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Wu Y, Li H, Qin Y. S100A4 promotes the progression of lipopolysaccharide-induced acute epididymitis in mice†. Biol Reprod 2021; 102:1213-1224. [PMID: 32072170 DOI: 10.1093/biolre/ioaa022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 02/11/2020] [Accepted: 02/17/2020] [Indexed: 12/19/2022] Open
Abstract
S100A4 has been suggested to be a critical regulator of tumor metastasis and is implicated in the progression of inflammation. The aim of this study is to investigate the expression and possible role of S100A4 in epididymitis. Using a mouse model of epididymitis induced by the injection of lipopolysaccharide (LPS) in the deferent duct, we found that LPS administration induced an upregulation of S100a4 transcription (P < 0.05) and a recruitment of S100A4 positive cells in the epididymal interstitium of wild type (WT) mice. Co-immunofluorescence showed that S100A4 was mainly expressed by granulocytes, CD4 lymphocytes, and macrophages. Deficiency of S100A4 reduced epididymal pathological reaction and the mRNA levels of the pro-inflammatory cytokines IL-1β and TNF-α (P < 0.01), suggesting that S100A4 promotes the progression of epididymitis. Furthermore, S100A4 deficiency alleviated the decline of sperm motility and rectified the abnormal expression of sperm membrane protein AMAD3, which suggested that in the progression of epididymitis, S100A4 aggravates the damage to sperm vitality. In addition, both Ki-67 marked cell proliferation and transferase-mediated dUTP-biotin nick end labeling detected cell apoptosis were reduced in S100a4-/- mice compared with WT mice after LPS treatment, indicating that S100A4 promotes both cell proliferation and cell apoptosis in epididymitis. Overall, these results demonstrate that S100A4 promotes the progression of LPS-induced epididymitis and facilitates a decline in sperm vitality, and its function may be related to the process of cell proliferation and apoptosis during inflammation.
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Affiliation(s)
- Yingjie Wu
- National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, People's Republic of China
| | - Haoran Li
- National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, People's Republic of China
| | - Yinghe Qin
- National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, People's Republic of China
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2
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Torres PJ, Luque EM, Di Giorgio NP, Ramírez ND, Ponzio MF, Cantarelli V, Carlini VP, Lux-Lantos V, Martini AC. Fetal Programming Effects of a Mild Food Restriction During Pregnancy in Mice: How Does It Compare to Intragestational Ghrelin Administration? Reprod Sci 2021; 28:3547-3561. [PMID: 33856666 DOI: 10.1007/s43032-021-00574-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 04/02/2021] [Indexed: 12/19/2022]
Abstract
To explore in mice if a 15% food restriction protocol during pregnancy programs the offspring postnatal development, with emphasis on reproductive function, and to assess if ghrelin (Ghrl) administration to mouse dams exerts effects that mimic those obtained under mild caloric restriction. Mice were 15% food-restricted, injected with 4 nmol/animal/day of Ghrl, or injected with the vehicle (control) thorough pregnancy. After birth, the pups did not receive further treatment. Pups born from food-restricted dams (FR pups) were lighter than Ghrl pups at birth, but reached normal weight at adulthood. Ghrl pups were heavier at birth and gained more weight than control pups (C pups). This effect was not associated with plasma IGF-1. FR pups showed a delay in pinna detachment and eye opening, while an advance was observed in Ghrl pups. FR pups showed also impairment in the surface-righting reflex. In both female FR and Ghrl pups, there was an advance in vaginal opening and, in adulthood, FR pups showed a significant decrease in their own litter size and plasma progesterone, and an increase in embryo loss. A delay in testicular descent was evident in male Ghrl pups. Changes in puberty onset were not associated with differences in the expression of Kiss1 in hypothalamic nuclei. Finally, in adulthood, FR pups showed a significant decrease in sperm quality. In conclusion, a mild food restriction thorough gestation exerted programming effects on the offspring, affecting also their reproductive function in adulthood. These effects were not similar to those of intragestational Ghrl administration.
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Affiliation(s)
- Pedro Javier Torres
- Instituto de Fisiología, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, e Instituto de Investigaciones en Ciencias de la Salud (INICSA; CONICET-UNC), Santa Rosa 1085, X5000ESU, Córdoba, Argentina
| | - Eugenia Mercedes Luque
- Instituto de Fisiología, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, e Instituto de Investigaciones en Ciencias de la Salud (INICSA; CONICET-UNC), Santa Rosa 1085, X5000ESU, Córdoba, Argentina
| | - Noelia Paula Di Giorgio
- Laboratorio de Neuroendocrinología, Instituto de Biología y Medicina Experimental, (IBYME; CONICET), Vuelta de Obligado 2490, Buenos Aires, C1428ADN, Argentina
| | - Nicolás David Ramírez
- Instituto de Fisiología, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, e Instituto de Investigaciones en Ciencias de la Salud (INICSA; CONICET-UNC), Santa Rosa 1085, X5000ESU, Córdoba, Argentina
| | - Marina Flavia Ponzio
- Instituto de Fisiología, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, e Instituto de Investigaciones en Ciencias de la Salud (INICSA; CONICET-UNC), Santa Rosa 1085, X5000ESU, Córdoba, Argentina
| | - Verónica Cantarelli
- Instituto de Fisiología, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, e Instituto de Investigaciones en Ciencias de la Salud (INICSA; CONICET-UNC), Santa Rosa 1085, X5000ESU, Córdoba, Argentina
| | - Valeria Paola Carlini
- Instituto de Fisiología, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, e Instituto de Investigaciones en Ciencias de la Salud (INICSA; CONICET-UNC), Santa Rosa 1085, X5000ESU, Córdoba, Argentina
| | - Victoria Lux-Lantos
- Laboratorio de Neuroendocrinología, Instituto de Biología y Medicina Experimental, (IBYME; CONICET), Vuelta de Obligado 2490, Buenos Aires, C1428ADN, Argentina
| | - Ana Carolina Martini
- Instituto de Fisiología, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, e Instituto de Investigaciones en Ciencias de la Salud (INICSA; CONICET-UNC), Santa Rosa 1085, X5000ESU, Córdoba, Argentina.
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3
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Farag NA, Mohamed AS, El Sayed HF, Salah EL-Din EY, Tawfik ARA. Echinochrome Pigment Improves Male Rats' Fertility. ACTA ACUST UNITED AC 2020. [DOI: 10.2174/2210315510999201116205519] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background::
Infertility is the first-rate public health trouble affecting one in five married couples globally, male causes embody a significant proportion. Natural products could be an alternative or complementary inexpensive treatment for such matters. Echinochrome (Ech) is a natural quinone pigment obtained from sea urchin, and it was confirmed to possess many pharmacological properties due to its chemical activity.
Objective::
The current research paper was targeted to evaluate the potential effects of Ech on male fertility, and to highlight the possible involved mechanisms.
Methods::
Eighteen adult male rats were randomly distributed into three groups: control (1 ml of 2% DMSO, p.o.), low dose Ech (0.1 mg/kg, p.o.), and high dose Ech (1 mg/kg p.o.).
Results::
The high dose Ech caused a significant decline in the levels of glucose, ALT, AST, ALP, urea, Cr, uric acid, TG, TC and LDL-C and testicular tissue MDA, while it caused a significant rise in the levels of albumin, TP, HDL-C, FSH, LH, testosterone and testicular tissue GSH activity. Moreover, it showed a significant positive effect on the testis weight, caudal epididymis weight, sperm count, sperm motility, sperm morphology, fructose concentration, and α-glucosidase activity. However, no significant changes were observed in histological examination of testicular tissue among all groups.
Conclusion::
High dose Ech improved male rat-fertility either directly by activating the pituitary gonadal axis, and or indirectly via enhancing: the renal and hepatic functions, the lipid profile and or the antioxidant pathways.
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Affiliation(s)
- Neveen Asmet Farag
- Comparative Anatomy and Embryology- Zoology Department - Faculty of Science - Cairo University-, Egypt
| | - Ayman S Mohamed
- Lecturer of Physiology- Zoology Department - Faculty of Science - Cairo University-12613, Giza,, Egypt
| | | | - Eman Y. Salah EL-Din
- Lecturer of Comparative Anatomy and Embryology- Zoology Department - Faculty of Science - Cairo University;, Egypt
| | - Abdel Rahman A. Tawfik
- Comparative Anatomy and Embryology- Zoology Department - Faculty of Science - Cairo University-, Egypt
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4
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Wang PT, Sudirman S, Hsieh MC, Hu JY, Kong ZL. Oral supplementation of fucoxanthin-rich brown algae extract ameliorates cisplatin-induced testicular damage in hamsters. Biomed Pharmacother 2020; 125:109992. [PMID: 32084700 DOI: 10.1016/j.biopha.2020.109992] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 01/17/2020] [Accepted: 01/31/2020] [Indexed: 12/28/2022] Open
Abstract
Oxidative stress is recognized as a common pathology that affects up to half of all men infertile. Fucoxanthin possesses antioxidant activity, and several investigators have reported anti-inflammatory action. This study extracted powder of Sargassum glaucescens by acetone to obtained fucoxanthin rich-brown algae extract (FXE). The objective of this study was to evaluate the ameliorative effects of fucoxanthin extract from Sargassum glaucescens on lipopolysaccharide-induced inflammation in RAW264.7 macrophage cells and its protective effects of against Cisplatin (CP)-induced reproductive damage in hamsters. Eighty male Syrian hamsters were injected with and without CP, then daily oral gavage with various concentrations of fucoxanthin for 5 days. Treatment with FXE reduced the level of reactive oxygen species and malondialdehyde in RAW 264.7 cells and the rats' testis as well as protective effects on mitochondrial membrane potential. The FXE administration also improved testosterone level and alpha-glucosidase activity. The sperm count also increased after treated with FXE, whereas sperm abnormality was reduced. Histopathological analysis showed that FXE successfully improved the seminiferous tubules morphology. According to these findings, fucoxanthin extract from Sargassum glaucescens can be used as an alternative for the treatment of testicular damage.
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Affiliation(s)
- Pei-Tzu Wang
- Department of Food Science, National Taiwan Ocean University, No.2, Peining Rd., Jhongjheng District, Keelung City, 20224, Taiwan.
| | - Sabri Sudirman
- Department of Food Science, National Taiwan Ocean University, No.2, Peining Rd., Jhongjheng District, Keelung City, 20224, Taiwan.
| | - Ming-Chou Hsieh
- Department of Food Science, National Taiwan Ocean University, No.2, Peining Rd., Jhongjheng District, Keelung City, 20224, Taiwan.
| | - Jia-Yuan Hu
- Department of Food Science, National Taiwan Ocean University, No.2, Peining Rd., Jhongjheng District, Keelung City, 20224, Taiwan.
| | - Zwe-Ling Kong
- Department of Food Science, National Taiwan Ocean University, No.2, Peining Rd., Jhongjheng District, Keelung City, 20224, Taiwan.
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5
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You F, Ruan L, Zeng L, Zhang Y. Efficacy and safety of acupuncture for the treatment of oligoasthenozoospermia: A systematic review. Andrologia 2019; 52:e13415. [PMID: 31670423 DOI: 10.1111/and.13415] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 07/23/2019] [Accepted: 08/12/2019] [Indexed: 12/20/2022] Open
Abstract
Oligoasthenozoospermia is a common factor leading to male infertility. Acupuncture has been applied for treating male infertility for several thousand years in China, but clinical evidence of its efficacy and safety in treating oligoasthenozoospermia is yet to be established. This review aimed to systematically assess the evidence on the effect of acupuncture in males with oligoasthenozoospermia. Databases (PubMed, EMBASE, SINOMED, CNKI, Wanfang database and Cochrane Library) were searched to identify related studies published before 30th June 2019. The Cochrane risk of bias tool and Jadad score was adopted to assess the methodological quality of included studies. Twelve randomised controlled trials (RCTs) with 1,088 participants were included in this review. The aim of this study was to perform a meta-analysis, but it was not possible due to considerable clinical heterogeneity among the included studies. According to the narrative analysis, acupuncture or acupuncture combined with another intervention was effective in improving the semen quality based on the included studies. However, this result should be interpreted with caution due to high risk. The methodological quality of most included studies was low. The current evidence on acupuncture for oligoasthenozoospermia is inadequate to draw a solid conclusion due to the poor methodological quality. Rigorous full-scale RCTs are needed to validate the therapeutic efficacy and safety of acupuncture in treating oligoasthenozoospermia.
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Affiliation(s)
- Fang You
- The Second Clinical College, Guizhou University of Chinese Medicine, Guiyang, China
| | | | - Li Zeng
- The Second Clinical College, Guizhou University of Chinese Medicine, Guiyang, China
| | - Yan Zhang
- Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
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6
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Bianconi S, Stutz G, Solís MR, Martini AC, Vincenti LM, Ponzio MF, Luque E, Avendaño C, Quiroga P, Santillán ME. Maternal and postnatal high-fat diets with high ω6 : ω3 ratios affect the reproductive performance of male offspring in the mouse. Reprod Fertil Dev 2019; 30:1491-1502. [PMID: 29791833 DOI: 10.1071/rd17552] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 04/17/2018] [Indexed: 12/15/2022] Open
Abstract
High-fat diets (HFDs) are an acknowledged risk factor for male subfertility, but the underlying mechanisms remain unclear. In the present study we compared the effects of two HFDs with different ω6:ω3 ratios, one enriched with soy oil (SOD; ω6:ω3=9.62) and another enriched with sunflower oil (SFOD; ω6:ω3=51.55), with those of a commercial diet (CD; ω6:ω3=19.87), supplied from pregnancy to adulthood, on morphometric parameters and reproductive performance in adult male mice (recommended ω6:ω3 for rodents=1-6). Bodyweight was significantly higher in the SFOD than CD group, and relative testicular weight was significantly lower in the SFOD than the other two groups. SFOD altered sperm performance: it reduced sperm viability (mean±s.e.m.; 76.00±1.35% vs 82.50±1.45% and 80.63±1.00% in the SFOD vs CD and SOD groups respectively; P<0.05) and increased the percentage of immature spermatozoa (71.88±7.17% vs 51.38±5.87% and 48.00±5.72% in the SFOD vs CD and SOD groups respectively; P<0.05). The epididymal ω6:ω3 ratio was higher in the SFOD versus CD and SOD groups, whereas the unsaturation index was higher in the SOD and SFOD groups than in CD group. Sperm membrane integrity was diminished in both the SOD and SFOD groups, but there was no difference in sperm reactive oxygen species production in these two groups compared with the CD group. The fertilisation rate was lower in the SFOD compared with the CD and SOD groups. In conclusion, although both HFDs affected sperm quality, the fertilising ability was more altered by the excessive dietary ω6:ω3 ratio than by the net ω6 content.
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Affiliation(s)
- S Bianconi
- Instituto y Cátedra de Fisiología Humana, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU - Córdoba, Argentina
| | - G Stutz
- Instituto y Cátedra de Fisiología Humana, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU - Córdoba, Argentina
| | - M R Solís
- Instituto y Cátedra de Fisiología Humana, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU - Córdoba, Argentina
| | - A C Martini
- Instituto y Cátedra de Fisiología Humana, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU - Córdoba, Argentina
| | - L M Vincenti
- Instituto y Cátedra de Fisiología Humana, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU - Córdoba, Argentina
| | - M F Ponzio
- Instituto y Cátedra de Fisiología Humana, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU - Córdoba, Argentina
| | - E Luque
- Instituto y Cátedra de Fisiología Humana, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU - Córdoba, Argentina
| | - C Avendaño
- Instituto y Cátedra de Fisiología Humana, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU - Córdoba, Argentina
| | - P Quiroga
- Cátedra de Biología Celular, Histología y Embriología, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Av. Enrique Barros y Enfermera Gordillo s/n, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - M E Santillán
- Instituto y Cátedra de Fisiología Humana, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU - Córdoba, Argentina
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7
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Qiu Z, Chu Q, Zhang W, Luo C, Quan S. Level of neutral alpha-1,4-glucosidase in seminal plasma of Chinese men. Andrologia 2017; 50. [PMID: 29282757 DOI: 10.1111/and.12948] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/01/2017] [Indexed: 11/29/2022] Open
Affiliation(s)
- Z. Qiu
- Department of Obstetrics and Gynecology; Center for Reproductive Medicine; Nanfang Hospital; Southern Medical University; Guangzhou China
| | - Q. Chu
- Department of Obstetrics and Gynecology; Center for Reproductive Medicine; Nanfang Hospital; Southern Medical University; Guangzhou China
| | - W. Zhang
- Department of Obstetrics and Gynecology; Center for Reproductive Medicine; Nanfang Hospital; Southern Medical University; Guangzhou China
| | - C. Luo
- Department of Obstetrics and Gynecology; Center for Reproductive Medicine; Nanfang Hospital; Southern Medical University; Guangzhou China
| | - S. Quan
- Department of Obstetrics and Gynecology; Center for Reproductive Medicine; Nanfang Hospital; Southern Medical University; Guangzhou China
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Xu Y, Lee J, Park YD, Yang JM, Zheng J, Zhang Q. Molecular dynamics simulation integrating the inhibition kinetics of hydroxysafflor yellow A on α-glucosidase. J Biomol Struct Dyn 2017; 36:830-840. [DOI: 10.1080/07391102.2017.1300544] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yingying Xu
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Jinhyuk Lee
- Korean Bioinformation Center (KOBIC), Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Korea
- Department of Nanobiotechnology and Bioinformatics, University of Sciences and Technology, Daejeon 305-350, Korea
| | - Yong-Doo Park
- Zhejiang Provincial Key Laboratory of Applied Enzymology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing 314006, P.R. China
| | - Jun-Mo Yang
- Department of Dermatology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 135-710, Korea
| | - Jimin Zheng
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Qian Zhang
- School of Preclinical Medicine, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
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Luque EM, Tissera A, Gaggino MP, Molina RI, Mangeaud A, Vincenti LM, Beltramone F, Larcher JS, Estofán D, Fiol de Cuneo M, Martini AC. Body mass index and human sperm quality: neither one extreme nor the other. Reprod Fertil Dev 2017; 29:731-739. [DOI: 10.1071/rd15351] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Accepted: 11/17/2015] [Indexed: 12/30/2022] Open
Abstract
The aim of the present study was to investigate the still contentious association between body mass index (BMI) and seminal quality. To this end, 4860 male patients (aged 18–65 years; non-smokers and non-drinkers), were classified according to BMI as either underweight (UW; BMI <20 kg m–2; n = 45), normal weight (NW; BMI 20–24.9 kg m–2; n = 1330), overweight (OW; BMI 25–29.9 kg m–2; n = 2493), obese (OB; BMI 30–39.9 kg m–2; n = 926) or morbidly obese (MOB; BMI ≥40 kg m–2; n = 57). Conventional semen parameters and seminal concentrations of fructose, citric acid and neutral α-glucosidase (NAG) were evaluated. The four parameters that reflect epididymal maturation were significantly lower in the UW and MOB groups compared with NW, OW and OB groups: sperm concentration, total sperm count (103.3 ± 11.4 and 121.5 ± 20.6 and vs 157.9 ± 3.6, 152.4 ± 2.7 or 142.1 ± 4.3 spermatozoa ejaculate–1 respectively, P < 0.05), motility (41.8 ± 2.5 and 42.6 ± 2.6 vs 47.8 ± 0.5, 48.0 ± 0.4 or 46.3 ± 0.6 % of motile spermatozoa respectively, P < 0.05) and NAG (45.2 ± 6.6 and 60.1 ± 7.9 vs 71.5 ± 1.9, 64.7 ± 1.3 or 63.1 ± 2.1 mU ejaculate-1 respectively, P < 0.05). Moreover, the percentage of morphologically normal spermatozoa was decreased in the MOB group compared with the UW, NW, OW and OB groups (4.8 ± 0.6% vs 6.0 ± 0.8%, 6.9 ± 0.1%, 6.8 ± 0.1 and 6.4 ± 0.2%, respectively; P < 0.05). In addition, men in the MOB group had an increased risk (2.3- to 4.9-fold greater) of suffering oligospermia and teratospermia (P < 0.05). Both morbid obesity and being underweight have a negative effect on sperm quality, particularly epididymal maturation. These results show the importance of an adequate or normal bodyweight as the natural best option for fertility, with both extremes of the BMI scale as negative prognostic factors.
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Li X, Lü ZR, Wang W, Han XP, Yang JM, Park YD, Zhou HM, Sheng Q, Lee J. Effect of Ba2+ on the activity and structure of α-glucosidase: Inhibition kinetics and molecular dynamics simulation. Process Biochem 2015. [DOI: 10.1016/j.procbio.2015.01.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Martini AC, Molina RI, Tissera A, Ruiz RD, Cuneo MFD. The impact of obesity on male reproduction: its biological significance. Expert Rev Endocrinol Metab 2013; 8:139-148. [PMID: 30736174 DOI: 10.1586/eem.13.8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Since obesity and male subfertility have increased in parallel during the last decades, the hypothesis of an association between these two phenomena has been explored by several researchers. Although there is no consensus apparently obesity impacts men's reproductive potential by several mechanisms, like alterations on the hypothalamus-pituitary-testicular axis, modifications of spermatogenesis and semen quality and/or impairment of men's sexual health. This review intends to summarize the underlying bases of such alterations and propose new ones, without miscalculating their biological significance. Obesity is not rigorously related to subfertility; in addition, the existence of a genetic predisposition to obesity-linked sterility is currently under investigation. Nonetheless, the impact of obesity on male reproductive potential must be fully elucidated since the prevalence of obesity is increasing and consequently, the number of obese men with reduced fertility will also rise.
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Affiliation(s)
- Ana Carolina Martini
- a Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Cátedra de Fisiología Humana, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU, Córdoba, Argentina
- c Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Cátedra de Fisiología Humana, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU, Córdoba, Argentina.
| | - Rosa Isabel Molina
- b Laboratorio de Andrología y Reproducción (LAR), Chacabuco 1123 PB, 5000, Córdoba, Argentina
| | - Andrea Tissera
- b Laboratorio de Andrología y Reproducción (LAR), Chacabuco 1123 PB, 5000, Córdoba, Argentina
| | - Rubén Daniel Ruiz
- a Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Cátedra de Fisiología Humana, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU, Córdoba, Argentina
| | - Marta Fiol de Cuneo
- a Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Cátedra de Fisiología Humana, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Santa Rosa 1085, X5000ESU, Córdoba, Argentina
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12
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Martini AC, Tissera A, Estofán D, Molina RI, Mangeaud A, de Cuneo MF, Ruiz RD. Overweight and seminal quality: a study of 794 patients. Fertil Steril 2010; 94:1739-43. [PMID: 20056217 DOI: 10.1016/j.fertnstert.2009.11.017] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2009] [Revised: 11/05/2009] [Accepted: 11/09/2009] [Indexed: 11/19/2022]
Abstract
OBJECTIVES To evaluate sperm quality, levels of markers of epididymal and accessory gland function, and T in semen from men grouped according to their body mass index (BMI). DESIGN Blind prospective study. SETTING Andrology and reproduction laboratory in Cordoba, Argentina (2006-2007). PATIENT(S) Seven hundred ninety-four men. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) In semen samples, sperm quality (volume, density, motility, morphology, viability, hypoosmotic swell test, and nuclear maturity) and levels of neutral alpha-glucosidase, fructose, citric acid and T. RESULT(S) Multivariate analysis showed a negative association between BMI and motility, rapid motility and neutral alpha-glucosidase levels, and a positive association between BMI and seminal fructose levels. No associations were found among BMI and sperm concentration, the other parameters evaluated, or seminal T levels. CONCLUSION(S) Results found in our study support a deleterious effect of obesity on seminal quality, probably by alterations in the function of the epididymis (i.e., in epididymal maturation).
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Affiliation(s)
- Ana C Martini
- Established investigator from the Consejo Nacional de Investigaciones Científicas y Tecnológicas, Instituto de Fisiología, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina.
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Anguiano B, Aranda N, Delgado G, Aceves C. Epididymis expresses the highest 5'-deiodinase activity in the male reproductive system: kinetic characterization, distribution, and hormonal regulation. Endocrinology 2008; 149:4209-17. [PMID: 18467445 PMCID: PMC2488221 DOI: 10.1210/en.2007-1679] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We characterized the enzymes that catalyze the deiodination of T(4) to T(3) in the male reproductive tract. Testis, epididymis (EPI), seminal vesicles, prostate, bulbourethral glands, spermatozoa, and semen were taken from sexually mature rats (300 g). Iodothyronine 5'-deiodinase (5'-D) activity was quantified by the radiolabeled-iodide-release method. 5'-D activity was 10-fold higher in EPI and semen than in the rest of the tissues. In EPI, semen, and prostate, the enzymatic activity was completely inhibited by 1 mm 6-n-propyl-2-thiouracil, whereas in the other tissues the inhibition was partial (50%). The high susceptibility to 6-n-propyl-2-thiouracil inhibition, a ping-pong kinetic pattern, and low cofactor (Michaelis Menten constant for dithiothreitol=0.7 mm) and high substrate (Michaelis Menten constant for reverse T(3)=0.4 microm) requirements indicate that EPI 5'-D corresponds to type 1 deiodinase (D1). Real-time RT-PCR amplification of D1 mRNA in this tissue confirms this conclusion. The highest EPI D1 expression occurred at the onset of puberty and sexual maturity, and in the adult, this activity was more abundant in corpus and caput than in the caudal region. EPI D1 expression was elevated under conditions of hyperthyroidism and with addition of 17beta-estradiol. Our data also showed a direct association between D1 and a functional epididymis marker, the neutral alpha-glucosidase enzyme, suggesting that local generation of T(3) could be associated with the development and function of EPI and/or spermatozoa maturation. Further studies are necessary to analyze the possible physiological relevance of 5'-D in the male reproductive system.
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Affiliation(s)
- Brenda Anguiano
- Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro 76230, México
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