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https://www.readbyqxmd.com/read/29157487/contr%C3%A3-le-de-l%C3%A2-axe-gonadotrope-nouveaux-aspects-physiologiques-et-th%C3%A3-rapeutiques-control-of-the-gonadotrope-axis-new-physiologic-and-therapeutic-aspects
#1
L Maione, S Christin-Maître, P Chanson, J Young
The endocrine and exocrine functions of the gonads are controlled by the gonadotrope axis, whose master regulator is the hypothalamic decapeptide GnRH. The Kisspeptin/Neurokinin B (Kp/NkB) neuronendocrine system is the main physiologic regulator of GnRH neurons. The Kp/NkB system is currently considered the key mediator for the hypothalamic negative feedback exerted by sex steroids and prolactin, as well as by various metabolic signals. Intrinsic alterations or regulatory abnormalities of Kp/NkB system lead to various gonadotrope axis puberty and fertility dysfunctions...
October 2017: Annales D'endocrinologie
https://www.readbyqxmd.com/read/29155450/risk-of-ovarian-function-recovery-should-be-considered-when-switching-from-treatment-with-adjuvant-tamoxifen-to-aromatase-inhibitor-therapy-in-women-with-chemotherapy-induced-amenorrhea
#2
https://www.readbyqxmd.com/read/29155136/adipose-tissue-and-reproductive-health
#3
REVIEW
Hannah Mathew, V Daniel Castracane, Christos Mantzoros
The understanding of adipose tissue role has evolved from that of a depot energy storage organ to a dynamic endocrine organ. While genetics, sexual phenotype and sex steroids can impact the mass and distribution of adipose tissue, there is a counter-influence of white adipocytes on reproduction. This primarily occurs via the secretion of adipokines, the most studied of which- leptin and adiponectin- are highlighted in this article. Leptin, the "satiety hormone" primarily acts on the hypothalamus via pro-opiomelanocortin (POMC), neuropeptide Y (NPY), and agouti-related peptide (AgRP) NPY neurons to translate acute changes in nutrition and energy expenditure, as well as chronic adipose accumulation into changes in appetite and potentially mediate insulin resistance via shared pathway and notably impacting reproductive health via influence on GnRH secreting neurons...
November 16, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29155113/small-cell-glioblastoma-of-the-sella-turcica-region-a-case-report-and-review-of-the-literature
#4
Shuanglin Deng, Linlin Liu, Danhua Wang, Dan Tong, Gang Zhao
BACKGROUND: Glioblastomas in the sellar region are very rare; in most cases, the tumor originates from the optic nerve/optic chiasm. Only 4 cases of sellar glioblastoma with a non-optic origin have been reported. We present such a case with detailed clinical, imaging and histopathological information. A review of similar published cases is also presented. CASE PRESENTATION: A 42-year-old woman presented with endocrinological abnormalities including, amenorrhea and lactation, symptoms of diabetes insipidus and signs of elevated ICP...
November 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29152440/risperidone-induced-amenorrhea-in-floridly-psychotic-female
#5
Shanila Shagufta, Faiza Farooq, Ali M Khan, Kamil Dar, Abdul Mohit
Despite the high prevalence of hyperprolactinemia in patients receiving antipsychotic medications, its side effects are often neglected. In patients receiving risperidone, the incidence of menstrual abnormalities is relatively small. Our patient was a 44-year-old, Haitian female whose total course of hospitalization was nine months, during most of which she remained floridly psychotic with low cognitive function with waxing and waning symptoms. She developed hyperprolactinemia and amenorrhea on risperidone...
September 13, 2017: Curēus
https://www.readbyqxmd.com/read/29144824/17%C3%AE-hydroxylase-deficiency-is-an-underdiagnosed-disease-high-frequency-of-misdiagnoses-in-a-large-cohort-of-brazilian-patients
#6
Rafaela Fontenele, Marivânia Costa-Santos, Claudio E Kater
OBJECTIVE: 17α-Hydroxylase deficiency (P450c17D) is characterized by hypogonadism and mineralocorticoid hypertension. We aimed to estimate the relative incidence and spectrum of preliminary misdiagnoses in Brazilian P450c17D patients. DESIGN: Cross-sectional study. METHODS: We reviewed, updated, and analyzed data of 40 P450c17D patients (21 XY, 19 XX). RESULTS: Complete data were unavailable for two patients. Seven patients were relatives of an index case...
November 16, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/29142910/induction-and-maintenance-of-amenorrhea-in-transmasculine-and-nonbinary-adolescents
#7
REVIEW
Jeremi M Carswell, Stephanie A Roberts
The treatment of persistent uterine bleeding in those patients who identify as transmasculine or nonbinary is often straightforward, but can be difficult in a subset of patients. This article reviews the physiology of the normal menstrual cycle and the hormonal influences on the endometrium, and then explores options for the treatment of persistent bleeding for people both already on testosterone and for those who are either not ready for or who do not desire testosterone.
2017: Transgender Health
https://www.readbyqxmd.com/read/29131679/knowledge-and-opinions-of-postpartum-mothers-about-the-lactational-amenorrhea-method-the-turkish-experience
#8
Sevgi Özsoy, Hilmiye Aksu, Nevin Akdolun Balkaya, Gözde Demirsoy Horta
OBJECTIVE: This study was performed to investigate mothers' opinions and knowledge about the contraceptive feature of breastfeeding. BACKGROUND: Breastfeeding is quite beneficial in terms of mother, baby, and public health. Although it has long been known to have a contraceptive effect and although it is common in many countries, women usually do not use it as a contraceptive method. MATERIALS AND METHODS: This is a descriptive study and included 400 mothers in their early postpartum period...
November 13, 2017: Breastfeeding Medicine: the Official Journal of the Academy of Breastfeeding Medicine
https://www.readbyqxmd.com/read/29118296/mismatch-between-fetal-sexing-and-birth-phenotype-a%C3%A2-case-of-complete-androgen-insensitivity-syndrome
#9
Keisuke Yoshii, Yasuhiro Naiki, Yumiko Terada, Maki Fukami, Reiko Horikawa
With advancing maternal age, the number of prenatal genetic tests is increasing in many countries. Prenatal genetic tests, such as amniocentesis, chorionic villus sampling and non-invasive prenatal testing, can disclose fetal chromosomal sex, although these tests were originally designed to prenatally diagnose chromosomal aneuploidies, such as trisomy 21, 18 and 13. Complete androgen insensitivity syndrome (CAIS) is an X-linked recessive disorder caused by an androgen receptor dysfunction leading to hormone resistance...
November 9, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/29117764/counseling-and-in-advance-provision-of-levonorgestrel-emergency-contraceptive-pills-decrease-the-rate-of-unplanned-pregnancy-during-breastfeeding-a-randomized-controlled-trial
#10
Omar M Shaaban, Ahmed M Abbas, Hanaa R Mahmoud, Entsar M Yones, Shaimaa G Hassen, Mahmoud S Zakherah
OBJECTIVE: To evaluate the effect of counseling and in-advance provision of levonorgestrel emergency contraceptive pills (LNG-ECPs) during postpartum counseling on the incidence of occurrence of unplanned pregnancy during breastfeeding. MATERIALS AND METHODS: The current study is an open-label, parallel, randomized controlled trial carried out in a university hospital in Egypt. All women who delivered and planning to birth-space and breastfeed for at least 1 year were approached for participation during postpartum hospital stay...
November 8, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29117655/genetic-etiology-of-primary-premature-ovarian-insufficiency
#11
Maja Franić-Ivanišević, Damir Franić, Miomira Ivović, Milina Tančić-Gajić, Ljiljana Marina, Marija Barac, Svetlana Vujović
Primary premature ovarian insufficiency (PPOI) is characterized by hypergonadotropic amenorrhea and hypoestrogenism in women under 40 years of age. PPOI incidence is 1:10,000 in women aged 18-25, 1:1000 in women aged 25-30 and 1:100 in women aged 35-40. In 10%-28% of cases, PPOI causes primary and in 4%-18% secondary amenorrhea. The process is a consequence of accelerated oocyte atresia, diminished number of germinated cells, and central nervous system aging. Specific genes are responsible for the control of oocyte number undergoing the ovulation process and the time to cessation of the reproductive function...
December 2016: Acta Clinica Croatica
https://www.readbyqxmd.com/read/29108899/kallmann-syndrome-phenotype-and-genotype-of-hypogonadotropic-hypogonadism
#12
M I Stamou, N A Georgopoulos
Isolated Gonadotropin-Releasing Hormone (GnRH) Deficiency (IGD) IGD is a genetically and clinically heterogeneous disorder. Mutations in many different genes are able to explain ~40% of the causes of IGD, with the rest of cases remaining genetically uncharacterized. While most mutations are inherited in X-linked, autosomal dominant, or autosomal recessive pattern, several IGD genes are shown to interact with each other in an oligogenic manner. In addition, while the genes involved in the pathogenesis of IGD act on either neurodevelopmental or neuroendocrine pathways, a subset of genes are involved in both pathways, acting as "overlap genes"...
November 3, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29107598/bone-metabolism-in-anorexia-nervosa-and-hypothalamic-amenorrhea
#13
Sharon H Chou, Christos Mantzoros
Anorexia nervosa (AN) and hypothalamic amenorrhea (HA) are states of chronic energy deprivation associated with severely compromised bone health. Poor bone accrual during adolescence followed by increased bone loss results in lifelong low bone density, degraded bone architecture, and higher risk of fractures, despite recovery from AN/HA. Amenorrhea is only one of several compensatory responses to the negative energy balance. Other hypothalamic-pituitary hormones are affected and contribute to bone deficits, including activation of hypothalamic-pituitary-adrenal axis and growth hormone resistance...
October 28, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29101609/assessment-of-ovarian-function-after-chemotherapy-in-women-with-early-and-locally-advanced-breast-cancer-from-serbia
#14
Emina Malisic, Snezana Susnjar, Jelena Milovanovic, Natasa Todorovic-Rakovic, Vesna Kesic
PURPOSE: Among harmful effects of chemotherapy is the reduction of ovarian function. The aim was to determine the serum levels of FSH, LH, estradiol and AMH after chemotherapy followed by endocrine therapy in breast cancer patients. METHODS: The study included 40 premenopausal hormone receptor-positive breast cancer patients aged 33-50 years. Anthracycline-based chemotherapy received 14/40 while anthracycline-taxane combination received 26/40 of patients, followed by tamoxifen (30/40) or tamoxifen plus goserelin (10/40)...
November 3, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29091146/how-polymorphic-markers-contribute-to-genetic-diseases-in-different-populations-the-study-of-inhibin-a-for-premature-ovarian-insufficiency
#15
Denise Maria Christofolini, Emerson Barchi Cordts, Fernando Santos-Pinheiro, Erika Azuma Kayaki, Mayla Cristina Fernandes Dornas, Monise de Castro Santos, Bianca Bianco, Caio Parente Barbosa
OBJECTIVE: To verify the incidence of the G679A mutation in exon 2 of the gene inhibin alpha (INHA), in women with secondary amenorrhea and diagnosis of premature ovarian insufficiency, and in controls. METHODS: A 5mL sample of peripheral blood was collected from all study participants in an EDTA tube and was used for DNA extraction. For the patient group, 5mL of blood were also collected in a tube containing heparin for karyotype, and 5mL were collected in a dry tube for follicle stimulant hormone dosage...
July 2017: Einstein
https://www.readbyqxmd.com/read/29083360/management-and-treatment-of-femoral-neck-stress-fractures-in-recreational-runners-a-report-of-four-cases-and-review-of-the-literature
#16
Carlo Biz, Antonio Berizzi, Alberto Crimì, Chiara Marcato, Giulia Trovarelli, Pietro Ruggieri
Femoral neck stress fractures (FNSFs) in healthy young subjects are uncommon and most prevalent among long-distance runners and military recruits. Women seem to be at higher risk of developing stress fractures because of possible eating disorders followed by amenorrhea and osteoporosis. This case report describes four young and middle-aged, active female recreational runners who developed stress fractures of the femoral neck. In three of them, with a clinical history of persistent pain in the groin region, which worsened during training, early diagnosis by MRI was considered essential in detecting the fractures...
October 18, 2017: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/29080885/roles-of-mifepristone-on-the-regulation-of-cytotoxic-lymphocytes-and-regulatory-t-cells
#17
Linxiang Liu, Feng Zhou, Jiale Qin, Zhida Qian, Lili Huang
OBJECTIVE: To investigate the immunologic function of mifepristone, which acts as a contraceptive drug at the level of the decidua. SETTING: In our hospital, 60 women (less than 63 days of amenorrhea) volunteered to terminate their pregnancies by the uterine suction evacuation method. Immunohistochemically, the transcription factor forkhead box P3 and granzyme B staining were performed to identify regulatory T cells and cytotoxic lymphocytes (CLs) in all operational subjects...
October 28, 2017: Gynecologic and Obstetric Investigation
https://www.readbyqxmd.com/read/29073797/features-of-polycystic-ovary-syndrome-pcos-in-women-with-functional-hypothalamic-amenorrhea-fha-may-be-reversible-with-recovery-of-menstrual-function
#18
Enrico Carmina, Franca Fruzzetti, Roger A Lobo
OBJECTIVE: Since features of polycystic ovary syndrome (PCOS) have been found to be prevalent in women with functional hypothalamic amenorrhea (FHA), we wished to determine what happens to these features after recovery of menstrual function in FHA Design: Prospective cohort study. Twenty-eight women with FHA and 30 age-matched ovulatory controls were studied. METHODS: Twenty-eight women with FHA and 30 age-matched ovulatory controls were studied. We measured serum estradiol, LH, FSH, testosterone, DHEAS, anti-Mullerian hormone (AMH), body mass index, and ovarian morphology on transvaginal ultrasound...
October 27, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29071833/-amenorrhea-in-athletic-adolescents-the-tip-of-the-iceberg
#19
Martine Jacot-Guillarmod, Cécile Diserens
The female athletic triad refers to the interaction between menstrual function, energy availability and bone density. When an imbalance appears between energy input and output, the global health of the athletic teenager is at risk of somatic and/or psychological complications as defined by the RED-S (Relative Energy Deficiency in Sports). In athletic girls menstrual disorder should be seen as an alert. It may be difficult to distinguish it from menstrual irregularity due to immature hypothalamic-hyphophysic-gonadal axis, which can be physiological at that age...
October 25, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/29069951/familial-swyer-syndrome-a-rare-genetic-entity
#20
Manilal Banoth, Ramana Reddy Naru, Mohammed Basheeruddin Inamdar, Amit Kumar Chowhan
Swyer syndrome is a pure gonadal dysgenesis associated with a 46 XY karyotype and primary amenorrhea in a phenotypic female. Individuals in this syndrome are at an increased risk for development of gonadal malignancies. Swyer syndrome (gonadal dysgenesis) running in families is rare event and few such scenarios were reported in the literature. Here we are presenting this rare entity involving three affected siblings born to a non-consanguineous couple. Index case - A 23-year-old female with primary amenorrhea is presented with a mass per abdomen...
October 26, 2017: Gynecological Endocrinology
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