Abstract：
:This study was conducted to investigate the effects of unilateral cryptorchidism on androgen production and testicular maturation. Experimental cryptorchidism was produced in small and large prepuberal guinea pigs by forcing the testis to remain in the abdomen for a period of 30 days. Small prepuberal animals, which did not reach sexual maturity, showed discrete reductions in the size and weight of the ectopic testes when compared with the scrotal testes. Immaturity of germinal line, tubular size, and intertubular spaces were more pronounced in the ectopic tissue. Both glands produced 4-androstenedione as a primary metabolic product of pregnenolone. Large prepuberal animals, puberal at the time of operation, showed tubular size, spermatic line, and interstitial tissue completely developed in the scrotal gland. Testosterone production was quite similar to that produced in postpuberal testes. The ectopic organ showed only Sertolic cells, some vacuolated, and a few spermatogonia in the tubules. The spaces contained Leydig cells. A significant accumulation of 4-adrenostenedione and a lower testosterone production, compared with that found in the scrotal gland, were observed. The histologic immaturity and the hormonal biosynthesis of the puberal cryptorchid testis parallel findings in scrotal glands from sexually immature guinea pigs.
journal_name
Fertil Steriljournal_title
Fertility and sterilityauthors
Hoscholan JC,Andrada JAsubject
Has Abstractpub_date
1975-07-01 00:00:00pages
730-8issue
7eissn
0015-0282issn
1556-5653pii
S0015-0282(16)41242-2journal_volume
26pub_type
杂志文章abstract：OBJECTIVE:To determine the regulatory role of hCG on P secretion in normal and abnormal (abortive and ectopic) first trimester pregnancies. STUDY DESIGN:The number of doublings of hCG per day (1/DT; reciprocal of hCG doubling time) was correlated with serum P using linear and nonlinear models in normal intrauterine pr...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/s0015-0282(16)56876-9
更新日期：1994-08-01 00:00:00
abstract：OBJECTIVE:To evaluate the effects of a coculture with human endometrial cells on the function of spermatozoa from samples obtained from infertile couples. DESIGN:In a prospective study, human spermatozoa selected by swim-up from fresh samples were cultured on human endometrial feeder layers. Thereafter, their viabilit...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/s0015-0282(16)56469-3
更新日期：1994-01-01 00:00:00
abstract：OBJECTIVE:To report the case of a female who presented in childhood with symptoms and signs of hyperandrogenism secondary to an extraovarian steroid cell tumor. DESIGN:Case report. SETTING:Endocrine investigation unit of a university teaching hospital. PATIENT(S):An 11-year-old female presented with symptoms and sig...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/j.fertnstert.2005.06.055
更新日期：2006-01-01 00:00:00
abstract：OBJECTIVE:To explore the role of tumor necrosis factor (TNF) α, an early embryonic product, on endometrial epithelial cell migration and endometrial milk fat globule-epidermal growth factor 8 protein (MFG-E8) production. DESIGN:In vitro study. SETTING:Academic center. INTERVENTION(S):Ishikawa cells, used as surrogat...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/j.fertnstert.2013.10.032
更新日期：2014-02-01 00:00:00
abstract：OBJECTIVE:To investigate the proportional changes of CD4(+)CD25(+) regulatory T cells in peripheral blood and decidua in unexplained recurrent spontaneous abortion (URSA) and normal pregnant (NP) women. DESIGN:Prospective, case-control study. SETTING:Large public hospital in a major city in China. PATIENT(S):Twenty-...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/j.fertnstert.2007.03.037
更新日期：2008-03-01 00:00:00
abstract：OBJECTIVE:To evaluate the association between adiposity, physical activity (PA), and fecundability. DESIGN:Prospective cohort study. SETTING:Not applicable. PATIENT(S):A total of 2,062 female pregnancy planners from the United States and Canada who were enrolled during the preconception period. INTERVENTION(S):None...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/j.fertnstert.2016.04.011
更新日期：2016-08-01 00:00:00
abstract：OBJECTIVE:To evaluate binding characteristics of a specific zona pellucida (ZP) protein 3 (ZP3) antiserum to human oocytes in order to determine its usefulness as a clinical marker for human ZP integrity and function and its correlation with IVF outcome. DESIGN:Prospectively designed, blinded, internally controlled st...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/s0015-0282(16)58041-8
更新日期：1996-01-01 00:00:00
abstract：OBJECTIVE:To study the oocyte quality in patients with ovarian hyperstimulation syndrome (OHSS). DESIGN:Retrospective study. SETTING:The Egyptian IVF-ET Center. PATIENT(S):Forty-two patients who developed severe OHSS (group A) were studied for the mean number of oocytes retrieved, percentage of high-quality oocytes,...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/s0015-0282(97)00409-3
更新日期：1997-12-01 00:00:00
abstract：OBJECTIVE:To compare the efficacy of a sequential step-up/step-down protocol with the conventional low dose step-up and the step-down regimens in patients with polycystic ovary syndrome (PCOS) undergoing IVF. DESIGN:Prospective randomized study. SETTING:Private fertility clinic. PATIENT(S):Two hundred twenty-five, 3...
journal_title：Fertility and sterility
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.fertnstert.2007.06.080
更新日期：2008-09-01 00:00:00
abstract：:For those patients who have multiple pregnancies there are several considerations that must be made. When the pregnancies are the result of induced ovulation there is a significant iatrogenic element. Counselling must be provided for couples throughout the entire process. From the beginning of the inductio n pr...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/s0015-0282(16)53689-9
更新日期：1990-08-01 00:00:00
abstract：:It is clear that women with primary ovarian insufficiency are asking the health care community to alter the current standard, which requires the patient to seek a different specialist for each of her health care needs, and instead work as a team of caregivers that embraces each patient as a woman with complex and indi...
journal_title：Fertility and sterility
pub_type： 评论,杂志文章
doi：10.1016/j.fertnstert.2011.03.006
更新日期：2011-05-01 00:00:00
abstract：:The study and treatment of luteal phase defect since the late 1940s, particularly the work of Georgeanna Seegar Jones, are summarized. ...
journal_title：Fertility and sterility
pub_type： 传,历史文章,杂志文章
doi：10.1016/j.fertnstert.2007.08.036
更新日期：2008-11-01 00:00:00
abstract：:A case-control study was conducted to determine whether use of oral contraceptives (OCs) is associated with an increased risk of prolactin-secreting pituitary adenomas. Two hundred twelve women with such adenomas (140 of which were surgically confirmed) were recruited from four clinical centers and interviewed and mat...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：
更新日期：1983-06-01 00:00:00
abstract：OBJECTIVE:To report the case of an infertile female patient with cystic fibrosis who was diagnosed with endocervical metaplasia of the endometrium at diagnostic hysteroscopy and successfully treated with an oral estroprogestinic formulation. DESIGN:Case report. SETTING:University hospital. PATIENT(S):A 27-year-old i...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/j.fertnstert.2005.07.1336
更新日期：2006-03-01 00:00:00
abstract：:When dispersed spermatogenic cells obtained by enzymatic digestion from prepuberal mice, adult male mice, nonazoospermic men and normospermic men were observed live using Normarski optics, it was found that, respectively, 47.4%, 1.4%, 5.1%, and 2.4% of them protruded active pseudopodia. These cells were 8 to 10 mum in...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/j.fertnstert.2007.06.055
更新日期：2008-08-01 00:00:00
abstract：OBJECTIVE:To compare the clinical outcome of controlled ovarian hyperstimulation (COH) in unselected patients undergoing IVF using multidose ganirelix acetate versus 4 days of administration of leuprolide acetate. DESIGN:Retrospective cohort study. SETTING:A fertility and IVF center. PATIENT(S):Two hundred forty-sev...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/s0015-0282(03)00500-4
更新日期：2003-07-01 00:00:00
abstract：:We prospectively evaluated the behavior of serum 17-hydroxyprogesterone (17-OHP), sex-steroid hormones, and C-reactive protein (CRP) levels in 27 patients during controlled ovarian hyperstimulation (COH) for in vitro fertilization (IVF). While routine measurement of COH via serum 17-OHP may replace estradiol (E(2)) an...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/j.fertnstert.2007.05.024
更新日期：2008-05-01 00:00:00
abstract：OBJECTIVE:To determine whether progestins activate vascular endothelial growth factor (VEGF) gene transcription in endometrial adenocarcinoma cells. DESIGN:In vitro study. SETTING:University reproductive biology laboratories. PATIENT(S):None. INTERVENTION(S):Ishikawa cells were transfected with VEGF promoter-lucife...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/s0015-0282(02)04577-6
更新日期：2003-02-01 00:00:00
abstract：:Transvaginal follicular aspiration (TVA) with ultrasonically guided needles allows the transfer of in vitro generated embryos to the fallopian tubes (TET), performing only one surgical procedure in the process. Up to now, this approach has been used to treat 16 couples with infertility due to severe male factor. Folli...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/s0015-0282(16)60136-x
更新日期：1988-09-01 00:00:00
abstract：OBJECTIVE:To identify biomarkers associated with reproductive outcome using proton nuclear magnetic resonance ((1)H NMR) metabolomic profiling of embryo culture media. DESIGN:Retrospective study. SETTING:An academic assisted reproductive technology (ART) program; a university research center. PATIENT(S):Women underg...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/j.fertnstert.2008.07.1739
更新日期：2008-12-01 00:00:00
abstract：OBJECTIVE:To evaluate a new strategy for comprehensive chromosome screening at the blastocyst stage. DESIGN:Clinical research study. SETTING:An IVF clinic and a specialist preimplantation genetic diagnosis laboratory. PATIENT(S):Forty-five infertile couples participated in the study. The mean maternal age was 37.7 y...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/j.fertnstert.2009.10.015
更新日期：2010-10-01 00:00:00
abstract：:In a program of human in vitro fertilization (IVF), the results of 204 attempted intracervical embryo transfers (ETs), using a variety of catheters in three trials over 18 months, have been analyzed for the ease of transfer and pregnancy rate. In nulliparous patients, transfers were more difficult than in multiparous ...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/s0015-0282(16)46451-4
更新日期：1982-08-01 00:00:00
abstract：:Carbohydrate and lipid metabolism was evaluated in 31 women before and after 1 year's use of a progesterone-releasing intrauterine device. The studies involved measuring blood glucose and plasma insulin levels during a 3-hour oral glucose tolerance test and also measuring fasting cholesterol and triglyceride levels. T...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/s0015-0282(16)43932-4
更新日期：1979-04-01 00:00:00
abstract：OBJECTIVE:To identify if there are certain cutoff levels for P and or the P/E(2) ratio on the day of hCG that would be defined as detrimental for occurrence of pregnancy in women with normal ovarian reserve undergoing cleavage-stage embryo transfer (ET). Secondarily, to determine if these same cutoffs might have the sa...
journal_title：Fertility and sterility
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.fertnstert.2010.12.065
更新日期：2011-04-01 00:00:00
abstract：:The association between educational level and cycle outcomes was quantified by applying multivariable logistic and linear regression within a prospective cohort of 2,569 women commencing their first in vitro fertilization (IVF) cycle. Although a woman's educational attainment was not associated with the likelihood of ...
journal_title：Fertility and sterility
pub_type： 杂志文章,多中心研究
doi：10.1016/j.fertnstert.2011.05.015
更新日期：2011-06-30 00:00:00
abstract：OBJECTIVE:To report a live birth after successful preimplantation genetic diagnosis (PGD) for carriers of complex chromosomal rearrangements (CCRs) with translocation and deletion. DESIGN:Fluorescent in situ hybridization (FISH) was applied to PGD for CCR carriers. SETTING:University-based centers for reproductive me...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/j.fertnstert.2007.08.016
更新日期：2008-11-01 00:00:00
abstract：OBJECTIVE:To evaluate novel clinical markers of endometriosis including the neurotrophins brain-derived neurotrophic factor (BDNF), nerve growth factor (NGF), and neurotrophin 4/5 (NT4/5) and compare them to others previously reported in the literature including cancer antigen 125 (CA-125) and C-reactive protein (CRP)....
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/j.fertnstert.2015.09.003
更新日期：2016-01-01 00:00:00
abstract：:Sperm penetration through bovine cervical mucus was determined and correlated with the sperm characteristics in three fractions of the split ejaculate and in the whole ejaculate from 40 men of infertile couples in which a female cause of infertility had been ruled out. Sperm concentration and motility were found to be...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：
更新日期：1984-08-01 00:00:00
abstract：:Based on American Society for Reproductive Medicine (ASRM) and Society for Assisted Reproductive Technology data available for 2010, ASRM's guidelines for the number of embryos to be transferred in in vitro fertilization cycles have been further refined in continuing efforts to reduce the number of higher-order multip...
journal_title：Fertility and sterility
pub_type： 杂志文章,实务指引
doi：10.1016/j.fertnstert.2012.09.038
更新日期：2013-01-01 00:00:00
abstract：OBJECTIVE:To report a rare complication of GnRH agonist therapy for intestinal endometriosis. DESIGN:Case report. SETTING:University hospital. PATIENT(S):A 45-year-old nulliparous Japanese woman with catamenial digestive symptoms. INTERVENTION(S):GnRH agonist therapy. MAIN OUTCOME MEASURE(S):Acute abdomenal crisis...
journal_title：Fertility and sterility
pub_type： 杂志文章
doi：10.1016/j.fertnstert.2006.12.082
更新日期：2007-10-01 00:00:00
