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Sun H, Shen G, Dong H, Shang M, Zhou W, Wang L, Li Z, Gong J, Hu B. Serum 25-hydroxyvitamin D level and erectile dysfunction: a causal relationship? Findings from a two-sample Mendelian randomization study. Front Mol Biosci 2024; 11:1390814. [PMID: 38933368 PMCID: PMC11200040 DOI: 10.3389/fmolb.2024.1390814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Accepted: 04/23/2024] [Indexed: 06/28/2024] Open
Abstract
Background Serum 25-hydroxyvitamin D level is associated with erectile dysfunction (ED) in observational studies. However, whether there is a causal association between them remains uncertain. Objective Conduct a two-sample Mendelian randomization (MR) analysis to investigate the causal effect between serum 25-hydroxyvitamin D level and ED risk. Method Genome-wide association study (GWAS) data of serum 25-hydroxyvitamin D levels comprising 6,896,093 single nucleotide polymorphisms (SNP) from 496,949 people of European ancestry were regarded as exposure for the MR analysis. Additional GWAS data involving 9,310,196 SNPs of 6,175 European ED cases and 217,630 controls were used as outcome data. The MR-Egger, inverse variance weighted (IVW) method, weighted median, simple mode, and weighted mode were employed to evaluate causal effects, among which IVW was the primary MR analysis method. The stability of the MR analysis results was confirmed by a heterogeneity test, a horizontal pleiotropy test, and the leave-one-out method. Result There were 103 SNPs utilized as instrumental variables (p < 5 × 10-8). The results of MR analysis showed no causal effects of serum 25(OH) D concentration on ED risks (IVW; OR = 0.9516, 95% CI = 0.7994 to 1.1328, p = 0.5772). There was no heterogeneity and pleiotropy in the statistical models. Conclusion The present MR study did not support a causal association for genetically predicted serum 25-hydroxyvitamin D concentration in the risk of ED in individuals of European descent.
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Affiliation(s)
| | | | | | | | | | | | | | - Jiao Gong
- Department of Laboratory Medicine, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Bo Hu
- Department of Laboratory Medicine, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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2
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Liu X, Wang Y, Ma L, Wang D, Peng Z, Mao Z. High prevalence of erectile dysfunction in men with hyperthyroidism: a meta-analysis. BMC Endocr Disord 2024; 24:58. [PMID: 38689308 PMCID: PMC11059661 DOI: 10.1186/s12902-024-01585-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 04/18/2024] [Indexed: 05/02/2024] Open
Abstract
OBJECTIVE The objective of this study was to evaluate the association between hyperthyroidism and the risk of developing erectile dysfunction (ED). METHODS A comprehensive search of multiple databases, including PubMed, Embase, Cochrane, and Web of Science, was conducted to identify relevant studies investigating the relationship between hyperthyroidism and ED in men. The quality of the included studies was assessed using the Newcastle‒Ottawa Quality Rating Scale, and a meta-analysis was performed using Stata 16.0 and RevMan 5.3 software. RESULTS A total of four papers encompassing 25,519 study subjects were included in the analysis. Among these, 6,429 individuals had hyperthyroidism, while 19,090 served as controls. The overall prevalence of ED in patients with hyperthyroidism was determined to be 31.1% (95% CI 0.06-0.56). In patients with uncomplicated hyperthyroidism, the incidence of ED was 21.9% (95% CI 0.05-0.38). The combined odds ratio (OR) for the four studies was 1.73 (OR: 1.73; 95% CI [1.46-2.04]; p < .00001). CONCLUSION Our findings demonstrate a higher incidence of ED in patients with hyperthyroidism. These results provide valuable information for healthcare professionals and can facilitate discussions surrounding appropriate treatment options for ED in patients with hyperthyroidism.
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Affiliation(s)
- Xiaowen Liu
- Hunan Provincial Key Laboratory of Regional Hereditary Birth Defects Prevention and Control, Changsha Hospital for Maternal & Child Health Care, Hunan Normal University, Changsha, China.
| | - Yanling Wang
- Hunan Provincial Key Laboratory of Regional Hereditary Birth Defects Prevention and Control, Changsha Hospital for Maternal & Child Health Care, Hunan Normal University, Changsha, China
| | - Li Ma
- Hunan Provincial Key Laboratory of Regional Hereditary Birth Defects Prevention and Control, Changsha Hospital for Maternal & Child Health Care, Hunan Normal University, Changsha, China
| | - Danhui Wang
- Hunan Provincial Key Laboratory of Regional Hereditary Birth Defects Prevention and Control, Changsha Hospital for Maternal & Child Health Care, Hunan Normal University, Changsha, China
| | - Zhihong Peng
- College of Health Science and Engineering, Hubei University, Wuhan, China
| | - Zenghui Mao
- Hunan Provincial Key Laboratory of Regional Hereditary Birth Defects Prevention and Control, Changsha Hospital for Maternal & Child Health Care, Hunan Normal University, Changsha, China.
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3
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Zhang JH, Li W, Wang CY, Zhang AN, Jia BZ, Li YW, Shi ZD, Tang KF, Han CH. Correlation analysis of carotid artery intima-media thickness, serum 25(OH)D and men with erectile dysfunction. Front Endocrinol (Lausanne) 2022; 13:1027430. [PMID: 36277686 PMCID: PMC9584141 DOI: 10.3389/fendo.2022.1027430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 09/20/2022] [Indexed: 11/13/2022] Open
Abstract
Our goal is to investigate the connection between serum 25(OH)D and carotid artery intima-media thickness (CIMT) in men with erectile dysfunction (ED).Serum 25(OH)D and CIMT were measured in 124 participants with erectile dysfunction and 39 healthy controls. The relationship between them and different patient-related parameters and disease-related parameters was studied. Compared with the control group and mild ED group, the level of serum 25(OH)D in moderate ED group and severe ED group decreased significantly(P<0.05). The CIMT values of moderate ED group and severe ED group were higher than those of the control group(P<0.05). The CIMT value of severe ED group was significantly higher than that of mild ED group(P<0.05). IIEF-5 score was positively correlated with serum 25(OH)D level, but negatively correlated with CIMT value(P<0.05). After adjusting for the influence of confounding factors, The CIMT values, 25(OH)D and IIEF-5 score were substantially associated(P<0.05). The serum level of 25(OH)D and IIEF-5 score were positively correlated, while the CIMT values and IIEF-5 score were negatively correlated. The level of serum 25(OH)D should be analyzed in men with ED, especially in patients with vasculogenic ED, and supplementation is recommended for those who were with vitamin D deficiency.
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Affiliation(s)
- Jun-hao Zhang
- Suzhou Medical College of Soochow University, Suzhou, China
- Department of Urology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Wei Li
- Department of Urology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Cheng-yue Wang
- Department of Urology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - An-ni Zhang
- Department of Neurology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Ben-zhong Jia
- Department of Urology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Ya-wei Li
- Department of Oncology, the Affiliated Cancer Hospital of Guizhou Medical University, Guiyang, China
| | - Zhen-duo Shi
- Department of Urology, Xuzhou Central Hospital, Xuzhou, China
| | - Kai-fa Tang
- Department of Urology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
- *Correspondence: Cong-hui Han, ; Kai-fa Tang,
| | - Cong-hui Han
- Suzhou Medical College of Soochow University, Suzhou, China
- Department of Urology, Xuzhou Central Hospital, Xuzhou, China
- *Correspondence: Cong-hui Han, ; Kai-fa Tang,
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4
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Kim HS, Cho MC. Low Serum 25-Hydroxyvitamin D Level as a Potential Risk Factor of Erectile Dysfunction in Elderly Men with Moderate to Severe Lower Urinary Tract Symptoms. World J Mens Health 2021; 40:139-148. [PMID: 33663029 PMCID: PMC8761244 DOI: 10.5534/wjmh.200176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 01/07/2021] [Accepted: 01/13/2021] [Indexed: 11/15/2022] Open
Abstract
Purpose To evaluate the correlation between vitamin D level and erectile dysfunction (ED) in male lower urinary tract symptoms (LUTS) patients. Materials and Methods We analyzed data from 534 male patients who were tested for LUTS from 2014 to 2017. LUTS severity was classified into mild (≤7) or moderate to severe (≥8) based on total IPSS scores. Vitamin D deficiency was defined as a serum 25-hydroxyvitamin D [25(OH)D] level of less than 20 ng/mL. The severity of ED was dichotomized into mild (≥17 points) or moderate to severe (≤16 points) depending on total IIEF-5 scores. The association of the serum 25(OH)D level with moderate to severe ED was assessed using logistic regression analysis. Results In the entire cohort, moderate to severe ED was significantly associated with age ≥60 years (odds ratio [OR], 1.762; 95% confidence interval [CI], 1.011–3.073) and moderate to severe LUTS (OR, 2.075; 95% CI, 1.134–3.789), but not with serum 25(OH)D level (OR, 1.001; 95% CI, 0.979–1.023). Whereas, in the subgroup consisting of moderate to severe LUTS patients over 60 years (n=223), either low serum 25(OH)D level (OR, 0.944; 95% CI, 0.903–0.986) or vitamin D deficiency (OR, 2.949; 95% CI, 1.118–7.782) was the independent risk factor of moderate to severe ED as a result of each multivariate analysis. Conclusions Low vitamin D status closely correlated with moderate to severe ED in elderly men with moderate to severe LUTS.
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Affiliation(s)
- Hyung Suk Kim
- Department of Urology, Dongguk University Ilsan Hospital, Dongguk University School of Medicine, Goyang, Korea
| | - Min Chul Cho
- Department of Urology, Seoul Metropolitan Government-Seoul National University (SMG-SNU) Boramae Medical Center, Seoul, Korea.
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5
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Horsanalı MO, Eren H, Dil E, Caglayan A, Erdogan O, Ekren F. Novel predictive risk factor of erectile dysfunction: Serum 25-hydroxy vitamin D. Andrologia 2020; 52:e13767. [PMID: 32725942 DOI: 10.1111/and.13767] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 06/15/2020] [Accepted: 06/28/2020] [Indexed: 01/02/2023] Open
Abstract
The present study aimed to investigate the association between the severity of erectile dysfunction (ED) and serum 25-hydroxy vitamin D. It also sought to determine the cut-off level of serum 25-hydroxy vitamin D for ED. This study included 130 men who had ED between 2018 and 2019. Patients were divided into three groups according to their scores on the international index of erectile function-5 (IIEF-5) Turkish validated short form questionnaire. The serum 25-hydroxy vitamin D results were compared between the groups. The mean age of the patients was 49.28 ± 13.62 years. Groups 1, 2 and 3 included 44 (33.8%) patients with severe ED, 56 (43.1%) patients with moderate ED and 30 (23.1%) patients with mild ED, respectively. Statistical significance was observed between the groups and serum 25-hydroxy vitamin D levels. A positive correlation was detected between the IIEF-5 scores, serum testosterone and serum 25-hydroxy vitamin D levels. A cut-off level for serum 25-hydroxy vitamin D was calculated as 27.32 ng/ml. During multivariate analysis, we found that serum 25-hydroxy vitamin D levels were independent prognostic risk factors for decreased IIEF-5 scores. Decreased serum 25-hydroxy vitamin D levels were associated with decreased IIEF-5 scores. Therefore, vitamin D replacement therapy may improve symptoms.
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Affiliation(s)
| | - Huseyin Eren
- Faculty of Medicine, Urology Department, Recep Tayyip Erdogan University, Rize, Turkey
| | - Eyup Dil
- Faculty of Medicine, Urology Department, Recep Tayyip Erdogan University, Rize, Turkey
| | - Alper Caglayan
- Urology Department, Cigli Region Training Hospital, İzmir, Turkey
| | - Ozgur Erdogan
- Urology Department, Cigli Region Training Hospital, İzmir, Turkey
| | - Fatih Ekren
- Urology Department, Cigli Region Training Hospital, İzmir, Turkey
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6
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Crafa A, Cannarella R, Condorelli RA, La Vignera S, Calogero AE. Is There an Association Between Vitamin D Deficiency and Erectile Dysfunction? A Systematic Review and Meta-Analysis. Nutrients 2020; 12:nu12051411. [PMID: 32422943 PMCID: PMC7284343 DOI: 10.3390/nu12051411] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/11/2020] [Accepted: 05/12/2020] [Indexed: 12/25/2022] Open
Abstract
Erectile dysfunction (ED) is found very frequently in the male population, in particular in its arteriogenic form, which also represents an important predictor of cardiovascular diseases (CVDs). Some evidence suggests that vitamin D could play a role in cardiovascular risk prevention thanks to its ability to reduce endothelial damage, oxidative stress, the production of inflammatory cytokines, and dyslipidemia. Since ED and CVDs have pathogenic mechanisms in common, numerous studies have evaluated a possible association between vitamin D deficiency (blood concentrations of 25-hydroxyvitamin D < 20 ng/mL) and ED, but with conflicting results. This meta-analysis was therefore performed to clarify the discrepancy of the data so far published. To achieve this, articles have been searched extensively in the Pubmed, MEDLINE, Cochrane, Academic One Files, Google Scholar, and Scopus databases from the first day they were created until January 2020. The search strategy included pertinent Medical Subjects Headings (MeSH) terms. Of the 431 items retrieved, only eight observational studies were included, resulting in a total sample size of 4055 patients. It was found that 25-hydroxyvitaminD (25(OH)D) levels did not show any significant difference between patients with and without ED. However, when patients with vitamin D deficiency only were taken into account, the international index of erectile function (IIEF) score for erectile dysfunction was significantly worse than in controls. This association remained significant even when eugonadal-only patients were considered. Finally, we found that eugonadal patients with severe ED have lower 25(OH)D3 levels than patients with mild ED. In conclusion, this meta-analysis suggests an association between vitamin D deficiency and the presence of severe forms of ED, independent of testicular function.
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7
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Shi W, Guo Z, Ji Y, Feng J. The protective effect of recombinant globular adiponectin on testis by modulating autophagy, endoplasmic reticulum stress and oxidative stress in streptozotocin-induced diabetic mice. Eur J Pharmacol 2020; 879:173132. [PMID: 32353359 DOI: 10.1016/j.ejphar.2020.173132] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 04/17/2020] [Accepted: 04/20/2020] [Indexed: 02/07/2023]
Abstract
This study was to investigate whether recombinant globular adiponectin produced its protective effect on the testis of diabetic mice by modulating autophagy, endoplasmic reticulum stress and oxidative stress. Male mice were randomly divided into control, diabetic, diabetic treated with low and high dose of adiponectin. Mice were killed at the termination after 4 weeks and 8 weeks of adiponectin treatment. Serum levels of glucose, lipids, testosterone, insulin, LH and FSH were measured. The protein expression of glucose-regulated protein 78 (GRP78), C/EBP homologous protein (CHOP), Caspase12, Beclin1, microtubule-associated protein light chain 3 (LC3) and p62 was determined by western blotting. The mRNA expression of adiponectin receptor 1 (AdipoR1), p22phox, p47phox, nuclear factor erythroid2-related factor 2 (Nrf2), NAD(P)H-quinone oxidoreductase 1(NQO1), heme oxygenase-1 (HO-1) and superoxide dismutase (SOD) were determined by real-time fluorescence quantitative PCR. The testicular weight, the sperm number and motility, and the serum levels of testosterone and insulin were significantly decreased in diabetic mice (P < 0.05). The expression of Beclin1, LC3, Nrf2, NQO1, HO-1, SOD and AdipoR1 were significantly decreased (P < 0.05), while the expression of GRP78, CHOP, Caspase12, p62, p22phox and p47phox were notably increased in the testes of diabetic mice (P < 0.05). Adiponectin treatment significantly reversed the above-mentioned changes in the testes of diabetic mice, some of which were dose- and time-dependent (P < 0.05). These data suggested that recombinant globular adiponectin may produce the protective effect on the testes of diabetic mice by inducing autophagy and inhibiting ER stress and oxidative stress.
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Affiliation(s)
- Wenjiao Shi
- Department of Endocrinology, Second Hospital, Shanxi Medical University, Taiyuan, 030001, China; Department of Anesthesiology, Xinhua Hospital, Shanghai Jiaotong University, Shanghai, 200092, China
| | - Zhixin Guo
- Department of Endocrinology, Second Hospital, Shanxi Medical University, Taiyuan, 030001, China.
| | - Yun Ji
- Department of Anesthesiology, Xinhua Hospital, Shanghai Jiaotong University, Shanghai, 200092, China
| | - Jingyi Feng
- Department of Endocrinology, Second Hospital, Shanxi Medical University, Taiyuan, 030001, China
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8
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Canguven O, Al Malki AH. Vitamin D and Male Erectile Function: An Updated Review. World J Mens Health 2020; 39:31-37. [PMID: 32009309 PMCID: PMC7752519 DOI: 10.5534/wjmh.190151] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 12/17/2019] [Accepted: 12/24/2019] [Indexed: 12/30/2022] Open
Abstract
Literature support that vitamin-D is important for different systems of the human body including, but not limited to endocrine and immune systems, vasculature and endothelial function of the body. Male erectile function depends on many factors and can be perceived as a health indicator of the body. Epidemiological data have shown that vitamin-D deficiency is also associated with erectile dysfunction. In this review, our aim is to interpret the mechanisms by which vitamin-D might regulate anatomy and physiology of penis. Evidence showed that vitamin-D is needed for an adequate erectile function. Briefly, vitamin-D is crucial for a better healthy body and sexual activity.
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Affiliation(s)
- Onder Canguven
- Department of Urology, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar.,Department of Urology, Weill Cornell Medicine, New York, NY, USA.
| | - Ahmad H Al Malki
- Department of Urology, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar.,Department of Urology, Qatar University, Doha, Qatar
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9
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Abstract
Vitamin D, traditionally well known for its role in maintaining optimal health through its contribution to calcium metabolism and skeletal health, has received increased attention over the past two decades, with considerable focus being placed on its nonskeletal benefits. This paper is a narrative review of the nonskeletal health benefits of vitamin D, of particular interest to inhabitants of Mediterranean countries, namely, autism, cancer, cardiovascular disease, chronic obstructive pulmonary disease, dental caries, diabetes mellitus, erectile dysfunction, hypertension, metabolic syndrome, respiratory tract infections, all-cause mortality, and pregnancy and birth outcomes, because of the relatively high incidence and/or prevalence of these disorders in this region. Currently, the best evidence is coming out of observational studies related to serum 25-hydroxyvitamin D [25(OH)D] concentrations. Vitamin D clinical trials have generally been poorly designed and conducted, usually being based on vitamin D dose rather than 25(OH)D concentration. The optimal 25(OH)D concentration is above 75 nmol/l (30 ng/ml), with even better health outcomes in the range of 100-150 nmol/l. Achieving these concentrations with vitamin D3 supplements will require 1000-4000 IU/day of vitamin D3. Sensible sun exposure should also be encouraged. Countries should also consider fortifying grain and dairy products with vitamin D3.
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Affiliation(s)
- William B Grant
- Sunlight, Nutrition, and Health Research Center, P.O. Box 641603, San Francisco, CA, 94164-1603, USA.
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10
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Darraj H, Badedi M, Poore KR, Hummadi A, Khawaji A, Solan Y, Zakri I, Sabai A, Darraj M, Mutawwam DA, Daghreeri M, Sayed S, Alaallah W, Alfadhly A, Alsabaani A. Vitamin D deficiency and glycemic control among patients with type 2 diabetes mellitus in Jazan City, Saudi Arabia. Diabetes Metab Syndr Obes 2019; 12:853-862. [PMID: 31239741 PMCID: PMC6559224 DOI: 10.2147/dmso.s203700] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 03/26/2019] [Indexed: 12/16/2022] Open
Abstract
Background: The prevalence of vitamin D deficiency (VDD) is predicted to be high in patients with type 2 diabetes mellitus (T2DM), but the exact figure is not known in Jazan, Saudi Arabia. Emerging data suggests that VDD plays a role in glycemic control. The aim of this study was to measure the prevalence of VDD among T2DM patients and to investigate its association with patients' characteristics and glycemic control in Jazan. Methods: This is an analytical cross-sectional study which recruited 309 patients with T2DM randomly from primary health care centers in Jazan. Logistic regression analysis was conducted to determine the VDD predictors and to examine the association of VDD and glycemic control. Results: The VDD prevalence was found to be 60.8% in patients with T2DM. Age, gender, diabetic retinopathy (DR), dyslipidemia, glycemic control, and obesity were significantly associated with VDD, and all except obesity were independent predictors of VDD. There was a significant negative correlation between 25-hydroxyvitamin D and HbA1c. VDD was a significant independent predictor of poor glycemic control after adjustment for hypertension, DR, diabetic neuropathy, type of diabetes medication, diabetes duration, and education level. Conclusion: In this Saudi Arabian population, VDD is highly prevalent in people with T2DM and is associated with poor glycemic control. Health education targeting patients with T2DM and national strategies regarding vitamin D fortification are needed to prevent VDD in Saudi Arabia. Earlier VDD diagnosis by health care providers may help to improve the outcome for patients with T2DM. Establishing the causal association between VDD and glycemic control and clarifying the biological role of vitamin D in T2DM are important aims for future studies.
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Affiliation(s)
- Hussain Darraj
- Jazan Health Affairs, Ministry of Health, Jazan, Saudi Arabia
- Correspondence: Hussain DarrajJazan Health Affairs, Ministry of Health, PO 1075, Abu Arish45911, Saudi ArabiaTel +96 656 717 1984Email
| | - Mohammed Badedi
- Jazan Health Affairs, Ministry of Health, Jazan, Saudi Arabia
| | - Kirsten R Poore
- Institute of Development Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | | | | | - Yahia Solan
- Medical Affairs, Jazan University Hospital, Jazan University, Jazan, Saudi Arabia
| | - Ibrahim Zakri
- Jazan Health Affairs, Ministry of Health, Jazan, Saudi Arabia
| | - Abdullah Sabai
- Jazan Health Affairs, Ministry of Health, Jazan, Saudi Arabia
| | - Majid Darraj
- Department of Internal Medicine, College of Medicine, Jazan University, Jazan, Saudi Arabia
| | | | | | - Safaa Sayed
- Jazan Health Affairs, Ministry of Health, Jazan, Saudi Arabia
| | - Wael Alaallah
- Jazan Health Affairs, Ministry of Health, Jazan, Saudi Arabia
| | | | - Abdullah Alsabaani
- Department of Family and Community Medicine, College of Medicine, King Khalid University, Abha, Saudi Arabia
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11
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Wei Y, Chen P, Chen Q, Zhu H. Serum vitamin D levels and erectile dysfunction: A systematic review and meta-analysis. Andrologia 2018; 51:e13211. [PMID: 30523636 DOI: 10.1111/and.13211] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 10/13/2018] [Accepted: 10/22/2018] [Indexed: 01/11/2023] Open
Abstract
Suboptimal levels of serum vitamin D levels have been implied to be associated with cardiovascular diseases and endothelial dysfunction, conditions closely associated with erectile dysfunction (ED). The present systematic review and meta-analysis was performed to evaluate the vitamin D levels in subjects with ED compared to controls and the 5-item version of the international index of erectile function (IIEF-5) score in subjects with vitamin D deficiency compared to those without vitamin D deficiency in order to elucidate the role of vitamin D in the pathogenesis of ED. Studies evaluating the possible association between vitamin D levels and ED were initially screened and thus included following electronic literature search of database Cochrane Library, PUBMED, EMBASE and MEDLINE. Essential article information including outcome measures was extracted from the qualified studies by two independent authors, and STATA 12.0 software was used conducted the meta-analysis. Subgroup analyses were conducted by vitamin D detection methods and sample size. The standard mean difference (SMD) as well as the 95% confidence intervals (95% CIs) was applied to estimate the outcome measures. A total of seven articles were included in our meta-analysis with a total of 4,132 subjects. Pooled estimate was in favour of increased vitamin D levels in subjects without ED with a SMD of 3.027 ng/ml, 95%CI 2.290-3.314, p = 0.000. However, subgroup analysis showed an opposite trend, after one study with a sample size over 1,000 that could possibly influence the weight balance was excluded, with a SMD of 0.267, 95%CI -0.052 to 0.585, p = 0.101. We also identified about 0.320 higher in IIEF-5 score (95%CI = 0.146-0.494, p = 0.000) in subjects without vitamin D deficiency versus with vitamin D deficiency. Nevertheless, subgroup analysis based on vitamin D detection methods obtained differential results (radioimmunoassay subgroup, SMD(95%CI) = 0.573 (0.275-0.870), p = 0.000; immunoassay subgroup, SMD(95%CI) = 0.189 (-0.025 to 0.404), p = 0.084). In conclusion, results from the present meta-analysis did not provide a strong relationship between vitamin D and the risk of ED. However, the results should be interpreted with caution and more high quality studies are warranted.
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Affiliation(s)
- Yong Wei
- Department of Urology, Nanjing Gaochun People's Hospital, Nanjing, China
| | - Peng Chen
- Department of Urology, Nanjing Gaochun People's Hospital, Nanjing, China
| | - Quanbing Chen
- Department of Urology, Nanjing Gaochun People's Hospital, Nanjing, China
| | - Hongru Zhu
- Department of Urology, Nanjing Gaochun People's Hospital, Nanjing, China
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12
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Li ZM, Liu N, Jiang YP, Yang JM, Zheng J, Sun M, Li YX, Sun T, Wu J, Yu JQ. Vitexin alleviates streptozotocin-induced sexual dysfunction and fertility impairments in male mice via modulating the hypothalamus-pituitary-gonadal axis. Chem Biol Interact 2018; 297:119-129. [PMID: 30365938 DOI: 10.1016/j.cbi.2018.10.013] [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: 06/12/2018] [Revised: 10/16/2018] [Accepted: 10/22/2018] [Indexed: 12/12/2022]
Abstract
Diabetes-associated sexual dysfunction and fertility impairments are major secondary complications in diabetic patients and animal models. Natural herbs are important sources of therapeutic agents for diabetic complications. This study investigated the effect of vitexin on male sexual dysfunction and fertility impairments in streptozotocin (STZ)-induced diabetic mice. Diabetes was induced by intraperitoneal injection of 45 mg/kg STZ for 5 consecutive days in mice. Vitexin (10, 20 or 40 mg/kg) and Sildenafil citrate (SC, 5 mg/kg) were administered daily for 62 days after the induction of diabetes. The parameters of sexual behavior and fertility were analyzed. The reproductive organ weight, sperm motility, and viability of the treated mice were examined. Testicular histopathological alterations were detected by hematoxylin and eosin (H&E) staining. Enzyme-linked immunosorbent assay (ELISA) was used to evaluate serum hormonal levels. Results showed that 40 mg/kg vitexin significantly improved the sexual behavior and fertility levels compared with the diabetic group. Moreover, vitexin (20 or 40 mg/kg) significantly increased reproductive organ weight and improved testicular pathological structure damage. Meanwhile, sperm analysis demonstrated that vitexin significantly restored sperm quality in a dose-dependent manner. Furthermore, ELISA data showed that vitexin significantly increased the serum testosterone (T), follicular-stimulating hormone (FSH), and luteinizing hormone (LH) levels but decreased the gonadotropin-releasing hormone (GnRH) level to different degrees. These findings suggest that vitexin ameliorates sexual dysfunction and fertility impairments in male diabetic mice possibly by modulating the hypothalamus-pituitary-gonadal axis.
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Affiliation(s)
- Zhi-Mei Li
- Department of Pharmacology, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, 750004, PR China
| | - Ning Liu
- Department of Pharmacology, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, 750004, PR China
| | - Ya-Ping Jiang
- Department of Pharmacology, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, 750004, PR China
| | - Jia-Mei Yang
- Department of Pharmacology, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, 750004, PR China
| | - Jie Zheng
- Department of Pharmacology, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, 750004, PR China
| | - Miao Sun
- Key Laboratory of Fertility Preservation and Maintenance of Ministry Education, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, 750004, PR China
| | - Yu-Xiang Li
- College of Nursing, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, 750004, PR China
| | - Tao Sun
- Ningxia Key Laboratory of Craniocerebral Diseases of Ningxia Hui Autonomous Region, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, 750004, PR China
| | - Jing Wu
- Key Laboratory of Fertility Preservation and Maintenance of Ministry Education, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, 750004, PR China.
| | - Jian-Qiang Yu
- Department of Pharmacology, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, 750004, PR China; Ningxia Hui Medicine Modern Engineering Research Center and Collaborative Innovation Center, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, 750004, PR China.
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Krysiak R, Szwajkosz A, Okopień B. The effect of low vitamin D status on sexual functioning and depressive symptoms in apparently healthy men: a pilot study. Int J Impot Res 2018; 30:224-229. [PMID: 29973697 DOI: 10.1038/s41443-018-0041-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 03/05/2018] [Accepted: 04/29/2018] [Indexed: 12/15/2022]
Abstract
Hypovitaminosis D is associated with sexual dysfunction in apparently healthy women and with erectile dysfunction in men with the presence of concomitant disorders. This study was aimed at investigating sexual functioning and depressive symptoms in young men with low vitamin D status. The study included 15 apparently healthy men (18-40 years old) with vitamin D deficiency (group A), 16 subjects with vitamin D insufficiency (group B), and 16 men with normal vitamin D status (group C). All participants of the study completed questionnaires investigating their sexual function (the International Index of Sexual Function-15-IIEF-15 for heterosexual men), as well as the presence and severity of depressive symptoms (Beck Depression Inventory-Second Edition-BDI-II). Compared with healthy men, subjects with vitamin D deficiency obtained lower scores for erectile function, orgasmic function, and sexual desire, while individuals with vitamin D insufficiency lower scores only for erectile function. Erectile dysfunction was more prominent in group A than group B. The total BDI-II score was higher in group A than in the other study groups. The results of the study suggest that low vitamin D status impairs male sexual functioning and severity of sexual dysfunction correlates with the degree of hypovitaminosis D.
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Affiliation(s)
- Robert Krysiak
- Department of Internal Medicine and Clinical Pharmacology, Medical University of Silesia, Katowice, Poland.
| | - Anna Szwajkosz
- Oncology Ward, Beskid Oncology Centre-John Paul II Municipal Hospital in Bielsko-Biała, Bielsko-Biała, Poland
| | - Bogusław Okopień
- Department of Internal Medicine and Clinical Pharmacology, Medical University of Silesia, Katowice, Poland
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14
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Effects of Vitamin D Restricted Diet Administered during Perinatal and Postnatal Periods on the Penis of Wistar Rats. BIOMED RESEARCH INTERNATIONAL 2018; 2018:6030646. [PMID: 29850540 PMCID: PMC5937572 DOI: 10.1155/2018/6030646] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 03/19/2018] [Indexed: 01/08/2023]
Abstract
Vitamin D deficiency is common in pregnant women and infants. The present study aimed to investigate the effects of vitamin D restricted diet on the Wistar rats offspring penis morphology. Mother rats received either standard diet (SC) or vitamin D restricted (VitD) diet. At birth, offspring were divided into SC/SC (from SC mothers, fed with SC diet) and VitD/VitD (from VitD mothers, fed with VitD diet). After euthanasia the penises were processed for histomorphometric analysis. The VitD/VitD offspring displayed metabolic changes and reduction in the cross-sectional area of the penis, corpus cavernosum, tunica albuginea, and increased area of the corpus spongiosum. The connective tissue, smooth muscle, and cell proliferation percentages were greater in the corpus cavernosum and corpus spongiosum in the VitD/VitD offspring. The percentages of sinusoidal spaces and elastic fibers in the corpus cavernosum decreased. The elastic fibers in the tunica albuginea of the corpus spongiosum in the VitD/VitD offspring were reduced. Vitamin D restriction during perinatal and postnatal periods induced metabolic and structural changes and represented important risk factors for erectile dysfunction in the penis of the adult offspring. These findings suggest that vitamin D is an important micronutrient in maintaining the cytoarchitecture of the penis.
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15
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Tirabassi G, Sudano M, Salvio G, Cutini M, Muscogiuri G, Corona G, Balercia G. Vitamin D and Male Sexual Function: A Transversal and Longitudinal Study. Int J Endocrinol 2018; 2018:3720813. [PMID: 29531528 PMCID: PMC5817208 DOI: 10.1155/2018/3720813] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND The effects of vitamin D on sexual function are very unclear. Therefore, we aimed at evaluating the possible association between vitamin D and sexual function and at assessing the influence of vitamin D administration on sexual function. METHODS We retrospectively studied 114 men by evaluating clinical, biochemical, and sexual parameters. A subsample (n = 41) was also studied longitudinally before and after vitamin D replacement therapy. RESULTS In the whole sample, after performing logistic regression models, higher levels of 25(OH) vitamin D were significantly associated with high values of total testosterone and of all the International Index of Erectile Function (IIEF) questionnaire parameters. On the other hand, higher levels of total testosterone were positively and significantly associated with high levels of erectile function and IIEF total score. After vitamin D replacement therapy, total and free testosterone increased and erectile function improved, whereas other sexual parameters did not change significantly. At logistic regression analysis, higher levels of vitamin D increase (Δ-) were significantly associated with high values of Δ-erectile function after adjustment for Δ-testosterone. CONCLUSIONS Vitamin D is important for the wellness of male sexual function, and vitamin D administration improves sexual function.
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Affiliation(s)
- Giacomo Tirabassi
- Division of Endocrinology, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Via Conca 71, Umberto I Hospital, 60126 Ancona, Italy
| | - Maurizio Sudano
- Diabetology and Endocrinology Unit, S. Maria della Misericordia General Hospital, Via Comandino 70, 61029 Urbino, Italy
| | - Gianmaria Salvio
- Division of Endocrinology, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Via Conca 71, Umberto I Hospital, 60126 Ancona, Italy
| | - Melissa Cutini
- Division of Endocrinology, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Via Conca 71, Umberto I Hospital, 60126 Ancona, Italy
| | | | - Giovanni Corona
- Endocrinology Unit, Maggiore-Bellaria Hospital, Medical Department, Azienda USL di Bologna, Bologna, Italy
| | - Giancarlo Balercia
- Division of Endocrinology, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Via Conca 71, Umberto I Hospital, 60126 Ancona, Italy
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Akarsu M, Atalay HA, Canat L, Ozcan M, Arman Y, Aydın S, Cil E, Kutlu O, Tükek T. Endocan is markedly overexpressed in severe erectile dysfunction. Andrologia 2017; 50. [DOI: 10.1111/and.12912] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/09/2017] [Indexed: 12/18/2022] Open
Affiliation(s)
- M. Akarsu
- Department of Internal Medicine; Okmeydanı Training and Research Hospital; Sisli-Istanbul Turkey
| | - H. A. Atalay
- Department of Urology; Okmeydanı Training and Research Hospital; Sisli-Istanbul Turkey
| | - L. Canat
- Department of Urology; Okmeydanı Training and Research Hospital; Sisli-Istanbul Turkey
| | - M. Ozcan
- Department of Internal Medicine; Okmeydanı Training and Research Hospital; Sisli-Istanbul Turkey
| | - Y. Arman
- Department of Internal Medicine; Okmeydanı Training and Research Hospital; Sisli-Istanbul Turkey
| | - S. Aydın
- Department of Internal Medicine; Okmeydanı Training and Research Hospital; Sisli-Istanbul Turkey
| | - E. Cil
- Department of Internal Medicine; Okmeydanı Training and Research Hospital; Sisli-Istanbul Turkey
| | - O. Kutlu
- Department of Internal Medicine; Okmeydanı Training and Research Hospital; Sisli-Istanbul Turkey
| | - T. Tükek
- Department of Internal Medicine; Okmeydanı Training and Research Hospital; Sisli-Istanbul Turkey
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Vitamin D deficiency is independently associated with greater prevalence of erectile dysfunction: The National Health and Nutrition Examination Survey (NHANES) 2001-2004. Atherosclerosis 2016; 252:61-67. [PMID: 27505344 DOI: 10.1016/j.atherosclerosis.2016.07.921] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 07/07/2016] [Accepted: 07/26/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND AIMS Erectile dysfunction (ED) and atherosclerotic cardiovascular disease (ASCVD) share many common risk factors, and vascular ED is a marker for increased ASCVD risk. Low 25-hydroxyvitamin D [25(OH)D] concentrations have been associated with increased ASCVD risk, but less is known regarding the relationship of low 25(OH)D with ED. We determined whether 25(OH)D deficiency is associated with ED independent of ASCVD risk factors. METHODS We performed cross-sectional analyses of 3390 men aged ≥20 years free of ASCVD who participated in NHANES 2001-2004. Serum 25(OH)D was measured by the DiaSorin radioimmunoassay; deficiency was defined as levels <20 ng/ml (<50 nmol/L). Self-reported ED, assessed by a single validated question, was defined as men who reported being "never" or "sometimes able" to maintain an erection. We assessed the relationship between 25(OH)D deficiency and ED prevalence using adjusted Poisson regression methods. RESULTS After accounting for NHANES sampling, the weighted prevalence of 25(OH)D deficiency and of ED were 30% and 15.2%, respectively. 25(OH)D levels were lower in men with vs. those without ED (mean 22.8 vs 24.3 ng/mL, respectively; p = 0.0005). After adjusting for lifestyle variables, comorbidities, and medication use, men with 25(OH)D deficiency had a higher prevalence of ED compared to those with levels ≥30 ng/ml (Prevalence Ratio 1.30, 95% CI 1.08-1.57). CONCLUSION In this cross-sectional analysis of a representative sample of U.S. men, vitamin D deficiency was associated with an increased prevalence of ED independent of ASCVD risk factors. Additional research is needed to evaluate whether treating vitamin D deficiency improves erectile function.
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