keyword
MENU ▼
Read by QxMD icon Read
search

gnrh

keyword
https://www.readbyqxmd.com/read/27931036/clinical-exome-sequencing-reveals-mkrn3-pathogenic-variants-in-familial-and-nonfamilial-idiopathic-central-precocious-puberty
#1
Nelmar Valentina Ortiz-Cabrera, Rosa Riveiro-Álvarez, Miguel Ángel López-Martínez, Pilar Pérez-Segura, Isabel Aragón-Gómez, María José Trujillo-Tiebas, Leandro Soriano-Guillén
BACKGROUND/AIMS: Idiopathic central precocious puberty (ICPP) is the premature activation of the hypothalamic-pituitary-gonadal axis in the absence of organic disease. Up to now, just gain-of-function mutations of KISS1/KISS1R and loss-of-function mutations of the maternally imprinted gene MKRN3 are the known genetic causes of ICPP. Our intention is to evaluate variants present in genes related to the pubertal onset pathway that could act as disease-causing or predisposing variants. METHODS: We studied the clinical exome of 20 patients diagnosed with ICPP using the Illumina platform...
December 9, 2016: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/27930095/multi-omics-data-integration-and-mapping-of-altered-kinases-to-pathways-reveal-gonadotropin-hormone-signaling-in-glioblastoma
#2
Savita Jayaram, Manoj Kumar Gupta, Rajesh Raju, Poonam Gautam, Ravi Sirdeshmukh
Glioblastoma multiforme (GBM) is one of the most lethal brain tumors with an inadequately understood pathophysiology. Biomarkers that guide accurate diagnosis and treatment decisions would greatly support precision medicine for GBM. Previous studies of GBM have focused on signaling pathways such as epidermal growth factor receptor (EGFR), platelet-derived growth factor receptors (PDGFRs), notch, wnt, and others, identified with single omics technology platforms (genomics, transcriptomics, or proteomics), but not with their integrated use...
December 2016: Omics: a Journal of Integrative Biology
https://www.readbyqxmd.com/read/27927844/congenital-hypogonadotropic-hypogonadism-functional-hypogonadotropism-or-constitutional-delay-of-growth-and-puberty-an-analysis-of-a-large-patient-series-from-a-single-tertiary-center
#3
Tero Varimo, Päivi J Miettinen, Johanna Känsäkoski, Taneli Raivio, Matti Hero
STUDY QUESTION: What diagnoses underlie delayed puberty (DP) and predict its outcome? SUMMARY ANSWER: A multitude of different diagnoses underlie DP, and in boys a history of cryptorchidism, small testicular size and slow growth velocity (GV) predict its clinical course. WHAT IS KNOWN ALREADY: DP is caused by a variety of underlying etiologies. Hormonal markers can be used in the differential diagnosis of DP but none of them have shown complete diagnostic accuracy...
December 6, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27922279/clinical-experience-with-an-ovarian-stimulation-protocol-for-intrauterine-insemination-adopting-a-gonadotropin-releasing-hormone-antagonist-at-low-dose
#4
Adalisa Ponzano, Enrica Concetta Colangelo, Lucia Di Biase, Federica Romani, Gian Mario Tiboni
Studies testing the effectiveness of GnRH antagonists in controlled ovarian stimulation (COS) for intrauterine insemination (IUI) have provided controversial results. The present study was undertaken to evaluate, whether the use of a half of the conventional dose of the GnRH antagonist cetrorelix can be effective in increasing the successful rate of IUI cycles. Patients started COS with human menopausal gonadotropin (hMG) on day three of the menstrual cycle. Cetrorelix was started when at least one follicle of ≥14 mm, was detected at the ultrasound scan, according to the flexible multiple daily dose protocol, and continued until the trigger day with recombinant hCG...
December 6, 2016: Gynecological Endocrinology
https://www.readbyqxmd.com/read/27921379/fibroids-that-do-not-distort-the-uterine-cavity-and-ivf-success-rates-an-observational-study-using-extensive-matching-criteria
#5
G Christopoulos, A Vlismas, R Salim, R Islam, G Trew, S Lavery
OBJECTIVE: To assess the impact of non-cavity-distorting fibroids on in vitro fertilisation (IVF) pregnancy outcomes. DESIGN: A retrospective, matched, single-centre, cohort study was performed. SETTING: The IVF unit of a tertiary, university hospital. POPULATION: We analysed all women with non-cavity-distorting uterine fibroids undergoing IVF/intracytoplasmic sperm injection (ICSI) cycles from 1 January 2011 to 1 May 2015...
December 5, 2016: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/27916574/temperature-affects-sexual-maturation-through-the-control-of-kisspeptin-kisspeptin-receptor-gnrh-and-gth-subunit-gene-expression-in-the-grass-puffer-during-the-spawning-season
#6
Md Shahjahan, Takashi Kitahashi, Hironori Ando
Water temperature is an environmental factor of primary importance that influences reproductive function in fish. To understand the molecular and physiological mechanisms underlying the regulation of reproduction by temperature, we examined changes in expression of genes encoding kisspeptin (kiss2), kisspeptin receptor (kiss2r) and three gonadotropin-releasing hormones (gnrh1, gnrh2 and gnrh3) in the brain and genes encoding gonadotropin (GTH) subunits (gpa, fshb and lhb) in the pituitary of grass puffer exposed to a low temperature (14°C), normal temperature (21°C) and high temperature (28°C) for 7 days...
December 1, 2016: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/27916070/-effect-of-luteal-phase-gonadotropin-releasing-hormone-agonist-administration-on-pregnancy-outcome-in-ivf-icsi-cycles-a-systematic-review-and-meta-analysis
#7
L P Yu, N Liu, Y Liu
Objective: To evaluate the potential efficacy and safety of gonadotropin-releasing hormone agonist(GnRH-a) administration in the luteal-phase on in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) cycles in assisted reproductive technology (ART). Methods: The relevant papers published before November 2015 were electronically searched in PubMed, EMBASE, Cochrane Library, WHO ICTRP, ClinicalTrials.gov, CNKI, CBM and WanFang database to collect randomized controlled trial (RCT) involving GnRH-a administration in the luteal-phase on IVF/ICSI cycles in ART...
November 25, 2016: Zhonghua Fu Chan Ke za Zhi
https://www.readbyqxmd.com/read/27911605/gnrh-neuron-activity-and-pituitary-response-in-estradiol-induced-vs-proestrous-luteinizing-hormone-surges-in-female-mice
#8
Marina Silveira, Laura L Burger, R Anthony DeFazio, Elizabeth R Wagenmaker, Suzanne M Moenter
During the female reproductive cycle, estradiol exerts negative and positive feedback at both the central level to alter GnRH release and at the pituitary to affect response to GnRH. Many studies of the neurobiological mechanisms underlying estradiol feedback have been done on ovariectomized, estradiol-replaced (OVX+E) mice. In this model, GnRH neuron activity depends on estradiol and time of day, increasing in estradiol-treated mice in the late afternoon coincident with a daily LH surge. Amplitude of this surge appears lower than in proestrous mice, perhaps because other ovarian factors are not replaced...
December 2, 2016: Endocrinology
https://www.readbyqxmd.com/read/27911591/type-b-insulin-resistance-masquerading-as-ovarian-hyperthecosis
#9
Rebecca J Brown, Jalaja Joseph, Elaine Cochran, Cornelia Gewert, Robert Semple, Phillip Gorden
CONTEXT: Hyperinsulinemia can lead to pathologic ovarian growth and androgen production. CASE DESCRIPTION: A 29 year old woman developed an autoantibody to the insulin receptor (Type B insulin resistance), causing extreme insulin resistance and hyperinsulinemia. Testosterone levels were elevated to the adult male range. Treatment with gonadotropin releasing hormone (GnRH) analog led to normalization of testosterone, despite persistent extreme insulin resistance...
December 2, 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27908671/effect-of-gnrh-and-hcg-on-progesterone-concentration-and-ovarian-and-luteal-blood-flow-in-diestrous-mares
#10
L F C Brito, J M Baldrighi, C A Wolf, O J Ginther
The objective of the present study was to investigate the effect of reproductive hormones (GnRH, hCG, LH and progesterone) on the regulation of corpus luteum (CL) and ovarian blood flow. Diestrous mares received a single treatment of saline, 100μg gonadorelin (GnRH), or 1500IU hCG 10days after ovulation. Plasma LH and progesterone concentrations, resistance index (RI) for ovarian artery blood-flow, and percentage of corpus luteum (CL) with color-Doppler signals of blood flow were determined immediately before treatment (hour 0) and at hours 0...
November 23, 2016: Animal Reproduction Science
https://www.readbyqxmd.com/read/27906711/polycystic-ovary-syndrome-in-adolescent-girls
#11
Natalie Hecht Baldauff, Selma Feldman Witchel
PURPOSE OF REVIEW: Polycystic ovary syndrome (PCOS) is a common heterogeneous disorder that appears to have its origins during the peripubertal years. The diagnostic conundrum is that the typical clinical features, irregular menses and acne, occur during normal female puberty. Understanding the physiologic origins and molecular basis of the dysregulated hypothalamic-pituitary-gonadal axis in PCOS is fundamental to interrupting the distinctive vicious cycle of hyperandrogenism and chronic anovulation...
November 30, 2016: Current Opinion in Endocrinology, Diabetes, and Obesity
https://www.readbyqxmd.com/read/27906555/ligand-biased-regulation-of-ptdins-3-4-5-p3-dependent-signal-transduction-in-gpcr-control-of-pituitary-hormone-release
#12
Joshua G Pemberton, John P Chang
Biased signaling describes the selective activation of signal transduction cascades by structurally-related ligands downstream of shared G protein-coupled receptors (GPCRs). Although class I phosphoinositide 3-kinases (PI3Ks) are important components of GPCR-controlled transduction networks, little is known regarding the potential for biased regulation of class I PI3K-dependent signaling. The full compliment of class I PI3K catalytic subunits (p110α, p110β, p110δ and p110γ) first appear in bony fishes and, despite being associated with distinct cellular functions, all class I PI3Ks produce the lipid second-messenger phosphatidylinositol 3,4,5-trisphosphate (PtdIns(3,4,5)P3)...
December 1, 2016: Endocrinology
https://www.readbyqxmd.com/read/27905146/temporal-changes-in-serum-luteinizing-hormone-following-ovariohysterectomy-and-gonadotropin-releasing-hormone-vaccination-in-domestic-cats
#13
H L Bateman, L M Vansandt, J Newsom, W F Swanson
Measurement of circulating luteinizing hormone (LH) concentrations in cats and temporal changes following ovariohysterectomy (OHE) or possibly GnRH vaccination may be informative for assessing their fertility, contraception or sterilization status. In this study, serum LH concentrations were measured in domestic cats (n = 6) immediately prior to and up to 120 days post-OHE. Basal LH concentrations of females previously subjected to OHE (n = 4; ~1.5 years post-OHE) were compared pre- and post-vaccination with a GnRH immunocontraceptive, and to LH concentrations in intact females...
November 30, 2016: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/27901351/biosynthesis-of-gonadotropin-releasing-hormone-gnrh-and-gnrh-receptor-gnrhr-in-hypothalamic-pituitary-unit-of-anoestrous-and-cyclic-ewes
#14
M O Ciechanowska, M Łapot, K Mateusiak, E Paruszewska, T Malewski, F Przekop
This study was performed to explain how the molecular processes governing the biosynthesis of gonadotropin-releasing hormone (GnRH) and GnRH receptor (GnRHR) in the hypothalamic-pituitary unit are reflected by luteinizing hormone (LH) secretion in sheep during anoestrous period and during luteal and follicular phases of the oestrous cycle. Using an enzyme-linked immunosorbent assay (ELISA), we analyzed the levels of GnRH and GnRHR in preoptic area (POA), anterior (AH) and ventromedial hypothalamus (VM), stalk-median eminence (SME), and GnRHR in the anterior pituitary gland (AP)...
November 30, 2016: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/27901187/interactions-between-prolactin-and-kisspeptin-to-control-reproduction
#15
Jose Donato, Renata Frazão
Prolactin is best known for its effects of stimulating mammary gland development and lactogenesis. However, prolactin is a pleiotropic hormone that is able to affect several physiological functions, including fertility. Prolactin receptors (PRLRs) are widely expressed in several tissues, including several brain regions and reproductive tract organs. Upon activation, PRLRs may exert prolactin's functions through several signaling pathways, although the recruitment of the signal transducer and activator of transcription 5 causes most of the known effects of prolactin...
November 24, 2016: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27898921/using-estrus-detection-patches-to-optimally-time-insemination-improved-pregnancy-risk-in-suckled-beef-cows-enrolled-in-a-fixed-time-artificial-insemination-program
#16
S L Hill, D M Grieger, K C Olson, J R Jaeger, C R Dahlen, G A Bridges, F Dantas, J E Larson, A M Muth-Spurlock, J K Ahola, M C Fischer, G A Perry, E L Larimore, T L Steckler, W D Whittier, J F Currin, J S Stevenson
A multilocation study examined pregnancy risk (PR) after delaying AI in suckled beef cows from 60 to 75 h when estrus had not been detected by 60 h in response to a 7-d CO-Synch + progesterone insert (CIDR) timed AI (TAI) program (d -7: CIDR insert concurrent with an injection of GnRH; d 0: PGF injection and removal of CIDR insert; and GnRH injection at TAI [60 or 75 h after CIDR removal]). A total of 1,611 suckled beef cows at 15 locations in 9 states (CO, IL, KS, MN, MS, MT, ND, SD, and VA) were enrolled...
September 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27898908/gonadotropin-releasing-hormone-increased-pregnancy-risk-in-suckled-beef-cows-not-detected-in-estrus-and-subjected-to-a-split-time-artificial-insemination-program
#17
S L Hill, D M Grieger, K C Olson, J R Jaeger, C R Dahlen, M R Crosswhite, N Negrin Pereira, S R Underdahl, B W Neville, J Ahola, M C Fischer, G E Seidel, J S Stevenson
We hypothesized that GnRH would increase pregnancy risk (PR) in a split-time AI program for cows in which estrus was not detected. A total of 1,236 suckled beef cows at 12 locations in 3 states (Colorado, Kansas, and North Dakota) were enrolled. Before applying the fixed-time AI program, BCS was assessed. Cows were treated on d -7 with a progesterone insert concurrent with 100 μg GnRH and on d 0 with 25 mg PGF plus removal of the insert. Estrus-detection patches were affixed to cows at insert removal. Estrus was defined to have occurred when an estrus-detection patch was >50% colored (activated)...
September 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27898273/serum-luteinizing-hormone-level-on-the-third-day-after-ovarian-stimulation-in-gnrh-agonist-short-protocol-is-predictive-of-outcome-in-poor-responders-but-not-in-normal-responders
#18
Hai-Yan Zhu, Shan Liu, Dian He, Wen-Hui Zhou, Tin-Chiu Li, Yuan Li
OBJECTIVES: To identify whether prognostic value of LH measurement in normal responders (NR) is different from poor responders (POR). METHODS: A retrospective, single-center study was conducted among patients who underwent ovarian stimulation with short protocol, with 300 NR and 101 POR, according to Bologna Consensus criteria. LH was measured on 3rd and 5th day after stimulation and HCG administration day. RESULTS: There was significant difference in the clinical pregnancy rate per cycle initiated among those with LH level on the third day after stimulation (a) below the 25 centile (b) between the 25 and 75 centile and (c) above the 75 centile in women with POR (7...
November 29, 2016: Gynecological Endocrinology
https://www.readbyqxmd.com/read/27895088/hormonal-alterations-in-pcos-and-its-influence-on-bone-metabolism
#19
Abhaya Krishnan, Sridhar Muthusami
According to the World Health Organization (WHO) polycystic ovary syndrome (PCOS) occurs in 4-8% of women worldwide. The prevalence of PCOS in Indian adolescents is 12.2% according to ICMR (Indian Council of Medical Research) report. National Institute of Health documented that it affects approximately 5 million women of reproductive age in the United States . Hormonal imbalance is the characteristic of many women with polycystic ovarian syndrome. The impact of various endocrine changes in PCOS women and their relevance to bone remains to be documented...
November 28, 2016: Journal of Endocrinology
https://www.readbyqxmd.com/read/27894033/the-age-related-recurrence-of-endometrioma-after-conservative-surgery
#20
Jong-Wook Seo, Dong-Yun Lee, Byung-Koo Yoon, DooSeok Choi
OBJECTIVE: As endometrioma frequently recurs after conservative surgery, long-term postoperative medical treatment for the prevention of recurrence is necessary. However, it has not been elucidated whether long-term postoperative medical treatment is crucial to all patients until menopause. Thereupon, this study was conducted to evaluate the age-related recurrence patterns after conservative surgery for endometrioma. STUDY DESIGN: A retrospective cohort study was performed on a total of 420 reproductive-aged women who underwent conservative surgery for endometrioma between January 2000 and December 2010...
November 16, 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
keyword
keyword
20765
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"