Abstract:
BACKGROUND:High altitude is associated with both low pulse oxygen saturation at birth and more pre-term deliveries. The present study was performed to determine pulse oxygen saturation in newborns at term in Cerro de Pasco (4340 m) and Lima (150 m) to test the hypothesis that low pulse oxygen saturation at birth at high altitudes was not observed at term deliveries. METHODS:The present study was designed to determine pulse oxygen saturation values through 1 minute to 24 hours and values of Apgar score at 1 and 5 minutes in newborns delivered at term in Cerro de Pasco (4340 m) and Lima (150 m). Pulse oxygen saturation was recorded in 39 newborns from Cerro de Pasco (4340 m) and 131 from Lima (150 m) at 1, 2, 3, 4, 5, 10, 15, 30 minutes and 1, 2, 8 and 24 hours after delivery. Apgar score was assessed at 1 and 5 minutes after birth. Neurological score was assessed at 24 h of birth by Dubowitz exam. RESULTS:Pulse oxygen saturation increased significantly from 1 to 15 min after birth at sea level and from 1 to 30 minutes at Cerro de Pasco. Thereafter, it increased slightly such that at 30 min at sea level and at 60 minutes in Cerro de Pasco it reached a plateau up to 24 hours after birth. At all times, pulse oxygen saturation was significantly higher at sea level than at high altitude (P < 0.01). At 1 minute of life, pulse oxygen saturation was 15% lower at high altitude than at sea level. Apgar score at 1 minute was significantly lower at high altitude (P < 0.05). Neurological score at 24 hours was also lower at high altitude than at sea level. Head circumference, and Apgar score at 5 minutes were similar at sea level and at high altitude (P:NS). Incidence of low birth-weight (<2500 g) at high altitude (5.4%) was similar to that observed at sea level (2.29%) (P:NS). Incidences of low pulse oxygen saturation (<30%), low Apgar score at first minute (<7) and low neurological score at 24 h (<19) were significantly higher at high altitude than at sea level (P < 0.0001; P < 0.0001; and P < 0.001, respectively). CONCLUSION:From these analyses may be concluded that pulse oxygen saturation at 4340 m was significantly low despite the fact that births occurred at term. Apgar scores at first minute and neurological scores were also lower at high altitudes.
journal_name
Reprod Biol Endocrinoljournal_title
Reproductive biology and endocrinology : RB&Eauthors
Gonzales GF,Salirrosas Adoi
10.1186/1477-7827-3-46keywords:
subject
Has Abstractpub_date
2005-09-12 00:00:00pages
46issn
1477-7827pii
1477-7827-3-46journal_volume
3pub_type
杂志文章abstract:OBJECTIVE:To assess the effectiveness and safety of omega-3 fatty acid for patients with PCOS. METHODS:In this meta-analysis, data from randomized controlled trials were obtained to assess the effects of omega-3 fatty acid versus placebo or western medicine in women with PCOS. The study's registration number is CRD420...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章,meta分析,评审
doi:10.1186/s12958-018-0346-x
更新日期:2018-03-27 00:00:00
abstract:BACKGROUND:In assisted reproductive technology, prediction of treatment failure remains a great challenge. The development of more sensitive assays for measuring anti-Müllerian hormone (AMH) has allowed for the possibility to investigate if a lower threshold of AMH can be established predicting very limited or no respo...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-019-0452-4
更新日期:2019-01-11 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:BACKGROUND:A decrease in HOXA11 expression in eutopic mid-secretory endometrium has been found in women with endometriosis-associated infertility. METHODS:Using Real-time quantitative PCR (RQ-PCR) and western blotting analysis we studied the HOXA11 transcript and protein levels in mid-luteal eutopic endometrium from e...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-10-1
更新日期:2012-01-10 00:00:00
abstract:BACKGROUND:Serum leptin levels are augmented in obese infertile men and in men with azoospermia. They also correlate inversely with sperm concentration, motility and normal forms. The mechanisms underlying the adverse effects of excess leptin on male reproductive function remain unclear. The present study aimed to eval...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-018-0368-4
更新日期:2018-05-31 00:00:00
abstract:BACKGROUND:In-situ hybridisation studies demonstrate that Notch receptors and ligands are expressed in granulosa cells (GCs) and in the theca layer vasculature of growing follicles. Notch signaling involves cell-to-cell interaction mediated by transmembrane receptors and ligands. This signaling pathway may represent a ...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-11-43
更新日期:2013-05-15 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:Methadone is the therapeutic agent of choice for the treatment of opiate addiction in pregnancy. The co-consumption (heroin, cocaine) which may influence the effects of methadone is frequent. Therefore, the impact of cocaine and heroin on the placental transfer of methadone and the placental tissue was inves...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-7-61
更新日期:2009-06-11 00:00:00
abstract::For the extrapolation of data obtained from experimental animals to the human situation, it is important to know the similarities and differences between human and animal species. Some important characteristics of nitric oxide synthase (NOS) in myometrium and vagina from human and rat were compared. NOS-activity was m...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-1-10
更新日期:2003-02-06 00:00:00
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journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-11-85
更新日期:2013-09-03 00:00:00
abstract::Polycystic ovary syndrome (PCOS) is a common endocrine disorder, affecting 9-18% of women in reproductive age that causes hyperandrogenism and infertility due to dysfunctional follicular maturation and anovulation. The etiology of PCOS is still poorly known, and information from experimental animal models may help imp...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章,评审
doi:10.1186/s12958-017-0231-z
更新日期:2017-02-10 00:00:00
abstract:BACKGROUND:The physiological state of the dominant follicle is important as it may be linked to the competence of the oocyte within. The objective of this study was to analyze, by transcriptomic analysis, the changes occurring in granulosa cells from dominant follicles at different phases of follicular growth. METHODS...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-015-0010-7
更新日期:2015-03-08 00:00:00
abstract:BACKGROUND:Decidualization is a prerequisite for successful implantation and the establishment of pregnancy. A critical role of impaired decidualization in subfertility has been established. In human endometrial stromal cells (hESCs), Krüppel-like factor 12 (KLF12) and Nur77 are novel regulators of decidualization. We ...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-017-0243-8
更新日期:2017-03-31 00:00:00
abstract:BACKGROUND:Coordinated differentiation of the endometrial compartments in the second half of the menstrual cycle is a prerequisite for the establishment of pregnancy. Endometrial stromal cells (ESC) decidualize under the influence of ovarian progesterone to accommodate implantation of the blastocyst and support establi...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-7-76
更新日期:2009-07-20 00:00:00
abstract:BACKGROUND:Considering that clinical trial studies are limited in polycystic ovary syndrome (PCOS) patients, and there is no consensus on an optimum endometrial preparation protocol for frozen embryo transfer (FET), the present study was designed as a randomized clinical trial to compare the reproductive outcomes follo...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-020-00675-z
更新日期:2020-11-20 00:00:00
abstract:BACKGROUND:The cell membrane water channel protein, aquaporins (AQPs), regulate cellular water transport and cell volume and play a key role in water homeostasis. Recently, AQPs are considered as important players in the field of reproduction. In previous studies, we have established the presence of AQP1 and 5 in porci...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-015-0004-5
更新日期:2015-02-18 00:00:00
abstract::Although much is known about the reproductive biology of pond-breeding frogs, there is comparatively little information about terrestrial-breeding anurans, a highly successful and diverse group. This study investigates the activation and in vitro fertilization of eggs of the Puerto Rican coqui frog obtained by hormona...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-2-60
更新日期:2004-08-05 00:00:00
abstract:BACKGROUND:Human uterine leiomyoma (fibroids; LYO) are the most common benign neoplasms in reproductive-aged women. Dysregulated extracellular matrix and irregular LYO reversion-inducing cysteine-rich protein with Kazal motifs (RECK) expression are thought to be mediated by aberrant microRNA (miR) expression. The relat...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-016-0180-y
更新日期:2016-08-17 00:00:00
abstract::A recent reassessment of the phylogenetic affinities of cetaceans makes it timely to compare their placentation with that of the artiodactyls. We studied the placentae of two sympatric species of dolphin from the Amazon River Basin, representing two distinct families. The umbilical cord branched to supply a bilobed al...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-5-26
更新日期:2007-06-28 00:00:00
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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:This study was designed to determine whether small diameter needles for oocyte retrieval alter oocyte yields in patients undergoing IVF in comparison to standard large diameter needles. METHODS:We conducted a prospective pilot study of 21 consecutive favorable prognosis patients. In each patient one ovary w...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章,随机对照试验
doi:10.1186/1477-7827-11-22
更新日期:2013-03-20 00:00:00
abstract:BACKGROUND:There is limited literature investigating the effects of body mass index (BMI) and androgen level on in vitro fertilization (IVF) outcomes with a gonadotropin-releasing hormone (GnRH)-antagonist protocol in polycystic ovary syndrome (PCOS). Androgen-related variation in the effect of body mass index (BMI) on...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-018-0438-7
更新日期:2018-11-19 00:00:00
abstract:BACKGROUND:The objective of this study was to identify substantially increased proteins in bovine cystic follicular fluid (FF) in order to clarify the pathology and etiology of bovine ovarian follicular cysts (BOFC). METHODS:Proteins in normal and cystic FF samples were subjected to two-dimensional polyacrylamide gel ...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-3-23
更新日期:2005-06-08 00:00:00
abstract::Human embryonic stem cells (hESC) have emerged as attractive candidates for cell-based therapies that are capable of restoring lost cell and tissue function. These unique cells are able to self-renew indefinitely and have the capacity to differentiate in to all three germ layers (ectoderm, endoderm and mesoderm). Harn...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 历史文章,杂志文章,评审
doi:10.1186/s12958-015-0005-4
更新日期:2015-02-22 00:00:00
abstract:BACKGROUND:Endometriosis is an estrogen dependent, inflammatory disorder occurring in 5-10% of reproductive-aged women. Women with endometriosis have a lower body mass index (BMI) and decreased body fat compared to those without the disease, yet few studies have focused on the metabolic abnormalities in adipose tissue ...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-019-0480-0
更新日期:2019-04-15 00:00:00
abstract:BACKGROUND:Oocyte donation is a medical technique used principally for woman with ovarian failure. Optimizing donor recruitment is essential to obtain the best results with this technique. Understanding how donor parameters influence outcome for the recipients is fundamental. The aim of this study was to determine whet...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-016-0138-0
更新日期:2016-01-19 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::A majority of common metabolic diseases can result in excessive lipolysis, leading to elevated levels of non-esterified fatty acids (NEFAs) in the body fluids. In females, increased NEFA levels in the follicular fluid markedly alter the functions of intrafollicular cells such as granulosa cells (GCs) and oocytes. Ther...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章,评审
doi:10.1186/s12958-020-00617-9
更新日期:2020-06-06 00:00:00
abstract:BACKGROUND:Morphometric and morphokinetic evaluation of in vitro cultured human embryos allows evaluation without time restriction and reduces intra- and inter-observer variability. Even though these technologies have been reported to improve the quality of cleavage stage embryo evaluation during fresh culture, possibl...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/s12958-017-0299-5
更新日期:2017-10-03 00:00:00
abstract:BACKGROUND:Endocannabinoids (ECs) are important contributors to implantation and decidualization and are suppressed in early pregnancy. Elevated levels of anandamide (AEA), the endogenous ligand for the CB1 and CB2 receptors (R), interfere with receptivity of the blastocyst. Ang-(1-7) is down-regulated in the implantat...
journal_title:Reproductive biology and endocrinology : RB&E
pub_type: 杂志文章
doi:10.1186/1477-7827-13-5
更新日期:2015-01-17 00:00:00