Zobrazeno 1 - 10
of 116
pro vyhledávání: '"Georgi Stamenov"'
Autor:
Maria Handzhiyska, Rumiana Ganeva, Dimitar Parvanov, Margarita Ruseva, Petar Eftimov, Vilyana Georgieva, Denitsa Velikova, Georgi Stamenov
Publikováno v:
Reproduction and Fertility, Vol 5, Iss 2, Pp 1-9 (2024)
The objective of this study was to compare the motility, morphology, and levels of DNA fragmentation of spermatozoa subjected to conventional swim-up or cumulus matrix (CM) sperm selection. Semen samples were collected from 60 normozoospermic men at
Externí odkaz:
https://doaj.org/article/581a8763bb284a32bf0b17ddb7ce0036
Autor:
Dimitar Metodiev, Dimitar Parvanov, Margarita Ruseva, Rumiana Ganeva, Maria Handzhiyska, Nina Vidolova, Ani Chavoushian, Savina Hadjidekova, Georgi Stamenov
Publikováno v:
Diagnostics, Vol 14, Iss 15, p 1642 (2024)
Adenomyosis and endometriosis are distinct gynecological disorders characterized by ectopic growth of endometrial tissue. Their etiology remains unclear, but stem cells have been implicated in both. The aim of this study was to investigate and compar
Externí odkaz:
https://doaj.org/article/eada66cfd6304df79a83dde7feee063e
Autor:
Dimitar Parvanov, Rumiana Ganeva, Margarita Ruseva, Maria Handzhiyska, Teodora Tihomirova, Stela Chapanova, Rada Staneva, Blaga Rukova, Maria Pancheva, Maria Serafimova, Dimitar Metodiev, Georgi Stamenov, Savina Hadjidekova
Publikováno v:
Biotechnology & Biotechnological Equipment, Vol 37, Iss 1 (2023)
AbstractThe aim of this prospective study was to compare the endometrial microbiome between pregnant and non-pregnant women after frozen embryo transfer (FET) with euploid embryos. Endometrial biopsies were collected from 30 women during the mid-lute
Externí odkaz:
https://doaj.org/article/4b8998654a604c2fa35289529754e0a6
Autor:
Dimitar Parvanov, Rumiana Ganeva, Nina Vidolova, Kristina Nikolova, Magdalena Vasileva, Tihomir Totev, Georgi Stamenov
Publikováno v:
Biotechnology & Biotechnological Equipment, Vol 36, Iss 1, Pp 425-432 (2022)
AbstractPlatelet-rich plasma (PRP) is used for successful regeneration of female reproductive tissues. However, little is known about the effect of ovarian PRP treatment on oocyte and embryo quality. The objective of our study was to assess the role
Externí odkaz:
https://doaj.org/article/980c0a4a7f4f4f4da6d093d4a9c89433
Autor:
Dimitar Metodiev, Margarita Ruseva, Dimitar Parvanov, Rumiana Ganeva, Maria Handzhiyska, Nina Vidolova, Georgi Stamenov
Publikováno v:
Clinics and Practice, Vol 12, Iss 4, Pp 579-590 (2022)
It is an acknowledged fact that SARS-CoV-2 exhibits tropism for the human placenta. A possible mechanism of SARS-CoV-2 entry into host cells is via angiotensin-converting enzyme 2 (ACE2) receptors, which are expressed in trophoblasts, endothelial cel
Externí odkaz:
https://doaj.org/article/9226026584a74f709e99fc2de0260671
Autor:
Rumiana Ganeva, Dimitar Parvanov, Denitsa Velikova, Magdalena Vasileva, Kristina Nikolova, Georgi Stamenov
Publikováno v:
Reproduction and Fertility, Vol 2, Iss 3, Pp 221-230 (2021)
Sperm DNA fragmentation (SDF) and sperm morphological defects can negatively affect ART outcomes. Consequently, there is a need for additional semen processing technique that accounts for sperm DNA status and morphology prior to ICSI. The objective w
Externí odkaz:
https://doaj.org/article/2c9135bdb87b4019a66ac97a3c65d212
Publikováno v:
Journal of IMAB, Vol 26, Iss 4, Pp 3387-3389 (2020)
Purpose: To define the frequency, significant factors and causes that necessitated peripartum hysterectomies. Material and Methods: We studied retrospectively and prospectively 21 patients who underwent peripartum hysterectomies at “Nadezhda” Wo
Externí odkaz:
https://doaj.org/article/fe987f1c524447f7a1b1dd9028f40d2a
Autor:
Slavyana Yaneva Staykova, Rada Staneva, Georgi Stamenov, Maria Pancheva, Maria Serafimova, Kristina Nikolova, Draga Toncheva, Savina Hadjidekova
Publikováno v:
Biotechnology & Biotechnological Equipment, Vol 33, Iss 1, Pp 1663-1670 (2019)
Preimplantation genetic testing (PGT) is presently the only option available for detecting genetic conditions in embryos created through in vitro fertilization (IVF) prior to implantation. Thus PGT eliminates the dilemma of pregnancy termination foll
Externí odkaz:
https://doaj.org/article/5ab70d615e1c4f49a87f19d3a1a290f3
Publikováno v:
Case Reports in Obstetrics and Gynecology, Vol 2018 (2018)
The process of embryo implantation is carried out during the receptive stage of the endometrium in the midluteal phase of the menstrual cycle, known as window of implantation (WOI). It has been assumed that the WOI is not a constant variable in all w
Externí odkaz:
https://doaj.org/article/d029b80f27a5496d8c37dc5faea5f4d0
Autor:
Georgi Stamenov, Dimitar Parvanov, Todor Chaushev, Daniela Baltadzhieva, Ilia Iliev, Balik Dzhambazov
Publikováno v:
Journal of BioScience and Biotechnology, Vol 2, Iss 2, Pp 79-88 (2013)
Optimization of assisted reproductive technologies (ART) has become the main goal of contemporary reproductive medicine. The main aspiration of scientists working in the field is to use less intervention to achieve more, and, if possible, in a more c
Externí odkaz:
https://doaj.org/article/88a2c77b7e2c484781e6e4c9f92b0645