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https://www.readbyqxmd.com/read/28438374/validity-of-self-assessed-sexual-maturation-against-physician-assessments-and-hormone-levels
#1
Jorge E Chavarro, Deborah J Watkins, Myriam C Afeiche, Zhenzhen Zhang, Brisa N Sánchez, David Cantonwine, Adriana Mercado-García, Clara Blank-Goldenberg, John D Meeker, Martha María Téllez-Rojo, Karen E Peterson
OBJECTIVE: To compare self-report and physician assessments of sexual maturation against serum hormone markers to evaluate the hypothesis that the validity of self-assessed sexual maturation is underestimated in traditional validation studies. STUDY DESIGN: We adapted a self-assessment instrument that 248 Mexican children and adolescents, aged 8-13 years, completed. The participants were examined by a trained pediatrician and provided fasting blood samples for measurement of reproductive hormones (eg, testosterone, estradiol, sex hormone-binding globulin, inhibin B) and other hormones (eg, C-peptide, insulin-like growth factor 1, leptin, dehydroepiandrosterone sulfate) known to change during adolescence...
April 21, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28428886/vaccination-with-inhibin-%C3%AE-provides-effective-immunotherapy-against-testicular-stromal-cell-tumors
#2
Robert Aguilar, Justin M Johnson, Patrick Barrett, Vincent K Tuohy
BACKGROUND: Testicular cancer is the most common male neoplasm occurring in men between the ages of 20 and 34. Although germ-line testicular tumors respond favorably to current standard of care, testicular stromal cell (TSC) tumors derived from Sertoli cells or Leydig cells often fail to respond to chemotherapy or radiation therapy and have a 5-year overall survival significantly lower than the more common and more treatable germ line testicular tumors. METHODS: To improve outcomes for TSC cancer, we have developed a therapeutic vaccine targeting inhibin-α, a protein produced by normal Sertoli and Leydig cells of the testes and expressed in the majority of TSC tumors...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28424419/integrated-analysis-of-genes-associated-with-poor-prognosis-of-patients-with-colorectal-cancer-liver-metastasis
#3
Zhenyuan Qian, Guobing Zhang, Guangyuan Song, Ji Shi, Lijie Gong, Yiping Mou, Yong Han
Colorectal cancer (CRC) is one of the most common malignances in the gut. Liver is the most common metastasis site of CRC. This study focuses on the primary CRC and its liver metastasis, aiming to discover several liver metastasis related genes and provide therapeutic candidates. We compared gene expression patterns among the groups of normal colorectal mucosa, primary tumor and the liver metastasis using a CRC gene expression dataset. 84 genes were found to be upregulated in both primary tumor and liver metastases...
April 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28324034/anti-m%C3%A3-llerian-hormone-and-ovarian-morphology-in-women-with-isolated-hypogonadotropic-hypogonadism-kallmann-syndrome-effects-of-recombinant-human-fsh
#4
Hélène Bry-Gauillard, Florence Larrat-Ledoux, Jean-Marc Levaillant, Nathalie Massin, Luigi Maione, Isabelle Beau, Nadine Binart, Philippe Chanson, Sylvie Brailly-Tabard, Janet E Hall, Jacques Young
Context: Isolated hypogonadotropic hypogonadism (IHH), characterized by gonadotropin deficiency and absent puberty, is very rare in women. IHH prevents pubertal ovarian stimulation, but anti-Müllerian hormone (AMH) and antral follicle count (AFC) have not been studied. Objectives: (1) To compare, in IHH vs controls, AMH, ovarian volume (OV), and AFC. (2) To compare, in IHH, ovarian responses to recombinant human follicle-stimulating hormone (rhFSH) and rhFSH plus recombinant human luteinizing hormone (rhLH)...
April 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28304252/utility-of-orchidometric-parameters-for-assessing-sexual-maturation-in-male-cynomolgus-macaques-macaca-fascicularis
#5
Michael L Mirsky, Susan Portugal, Harshan Pisharath, Jodi L Osowski, Laura Kearney
Testicular volume is one of several parameters that have been used in preclinical toxicology to facilitate the identification of sexually mature male cynomolgus macaques when semen evaluation is unavailable. Furthermore, testicular volume provides additional information to pathologists to aid in the interpretation of microscopic findings. Orchidometry has been proposed as a useful tool for assessing testicular volume. To assess its utility for this purpose, we used orchidometry to measure testicular volume in untreated control male cynomolgus macaques during preclinical toxicology studies...
December 1, 2016: Comparative Medicine
https://www.readbyqxmd.com/read/28301516/follistatin-attenuates-radiation-induced-fibrosis-in-a-murine-model
#6
Helen B Forrester, David M de Kretser, Trevor Leong, Jim Hagekyriakou, Carl N Sprung
PURPOSE: Fibrosis can be a disabling, severe side effect of radiotherapy that can occur in patients, and for which there is currently no effective treatment. The activins, proteins which are members of the TGFβ superfamily, have a major role in stimulating the inflammatory response and subsequent fibrosis. Follistatin is an endogenous protein that binds the activins virtually irreversibly and inhibits their actions. These studies test if follistatin can attenuate the fibrotic response using a murine model of radiation-induced fibrosis...
2017: PloS One
https://www.readbyqxmd.com/read/28299766/increased-level-of-c-kit-in-semen-of-infertile-patients-with-varicocele
#7
Guorong Jin, Jianrong Liu, Qin Qin, Songdan Gao, Fang Zhang, Yuehong Ma, Caiyun Ding, Lina Dong, Haizhen Yin, Yimin Wang
PURPOSE: Varicocele is the most common risk factor for male infertility, however, not all males with varicocele experience infertility. In fact, most patients with varicocele have normal spermatogenesis. The molecular mechanism of varicocele-associated infertility is yet to be completely understood. The aim of this study is to assess the association of a number of fertility regulatory factors on varicocele associated infertility and to throw light on the mechanism of varicocele-associated infertility...
March 16, 2017: Urology Journal
https://www.readbyqxmd.com/read/28299491/effects-of-androgen-receptor-mutation-on-testicular-histopathology-of-patient-having-complete-androgen-insensitivity
#8
Ihtisham Bukhari, Guangyuan Li, Liu Wang, Furhan Iqbal, Huan Zhang, Jiansheng Zhu, Hui Liu, Xiangdong Fang, Nasser M Al-Daghri, Howard J Cooke, Yuanwei Zhang, Xiaohua Jiang
Androgens are required for normal male sex differentiation and development of male secondary sexual characteristics. Mutations in AR gene are known to cause defects in male sexual differentiation. In current study, we enrolled a 46,XY phenotypically female patient bearing testes in inguinal canal. DNA sequencing of the AR gene detected a missense mutation C.1715A > G (p. Y572C) in exon 2 which is already known to cause complete androgen insensitivity syndrome (CAIS). We focused on the effects of this mutation on the testicular histopathology of the patient...
March 15, 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/28276867/pathogenesis-and-treatment-of-adult-type-granulosa-cell-tumor-of-the-ovary
#9
Anniina Färkkilä, Ulla-Maija Haltia, Johanna Tapper, Melissa K McConechy, David G Huntsman, Markku Heikinheimo
Adult-type granulosa cell tumor is a clinically and molecularly unique subtype of ovarian cancer. These tumors originate from the sex cord stromal cells of the ovary and represent 3-5% of all ovarian cancers. The majority of adult-type granulosa cell tumors are diagnosed at an early stage with an indolent prognosis. Surgery is the cornerstone for the treatment of both primary and relapsed tumor, while chemotherapy is applied only for advanced or non-resectable cases. Tumor stage is the only factor consistently associated with prognosis...
March 6, 2017: Annals of Medicine
https://www.readbyqxmd.com/read/28262687/the-syndrome-of-central-hypothyroidism-and-macroorchidism-igsf1-controls-trhr-and-fshb-expression-by-differential-modulation-of-pituitary-tgf%C3%AE-and-activin-pathways
#10
Marta García, Raquel Barrio, Montserrat García-Lavandeira, Angela R Garcia-Rendueles, Adela Escudero, Esther Díaz-Rodríguez, Darya Gorbenko Del Blanco, Ana Fernández, Yolanda B de Rijke, Elena Vallespín, Julián Nevado, Pablo Lapunzina, Vilborg Matre, Patricia M Hinkle, Anita C S Hokken-Koelega, María P de Miguel, José Manuel Cameselle-Teijeiro, Manuel Nistal, Clara V Alvarez, José C Moreno
IGSF1 (Immunoglobulin Superfamily 1) gene defects cause central hypothyroidism and macroorchidism. However, the pathogenic mechanisms of the disease remain unclear. Based on a patient with a full deletion of IGSF1 clinically followed from neonate to adulthood, we investigated a common pituitary origin for hypothyroidism and macroorchidism, and the role of IGSF1 as regulator of pituitary hormone secretion. The patient showed congenital central hypothyroidism with reduced TSH biopotency, over-secretion of FSH at neonatal minipuberty and macroorchidism from 3 years of age...
March 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28261833/diagnostic-utility-of-testosterone-priming-prior-to-dynamic-tests-to-differentiate-constitutional-delay-in-puberty-from-isolated-hypogonadotropic-hypogonadism
#11
Suja P Sukumar, Anil Bhansali, Naresh Sachdeva, Chirag Kamal Ahuja, Ujjwal Gorsi, Kush Dev Singh Jarial, Rama Walia
CONTEXT: Differentiation between constitutional delay in puberty (CDP) and isolated hypogonadotropic hypogonadism (IHH) during adolescence is a great clinical challenge, and the available diagnostic tests are of limited value. OBJECTIVE: To study the effect of withdrawal of short-term, low-dose testosterone therapy (testosterone priming) on the discriminatory power of dynamic tests for hypothalamo-pituitary-testicular axis to differentiate CDP from IHH. DESIGN: A prospective study (n = 30) consisting of 20 boys with delayed puberty (group A) and 10 patients with IHH (group B)...
March 5, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28224431/clinical-value-of-serum-anti-mullerian-hormone-and-inhibin-b-in-prediction-of-ovarian-response-in-patients-with-polycystic-ovary-syndrome
#12
Fan Zhang, Xiao-Ling Liu, Nan Rong, Xiao-Wen Huang
The present study aimed to investigate the clinical value of serum anti-mullerian hormone (AMH) and inhibin B (INHB) in predicting the ovarian response of patients with polycystic ovary syndrome (PCOS). A total of 120 PCOS patients were enrolled and divided into three groups in terms of the ovarian response: a low-response group (n=36), a normal-response group (n=44), and a high-response group (n=40). The serum AMH and INHB levels were measured by enzyme-linked immunosorbent assay (ELISA). The follicle stimulating hormone (FSH), luteinizing hormone (LH), and estradiol (E2) levels were determined by chemiluminescence microparticle immunoassay...
February 2017: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/28222406/leydig-cell-clustering-and-reinke-crystal-distribution-in-relation-to-hormonal-function-in-adult-patients-with-testicular-dysgenesis-syndrome-tds-including-cryptorchidism
#13
Rikke R Soerensen, Trine H Johannsen, Niels E Skakkebaek, Ewa Rajpert-De Meyts
OBJECTIVE: Testicular dysgenesis syndrome (TDS) comprises testicular germ cell cancer, cryptorchidism and some cases of male infertility and hypospadias, which can be linked to impairment of intrauterine gonadal development. Among histological signs of TDS, large Leydig cell (LC) clusters (micronodules) are frequently present. This study aimed to investigate possible associations of LC micronodules with the presence of Reinke crystals and hormonal function of LCs, the latter primarily reflected by serum concentrations of luteinising hormone (LH) and testosterone, in patients with TDS...
October 2016: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28214591/hyperglycemia-is-associated-with-reduced-testicular-function-and-activin-dysregulation-in-the-ins2-akita-mouse-model-of-type-1-diabetes
#14
Constanze C Maresch, Dina C Stute, Helen Ludlow, Hans-Peter Hammes, David M de Kretser, Mark P Hedger, Thomas Linn
Type 1 diabetes (T1D) is associated with subfertility in men. We hypothesised that this results from inhibitory effects of chronic hyperglycemia on testicular function and used the Ins2(Akita+/-) mouse model to investigate this. Diabetic mice exhibited progressive testicular dysfunction, with a 30% reduction in testis weight at 24 weeks of age. Diabetic mice showed significantly reduced seminiferous tubule diameters and increased spermatogenic disruption, although testes morphology appeared grossly normal. Unexpectedly, serum LH and intra-testicular testosterone were similar in all groups...
May 5, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28208955/high-serum-estradiol-and-heavy-metals-responsible-for-human-spermiation-defect-a-pilot-study
#15
Manish Jain, Amanpreet Kaur Kalsi, Amita Srivastava, Yogendra Kumar Gupta, Ashutosh Halder
INTRODUCTION: Spermiation is a process of releasing sperm into the lumen of seminiferous tubules. Failure in releasing sperm into the lumen is designated as spermiation defect. Spermiation defect cases present as oligo-azoospermia or azoospermia despite normal gonadotropins and testicular histology/cytology. Human spermiation defect never got attention to investigate infertility practice. Most of the information on spermiation defect, so far is from animal experiments. We assume some cases of non-obstructive azoospermia with normal gonadotropins and testicular histology/cytology could be due to spermiation defect...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28205525/testicular-activin-and-follistatin-levels-are-elevated-during-the-course-of-experimental-autoimmune-epididymo-orchitis-in-mice
#16
Nour Nicolas, Vera Michel, Sudhanshu Bhushan, Eva Wahle, Susan Hayward, Helen Ludlow, David M de Kretser, Kate L Loveland, Hans-Christian Schuppe, Andreas Meinhardt, Mark P Hedger, Monika Fijak
Experimental autoimmune epididymo-orchitis (EAEO) is a model of chronic inflammation, induced by immunisation with testicular antigens, which reproduces the pathology of some types of human infertility. Activins A and B regulate spermatogenesis and steroidogenesis, but are also pro-inflammatory, pro-fibrotic cytokines. Expression of the activins and their endogenous antagonists, inhibin and follistatin, was examined in murine EAEO. Adult untreated and adjuvant-treated control mice showed no pathology. All mice immunised with testis antigens developed EAEO by 50 days, characterised by loss of germ cells, immune cell infiltration and fibrosis in the testis, similar to biopsies from human inflamed testis...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28187771/the-effect-of-estradiol-on-granulosa-cell-responses-to-fsh-in-women-with-polycystic-ovary-syndrome
#17
Michael V Homer, Marcus A Rosencrantz, Rana F Shayya, R Jeffrey Chang
BACKGROUND: The influence of estradiol (E2) on granulosa cell (GC) function has not been tested clinically in women with polycystic ovary syndrome (PCOS). The objective of this study is to determine if E2 influences GC responses to FSH in women with PCOS. METHODS: This is a two phase, single cohort study conducted over a 2-year period at a single academic center. Nine women with PCOS according to NIH criteria. In Phase 1, FSH stimulation of GC responses as measured by E2 and Inhibin B (Inh B) were assessed before and at 5 and 6 weeks after GnRH agonist administration...
February 10, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28187504/extreme-spermatogenesis-failure-andrological-phenotype-and-intracytoplasmic-sperm-injection-outcomes
#18
P Plouvier, A-L Barbotin, F Boitrelle, D Dewailly, V Mitchell, J-M Rigot, V Lefebvre-Khalil, G Robin
Patients with very low sperm count through direct sperm examination can exhibit extreme oligozoospermia or cryptozoospermia (after centrifugation). The management of these patients is a real challenge for both clinicians and biologists. In this retrospective and comparative cohort study, we compared the andrological phenotype of patients with extreme alterations of spermatogenesis and assessed whether the origin of spermatozoa (testicular or ejaculate) had any influence on intracytoplasmic sperm injection (ICSI) outcomes...
March 2017: Andrology
https://www.readbyqxmd.com/read/28161677/serum-anti-m%C3%A3-llerian-hormone-and-inhibin-b-as-potential-markers-for-progressive-central-precocious-puberty-in-girls
#19
Ting Chen, Haiying Wu, Rongrong Xie, Fengyun Wang, Xiuli Chen, Hui Sun, Linqi Chen
STUDY OBJECTIVE: To investigate the potential of serum anti-Müllerian hormone (AMH) and inhibin B (INHB) levels as markers for pubertal progression rate in girls with central precocious puberty (CPP). DESIGN, SETTING, AND PARTICIPANTS, INTERWENTIONS, AND MAIN OUTCOME MEASURES: A total of 148 girls were enrolled, including 65 girls with premature thelarche (PT) and 83 girls with CPP, grouped based on the results of Gonadotropin-releasing hormone (GnRH) stimulation tests. Girls with CPP underwent a six-month follow-up, and were further divided into two subgroups: progressive CPP (P-CPP) group (n=55) and slowly progressive CPP (SP-CPP) group (n=28)...
February 1, 2017: Journal of Pediatric and Adolescent Gynecology
https://www.readbyqxmd.com/read/28117331/early-spermatogenesis-changes-in-traumatic-complete-spinal-cord-injured-adult-patients
#20
A Sánchez-Ramos, E Vargas-Baquero, F J Martin-de Francisco, J A Godino-Durán, I Rodriguez-Carrión, M Ortega-Ortega, L Mordillo-Mateos, F Coperchini, M Rotondi, A Oliviero, M Mas
STUDY DESIGN: Prospective longitudinal study. OBJECTIVES: To assess the impact of spinal cord injury (SCI) on the spermatogenesis of patients studied in the early subacute stage and ensuing months. SETTING: National hospital for SCI patients. METHODS: A prospective follow-up study was conducted on 28 male patients with complete SCI who were evaluated in the early subacute phase (~1 month), and 3 and 6 months after the injury...
January 24, 2017: Spinal Cord
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