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Human Chorionic Gonadotropin

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https://www.readbyqxmd.com/read/28220820/testicular-responses-to-hcg-stimulation-at-varying-doses-in-men-with-spinal-cord-injury
#1
W A Bauman, M F La Fountaine, C M Cirnigliaro, S C Kirshblum, A M Spungen
STUDY DESIGN: Prospective. OBJECTIVES: To test whether provocative stimulation of the testes identifies men with chronic spinal cord injury (SCI), a population in which serum testosterone concentrations are often depressed, possibly due to gonadal dysfunction. To accomplish this objective, conventional and lower than the conventional doses of human chorionic gonadotropin (hCG) were administered. METHODS: Thirty men with chronic SCI (duration of injury >1 year; 18 and 65 years old; 16 eugonadal (>12...
February 21, 2017: Spinal Cord
https://www.readbyqxmd.com/read/28217676/pretreatment-serum-human-chorionic-gonadotropin-cutoff-value-for-medical-treatment-success-with-single-dose-and-multi-dose-regimen-of-methotrexate-in-tubal-ectopic-pregnancy
#2
Junhwan Kim, Young Mi Jung, Da Yong Lee, Byung Chul Jee
OBJECTIVE: To investigate individual pretreatment serum human chorionic gonadotropin (hCG) cutoff value for medical treatment success with single-dose and multi-dose regimen of methotrexate in tubal ectopic pregnancy. METHODS: Eighty-five women who received methotrexate for the treatment of tubal ectopic pregnancy during 2003 to 2015 were selected. Fifty-three women received a single-dose regimen and 32 women received a multi-dose regimen. Medical treatment failure was defined as necessity of surgical treatment...
January 2017: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/28215683/effects-of-hormonal-stimulation-on-the-concentration-and-quality-of-excreted-spermatozoa-in-the-critically-endangered-panamanian-golden-frog-atelopus-zeteki
#3
Gina Della Togna, Vance L Trudeau, Brian Gratwicke, Matthew Evans, Lauren Augustine, Han Chia, Edward J Bronikowski, James B Murphy, Pierre Comizzoli
Knowledge of basic gamete biology is critical to better protect and propagate endangered amphibian species and also to develop reproductive technologies combined with germplasm cryopreservation. The objectives of the study were to test different hormonal stimulations and then characterize the quantity and quality of Panamanian golden frog (Atelopus zeteki) spermatozoa. Following intraperitoneal injection of the gonadotropin-releasing hormone agonist (des-Gly(10), D-Ala(6), Pro-NHEt(9-)-GnRH 1, 2 or 4 μg/g of body weight), human chorionic gonadotropin (hCG; 5 or 10 IU/gbw), or Amphiplex™ (0...
March 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28193084/value-of-endometrial-echopattern-at-hcg-administration-day-in-predicting-ivf-outcome
#4
Firoozeh Ahmadi, Farnaz Akhbari, Mina Zamani, Fariba Ramezanali, Rezvaneh Cheraghi
BACKGROUND: Assisted reproductive  treatment  (ART)  cycle  is an  expensive  procedure with low implantation and pregnancy rate; therefore, it is necessary to evaluate the predictors of success in these patients. OBJECTIVE: The relationship between endometrial echopattern and pregnancy rate was evaluated. METHODS: The endometrial  echopattern  was  analyzed  prospectively  on  the  day  of  human chorionic  gonadotropin  (HCG) administration  in  280  in  vitro  fertilization/intracytoplasmic  sperm  injection (IVF/ICSI) cycles with 8-14 mm endometrial thickness at Royan institute in 2013-2014...
February 2017: Archives of Iranian Medicine
https://www.readbyqxmd.com/read/28190892/slit2-robo4-signaling-potential-role-of-a-vegf-antagonist-pathway-to-regulate-luteal-permeability
#5
I Bekes, V Haunerdinger, R Sauter, I Holzheu, W Janni, A Wöckel, C Wulff
Introduction The corpus luteum (CL) is dependent on luteal vascular permeability, which is controlled by human chorionic gonadotropin (hCG) via vascular endothelial growth factor (VEGF). In this study we investigated the role of a potential VEGF antagonist pathway - Slit2/Robo4 - and its influence on endothelial cell adhesion. Materials and Methods Luteinized granulosa cells (LGCs) were stimulated with hCG in the absence or presence of a VEGF inhibitor. The expression of VEGF and Slit2 were measured. Human umbilical vein endothelial cells (HUVECs) were stimulated with Slit2 or VEGF, and gene expressions of cadherin 5 (CDH5) and claudin 5 (CLDN5) were measured...
January 2017: Geburtshilfe und Frauenheilkunde
https://www.readbyqxmd.com/read/28189070/paper-based-microfluidic-devices-for-electrochemical-immunofiltration-analysis-of-human-chorionic-gonadotropin
#6
Liangli Cao, Cheng Fang, Ruosheng Zeng, Xiongjie Zhao, Yuren Jiang, Zhencheng Chen
An electrochemical immunofiltration analysis was introduced into microfluidic paper-based analytical devices (μPADs) for the first time, which was based on photolithography and screen-printing technology. The hydrophilic test zones of the aldehyde-functionalized screen-printed electrodes (SPEs) were biofunctionalized with capture antibodies (Ab1). A sensitive immune detection method was developed by using primary signal antibody functionalized gold nanoparticles (GNPs/Ab2) and alkaline phosphatase conjugated secondary antibody (ALP-IgG)...
February 2, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28185934/corticosteroids-deeply-depress-the-in-vitro-steroidogenic-capacity-of-eurasian-perch-ovary-at-the-end-of-the-reproductive-cycle
#7
S N M Mandiki, S Milla, S Nkogo Robles, P Kestemont
Corticosteroids play positive or negative role in the reproductive mechanisms of many fish species but the physiological contexts relating to such biphasic actions are not well defined. In the present study we investigated to what extent corticosteroids (cortisol-Co, 11-deoxycorticosterone-DOC) hormones may interfere with the steroidogenic capacity of Eurasian perch follicles, and we tested whether the negative interference of corticosteroids may be mitigated by potential stimulating endocrine factors, namely insulin-like growth factor-1 (IGF), human chorionic gonadotropin (HCG) or thyroid hormones (Triidothyronine-T3, thyroxine-T4)...
February 6, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28181555/determination-of-biological-activity-of-gonadotropins-hcg-and-fsh-by-f%C3%A3-rster-resonance-energy-transfer-based-biosensors
#8
Olga Mazina, Anni Allikalt, Juha S Tapanainen, Andres Salumets, Ago Rinken
Determination of biological activity of gonadotropin hormones is essential in reproductive medicine and pharmaceutical manufacturing of the hormonal preparations. The aim of the study was to adopt a G-protein coupled receptor (GPCR)-mediated signal transduction pathway based assay for quantification of biological activity of gonadotropins. We focussed on studying human chorionic gonadotropin (hCG) and follicle-stimulating hormone (FSH), as these hormones are widely used in clinical practice. Receptor-specific changes in cellular cyclic adenosine monophosphate (cAMP, second messenger in GPCR signalling) were monitored by a Förster resonance energy transfer (FRET) biosensor protein (T)Epac(VV) in living cells upon activation of the relevant gonadotropin receptor...
February 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28170286/effects-of-alcohol-on-mitochondrial-functions-of-cumulus-cells-in-mice
#9
Wanlu Xu, Lihui Huo, Jingjing Li, Chunli Xu, Shuang Wang, Yanhong Yang, Chuang Liu, Xiaomin Zheng, Xiuliang Feng, Xingrong Yan
Alcohol is an important compound used in food, agriculture, and medicine. In this study, we investigated the effect of alcohol on oocyte quality in mice by exposing animals for different duration times during an estrous cycle. Cumulus-oocyte complexes were collected from mice after pregnant mare serum gonadotropin- and human chorionic gonadotropin-induced superovulation. Ovulation number, E2 level in serum, and parthenogenetic embryo development in vitro were evaluated. Mitochondrial gene expression, mitochondrial membrane potential, and reactive oxygen species (ROS) levels in the cumulus were also assessed...
February 7, 2017: Cellular Reprogramming
https://www.readbyqxmd.com/read/28164575/comparison-of-architect-i2000sr-and-cobas-e601-systems-for-determining-serum-human-chorionic-gonadotropin-beta
#10
Xiaoyong Guan, Yifan Sun, Hongyu Zhang, Ka Liang, Kang Long, Jin Li, Shifu Tang, Chunming Liu
BACKGROUND: Human chorionic gonadotropin-beta (β-hCG) is an important index used to monitor embryonic development following embryo transfer. Architect i2000sr and Cobas e601 are widely used automated immunoassay systems used to measure serum β-hCG concentrations; however, the correlations between serum β-hCG levels measured with these two immunoassays and the accuracy of the immunoassays have not been fully evaluated. METHODS: Serum β-hCG levels were measured in 133 serum samples using the Architect i2000sr and Cobas e601 automated immunoassay systems...
September 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28160506/evaluation-of-the-effect-of-indomethacin-and-piroxicam-administration-before-embryo-transfer-on-pregnancy-rate
#11
Serkan Kumbasar, Özer Gül, Aytek Şık
AIM: The aim of this study was to evaluate the effect of non-steroidal anti-inflammatory drug (NSAID) administration before embryo transfer (ET) on pregnancy rates in women undergoing in vitro fertilization/intracytoplasmic sperm injection ET. METHODS: Our study included 255 patients diagnosed with primary or secondary infertility caused by a male or tubal-related factor, endometriosis or unexplained factors. The patients were divided randomly into three groups...
February 4, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28157643/ratios-of-biochemical-markers-in-peritoneal-fluid-to-those-in-venous-blood-for-the-diagnosis-of-ruptured-tubal-pregnancy-a-prospective-study
#12
Xiao-Lu Zhu, Zhuo-Wei Xue, Yan-Li Xu, Juan Wang, Zhi-Hong Ai, Yin-Cheng Teng
OBJECTIVES: Ectopic pregnancies are among the leading causes of maternal morbidity and mortality in both developed and emerging nations, but tests for early, accurate, and convenient detection are lacking. STUDY DESIGN: Between January 2013 and February 2015, 504 women with tubal pregnancy were prospectively recruited, and their clinical characteristics were recorded. Samples of peritoneal fluid were collected by culdocentesis, and venous blood was drawn from the antecubital vein...
January 18, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28154873/a-low-cost-smartphone-based-platform-for-highly-sensitive-point-of-care-testing-with-persistent-luminescent-phosphors
#13
Andrew S Paterson, Balakrishnan Raja, Vinay Mandadi, Blane Townsend, Miles Lee, Alex Buell, Binh Vu, Jakoah Brgoch, Richard C Willson
Through their computational power and connectivity, smartphones are poised to rapidly expand telemedicine and transform healthcare by enabling better personal health monitoring and rapid diagnostics. Recently, a variety of platforms have been developed to enable smartphone-based point-of-care testing using imaging-based readout with the smartphone camera as the detector. Fluorescent reporters have been shown to improve the sensitivity of assays over colorimetric labels, but fluorescence readout necessitates incorporating optical hardware into the detection system, adding to the cost and complexity of the device...
February 3, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28152966/analysis-of-the-results-of-implementation-of-a-pregnancy-screening-policy-at-a-comprehensive-cancer-center
#14
David Cleveland, Alma Yvette DeJesus, Lee Cheng, Elizabeth Ann Wagar, Charles F Levenback, Maria Alma Rodriguez
: 256 Background: Institutional implementation of a standard pregnancy screening policy for women will enhance the safe and timely delivery of treatment throughout the care continuum. In 2012, we developed and implemented an initial policy on pregnancy screening test (PST). The policy indicated that all providers should fully discuss with their female patients of child bearing potential regarding the potential risks of cancer treatment on fertility and the adverse effects on the fetus...
March 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28149157/effects-of-human-chorionic-gonadotropin-combined-with-clomiphene-on-serum-e2-fsh-lh-and-prl-levels-in-patients-with-polycystic-ovarian-syndrome
#15
Huang Yonggang, Lu Xiaosheng, Huang Zhaoxia, Chen Yilu, Lv Jiqiang, Zhang Huina
OBJECTIVE: Effects of human chorionic gonadotropin combined with clomiphene on serum E2, FSH, LH and PRL levels in patients with polycystic ovarian syndrome were analyzed. METHODS: 90 patients with polycystic ovarian syndrome treated from January 2015 to March 2016 were randomly and evenly divided into control group and observation group. Patients in the control group were only treated with clomiphene. On the basis of the treatment in control group, human chorionic gonadotropin was added in the treatment of observation group...
February 2017: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/28139950/can-early-%C3%AE-human-chorionic-gonadotropin-predict-birth-of-singletons-and-twins-after-in-vitro-fertilization
#16
Ana Póvoa, Milton Severo, Pedro Xavier, Alexandra Matias, Isaac Blickstein
OBJECTIVE: To assess the predictive value for clinical pregnancy outcome of β-hCG level at 13 days after embryo transfer. METHODS: Retrospective study of IVF clinical pregnancies diagnosed at 6 weeks. We calculated the value of β-hCG level at 13 days after embryo transfer to predict live births. RESULTS: We analyzed 177 IVF cycles between 2009 and 2014 (50 singleton births, 50 twin births, 27 sets with a vanishing twin, 43 first trimester singleton pregnancy loss and 7 first trimester total twin pregnancy loss)...
January 31, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28134999/pathogenesis-of-hyperthyroidism
#17
Ishita Singh, Jerome M Hershman
Hyperthyroidism is a form of thyrotoxicosis in which there is excess thyroid hormone synthesis and secretion. Multiple etiologies can lead to a common clinical state of "thyrotoxicosis," which is a consequence of the high thyroid hormone levels and their action on different tissues of the body. The most common cause of thyrotoxicosis is Graves' disease, an autoimmune disorder in which stimulating thyrotropin receptor antibodies bind to thyroid stimulating hormone (TSH) receptors on thyroid cells and cause overproduction of thyroid hormones...
December 6, 2016: Comprehensive Physiology
https://www.readbyqxmd.com/read/28133896/efficacy-comparison-of-transcatheter-arterial-embolization-with-gelatin-sponge-and-polyvinyl-alcohol-particles-for-the-management-of-cesarean-scar-pregnancy-and-follow-up-study
#18
Yan Ma, Chao Yang, Xiaonan Shao
AIM: The aim of this study was to compare the therapeutic efficacy of transcatheter arterial embolization (TAE) with gelatin sponge (GS) and polyvinyl alcohol (PVA) particles for cesarean scar pregnancy (CSP). METHODS: A total of 35 patients with CSP, who were classified into either the GS group (n = 22) or the PVA group (n = 13), underwent TAE and postoperative ultrasound-guided curettage. Their hospital stay, first-scheme success rate, intra-curettage blood loss, serum β-human chorionic gonadotropin (hCG) level, and other indicators were simultaneously recorded...
January 30, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28127836/clinical-characteristics-of-persistent-ectopic-pregnancy-after-salpingostomy-and-influence-on-ongoing-pregnancy
#19
Yongli Zhang, Jinhong Chen, Wen Lu, Bilan Li, Guiqiang Du, Xiaoping Wan
AIM: The aim of this study was to assay the clinical characteristics of persistent ectopic pregnancy (PEP) and its influence on ongoing pregnancy. METHODS: We retrospectively reviewed 2498 patients who received salpingostomies as primary management for ectopic pregnancies from January 2004 to December 2009, using medical records and telephone inquiries. Clinical characteristics of the 52 patients (2.08%) who were diagnosed with PEP after salpingostomy were compared with those who received satisfactory treatment...
January 26, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28127150/ruptured-ectopic-pregnancy-with-a-negative-urine-pregnancy-test
#20
Mallory Hughes, Andrew Lupo, Adrianne Browning
Ectopic pregnancy is commonly seen as a differential diagnosis of first-trimester vaginal bleeding. Often the diagnosis is made based on a combination of exam findings, transvaginal ultrasound, and a positive pregnancy test. Our case describes a patient with a history of ectopic pregnancy treated with methotrexate and serial human chorionic gonadotropin measurements that were decreasing appropriately. At the time of evaluation, her urine pregnancy test was negative; however, she was confirmed to have a ruptured tubal ectopic pregnancy...
January 2017: Proceedings of the Baylor University Medical Center
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