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https://www.readbyqxmd.com/read/27926517/suberoylanilide-hydroxamic-acid-induced-specific-epigenetic-regulation-controls-leptin-induced-proliferation-of-breast-cancer-cell-lines
#1
Xiuyan Feng, Han Han, Dan Zou, Jiaming Zhou, Weiqiang Zhou
Breast cancer is one of the most common malignancies among women in the world, investigating the characteristics and special transduction pathways is important for better understanding breast development and tumorigenesis. Leptin, a peptide hormone secreted from white adipocytes, may be an independent risk factor for breast cancer.Here, we treated suberoylanilide hydroxamic acid (SAHA) on Leptin-induced cell proliferation and invasion in the estrogen-receptor-positive breast cancer cell line MCF-7 and triple-negative breast cancer cell line MDA-MB-231...
December 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27919266/arrest-at-the-diplotene-stage-of-meiotic-prophase-i-is-delayed-by-progesterone-but-is-not-required-for-primordial-follicle-formation-in-mice
#2
Sudipta Dutta, Deion M Burks, Melissa E Pepling
BACKGROUND: In mammalian females, reproductive capacity is determined by the size of the primordial follicle pool. During embryogenesis, oogonia divide mitotically but cytokinesis is incomplete so oogonia remain connected in germ cell cysts. Oogonia begin to enter meiosis at 13.5 days postcoitum in the mouse and over several days, oocytes progress through the stages of meiotic prophase I arresting in the diplotene stage. Concurrently, germ cell cysts break apart and individual oocytes become surrounded by granulosa cells forming primordial follicles...
December 5, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27913610/whole-exome-sequencing-of-thymic-neuroendocrine-tumor-with-ectopic-acth-syndrome
#3
Yanli Li, Ying Peng, Xiuli Jiang, Yulong Cheng, Weiwei Zhou, Tingwei Su, Jing Xie, Xu Zhong, Dalong Song, Luming Wu, Liwen Fan, Min Li, Jie Hong, Weiqing Wang, Guang Ning, Yanan Cao
OBJECTIVE: Thymic neuroendocrine tumor is the second-most prevalent cause of ectopic adrenocorticotropic hormone (ACTH) syndrome (EAS), which is a rare disease characterized by ectopic ACTH oversecretion from nonpituitary tumors. However, the genetic abnormalities of thymic neuroendocrine tumors with EAS remain largely unknown. We aim to elucidate the genetic abnormalities and identify the somatic mutations of potential tumor-related genes of thymic neuroendocrine tumors with EAS by whole exome sequencing...
February 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/27907454/menopause-is-associated-with-accelerated-lung-function-decline
#4
Kai Triebner, Bobette Matulonga, Ane Johannessen, Sandra Suske, Bryndís Benediktsdóttir, Pascal Demoly, Shyamali C Dharmage, Karl A Franklin, Judith Garcia Aymerich, José Antonio Gullón Blanco, Joachim Heinrich, Mathias Holm, Debbie Jarvis, Rain Jõgi, Eva Lindberg, Jesús Martínez Moratalla Rovira, Nerea Muniozguren Agirre, Isabelle Pin, Nicole Probst-Hensch, Luca Puggini, Chantal Raherison, José Luis Sánchez-Ramos, Vivi Schlünssen, Jordi Sunyer, Cecilie Svanes, Steinar Hustad, Bénédicte Leynaert, Francisco Gómez Real
RATIONALE: Menopause is associated with changes in sex hormones, which affect immunity, inflammation, and osteoporosis and may impair lung function. Lung function decline has not previously been investigated in relation to menopause. OBJECTIVES: To study whether lung function decline, assessed by forced vital capacity and forced expiratory volume in one second, is accelerated in women who undergo menopause. METHODS: The population-based longitudinal European Community Respiratory Health Survey provided serum samples, spirometry and questionnaire data about respiratory and reproductive health from three study waves (N=1438)...
December 1, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27906111/the-functional-significance-of-the-skeletal-muscle-clock-lessons-from-bmal1-knockout-models
#5
REVIEW
Stefano Schiaffino, Bert Blaauw, Kenneth A Dyar
The circadian oscillations of muscle genes are controlled either directly by the intrinsic muscle clock or by extrinsic factors, such as feeding, hormonal signals, or neural influences, which are in turn regulated by the central pacemaker, the suprachiasmatic nucleus of the hypothalamus. A unique feature of circadian rhythms in skeletal muscle is motor neuron-dependent contractile activity, which can affect the oscillation of a number of muscle genes independently of the muscle clock. The role of the intrinsic muscle clock has been investigated using different Bmal1 knockout (KO) models...
October 13, 2016: Skeletal Muscle
https://www.readbyqxmd.com/read/27895565/challenges-to-the-pair-bond-neural-and-hormonal-effects-of-separation-and-reunion-in-a-monogamous-primate
#6
Katie Hinde, Chelsea Muth, Nicole Maninger, Benjamin J Ragen, Rebecca H Larke, Michael R Jarcho, Sally P Mendoza, William A Mason, Emilio Ferrer, Simon R Cherry, Marina L Fisher-Phelps, Karen L Bales
Social monogamy at its most basic is a group structure in which two adults form a unit and share a territory. However, many socially monogamous pairs display attachment relationships known as pair bonds, in which there is a mutual preference for the partner and distress upon separation. The neural and hormonal basis of this response to separation from the adult pair mate is under-studied. In this project, we examined this response in male titi monkeys (Callicebus cupreus), a socially monogamous New World primate...
2016: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/27893717/androgen-and-ar-contribute-to-breast-cancer-development-and-metastasis-an-insight-of-mechanisms
#7
J Feng, L Li, N Zhang, J Liu, L Zhang, H Gao, G Wang, Y Li, Y Zhang, X Li, D Liu, J Lu, B Huang
The role of androgen and androgen receptor (AR) in breast carcinogenesis has long been a disputed issue. This report provides a mechanistic insight into how androgen and AR contributes to invasion and metastasis of breast cancer. We find that dihydrotestosterone (DHT) is able to induce the epithelial-to-mesenchymal transition in breast cancer cells in an AR-dependent/estrogen receptor-independent manner. This process is dependent on the demethylation activity of lysine-specific demethylase 1A (LSD1) by epigenetically regulating the target genes E-cadherin and vimentin...
November 28, 2016: Oncogene
https://www.readbyqxmd.com/read/27888528/hormone-related-migraine-headaches-and-mood-disorders-treatment-with-estrogen-stabilization
#8
Julia K Warnock, Lawrence J Cohen, Harvey Blumenthal, Jordan E Hammond
Since estrogens and the trigeminal system are inherently linked, prescribers who are treating a woman with a hormonally-related mood disorder and migraine headachesshould consider hormonal options to optimize the patient's treatment. This paper will discuss the interrelationships of estrogen, serotonin, and the trigeminal system as they relate to menstrual migraine occurrence and hormone-related mood symptoms. In addition, clinical examples are provided to facilitate the prescribers treating women during reproductive transitions in which declining estrogens are related to their suffering...
November 26, 2016: Pharmacotherapy
https://www.readbyqxmd.com/read/27885492/polymorphism-of-growth-hormone-receptor-ghr-gene-in-nilagiri-sheep
#9
Amiya Ranjan Sahu, V Jeichitra, R Rajendran, A Raja
The allelic variation in the regulatory sequence of growth hormone receptor (GHR) gene influences the growth traits of sheep. A study was carried out to find out the polymorphisms associated with exon 10 of GHR gene and its association with growth traits of Nilagiri sheep. The blood samples were collected from Nilagiri sheep (n = 103) reared at Sheep Breeding Research Station, Sandynallah, Tamil Nadu, India. DNA was isolated using the phenol-chloroform extraction procedure and eight samples having amplified product of part of exon 10 (895 bp) sequenced...
November 24, 2016: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/27882409/the-pivotal-role-of-abscisic-acid-signaling-during-transition-from-seed-maturation-to-germination
#10
REVIEW
An Yan, Zhong Chen
Seed maturation and germination are two continuous developmental processes that link two distinct generations in spermatophytes; the precise genetic control of these two processes is, therefore, crucially important for the survival of the next generation. Pieces of experimental evidence accumulated so far indicate that a concerted action of endogenous signals and environmental cues is required to govern these processes. Plant hormone abscisic acid (ABA) has been suggested to play a predominant role in directing seed maturation and maintaining seed dormancy under unfavorable environmental conditions until antagonized by gibberellins (GA) and certain environmental cues to allow the commencement of seed germination when environmental conditions are favorable; therefore, the balance of ABA and GA is a major determinant of the timing of seed germination...
November 23, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27872245/the-transcription-factor-athb5-affects-ga-mediated-plasticity-in-hypocotyl-cell-growth-during-seed-germination
#11
Petra Stamm, Alexander T Topham, Nur K Mukhtar, Matthew Jackson, Daniel Tome, Jim L Beynon, George W Bassel
The seed to seedling transition is driven exclusively by cell shape changes within the axis of the plant embryo. Using digital single cell analysis of 3D cellular growth, here we identify the presence of two spatially and temporally distinct cell expansion modules within subdomains of the growing embryo. The second growth module is within the hypocotyl and drives the final phase of the completion of germination under optimal conditions. Using network inference, we identified the transcription factor ATHB5 as a genetic factor specifically induced and localized to the hypocotyl prior to its expansion...
November 21, 2016: Plant Physiology
https://www.readbyqxmd.com/read/27866819/endocrinology-of-human-female-sexuality-mating-and-reproductive-behavior
#12
REVIEW
Natalie V Motta-Mena, David A Puts
Hormones orchestrate and coordinate human female sexual development, sexuality, and reproduction in relation to three types of phenotypic changes: life history transitions such as puberty and childbirth, responses to contextual factors such as caloric intake and stress, and cyclical patterns such as the ovulatory cycle. Here, we review the endocrinology underlying women's reproductive phenotypes, including sexual orientation and gender identity, mate preferences, competition for mates, sex drive, and maternal behavior...
November 17, 2016: Hormones and Behavior
https://www.readbyqxmd.com/read/27863470/transcript-profiling-for-early-stages-during-embryo-development-in-scots-pine
#13
Irene Merino, Malin Abrahamsson, Lieven Sterck, Blanca Craven-Bartle, Francisco Canovas, Sara von Arnold
BACKGROUND: Characterization of the expression and function of genes regulating embryo development in conifers is interesting from an evolutionary point of view. However, our knowledge about the regulation of embryo development in conifers is limited. During early embryo development in Pinus species the proembyo goes through a cleavage process, named cleavage polyembryony, giving rise to four embryos. One of these embryos develops to a dominant embryo, which will develop further into a mature, cotyledonary embryo, while the other embryos, the subordinate embryos, are degraded...
November 18, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27863406/stc2-promotes-head-and-neck-squamous-cell-carcinoma-metastasis-through-modulating-the-pi3k-akt-snail-signaling
#14
Shuwen Yang, Qinghai Ji, Bin Chang, Yan Wang, Yongxue Zhu, Duanshu Li, Caiping Huang, Yulong Wang, Guohua Sun, Ling Zhang, Qing Guan, Jun Xiang, Wenjun Wei, Zhongwu Lu, Tian Liao, Jiao Meng, Ziliang Wang, Ben Ma, Li Zhou, Yu Wang, Gong Yang
The mammalian peptide hormone stanniocalcin 2 (STC2) plays an oncogenic role in many human cancers. However, the exact function of STC2 in human head and neck squamous cell carcinoma (HNSCC) is unclear. We aimed to examine the function and clinical significance of STC2 in HNSCC. Using in vitro and in vivo assays, we show that overexpression of STC2 suppressed cell apoptosis, promoted cell proliferation, migration, invasion, and cell cycle arrest at the G1/S transition. By contrast, silencing of STC2 inhibited these activities...
November 15, 2016: Oncotarget
https://www.readbyqxmd.com/read/27852781/drosophila-dh31-neuropeptide-and-pdf-receptor-regulate-night-onset-temperature-preference
#15
Tadahiro Goda, Xin Tang, Yujiro Umezaki, Michelle L Chu, Fumika N Hamada
: Body temperature exhibits rhythmic fluctuations over a 24 h period (Refinetti and Menaker, 1992) and decreases during the night, which is associated with sleep initiation (Gilbert et al., 2004; Kräuchi, 2007a,b). However, the underlying mechanism of this temperature decrease is largely unknown. We have previously shown that Drosophila exhibit a daily temperature preference rhythm (TPR), in which their preferred temperatures increase during the daytime and then decrease at the transition from day to night (night-onset) (Kaneko et al...
November 16, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27852283/effect-of-cessation-of-gh-treatment-on-cognition-during-transition-phase-in-prader-willi-syndrome-results-of-a-2-year-crossover-gh-trial
#16
R J Kuppens, E F Mahabier, N E Bakker, E P C Siemensma, S H Donze, A C S Hokken-Koelega
BACKGROUND: Patients with Prader-Willi syndrome (PWS) have a cognitive impairment. Growth hormone (GH) treatment during childhood improves cognitive functioning, while cognition deteriorates in GH-untreated children with PWS. Cessation of GH treatment at attainment of adult height (AH) might deteriorate their GH-induced improved cognition, while continuation might benefit them. We, therefore, investigated the effects of placebo versus GH administration on cognition in young adults with PWS who were GH-treated for many years during childhood and had attained AH...
November 16, 2016: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/27837006/theoretical-approaches-to-understanding-root-vascular-patterning-a-consensus-between-recent-models
#17
Nathan Mellor, Milad Adibi, Sedeer El-Showk, Bert De Rybel, John King, Ari Pekka Mähönen, Dolf Weijers, Anthony Bishopp
The root vascular tissues provide an excellent system for studying organ patterning, as the specification of these tissues signals a transition from radial symmetry to bisymmetric patterns. The patterning process is controlled by the combined action of hormonal signaling/transport pathways, transcription factors, and miRNA that operate through a series of non-linear pathways to drive pattern formation collectively. With the discovery of multiple components and feedback loops controlling patterning, it has become increasingly difficult to understand how these interactions act in unison to determine pattern formation in multicellular tissues...
November 11, 2016: Journal of Experimental Botany
https://www.readbyqxmd.com/read/27836641/2-3-cyclic-nucleotide-3-phosphodiesterase-as-a-messenger-of-protection-of-the-mitochondrial-function-during-melatonin-treatment-in-aging
#18
Yulia Baburina, Irina Odinokova, Tamara Azarashvili, Vladimir Akatov, John J Lemasters, Olga Krestinina
The process of aging is considered to be tightly related to mitochondrial dysfunction. One of the causes of aging is an increased sensitivity to the induction of mitochondrial permeability transition pore (mPTP) opening in the inner membrane of mitochondria. Melatonin, a natural antioxidant, is a hormone produced by the pineal gland. The role of melatonin whose level decreases with aging is well understood. In the present study, we demonstrated that long-term treatment of aged rats with melatonin improved the functional state of mitochondria; thus, the Ca(2+) capacity was enhanced and mitochondrial swelling was deaccelerated in mitochondria...
November 9, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27836531/childhood-sexual-abuse-and-early-timing-of-puberty
#19
Jennie G Noll, Penelope K Trickett, Jeffrey D Long, Sonya Negriff, Elizabeth J Susman, Idan Shalev, Jacinda C Li, Frank W Putnam
PURPOSE: The purpose was to examine whether the timing of puberty, indexed by breast development and pubic hair development, was earlier for sexually abused females compared with a matched comparison group of nonabused females, controlling for key alternative confounds. METHODS: A cohort of sexually abused females and matched comparisons was followed longitudinally at mean ages 11 through 20 years. Sexually abused participants (N = 84) were referred by protective services...
November 8, 2016: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
https://www.readbyqxmd.com/read/27833804/therapeutic-role-of-human-hepatocyte-growth-factor-hgf-in-treating-hair-loss
#20
Yonghao Qi, Miao Li, Lian Xu, Zhijing Chang, Xiong Shu, Lijun Zhou
Hepatocyte growth factor (HGF) is a paracrine hormone that plays an important role in epithelial-mesenchymal transition. HGF secreted by mesenchymal cells affects many properties of epithelial cells, such as proliferation, motility, and morphology. HGF has been reported to promote follicular growth. The purpose of the present study is to investigate the therapeutic role of HGF in hair loss treatment. A recombinant vector containing the human HGF (hHGF) gene (pTARGET-hHGF) was constructed, and the expression of hHGF in vitro was quantitatively and qualitatively evaluated...
2016: PeerJ
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