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Increased serotonin concentration and tryptophan hydroxylase activity in reproductive organs of copulator males:a case of adaptive plasticity

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Advances in Bioscience and Biotechnology 2011年第2期2卷 75-84页

作者： Ana Ingrid Pichardo Jose L.Tlachi-Lopez Francisco Jimenez-Trejo Alma L.Fuentes-Farias Armida Baez-Saldana Maria L.Molina-Ceron Gabriel Manjarrez-Gutierrez Gabriel Gutierrez-Ospina rosa angelica lucio Departamento de Biologia Celular y Fisiologia Instituto de Investigaciones BiomedicasUniversidad Nacional Autonoma de MexicoCiudad Universitaria 04510MexicoD.F.Mexico Centro Tlaxcala de Biologia de la Conducta Universidad Autonoma de TlaxcalaCarretera Tlaxcala-Puebla km 1.5 s/nLoma Xicotencatl90062TlaxcalaMexico Departamento de Farmacologia Facultad de MedicinaUniversidad Nacional Autonoma de MexicoCiudad Universitaria 04510MexicoD.F.Mexico Laboratorio de Invertebrados y Ecofisiologia Facultad de BiologiaUniversidad Michoacana de San Nicolas de HidalgoCiudad Universitaria 58030MichoacanMexico Unidad de Investigacion Biomolecular Hospital de CardiologiaCentro Medico Nacional Siglo XXIInstituto Mexicano del Seguro Social 06720MexicoD.F.Mexico

Individual male rats may systematically display or not copulatory behavior when paired with receptive females. Although these phenotypes are associated with differences in brain organization and function, they might also do so at the level of the reproductive organs. We then used high performance liquid chromatography to quantify serotonin concentration and the activity of tryptophan hydroxylase in the reproductive organs of copulator and non-copulator males. Sexual behavior display was compared between groups and parameters of fertility and reproductive fitness were determined for copulator males. Copulator males had higher concentrations of serotonin in the epididymis, testicle and ventral prostate than their non-copulator counterparts, as it was found for epididymal and testicular tryptophan hydroxylase activity. However, preliminary data shows that serotonin elevation occurs in copulator males only until they have accumulated several sexual encounters, so it might be a response to genital gratification or sexual rewarding. Interestingly, only epididymal serotonin concentration correlated with reproductive fitness, offspring number, mating success and seminal plug volume in copulator males. Our results support that copulator and non-copulator male rats feature a phenotype-specific serotoninergic tone in the epididymis, testicle and ventral prostate gland. The observation documenting that epididymal serotonin concentration correlated with parameters that monitor male fertility and reproductive fitness in copulator males predicts that epididymal factors increase their chances of parenting offspring.

关键词： Sexual Accessory Glands Copulation Indolamines Seminal Fluid Seminal Plug Successful Mating Reproductive Fitness

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Combining genetic markers,on-farm information and infrared data for the in-line prediction of blood biomarkers of metabolic disorders in Holstein cattle

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Journal of Animal Science and Biotechnology 2024年第6期15卷 2229-2241页

作者： lucio F.M.Mota Diana Giannuzzi Sara Pegolo Hugo Toledo‑Alvarado Stefano Schiavon Luigi Gallo Erminio Trevisi Alon Arazi Gil Katz Guilherme J.M.rosa Alessio Cecchinato Department of Agronomy FoodNatural resourcesAnimals and Environment(DAFNAE)University of PadovaLegnaroPadova 35020Italy Department of Genetics and Biostatistics School of Veterinary Medicine and ZootechnicsNational Autonomous University of MexicoCiudad UniversitariaMexico City 04510Mexico Department of Animal Science Food and Nutrition(DIANA)and the Romeo and Enrica Invernizzi Research Center for Sustainable Dairy Production(CREI)Faculty of AgriculturalFoodand Environmental SciencesUniversita Cattolica del Sacro CuorePiacenza 29122Italy Afimilk LTD Afikim 15148Israel Department of Animal and Dairy Sciences University of WisconsinMadisonWI 53706USA

Background Various blood metabolites are known to be useful indicators of health status in dairy cattle,but their routine assessment is time-consuming,expensive,and stressful for the cows at the herd ***,we evaluated the effectiveness of combining in-line near infrared(NIR)milk spectra with on-farm(days in milk[DIM]and parity)and genetic markers for predicting blood metabolites in Holstein *** were obtained from 388 Holstein cows from a farm with an AfiLab *** spectra,on-farm information,and single nucleotide polymorphisms(SNP)markers were blended to develop calibration equations for blood metabolites using the elastic net(ENet)approach,considering 3 mod els:(1)Model 1(M1)including only NIR information,(2)Model 2(M2)with both NIR and on-farm information,and(3)Model 3(M3)combining NIR,on-farm and genomic *** reduction was considered for M3 by preselecting SNP markers from genome-wide association study(GWAS)*** Results indicate that M2 improved the predictive ability by an average of 19%for energy-related metabolites(glucose,cholesterol,NEFA,B H B,urea,and c reatinin e),20%for liver functio n/hepatic damage,7%for inflammation/innate immunity.24%for oxidative stress metabolites,and 23%for minerals compared to M1,Meanwhile,M3 further enhanced the predictive ability by 34%for energy-related metabolites,32%for liver function/hepatic damage,22%for inflammation/innate immunity,42.1%for oxidative stress metabolites,and 41%for mineralse compared to *** found improved predictive ability of M3 using selected SNP markers from GWAS results using a threshold of>2.0by 5%for energy-related metabolites,9%for liver function/hepatic damage,8%for inflammation/innate immunity,22%for oxidative stress metabolites,and 9%for *** redu ctions were observed fo r phosphorus(2%),ferricreducing antioxidant power(1%),and glucose(3%).Furthermore,it was found that prediction accuracies are influenced by using more restrictive threshold

关键词： Blood metabolites Dairy cattle Data integration Feature selection Metabolic disorders NIR Precision livestock farming

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