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https://www.readbyqxmd.com/read/28346424/skp2-deficiency-restricts-the-progression-and-stem-cell-features-of-castration-resistant-prostate-cancer-by-destabilizing-twist
#1
D Ruan, J He, C-F Li, H-J Lee, J Liu, H-K Lin, C-H Chan
Castration-resistant prostate cancer (CRPC) remains a major clinical challenge because of the lack of effective targeted therapy for its treatment. The mechanism underlying how CRPC gains resistance toward hormone depletion and other forms of chemotherapy is poorly understood. Research on understanding the factors that drive these processes is desperately needed to generate new therapies to cure the disease. Here, we discovered a fundamental role of S-phase protein kinase 2 (Skp2) in the formation and progression of CRPC...
March 27, 2017: Oncogene
https://www.readbyqxmd.com/read/28341582/sex-differences-in-microglial-phagocytosis-in-the-neonatal-hippocampus
#2
Lars H Nelson, Spencer Warden, Kathryn M Lenz
Microglia regulate brain development through many processes, such as promoting neurogenesis, supporting cell survival, and phagocytizing progenitor, newly-born, and dying cells. Many of these same developmental processes show robust sex differences, yet very few studies have assessed sex differences in microglia function during development. Hormonally-induced sexual differentiation of the brain occurs during the perinatal period, thus we examined sex differences in microglial morphology, phagocytosis, and proliferation in the hippocampus during the early postnatal period...
March 21, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28339602/gonadotropin-releasing-hormone-kisspeptin-and-gonadal-steroids-directly-modulate-nucleobindin-2-nesfatin-1-in-murine-hypothalamic-gonadotropin-releasing-hormone-neurons-and-gonadotropes%C3%A2
#3
A Hatef, S Unniappan
Neuroendocrine regulation of metabolism and reproduction are tightly interlinked. Nesfatin-1 is an 82 amino acid metabolic peptide derived from nucleobindin-2 (NUCB2). NUCB2 mRNA and protein significantly increase in the hypothalamus of rats during puberty-to-adult transition. Administration of nesfatin-1 modulates circulating LH and testosterone in male rats. However, whether nesfatin-1 acts directly on neurons and gonadotropes remain unknown. In addition, whether reproductive hormones of the hypothalamo-pituitary gonadal axis modulate NUCB2/nesfatin-1 is unclear...
January 28, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28336768/care-of-girls-and-women-with-turner-syndrome-beyond-growth-and-hormones
#4
Caroline Culen, Diana-Allexandra Ertl, Katharina Schubert, Lisa Bartha-Doering, Gabriele Haeusler
Turner syndrome (TS), although considered a rare disease, is the most common sex chromosome abnormality in women, with an incident of 1 in 2,500 female births. TS is characterized by distinctive physical features such as short stature, ovarian dysgenesis, an increased risk for heart and renal defects as well as a specific cognitive and psychosocial phenotype. Given the complexity of the condition, patients face manifold difficulties which increase over the lifespan. Furthermore, failures during the transitional phase to adult care result in moderate health outcomes and decreased quality of life...
March 23, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28333312/establishment-maintenance-and-functional-integrity-of-the-blood-testis-barrier-in-organotypic-cultures-of-fresh-and-frozen-thawed-prepubertal-mouse-testes
#5
C Rondanino, A Maouche, L Dumont, A Oblette, N Rives
STUDY QUESTION: Can the spatio-temporal formation of an intact blood-testis barrier (BTB), which is essential for the progression of spermatogenesis, be reproduced in cultures of fresh or frozen/thawed prepubertal mouse testes? SUMMARY ANSWER: Organotypic cultures allow the establishment and maintenance of major BTB components and the formation of a functional BTB in mouse testicular tissues. WHAT IS KNOWN ALREADY: In vitro maturation of prepubertal testicular tissues is a promising approach to restore fertility in adult survivors of childhood cancer...
March 17, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28329583/dermatologic-care-of-the-transgender-patient
#6
Timothy Hermosura Almazan, Filamer D Kabigting
Literature is limited regarding the medical and cosmetic dermatologic issues pertinent to transgender patients and the reasons why 19 transgender individuals seek care from dermatologists. Clinical management of this population has historically been limited to 20 mental health providers, endocrinologists, and select surgeons with expertise in sex reassignment surgery. The impact of hormonal 21 therapy on transgender skin has been well documented in endocrinology journals, but is underrepresented in dermatology 22 literature...
October 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28325535/age-is-just-a-number-wpath-affiliated-surgeons-experiences-and-attitudes-toward-vaginoplasty-in-transgender-females-under-18-years-of-age-in-the-united-states
#7
Christine Milrod, Dan H Karasic
BACKGROUND: A rising number of female-affirmed transgender adolescents are being treated with gonadotropin-releasing hormone analogues and subsequently cross-sex hormones at early or mid-puberty, with vaginoplasty as the presumed final step in their physical transition. But, despite the minimum age of 18 years defining eligibility to undergo this irreversible procedure, anecdotal reports have shown that vaginoplasties are being performed on minors by surgeons in the United States, thereby contravening the World Professional Association for Transgender Health (WPATH) standards of care (SOC)...
March 16, 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28323912/sex-hormones-and-cardiometabolic-health-role-of-estrogen-and-estrogen-receptors
#8
Deborah Clegg, Andrea L Hevener, Kerrie L Moreau, Eugenia Morselli, Alfredo Criollo, Rachael E Van Pelt, Victoria J Vieira-Potter
With increased life expectancy, women will spend over three decades of life post-menopause. The menopausal transition increases susceptibility to metabolic diseases such as obesity, diabetes, cardiovascular disease, and cancer. Thus, it is more important than ever to develop effective hormonal treatment strategies to protect aging women. Understanding the role of estrogens, and their biological actions mediated by estrogen receptors (ERs), in the regulation of cardiometabolic health is of paramount importance to discover novel targeted therapeutics...
February 17, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323628/effects-of-bach-flower-remedies-on-menopausal-symptoms-and-sleep-pattern-a-case-report
#9
Marcele Siegler, Cristina Frange, Monica Levy Andersen, Sergio Tufik, Helena Hachul
Context • During the postmenopausal stage, women go through many remarkable changes, including physical, emotional, and hormonal. They also experience some unwanted effects, such as vasomotor symptoms, anxiety, and insomnia. The use of Bach flower remedies has been described as a supporting therapy for those symptoms. Objectives • The investigation aimed to evaluate the effects of the supplement on sleep pattern (ie, sleep perception and objective sleep) and on menopausal symptoms. Design • The research team created a case report...
March 2017: Alternative Therapies in Health and Medicine
https://www.readbyqxmd.com/read/28323145/increased-cortical-porosity-is-associated-with-daily-not-weekly-administration-of-equivalent-doses-of-teriparatide
#10
Roger Zebaze, Ryoko Takao-Kawabata, Yu Peng, Ali Ghasem Zadeh, Kyoko Hirano, Hiroshi Yamane, Aya Takakura, Yukihiro Isogai, Toshinori Ishizuya, Ego Seeman
INTRODUCTION: The pharmacokinetic profile of parathyroid hormone (PTH) determines its effects on bone resorption and formation. When administered intermittently, anabolic effects are favored in comparison with the continuous treatment. Among the intermittent treatment regimens, lower frequency of administration may have a lower effect on bone remodeling. We therefore hypothesized that weekly administration of teriparatide will produce less increase in intracortical remodeling and porosity than reported using daily treatment...
March 16, 2017: Bone
https://www.readbyqxmd.com/read/28321284/gynaecomastia-in-two-men-on-stable-antiretroviral-therapy-who-commenced-treatment-for-tuberculosis
#11
Jeremy D Kratz, Ahmad Y El-Shazly, Santos G Mambuque, Elpidio Demetria, Peter Veldkamp, Timothy S Anderson
Gynaecomastia is a common clinical presentation that varies from benign presentations in stages of human development to hormonal pathology, mainly due to hepatic dysfunction, malignancy, and adverse pharmacologic effects. We describe the development of significant bilateral gynaecomastia after starting treatment for pulmonary tuberculosis (TB) in two males with WHO stage III Human Immunodeficiency Virus (HIV) infection on stable antiretroviral regimens. Emerging reports suggest that distinct hepatic impairment in efavirenz metabolism modulates oestrogenic activity, which may be potentiated by anti-tuberculosis therapy...
December 2016: Malawi Medical Journal: the Journal of Medical Association of Malawi
https://www.readbyqxmd.com/read/28319558/effects-of-medical-interventions-on-gender-dysphoria-and-body-image-a-follow-up-study
#12
Tim C van de Grift, Els Elaut, Susanne C Cerwenka, Peggy T Cohen-Kettenis, Griet De Cuypere, Hertha Richter-Appelt, Baudewijntje P C Kreukels
OBJECTIVES: The aim of the European Network for the Investigation of Gender Incongruence is to investigate the status of all individuals who had applied for gender confirming interventions from 2007 until 2009, irrespective of whether they received treatment. The current article describes the study protocol, the effect of medical treatment on gender dysphoria and body image, and the predictive value of (pre)treatment factors on post-treatment outcomes. METHODS: Data were collected on medical interventions, transition status, gender dysphoria (Utrecht Gender Dysphoria Scale), and body image (Body Image Scale for Transsexuals)...
March 18, 2017: Psychosomatic Medicine
https://www.readbyqxmd.com/read/28317898/microrna-roles-in-signalling-during-lactation-an-insight-from-differential-expression-time-course-and-pathway-analyses-of-deep-sequence-data
#13
Duy N Do, Ran Li, Pier-Luc Dudemaine, Eveline M Ibeagha-Awemu
The study examined microRNA (miRNA) expression and regulatory patterns during an entire bovine lactation cycle. Total RNA from milk fat samples collected at the lactogenesis (LAC, day1 [D1] and D7), galactopoiesis (GAL, D30, D70, D130, D170 and D230) and involution (INV, D290 and when milk production dropped to 5 kg/day) stages from 9 cows was used for miRNA sequencing. A total of 475 known and 238 novel miRNAs were identified. Fifteen abundantly expressed miRNAs across lactation stages play regulatory roles in basic metabolic, cellular and immunological functions...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28289431/management-issues-of-congenital-adrenal-hyperplasia-during-the-transition-from-pediatric-to-adult-care
#14
REVIEW
Jin-Ho Choi, Han-Wook Yoo
Steroid 21-hydroxylase deficiency is the most prevalent form of congenital adrenal hyperplasia (CAH), accounting for approximately 95% of cases. With the advent of newborn screening and hormone replacement therapy, most children with CAH survive into adulthood. Adolescents and adults with CAH experience a number of complications, including short stature, obesity, infertility, tumor, osteoporosis, and reduced quality of life. Transition from pediatric to adult care and management of long-term complications are challenging for both patients and health-care providers...
February 2017: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/28277610/the-notch-ligand-jagged1-regulates-the-osteoblastic-lineage-by-maintaining-the-osteoprogenitor-pool
#15
Rialnat A Lawal, Xichao Zhou, Kaylind Batey, Corey M Hoffman, Mary A Georger, Freddy Radtke, Matthew J Hilton, Lianping Xing, Benjamin J Frisch, Laura M Calvi
Notch signaling is critical for osteoblastic differentiation; however, the specific contribution of individual Notch ligands is unknown. Parathyroid hormone (PTH) regulates the Notch ligand Jagged1 in osteoblastic cells. To determine if osteolineage Jagged1 contributes to bone homeostasis, selective deletion of Jagged1 in osteolineage cells was achieved through the presence of Prx1 promoter-driven Cre recombinase expression, targeting mesenchymal stem cells (MSCs) and their progeny (PJag1 mice). PJag1 mice were viable and fertile and did not exhibit any skeletal abnormalities at 2 weeks of age...
March 9, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28276155/dissecting-copper-homeostasis-in-diabetes-mellitus
#16
REVIEW
Jennifer Lowe, Rosilane Taveira-da-Silva, Elaine Hilário-Souza
Diabetes Mellitus (DM) is characterized by elevated blood glucose levels (hyperglycemia). It can occur due to impaired secretion or action of the hormone insulin, which is produced by pancreatic beta-cells to promote the entry of glucose into the cells. It is known that hyperglycemia has an important role in the production of reactive oxygen species in all types of DM and that an imbalance of transition metal as Cu and Fe plays a pivotal role in stimulating the oxidative stress. Different levels of some transition metals, as Cu, Fe, Mn, and Zn has been reported comparing diabetic animal models with the control group...
March 9, 2017: IUBMB Life
https://www.readbyqxmd.com/read/28261832/comparative-luciferase-assay-for-establishing-reliable-in-vitro-screening-system-of-juvenile-hormone-agonists
#17
Hitoshi Miyakawa, Taisen Iguchi
The cultured cell-based in vitro assay using the stringency of ligand-receptor interactions is typically useful for screening certain hormone agonists from among a very large number of molecules. However, ligands are frequently altered or modified through evolution; indeed, even in the same receptor orthologs, different ligand sensitivity profiles are considered to arise among species and/or taxa. Such ligand transition has been observed in juvenile hormone (JH), one of the most important endocrine factors in arthropods...
March 6, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/28261106/a-role-of-corazonin-receptor-in-larval-pupal-transition-and-pupariation-in-the-oriental-fruit-fly-bactrocera-dorsalis-hendel-diptera-tephritidae
#18
Qiu-Li Hou, Hong-Bo Jiang, Shun-Hua Gui, Er-Hu Chen, Dan-Dan Wei, Hui-Min Li, Jin-Jun Wang, Guy Smagghe
Corazonin (Crz) is a neuropeptide hormone, but also a neuropeptide modulator that is internally released within the CNS, and it has a widespread distribution in insects with diverse physiological functions. Here, we identified and cloned the cDNAs of Bactrocera dorsalis that encode Crz and its receptor CrzR. Mature BdCrz has 11 residues with a unique Ser(11) substitution (instead of the typical Asn) and a His in the evolutionary variable position 7. The BdCrzR cDNA encodes a putative protein of 608 amino acids with 7 putative transmembrane domains, typical for the structure of G-protein-coupled receptors...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28260837/facet-dependent-interactions-of-islet-amyloid-polypeptide-with-gold-nanoparticles-implications-for-fibril-formation-and-peptide-induced-lipid-membrane-disruption
#19
Shih-Ting Wang, Yiyang Lin, Nevena Todorova, Yingqi Xu, Manuel Mazo, Subinoy Rana, Vincent Leonardo, Nadav Amdursky, Christopher D Spicer, Bruce D Alexander, Alison A Edwards, Steve J Matthews, Irene Yarovsky, Molly M Stevens
A comprehensive understanding of the mechanisms of interaction between proteins or peptides and nanomaterials is crucial for the development of nanomaterial-based diagnostics and therapeutics. In this work, we systematically explored the interactions between citrate-capped gold nanoparticles (AuNPs) and islet amyloid polypeptide (IAPP), a 37-amino acid peptide hormone co-secreted with insulin from the pancreatic islet. We utilized diffusion-ordered spectroscopy, isothermal titration calorimetry, localized surface plasmon resonance spectroscopy, gel electrophoresis, atomic force microscopy, transmission electron microscopy (TEM), and molecular dynamics (MD) simulations to systematically elucidate the underlying mechanism of the IAPP-AuNP interactions...
February 28, 2017: Chemistry of Materials: a Publication of the American Chemical Society
https://www.readbyqxmd.com/read/28256535/rest-is-a-crucial-regulator-for-acquiring-emt-like-and-stemness-phenotypes-in-hormone-refractory-prostate-cancer
#20
Yi-Ting Chang, Tzu-Ping Lin, Mel Campbell, Chin-Chen Pan, Shu-Hui Lee, Hsin-Chen Lee, Muh-Hwa Yang, Hsing-Jien Kung, Pei-Ching Chang
Castration-resistance prostate cancer (CRPC), also known as hormone-refractory prostate cancer (HRPC), requires immediate attention since it is not only resistant to androgen ablation, chemo- and radiotherapy, but also highly metastatic. Increasing evidence suggests that enrichment of neuroendocrine (NE) cells is associated with CRPC. Here, combined RNA-seq and ChIP-seq analysis reveals that REST is involved in epithelial-mesenchymal transition (EMT) and stemness acquisition in NE differentiated prostate cancer (PCa) cells via direct transcriptional repression of Twist1 and CD44...
March 3, 2017: Scientific Reports
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