keyword
MENU ▼
Read by QxMD icon Read
search

ghrh

keyword
https://www.readbyqxmd.com/read/29340879/diethylstilbestrol-arrested-spermatogenesis-and-somatic-growth-in-the-juveniles-of-yellow-catfish-pelteobagrus-fulvidraco-a-fish-with-sexual-dimorphic-growth
#1
Zhi-Hao Liu, Qi-Liang Chen, Qiang Chen, Fang Li, Ying-Wen Li
In fish, spermatogenesis and somatic growth are mainly regulated by hypothalamic-pituitary-gonadal (HPG) and hypothalamic-pituitary-somatic (HPS) axes, respectively. Xenoestrogens have been reported to impair spermatogenesis in some fishes, and arrest somatic growth in some others, whereas, whether xenoestrogens are capable of disrupting spermatogenesis and somatic growth simultaneously in fish that exhibits sexual dimorphic growth is little known, and the underlying mechanisms remain poorly understood. In this study, male juveniles of yellow catfish (Pelteobagrus fulvidraco), which exhibits a sexual dimorphic growth that favors males, were exposed to diethylstilbestrol (DES) for 28 days...
January 16, 2018: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/29283287/hypopituitarism-3-and-12-months-after-traumatic-brain-injury-and-subarachnoid-haemorrhage
#2
Asta Dogg Jonasdottir, Petur Sigurjonsson, Ingvar Hakon Olafsson, Sigurbergur Karason, Gudmundur Sigthorsson, Helga Agusta Sigurjonsdottir
OBJECTIVE: High prevalence of hypopituitarism (HP) has been reported after traumatic brain injury (TBI) and subarachnoid haemorrhage (SAH). The aim of the study was to prospectively evaluate the prevalence and progression of HP in patients after TBI and SAH in Icelandic population. DESIGN: A 12 month prospective single-centre study. METHODS AND PROCEDURES: A total of 27 patients were included, 15 patients with TBI and 12 patients with SAH...
December 28, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/29277338/hypothalamic-abnormalities-growth-failure-due-to-defects-of-the-ghrh-receptor
#3
Manuel H Aguiar-Oliveira, Caridad Davalos, Viviane C Campos, Luiz A Oliveira Neto, Cindi G Marinho, Carla R P Oliveira
Several acquired or congenital hypothalamic abnormalities may cause growth failure (GF). We described two of these congenital abnormalities. First, a case of CHARGE syndrome, an epigenetic disorder mostly caused by heterozygous mutations in the gene encoding CHD7, a chromatin remodeling protein, causing several malformations, some life-threatening, with additional secondary hypothalamus-hypophyseal dysfunction, including GF. Second, a cohort of individuals with genetic isolated severe GH deficiency (IGHD), due to a homozygous mutation in the GH-releasing hormone (GHRH) receptor gene described in Itabaianinha County, in northeast Brazil...
December 20, 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/29273763/interactions-between-ghrh-and-gabaars-in-the-brains-of-patients-with-epilepsy-and-in-animal-models-of-epilepsy
#4
Shirong Tang, Zhong Luo, Xiaowei Qiu, Yanke Zhang, Xi Lu, Hao Huang, Zhongxiang Xu, Zucai Xu
Growth hormone releasing hormone (GHRH) has recently been shown to increase the level of γ-aminobutyric acid (GABA) and activate GABA receptors (GABARs) in the cerebral cortex. GABA is an inhibitory neurotransmitter that can inhibit seizures. Does GHRH enhance the inhibitory effect of GABA to prevent epilepsy by increasing the GABA level and activating GABARs? In this study, patients with epilepsy and C57/BL6 mice with epilepsy induced by kainic acid (KA) or pentylenetetrazol (PTZ) served as the research subjects...
December 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29217318/ghrh-plus-arginine-and-arginine-administration-evokes-the-same-ratio-of-gh-isoforms-levels-in-young-patients-with-prader-willi-syndrome
#5
Antonello E Rigamonti, Antonino Crinò, Sarah Bocchini, Alessio Convertino, Martin Bidlingmaier, Michael Haenelt, Sofia Tamini, Silvano G Cella, Graziano Grugni, Alessandro Sartorio
Human GH is present in pituitary and circulation as several isoforms, the prevalent being 22kDa- and 20kDa-GH. Recently, we have demonstrated the preservation of a normal balance in GH isoforms after GH releasing hormone (GHRH) plus arginine (ARG) administration in adult patients with Prader-Willi syndrome (PWS), one of the most common causes of syndromic obesity, often associated with GH deficiency (GHD). Aim of the present study was to measure circulating levels of 22kDa- and 20kDa-GH in young PWS patients (n=24; F/M: 10/14; genotype UPD/DEL/met+: 11/11/2; age: 10...
November 27, 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/29206714/expression-of-ghrh-r-a-potentially-targetable-biomarker-in-triple-negative-breast-cancer
#6
Mahsa Khanlari, Andrew V Schally, Norman L Block, Mehrdad Nadji
PURPOSE: Growth hormone-releasing hormone (GHRH) has been shown to modify the growth behavior of many cancers, including breast. GHRH is produced by tumor cells, acts in an autocrine/paracrine manner, and requires the presence of GHRH receptor (GHRH-R) on the tumor cells to exert its effects. GHRH activity can be effectively blocked by synthetic antagonists of its receptor and hence, the expression of GHRH-R by tumor cells could serve as a predictor of response to GHRH-R antagonist therapy...
January 2018: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/29180438/protective-effects-of-agonists-of-growth-hormone-releasing-hormone-ghrh-in-early-experimental-diabetic-retinopathy
#7
Menaka C Thounaojam, Folami L Powell, Sagar Patel, Diana R Gutsaeva, Amany Tawfik, Sylvia B Smith, Julian Nussbaum, Norman L Block, Pamela M Martin, Andrew V Schally, Manuela Bartoli
The potential therapeutic effects of agonistic analogs of growth hormone-releasing hormone (GHRH) and their mechanism of action were investigated in diabetic retinopathy (DR). Streptozotocin-induced diabetic rats (STZ-rats) were treated with 15 μg/kg GHRH agonist, MR-409, or GHRH antagonist, MIA-602. At the end of treatment, morphological and biochemical analyses assessed the effects of these compounds on retinal neurovascular injury induced by hyperglycemia. The expression levels of GHRH and its receptor (GHRH-R) measured by qPCR and Western blotting were significantly down-regulated in retinas of STZ-rats and in human diabetic retinas (postmortem) compared with their respective controls...
November 27, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29152267/acromegaly-and-cushing-s-syndrome-caused-by-a-neuroendocrine-tumor-arising-within-a-sacrococcygeal-teratoma
#8
Tarig Babiker, Efstathia Kyrodimou, Daniel M Berney, Mark Gurnell, William M Drake, Antonia Brooke
A 60-year-old man with a pre-existing stable sacrococcygeal teratoma developed acromegaly, ectopic Cushing's syndrome, and 5HIAA secretion. To our knowledge, this represents the first reported case of ACTH and serotonin secretion, and likely GHRH or GH cosecretion, from a sacrococcygeal teratoma in an adult.
November 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/29128625/lxr-activation-increases-the-expression-of-gnrh-and-%C3%AE-msh-in-the-rat-hypothalamus-in-vivo
#9
María Sol Kruse, Lucas Gabriel Suarez, Héctor Coirini
Liver X receptors (LXR) are important transcription factors involved in the regulation of carbohydrate and lipid metabolism. Recently, we described LXR receptors expression in the hypothalamus but their function in this brain area remains unknown. Here, we evaluated the function of LXR on the expression of factors produced in the hypothalamus in vitro and in vivo by Western blotting and immunocytochemistry. More precisely we studied the expression of GnRH and GHRH, αMSH and NPY in male Sprague-Dawley rats...
November 9, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/29121520/effects-of-growth-hormone-releasing-hormone-gene-targeted-ablation-on-ghrelin-induced-feeding
#10
Lucia Recinella, Sheila Leone, Claudio Ferrante, Annalisa Chiavaroli, Rugia Shohreh, Chiara Di Nisio, Michele Vacca, Giustino Orlando, Roberto Salvatori, Luigi Brunetti
Impairment of growth hormone (GH) signaling has been associated with increased feeding and adiposity. The gastric hormone ghrelin, in addition to its GH-secretagogue effects, stimulates food intake after both central and peripheral administration. In the present study we further investigated the feeding regulatory role of the ghrelin-GH axis in a mouse model of isolated GH deficiency due to targeted ablation of the GH-releasing hormone (GHRH) gene [GHRH knockout (GHRHKO)]. We evaluated the effects of intracerebroventricular ghrelin administration on feeding behavior, related hypothalamic neuropeptides and neurotransmitters, and serum ghrelin levels in mice homozygous for GHRHKO allele (-/-) and heterozygous (+/-) control animals...
November 6, 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/29108816/obestatin-stimulates-the-somatotrophic-axis-activity-in-sheep
#11
Anna Wójcik-Gładysz, Michał Szlis, Anna Misztal, Bartosz Jarosław Przybył, Jolanta Polkowska
The effects of obestatin (an anorexigenic peripheral peptide) on somatotrophic axis activity in ruminants have not yet been determined. The aim of this study was to investigate the consequence of intracerebroventricular infusions of obestatin on the activity of the somatotrophic axis in peripubertal female sheep. Animals were randomly divided into two groups: control group received intracerebroventricular infusions of the vehicle, and the obestatin group was infused with obestatin (25 µg/120 µL h(-1)). The series of four hourly infusions on three consecutive days were performed...
November 3, 2017: Brain Research
https://www.readbyqxmd.com/read/29103201/possible-predictive-markers-of-response-to-therapy-in-esophageal-squamous-cell-cancer
#12
Laszló Zoltan, Robert Farkas, Andrew V Schally, Eva Pozsgai, Andras Papp, Laura Bognár, Tamas Tornoczki, Laszlo Mangel, Szabolcs Bellyei
The aim of the present study was to investigate the relationship between the intensity of biomarker expression and the response to radiochemotherapy in patients with advanced esophageal squamous cell cancer (ESCC). Ninety-two patients with locally advanced ESCC were examined retrospectively. Pre-treatment tumor samples were stained for proteins SOUL, Hsp 16.2, Growth Hormone-Releasing Hormone Receptor (GHRH-R) and p-Akt using immunhistochemistry methods. Kaplan-Meier curves were used to show the relationship between intensity of expression of biomarkers and clinical parameters and 3-year OS...
November 4, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/29098662/deregulation-of-the-growth-hormone-insulin-like-growth-factor-1-axis-in-adults-with-cystic-fibrosis
#13
C Pascucci, R V De Biase, D Savi, S Quattrucci, A M Isidori, C Lubrano, L Gnessi, A Lenzi
PURPOSE: Patients with cystic fibrosis (CF) present with signs and symptoms that overlap with those of adult growth hormone deficiency (GHD) syndrome: loss of muscle mass, bone fragility and lower stress tolerance. In literature, the prevalence of GHD in pediatric CF patients is higher than general population, but these studies have been performed on children with growth delay. To our knowledge, there are no studies on adult patients. The aim of this paper is to evaluate GH-IGF1 axis in an adult CF population...
November 2, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/29097701/two-missense-mutations-in-kcnq1-cause-pituitary-hormone-deficiency-and-maternally-inherited-gingival-fibromatosis
#14
Johanna Tommiska, Johanna Känsäkoski, Lasse Skibsbye, Kirsi Vaaralahti, Xiaonan Liu, Emily J Lodge, Chuyi Tang, Lei Yuan, Rainer Fagerholm, Jørgen K Kanters, Päivi Lahermo, Mari Kaunisto, Riikka Keski-Filppula, Sanna Vuoristo, Kristiina Pulli, Tapani Ebeling, Leena Valanne, Eeva-Marja Sankila, Sirpa Kivirikko, Mitja Lääperi, Filippo Casoni, Paolo Giacobini, Franziska Phan-Hug, Tal Buki, Manuel Tena-Sempere, Nelly Pitteloud, Riitta Veijola, Marita Lipsanen-Nyman, Kari Kaunisto, Patrice Mollard, Cynthia L Andoniadou, Joel A Hirsch, Markku Varjosalo, Thomas Jespersen, Taneli Raivio
Familial growth hormone deficiency provides an opportunity to identify new genetic causes of short stature. Here we combine linkage analysis with whole-genome resequencing in patients with growth hormone deficiency and maternally inherited gingival fibromatosis. We report that patients from three unrelated families harbor either of two missense mutations, c.347G>T p.(Arg116Leu) or c.1106C>T p.(Pro369Leu), in KCNQ1, a gene previously implicated in the long QT interval syndrome. Kcnq1 is expressed in hypothalamic GHRH neurons and pituitary somatotropes...
November 3, 2017: Nature Communications
https://www.readbyqxmd.com/read/29078377/growth-hormone-releasing-hormone-attenuates-cardiac-hypertrophy-and-improves-heart-function-in-pressure-overload-induced-heart-failure
#15
Iacopo Gesmundo, Michele Miragoli, Pierluigi Carullo, Letizia Trovato, Veronica Larcher, Elisa Di Pasquale, Mara Brancaccio, Marta Mazzola, Tania Villanova, Matteo Sorge, Marina Taliano, Maria Pia Gallo, Giuseppe Alloatti, Claudia Penna, Joshua M Hare, Ezio Ghigo, Andrew V Schally, Gianluigi Condorelli, Riccarda Granata
It has been shown that growth hormone-releasing hormone (GHRH) reduces cardiomyocyte (CM) apoptosis, prevents ischemia/reperfusion injury, and improves cardiac function in ischemic rat hearts. However, it is still not known whether GHRH would be beneficial for life-threatening pathological conditions, like cardiac hypertrophy and heart failure (HF). Thus, we tested the myocardial therapeutic potential of GHRH stimulation in vitro and in vivo, using GHRH or its agonistic analog MR-409. We show that in vitro, GHRH(1-44)NH2 attenuates phenylephrine-induced hypertrophy in H9c2 cardiac cells, adult rat ventricular myocytes, and human induced pluripotent stem cell-derived CMs, decreasing expression of hypertrophic genes and regulating hypertrophic pathways...
November 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29063103/influence-of-insulin-on-growth-hormone-secretion-level-and-growth-hormone-signalling
#16
Han Qiu, Jin-Kui Yang, Chen Chen
Growth hormone (GH), as a vital hormone, has to experience a series of processes to fulfill its function including secretion, entering the circulation to reach target tissues (pre-receptor process), binding on the GH receptor (GHR) and triggering signaling inside cells (post-GHR process). Insulin can directly or indirectly influence part of these processes. GH secretion from pituitary somatotropes is regulated by GH-releasing hormone (GHRH) and somatostatin (SS) from hypothalamus. Insulin may exert positive or negative effects on the neurons expressing GHRH and SS and somatotropes under healthy and pathological conditions including obesity and diabetes...
October 25, 2017: Sheng Li Xue Bao: [Acta Physiologica Sinica]
https://www.readbyqxmd.com/read/29031905/fibroblast-growth-factor-21-decreases-after-liver-fat-reduction-via-growth-hormone-augmentation
#17
Laurie R Braun, Meghan N Feldpausch, Natalia Czerwonka, Martin Torriani, Steven K Grinspoon, Takara L Stanley
OBJECTIVE: Fibroblast growth factor 21 (FGF21) ameliorates steatohepatitis but is increased in humans with fatty liver, potentially due to compensatory mechanisms and/or FGF21 resistance. Further, animal models suggest that GH increases serum FGF21. Tesamorelin, a growth hormone releasing hormone agonist, reduces liver fat in HIV-infected individuals. The objectives of this study were to investigate changes in FGF21 during tesamorelin treatment, to elucide the interplay between FGF21, GH augmentation, and liver fat reduction in humans...
October 7, 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28977997/expression-of-hypothalamic-neurohormones-and-their-receptors-in-the-human-eye
#18
Sander R Dubovy, Maria P Fernandez, Jose J Echegaray, Norman L Block, Noriyuki Unoki, Roberto Perez, Irving Vidaurre, Richard K Lee, Mehrdad Nadji, Andrew V Schally
Extrapituitary roles for hypothalamic neurohormones have recently become apparent and clinically relevant, based on the use of synthetic peptide analogs for the treatment of multiple conditions including cancers, pulmonary edema and myocardial infarction. In the eye, it has been suggested that some of these hormones and their receptors may be present in the ciliary body, iris, trabecular meshwork and retina, but their physiological role has yet to be elucidated. Our study intends to comprehensively demonstrate the expression of some hypothalamic neuroendocrine hormones and their receptors within different retinal and extraretinal structures of the human eye...
September 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28977590/kisspeptin-stimulates-growth-hormone-release-by-utilizing-neuropeptide-y-pathways-and-is-dependent-on-the-presence-of-ghrelin-in-the-ewe
#19
Chad D Foradori, Brian K Whitlock, Jay A Daniel, Arthur D Zimmerman, Melaney A Jones, Casey C Read, Barbara P Steele, Jeremy T Smith, Iain J Clarke, Theodore H Elsasser, Duane H Keisler, James L Sartin
Although kisspeptin is the primary stimulator of gonadotropin-releasing hormone secretion and therefore the hypothalamic-pituitary-gonadal axis, recent findings suggest kisspeptin can also regulate additional neuroendocrine processes including release of growth hormone (GH). Here we show that central delivery of kisspeptin causes a robust rise in plasma GH in fasted but not fed sheep. Kisspeptin-induced GH secretion was similar in animals fasted for 24 hours and those fasted for 72 hours, suggesting that the factors involved in kisspeptin-induced GH secretion are responsive to loss of food availability and not the result of severe negative energy balance...
October 1, 2017: Endocrinology
https://www.readbyqxmd.com/read/28974369/characterization-and-distribution-of-ghrh-pacap-trh-sst-and-igf1-mrnas-in-the-green-iguana
#20
José Ávila-Mendoza, Ernesto Pérez-Rueda, Valeria Urban-Sosa, Martha Carranza, Carlos G Martínez-Moreno, Maricela Luna, Carlos Arámburo
The somatotropic axis (SA) regulates numerous aspects of vertebrate physiology such as development, growth, and metabolism and has influence on several tissues including neural, immune, reproductive and gastric tract. Growth hormone (GH) is a key component of SA, it is synthesized and released mainly by pituitary somatotrophs, although now it is known that virtually all tissues can express GH, which, in addition to its well-described endocrine roles, also has autocrine/paracrine/intracrine actions. In the pituitary, GH expression is regulated by several hypothalamic neuropeptides including GHRH, PACAP, TRH and SST...
January 1, 2018: General and Comparative Endocrinology
keyword
keyword
90777
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"