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https://www.readbyqxmd.com/read/28645781/immunomodulatory-mechanism-of-bushen-huoxue-recipe-alleviates-cyclophosphamide-induced-diminished-ovarian-reserve-in-mouse-model
#1
Cong Huang, Kunkun Song, Wenwen Ma, Jiahui Ding, Zhuo Chen, Mingmin Zhang
ETHNOPHARMACOLOGICAL RELEVANCE: Bushen Huoxue recipe (BHR) is a Chinese herbal prescription composed of ten herbs and it is widely used for the treatment of diminished ovarian reserve (DOR). This study investigates the potentially beneficial effects and underlying mechanism of BHR on a cyclophosphamide (CTX) induced model of DOR in mice. MATERIALS AND METHODS: Granules of BHR were first subjected to high performance liquid chromatography (HPLC) to determine the exact ingredients within the mixture...
June 20, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28638003/molecular-and-cellular-events-during-blastocyst-implantation-in-the-receptive-uterus-clues-from-mouse-models
#2
Hiromichi Matsumoto
The success of implantation is an interactive process between the blastocyst and the uterus. Synchronized development of embryos with uterine differentiation to a receptive state is necessary to complete pregnancy. The period of uterine receptivity for implantation is limited and referred to as the "implantation window", which is regulated by ovarian steroid hormones. Implantation process is complicated due to the many signaling molecules in the hierarchical mechanisms with the embryo-uterine dialogue. The mouse is widely used in animal research, and is uniquely suited for reproductive studies, i...
June 22, 2017: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/28633489/effects-of-early-pregnancy-on-uterine-lymphocytes-and-endometrial-expression-of-immune-regulatory-molecules-in-dairy-heifers1
#3
Sreelakshmi Vasudevan, Manasi M Kamat, Sadhat S Walusimbi, Joy L Pate, Troy L Ott
Natural killer (NK) cells are essential for establishment of human and rodent pregnancies. The function of these and other cytotoxic T cells (CTL) is controlled by stimulatory and inhibitory signaling. A role for cytotoxic cells during early pregnancy in cattle has not been described, but regulation of their function at the fetal-maternal interface is thought to be critical for conceptus survival. The hypothesis that the relative abundance of CTL and expression of inhibitory signaling molecules is increased by the conceptus during early pregnancy was tested...
June 19, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28632748/trimetazidine-therapy-for-diabetic-mouse-hearts-subjected-to-ex-vivo-acute-heart-failure
#4
Emilene Breedt, Lydia Lacerda, M Faadiel Essop
Acute heart failure (AHF) is the most common primary diagnosis for hospitalized heart diseases in Africa. As increased fatty acid β-oxidation (FAO) during heart failure triggers detrimental effects on the myocardium, we hypothesized that trimetazidine (TMZ) (partial FAO inhibitor) offers cardioprotection under normal and obese-related diabetic conditions. Hearts were isolated from 12-14-week-old obese male and female diabetic (db/db) mice versus lean non-diabetic littermates (db/+) controls. The Langendorff retrograde isolated heart perfusion system was employed to establish an ex vivo AHF model: a) Stabilization phase-Krebs Henseleit buffer (10 mM glucose) at 100 mmHg (25 min); b) Critical Acute Heart Failure (CAHF) phase-(1...
2017: PloS One
https://www.readbyqxmd.com/read/28628266/embryo-maternal-dialogue-during-pregnancy-establishment-and-implantation-in-the-pig
#5
REVIEW
Agnieszka Waclawik, Monika M Kaczmarek, Agnieszka Blitek, Piotr Kaczynski, Adam J Ziecik
Porcine conceptuses secrete pregnancy-recognition signals (estrogens, including estradiol-17β) that inhibit luteolysis, thereby prolonging progesterone production by corpora lutea. The supportive mechanism by which the conceptus also inhibits luteolysis is by shifting endometrial prostaglandin (PG) synthesis to luteoprotective PGE2. Progesterone stimulates endometrial production of factors that are essential for conceptus development. Priming the uterus by progesterone and loss of progesterone receptors from the uterine epithelium by D1ay 10-12 after estrus are key for achieving endometrial receptivity for implantation...
June 19, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28624479/food-restriction-induced-changes-in-motivation-differ-with-stages-of-the-estrous-cycle-and-are-closely-linked-to-rfamide-related-peptide-3-but-not-kisspeptin-in-syrian-hamsters
#6
REVIEW
Noah A Benton, Kim A Russo, Jeremy M Brozek, Ryan Andrews, Veronica Kim, Lance J Kriegsfeld, Jill E Schneider
We tested the hypothesis that the effects of food restriction on behavioral motivation are mediated by one or both of the RFamides, RFamide-related Peptide-3 (RFRP-3) and kisspeptin (Kp) in female Syrian hamsters (Mesocricetus auratus). Female hamsters fed ad libitum and given a choice between food and adult male hamsters are highly motivated to visit males instead of food on all four days of the estrous cycle, but after 8days of mild food restriction (75% of ad libitum intake) they shift their preference toward food every day of the estrous cycle until the day of estrus, when they shift their preference back toward the males...
June 14, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28621496/adrenomedullin-regulates-the-speed-of-oviductal-fluid-flow-in-cattle
#7
Yuka Yoshimoto, Takumi Nishie, Sayaka Ito, Yoshihiko Kobayashi, Yuki Yamamoto, Kiyoshi Okuda, Koji Kimura
Unidirectional flow of oviductal fluid from the ovarian to uterine side of the ampulla plays a significant role in successful pregnancy, and is produced by ciliary beating. Various systems regulate ciliary beating, such as paracrine, autocrine, and endocrine. We hypothesized that Adrenomedullin (ADM) - a peptide hormone that acts via its receptors, which are complexes of Calcitonin receptor-like receptor (CRLR) and Receptor activity-modifying protein (RAMP) 2 or 3-promotes oviductal fluid flow in the ampulla of bovine oviducts...
June 16, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28619288/effects-of-exogenous-leptin-on-seasonal-reproductive-responses-to-interacting-environmental-cues-in-female-siberian-hamsters
#8
Allison M Bailey, Sandra J Legan, Vicky J Meretsky, Gregory E Demas
Animals living in temperate climates respond to environmental cues that signal current and future resource availability to ensure that energy resources are available to support reproduction. Siberian hamsters (Phodopus sungorus) undergo robust gonadal regression in short, winter-like photoperiods as well as in response to mild food restriction in intermediate photoperiods. The goal of the present study was to investigate whether leptin is a relevant metabolic signal in regulating gonadal regression in response to diminishing food availability...
June 12, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28601153/equine-chorionic-gonadotropin-increases-fertility-of-grazing-dairy-cows-that-receive-fixed-time-artificial-insemination-in-the-early-but-not-later-postpartum-period
#9
Alexandre B Prata, Guilherme C S Pontes, Pedro Leopoldo J Monteiro, Jéssica N Drum, Milo C Wiltbank, Roberto Sartori
This study evaluated effects of equine chorionic gonadotropin (eCG) on fertility of 679 crossbred (Bos taurus x Bos indicus) lactating grazing cows synchronized for fixed-time AI (FTAI). At a random day of the estrous cycle cows received an intravaginal progesterone (P4) implant, 2 mg estradiol benzoate (EB) and 100 μg gonadorelin (D0-AM). On D7-AM, cows received 0.5 mg sodium cloprostenol and were randomly assigned into two treatments: eCG (n = 340; 400 IU eCG on D7), or Control (n = 339; no eCG). On D8-PM, P4 implants were removed and cows received 0...
August 2017: Theriogenology
https://www.readbyqxmd.com/read/28599864/the-anorectic-agent-lorcaserin-disturbs-estrous-cyclicity-and-produces-endometrial-hyperplasia-without-affecting-ovarian-population-in-female-rats
#10
Raghda T Abdel Latif, Sawsan A Zaitone, Yousra Abdel-Mottaleb, Nabila N El Maraghy
AIMS: The present study aims to investigate the effect of the new anorectic agent, lorcaserin, on estrous cyclicity, reproductive hormones and folliculogenesis in female mature rats. MATERIALS AND METHODS: Rats were divided into four groups; Group i: control group. Group ii-iv: rats treated with lorcaserin (5, 10 or 30mg/kg/day, p.o.), respectively. The treatment continued for 28days. KEY FINDINGS: Lorcaserin (5 or 10mg/kg) caused estrous cycle disturbance in 40% of treated rats while the high dose (30mg/kg) produced disturbances in 100% of the treated rats...
June 6, 2017: Life Sciences
https://www.readbyqxmd.com/read/28592693/non-genomic-actions-of-17-%C3%AE-estradiol-restore-respiratory-neuroplasticity-in-young-ovariectomized-female-rats
#11
Brendan J Dougherty, Elizabeth S Kopp, Jyoti J Watters
Gonadal steroids modulate CNS plasticity, including phrenic long-term facilitation (pLTF), a form of spinal respiratory neuroplasticity resulting in increased phrenic nerve motor output following exposure to acute intermittent hypoxia (aIH; three 5 min episodes, 10.5% O2). Despite the importance of respiratory system neuroplasticity, and its dependence on estrogen in males, little is known about pLTF expression or mechanisms of estrogen signaling in females. Here, we tested the hypotheses that: 1) pLTF expression in young, gonadally intact female rats would be expressed during estrous cycle stages in which 17β-estradiol (E2) is naturally high (e...
June 7, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28583609/global-hemostasis-in-healthy-bitches-during-pregnancy-and-at-different-estrous-cycle-stages-evaluation-of-routine-hemostatic-tests-and-thromboelastometry
#12
Sigal Klainbart, Alexandra Slon, Efrat Kelmer, Tali Bdolah-Abram, Tal Raz, Gilad Segev, Itamar Aroch, Smadar Tal
This study assessed the global hemostasis (including prothrombin time [PT], activated partial thromboplastin time [aPTT], antithrombin activity [ATA], fibrinogen and d-Dimer concentrations, platelet count, plateletcrit and thromboelastometry) in healthy pregnant bitches, comparing the results with those of healthy bitches at different estrous cycle stages, and assessed whether hemostatic changes during pregnancy are associated with serum progesterone concentration or the presence of fetuses in utero. The results show that pregnant bitches have higher fibrinogen concentration, platelet count and platelatecrit, and that fibrin and global clot formations occur faster than in non-pregnant bitches at different estrous cycle stages...
July 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28583606/the-influence-of-age-antral-follicle-count-and-diestrous-ovulations-on-estrous-cycle-characteristics-of-mares
#13
Anthony Claes, Barry A Ball, Kirsten E Scoggin, Janet F Roser, Elizabeth M Woodward, Gabriel M Davolli, Edward L Squires, Mats H T Troedsson
Reproductive aging must be well understood to optimize the reproductive management of older mares and to predict their reproductive life-span. The objectives of this study were to: 1) examine age-related differences in follicular dynamics, endocrine profiles, and primordial follicle counts, 2) evaluate the influence of antral follicle count (AFC) on age-related changes in follicular parameters, and 3) determine the influence of diestrous ovulations on the estrous cycle. Young (3-8yr; n = 10), middle-aged (9-18 yr; n = 16), and old (>18 yr; n = 19) light horse mares were examined with transrectal ultrasonography to monitor follicular growth over two consecutive estrous cycles...
July 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28582470/estradiol-upregulates-voltage-gated-sodium-channel-1-7-in-trigeminal-ganglion-contributing-to-hyperalgesia-of-inflamed-tmj
#14
Rui-Yun Bi, Zhen Meng, Peng Zhang, Xue-Dong Wang, Yun Ding, Ye-Hua Gan
BACKGROUND: Temporomandibular disorders (TMDs) have the highest prevalence in women of reproductive age. The role of estrogen in TMDs and especially in TMDs related pain is not fully elucidated. Voltage-gated sodium channel 1.7 (Nav1.7) plays a prominent role in pain perception and Nav1.7 in trigeminal ganglion (TG) is involved in the hyperalgesia of inflamed Temporomandibular joint (TMJ). Whether estrogen could upregulate trigeminal ganglionic Nav1.7 expression to enhance hyperalgesia of inflamed TMJ remains to be explored...
2017: PloS One
https://www.readbyqxmd.com/read/28580886/normal-developmental-and-estrous-cycle-dependent-histological-features-of-the-female-reproductive-organs-in-microminipigs
#15
Akihisa Kangawa, Masayoshi Otake, Satoko Enya, Toshinori Yoshida, Masatoshi Shibata
The microminipig has become an increasingly attractive animal model for various experimental practices because of its manageable size; however, studies of the histological features of the female reproductive organs in microminipigs are limited. The present study investigates the sexual development of the reproductive organs and the cyclical changes during the estrous cycle in female microminipigs. The ovaries, oviducts, uteri, and vaginal tissues from 33 animals aged 0 to 26 months were utilized in this study...
January 1, 2017: Toxicologic Pathology
https://www.readbyqxmd.com/read/28559995/cryptotanshinone-reverses-reproductive-disturbances-in-rats-with-dehydroepiandrosterone-induced-polycystic-ovary-syndrome
#16
Yanqiu Xia, Pei Zhao, Hongli Huang, Yuan Xie, Rong Lu, Li Dong
Polycystic ovarian syndrome (PCOS), with a prevalence of 5-8%, is the most common endocrine disorder in women of reproductive age. Although cryptotanshinone (CRY) has been shown to effectively reverse reproductive disturbances, it remains poorly understood whether it can be used to treat PCOS. Here we used an established rat model of PCOS. Prepubertal female Sprague-Dawley rats were subcutaneously injected with dehydroepiandrosterone (DHEA) 60 mg/kg/day for 3 weeks. Those in the DHEA group were given normal saline, while the CRY group was given 27 mg/kg by gastrogavage for 3 weeks...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28558787/airway-exposure-to-multi-walled-carbon-nanotubes-disrupts-the-female-reproductive-cycle-without-affecting-pregnancy-outcomes-in-mice
#17
H K L Johansson, J S Hansen, B Elfving, S P Lund, Z O Kyjovska, S Loft, K K Barfod, P Jackson, U Vogel, K S Hougaard
BACKGROUND: The use of multiwalled carbon nanotubes (MWCNT) is increasing due to a growing use in a variety of products across several industries. Thus, occupational exposure is also of increasing concern, particularly since airway exposure to MWCNTs can induce sustained pulmonary acute phase response and inflammation in experimental animals, which may affect female reproduction. This proof-of-principle study therefore aimed to investigate if lung exposure by intratracheal instillation of the MWCNT NM-400 would affect the estrous cycle and reproductive function in female mice...
May 30, 2017: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/28558271/the-effects-of-social-contact-on-cocaine-intake-in-female-rats
#18
Andrea M Robinson, Gaylen E Fronk, Huailin Zhang, Scott Tonidandel, Mark A Smith
BACKGROUND: Studies conducted in male rats report that social contact can either facilitate or inhibit drug intake depending on the behavior of social partners. The purpose of the present study was to: (1) examine the effects of social contact on cocaine intake in female rats, (2) examine the behavioral mechanisms by which social contact influences cocaine intake, and (3) examine whether the estrous cycle moderates the effects of social contact on cocaine intake. METHODS: Female rats were assigned to either isolated or pair-housed conditions in which a social partner either had access to cocaine (cocaine partner) or did not have access to cocaine (abstinent partner)...
May 24, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28549990/early-transcriptome-responses-of-the-bovine-midcycle-corpus-luteum-to-prostaglandin-f2%C3%AE-includes-cytokine-signaling
#19
Heather Talbott, Xiaoying Hou, Fang Qiu, Pan Zhang, Chittibabu Guda, Fang Yu, Robert A Cushman, Jennifer R Wood, Cheng Wang, Andrea S Cupp, John S Davis
In ruminants, prostaglandin F2alpha (PGF2α)-mediated luteolysis is essential prior to estrous cycle resumption, and is a target for improving fertility. To deduce early PGF2α-provoked changes in the corpus luteum a short time-course (0.5-4 h) was performed on cows at midcycle. A microarray-determined transcriptome was established and examined by bioinformatic pathway analysis. Classic PGF2α effects were evident by changes in early response genes (FOS, JUN, ATF3) and prediction of active pathways (PKC, MAPK)...
May 23, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28549157/exposure-to-acute-psychosocial-stress-disrupts-the-luteinizing-hormone-surge-independent-of-estrous-cycle-alterations-in-female-mice
#20
Elizabeth R Wagenmaker, Suzanne M Moenter
The disruptive effects of severe stress on reproductive function are well documented, but surprisingly few studies exist that demonstrate milder psychosocial stressors interfere with the ovarian cycle in females. We hypothesized repeated application of psychosocial stress would disrupt estrous cycles in mice. Mice were transferred to a new cage, transported to a new room and restrained (2h) for 21 consecutive days. Contrary to our hypothesis, this paradigm did not affect estrous cycles. We next tested the hypothesis that a single exposure to mild stress disrupts a specific aspect of the cycle: the proestrous luteinizing hormone (LH) surge...
May 25, 2017: Endocrinology
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