Abstract:
:The present study evaluates the participation of the vagus nerve in pre-pubertal rats with unilateral ovariectomy on puberty onset, and on progesterone, testosterone and estradiol serum levels, and the compensatory responses of the ovary. Unilateral vagotomy did not modify the onset of puberty in unilaterally ovariectomized rats. Ovulation rates of animals with the left vagus nerve sectioned and the left ovary in-situ was lower than in rats with only unilateral ovariectomy. Sectioning the left vagus to 32-day old rats with the left ovary in-situ resulted in lower compensatory ovarian hypertrophy than in rats with right unilateral ovariectomy. Twenty-eight or 32-day old animals with sectioning of the right vagus nerve and the right ovary in situ showed higher compensatory ovulation. Twenty-eight -day old rats with the right ovary in situ had higher progesterone and testosterone levels than animals of the same age with the left ovary in-situ. Compared to animals with the right ovary in situ, animals treated at 32-days of age, sectioning the ipsi-lateral vagus nerve resulted in higher progesterone levels. Higher progesterone levels were observed in 28- and 32 days old rats with the left ovary in situ and left vagus nerve sectioned. Thirty-two day old animals with the right ovary in situ and right vagus nerve sectioned had higher progesterone levels than rats of the same age with the left ovary in situ and left vagus nerve sectioned. Left vagotomy to 28-day old rats with the left ovary in situ resulted in higher testosterone levels, a reverse response to that observed in animals with sectioning of the right vagus and the right ovary in situ. Thirty-two day old rats with the left ovary in situ and left vagus nerve sectioned showed lower testosterone levels than animals without vagotomy and with the left ovary in situ.Twenty-eight -day old animals with the left vagus sectioned and left ovary in situ had lower estradiol serum levels than rats without unilateral vagotomy, a response similar to that observed in 32-day old rats with the right ovary in situ and right vagus nerve sectioned. Present results suggest an asymmetric regulation of steroid hormones secretion by the vagus nerve innervations in animals with unilateral ovariectomy, and those differences in testosterone serum levels observed are associated to the ovary remaining in-situ, vagal innervation and age when the animals were treated.
journal_name
Reprod Biol Endocrinoljournal_title
Reproductive biology and endocrinology : RB&Eauthors
Morales L,Ricardo B,Bolaños A,Chavira R,Domínguez Rdoi
10.1186/1477-7827-5-24subject
Has Abstractpub_date
2007-06-13 00:00:00pages
24issn
1477-7827pii
1477-7827-5-24journal_volume
5pub_type
杂志文章abstract::Gonadotropin-primed immature rats (GPIR) constitute a widely used model for the study of ovulation. Although the equivalence between the ovulatory process in immature and adult rats is generally assumed, the morphological and functional characteristics of ovulation in immature rats have been scarcely considered. We de...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-2-63
更新日期:2004-09-03 00:00:00
abstract:BACKGROUND:A limited number of publications have assessed the prevalence of hypertension (HTN) in polycystic ovary syndrome (PCOS) patients with inconclusive results. Since in general populations the occurrence of hypertension is related to age per se, we investigated the prevalence (P) / relative risk (RR) of HTN in p...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章,评审
doi:10.1186/s12958-020-00576-1
更新日期:2020-03-17 00:00:00
abstract:BACKGROUND:Relaxin is detected in seminal plasma of many species and its association with sperm motility may be beneficial in some aspects of assisted reproduction. Here, we immunolocalized relaxin receptors and investigated the effects of exogenous relaxin on motility characteristics, viability, and cAMP content of bo...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-015-0021-4
更新日期:2015-03-31 00:00:00
abstract:BACKGROUND:Age at menarche is the reflection of cumulative pre-adolescent exposure of girls to either adverse environment such as food insecurity or affluent living conditions. Food insecurity could result in inadequate nutrient intake and stress, both of which are hypothesized to have opposing effects on the timing of...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-9-125
更新日期:2011-09-13 00:00:00
abstract:BACKGROUND:Endometriosis is a known cause of infertility. Differences in immune tolerance caused by regulatory T cells (Tregs) and transforming growth factor-β (TGF-β) are thought to be involved in the pathology of endometriosis. Evidence has indicated that Tregs can be separated into three functionally and phenotypica...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-018-0325-2
更新日期:2018-02-01 00:00:00
abstract:BACKGROUND:Several kinds of anti-oxidants have drawn a lot of intention for their benefits on vascular protection. In addition, it has been demonstrated that exercise training could improve endothelial function by up-regulating endothelial nitric oxide synthase (eNOS) protein. Therefore, the present study aims to inves...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-7-93
更新日期:2009-09-07 00:00:00
abstract:BACKGROUND:The purpose of this study was to test the hypothesis that menstruation is associated with a higher concentration of endometrial cells in peritoneal fluid(PF) and with increased white and red blood cell concentration in PF when compared to nonmenstrual phases of the cycle. METHODS:PF was obtained at laparosc...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-7-123
更新日期:2009-10-30 00:00:00
abstract:BACKGROUND:Embryo selection has been an integral feature of in vitro fertilization (IVF) almost since its inception. Since the advent of extended blastocyst stage embryo culture, and especially with increasing popularity of elective single embryo transfer (eSET), the concept of embryo selection has increasingly become ...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-13-3
更新日期:2015-01-11 00:00:00
abstract:BACKGROUND:Polycystic Ovary Syndrome (PCOS) is the most common gynecological endocrinopathy in women of reproductive age. Despite its heavy burden on female reproduction and general health, there is no study regarding PCOS prevalence in Palestine. This study aims to establish prevalence of PCOS among female university ...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-11-47
更新日期:2013-05-20 00:00:00
abstract:BACKGROUND:The World Health Organization (WHO) international body mass index (BMI) cut-off points defining pre-pregnancy BMI categories in the Institute of Medicine (IOM) guidelines are not directly applicable to Asians. We aimed to define the optimal gestational weight gain (GWG) for the Korean population based on Asi...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-017-0280-3
更新日期:2017-08-22 00:00:00
abstract:OBJECTIVES:It is essential to understand the molecular basis of ovarian cancer etiology and tumor development to provide more effective preventive and therapeutic approaches to reduce mortality. Particularly, the molecular targets and pathways involved in early malignant transformation are still not clear. Pro-inflamma...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-8-74
更新日期:2010-06-24 00:00:00
abstract:BACKGROUND:In several species, considerably higher levels of estradiol-17 (E2) are synthesized in the CL. E2 has been suggested to participate in the regulation of luteal steroidogenesis and luteal cell morphology. In pregnant rats, several experiments have been carried out to examine the effects of inhibition of lutea...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-016-0153-1
更新日期:2016-04-12 00:00:00
abstract::Preimplantation embryo development involves four stages: fertilization, cell cleavage, morula and blastocyst formation. During these stages, maternal and zygotic epigenetic factors play crucial roles. The gene expression profile is changed dramatically, chromatin is modified and core histone elements undergo significa...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章,评审
doi:10.1186/1477-7827-7-59
更新日期:2009-06-05 00:00:00
abstract:BACKGROUND:We found previously that the expression of SET gene was up-regulated in polycystic ovaries. Evidences suggested that SET protein was essential for regulating both the promoter activity of CYP17A1 and the biological activity of P450c17. In this study, we explored whether SET regulated androgen production in p...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-11-9
更新日期:2013-02-19 00:00:00
abstract:BACKGROUND:The placenta is an essential organ that provides nutrients and oxygen to the developing fetus and removes toxic waste products from the fetal circulation. Maintaining placental blood osmotic pressure and blood flow is crucial for viable offspring. The renin-angiotensin system (RAS) in the placenta is a key p...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-015-0088-y
更新日期:2015-08-12 00:00:00
abstract::Trophoblast cells are unique because they are one of the few mammalian cell types that do not express major histocompatibility complex (MHC) class II antigens, either constitutively or after exposure to IFN-gamma. The absence of MHC class II antigen expression on trophoblast cells has been postulated to be one of the ...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章,评审
doi:10.1186/1477-7827-2-52
更新日期:2004-07-05 00:00:00
abstract:BACKGROUND:Pregnancy-associated plasma protein-A2 (PAPP-A2) is consistently upregulated in the placentae of pregnancies complicated by preeclampsia and fetal growth restriction. The causes and significance of this upregulation remain unknown, but it has been hypothesized that it is a compensatory response to improve pl...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-018-0376-4
更新日期:2018-06-12 00:00:00
abstract:BACKGROUND:New anticancer treatments have increased survival rates for cancer patients, but often at the cost of sterility. Several strategies are currently available for preserving fertility. However, the chances of achieving a pregnancy with one technique are still limited. A combination of methods is therefore recom...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-11-19
更新日期:2013-03-05 00:00:00
abstract:BACKGROUND:Polycystic ovary syndrome (PCOS) is a complex endocrine and metabolic disorder associated with ovulatory dysfunction, abdominal obesity, hyperandrogenism, hypertension, and insulin resistance. METHODS:Our objectives in this study were (1) to estimate sympathetic-adrenal medullary (SAM) activity by measuring...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-3-44
更新日期:2005-09-07 00:00:00
abstract:BACKGROUND:L-carnitine (LC), and its acetylated form, acetyl L-carnitine (ALC), have immense functional capabilities to regulate the oxidative and metabolic status of the female reproductive system. The vulnerability of this system to free radicals demand for advanced strategies to combat them. For this purpose, the 'q...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章,评审
doi:10.1186/s12958-018-0323-4
更新日期:2018-01-26 00:00:00
abstract:BACKGROUND:The injection of estradiol valerate in female rats induces polycystic ovary syndrome, which is characterized by polycystic ovaries, anovulation, and hyperandrogenism. These characteristics have been associated with an increase in the ovarian concentration of norepinephrine, which occurs before establishing t...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-018-0400-8
更新日期:2018-09-07 00:00:00
abstract:BACKGROUND:Studies suggested that microRNAs influence cellular activities in the uterus including cell differentiation and embryo implantation. In assisted reproduction cycles, luteal phase support, given to improve endometrial characteristics and to facilitate the implantation process, has been a standard practice. Th...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章,随机对照试验
doi:10.1186/1477-7827-10-72
更新日期:2012-09-06 00:00:00
abstract::Recent reports indicate that functional mouse oocytes and sperm can be derived in vitro from somatic cell lines. We hypothesize that in adult human ovaries, mesenchymal cells in the tunica albuginea (TA) are bipotent progenitors with a commitment for both primitive granulosa and germ cells. We investigated ovaries of ...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-2-20
更新日期:2004-04-28 00:00:00
abstract:BACKGROUND:Relaxin levels in seminal plasma have been associated with positive effects on sperm motility and quality, and thus having potential roles in male fertility. However, the origin of seminal relaxin, within the male reproductive tract, and the moment of its release in the vicinity of spermatozoa remain unclear...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-015-0043-y
更新日期:2015-05-20 00:00:00
abstract:BACKGROUND:Previous caesarean scar pregnancy is one type of ectopic pregnancy in myometrium and fibrous tissue of previous caesarean scar. One of the therapeutic methods of this type of ectopic pregnancy is treatment with methotrexate. Given various findings on the treatment of caesarean scar pregnancy with methotrexat...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-020-00666-0
更新日期:2020-11-09 00:00:00
abstract::Endometrial carcinoma is the most common neoplasm of the female genital tract, accounting for nearly one half of all gynecologic cancers in the Western world. Although intensive research on pathological phenomena of endometrial cancer is currently going on, but exact cause and biological aspects of this disease are no...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-7-81
更新日期:2009-08-05 00:00:00
abstract:BACKGROUND:The published results regarding lymphocytes immunotherapy for unexplained recurrent miscarriage (uRM) patients are conflicting due to different screening criteria and therapeutic protocols. The objective of the present study is to evaluate the effectiveness of immunotherapy using low-dose lymphocytes in pati...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-017-0315-9
更新日期:2017-12-16 00:00:00
abstract:BACKGROUND:High levels of dopamine (DA) were described in human ovary and recently evidence for DA receptors in granulosa and luteal cells has been provided, as well. However, neither the full repertoire of ovarian receptors for DA, nor their specific role, is established. Human granulosa cells (GCs) derived from women...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-5-40
更新日期:2007-10-25 00:00:00
abstract:BACKGROUND:Spermatozoa are extremely vulnerable to oxidative stress caused by the unbalance between concentrations of reactive oxygen species and antioxidant scavenging systems present inside the male reproductive tract. In spite of a large number of clinical studies that claimed the beneficial effects of antioxidant o...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-11-81
更新日期:2013-08-16 00:00:00
abstract:BACKGROUND:Overweight and obese women have been shown to have an increased risk of recurrent miscarriage as well as other adverse reproductive outcomes, but it is yet unclear whether this is due to an effect on the endometrium, embryo or both. The current study employs proteomic analysis to examine for a potential endo...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-12-75
更新日期:2014-08-05 00:00:00