keyword
MENU ▼
Read by QxMD icon Read
search

Male reproductive system

keyword
https://www.readbyqxmd.com/read/28641119/maternal-progesterone-levels-are-modulated-by-maternal-bmi-and-predict-birth-weight-sex-specifically-in-human-pregnancies
#1
Anke Diemert, Janina Goletzke, Claus Barkmann, Robert Jung, Kurt Hecher, Petra Arck
OBJECTIVE: Successful pregnancy outcome is the result of a tailored adaptation of the maternal endocrine and immune system throughout gestation. We aimed to investigate if maternal endocrine, anthropometric and life style factors assessed longitudinally throughout pregnancy allow prediction of birth weight. STUDY DESIGN: Data on maternal factors and obstetrical characteristics from 220 pregnancies from a German prospective pregnancy cohort were analyzed using univariate and multivariate regression models...
June 3, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28637085/successful-delivery-derived-from-cryopreserved-rare-human-spermatozoa-with-novel-cryopiece
#2
J Sun, W Chen, L Zhou, J Hu, Z Li, Z Zhang, Y Wu
Herein, we report the clinical outcomes following intracytoplasmic sperm injection (ICSI) with cryopiece cryopreserved rare human spermatozoa from severe male factor infertility patients. We established a novel cryopiece system on the basis of previous studies. In this study, 126 spermatozoa from four patients with non-obstructiveazoospermia (NOA) or severe oligozoospermia were stored in cryopiece and then thawed on the day of the oocyte retrieval, 88 (83%) spermatozoa were recovered with a 47.5% (38 of 80) motile rate...
June 21, 2017: Andrology
https://www.readbyqxmd.com/read/28636888/responsiveness-of-pituitary-to-galanin-throughout-the-reproductive-cycle-of-male-european-sea-bass-dicentrarchus-labrax
#3
P Pinto, Z Velez, C Sousa, S Santos, A Andrade, M V Alvarado, A Felip, S Zanuy, A V M Canário
The neuropeptide galanin (Gal) is a putative factor regulating puberty onset and reproduction through its actions on the pituitary. The present study investigated the pituitary responsiveness to galanin and the patterns of galanin receptors (Galrs) expression throughout the reproductive cycle of two years old male European sea bass (Dicentrarchus labrax), an important aquaculture species. Quantitative analysis of pituitary and hypothalamus transcript expression of four galr subtypes revealed differential regulation according to the testicular developmental stage, with an overall decrease in expression from the immature stage to the mid-recrudescence stage...
June 18, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28636785/sperm-competition-suppresses-gene-drive-among-experimentally-evolving-populations-of-house-mice
#4
Andri Manser, Anna K Lindholm, Leigh W Simmons, Renée C Firman
Drive genes are genetic elements that manipulate the 50% ratio of Mendelian inheritance in their own favour, allowing them to rapidly propagate through populations. The action of drive genes is often hidden, making detection and identification inherently difficult. Yet drive genes can have profound evolutionary consequences for the populations that harbour them: most known drivers are detrimental to organismal gamete development, reproduction and survival. In this study, we identified the presence of a well-known drive gene called t haplotype post-hoc in eight replicate selection lines of house mice that had been evolving under enforced monandry or polyandry for 20 generations...
June 21, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28635968/sex-biased-dispersal-creates-spatial-genetic-structure-in-a-parthenogenetic-ant-with-a-dependent-lineage-reproductive-system
#5
A Kuhn, D Bauman, H Darras, S Aron
Reproduction and dispersal are key aspects of species life history that influence spatial genetic structure in populations. Several ant species in the genus Cataglyphis have evolved a unique breeding system in which new reproductives (that is, queens and males) are produced asexually by parthenogenesis; in contrast, non-reproductives (that is, workers) are produced via sexual reproduction by mates from distinct genetic lineages. We investigated how these two coexisting reproductive methods affect population-level spatial genetic structure using the ant Cataglyphis mauritanica as a model...
June 21, 2017: Heredity
https://www.readbyqxmd.com/read/28634289/sex-specific-early-survival-drives-adult-sex-ratio-bias-in-snowy-plovers-and-impacts-mating-system-and-population-growth
#6
Luke J Eberhart-Phillips, Clemens Küpper, Tom E X Miller, Medardo Cruz-López, Kathryn H Maher, Natalie Dos Remedios, Martin A Stoffel, Joseph I Hoffman, Oliver Krüger, Tamás Székely
Adult sex ratio (ASR) is a central concept in population biology and a key factor in sexual selection, but why do most demographic models ignore sex biases? Vital rates often vary between the sexes and across life history, but their relative contributions to ASR variation remain poorly understood-an essential step to evaluate sex ratio theories in the wild and inform conservation. Here, we combine structured two-sex population models with individual-based mark-recapture data from an intensively monitored polygamous population of snowy plovers...
June 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28630322/tcte1-is-a-conserved-component-of-the-dynein-regulatory-complex-and-is-required-for-motility-and-metabolism-in-mouse-spermatozoa
#7
Julio M Castaneda, Rong Hua, Haruhiko Miyata, Asami Oji, Yueshuai Guo, Yiwei Cheng, Tao Zhou, Xuejiang Guo, Yiqiang Cui, Bin Shen, Zibin Wang, Zhibin Hu, Zuomin Zhou, Jiahao Sha, Renata Prunskaite-Hyyrylainen, Zhifeng Yu, Ramiro Ramirez-Solis, Masahito Ikawa, Martin M Matzuk, Mingxi Liu
Flagella and cilia are critical cellular organelles that provide a means for cells to sense and progress through their environment. The central component of flagella and cilia is the axoneme, which comprises the "9+2" microtubule arrangement, dynein arms, radial spokes, and the nexin-dynein regulatory complex (N-DRC). Failure to properly assemble components of the axoneme leads to defective flagella and in humans leads to a collection of diseases referred to as ciliopathies. Ciliopathies can manifest as severe syndromic diseases that affect lung and kidney function, central nervous system development, bone formation, visceral organ organization, and reproduction...
June 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28630112/rapid-evolution-of-ovarian-biased-genes-in-the-yellow-fever-mosquito-aedes-aegypti
#8
Carrie A Whittle, Cassandra G Extavour
Males and females exhibit highly dimorphic phenotypes, particularly in their gonads, which is believed to be driven largely by differential gene expression. Typically, the protein sequences of genes upregulated in males, or male-biased genes, evolve rapidly as compared to female-biased and unbiased genes. To date, the specific study of gonad-biased genes remains uncommon in metazoans. Here, we identified and studied a total of 2,927, 2,013 and 4,449 coding-sequences (CDS) with ovary-biased, testis-biased and unbiased expression respectively in the yellow-fever mosquito Aedes aegypti The results showed that ovary-biased and unbiased CDS had higher nonsynonymous to synonymous substitution rates (dN/dS) and lower optimal codon usage (those codons that promote efficient translation) than testis-biased genes...
June 19, 2017: Genetics
https://www.readbyqxmd.com/read/28626004/sex-chromosome-evolution-heterochiasmy-and-physiological-qtl-in-the-salmonid-brook-charr-salvelinus-fontinalis
#9
Ben J G Sutherland, Ciro Rico, Céline Audet, Louis Bernatchez
Whole genome duplication can have large impacts on genome evolution, and much remains unknown about these impacts. This includes the mechanisms of coping with a duplicated sex determination system and whether this has an impact on increasing the diversity of sex determination mechanisms. Other impacts include sexual conflict, where alleles having different optimums in each sex can result in sequestration of genes into non-recombining sex chromosomes. Sex chromosome development itself may involve sex-specific recombination rate (i...
June 16, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/28625925/vanadium-exposure-induced-striatal-learning-and-memory-alterations-in-rats
#10
Liping Sun, Keyue Wang, Yan Li, Qiyuan Fan, Wei Zheng, Hong Li
Occupational and environmental exposure to vanadium has been associated with toxicities in reproductive, respiratory, and cardiovascular systems. The knowledge on whether and how vanadium exposure caused neurobehavioral changes remains incomplete. This study was designed to investigate the changes in learning and memory following drinking water exposure to vanadium, and to conduct the preliminary study on underlying mechanisms. Male Sprague-Dawley rats were exposed to vanadium dissolved in drinking water at the concentration of 0...
June 15, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28624121/leptin-like-immunoreactivity-in-the-central-nervous-system-digestive-organs-and-gonads-of-the-giant-freshwater-prawn-macrobrachium-rosenbergii
#11
Jaruwan Poljaroen, Yotsawan Tinikul, Ruchanok Tinikul, Panat Anurucpreeda, Prasert Sobhon
Leptin, a highly conserved adipocyte-derived hormone, plays important roles in a variety of physiological processes, including the control of fat storage and metabolic status which are linked to food intake, energy homeostasis, and reproduction in all vertebrates. In the present study, we hypothesize that leptin is also present in various organs of the fresh water prawns, Macrobrachium rosenbergii. The existence and distribution of a leptin-like peptide in prawn tissues were verified by using Western blotting (WB) and immunohistochemical detection (ID) using primary antibody against human leptin...
June 14, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/28622660/assessing-the-effects-of-the-antidepressant-venlafaxine-to-fathead-minnows-exposed-to-environmentally-relevant-concentrations-over-a-full-life-cycle
#12
Joanne L Parrott, Chris D Metcalfe
Venlafaxine is an antidepressant drug that has been detected in municipal wastewater effluents at low μg/L concentrations. To assess the potential of this compound to affect the survival, development and reproductive capacity of fish, we exposed fathead minnow (Pimephales promelas) over a full lifecycle in a flow-through system to nominal venlafaxine concentrations of 0.88, 8.8, and 88 μg/L. Mean measured venlafaxine concentrations in these treatments were 1.0, 9.3 and 75 μg/L. During the 167-168 d exposure, no significant changes were observed in survival, or the weights and lengths of fathead minnows...
June 13, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28616754/sexually-dimorphic-distribution-of-prokr2-neurons-revealed-by-the-prokr2-cre-mouse-model
#13
Zaid Mohsen, Hosung Sim, David Garcia-Galiano, Xingfa Han, Nicole Bellefontaine, Thomas L Saunders, Carol F Elias
Prokineticin receptor 2 (PROKR2) is predominantly expressed in the mammalian central nervous system. Loss-of-function mutations of PROKR2 in humans are associated with Kallmann syndrome due to the disruption of gonadotropin releasing hormone neuronal migration and deficient olfactory bulb morphogenesis. PROKR2 has been also implicated in the neuroendocrine control of GnRH neurons post-migration and other physiological systems. However, the brain circuitry and mechanisms associated with these actions have been difficult to investigate mainly due to the widespread distribution of Prokr2-expressing cells, and the lack of animal models and molecular tools...
June 14, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28613158/sexual-selection-gradients-change-over-time-in-a-simultaneous-hermaphrodite
#14
Jeroen Na Hoffer, Janine Mariën, Jacintha Ellers, Joris M Koene
Sexual selection is generally predicted to act more strongly on males than on females. The Darwin-Bateman paradigm predicts that this should also hold for hermaphrodites. However, measuring this strength of selection is less straightforward when both sexual functions are performed throughout the organism's lifetime. Besides, quantifications of sexual selection are usually done during a short time window, while many animals store sperm and are long-lived. To explore whether the chosen timeframe affects estimated measures of sexual selection, we recorded mating success and reproductive success over time, using a simultaneous hermaphrodite...
June 14, 2017: ELife
https://www.readbyqxmd.com/read/28613007/transcriptional-coactivator-with-pdz-binding-motif-is-required-to-sustain-testicular-function-on-aging
#15
Mi Gyeong Jeong, Hyuna Song, Ji Hyun Shin, Hana Jeong, Hyo Kyeong Kim, Eun Sook Hwang
Transcriptional coactivator with PDZ-binding motif (TAZ) directly interacts with transcription factors and regulates their transcriptional activity. Extensive functional studies have shown that TAZ plays critical regulatory roles in stem cell proliferation, differentiation, and survival and also modulates the development of organs such as the lung, kidney, heart, and bone. Despite the importance of TAZ in stem cell maintenance, TAZ function has not yet been evaluated in spermatogenic stem cells of the male reproductive system...
June 14, 2017: Aging Cell
https://www.readbyqxmd.com/read/28611209/the-highly-overlapping-actions-of-lh-signaling-and-fsh-signaling-on-zebrafish-spermatogenesis
#16
Yuxin Xie, Lianhe Chu, Yun Liu, Kathy W Y Sham, Jianzhen Li, Christopher H K Cheng
Gonadotropin signaling plays a pivotal role in the spermatogenesis of vertebrates, but how gonadotropins regulate the process in non-mammalian species remains elusive. Using a gene knockout approach in zebrafish, we have previously demonstrated the non-canonical action of gonadotropin signaling on spermatogenesis by analyzing four single mutant lines (lhb, lhr, fshb and fshr) and three double mutant lines (lhb;fshb, lhr;fshr and fshb;lhr). In this study, we further investigated the actions of gonadotropins on the testis by establishing three other double mutant zebrafish lines (lhb;lhr, fshb;fshr and lhb;fshr)...
June 13, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28610126/taxonomic-description-and-3d-modelling-of-a-new-species-of-myzostomid-annelida-myzostomida-associated-with-black-corals-from-madagascar
#17
Lucas Terrana, Igor Eeckhaut
Eenymeenymyzostoma nigrocorallium n. sp. is the first species of myzostomid worm associated with black corals to be described. Endoparasitic specimens of E. nigrocorallium were found associated with three species of antipatharians on the Great Reef of Toliara. Individuals inhabit the gastrovascular ducts of their hosts and evidence of infestation is, most of the time, not visible externally. Phylogenetic analyses based on 18S rDNA, 16S rDNA and COI data indicate a close relation to Eenymeenymyzostoma cirripedium, the only other species of the genus...
March 19, 2017: Zootaxa
https://www.readbyqxmd.com/read/28606898/carotenoids-buffer-the-acute-phase-response-on-fever-sickness-behavior-and-rapid-bill-color-change-in-zebra-finches
#18
Deanna R Broughton, Brent C Schneider, Kevin J McGraw, Daniel R Ardia
Carotenoids are finite resources that animals can allocate to self-maintenance, attractiveness, or reproduction. Here we test how carotenoids affect the acute phase response (APR), an intense rapid systemic response characterized by fever, sickness behavior, and production of acute phase proteins, which serves to reduce pathogen persistence. We conducted a 2x2 factorial design experiment in captive adult male and female zebra finches (Taeniopygia guttata) to determine the effects of carotenoid supplementation on the intensity of the APR...
June 12, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28606853/proteomic-analysis-of-the-kissing-bug-rhodnius-prolixus-antenna
#19
Daniele S Oliveira, Nathalia F Brito, Fabio C S Nogueira, Monica F Moreira, Walter S Leal, Marcia R Soares, Ana C A Melo
Reception of odorants is essential in insects' life since the chemical signals in the environment (=semiochemicals) convey information about availability of hosts for a blood meal, mates for reproduction, sites for oviposition and other relevant information for fitness in the environment. Once they reach the antennae, these semiochemicals bind to odorant-binding proteins and are transported through the sensillar lymph until reach the odorant receptors. Such perireceptor events, particularly the interactions with transport proteins, are the liaison between the external environment and the entire neuroethological system and, therefore, a potential target to disrupt insect chemical communication...
June 9, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28602421/endocrine-disruption-effects-in-male-and-intersex-roach-rutilus-rutilus-l-from-french-rivers-an-integrative-approach-based-on-subcellular-to-individual-responses
#20
Perrine Geraudie, Marie Gerbron, Christophe Minier
Among the chemicals found in the aquatic environment, some have been reported to interact with the endocrine system of organisms and have been identified as endocrine disrupting compounds. In this study, we have assessed the biological effects due to environmental estrogenic compounds in adult male roach (Rutilus rutilus). Wild fish were collected in the Seine river, and one of its affluent, the Epte river in Normandy, France and impacts on endocrine and reproductive functions have been assessed. This study provides innovative data on the intersex condition in wild fish that are crucial to understand estrogenic contamination impacts and maintenance of sustainable fish population...
June 5, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
keyword
keyword
94068
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"