keyword
MENU ▼
Read by QxMD icon Read
search

parturition

keyword
https://www.readbyqxmd.com/read/28231256/advancing-the-match-mismatch-framework-for-large-herbivores-in-the-arctic-evaluating-the-evidence-for-a-trophic-mismatch-in-caribou
#1
David Gustine, Perry Barboza, Layne Adams, Brad Griffith, Raymond Cameron, Kenneth Whitten
Climate-induced shifts in plant phenology may adversely affect animals that cannot or do not shift the timing of their reproductive cycle. The realized effect of potential trophic "mismatches" between a consumer and its food varies with the degree to which species rely on dietary income and stored capital. Large Arctic herbivores rely heavily on maternal capital to reproduce and give birth near the onset of the growing season but are they vulnerable to trophic mismatch? We evaluated the long-term changes in the temperatures and characteristics of the growing seasons (1970-2013), and compared growing conditions and dynamics of forage quality for caribou at peak parturition, peak lactation, and peak forage biomass, and plant senescence between two distinct time periods over 36 years (1977 and 2011-13)...
2017: PloS One
https://www.readbyqxmd.com/read/28231043/transient-oxytocin-signaling-primes-the-development-and-function-of-excitatory-hippocampal-neurons
#2
Silvia Ripamonti, Mateusz C Ambrozkiewicz, Francesca Guzzi, Marta Gravati, Gerardo Biella, Ingo Bormuth, Matthieu Hammer, Liam P Tuffy, Albrecht Sigler, Hiroshi Kawabe, Katsuhiko Nishimori, Mauro Toselli, Nils Brose, Marco Parenti, JeongSeop Rhee
Beyond its role in parturition and lactation, oxytocin influences higher brain processes that control social behavior of mammals, and perturbed oxytocin signaling has been linked to the pathogenesis of several psychiatric disorders. However, it is still largely unknown how oxytocin exactly regulates neuronal function. We show that early, transient oxytocin exposure in vitro inhibits the development of hippocampal glutamatergic neurons, leading to reduced dendrite complexity, synapse density, and excitatory transmission, while sparing GABAergic neurons...
February 23, 2017: ELife
https://www.readbyqxmd.com/read/28230329/integrating-trans-abdominal-ultrasonography-with-fecal-steroid-metabolite-monitoring-to-accurately-diagnose-pregnancy-and-predict-the-timing-of-parturition-in-the-red-panda-ailurus-fulgens-styani
#3
Erin Curry, Lissa J Browning, Paul Reinhart, Terri L Roth
Red pandas (Ailurus fulgens styani) exhibit a variable gestation length and may experience a pseudopregnancy indistinguishable from true pregnancy; therefore, it is not possible to deduce an individual's true pregnancy status and parturition date based on breeding dates or fecal progesterone excretion patterns alone. The goal of this study was to evaluate the use of transabdominal ultrasonography for pregnancy diagnosis in red pandas. Two to three females were monitored over 4 consecutive years, generating a total of seven profiles (four pregnancies, two pseudopregnancies, and one lost pregnancy)...
February 23, 2017: Zoo Biology
https://www.readbyqxmd.com/read/28226203/characteristic-changes-in-decidual-gene-expression-signature-in-spontaneous-term-parturition
#4
Haidy El-Azzamy, Andrea Balogh, Roberto Romero, Yi Xu, Christopher LaJeunesse, Olesya Plazyo, Zhonghui Xu, Theodore G Price, Zhong Dong, Adi L Tarca, Zoltan Papp, Sonia S Hassan, Tinnakorn Chaiworapongsa, Chong Jai Kim, Nardhy Gomez-Lopez, Nandor Gabor Than
Background: The decidua has been implicated in the "terminal pathway" of human term parturition, which is characterized by the activation of pro-inflammatory pathways in gestational tissues. However, the transcriptomic changes in the decidua leading to terminal pathway activation have not been systematically explored. This study aimed to compare the decidual expression of developmental signaling and inflammation-related genes before and after spontaneous term labor in order to reveal their involvement in this process...
February 22, 2017: Journal of Pathology and Translational Medicine
https://www.readbyqxmd.com/read/28222133/maternal-psychological-stress-induced-developmental-disability-neonatal-mortality-and-stillbirth-in-the-offspring-of-wistar-albino-rats
#5
Sakthivel Govindaraj, Annadurai Shanmuganathan, Ravindran Rajan
BACKGROUND: Stress is an inevitable part of life, and maternal stress during the gestational period has dramatic effects in the early programming of the physiology and behavior of offspring. The developmental period is crucial for the well-being of the offspring. Prenatal stress influences the developmental outcomes of the fetus, in part because the developing brain is particularly vulnerable to stress. The etiology of birth defects of the offspring is reported to be 30-40% genetic and 7-10% multifactorial, with the remaining 50% still unknown and also there is no clear cause for neonatal mortality and still-birth...
2017: PloS One
https://www.readbyqxmd.com/read/28221829/the-evolutionary-economics-of-embryonic-sac-fluids-in-squamate-reptiles
#6
Xavier Bonnet, Guy Naulleau, Richard Shine
The parchment-shelled eggs of squamate reptiles take up substantial water from the nest environment, enabling the conversion of yolk into neonatal tissue and buffering the embryo against the possibility of subsequent dry weather. During development, increasing amounts of water are stored in the embryonic sacs (i.e., membranes around the embryo: amnion, allantois, and chorion). The evolution of viviparity (prolonged uterine retention of developing embryos) means that embryonic-sac fluid storage now imposes a cost (increased maternal burdening), confers less benefit (because the mother buffers fetal water balance), and introduces a potential conflict among uterine siblings (for access to finite water supplies)...
March 2017: American Naturalist
https://www.readbyqxmd.com/read/28218391/mapk3-1-participates-in-the-activation-of-primordial-follicles-through-mtorc1-kitl-signaling
#7
Yu Zhao, Yu Zhang, Jia Li, Nana Zheng, Xiaoting Xu, Jing Yang, Guoliang Xia, Meijia Zhang
The majority of ovarian primordial follicles are preserved in a dormant state to maintain the female reproductive lifespan, and only a few primordial follicles are activated to enter the growing follicle pool in each wave. Recent studies have shown that primordial follicular activation depends on mammalian target of rapamycin complex 1 (mTORC1)-KIT ligand (KITL) signaling in pre-granulosa cells and its receptor (KIT)-phosphoinositol 3 kinase (PI3K) signaling in oocytes. However, the upstream regulator of mTORC1 signaling is unclear...
February 20, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28216513/cellular-localization-expression-and-functional-implications-of-the-utero-placental-endothelin-system-during-maintenance-and-termination-of-canine-gestation
#8
Aykut Gram, Alois Boos, Mariusz P Kowalewski
Utero-placental (Ut-Pl) angiogenesis and blood flow are fundamental for successful outcome of pregnancy. They are controlled by numerous vasodilator and vasoconstrictor systems such as endothelins (EDNs) and the renin angiotensin system. Dogs possess an invasive type of placentation, classified as endotheliochorial. Despite increasing knowledge regarding canine Ut-Pl function, little information exists on uterine and placental vascular activity during initiation, maintenance and termination of pregnancy in this species...
February 20, 2017: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/28215893/short-communication-diagnostic-performance-of-on-farm-bacteriological-culture-systems-for-identification-of-uterine-escherichia-coli-in-postpartum-dairy-cows
#9
J Dubuc
The objectives of this study were to validate the performance of on-farm bacteriological culture systems for identification of Escherichia coli in the uterus of early postpartum dairy cows and to determine if an association is present between the results and the subsequent occurrence of puerperal metritis (PM). A prospective cohort study was conducted in one commercial Holstein dairy herd in which 400 cows were sampled between 24 and 48 h after parturition. Three bacteriological samples were obtained from the uterus of each cow and were cultured for identification of E...
February 16, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28215891/thoracic-ultrasound-assessment-of-lung-consolidation-at-weaning-in-holstein-dairy-heifers-reproductive-performance-and-survival
#10
A G V Teixeira, J A A McArt, R C Bicalho
The objective of this study was to determine the association of lung consolidation at weaning with later reproductive performance and survival. Ultrasonography of the lungs was performed at 60 d of life in recently weaned Holstein heifer calves from a single farm in New York State. Thoracic screening covered the right 2nd through 10th and left 3rd through 9th intercostal spaces and was performed using a 6.2-MHz linear transducer. Each calf was classified as not having lung consolidation (hyperechoic line with reverberation artifact with or without comet tail) or with lung consolidation (any detectable heterogeneous hypoechoic area)...
February 16, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28215693/incidence-of-double-ovulation-during-the-early-postpartum-period-in-lactating-dairy-cows
#11
Hiromi Kusaka, Hiroshi Miura, Motohiro Kikuchi, Minoru Sakaguchi
In lactating cattle, the incidence of twin calving has many negative impacts on production and reproduction in dairy farming. In almost all cases, natural twinning in dairy cattle is the result of double ovulation. It has been suggested that the milk production level of cows influences the number of ovulatory follicles. The objective of the present study was to investigate the incidence of double ovulations during the early postpartum period in relation to the productive and reproductive performance of dairy cows...
March 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28215686/transrectal-doppler-sonography-of-uterine-blood-flow-in-ewes-during-pregnancy
#12
Renato Travassos Beltrame, Carolina Covre, Lucas Buss Littig, Amanda de Barros Martins, Celia Raquel Quirino, Aylton Bartholazzi Junior, Ricardo Lopes Dias da Costa
In sheep, there is a lack of information on the behaviour of hemodynamic indices and parameters of blood flow velocity of the uterine artery during pregnancy, making it impossible to determine the real meaning of the values found and their probable relevance in normal physiological or pathological states. The objective of the present study was to evaluate the blood flow velocity parameters and hemodynamic indices of the uterine artery in ewes (18) during pregnancy (33). Based on non-invasive colour Doppler sonography, we evaluated the peak systolic velocity (PS), end diastolic velocity (ED), time-averaged maximum and minimum velocity in a cardiac cycle (TAMAX and TAMEAN), pulsatility index (PI), resistance index (RI), systolic/diastolic ratio (S/D), heart rate (HR), arterial diameter (AD) and the blood flow volume (BFV)...
March 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28201937/selenium-methionine-and-chromium-methionine-supplementation-of-sheep-around-parturition-impacts-on-dam-and-offspring-performance
#13
Amir Mousaie, Reza Valizadeh, Mahmoud Chamsaz
To examine the effects of maternal energy restriction along with selenium-methionine (Se-Met) and chromium-methionine (Cr-Met) supplementation on performance of pregnant sheep and their offspring, the following treatments were allotted randomly to 40 multiparous Baluchi ewes (53.9 ± 1.15 kg of body weight [BW]) from 5 weeks prior to 5 weeks after parturition: (1) Control diet (60% and 100% of NRC energy requirements in pre- and post-partum, respectively); (2) Control diet plus 5 mg Se-Met/kg dry matter (DM); (3) Control diet plus 3 mg Cr-Met/kg DM and (4) Control diet plus 5 mg Se-Met and 3 mg Cr-Met/kg DM (Se-Cr-Met) of concentrate diet...
April 2017: Archives of Animal Nutrition
https://www.readbyqxmd.com/read/28199337/investigating-hybridization-between-the-two-sibling-bat-species-myotis-myotis-and-m-blythii-from-guano-in-a-natural-mixed-maternity-colony
#14
Eve Afonso, Anne-Claude Goydadin, Patrick Giraudoux, Gilles Farny
Because they can form seasonal mixed-species groups during mating and maternal care, bats are exciting models for studying interspecific hybridization. Myotis myotis and M. blythii are genetically close and morphologically almost identical, but they differ in some aspects of their ecology and life-history traits. When they occur in sympatry, they often form large mixed maternity colonies, in which their relative abundance can vary across time due to a shift in the timing of parturition. For the first time, we used non-invasive genetic methods to assess the hybridization rate and colony composition in a maternity colony of M...
2017: PloS One
https://www.readbyqxmd.com/read/28196398/factors-of-influence-and-social-correlates-of-parturition-in-captive-campbell-s-monkeys-case-study-and-breeding-data
#15
Alban Lemasson, Ronan Jubin, Philippe Bec, Martine Hausberger
How nonhuman primates deal with birth, at the moment of delivery, and during the following days, remains poorly explored because of the unpredictability of this event, particularly for forest-dwelling arboreal species. Available studies highlight intra- and interspecific variation which suggest flexibility of the timing of delivery, of behavior associated with labor contractions and parturition, and the social context and ambient noise surrounding delivery. Here, we present the findings of a two-decade survey of reproduction in a population of captive Campbell's monkeys...
February 14, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28194822/autophagy-regulation-of-physiological-and-pathological-processes-in-the-female-reproductive-tract
#16
Bin Cao, Alison J Camden, Lindsay A Parnell, Indira U Mysorekar
Autophagy is a ubiquitous cell recycling pathway that delivers cytoplasmic constituents to the lysosome and is essential for normal cellular function. Autophagic activity is up-regulated under physiological conditions as well as stressful conditions such as nutrient deprivation, oxidative stress, hypoxia, inflammation, and infection. Thus, it is essential to regard the functional importance of the pathway and its components in a given tissue context. Here we review what is known about the involvement of autophagy process during physiological processes in the female reproductive tract and in pregnancy from preimplantation to oocyte function to placental development, parturition, and postpartum remodeling of the uterus; as well as in pathological and adverse events during these processes...
February 13, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28193309/sow-and-piglet-factors-determining-variation-of-colostrum-intake-between-and-within-litters
#17
I Declerck, S Sarrazin, J Dewulf, D Maes
Colostrum intake has a short- and long-term beneficial impact on piglet performance and mortality. Sows' colostrum production and piglets' colostrum intake are limited and highly variable. The present study investigated sow and piglet factors explaining the variation of colostrum intake between and within litters. The CV for colostrum intake and birth weight (BWb) of all piglets within a litter was calculated to evaluate the variation of colostrum intake and BWb within a litter (colostrum and litter BWb heterogeneity, respectively)...
February 14, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28190408/net-mineral-requirements-of-dairy-goats-during-pregnancy
#18
C J Härter, L D Lima, D S Castagnino, H O Silva, F O M Figueiredo, N R St-Pierre, K T Resende, I A M A Teixeira
Mineral requirements of pregnant dairy goats are still not well defined; therefore, we investigated the net Ca, P, Mg, Na and K requirements for pregnancy and for maintenance during pregnancy in two separate experiments. Experiment 1 was performed to estimate the net Ca, P, Mg, Na and K requirements in goats carrying single or twin fetuses from 50 to 140 days of pregnancy (DOP). The net mineral requirements for pregnancy were determined by measuring mineral deposition in gravid uterus and mammary gland after comparative slaughter...
February 13, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28188768/frequency-of-toxocara-spp-antibodies-in-umbilical-cords-of-newborns-attended-atthe-university-hospital-in-southern-brazil-and-factors-associated-with-infection
#19
Paula Costa Santos, Paula Lima Telmo, Lis Maurente Lehmann, Carolina Lorenzi, Carolina Hirsch, Gabriela Torres Mattos, Gabriel Baracy Klafke, Maria Elisabeth Aires Berne, Carla Vitola Gonçalves, Carlos James Scaini
Toxocariasis is a neglected and geographically widespread parasitic disease. The detection of specific antibodies associated with this disease is required to confirm its clinical diagnosis and to aid in prevention. Although helminth infection during pregnancy can promote foetal immune responses with long-term effects, specific information regarding the risk of Toxocara spp. infection to the human foetus during pregnancy is lacking.Therefore,the present study aimed to investigate the frequency of antibodies against Toxocara spp...
February 7, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28186655/chronic-transgenerational-vitamin-b12-deficiency-of-severe-and-moderate-magnitudes-modulates-adiposity-probable-underlying-mechanisms
#20
Shampa Ghosh, Jitendra Kumar Sinha, Bojanapalli Muralikrishna, Uday Kumar Putcha, Manchala Raghunath
We have demonstrated previously that severe but not moderate vitamin B12 deficiency altered body composition and induced adiposity in female C57BL/6 mice. This study aims to elucidate the effects of chronic transgenerational dietary vitamin B12 restriction on body composition and various biochemical parameters in the F1 generation offspring of our mouse models of severe and moderate vitamin B12 deficiency established earlier. Female weanling C57BL/6 mice received, ad libitum, for 4 weeks a (i) control diet, (ii) vitamin B12-restricted diet with pectin as dietary fiber (severely deficient diet), or (iii) vitamin B12-restricted diet with cellulose as dietary fiber (moderately deficient diet) and then mated with control males...
February 10, 2017: BioFactors
keyword
keyword
105148
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"