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| 1 | Serum vitamin D content is associated with semen|parameters and serum testosterone levels in men显示文摘The present study aimed to evaluate the influence of serum vitamin D levels on semen quality and testosterone levels.This is a crosssectional study conducted at Androscience,Science and Innovation Center in Andrology and High-Complex Clinical and Andrology Laboratory in Sao Paulo,Brazil,with 508 male patients,aged 18-60 years,from 2007 to 2017.Seminal parameters and serum sexual hormones were correlated with serum vitamin D concentrations in 260 men selected by strict selection criteria.Patients were divided into normozoospermic group(NZG,n=124)and a group with seminal abnormalities(SAG,n=136).Evaluation included complete physical examination,past medical history,habits and lifestyle factors,two complete seminal analysis with sperm functional tests,serum levels of 25-hydroxy-vitamin D_(3)(25(OH)VD_(3)),total and free testosterone,luteinizing hormone(LH),follicle-stimulating hormone(FSH),sex hormone-binding globulin(SHBG),total cholesterol,homeostatic model assessment of insulin resistance(HOMA-IR)index,and karyotype.The mean concentration of 25(OH)VD_(3)was significantly lower in the SAG(P<0.001)and positively correlated with all baseline seminal parameters and total testosterone levels.In addition,serum vitamin D_(3)concentration was found to be positively correlated with sperm concentration(β=2.103;P<0.001),total number of spermatozoa with progressive motility(β=2.069;P=0.003),total number of motile spermatozoa(β=2.571;P=0.015),and strict morphology(β=0.056;P=0.006),regardless of other variables.This is the first comparative study to address the issue of serum vitamin D_(3)content between normozoospermic patients and those with sperm abnormalities.It clearly demonstrates a direct and positive relationship between serum vitamin D level and overall semen quality,male reproductive potential,and testosterone levels. | Inari M Ciccone Elaine MF Costa Juliana R Pariz Thiago A Teixeira Joel R Drevet Parviz Gharagozloo Robert J Aitken Jorge Hallak | 2021 | Asian Journal of Andrology2021，23，1： | 2 |
| 2 | The revival of colistin: An old antibiotic for the 21st century 显示文摘 | Nasnas R Saliba G Hallak P | 2009 | Pathologie Biologie2009，57，3： | 1 |
| 3 | Electro- myographic analysis of masseter and temporal muscles, bite force, masticatory efficiency in medicated individu- als with schizophrenia and mood disorders compared with healthy controls 显示文摘 | DE Oliveira R H Hallak J E Siessere S | 2014 | J Oral Rehabil2014，41，6： | 1 |
| 4 | Perpheral magnesium sulfate enters the brain and increases the threshold for hippocampal seizures in rats显示文摘 | Hallak M Berman R F Irdenkauf S M | 1992 | Am J Obstet Cynecol1992，167，6： | 1 |
| 5 | Refecoxib reduces polyp recurrence in in familial polyposis显示文摘 | Hallak A Alin-Buron L Sharir R | 2003 | Dig Dis Sci2003，48，10： | 1 |
| 6 | Lindsay The Place Identity-Performance relationship among tourism entrepreneurs:A structural equation modeling analysis显示文摘 | Hallak R Brown G Noel J | | 0，，01： | 1 |
| 7 | Creatine Kinase as an indicator of sperm quality and maturity in men with oligospermia显示文摘 | Hallak J Sharma R K Pasqualotto F F | 2001 | Urology2001，58，3： | 1 |
| 8 | Arandomized com-parison of prostaglandin E2, oxytocin, and double-balloon devicein inducing labor显示文摘 | Atad J Hallak M Auslender R | 1996 | Obstet Gynecol1996，87，2： | 1 |
| 9 | A randomized comparison of prostaglandin E2, oxytocin, and the double-balloon de - vice in inducing labor显示文摘 | Atad J Hallak M Auslender R | 1996 | Obstet Gynecol1996，87，： | 1 |
| 10 | The place identity-performance relationship among tourism entrepreneurs: A structural equation modeling analysis 显示文摘 | Hallak R Brown G Lindsay N | 2012 | Tourism Management2012，33，1： | 1 |
| 11 | The efficacy of Lactobacillus reuteri ATCC 55730 in the treatment of patients with irritable bowel syndrome-a double blind, placebo- controlled, randomized study 显示文摘 | Niv E Naftali T Hallak R | 2005 | Clin Nutr2005，24，6： | 1 |
| 12 | Factor Structureof Bech' s Version of the Brief Psychiatric Rating Scale inBrazilian Patients 显示文摘 | Crippa J A Sanches R F’Hallak J E | 2002 | Braz J Med Biol Res2002，35，10： | 1 |
| 13 | The efficacy of Lactobacillus reuteri ATCC 55730 in the treatment of patients with irritable bowel syndrome一a double blind,placebo-controlled,randomized study显示文摘 | Niv E Naftali T Hallak R | 2005 | Clin Nutr2005，24，： | 1 |
| 14 | The Place Identity-Performance relationship among tourism entrepreneurs: A structural equation modelling analysis 显示文摘 | Hallak R Brown G Noel J L | 2012 | Tourism Management2012，33，1： | 1 |
| 15 | HLA-G antigen and parturition: maternal serum, fetal serum and amniotic fluid levels during pregnancy 显示文摘 | HACKMON R HALLAK M KRUP M | 2004 | Fetal Diagn Ther2004，19，5： | 1 |
| 16 | p53 genetic alterations, protein expression and autoantibodies in human colorectal carcinoma: a comparative study显示文摘 | Hallak R Mueller J Lotter O | 1998 | Int J Oncol1998，12，6： | 1 |
| 17 | The place identity-performance relationship among tourism entrepreneurs: A structural equation modelling analysis显示文摘 | Hallak R Brown G Lindsay N J | 2012 | Tourism Management2012，33，1： | 1 |
| 18 | The Place Identity- Performance Relationship among Tourism Entrepreneurs: a Structural Equation Modelling Analysis 显示文摘 | Hallak R Brown G Lindsay N J | 2012 | Tourism Management2012，33，1： | 1 |
| 19 | A randomized comparison of prostaglandin E2,oxytocin,and the double-balloon device in inducing labor显示文摘 | Atad J Hallak M Auslender R | 1996 | Obstet Gynecol1996，87，2： | 1 |
| 20 | Price Fairness Perceptions and Hotel Customers' Behavioral Intentions 显示文摘 | EL HADDAD R HALLAK R ASSAKER G | 2015 | Journal of Vacation Marketing2015，21，3： | 1 |
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