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https://www.readbyqxmd.com/read/28819795/leptin-regulation-of-synaptic-function-at-hippocampal-ta-ca1-and-sc-ca1-synapses-implications-for-health-and-disease
#1
Gemma McGregor, Jenni Harvey
Growing evidence indicates that the endocrine hormone leptin regulates hippocampal synaptic function in addition to its established role as a hypothalamic satiety signal. Indeed, numerous studies show that leptin facilitates the cellular events that underlie hippocampal learning and memory including activity-dependent synaptic plasticity and glutamate receptor trafficking, indicating that leptin may be a potential cognitive enhancer. Although there has been extensive investigation into the modulatory role of leptin at hippocampal Schaffer collateral (SC)-CA1 synapses, recent evidence indicates that leptin also potently regulates excitatory synaptic transmission at the anatomically distinct temporoammonic (TA) input to hippocampal CA1 neurons...
August 18, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28814333/rapamycin-prevents-cyclophosphamide-induced-over-activation-of-primordial-follicle-pool-through-pi3k-akt-mtor-signaling-pathway-in-vivo
#2
Linyan Zhou, Yanqiu Xie, Song Li, Yihua Liang, Qi Qiu, Haiyan Lin, Qingxue Zhang
BACKGROUND: Primordial follicular depletion has thought to be a common adverse effect of chemotherapy especially for female of reproductive age. The study aimed to evaluate the protective effect of rapamycin on the primordial follicles and its potential mechanism for patients receiving chemotherapy. METHODS: 8-week old BALB/c female mice were randomly assigned into four groups (control; rapamycin; cyclophosphamide; and rapamycin combined with cyclophosphamide). Hematoxylin staining, immunohistochemical, TUNEL, western blotting and ELISA were employed to assess inter-group differences using Student's t-test and Mann-Whitney test...
August 16, 2017: Journal of Ovarian Research
https://www.readbyqxmd.com/read/28814190/effects-of-neonatal-exposure-to-zearalenone-on-puberty-timing-hypothalamic-nuclei-of-avpv-and-arc-and-reproductive-functions-in-female-mice
#3
Rahmatollah Parandin, Morteza Behnam-Rassouli, Nasser Mahdavi-Shahri
It is now established that mycoestrogen zearalenone (ZEN) disrupts reproductive physiology, but the specific mechanisms by which this occurs remain unknown, especially in brain. Growing evidence suggests that populations of estradiol (E2)-sensitive neurons in anteroventral periventricular (AVPV) and arcuate (ARC) nuclei, especially kisspeptin neurons, play a pivotal role in the timing of puberty onset, ovulation, and normal reproduction. The present study was conducted to find whether the ZEN can cause estrogen-like actions during the critical period of neonatal differentiation...
September 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28811670/sex-dependent-effects-of-cannabis-and-cannabinoids-a-translational-perspective
#4
Ziva D Cooper, Rebecca M Craft
Recent policy changes have led to significant increases in the use of cannabis for both medical and recreational purposes. Although men are more likely to endorse past month cannabis use and are more frequently diagnosed with Cannabis Use Disorder relative to women, a growing proportion of medical cannabis users are reported to be women. The increased popularity of cannabis for medical purposes and the narrowing gap in prevalence of use between men and women raises questions regarding sex-dependent effects related to therapeutic efficacy and negative health effects of cannabis and cannabinoids...
July 17, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28810889/dehydroepiandrosterone-sulfate-and-dehydroepiandrosterone-sulfate-cortisol-ratio-in-cirrhotic-patients-with-septic-shock-another-sign-of-hepatoadrenal-syndrome
#5
Ming-Hung Tsai, Hui-Chun Huang, Yun-Shing Peng, Yung-Chang Chen, Ya-Chung Tian, Chih-Wei Yang, Jau-Min Lien, Ji-Tseng Fang, Cheng-Shyong Wu, Sen-Yung Hsieh, Fa-Yauh Lee
BACKGROUND: Cirrhotic patients are susceptible to sepsis and critical illness-related corticosteroid insufficiency (CIRCI). Dehydroepiandrosterone sulfate (DHEAS) is a corticotropin-dependent adrenal androgen, which has immunostimulating and antiglucocorticoid effects. Considering the synchronized synthesis of cortisol and DHEAS and their opposing effects to each other, investigators have proposed measuring these two hormones as a ratio. Severe sepsis has been associated with low DHEAS, especially relative to high cortisol...
August 15, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28805533/women-veterans-and-menopause-knowledge-and-preferences
#6
Noella A Dietz, Tatiana Mijares-Cantrell, Daisy Acevedo, Debra Annane, Remberto Rodriguez, Panagiota Caralis, Silvina Levis
BACKGROUND: The increasing number and older age of women Veterans receiving care at Veterans Health Administration (VHA) requires healthcare providers to adjust to their changing patient population. We explored women Veterans' self-reported knowledge of menopause, current/preferred sources of menopausal health information, and perceptions/barriers regarding treatment of menopausal symptoms. METHODS: Three focus groups were conducted at two South Florida VHA facilities in 2014, which included 30 women Veterans (aged 45-60 years) who visited VHA primary care clinics at least once in the past year...
August 14, 2017: Women & Health
https://www.readbyqxmd.com/read/28803147/ovarian-hormones-sleep-and-cognition-across-the-adult-female-lifespan-an-integrated-perspective
#7
REVIEW
Nicole J Gervais, Jessica A Mong, Agnès Lacreuse
Loss of ovarian function in women is associated with sleep disturbances and cognitive decline, which suggest a key role for estrogens and/or progestins in modulating these symptoms. The effects of ovarian hormones on sleep and cognitive processes have been studied in separate research fields that seldom intersect. However, sleep has a considerable impact on cognitive function. Given the tight connections between sleep and cognition, ovarian hormones may influence selective aspects of cognition indirectly, via the modulation of sleep...
August 9, 2017: Frontiers in Neuroendocrinology
https://www.readbyqxmd.com/read/28801380/vitamin-d-and-immunomodulation-is-it-time-to-change-the-reference-values
#8
Giulia Bivona, Luisa Agnello, Marcello Ciaccio
The term "vitamin D" refers to two chemical compounds - ergosterol, or vitamin D2, and cholecalciferol, or vitamin D3. Active vitamin D3 is correctly regarded as a neurohormone due to its pleiotropic biological activities. Although the relation between vitamin D and calcium-phosphorus metabolism has never been discussed, the knowledge on many other roles vitamin D plays is growing fast. Briefly, vitamin D immunomodulation includes attenuation and stimulation of Th1 and Th2 cell proliferation, respectively. Similarly, vitamin D can induce or inhibit the synthesis, secretion, and release of anti- inflammatory (IL-4 and IL-10) and pro-inflammatory (IL-1, TNF-α, IFN-γ) cytokines, respectively...
August 2017: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/28793867/the-effect-of-nullomer-derived-peptides-9r-9s1r-and-124r-on-the-nci-60-panel-and-normal-cell-lines
#9
Abdelkrim Alileche, Greg Hampikian
BACKGROUND: Nullomer peptides are the smallest sequences absent from databases of natural proteins. We first began compiling a list of absent 5-amino acid strings in 2006 (1). We report here the effects of Nullomer-derived peptides 9R, 9S1R and 124R on the NCI-60 panel, derived from human cancers of 9 organs (kidney, ovary, skin melanoma, lung, brain, lung, colon, prostate and the hematopoietic system), and four normal cell lines (endothelial HUVEC, skin fibroblasts BJ, colon epithelial FHC and normal prostate RWPE-1)...
August 9, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28791295/fertility-preservation-in-endometriosis-patients-anti-m%C3%A3-llerian-hormone-is-a-reliable-marker-of-the-ovarian-follicle-density
#10
Elisabetta Garavaglia, Cinzia Sala, Gianluca Taccagni, Michela Traglia, Caterina Barbieri, Stefano Ferrari, Massimo Candiani, Paola Panina-Bordignon, Daniela Toniolo
OBJECTIVE: To analyze the ovarian reserve via measurement of follicular density and anti-Müllerian hormone (AMH) in endometriosis patients participating to a clinical program of cortical ovarian cryopreservation. DESIGN: Retrospective analysis of serum AMH levels and prospective investigation of ovarian follicle number. SETTING: University Hospital. PATIENTS: Two hundred and two women with endometriosis and 400 controls...
2017: Frontiers in Surgery
https://www.readbyqxmd.com/read/28780881/-phytoestrogens-in-the-treatment-of-menopause
#11
Júlia Remport, Anna Blázovics
In previous centuries many women did not even live until their menopause years due to poor economic conditions, deficiencies of medicine, epidemics and wars. Nowadays in the developed countries, people live until they are 75-80 years old, and with the expansion of average age, the number of people affected by menopause and the years spent in that state increase. Nowadays women spend one third of their lives in the menopausal stage. The only effective way to treat unpleasant symptoms for centuries was with the use of herbs, and the knowledge about them spread through oral tradition...
August 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28776922/efficacy-and-pharmacokinetics-of-subcutaneous-exendin-9-39-in-patients-with-post-bariatric-hypoglycemia
#12
Colleen M Craig, Li-Fen Liu, Thi Nguyen, Candice Price, Justus Bingham, Tracey L McLaughlin
AIM: Post-bariatric hypoglycemia (PBH) is a rare but growing complication of bariatric surgery with severe, debilitating, potentially life-threatening consequences and no safe and effective treatment. Previous studies involving continuous intravenous (IV) infusion of the glucagon-like peptide-1 (GLP-1) receptor antagonist, exendin (9-39) (Ex-9) in patients with PBH have demonstrated efficacy in preventing symptomatic postprandial hypoglycemia. Subcutaneous (SC) injection of Ex-9 would represent a more practical therapeutic approach...
August 4, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28776104/heat-or-cold-priming-induced-cross-tolerance-to-abiotic-stresses-in-plants-key-regulators-and-possible-mechanisms
#13
REVIEW
Mohammad Anwar Hossain, Zhong-Guang Li, Tahsina Sharmin Hoque, David J Burritt, Masayuki Fujita, Sergi Munné-Bosch
Plants growing under field conditions are constantly exposed, either simultaneously or sequentially, to more than one abiotic stress factor. Plants have evolved sophisticated sensory systems to perceive a number of stress signals that allow them to activate the most adequate response to grow and survive in a given environment. Recently, cross-stress tolerance (i.e. tolerance to a second, strong stress after a different type of mild primary stress) has gained attention as a potential means of producing stress-resistant crops to aid with global food security...
August 4, 2017: Protoplasma
https://www.readbyqxmd.com/read/28769960/transcriptome-analysis-of-the-sm-mediated-hypersensitive-response-to-stemphylium-lycopersici-in-tomato
#14
Huanhuan Yang, Tingting Zhao, Jingbin Jiang, Xiuling Chen, He Zhang, Guan Liu, Dongye Zhang, Chong Du, Songbo Wang, Xiangyang Xu, Jingfu Li
Gray leaf spot disease caused by Stemphylium lycopersici is a major disease in cultivated tomato plants and threatens tomato-growing areas worldwide. Sm is a single dominant gene that confers resistance to tomato gray leaf spot disease agent. However, the underlying molecular mechanism remains unclear. Here, resistant (cv. Motelle, containing the Sm gene) and susceptible (cv. Moneymaker) plants were inoculated with virulent Stemphylium lycopersici isolate at a time point at which both cultivars showed a strong response to S...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28758506/exposure-to-modern-widespread-environmental-endocrine-disrupting-chemicals-and-their-effect-on-the-reproductive-potential-of-women-an-overview-of-current-epidemiological-evidence
#15
Anetta Karwacka, Dorota Zamkowska, Michał Radwan, Joanna Jurewicz
Growing evidence indicates that exposure to widespread, environmental contaminants called endocrine disruptors (EDCs) negatively affects animal and human reproductive health and has been linked to several diseases including infertility. This review aims to evaluate the impact of environmental exposure to endocrine disrupting chemicals [phthalates, parabens, triclosan, bisphenol A (BPA), organochlorine (PCBs) and perfluorinated (PFCs) compounds] on the reproductive potential among women, by reviewing most recently published literature...
July 31, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28757214/vulnerability-of-marsh-frog-pelophylax-ridibundus-to-the-typical-wastewater-effluents-ibuprofen-triclosan-and-estrone-detected-by-multi-biomarker-approach
#16
Halina I Falfushynska, Lesya L Gnatyshyna, Oksana Horyn, Oksana B Stoliar
Pharmaceutical and personal care products (PPCPs) are the environmental pollutants of growing concern. The aim of this study was to indicate the effects of typical PPCPs on the marsh frog Pelophylax ridibundus. We treated male frogs with waterborne ibuprofen (IBU, 250ng·L(-1)), triclosan (TCS, 500ng·L(-1)), or estrone (E1, 100ng·L(-1)) for 14days. Common vulnerability of the frogs was detected from dramatic decrease of Zn, total and metalated metallothionein (MT) concentrations, Zn/Cu ratio, the elevation of activity of glutathione-S-transferase, cathepsin D and DNA instability in the liver, the depletion of cholinesterase in the brain and cortisol in the blood plasma in all exposures...
July 27, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/28751364/circadian-repressors-cry1-and-cry2-broadly-interact-with-nuclear-receptors-and-modulate-transcriptional-activity
#17
Anna Kriebs, Sabine D Jordan, Erin Soto, Emma Henriksson, Colby R Sandate, Megan E Vaughan, Alanna B Chan, Drew Duglan, Stephanie J Papp, Anne-Laure Huber, Megan E Afetian, Ruth T Yu, Xuan Zhao, Michael Downes, Ronald M Evans, Katja A Lamia
Nuclear hormone receptors (NRs) regulate physiology by sensing lipophilic ligands and adapting cellular transcription appropriately. A growing understanding of the impact of circadian clocks on mammalian transcription has sparked interest in the interregulation of transcriptional programs. Mammalian clocks are based on a transcriptional feedback loop featuring the transcriptional activators circadian locomotor output cycles kaput (CLOCK) and brain and muscle ARNT-like 1 (BMAL1), and transcriptional repressors cryptochrome (CRY) and period (PER)...
August 15, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28735384/influence-of-feeding-inorganic-vanadium-on-growth-performance-endocrine-variables-and-biomarkers-of-bone-health-in-crossbred-calves
#18
Ravi Prakash Pal, Veena Mani, Deepika Tripathi, Rajesh Kumar, Neelam J Kewalramani
The nutritional essentialities of transition element vanadium (V) as micro-nutrient in farm animals have not yet been established, though in rat model, vanadium as vanadate has been reported to exert insulin-mimetic effect and shown to be needed for proper development of bones. The objective of this study was to determine the effect of V supplementation on growth performance, plasma hormones and bone health status in calves. Twenty-four crossbred calves (body weight 72.83 ± 2.5 kg; age 3-9 months) were blocked in four groups and randomly assigned to four treatment groups (n = 6) on body weight and age basis...
July 22, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28735146/influence-of-electromagnetic-pulse-on-the-offspring-sex-ratio-of-male-balb-c-mice
#19
Jin-Hui Li, Da-Peng Jiang, Ya-Feng Wang, Jia-Jia Yan, Qi-Yan Guo, Xia Miao, Hai-Yang Lang, Sheng-Long Xu, Jun-Ye Liu, Guo-Zhen Guo
Public concern is growing about the exposure to electromagnetic fields (EMF) and its effect on male reproductive health. Detrimental effect of EMF exposure on sex hormones, reproductive performance and sex-ratio was reported. The present study was designed to clarify whether paternal exposure to electromagnetic pulse (EMP) affects offspring sex ratio in mice. 50 male BALB/c mice aged 5-6 weeks were exposed to EMP daily for 2 weeks before mated with non-exposed females at 0d, 7d, 14d, 21d and 28d after exposure...
June 21, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28734138/ghrelin-plasma-concentration-does-not-covary-with-energy-demand-in-adult-laying-hens
#20
A Höhne, L Schrader, S Weigend, S Petow
The peptide hormone ghrelin is suggested to be involved in food intake regulation in young growing chicken. Whether ghrelin is involved in the regulation of energetic balance associated with laying performance in adult laying hens was studied by use of 4 chicken lines that differ in laying performance and phylogeny (4 lines; 16 hens per line). As housing conditions are also known to affect energy demand, half of the hens per line were housed in single cages and the other half of hens were maintained in a floor housing system...
June 29, 2017: Domestic Animal Endocrinology
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