36 research outputs found
Stress relief to augment fertility: the pressure mounts
Current studies have not conclusively demonstrated an objective and consistent marker of an aberrant stress response; an effect of such a stress response on reproductive outcome; or a benefit of counseling on reproductive outcome in such patients
The Evolution of in Vitro Fertilization: Integration of Pharmacology, Technology, and Clinical Care
ABSTRACT For the couple having trouble achieving pregnancy, the options and opportunities for assistance have never been brighter. Options such as controlled ovarian hyperstimulation, in vitro fertilization, and intracytoplasmic sperm injection have been developed over the past five decades and provide hope for couples that previously would have been considered infertile. In vitro fertilization and intracytoplasmic sperm injection represent a coalescence of advances in physiology, endocrinology, pharmacology, technology, and clinical care. In vitro fertilization has assisted well over one million couples in their efforts to start or build a family, and the demand for such services continues to increase. The purpose of this manuscript is to review the pharmacological advances that made controlled ovarian hyperstimulation, and therefore in vitro fertilization and intracytoplasmic sperm injection, possible. We will discuss the early stages of gonadotropin use to stimulate ovarian production of multiple mature eggs, the advances in recombinant technology that allowed purified hormone for therapy, and the use of other hormones to regulate the menstrual cycle such that the likelihood of successful oocyte retrieval and embryo implantation is optimized. Finally, we will review current areas that require particular attention if we are to provide more opportunity for infertile couples. Controlled ovarian hyperstimulation (COH), in vitro fertilization (IVF), and intracytoplasmic sperm injection have become the standard of care for many couples with infertility. The combination of pharmacologic and surgical manipulation of the menstrual cycle is the key to improving pregnancy rates. The history and evolution of COH, IVF, and intracytoplasmic sperm injection has been rapidly developing and continues to change at an ever increasing pace In a typical menstrual cycle, there is the formation of a single dominant follicle, from which ovulation of a single oocyte occurs each month. For the fertile couple, this menstrual cycle has a 20% chance of resulting in a pregnancy; however, for infertile couples, the chance of pregnancy with one oocyte can be well under 5% per cycle. Over the past 50 years, pharmacologic agents have been developed to increase the likelihood of pregnancy by increasing the number of eggs released and available for fertilization. To clarify the obstacles to fertility that have been overcome as well as the challenges that remain, we will review the physiology of the menstrual cycle, major historical developments, and the therapeutic evolution and current use of medications used during controlled ovarian hyperstimulation and in vitro fertilization. This review, by design, will be a brief overview. Those Article, publication date, and citation information can be found a
Vitamin D: Mechanism of Action and Biological Effects in Uterine Fibroids
Uterine fibroids (UFs) are the most common benign gynecological tumors. It was estimated that fifty percent of women presenting with UFs has symptomatology that negatively influences their quality of life. Pharmacological and/or surgical treatments are frequently required, depending on the woman’s desire to preserve fertility, with a high impact on healthcare costs. Generally, the use of currently available pharmacological treatments may lead to side effects. Therefore, there is a growing interest in a natural and safe approach for UFs. In recent years, epidemiological studies reported a vitamin D deficiency in patients with UFs raised interest in the potential biological effects of vitamin D supplementation. In vitro studies proved vitamin D efficacy in inhibiting UFs growth by targeting pathways involved in the regulation of various biological processes, including proliferation, extracellular matrix (ECM) remodeling, DNA repair, signaling and apoptosis. However, clinical studies supported only in part the beneficial effects of vitamin D supplementation in reducing UFs growth and tumor volume. Randomized controlled trials and large population studies are mandatory as the potential clinical benefits are likely to be substantial
A Comprehensive Review of the Pharmacologic Management of Uterine Leiomyoma
Uterine leiomyomata are the most common benign tumors of the gynecologic tract impacting up to 80% of women by 50 years of age. It is well established that these tumors are the leading cause for hysterectomy with an estimated total financial burden greater than $30 billion per year in the United States. However, for the woman who desires future fertility or is a poor surgical candidate, definitive management with hysterectomy is not an optimal management plan. Typical gynecologic symptoms of leiomyoma include infertility, abnormal uterine bleeding (AUB)/heavy menstrual bleeding (HMB) and/or intermenstrual bleeding (IMB) with resulting iron-deficiency anemia, pelvic pressure and pain, urinary incontinence, and dysmenorrhea. The morbidity caused by these tumors is directly attributable to increases in tumor burden. Interestingly, leiomyoma cells within a tumor do not rapidly proliferate, but rather the increase in tumor size is secondary to production of an excessive, stable, and aberrant extracellular matrix (ECM) made of disorganized collagens and proteoglycans. As a result, medical management should induce leiomyoma cells toward dissolution of the extracellular matrix, as well as halting or inhibiting cellular proliferation. Herein, we review the current literature regarding the medical management of uterine leiomyoma
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Laparoscopic Intracapsular Myomectomy in Women 40 Years Old and Over with Symptomatic Uterine Fibroids. A Pilot Study
Abstract
Authors evaluated the impact of laparoscopic intracapsular myomectomy (LIM) in women 40 years of age and over with desire of future fertility compared with medical management of symptomatic fibroids, by a prospective cohort study in University affiliated Hospitals. This study includes a cohort of women 40 years of age and older with symptomatic intramural fibroids with desire of future fertility. Women with symptomatic fibroid uterus were offered to undergo LIM or medical management. They were encouraged to attempt conception either spontaneously or by assisted reproductive technology (ART) according to their individual preference. All women were followed for 2 years. Fibroid characteristics, pre- and post-surgical variables, including surgical complications, days of hospitalization, pregnancy rate, and obstetrical outcomes were collected. A total of 100 patient were included in the analysis. Fifty patients were assigned to the LIM group and 50 to the medical treatment group (MT). Groups were similar regarding age (43.5 ± 2.4 and 43.5 ± 2.4,
p
= 0.99), body mass index (23.8 ± 3.1 and 24.2 ± 3.1,
p
= 0.54), parity (0.46 ± 0.09 and 0.58 ± 0.09,
p
= 0.37), fibroid number (1.38 ± 0.6 and 1.46 ± 0.6,
p
= 0.53), and fibroid size (5.92 ± 1.62 cm vs. 5.94 ± 1.49 cm,
p
= 0.949). Of the patients who underwent LIM, 62% conceived within the study period compared with 56% in the control group (
p
= 0.54). Pregnancy was achieved by ART in 44% of the patients of the LIM group and 30% in control group. There was no significant difference in pregnancy rates among the two groups regarding spontaneous pregnancy rate (
p
= 0.332), nor in pregnancies obtained by ART with own eggs (
p
= 0.146) and oocyte or embryo donation (
p
= 0.821). The take home baby rate was 65% (20/31) in the LIM group and 61% (17/28) in the control group (
p
= 0.7851). Both groups had similar rate of miscarriage (
p
= 0.748).
Patients 40 years old and over with symptomatic fibroid uterus who undergo LIM have similar subsequent fertility and obstetrical outcomes than women treated with medical management. LIM has no detrimental impact on future fertility in women 40 years old and over
Comparative ultrastructure of collagen fibrils in uterine leiomyomas and normal myometrium
Objective: To examine the ultrastructural characteristics of extracellular matrix and mature collagen fibrils in uterine leiomyomas and compare them with those in adjacent normal myometrium. Design: Analysis of paired leiomyoma-myometrium in surgical specimens. Result(s): Observation of specimens at ϫ12,500 magnification indicated that collagen fibrils were more abundant, loosely packed, and arrayed in a nonparallel manner in leiomyomas compared with myometrium. Random areas were examined at ϫ6,500 to ϫ64,000 magnification and revealed collagen fibrils of equal diameter in both leiomyomas and myometrium. However, an ordered and regular barbed appearance was present in collagen fibrils from myometrium but was lacking in leiomyomas. Conclusion(s): Leiomyomas contain an abnormal collagen fibril structure and orientation, which suggests that the well-regulated fibril formation in myometrium is altered in leiomyomas. Alterations in collagen genes may play a role in the pathogenesis of leiomyomas. (Fertil Steril 2004;82(Suppl 3):118282(Suppl 3): -118