Collection, preservation, and shipment of histological specimens in low-resource settings is challenging. We present a novel method that achieved excellent preservation of placental specimens from rural Mali by using formalin fixation, ethanol dehydration, and long-term storage in a solar-powered freezer. Sample preservation success was 92%, permitting evaluation of current and past malaria infection, anemia, placental maturity, and inflammation. Using RNAscope® hybridization we were able to visualize cell-specific gene expression patterns in the formalin-fixed paraffin-embedded (FFPE) specimens. Additionally, our method entailed mirrored sampling from the two cut faces of a cotyledon, one for the FFPE workflows and the other for storage in RNAlater™ and RNA-seq.
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http://dx.doi.org/10.1080/01478885.2022.2088191 | DOI Listing |
Reprod Sci
January 2025
Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan.
Adenomyomectomy, a therapeutic option for women with adenomyosis who wish to preserve their fertility, has been reported to pose a risk of developing placenta accreta spectrum (PAS) and uterine rupture in future pregnancies. However, the specific clinical factors contributing to these occurrences remain elusive. This study aimed to explore the association between hysteroscopic findings after adenomyomectomy and the incidence of PAS in subsequent pregnancies.
View Article and Find Full Text PDFCureus
November 2024
Obstetrics and Gynecology, Kawasaki Medical School, Kurashiki, JPN.
Placenta accreta spectrum (PAS) is a life-threatening condition characterized by abnormal placental invasion of the myometrium and is often associated with uterine surgery. However, it can also occur in unscarred uteri, particularly during pregnancies using assisted reproductive technology (ART). Following a successful pregnancy via vitrified-warmed embryo transfer, a 33-year-old nulliparous woman with systemic lupus erythematosus and long-term steroid use presented with intra-abdominal hemorrhage due to placenta percreta and spontaneous uterine perforation at week 10 of gestation.
View Article and Find Full Text PDFAm J Perinatol
December 2024
Division of Minimally Invasive Gynecology, Department of Obstetrics and Gynecology, Maimonides Medical Center, Brooklyn.
Objective: In recent years, the management of placenta accreta spectrum (PAS) has fallen into two categories: planned hysterectomy and conservative management to preserve fertility. However, optimal management remains unclear. Therefore, we conducted a systematic review and meta-analysis comparing the two to evaluate which approach was associated with lower surgical morbidity.
View Article and Find Full Text PDFBiomimetics (Basel)
December 2024
Division of Endodontics, Columbia University College of Dental Medicine, New York, NY 10032, USA.
The dehydrated human amnion-chorion membranes (dHACMs) derived from the human placenta have emerged as a promising biomaterial for dental pulp regeneration owing to their unique biological and structural properties. The purpose of this review is to explore the potentials of dHACMs in dental pulp tissue engineering, focusing on their ability to promote cellular proliferation, differentiation, angiogenesis, and neurogenesis. dHACMs are rich in extracellular matrix proteins and growth factors such as TGF-β1, FGF2, and VEGF.
View Article and Find Full Text PDFPlacenta
December 2024
Ankara Etlik Lady Zübeyde Women's Health Training and Research Hospital, Department of Obstetrics and Gynecology, Division of Perinatology, P.O. Box 06010, New Etlik Street No:55 Etlik, Keçiören, Ankara, Turkey. Electronic address:
Introduction: Prenatal determination of placenta accreta spectrum (PAS) and its severity is crucial, as it is a highly morbid condition. The aim was to investigate the intraplacental fetal artery (IFA) as a novel ultrasonographic marker in predicting cesarean-hysterectomy need in PAS.
Methods: A prospective observational cohort study was conducted with a total of 62 women with placenta previa and ≥1 previous cesarean-section who were managed for PAS between September 2022 and January 2024.
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