants and significantly reduced the likelihood of coronavirus infection (p < 0.0001; OR = 0.0804; 95% CI 0.02357-0.2798). There were no statistically significant differences in the frequencies of the A, G and T alleles in the studied groups (p > 0.05). The GG genotype of rs2228570 was associated with a 4.131-fold increased likelihood of COVID-19 infection (p = 0.0288; χ2 = 5.364; OR = 4.131; 95% CI 1.223-13.71). Comprehensive studies are required to determine whether low 25(OH)D plasma concentrations and genetic background represent a risk factor for COVID-19 infection.
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Affiliation(s)
- Valeriya V. Protas
- Department of Botany, Karaganda Buketov University, Karaganda 100028, Kazakhstan
| | - Gayane P. Pogossyan
- Department of Botany, Karaganda Buketov University, Karaganda 100028, Kazakhstan
| | - Konstantin G. Li
- Biotechnology and Eco-Monitoring Research Park, Karaganda Buketov University, Karaganda 100028, Kazakhstan
| | - Assel G. Zhumina
- Department of Botany, Karaganda Buketov University, Karaganda 100028, Kazakhstan
| | - Anar K. Bisseneva
- Department of Botany, Karaganda Buketov University, Karaganda 100028, Kazakhstan
| | - Dinara N. Shaikina
- Department of Biology, Non-Profit Limited Company “Manash Kozybayev North Kazakhstan University”, Petropavlovsk 150000, Kazakhstan
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Iqtadar S, Khan A, Mumtaz SU, Livingstone S, Chaudhry MNA, Raza N, Zahra M, Abaidullah S. Vitamin D Deficiency (VDD) and Susceptibility towards Severe Dengue Fever-A Prospective Cross-Sectional Study of Hospitalized Dengue Fever Patients from Lahore, Pakistan. Trop Med Infect Dis 2023; 8:tropicalmed8010043. [PMID: 36668950 PMCID: PMC9866117 DOI: 10.3390/tropicalmed8010043] [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: 11/23/2022] [Revised: 12/19/2022] [Accepted: 12/30/2022] [Indexed: 01/09/2023] Open
Abstract
Dengue is a mosquito-borne flaviviral serious febrile illness, most common in the tropical and subtropical regions including Pakistan. Vitamin D is a strong immunomodulator affecting both the innate and adaptive immune responses and plays a pivotal role in pathogen-defense mechanisms. There has been considerable interest in the possible role of vitamin D in dengue viral (DENV) infection. In the present prospective cross-sectional study, we assessed a possible association between serum vitamin D deficiency (VDD) and susceptibility towards severe dengue fever (DF) illness. Serum vitamin D levels were measured at the time of hospitalization in 97 patients diagnosed with dengue fever (DF), dengue hemorrhagic fever (DHF) or dengue shock syndrome (DSS) at Mayo Hospital, King Edward Medical University, Lahore, PK, from 16 November 2021 to 15 January 2022. In terms of disease severity, 37 (38.1%) patients were DF, 52 (53.6%) were DHF grade 1 and 2, and 8 (8.2%) were DSS. The results revealed that most patients (75 (77.3%)) were vitamin-D-deficient (i.e., serum level < 20 ng/mL), including 27 (73.0%) in DF, 41 (78.8%) in DHF grade 1 and 2, and 7 (87.5%) in DSS. The degree of VDD was somewhat higher in DSS patients as compared to DF and DHF grade 1 and 2 patients. Overall, serum vitamin D levels ranged from 4.2 to 109.7 ng/mL, and the median (IQR) was in the VDD range, i.e., 12.2 (9.1, 17.8) ng/mL. Our results suggest that there may be a possible association between VDD and susceptibility towards severe dengue illness. Hence, maintaining sufficient vitamin D levels in the body either through diet or supplementation may help provide adequate immune protection against severe dengue fever illness. Further research is warranted.
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Affiliation(s)
- Somia Iqtadar
- Department of Medicine, King Edward Medical University, Lahore 54000, Pakistan
| | - Amjad Khan
- Nuffield Division of Clinical Laboratory Sciences, Radcliffe Department of Medicine, John Radcliffe Hospital, University of Oxford, Headley Way, Oxford OX3 9DU, UK
- Correspondence:
| | - Sami Ullah Mumtaz
- Department of Medicine, King Edward Medical University, Lahore 54000, Pakistan
| | - Shona Livingstone
- School of Medicine, University of Dundee, Ninewells Hospital, Dundee DD1 9SY, UK
| | | | - Nauman Raza
- Department of Medicine, King Edward Medical University, Lahore 54000, Pakistan
| | - Mehreen Zahra
- Department of Medicine, King Edward Medical University, Lahore 54000, Pakistan
| | - Sajid Abaidullah
- Department of Medicine, King Edward Medical University, Lahore 54000, Pakistan
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Shaheen I, Afifi R, Abulata N, Aboukhalil R, Meligy B, Algebaly HF, Abd El Dayem OY. Vitamin D receptor polymorphisms and vitamin D insufficiency are not associated with sepsis in critically ill children: a case-control study. EGYPTIAN PEDIATRIC ASSOCIATION GAZETTE 2022. [DOI: 10.1186/s43054-022-00130-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Abstract
Background
Vitamin D is a fat-soluble vitamin that regulates calcium and phosphorous homeostasis to maintain a healthy mineralized skeleton. It can also influence immune responses and has immunomodulatory properties. Vitamin D receptor (VDR) is a nuclear receptor that mediates the activities of the hormonal form of vitamin D. VDR polymorphisms can alter immunity and susceptibility to infections by modulating VDR expression and vitamin D activity. This study aimed to investigate the levels of serum vitamin D as well as four VDR polymorphisms: FokI, BsmI, ApaI, and TaqI in fifty children admitted to intensive care unit (ICU) with a diagnosis of sepsis and one-hundred age- and sex-matched healthy children.
Methods
Vitamin D levels were measured in serum, in both patients and controls, using an enzyme-linked immunosorbent assay (ELISA) approach. VDR polymorphisms were also studied in both groups using specific restriction enzymes.
Results
Vitamin D levels were low in both patients and controls. Moreover, serum levels were unaffected by VDR polymorphisms, and their distribution was similar in both groups. Neither the need for mechanical ventilation or inotropic treatment nor the sepsis outcome was impacted by serum vitamin D levels or VDR polymorphisms.
Conclusion
In children admitted to pediatric ICU, neither vitamin D levels nor VDR polymorphisms were associated with sepsis. Further larger studies including different types of sepsis are recommended.
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CORRELATION OF PREVALENCE OF THE CORONAVIRUS DISEASE 2019 (2019- nCoV) WITH THE POLYMORPHISMS AT rs7975232 (ApaI) AND rs731236 (TaqI) AMONG 26 POPULATIONS. ANADOLU KLINIĞI TIP BILIMLERI DERGISI 2021. [DOI: 10.21673/anadoluklin.987578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Singh AK, Prakash S, Garg RK, Jain P, Kumar R, Jain A. Polymorphisms in vitamin D receptor, toll-like receptor 2 and Toll-Like receptor 4 genes links with Dengue susceptibility. Bioinformation 2021; 17:506-513. [PMID: 34602778 PMCID: PMC8450152 DOI: 10.6026/97320630017506] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/31/2021] [Accepted: 04/10/2021] [Indexed: 12/03/2022] Open
Abstract
Host genetic factors are known to determine disease susceptibility in dengue virus infection. Therefore, in this study association of gene polymorphisms of Vitamin D Receptor [rs731236 (Taq) and rs7975232 (Apa1)], Toll-like receptor 2 [rs5743708 (Arg735Gln)
and rs5743704 (Pro631His)] and Toll-like receptor 4 [rs4986790A/G(Asp299Gly13843) and rs4986791 C/T(Thr399Ile)] were studied in cases with dengue as compared to controls. Total 98 cases of confirmed dengue virus infection and 98 age, sex and geographically
matched healthy controls were enrolled and their genetic polymorphisms for the above mentioned regions were studied by Sanger sequencing. Mutant genotypes CC of VDR rs731236 (Taq1) [(OR 3.808, p value =0.02, CI 1.160-12.498)], GG of VDR rs7975232 (Apa1) [(OR
3.485, p value =0.02, CI 1.162-10.45)] and heterozygous genotypes of TLR4 rs4986790 A/G Asp299Gly [OR 2.40, p value= 0.02, CI 1.12-5.14], TLR4 rs4986791 C/T Thr399Ile [OR 2.09, p value=0.02, CI 1.12-5.14] were found to be significantly more in cases with dengue
virus infection as compared to the controls. Also, at these positions mutant alleles were observed in significantly higher number of cases than controls. The values for C allele at VDR rs731236 (Taq1) were OR 1.86, p value 0.009, CI 1.162-3.001; for allele G at
rs7975232( Apa1) were OR 2.71, p value 0.006, CI 1.196-2.98 for allele G at TLR4s rs4986790 A/G Asp299Gly were OR 2.35, p value 0.009, CI 1.23-4.50 and for allele T at rs4986791 C/T Thr399Ile were OR 2.36, p value=0.006, CI 1.28-4.38. VDR and TLR4 but not TLR2
gene polymorphisms were found to be associated with dengue susceptibility in Indian population.
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Affiliation(s)
- Arvind Kumar Singh
- Department of Microbiology King George's Medical University, Lucknow, UP, India
| | - Shantanu Prakash
- Department of Microbiology King George's Medical University, Lucknow, UP, India
| | - R K Garg
- Department of Neurology King George's Medical University, Lucknow, UP, India
| | - Parul Jain
- Department of Microbiology King George's Medical University, Lucknow, UP, India
| | - Rashmi Kumar
- Department of Paediatrics King George's Medical University, Lucknow, UP, India
| | - Amita Jain
- Department of Microbiology King George's Medical University, Lucknow, UP, India
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Alagarasu K. Immunomodulatory effect of vitamin D on immune response to dengue virus infection. VITAMINS AND HORMONES 2021; 117:239-252. [PMID: 34420583 DOI: 10.1016/bs.vh.2021.06.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Dengue, an acute febrile illness which in some cases requires hospitalization and occasionally a fatal disease, caused by dengue virus is a potential threat to the public health systems throughout the world. Approved antivirals are not available for treating dengue. Immunomodulators, that can reduce inflammation which if not treated properly results in vascular leakage, are being attempted as therapeutics against severe dengue. Vitamin D, an immunomodulatory hormone, with both antiviral and immunomodulatory effects, is an appropriate choice for investigation as a potential drug against dengue. Investigations of vitamin D levels by many studies have suggested vitamin D levels as a potential marker for predicting severe dengue. In-vitro studies have shown that 1, 25 dihydroxy vitamin D3 (1,25(OH)2D3), active form of vitamin D, can reduce the expression of dengue virus entry receptors, restrict the viral replication and can modulate the expression of inflammatory cytokines in dengue virus infected cells. The results from in-vitro studies also have cautioned that insufficient levels of vitamin D supplementation might increase the virus replication. Available evidence suggests vitamin D based therapeutics against dengue and provides ray of light for treating dengue patients but, the available evidence needs to be supported by beneficial outcomes in clinical trials.
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Affiliation(s)
- K Alagarasu
- Dengue and Chikungunya Group, ICMR-National Institute of Virology, Pune, Maharashtra, India.
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Langerman SD, Ververs M. Micronutrient Supplementation and Clinical Outcomes in Patients with Dengue Fever. Am J Trop Med Hyg 2020; 104:45-51. [PMID: 33258437 PMCID: PMC7790074 DOI: 10.4269/ajtmh.20-0731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Dengue fever (DF) is a viral infection that is common in tropical countries and represents a significant cause of global morbidity and mortality. Despite its prevalence and severity, treatment options for DF remain limited and consist primarily of supportive measures. Several recent studies have concluded that micronutrient supplementation may improve clinical outcomes in patients with DF, but no review has summarized and synthesized these findings. We conducted a literature review to identify articles investigating the effect of micronutrient supplementation on clinical outcomes among patients with DF. We found several studies which indicated that supplemental vitamin C, vitamin D, vitamin E, and zinc may be useful adjuncts in DF treatment. Folic acid supplementation did not appear to affect clinical outcomes. The reviewed studies have significant limitations including small sample sizes and limited data about the baseline nutritional status of study subjects. We identify a need for additional high-quality randomized trials to elucidate the role of micronutrient supplementation in DF treatment.
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Affiliation(s)
| | - Mija Ververs
- Address correspondence to Mija Ververs, Centers for Disease Control and Prevention, 1600 Clifton Rd., Atlanta, GA 30333. E-mail:
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Arpornsuwan M, Arpornsuwan M. A Proposal of Early Diagnosis and Early Management in Dengue Infection and Possible COVID-19. EXPLORATORY RESEARCH AND HYPOTHESIS IN MEDICINE 2020; 000:1-11. [DOI: 10.14218/erhm.2020.00059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Jaratsittisin J, Xu B, Sornjai W, Weng Z, Kuadkitkan A, Li F, Zhou GC, Smith DR. Activity of vitamin D receptor agonists against dengue virus. Sci Rep 2020; 10:10835. [PMID: 32616772 PMCID: PMC7331731 DOI: 10.1038/s41598-020-67783-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 05/11/2020] [Indexed: 12/27/2022] Open
Abstract
Infections with the mosquito-transmitted dengue virus (DENV) are a pressing public health problem in many parts of the world. The recently released commercial vaccine for DENV has encountered some problems, and there is still no effective drug to treat infections. Vitamin D has a well characterized role in calcium and phosphorus homeostasis, but additionally has a role in the immune response to bacterial and viral pathogens. In this study a number of fused bicyclic derivatives of 1H-pyrrolo[1,2]imidazol-1-one with vitamin D receptor (VDR) agonist activity were evaluated for possible anti-DENV activity. The results showed that five of the compounds were able to significantly inhibit DENV infection. The most effective compound, ZD-3, had an EC50 value of 7.47 μM and a selective index of 52.75. The compounds were only effective when used as a post-infection treatment and treatment significantly reduced levels of infection, virus output, DENV protein expression and genome copy number. These results suggest that these VDR agonists have the potential for future development as effective anti-DENV agents.
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Affiliation(s)
| | - Bin Xu
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, 211816, Jiangsu, China
| | - Wannapa Sornjai
- Institute of Molecular Biosciences, Mahidol University, Salaya, 73170, Thailand
| | - Zhibing Weng
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, 211816, Jiangsu, China
| | - Atichat Kuadkitkan
- Institute of Molecular Biosciences, Mahidol University, Salaya, 73170, Thailand
| | - Feng Li
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, 211816, Jiangsu, China
| | - Guo-Chun Zhou
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, 211816, Jiangsu, China.
| | - Duncan R Smith
- Institute of Molecular Biosciences, Mahidol University, Salaya, 73170, Thailand.
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Li YP, Deng HL, Wang WJ, Wang MQ, Li M, Zhang YF, Wang J, Dang SS. Vitamin D receptor gene methylation in patients with hand, foot, and mouth disease caused by enterovirus 71. Arch Virol 2020; 165:1979-1985. [PMID: 32556549 DOI: 10.1007/s00705-020-04701-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 05/14/2020] [Indexed: 01/07/2023]
Abstract
To evaluate the epigenetic regulation of the VDR gene in enterovirus 71 (EV71)-associated severe hand, foot, and mouth disease (HFMD), a total of 116 patients with EV71-HFMD, including 58 with mild EV71-HFMD and 58 with severe EV71-HFMD, as well as 60 healthy controls, were enrolled in this study. Quantitative real-time PCR was used to measure the relative levels of VDR mRNA expression, and the methylation status of the VDR promoter was assessed using a MethylTarget™ assay. The DNA methylation levels of the VDR promoter in children with EV71-associated severe HFMD were lower than those in the healthy controls and in children with mild HFMD (P < 0.05). Hypomethylation at CpG site 133 and hypermethylation at the CpG 42 sites and 68 downregulated VDR expression. Moreover, the methylation level of VDR could be used for differential diagnosis of mild and severe EV71-associated HFMD (AUC56, 0.73; AUC68, 0.699; AUC42, 0.694; AUC66, 0.693). VDR expression and promoter methylation were associated with the progression of EV71 infection. Determining the VDR promoter status might help clinicians initiate the appropriate strategy for treatment of EV71-associated HFMD.
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Affiliation(s)
- Ya-Ping Li
- Department of Infectious Diseases, Xi'an Jiaotong University Second Affiliated Hospital, No. 157 Xiwu Road, Xi'an, 710004, China
| | - Hui-Ling Deng
- Department of Infectious Diseases, Xi'an Jiaotong University Second Affiliated Hospital, No. 157 Xiwu Road, Xi'an, 710004, China.,Department of Infectious Diseases, Xi'an Children's Hospital, Xi'an, 710003, China
| | - Wen-Jun Wang
- Department of Infectious Diseases, Xi'an Jiaotong University Second Affiliated Hospital, No. 157 Xiwu Road, Xi'an, 710004, China
| | - Mu-Qi Wang
- Department of Infectious Diseases, Xi'an Jiaotong University Second Affiliated Hospital, No. 157 Xiwu Road, Xi'an, 710004, China
| | - Mei Li
- Department of Infectious Diseases, Xi'an Jiaotong University Second Affiliated Hospital, No. 157 Xiwu Road, Xi'an, 710004, China
| | - Yu-Feng Zhang
- Department of Infectious Diseases, Xi'an Children's Hospital, Xi'an, 710003, China
| | - Jun Wang
- Department of Infectious Diseases, Xi'an Children's Hospital, Xi'an, 710003, China
| | - Shuang-Suo Dang
- Department of Infectious Diseases, Xi'an Jiaotong University Second Affiliated Hospital, No. 157 Xiwu Road, Xi'an, 710004, China.
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Chakravarti A, Bharara T, Kapoor N, Ashraf A. Levels of 25-hydroxy Vitamin D3 and Vitamin D Receptor Polymorphism in Severe Dengue Cases from New Delhi. Trop Med Infect Dis 2020; 5:tropicalmed5020072. [PMID: 32375246 PMCID: PMC7344752 DOI: 10.3390/tropicalmed5020072] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/22/2020] [Accepted: 04/23/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Dengue is the "phoenix" that never went to ashes. First identified in 1943, in Japan, dengue virus has worldwide distribution and is a grave public health concern in developing countries like India; Methods: A cross sectional study was conducted among adults suspected of having dengue fever and attending Lok Nayak Hospital, New Delhi. Restriction Fragment Length Polymorphism was completed for the detection of vitamin D receptor (VDR) gene polymorphism; Results: Serum 25-hydroxy vitamin D3 (vitamin D) levels were found to be 1.6 times elevated in severe dengue cases as compared to healthy controls. Vitamin D levels were significantly higher in secondary infections compared to primary infections as well as secondary severe dengue cases as compared to secondary non-severe cases (p value < 0.05). A significant association of the T allele (rs2228570) was seen in severe dengue cases, while, when comparing the A/A with A/C and C/C genotypes (rs7975232) among dengue cases and healthy controls, the odds ratio was estimated to be 1.24 (0.55-2.75, p > 0.05) and 0.28 (0.08-0.96, p < 0.05) respectively; Conclusions: The present study is an attempt at decoding the role of vitamin D in dengue disease pathogenesis and exploring the role of genetic polymorphism in dengue disease pathogenesis.
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Affiliation(s)
- Anita Chakravarti
- Department of Microbiology, Shree Guru Gobind Singh Tricentenary University, Gurugram (Haryana) 1222505, India;
- Correspondence:
| | - Tanisha Bharara
- Department of Microbiology, Shree Guru Gobind Singh Tricentenary University, Gurugram (Haryana) 1222505, India;
| | - Neeru Kapoor
- Department of Microbiology, Maulana Azad Medical College, New Delhi 110002, India; (N.K.); (A.A.)
| | - Anzar Ashraf
- Department of Microbiology, Maulana Azad Medical College, New Delhi 110002, India; (N.K.); (A.A.)
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Lee C. Controversial Effects of Vitamin D and Related Genes on Viral Infections, Pathogenesis, and Treatment Outcomes. Nutrients 2020; 12:nu12040962. [PMID: 32235600 PMCID: PMC7230640 DOI: 10.3390/nu12040962] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 03/23/2020] [Accepted: 03/26/2020] [Indexed: 12/11/2022] Open
Abstract
Vitamin D (VD) plays an essential role in mineral homeostasis and bone remodeling. A number of different VD-related genes (VDRG) are required for the metabolic activation of VD and the subsequent induction of its target genes. They include a set of genes that encode for VD-binding protein, metabolic enzymes, and the VD receptor. In addition to its well-characterized skeletal function, the immunoregulatory activities of VD and the related polymorphisms of VDRG have been reported and linked to its therapeutic and preventive actions for the control of several viral diseases. However, in regards to their roles in the progression of viral diseases, inconsistent and, in some cases, contradictory results also exist. To resolve this discrepancy, I conducted an extensive literature search by using relevant keywords on the PubMed website. Based on the volume of hit papers related to a certain viral infection, I summarized and compared the effects of VD and VDRG polymorphism on the infection, pathogenesis, and treatment outcomes of clinically important viral diseases. They include viral hepatitis, respiratory viral infections, acquired immunodeficiency syndrome (AIDS), and other viral diseases, which are caused by herpesviruses, dengue virus, rotavirus, and human papillomavirus. This review will provide the most current information on the nutritional and clinical utilization of VD and VDRG in the management of the key viral diseases. This information should be valuable not only to nutritionists but also to clinicians who wish to provide evidence-based recommendations on the use of VD to virally infected patients.
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Affiliation(s)
- Choongho Lee
- College of Pharmacy, Dongguk University, Goyang 10326, Korea
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15
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Martínez-Moreno J, Hernandez JC, Urcuqui-Inchima S. Effect of high doses of vitamin D supplementation on dengue virus replication, Toll-like receptor expression, and cytokine profiles on dendritic cells. Mol Cell Biochem 2019; 464:169-180. [PMID: 31758375 DOI: 10.1007/s11010-019-03658-w] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 11/16/2019] [Indexed: 01/18/2023]
Abstract
Dengue, caused by dengue virus (DENV) infection, is a public health problem worldwide. Although DENV pathogenesis has not yet been fully elucidated, the inflammatory response is a hallmark feature in severe DENV infection. Although vitamin D (vitD) can promote the innate immune response against virus infection, no studies have evaluated the effects of vitD on DENV infection, dendritic cells (DCs), and inflammatory response regulation. This study aimed to assess the impact of oral vitD supplementation on DENV-2 infection, Toll-like receptor (TLR) expression, and both pro- and anti-inflammatory cytokine production in monocyte-derived DCs (MDDCs). To accomplish this, 20 healthy donors were randomly divided into two groups and received either 1000 or 4000 international units (IU)/day of vitD for 10 days. During pre- and post-vitD supplementation, peripheral blood samples were taken to obtain MDDCs, which were challenged with DENV-2. We found that MDDCs from donors who received 4000 IU/day of vitD were less susceptible to DENV-2 infection than MDDCs from donors who received 1000 IU/day of vitD. Moreover, these cells showed decreased mRNA expression of TLR3, 7, and 9; downregulation of IL-12/IL-8 production; and increased IL-10 secretion in response to DENV-2 infection. In conclusion, the administration of 4000 IU/day of vitD decreased DENV-2 infection. Our findings support a possible role of vitD in improving the innate immune response against DENV. However, further studies are necessary to determine the role of vitD on DENV replication and its innate immune response modulation in MDDCs.
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Affiliation(s)
- Jahnnyer Martínez-Moreno
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia UdeA, Calle 70 No. 52-21, 050010, Medellín, Colombia
| | - Juan C Hernandez
- Infettare, Facultad de Medicina, Universidad Cooperativa de Colombia, 050012, Medellín, Colombia
| | - Silvio Urcuqui-Inchima
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia UdeA, Calle 70 No. 52-21, 050010, Medellín, Colombia.
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Azevedo BP, Farias PCS, Pastor AF, Davi CCM, Neco HVPDC, Lima RED, Acioli-Santos B. AAIDO1Variant Genotype (G2431A, rs3739319) Is Associated with Severe Dengue Risk Development in a DEN-3 Brazilian Cohort. Viral Immunol 2019; 32:296-301. [DOI: 10.1089/vim.2018.0149] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
| | - Pablo Cantalice S. Farias
- Department of Virology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation (FIOCRUZ). Recife/PE, Brazil
| | - André Filipe Pastor
- Institute of Education, Science, and Technology of Sertão Pernambucano (IFSertão-PE), Floresta, Pernambuco, Brazil
| | | | | | - Raul Emídio de Lima
- Department of Virology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation (FIOCRUZ). Recife/PE, Brazil
| | - Bartolomeu Acioli-Santos
- Department of Virology, Aggeu Magalhães Institute, Oswaldo Cruz Foundation (FIOCRUZ). Recife/PE, Brazil
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Xu B, Ding MY, Weng Z, Li ZQ, Li F, Sun X, Chen QL, Wang YT, Wang Y, Zhou GC. Discovery of fused bicyclic derivatives of 1H-pyrrolo[1,2-c]imidazol-1-one as VDR signaling regulators. Bioorg Med Chem 2019; 27:3879-3888. [DOI: 10.1016/j.bmc.2019.07.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 07/07/2019] [Accepted: 07/11/2019] [Indexed: 12/14/2022]
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Alves Pereira Neto T, Costa Pereira AA, Costa Hanemann JA, Coelho LFL, Malaquias LCC. DC-SIGN and VDR polymorphisms are associated with chronic form of paracoccidioidomycosis with oral manifestations. Mycoses 2018; 62:186-192. [PMID: 30367528 DOI: 10.1111/myc.12866] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 10/08/2018] [Accepted: 10/21/2018] [Indexed: 12/19/2022]
Abstract
Paracoccidioidomycosis (PCM) is a granulomatous disease caused by fungi of the species complex of the Paracoccidioides genus. One of the main clinical manifestations of PCM is the presence of oral lesions with the presence of epithelioid granulomas. In this work, we aimed to evaluate the frequency of SNPs in the TNF-α, JAK1, VDR, DC-SIGN and FcγRIIa genes in patients with chronic PCM and verify possible association of these SNPs with the organisation pattern of the granulomas in the oral lesions. A total of 66 samples of DNA were obtained from oral lesions biopsies and 106 DNA samples were obtained from healthy individuals. The individuals were genotyped for SNPs in DC-SIGN (rs4804803), FcγRIIa (rs1801274), JAK1 (rs11208534), TNF-α (rs1800629) and VDR (rs7975232) by real-time PCR and allele discrimination method. Granulomas were classified as loose or dense according to the histological pattern. In the VDR (rs7975232), the CC genotype (P < 0.001, OR = 5.94, 95% CI = 2.07-17.05), and the C allele (P = 0.027, OR = 2.71, 95% CI = 1.07-6.86), as well as the GG genotype in DC-SIGN (rs4804803) (P = 0.032, OR: 3.76, 95%, I = 1.06-13.38) are associated with an increased risk of oral PCM. Our data indicate that VDR and DC-SIGN genetics variations are related to the susceptibility of oral PCM in the group of patients analysed.
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Laplana M, Royo JL, Fibla J. Vitamin D Receptor polymorphisms and risk of enveloped virus infection: A meta-analysis. Gene 2018; 678:384-394. [PMID: 30092343 DOI: 10.1016/j.gene.2018.08.017] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 08/04/2018] [Indexed: 12/29/2022]
Abstract
INTRODUCTION Vitamin-D plays a role regulating the immune response against to viral infection. In this sense, vitamin-D deficiency may confer increased susceptibility to enveloped virus infection such as HIV, Hepatitis, Dengue and Respiratory Syncytial virus infection, among others. Vitamin D activity is mediated by its receptor (VDR), which acts as a transcription factor modulating the expression of genes triggering the response against viruses. To date, six major VDR polymorphisms (Cdx, A1012G, FokI, BsmI, ApaI and TaqI) have been studied in the context of viral infection susceptibility. Reported studies show controversial results probably due to statistical lack of power and population genetic differences. AIMS To do a systematic review of the published data and to perform a meta-analysis examining the role of six VDR polymorphisms on infection susceptibility to enveloped virus. RESULTS From all markers and virus considered an association of FokI polymorphism with RSV infection emerges as significant. The worldwide distribution of risk T-allele reveals a lower prevalence in African populations that runs parallel with the relative lower incidence of RSV-associated severe ALRI in children <1 year described in African samples. CONCLUSION The results disclose FokI polymorphism as a relevant variant capturing the association of VDR polymorphisms with viral infection.
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Affiliation(s)
- Marina Laplana
- Department of Basic Medical Sciences, University of Lleida and Institute of Biomedical Research of Lleida (IRBLleida), Lleida, Spain.
| | - José Luis Royo
- Department of Basic Medical Sciences, University of Lleida and Institute of Biomedical Research of Lleida (IRBLleida), Lleida, Spain
| | - Joan Fibla
- Department of Basic Medical Sciences, University of Lleida and Institute of Biomedical Research of Lleida (IRBLleida), Lleida, Spain.
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Immunomodulatory effect of 1, 25 dihydroxy vitamin D 3 on the expression of RNA sensing pattern recognition receptor genes and cytokine response in dengue virus infected U937-DC-SIGN cells and THP-1 macrophages. Int Immunopharmacol 2018; 62:237-243. [PMID: 30032048 DOI: 10.1016/j.intimp.2018.07.019] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 07/10/2018] [Accepted: 07/17/2018] [Indexed: 12/30/2022]
Abstract
Dengue virus (DENV) infections are straining public health systems worldwide. Vitamin D, a secosteroid hormone, is currently being investigated for its immunomodulatory effects in DENV infections. The objectives of the present study was to study the effect of 1, 25 dihydroxy vitamin D3 (1,25(OH)2D3) on the expression of genes coding for RNA sensing pattern recognition receptors, downstream signaling components including oligoadenylate synthetases (OAS) and interferon stimulated gene 15 (ISG15) and T helper (Th)1, Th2 and Th17 cytokine response in DENV infected U937-DC-SIGN cells and THP-1 macrophages. U937-DC-SIGN RNA was investigated for the expression of TLR3, DDX58, IFIH1, OAS1, OAS2, OAS3, CAMP and ISG15 genes using gene expression assays. Interleukin (IL)-12p70, IL-10, IL-4 and IL-17A levels were assessed in the THP-1 macrophage culture supernatants. The results revealed that 1,25(OH)2D3 increased the expression of DDX58, OAS1, OAS2 and OAS3 at 0.1 μM while higher concentration had diminishing effect. 1,25(OH)2D3 enhanced the expression of ISG15 and CAMP genes. 1,25(OH)2D3 suppressed the levels of IL-4 and IL-17A. Lower concentration of 1,25(OH)2D3 suppressed IL-12p70 and IL-10 levels while a higher concentration enhanced the levels. The results suggest that 1,25(OH)2D3 may have concentration dependent immunomodulatory effects. Higher dose of 1,25(OH)2D3 might have an immunoregulatory role in ameliorating inflammation during dengue infections. Further studies are needed to evaluate the efficacy of different doses of 1,25(OH)2D3 in preventing severe dengue.
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Cahill ME, Conley S, DeWan AT, Montgomery RR. Identification of genetic variants associated with dengue or West Nile virus disease: a systematic review and meta-analysis. BMC Infect Dis 2018; 18:282. [PMID: 29929468 PMCID: PMC6014009 DOI: 10.1186/s12879-018-3186-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Accepted: 06/07/2018] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Dengue and West Nile viruses are highly cross-reactive and have numerous parallels in geography, potential vector host (Aedes family of mosquitoes), and initial symptoms of infection. While the vast majority (> 80%) of both dengue and West Nile virus infections result in asymptomatic infections, a minority of individuals experience symptomatic infection and an even smaller proportion develop severe disease. The mechanisms by which these infections lead to severe disease in a subset of infected individuals is incompletely understood, but individual host differences including genetic factors and immune responses have been proposed. We sought to identify genetic risk factors that are associated with more severe disease outcomes for both viruses in order to shed light on possible shared mechanisms of resistance and potential therapeutic interventions. METHODS We applied a search strategy using four major databases (Medline, PubMed, Embase, and Global Health) to find all known genetic associations identified to date with dengue or West Nile virus disease. Here we present a review of our findings and a meta-analysis of genetic variants identified. RESULTS We found genetic variations that are significantly associated with infections of these viruses. In particular we found variation within the OAS1 (meta-OR = 0.83, 95% CI: 0.69-1.00) and CCR5 (meta-OR = 1.29, 95% CI: 1.08-1.53) genes is significantly associated with West Nile virus disease, while variation within MICB (meta-OR = 2.35, 95% CI: 1.68-3.29), PLCE1 (meta-OR = 0.55, 95% CI: 0.42-0.71), MBL2 (meta-OR = 1.54, 95% CI: 1.02-2.31), and IFN-γ (meta-OR = 2.48, 95% CI: 1.30-4.71), is associated with dengue disease. CONCLUSIONS Despite substantial heterogeneity in populations studied, genes examined, and methodology, significant associations with genetic variants were found across studies within both diseases. These gene associations suggest a key role for immune mechanisms in susceptibility to severe disease. Further research is needed to elucidate the role of these genes in disease pathogenesis and may reveal additional genetic factors associated with disease severity.
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Affiliation(s)
- Megan E Cahill
- Yale University School of Public Health, New Haven, CT, USA
| | | | - Andrew T DeWan
- Yale University School of Public Health, New Haven, CT, USA
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Sivadas A, Scaria V. Pharmacogenomic survey of Qatari populations using whole-genome and exome sequences. THE PHARMACOGENOMICS JOURNAL 2018; 18:590-600. [PMID: 29720721 DOI: 10.1038/s41397-018-0022-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 09/25/2017] [Accepted: 02/12/2018] [Indexed: 12/19/2022]
Abstract
The Arabs represent one of the most genetically heterogeneous populations characterized by a high prevalence of Mendelian disorders due to consanguinity. Population-scale genomic datasets provide a unique opportunity to understand the epidemiology of variants associated with differential therapeutic response. We analyzed publicly available genomic data for 1005 Qatari individuals encompassing five subpopulations. The frequencies of known and novel pharmacogenetic variants were compared with global populations. Impact of genetic substructure on the pharmacogenetic landscape of the population was studied. We report an average of three clinically actionable pharmacogenetic variants with FDA-recommended genetic testing per Qatari individual regardless of their genetic ancestry. We observed extensive differences in the frequencies of clinically actionable pharmacogenetic variants among the Qatari subpopulations. Our analysis revealed 3579 deleterious pharmacogenetic variants potentially altering the function of 1163 genes associated with 1565 drugs. This study has thus compiled the first comprehensive landscape of pharmacogenetic variants for any Arab population.
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Affiliation(s)
- Ambily Sivadas
- GN Ramachandran Knowledge Center for Genome Informatics, CSIR Institute of Genomics and Integrative Biology (CSIR-IGIB), Mathura Road, Delhi, 110020, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110025, India
| | - Vinod Scaria
- GN Ramachandran Knowledge Center for Genome Informatics, CSIR Institute of Genomics and Integrative Biology (CSIR-IGIB), Mathura Road, Delhi, 110020, India. .,Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110025, India.
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Yudin NS, Barkhash AV, Maksimov VN, Ignatieva EV, Romaschenko AG. Human Genetic Predisposition to Diseases Caused by Viruses from Flaviviridae Family. Mol Biol 2018. [DOI: 10.1134/s0026893317050223] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Weger-Lucarelli J, Auerswald H, Vignuzzi M, Dussart P, Karlsson EA. Taking a bite out of nutrition and arbovirus infection. PLoS Negl Trop Dis 2018; 12:e0006247. [PMID: 29596427 PMCID: PMC5875747 DOI: 10.1371/journal.pntd.0006247] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Nutrition is a key factor in host–pathogen defense. Malnutrition can increase both host susceptibility and severity of infection through a number of pathways, and infection itself can promote nutritional deterioration and further susceptibility. Nutritional status can also strongly influence response to vaccination or therapeutic pharmaceuticals. Arthropod-borne viruses (arboviruses) have a long history of infecting humans, resulting in regular pandemics as well as an increasing frequency of autochthonous transmission. Interestingly, aside from host-related factors, nutrition could also play a role in the competence of vectors required for transmission of these viruses. Nutritional status of the host and vector could even influence viral evolution itself. Therefore, it is vital to understand the role of nutrition in the arbovirus lifecycle. This Review will focus on nutritional factors that could influence susceptibility and severity of infection in the host, response to prophylactic and therapeutic strategies, vector competence, and viral evolution. As the old adage goes, you are what you eat. Proper nutrition is a cornerstone of health, and malnutrition can seriously impair the function of the immune system, resulting in increased infections or a more severe disease. Imbalanced or inadequate nutrition can also affect responses to vaccines or drugs that are vital for protection and treatment against viruses. A mosquito is also a product of what it eats. Nutrition during development and adult lifecycle can affect the feeding behavior of mosquitoes, thereby affecting transmission of viral diseases. Arthropod-borne viruses (arboviruses) are a major global health concern, especially in areas impacted by malnutrition. Understanding how nutrition can affect both humans and mosquitoes in the context of these viruses is vital to combating these diseases.
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Affiliation(s)
- James Weger-Lucarelli
- Viral Populations and Pathogenesis Unit, Institut Pasteur, Centre National de la Recherche Scientifique, Paris, France
| | - Heidi Auerswald
- Virology Unit, Institut Pasteur du Cambodge, Institut Pasteur International Network, Phnom Penh, Cambodia
| | - Marco Vignuzzi
- Viral Populations and Pathogenesis Unit, Institut Pasteur, Centre National de la Recherche Scientifique, Paris, France
| | - Phillipe Dussart
- Virology Unit, Institut Pasteur du Cambodge, Institut Pasteur International Network, Phnom Penh, Cambodia
| | - Erik A. Karlsson
- Virology Unit, Institut Pasteur du Cambodge, Institut Pasteur International Network, Phnom Penh, Cambodia
- * E-mail:
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Ng D, Ghosh A, Jit M, Seneviratne SL. Mini-review: Can non-human leucocyte antigen genes determine susceptibility to severe dengue syndromes? Trans R Soc Trop Med Hyg 2018; 111:384-392. [DOI: 10.1093/trstmh/trx075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 01/03/2018] [Indexed: 12/29/2022] Open
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Martins DDJ, Matos GC, Loiola RS, D'Annibale V, Corvelo T. Relationship of vitamin D receptor gene polymorphisms in Helicobacter pylori gastric patients. Clin Exp Gastroenterol 2018; 11:19-27. [PMID: 29391820 PMCID: PMC5769596 DOI: 10.2147/ceg.s143332] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Purpose The present study aimed to investigate the association between the human VDR gene and Helicobacter pylori infection. Patients and methods A cross-sectional study was conducted on 208 adult patients with upper gastrointestinal symptoms. Gastric biopsy specimens were obtained from each patient for molecular DNA and histological examination. Patients were genotyped for VDR gene polymorphisms using polymerase chain reaction and restriction fragment length polymorphism analysis. Results The allelic and genotypic distribution analyses of the FokI, ApaI and TaqI polymorphisms of the VDR gene did not show distribution differences between H. pylori-positive and -negative groups. The genotype distribution observed for polymorphism BsmI deviated significantly from what was expected in a Hardy–Weinberg equilibrium test in the H. pylori-positive group (χ2=29.048, p<0.001). The distribution of BsmI genotypes differed significantly between the H. pylori-negative and H. pylori-positive groups (p=0.0034), where the frequency of the bb genotype increased among H. pylori-positive individuals compared with those without infection (63.25% versus 50.55%, respectively). Conversely, the H. pylori-negative group showed a Bb frequency that was 20.27% higher than in the infected group. Conclusion We identified a possible association between the BsmI polymorphism and infection by H. pylori. However, further research is required to clarify this relationship.
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Affiliation(s)
| | - Gyselly Cb Matos
- Immunogenetics Laboratory, Institute of Biological Sciences, Federal University of Pará
| | - Rosane Sp Loiola
- Central Laboratory Pará State, Executive Office of Health Pará State
| | - Vivian D'Annibale
- Epidemiological Surveillance Unit, João de Barros Barreto University Hospital, Belém, Pará, Brazil
| | - Tereza Corvelo
- Immunogenetics Laboratory, Institute of Biological Sciences, Federal University of Pará
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High-dose of vitamin D supplement is associated with reduced susceptibility of monocyte-derived macrophages to dengue virus infection and pro-inflammatory cytokine production: An exploratory study. Clin Chim Acta 2017; 478:140-151. [PMID: 29289621 DOI: 10.1016/j.cca.2017.12.044] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 12/19/2017] [Accepted: 12/28/2017] [Indexed: 11/21/2022]
Abstract
BACKGROUND Dengue, one the most important public health problems in tropical and subtropical areas, is the most important mosquito-borne viral infection in humans. In the absence of effective treatment and vaccine against dengue, the active form of vitamin D could play a central role in protection against dengue virus (DENV), the causal agent of dengue. Recently we reported that monocyte-derived macrophages (MDMs) differentiated in the presence of vitamin D, in addition to expressing lower levels of mannose receptor, are less susceptible to DENV infection and produce low levels of pro-inflammatory cytokines, compared to MDMs differentiated in the absence of vitamin D. OBJECTIVE The aim of this study was to determine that oral vitamin D supplementation exerts an effect on DENV susceptibility and pro-inflammatory cytokine production in MDMs. METHODS Healthy individuals were supplemented with 1000 or 4000 international units (IU)/day of vitamin D during 10days. Before and after vitamin D supplementation, a peripheral blood (PB) sample was taken and the monocytes recovered were used to obtain MDMs and were challenged with DENV-2. Furthermore, the expression of genes encoding vitamin D receptor (VDR), CYP24A1 and CAMP were analyzed using real-time quantitative PCR. RESULTS The data indicate that macrophages differentiated from monocytes obtained from healthy donors who received higher doses of vitamin D (4000IU/day), exhibited higher resistance to DENV-2 infection and produced a significant decrease of pro-inflammatory cytokines and high production of interleukin-10 (IL-10). Furthermore, a significant decrease in intracellular toll-like receptor (TLR) and CAMP mRNA was observed. CONCLUSION A supplement of 4000IU/day of vitamin D may represent an adequate dose to control dengue progression and DENV replication. Although the results of our study suggest that the vitamin D status can influence the immune response, further studies are needed to determine the feasibility of vitamin D as anti-DENV agent and immune modulator.
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High prevalence of dengue antibodies and the arginine variant of the FcγRIIa polymorphism in asymptomatic individuals in a population of Minas Gerais State, Southeast Brazil. Immunogenetics 2017; 70:355-362. [DOI: 10.1007/s00251-017-1046-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 11/12/2017] [Indexed: 12/30/2022]
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Xavier-Carvalho C, Cardoso CC, de Souza Kehdy F, Pacheco AG, Moraes MO. Host genetics and dengue fever. INFECTION GENETICS AND EVOLUTION 2017; 56:99-110. [PMID: 29133029 DOI: 10.1016/j.meegid.2017.11.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 11/07/2017] [Accepted: 11/09/2017] [Indexed: 12/13/2022]
Abstract
Dengue is a major worldwide problem in tropical and subtropical areas; it is caused by four different viral serotypes, and it can manifest as asymptomatic, mild, or severe. Many factors interact to determine the severity of the disease, including the genetic profile of the infected patient. However, the mechanisms that lead to severe disease and eventually death have not been determined, and a great challenge is the early identification of patients who are more likely to progress to a worse health condition. Studies performed in regions with cyclic outbreaks such as Cuba, Brazil, and Colombia have demonstrated that African ancestry confers protection against severe dengue. Highlighting the host genetics as an important factor in infectious diseases, a large number of association studies between genetic polymorphisms and dengue outcomes have been published in the last two decades. The most widely used approach involves case-control studies with candidate genes, such as the HLA locus and genes for receptors, cytokines, and other immune mediators. Additionally, a Genome-Wide Association Study (GWAS) identified SNPs associated with African ethnicity that had not previously been identified in case-control studies. Despite the increasing number of publications in America, Africa, and Asia, the results are quite controversial, and a meta-analysis is needed to assess the consensus among the studies. SNPs in the MICB, TNF, CD209, FcγRIIA, TPSAB1, CLEC5A, IL10 and PLCE1 genes are associated with the risk or protection of severe dengue, and the findings have been replicated in different populations. A thorough understanding of the viral, human genetic, and immunological mechanisms of dengue and how they interact is essential for effectively preventing dengue, but also managing and treating patients.
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Affiliation(s)
| | - Cynthia Chester Cardoso
- Laboratório de Virologia Molecular, Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, RJ, Brazil
| | | | | | - Milton Ozório Moraes
- Laboratório de Hanseníase, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, RJ, Brazil.
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Arboleda Alzate JF, Rodenhuis-Zybert IA, Hernández JC, Smit JM, Urcuqui-Inchima S. Human macrophages differentiated in the presence of vitamin D3 restrict dengue virus infection and innate responses by downregulating mannose receptor expression. PLoS Negl Trop Dis 2017; 11:e0005904. [PMID: 29020083 PMCID: PMC5653353 DOI: 10.1371/journal.pntd.0005904] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 10/23/2017] [Accepted: 08/23/2017] [Indexed: 02/07/2023] Open
Abstract
Background Severe dengue disease is associated with high viral loads and overproduction of pro-inflammatory cytokines, suggesting impairment in the control of dengue virus (DENV) and the mechanisms that regulate cytokine production. Vitamin D3 has been described as an important modulator of immune responses to several pathogens. Interestingly, increasing evidence has associated vitamin D with decreased DENV infection and early disease recovery, yet the molecular mechanisms whereby vitamin D reduces DENV infection are not well understood. Methods and principal findings Macrophages represent important cell targets for DENV replication and consequently, they are key drivers of dengue disease. In this study we evaluated the effect of vitamin D3 on the differentiation of monocyte-derived macrophages (MDM) and their susceptibility and cytokine response to DENV. Our data demonstrate that MDM differentiated in the presence of vitamin D3 (D3-MDM) restrict DENV infection and moderate the classical inflammatory cytokine response. Mechanistically, vitamin D3-driven differentiation led to reduced surface expression of C-type lectins including the mannose receptor (MR, CD206) that is known to act as primary receptor for DENV attachment on macrophages and to trigger of immune signaling. Consequently, DENV bound less efficiently to vitamin D3-differentiated macrophages, leading to lower infection. Interestingly, IL-4 enhanced infection was reduced in D3-MDM by restriction of MR expression. Moreover, we detected moderate secretion of TNF-α, IL-1β, and IL-10 in D3-MDM, likely due to less MR engagement during DENV infection. Conclusions/Significance Our findings reveal a molecular mechanism by which vitamin D counteracts DENV infection and progression of severe disease, and indicates its potential relevance as a preventive or therapeutic candidate. Dengue represents a major worldwide concern for public health. Clinical complications rely on vascular leak of fluids and molecules from the bloodstream that leads to a potentially fatal hemodynamic compromise. Disease progression has been related to poor control of dengue virus (DENV) dissemination and excessive production of pro-inflammatory mediators that affect the endothelial function. Vitamin D has been shown to modulate immune responses and to alleviate dengue disease. Here, we studied how addition of vitamin D during macrophage differentiation modulates the functional features of these cells in the context of DENV infection. We observed that vitamin D reduced susceptibility of these cells to DENV infection and down-regulated the virus-induced cytokine response. This phenotype was attributed to downregulation of MR, a molecule hijacked by the virus to gain entry into the cells and a key receptor of the MR/CLEC5A complex that links binding and immune activation during DENV infection. Our study sheds light on the mechanism by which vitamin D can restrict DENV dissemination and the cytokine response in macrophages, indicating the potential relevance of this hormone as a preventive and therapeutic candidate.
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Affiliation(s)
- John F. Arboleda Alzate
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
- Department of Medical Microbiology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - Izabela A. Rodenhuis-Zybert
- Department of Medical Microbiology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - Juan C. Hernández
- Infettare, Facultad de Medicina, Universidad Cooperativa de Colombia, Medellín, Colombia
| | - Jolanda M. Smit
- Department of Medical Microbiology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | - Silvio Urcuqui-Inchima
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
- * E-mail:
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Sánchez-Leyva M, Sánchez-Zazueta JG, Osuna-Ramos JF, Rendón-Aguilar H, Félix-Espinoza R, Becerra-Loaiza DS, Sánchez-García DC, Romero-Quintana JG, Castillo Ureta H, Velarde-Rodríguez I, Velarde-Félix JS. Genetic Polymorphisms of Tumor Necrosis Factor Alpha and Susceptibility to Dengue Virus Infection in a Mexican Population. Viral Immunol 2017. [DOI: 10.1089/vim.2017.0029] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Affiliation(s)
- Marina Sánchez-Leyva
- Departamento de Ciencias Biomédicas, Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, Culiacán, México
| | - Jorge Guillermo Sánchez-Zazueta
- Cuerpo Académico Inmunogenética y Evolución UAS-CA-265, Unidad Académica Escuela de Biología, Universidad Autónoma de Sinaloa, Culiacán, México
| | - Juan Fidel Osuna-Ramos
- Departamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Mexico City, México
| | | | | | | | | | - José Geovanni Romero-Quintana
- Departamento de Ciencias Biomédicas, Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, Culiacán, México
| | | | | | - Jesús Salvador Velarde-Félix
- Departamento de Ciencias Biomédicas, Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, Culiacán, México
- Cuerpo Académico Inmunogenética y Evolución UAS-CA-265, Unidad Académica Escuela de Biología, Universidad Autónoma de Sinaloa, Culiacán, México
- Hospital General de Culiacán, “Bernardo J Gastélum,” Culiacán, México
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Vitamin D serostatus and dengue fever progression to dengue hemorrhagic fever/dengue shock syndrome. Epidemiol Infect 2017; 145:2961-2970. [DOI: 10.1017/s0950268817002059] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
SUMMARYVitamin D could modulate pathways leading to dengue hemorrhagic fever/dengue shock syndrome (DHF/DSS). We examined the associations of serum total 25-hydroxy vitamin D [25(OH)D] and vitamin D binding protein (VDBP) concentrations in patients with uncomplicated dengue fever (DF) with risk of progression to DHF/DSS. In a case–control study nested in a cohort of DF patients who were followed during the acute episode in Bucaramanga, Colombia, we compared 25(OH)D and VDBP at onset of fever between 110 cases who progressed to DHF/DSS and 235 DF controls who did not progress. 25(OH)D concentrations were also compared between the acute sample and a sample collected >1 year post-convalescence in a subgroup. Compared with 25(OH)D ⩾75 nmol/l, adjusted odds ratios (95% CI) for progression were 0·44 (0·22–0·88) and 0·13 (0·02–1·05) for 50 to 75 nmol/l (vitamin D insufficiency) and <50 nmol/l (vitamin D deficiency), respectively (P, trend = 0·003). Mean 25(OH)D concentrations were much lower post-convalescence compared with the acute episode, regardless of case status. Compared with controls, mean VDBP was non-significantly lower in cases. We conclude that low serum 25(OH)D concentrations in DF patients predict decreased odds of progression to DHF/DSS.
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Yu F, Wang C, Wang L, Jiang H, Ba Y, Cui L, Wang Y, Yu S, Li W. Study and evaluation the impact of vitamin D receptor variants on the risk of type 2 diabetes mellitus in Han Chinese. J Diabetes 2017; 9:275-284. [PMID: 27100371 DOI: 10.1111/1753-0407.12413] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 03/30/2016] [Accepted: 04/15/2016] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Vitamin D and the vitamin D receptor (VDR) are associated with susceptibility to type 2 diabetes mellitus (T2DM). The purpose of the present study was to screen more single nucleotide polymorphisms (SNPs) of VDR and assess their effects on the risk of T2DM in Han Chinese. METHOD Four SNPs were genotyped in 1191 individuals (397 cases, 794 controls). Allele frequencies and genotype distributions were analyzed. Effects were investigated by evaluating genotype distribution with regard to phenotypes, insulin resistance, and β-cell function. Haplotype analysis and gene risk score (GRS) were used to evaluate the combined and additive roles of VDR SNPs on T2DM pathogenesis. RESULTS There was a significant association between rs739837 and T2DM in two models and allele frequency distribution. The novel locus rs2239179 differed significantly between cases and controls, especially in males and those aged >55 years, in three models and allele frequency distribution. The TT genotype of rs739837 was associated with higher triglyceride than GG and TG genotypes, and higher total cholesterol levels than the GG genotype. Compared with the GTGA haplotype, the GCGG haplotype reduced the risk of T2DM. Trend Chi-squared tests showed that there was significant association between the weighted GRS and the risk of T2DM (Ptrend = 0.034). CONCLUSION This study provides novel evidence that rs739837 is associated with lipid metabolism in T2DM patients. The rs739837 and rs2239179 SNPs were associated with the risk of T2DM in Han Chinese. The VDR SNPs had combined and additive effects on the risk of T2DM.
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Affiliation(s)
- Fei Yu
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - ChongJian Wang
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Ling Wang
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - HongLin Jiang
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Yue Ba
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - LingLing Cui
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Yan Wang
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - SongCheng Yu
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - WenJie Li
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, China
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Bustos-Arriaga J, Mita-Mendoza NK, Lopez-Gonzalez M, García-Cordero J, Juárez-Delgado FJ, Gromowski GD, Méndez-Cruz RA, Fairhurst RM, Whitehead SS, Cedillo-Barrón L. Soluble mediators produced by the crosstalk between microvascular endothelial cells and dengue-infected primary dermal fibroblasts inhibit dengue virus replication and increase leukocyte transmigration. Immunol Res 2016; 64:392-403. [PMID: 26130295 DOI: 10.1007/s12026-015-8675-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
When dengue virus (DENV)-infected mosquitoes use their proboscis to probe into human skin during blood feeding, both saliva and virus are released. During this process, cells from the epidermis and dermis layers of the skin, along with small blood vessels, may get exposed to or infected with DENV. In these microenvironments of the skin, the presence of DENV initiates a complex interplay among the DENV-infected and non-infected neighboring cells at the initial bite site. Previous studies suggested that DENV-infected human dermal fibroblasts (HDFs) participate in the immune response against DENV by secreting soluble mediators of innate immunity. In the present study, we investigated whether DENV-infected HDFs activate human dermal microvascular endothelial cells (HDMECs) in co-cultures. Our results suggest that co-cultures of DENV-infected HDFs and HDMECs elicit soluble mediators that are sufficient to reduce viral replication, activate HDMECs, and induce leukocyte migration through HDMEC monolayers. These effects were partly dependent on HDF donor and DENV serotype, which may provide novel insights into the natural variation in host susceptibility to DENV disease.
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Affiliation(s)
- José Bustos-Arriaga
- Departmento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados, Instituto Politécnico Nacional, Mexico, Distrito Federal, Mexico
- Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Neida K Mita-Mendoza
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Moises Lopez-Gonzalez
- Departmento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados, Instituto Politécnico Nacional, Mexico, Distrito Federal, Mexico
| | - Julio García-Cordero
- Departmento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados, Instituto Politécnico Nacional, Mexico, Distrito Federal, Mexico
| | | | - Gregory D Gromowski
- Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - René A Méndez-Cruz
- Laboratorio de Inmunología UMF, FES Iztacala, Universidad Autónoma de México, Mexico, Distrito Federal, Mexico
| | - Rick M Fairhurst
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Stephen S Whitehead
- Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Leticia Cedillo-Barrón
- Departmento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados, Instituto Politécnico Nacional, Mexico, Distrito Federal, Mexico.
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Jolliffe DA, Walton RT, Griffiths CJ, Martineau AR. Single nucleotide polymorphisms in the vitamin D pathway associating with circulating concentrations of vitamin D metabolites and non-skeletal health outcomes: Review of genetic association studies. J Steroid Biochem Mol Biol 2016; 164:18-29. [PMID: 26686945 DOI: 10.1016/j.jsbmb.2015.12.007] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 11/03/2015] [Accepted: 12/09/2015] [Indexed: 12/19/2022]
Abstract
Polymorphisms in genes encoding proteins involved in vitamin D metabolism and transport are recognised to influence vitamin D status. Syntheses of genetic association studies linking these variants to non-skeletal health outcomes are lacking. We therefore conducted a literature review to identify reports of statistically significant associations between single nucleotide polymorphisms (SNP) in 11 vitamin D pathway genes (DHCR7, CYP2R1, CYP3A4, CYP27A1, DBP, LRP2, CUB, CYP27B1, CYP24A1, VDR and RXRA) and non-bone health outcomes and circulating levels of 25-hydroxyvitamin D (25[OH]D and 1,25-dihydroxyvitamin D (1,25[OH]2D). A total of 120 genetic association studies reported positive associations, of which 44 investigated determinants of circulating 25(OH)D and/or 1,25(OH)2D concentrations, and 76 investigated determinants of non-skeletal health outcomes. Statistically significant associations were reported for a total of 55 SNP in the 11 genes investigated. There was limited overlap between genetic determinants of vitamin D status and those associated with non-skeletal health outcomes: polymorphisms in DBP, CYP2R1 and DHCR7 were the most frequent to be reported to associate with circulating concentrations of 25(OH)D, while polymorphisms in VDR were most commonly reported to associate with non-skeletal health outcomes, among which infectious and autoimmune diseases were the most represented.
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Affiliation(s)
- David A Jolliffe
- Centre for Primary Care and Public Health, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London E1 2AB, UK.
| | - Robert T Walton
- Centre for Primary Care and Public Health, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London E1 2AB, UK
| | - Christopher J Griffiths
- Centre for Primary Care and Public Health, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London E1 2AB, UK
| | - Adrian R Martineau
- Centre for Primary Care and Public Health, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London E1 2AB, UK.
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Association of vitamin D receptor gene TaqI, BsmI, FokI and ApaI polymorphisms and susceptibility to extremity chronic osteomyelitis in Chinese population. Injury 2016; 47:1655-60. [PMID: 27329975 DOI: 10.1016/j.injury.2016.06.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 05/31/2016] [Accepted: 06/02/2016] [Indexed: 02/02/2023]
Abstract
Previous studies have indicated that vitamin D receptor (VDR) TaqI, BsmI, FokI and ApaI gene polymorphisms are associated with the risk of several inflammatory diseases. However, potential association of the VDR gene polymorphisms with susceptibility to extremity chronic osteomyelitis remains unclear. The present study aimed to investigate link between VDR gene polymorphisms and the risk of extremity chronic osteomyelitis in Chinese population. A total of 233 patients with chronic osteomyelitis and 200 healthy controls were genotyped for the 4 single-nucleotide polymorphisms (SNPs) (TaqI, BsmI, FokI and ApaI) in VDR gene using the SNaPshot genotyping method. The frequencies of mutant allele C in rs731236 (P=0.044, OR=1.830, 95% CI 1.009 - 3.319) and rs2228570 (P=0.029, OR=1.347, 95% CI 1.031 - 1.761) were significantly higher in patients than those in healthy controls. In addition, outcomes of the logistic regression analysis adjusted by gender and age revealed that significant links were found between rs731236 (P=0.05, OR=1.887, 95% CI 1.001 - 3.558), rs2228570 (P=0.042, OR=1.594, 95% CI 1.016-2.500) and the risk of developing chronic osteomyelitis by dominant genetic model. In addition, significant association was also found between rs2228570 and the risk of developing the disease by homozygous model (P=0.034, OR=1.803, 95% CI 1.046 - 3.106). However, no significant correlations were found between BsmI (rs1544410) or ApaI (rs7975232) gene polymorphisms and the susceptibility to the disease. To our knowledge, we reported for the first time that VDR gene TaqI (rs731236) and FokI (rs2228570) polymorphisms may contribute to the increased risk of chronic osteomyelitis in Chinese population.
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Kamal A, Gamal SM, Elgengehy FT, Alkemary AK, Siam I. Association of VDR ApaI and TaqI Gene Polymorphisms with the Risk of Scleroderma and Behçet’s Disease. Immunol Invest 2016; 45:531-42. [DOI: 10.1080/08820139.2016.1180302] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Asmaa Kamal
- Department of Clinical & Chemical Pathology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Sherif M. Gamal
- Department of Rheumatology and Rehabilitation, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Fatema T. Elgengehy
- Department of Rheumatology and Rehabilitation, Faculty of Medicine, Cairo University, Cairo, Egypt
| | | | - Ibrahem Siam
- Internal Medicine Department, National Research Center, Cairo, Egypt
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Vitamin D-Regulated MicroRNAs: Are They Protective Factors against Dengue Virus Infection? Adv Virol 2016; 2016:1016840. [PMID: 27293435 PMCID: PMC4879221 DOI: 10.1155/2016/1016840] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 04/07/2016] [Accepted: 04/20/2016] [Indexed: 12/19/2022] Open
Abstract
Over the last few years, an increasing body of evidence has highlighted the critical participation of vitamin D in the regulation of proinflammatory responses and protection against many infectious pathogens, including viruses. The activity of vitamin D is associated with microRNAs, which are fine tuners of immune activation pathways and provide novel mechanisms to avoid the damage that arises from excessive inflammatory responses. Severe symptoms of an ongoing dengue virus infection and disease are strongly related to highly altered production of proinflammatory mediators, suggesting impairment in homeostatic mechanisms that control the host's immune response. Here, we discuss the possible implications of emerging studies anticipating the biological effects of vitamin D and microRNAs during the inflammatory response, and we attempt to extrapolate these findings to dengue virus infection and to their potential use for disease management strategies.
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Wu M, Yue M, Huang P, Zhang Y, Xie C, Yu R, Li J, Wang J. Vitamin D level and vitamin D receptor genetic variations contribute to HCV infection susceptibility and chronicity in a Chinese population. INFECTION GENETICS AND EVOLUTION 2016; 41:146-152. [PMID: 27063396 DOI: 10.1016/j.meegid.2016.03.032] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 03/26/2016] [Accepted: 03/30/2016] [Indexed: 02/08/2023]
Abstract
Vitamin D and vitamin D receptor (VDR) are involved in multiple immune-mediated disorders including chronic hepatitis C virus (HCV) infection. The aim of this study was to determine the association between plasma vitamin D level, VDR genetic polymorphisms and risk of HCV infection susceptibility and chronicity. Seven single nucleotide polymorphisms (SNPs) in VDR gene were genotyped and plasma 25-hydroxyvitamin D [25(OH)D] levels were measured in a Han Chinese population of 898 HCV persistent infection cases, 558 spontaneous clearance subjects and 1136 uninfected controls with high risk of HCV infection. In this case-control study, the average plasma 25(OH)D level in persistent infection patients was significantly lower than that in spontaneous clearance cases (P=0.039) and controls (P=0.005). Logistic analyses indicated that rs7975232-C, rs2239185-T and rs11574129-T alleles were significantly associated with a decreased risk of HCV infection susceptibility (all PBonferroni<0.05, in additive/dominant models; Ptrend=9.000×10(-4), combined effects in a locus-dosage manner). The protective effects of three favorable alleles were more evident among males, females and subjects aged ≤50years (all P<0.05). Haplotype analyses suggested that compared with the most frequent haplotype Ars7975232Trs731236Crs11574129, CTT was correlated with a reduced risk of HCV infection susceptibility (P=2.200×10(-3)). These findings implied that low vitamin D levels might be associated with an increased risk for HCV infection and chronicity, and favorable VDR variants (rs7975232-C, rs2239185-T and rs11574129-T) might contribute to a decreased susceptibility to HCV infection in a high-risk Chinese population.
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Affiliation(s)
- Mengping Wu
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, No. 818 East Tianyuan Road, Nanjing 211166, Jiangsu, China
| | - Ming Yue
- Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, 210029, Nanjing, Jiangsu, China
| | - Peng Huang
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, No. 818 East Tianyuan Road, Nanjing 211166, Jiangsu, China
| | - Yun Zhang
- Huadong Research Institute for Medicine and Biotechnics, No. 293 Zhongshan East Road, Nanjing 210002, Jiangsu, China
| | - Chaonan Xie
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, No. 818 East Tianyuan Road, Nanjing 211166, Jiangsu, China
| | - Rongbin Yu
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, No. 818 East Tianyuan Road, Nanjing 211166, Jiangsu, China
| | - Jun Li
- Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, 210029, Nanjing, Jiangsu, China
| | - Jie Wang
- Department of Basic and Community Nursing, School of Nursing, Nanjing Medical University, No. 818 East Tianyuan Road, Nanjing 211166, Jiangsu, China.
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1α,25(OH)2 Vitamin D3 Modulates Avian T Lymphocyte Functions without Inducing CTL Unresponsiveness. PLoS One 2016; 11:e0150134. [PMID: 26910045 PMCID: PMC4765962 DOI: 10.1371/journal.pone.0150134] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 02/09/2016] [Indexed: 12/24/2022] Open
Abstract
1,25-Dihydroxyvitamin D3 (Vitamin D) is a naturally synthesized fat soluble vitamin shown to have immunomodulatory, anti-inflammatory and cancer prevention properties in human and murine models. Here, we studied the effects of Vitamin D on the functional abilities of avian T lymphocytes using chicken Interferon (IFN)-γ ELISPOT assay, BrdU proliferation assay, Annexin V apoptosis assay and PhosFlow for detecting phosphorylated signalling molecules. The results demonstrate that Vitamin D significantly inhibited the abilities of T lymphocytes to produce IFN-γ and proliferate in vitro (P≤0.05), but retained their ability to undergo degranulation, which is a maker for cytotoxicity of these cells. Similarly, Vitamin D did not inhibit Extracellular signal-Regulated Kinase (ERK) 1/2 phosphorylation, a key mediator in T cell signalling, in the stimulated T lymphocytes population, while reduced ERK1/2 phosphorylation levels in the unstimulated cells. Our data provide evidence that Vitamin D has immuno-modulatory properties on chicken T lymphocytes without inducing unresponsiveness and by limiting immuno-pathology can promote protective immunity against infectious diseases of poultry.
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Nedjadi T, El-Kafrawy S, Sohrab SS, Desprès P, Damanhouri G, Azhar E. Tackling dengue fever: Current status and challenges. Virol J 2015; 12:212. [PMID: 26645066 PMCID: PMC4673751 DOI: 10.1186/s12985-015-0444-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 12/01/2015] [Indexed: 12/22/2022] Open
Abstract
According to recent statistics, 96 million apparent dengue infections were estimated worldwide in 2010. This figure is by far greater than the WHO prediction which indicates the rapid spread of this disease posing a growing threat to the economy and a major challenge to clinicians and health care services across the globe particularly in the affected areas.This article aims at bringing to light the current epidemiological and clinical status of the dengue fever. The relationship between genetic mutations, single nucleotide polymorphism (SNP) and the pathophysiology of disease progression will be put into perspective. It will also highlight the recent advances in dengue vaccine development.Thus far, a significant progress has been made in unraveling the risk factors and understanding the molecular pathogenesis associated with the disease. However, further insights in molecular features of the disease and the development of animal models will enormously help improving the therapeutic interventions and potentially contribute to finding new preventive measures for population at risk.
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Affiliation(s)
- Taoufik Nedjadi
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia.
| | - Sherif El-Kafrawy
- Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia.
| | - Sayed S Sohrab
- Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia.
| | - Philippe Desprès
- UMR PIMIT (I2T team), University of Reunion island, INSERM U1187, CNRS 9192, IRD 249, Technology Platform CYROI, 2 rue Maxime Rivière Saint-Clotilde, La Reunion, 97491, France.
| | - Ghazi Damanhouri
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia.
| | - Esam Azhar
- Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia.
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Sarkar S, Hewison M, Studzinski GP, Li YC, Kalia V. Role of vitamin D in cytotoxic T lymphocyte immunity to pathogens and cancer. Crit Rev Clin Lab Sci 2015; 53:132-45. [PMID: 26479950 DOI: 10.3109/10408363.2015.1094443] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The discovery of vitamin D receptor (VDR) expression in immune cells has opened up a new area of research into immunoregulation by vitamin D, a niche that is distinct from its classical role in skeletal health. Today, about three decades since this discovery, numerous cellular and molecular targets of vitamin D in the immune system have been delineated. Moreover, strong clinical associations between vitamin D status and the incidence/severity of many immune-regulated disorders (e.g. infectious diseases, cancers and autoimmunity) have prompted the idea of using vitamin D supplementation to manipulate disease outcome. While much is known about the effects of vitamin D on innate immune responses and helper T (T(H)) cell immunity, there has been relatively limited progress on the frontier of cytotoxic T lymphocyte (CTL) immunity--an arm of host cellular adaptive immunity that is crucial for the control of such intracellular pathogens as human immunodeficiency virus (HIV), tuberculosis (TB), malaria, and hepatitis C virus (HCV). In this review, we discuss the strong historical and clinical link between vitamin D and infectious diseases that involves cytotoxic T lymphocyte (CTL) immunity, present our current understanding as well as critical knowledge gaps in the realm of vitamin D regulation of host CTL responses, and highlight potential regulatory connections between vitamin D and effector and memory CD8 T cell differentiation events during infections.
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Affiliation(s)
- Surojit Sarkar
- a Department of Pediatrics, Division of Hematology and Oncology , University of Washington School of Medicine , Seattle , WA , USA .,b Seattle Children's Research Institute, Ben Towne Center for Childhood Cancer Research , Seattle , WA , USA
| | - Martin Hewison
- c Centre for Endocrinology, Diabetes and Metabolism (CEDAM), The University of Birmingham , Birmingham , UK
| | - George P Studzinski
- d Department of Pathology and Laboratory Medicine , Rutgers New Jersey Medical School , Newark , NJ , USA , and
| | - Yan Chun Li
- e Department of Medicine, Division of Biological Sciences , The University of Chicago , Chicago , IL , USA
| | - Vandana Kalia
- a Department of Pediatrics, Division of Hematology and Oncology , University of Washington School of Medicine , Seattle , WA , USA .,b Seattle Children's Research Institute, Ben Towne Center for Childhood Cancer Research , Seattle , WA , USA
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Sadarangani SP, Whitaker JA, Poland GA. "Let there be light": the role of vitamin D in the immune response to vaccines. Expert Rev Vaccines 2015; 14:1427-40. [PMID: 26325349 DOI: 10.1586/14760584.2015.1082426] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Vitamin D's non-skeletal actions, including immunomodulatory role, have been increasingly recognized. Of significance, many immune cells are able to synthesize a biologically active form of vitamin D from circulating 25-hydroxyvitamin D with subsequent intracrine actions, and the vitamin D receptor is broadly distributed. In this review, we discuss vitamin D's potent role in innate and adaptive immune responses and published studies evaluating the impact of serum vitamin D, vitamin D gene pathway polymorphisms or empiric vitamin D supplementation on vaccine immunogenicity. We highlight existing knowledge gaps and propose the steps needed to advance the science and answer the question of whether vitamin D may prove valuable as a vaccine adjuvant for certain vaccines against infectious diseases.
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Affiliation(s)
- Sapna P Sadarangani
- a 1 Mayo Vaccine Research Group, Rochester, MN, USA.,b 2 Division of Infectious Diseases, Mayo Clinic, Rochester, MN, USA
| | | | - Gregory A Poland
- a 1 Mayo Vaccine Research Group, Rochester, MN, USA.,c 3 Mayo Clinic Division of General Internal Medicine, Rochester, MN, USA
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Neela VSK, Suryadevara NC, Shinde VG, Pydi SS, Jain S, Jonnalagada S, Singh SS, Valluri VL, Anandaraj MPJS. Association of Taq I, Fok I and Apa I polymorphisms in Vitamin D Receptor (VDR) gene with leprosy. Hum Immunol 2015; 76:402-5. [PMID: 25890006 DOI: 10.1016/j.humimm.2015.04.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Revised: 04/02/2015] [Accepted: 04/09/2015] [Indexed: 01/25/2023]
Abstract
BACKGROUND Vitamin D Receptor (VDR) is a transacting transcription factor which mediates immunomodulatory function and plays a key role in innate and adaptive immune responses through its ligand and polymorphisms in VDR gene may affect its regulatory function. OBJECTIVE To investigate the association of three VDR gene polymorphisms (TaqI rs731236, FokI rs2228570 and ApaI rs7975232) with leprosy. METHODS The study group includes 404 participants of which 222 were leprosy patients (paucibacillary=87, multibacillary=135) and 182 healthy controls. Genotyping was done using PCR-RFLP technique. Statistical analysis was performed using SNP Stats and PLINK software. RESULTS The VDR FokI (rs2228570) ff genotype, ApaI (rs7975232) AA, Aa genotype and haplotype T-f-a, T-F-A were positively associated with leprosy when compared to healthy controls. CONCLUSION The two variants at Fok and Apa positions in VDR gene are significantly associated with leprosy. Genotypes at FokI (ff), ApaI (aa) and haplotype (T-F-a, T-f-a) may contribute to the risk of developing leprosy by altering VDR phenotype/levels subsequently modulation of immune response.
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Affiliation(s)
| | | | - Vidya Gouri Shinde
- LEPRA India - Blue Peter Public Health & Research Centre (BPHRC), Hyderabad, Telangana, India
| | - Satya Sudheer Pydi
- LEPRA India - Blue Peter Public Health & Research Centre (BPHRC), Hyderabad, Telangana, India
| | - Suman Jain
- Thalassemia and Sickle Cell Anaemia Society (TSCS), Hyderabad, Telangana, India
| | - Subbanna Jonnalagada
- LEPRA India - Blue Peter Public Health & Research Centre (BPHRC), Hyderabad, Telangana, India
| | | | - Vijaya Lakshmi Valluri
- LEPRA India - Blue Peter Public Health & Research Centre (BPHRC), Hyderabad, Telangana, India
| | - M P J S Anandaraj
- LEPRA India - Blue Peter Public Health & Research Centre (BPHRC), Hyderabad, Telangana, India
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Ahmed S, Finkelstein JL, Stewart AM, Kenneth J, Polhemus ME, Endy TP, Cardenas W, Mehta S. Micronutrients and dengue. Am J Trop Med Hyg 2014; 91:1049-56. [PMID: 25200269 DOI: 10.4269/ajtmh.14-0142] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Dengue virus infection is the most widespread mosquito-borne viral infection in humans and has emerged as a serious global health challenge. In the absence of effective treatment and vaccine, host factors including nutritional status, which may alter disease progression, need investigation. The interplay between nutrition and other infections is well-established, and modulation of nutritional status often presents a simple low-cost method of interrupting transmission, reducing susceptibility, and/or ameliorating disease severity. This review examines the evidence on the role of micronutrients in dengue virus infection. We found critical issues and often inconsistent results across studies; this finding along with the lack of sufficient literature in this field have limited our ability to make any recommendations. However, vitamins D and E have shown promise in small supplementation trials. In summary, the role of micronutrients in dengue virus infection is an exciting research area and needs to be examined in well-designed studies with larger samples.
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Affiliation(s)
- Sundus Ahmed
- Division of Nutritional Sciences, Cornell University, Ithaca, New York; Center for Global Health and Translational Science, State University of New York Upstate Medical University, Syracuse, New York; Division of Infectious Diseases, St. John's Research Institute, Bangalore, India; Escuela Superior Politécnica del Litoral, Guayaquil, Ecuador
| | - Julia L Finkelstein
- Division of Nutritional Sciences, Cornell University, Ithaca, New York; Center for Global Health and Translational Science, State University of New York Upstate Medical University, Syracuse, New York; Division of Infectious Diseases, St. John's Research Institute, Bangalore, India; Escuela Superior Politécnica del Litoral, Guayaquil, Ecuador
| | - Anna M Stewart
- Division of Nutritional Sciences, Cornell University, Ithaca, New York; Center for Global Health and Translational Science, State University of New York Upstate Medical University, Syracuse, New York; Division of Infectious Diseases, St. John's Research Institute, Bangalore, India; Escuela Superior Politécnica del Litoral, Guayaquil, Ecuador
| | - John Kenneth
- Division of Nutritional Sciences, Cornell University, Ithaca, New York; Center for Global Health and Translational Science, State University of New York Upstate Medical University, Syracuse, New York; Division of Infectious Diseases, St. John's Research Institute, Bangalore, India; Escuela Superior Politécnica del Litoral, Guayaquil, Ecuador
| | - Mark E Polhemus
- Division of Nutritional Sciences, Cornell University, Ithaca, New York; Center for Global Health and Translational Science, State University of New York Upstate Medical University, Syracuse, New York; Division of Infectious Diseases, St. John's Research Institute, Bangalore, India; Escuela Superior Politécnica del Litoral, Guayaquil, Ecuador
| | - Timothy P Endy
- Division of Nutritional Sciences, Cornell University, Ithaca, New York; Center for Global Health and Translational Science, State University of New York Upstate Medical University, Syracuse, New York; Division of Infectious Diseases, St. John's Research Institute, Bangalore, India; Escuela Superior Politécnica del Litoral, Guayaquil, Ecuador
| | - Washington Cardenas
- Division of Nutritional Sciences, Cornell University, Ithaca, New York; Center for Global Health and Translational Science, State University of New York Upstate Medical University, Syracuse, New York; Division of Infectious Diseases, St. John's Research Institute, Bangalore, India; Escuela Superior Politécnica del Litoral, Guayaquil, Ecuador
| | - Saurabh Mehta
- Division of Nutritional Sciences, Cornell University, Ithaca, New York; Center for Global Health and Translational Science, State University of New York Upstate Medical University, Syracuse, New York; Division of Infectious Diseases, St. John's Research Institute, Bangalore, India; Escuela Superior Politécnica del Litoral, Guayaquil, Ecuador
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Abstract
Beyond its critical function in calcium homeostasis, vitamin D has recently been found to play an important role in the modulation of the immune/inflammation system via regulating the production of inflammatory cytokines and inhibiting the proliferation of proinflammatory cells, both of which are crucial for the pathogenesis of inflammatory diseases. Several studies have associated lower vitamin D status with increased risk and unfavorable outcome of acute infections. Vitamin D supplementation bolsters clinical responses to acute infection. Moreover, chronic inflammatory diseases, such as atherosclerosis-related cardiovascular disease, asthma, inflammatory bowel disease, chronic kidney disease, nonalcoholic fatty liver disease, and others, tend to have lower vitamin D status, which may play a pleiotropic role in the pathogenesis of the diseases. In this article, we review recent epidemiological and interventional studies of vitamin D in various inflammatory diseases. The potential mechanisms of vitamin D in regulating immune/inflammatory responses in inflammatory diseases are also discussed.
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Affiliation(s)
- Kai Yin
- Center for Clinical and Translational Science, Creighton University School of Medicine, Omaha, NE, USA
| | - Devendra K Agrawal
- Center for Clinical and Translational Science, Creighton University School of Medicine, Omaha, NE, USA
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Lack of association of vitamin D receptor gene polymorphisms/haplotypes in Sjögren’s syndrome. Clin Rheumatol 2014; 34:247-53. [DOI: 10.1007/s10067-014-2639-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Accepted: 04/17/2014] [Indexed: 10/25/2022]
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Alagarasu K, Mulay A, Sarikhani M, Rashmika D, Shah P, Cecilia D. Profile of human leukocyte antigen class I alleles in patients with dengue infection from Western India. Hum Immunol 2013; 74:1624-8. [DOI: 10.1016/j.humimm.2013.08.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 07/01/2013] [Accepted: 08/10/2013] [Indexed: 10/26/2022]
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Sortica VA, Cunha MG, Ohnishi MDO, Souza JM, Ribeiro-dos-Santos ÂKC, Santos SEB, Hutz MH. Role of IL6, IL12B and VDR gene polymorphisms in Plasmodium vivax malaria severity, parasitemia and gametocytemia levels in an Amazonian Brazilian population. Cytokine 2013; 65:42-7. [PMID: 24139871 DOI: 10.1016/j.cyto.2013.09.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Revised: 09/09/2013] [Accepted: 09/19/2013] [Indexed: 12/29/2022]
Abstract
OBJECTIVE To investigate the influence of IL6, IL12B and VDR single nucleotide polymorphisms (SNPs) in uncomplicated Plasmodium vivax infection symptoms intensity, parasitemia and gametocytemia levels in a Brazilian Amazonian population. METHODS A total of 167 malaria patients infected by P. vivax have parasitemia and gametocytemia levels estimated before treatment. Fourteen clinical symptoms were evaluated and included in a principal component analysis to derive a clinical symptom index. Patients were genotyped for IL6-174C>G, IL12B 735T>C, 458A>G, 159A>C, and VDR FokI, TaqI, BsmI SNPs by Taqman 5' nuclease assays. A General Linear Model analysis of covariance with age, gender, exposure period and infection history and genetic ancestry was performed to investigate the association of genotypes with parasitemia and gametocytemia levels and with a clinical symptom index. RESULTS Higher parasitemia levels were observed in IL6-174C carriers (p=0.02) whereas IL12B CGT haplotype carriers presented lower parasitemia levels (p=0.008). VDR TaqIC/BsmIA haplotype carriers showed higher gametocyte levels than non-carriers (p=0.013). Based on the clinical index values the IL6-174C>G polymorphism was associated with malaria severity. The IL6-174C carriers presented a more severe clinical index when compared to GG homozygotes (p=0.001). CONCLUSION The present study suggests that IL6, IL12 and VDR influence severity, parasitemia and gametocytemia clearance in P. vivax infections, and highlights their potential role in malaria immune response in an Amazonian population.
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Affiliation(s)
- Vinicius A Sortica
- Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
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Glocke M, Lang F, Schaeffeler E, Lang T, Schwab M, Lang UE. Impact of vitamin D receptor VDR rs2228570 polymorphism in oldest old. Kidney Blood Press Res 2013; 37:311-22. [PMID: 24060611 DOI: 10.1159/000350159] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/11/2013] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Calcitriol, a key player in the regulation of mineral metabolism, influences, directly or by increasing plasma Ca2+ and phosphate levels, a multitude of physiological functions, such as bone mineralization, cell proliferation, immune response, carbohydrate metabolism, blood pressure, platelet reactivity, gastric acid secretion, cognitive function and mood. Calcitriol is mainly effective by stimulation of the Vitamin D receptor VDR. The responsiveness of VDR may be affected by gene variants, such as the FokI polymorphism (rs2228570). The GG gene variant is expected to be more active than the GA or AA gene variant. The present study explored the impact of VDR rs2228570 on survival and health of oldest old individuals (> 90 years). METHODS 101 individuals > 90 years were examined and genotyped. As a result, the prevalence of GG, GA & AA was 36 (10 ♂, 26♀), 52 (24 ♂, 28♀) and 13 (4 ♂, 9♀), respectively, a prevalence not significantly different from the frequency in public available dbSNP and a population (n = 208) of young volunteers (average age 49 years). RESULTS As compared to carriers of GG, carriers of AA and/or GA displayed significantly (p<0.05) lower diastolic blood pressure (significant only in ♂), higher instrumental activity of daily life (IADL) score and more frequent hospital visits (significant only in ♂), significantly lower prevalence of depression (significant in ♀+♂), renal disease (significant only in ♀), allergy, peptic ulcer and urolithiasis (significant only in ♂), as well as significantly higher prevalence of transitoric ischemic attacks. In a younger population a German version of the NEO-FFI, allowing reliable and valid assessment of personality, revealed decreased neuroticism (significant only in ♂) and increased extraversion in AA carriers. CONCLUSION The Vitamin D receptor gene variant VDR rs2228570 has only little impact on life span but may affect a variety of pathophysiologically relevant functions including mood.
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Affiliation(s)
- Melanie Glocke
- Department of Physiology, University of Tuebingen, Germany
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