keyword
MENU ▼
Read by QxMD icon Read
search

male reproduction

keyword
https://www.readbyqxmd.com/read/28636229/recovery-from-reproductive-and-morphological-abnormalities-in-medaka-oryzias-latipes-following-a-14-day-exposure-to-diclofenac
#1
Hirofumi Yokota, Kaho Higashi, Erina Hanada, Ei Matsuzaki, Yukinari Tsuruda, Tomoko Suzuki, Eiko Nakano, Sayaka Eguchi
Mating pairs of medaka (Oryzias latipes) were exposed to diclofenac (DCF) at measured concentrations of 0 (control), 7.1, 37, and 78 µg/L for 14 d under static-renewal conditions. Effects on reproductive success, as well as morphological abnormalities, of the fish were assessed. During the exposure period, both fecundity and fertility were significantly decreased in the 37 and 78 µg/L treatments groups, and swollen abdomens in females were observed in all exposure groups. Notably, a defect of the lower jaw also was observed in four male fish: two at 37 µg/L, and the others at 78 µg/L of DCF...
June 21, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28636161/infinity-sperm-storage-the-gift-that-keeps-on-giving
#2
Gauthier Schang, Beatriz Fernandez-Fuertes, Samantha C Lean, Alexandra L Nguyen, Osvaldo Bogado Pascottini
Female Drosophila retain sperm for up to two weeks post-copulation in a network of storage organs includng the bursa, the seminal receptacle, and the spermathecae. This image shows the seminal receptacle of a Drosophila melanogaster female, 2-hrs post-copulation between a LHM (wild-type) female with a Protamine B (green), β-Tubulin (blue) fluorescently tagged male, whose sperm can be visualized within the female. This 'infinity' structure of the seminal receptacle resembles the tubular coil that allows for the storage of very long sperm relative to female body size -up to 20 times the length of the female in some Drosophila species...
June 21, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28636095/suppression-or-knockout-of-saf-sam-overcomes-the-sa-mediated-hybrid-male-sterility-in-rice
#3
Yongyao Xie, Baixiao Niu, Yunming Long, Gousi Li, Jintao Tang, Yaling Zhang, Ding Ren, Yao-Guang Liu, Letian Chen
Hybrids between the indica and japonica subspecies of rice (Oryza sativa) are usually sterile, which hinders utilization of heterosis in the inter-subspecific hybrid breeding. The complex locus Sa comprises two adjacently located genes, SaF and SaM, which interact to cause abortion of pollen grains carrying the japonica allele in japonica-indica hybrids. Here we showed that silencing of SaF or SaM by RNA interference restored male fertility in indica-japonica hybrids with heterozygous Sa. We further used CRISPR/Cas9-based genome editing to knockout the SaF and SaM alleles respectively of an indica rice line to create hybrid-compatible lines...
June 21, 2017: Journal of Integrative Plant Biology
https://www.readbyqxmd.com/read/28635968/sex-biased-dispersal-creates-spatial-genetic-structure-in-a-parthenogenetic-ant-with-a-dependent-lineage-reproductive-system
#4
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/28635608/the-protective-role-of-folic-acid-against-testicular-dysfunction-in-lead-intoxicated-rat-model
#5
Asmaa Ms Gomaa, Nasser S Abou Khalil, Mohammed A Abdel-Ghani
There is an increasing concern over male reproductive toxicity caused by lead exposure. Folic acid (FA) is supposed to be a promising therapeutic strategy against lead toxicity. Therefore, the aim of this experimental study was to shed light on the potential protective role of FA on lead-induced testicular dysfunction in rats and its possible underlying mechanistic pathways. Rats (n = 24) were divided into four groups: Control, FA, Lead, and FA+Lead group. After 4 weeks, lead intoxication resulted in a marked reduction in the relative testicular weight and the serum level of testosterone, an impairment in the characters of semen analysis, and an increased content of lead, malondialdehyde and both interleukin-6 and -10 and a decreased antioxidant enzyme levels in the testicular tissue homogenate...
July 2017: General Physiology and Biophysics
https://www.readbyqxmd.com/read/28634722/three-novel-bile-alcohols-of-mature-male-sea-lamprey-petromyzon-marinus-act-as-chemical-cues-for-conspecifics
#6
Ke Li, Anne M Scott, Joseph J Riedy, Skye Fissette, Zoe E Middleton, Weiming Li
Sea lamprey, Petromyzon marinus, rely heavily on chemical cues that mediate their life history events, such as migration and reproduction. Here, we describe petromyzone A-C (1-3), three novel bile alcohols that are highly oxidized and sulfated, isolated from water conditioned with spermiated male sea lamprey. Structures of these compounds were unequivocally established by spectroscopic analyses and by comparison with spectra of known compounds. Electro-olfactogram recordings showed that 1 at 10(-11) M was stimulatory to the adult sea lamprey olfactory epithelium, while 2 and 3 were stimulatory at 10(-13) M...
June 20, 2017: Journal of Chemical Ecology
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
#7
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/28633351/data-compression-can-discriminate-broilers-by-selection-line-detect-haplotypes-and-estimate-genetic-potential-for-complex-phenotypes
#8
N J Hudson, R J Hawken, R Okimoto, R L Sapp, A Reverter
Accurately establishing the relationships among individuals lays the foundation for genetic analyses such as genome-wide association studies and identification of selection signatures. Of particular interest to the poultry industry are estimates of genetic merit based on molecular data. These estimates can be commercially exploited in marker-assisted breeding programs to accelerate genetic improvement. Here, we test the utility of a new method we have recently developed to estimate animal relatedness and applied it to genetic parameter estimation in commercial broilers...
June 15, 2017: Poultry Science
https://www.readbyqxmd.com/read/28631836/medaka-extended-one-generation-reproduction-test-meogrt-evaluating-4-nonylphenol
#9
Haruna Watanabe, Yoshifumi Horie, Hitomi Takanobu, Masaaki Koshio, Taisen Iguchi, Norihisa Tatarazako
The Medaka Extended One-Generation Test (MEOGRT) was developed as a multi-generational toxicity test for chemicals, particularly endocrine disrupting chemicals. Briefly, 3 generations of Japanese medaka (Oryzias latipes) are exposed to a chemical over a 20-week period: 3-week in the parental generation (F0), 15-week in the first generation (F1), and 2-week in the second generation (F2). The present study reports the first MEOGRT results concerning branched isomer mixtures of 4-nonylphenol (NP). Adult F0 medaka exposed to NP at 5 actual concentrations (1...
June 20, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28631552/effect-of-2-3-4-4-5-pentachlorobiphenyl-exposure-on-endometrial-receptivity-and-the-methylation-of-hoxa10
#10
Xin-Lan Qu, Ming-Zhang, Yuan-Fang, Hui Wang, Yuan-Zhen Zhang
Polychlorinated biphenyls (PCBs) are one of the most common endocrine-disrupting chemicals and have obvious toxicity on human reproductive development. The aim of our study was to investigate the toxicity of chronic 2,3',4,4',5-pentachlorobiphenyl (PCB 118) exposure on embryo implantation and endometrial receptivity, with the possible mechanism of DNA methylation involved. Virgin CD-1 female mice (3 weeks old) were housed and orally treated with PCB 118 (0, 1, 10, 100 μg/kg) for a month. After mating with fertile males, the pregnant mice were killed on gestation day 4...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28631185/the-increased-expression-of-follicle-stimulating-hormone-leads-to-a-decrease-of-fecundity-in-transgenic-large-white-female-pigs
#11
Kai Jiang, Pan Xu, Wanbo Li, Qiang Yang, Longyun Li, Chuanmin Qiao, Huanfa Gong, Hao Zheng, Zhimin Zhou, Hao Fu, Qiuyan Li, Yuyun Xing, Jun Ren
Follicle-stimulating hormone (FSH) is a pituitary gonadotropin regulating reproduction in mammals. Overexpression of the exogenous FSHα/β genes from Chinese Erhualian pigs improved female fecundity of transgenic (TG) mice and male spermatogenesis ability of Large White TG boars. Here, we investigated the impact of the exogenous FSHα/β genes on female reproductive performance of Large White TG pigs. First, we identified the integration site of the exogenous FSHα/β genes at 140,646,456 bp on chromosome 9 in these TG pigs using whole-genome sequencing...
June 19, 2017: Transgenic Research
https://www.readbyqxmd.com/read/28630877/male-partnered-sexual-minority-women-sexual-identity-disclosure-to-health-care-providers-during-the-perinatal-period
#12
Abbie E Goldberg, Lori E Ross, Melissa H Manley, Jonathan J Mohr
Male-partnered sexual minority women (SMW) have received little research attention, despite the fact that they represent a large proportion of SMW - particularly child-bearing SMW. Male-partnered SMW are less "out" than female-partnered SMW and will likely be "read" as heterosexual by perinatal providers. Given this, and evidence that pregnant women have unique mental health care needs, the current study focuses on male-partnered SMW (n = 28) during the perinatal period, recruited from Toronto, Canada and Massachusetts, USA, in an effort to understand disclosure and concealment processes in general and to perinatal heath care providers specifically...
March 2017: Psychology of Sexual Orientation and Gender Diversity
https://www.readbyqxmd.com/read/28630618/perinatal-effects-of-scorpion-venoms-maternal-and-offspring-development
#13
REVIEW
Ana Leticia Coronado Dorce, Adriana do Nascimento Martins, Valquiria Abrão Coronado Dorce, Ana Leonor Abrahão Nencioni
Scorpion envenomation is a public health problem, especially in tropical and subtropical countries. Considering the high incidence of scorpionism in some areas, pregnant women and nursing mothers may be possible victims. Scorpion stings alter the release of neurotransmitters and some cytokines. These mediators act as organizers and programmers in the adequate formation of the nerves, and non-physiological concentrations of them during the brain organization originate disorders and diseases that can appear later in the life of the individual...
2017: Journal of Venomous Animals and Toxins Including Tropical Diseases
https://www.readbyqxmd.com/read/28630352/structural-complexity-and-molecular-heterogeneity-of-a-butterfly-ejaculate-reflect-a-complex-history-of-selection
#14
Camille Meslin, Tamara S Cherwin, Melissa S Plakke, Brandon S Small, Breanna J Goetz, Nathan I Morehouse, Nathan L Clark
Male ejaculates are often structurally complex, and this complexity is likely to influence key reproductive interactions between males and females. However, despite its potential evolutionary significance, the molecular underpinnings of ejaculate structural complexity have received little empirical attention. To address this knowledge gap, we sought to understand the biochemical and functional properties of the structurally complex ejaculates of Pieris rapae butterflies. Males in this species produce large ejaculates called spermatophores composed of an outer envelope, an inner matrix, and a bolus of sperm...
June 19, 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
#15
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/28630310/group-augmentation-collective-action-and-territorial-boundary-patrols-by-male-chimpanzees
#16
Kevin E Langergraber, David P Watts, Linda Vigilant, John C Mitani
How can collective action evolve when individuals benefit from cooperation regardless of whether they pay its participation costs? According to one influential perspective, collective action problems are common, especially when groups are large, but may be solved when individuals who have more to gain from the collective good or can produce it at low costs provide it to others as a byproduct. Several results from a 20-y study of one of the most striking examples of collective action in nonhuman animals, territorial boundary patrolling by male chimpanzees, are consistent with these ideas...
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
#17
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/28629181/knockout-of-murine-mamld1-impairs-testicular-growth-and-daily-sperm-production-but-permits-normal-postnatal-androgen-production-and-fertility
#18
Mami Miyado, Kaoru Yoshida, Kenji Miyado, Momori Katsumi, Kazuki Saito, Shigeru Nakamura, Tsutomu Ogata, Maki Fukami
MAMLD1 has been implicated in testicular function in both human and mouse fetuses. Although three patients with MAMLD1 mutations were reported to have hypergonadotropic hypogonadism in their teens, the functional significance of MAMLD1 in the postnatal testis remains unclear. Here, we analyzed the phenotype of Mamld1 knockout (KO) male mice at reproductive ages. The reproductive organs of KO male mice were morphologically unremarkable, except for relatively small testes. Seminiferous tubule size and number of proliferating spermatogonia/spermatocytes were reduced in the KO testis...
June 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28628611/effects-of-salinity-on-gonadal-development-osmoregulation-and-metabolism-of-adult-male-chinese-mitten-crab-eriocheir-sinensis
#19
Xiaowen Long, Xugan Wu, Lei Zhao, Haihui Ye, Yongxu Cheng, Chaoshu Zeng
As a catadromous species, salinity is a key parameter that affects gonadal development of Chinese mitten crab Eriocheir sinensis during reproductive migration. It is however unclear the effects of salinity on the gonadal development of male E. sinensis as well as their physiological responses to salinity during reproductive migration. This study investigated the effects of four salinities (0 ‰, 6 ‰, 12 ‰ and 18 ‰) on gonadal development, osmoregulation and metabolism of adult male E. sinensis over a 40-day period...
2017: PloS One
https://www.readbyqxmd.com/read/28627828/the-relationship-between-the-mthfr-c677t-genotypes-to-serum-anti-m%C3%A3-llerian-hormone-concentrations-and-in-vitro-fertilization-intracytoplasmic-sperm-injection-outcome
#20
Seyedeh Z Shahrokhi, Faranak Kazerouni, Firouzeh Ghaffari, Ali Rahimipour, Mir D Omrani, Arezoo Arabipoor, Ramin Lak, Elaheh T Ghane
BACKGROUND: The expression of the 5,10-methylentetrahydrofolate reductase (MTHFR) gene in human oocytes and preimplantation embryos suggests that the MTHFR gene is involved in folliculogenesis and female reproduction. Considering the importance of the MTHFR gene on female reproduction, the aim of this study was to evalu- ate the influence of MTHFR C677T polymorphism on ovarian marker reserve, particularly serum anti-Müllerian hormone (AMH) levels, and ovarian response as well as clinical pregnancy rates after in vitro fertilization (IVF)/ intracytoplasmic sperm injection (ICSI)...
May 1, 2017: Clinical Laboratory
keyword
keyword
57489
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"