Ralf Dittrich

BACKGROUND: Ovarian insufficiency is a major concern for long-term cancer survivors. Ovarian tissue cryopreservation for fertility preservation is an emerging technique that has proven successful over the past decade through transplantation…

INTRODUCTION: Cryopreservation of ovarian tissue with subsequent transplantation is an efficient option for restoring fertility in women at risk of premature ovarian failure. The association between infertility and endometriosis is well rec…

Background Ovarian insufficiency is a concern for long-term cancer survivors. Ovarian-cryopreservation is a fertility preservation-technique through transplantation of frozen-thawed tissue; actual organ function and hormonal production is p…

Introduction Ovarian-cryopreservation with subsequent transplantation is a restoring fertility option in women at risk of premature ovarian-failure. The association between infertility and endometriosis is well known. Although endometriosis…

OBJECTIVE: This study aimed to provide an overview of the extent to which women with endometriosis are informed about, interested in, and make use of CAM, and to evaluate which of the methods are most often applied. STUDY DESIGN: A retrosp…

Embryo implantation is a complex process in which multiple molecules acting together under strict regulation. Studies showed the production of various adipokines and their receptors in the embryo and uterus, where they can influence the mat…

Introduction Supporting and counselling couples with fertility issues prior to starting ART is a multidisciplinary diagnostic and therapeutic challenge. The first German/Austrian/Swiss interdisciplinary S2k guideline on "Diagnosis and Thera…

Extraction of ovarian tissue prior to oncologic therapy and subsequent transplantation is being performed increasingly often to preserve fertility in women. The procedure can be performed at any time of the cycle and, therefore, generally d…

INTRODUCTION: Endometriosis is associated with hyperperistalsis and dysperistalsis in the uterus, and it has been shown that progesterone leads to a decrease in uterine contractility. The synthetic gestagen dienogest is often administered i…

Controversial studies have suggested that impaired oocyte quality may be involved in the pathogenesis of endometriosis-related infertility. Up to now, no study has evaluated the effect of oocyte quality with a zygote score from infertile wo…

BACKGROUND: Local anesthetics (LAs) are increasingly used as therapeutics due to their multiple molecular effects. They may be potential agents also in gynecology and reproductive medicine. The objective of this study was to investigate the…

BACKGROUND: Little information is available concerning antioxidant effects of plant teas (water boiled) which are used more commonly in traditional Chinese medicine than other extracts. Thus, we addressed this issue by evaluating the abilit…

Background: The aim of this study was to evaluate how many embryos will develop if more than 3 2-pronuclei-stage oocytes (2-PNOs) are cultured at the patient's request and in accordance with the Germany Embryo Protection Law. Methods: A tot…

BACKGROUND: It has previously been shown that the viability of swine uteri can be maintained within the physiological range in an open perfusion model for up to 8 hours. The aim of this study was to assess medium- to long-term perfusion of …

OBJECTIVE: To compare high-sensitivity C-reactive protein (hs-CRP) with CRP as a soluble serum marker for the diagnosis of women with endometriosis. DESIGN: Prospective nonrandomized controlled trial (Canadian Task Force classification II-…

Fragestellung: Vergleich von hochsensitivem CRP (hs-CRP) und CRP als möglicher diagnostischer Serum-Marker bei Endometriosepatientinnen. Untersucht wurde weiterhin, ob eine Korellation von hs-CRP und CRP zum Stadium der Erkrankung besteht. …

OBJECTIVE: The objective of the present study was to evaluate the correlation between anti-müllerian hormone (AMH), inhibin B, and activin A in follicular fluid from patients receiving treatment with in-vitro fertilization (IVF) and intracy…

BACKGROUND: Adequate uterine contractility and peristalsis are involved in the transport of semen and gametes and in successful embryo implantation. Estrogen and progesterone fluctuate characteristically during the menstrual cycle. It has b…