Samira Abdel Abdel Azim

Dr. Samira Abdel Abdel Azim

orcid

Research Focus & Metrics

Academic Career Length

11Years (2016-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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15 February 2016 in BMC Cancer
Verified
Journal Article
Open access
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GSGabriel Schmid
Gabriel Schmid
SNSara Notaro
Sara Notaro
Daniel U. ReimerDaniel U. Reimer
Daniel U. Reimer
SASamira Abdel Abdel Azim
Samira Abdel Abdel Azim
MDMichaela Duggan-Peer
Michaela Duggan-Peer
AZAlain Gustave Zeimet
Alain Gustave Zeimet
An increasing body of evidence shows that miR-34 family has tumor suppressive properties mediating apoptosis, cell cycle arrest and senescence. In ovarian cancer, miR34 family members were found to be under expressed. Particularly miR-34a has been revealed to be a direct transcriptional target of p53 which is frequently mutated in epithelial ovarian carcinomas especially in high grade serous cancer. Moreover, methylation of miR-34a CpG Islands was found to down-regulate miR-34a expression. The aim of this study was to investigate the clinical relevance of mir34a as well as its promoter methylation in a subset of 133 ovarian cancers with a special focus on the p53 mutation status, the dualistic type I and type II ovarian cancer model and the different histotypes. One hundred thirty-three epithelial ovarian cancers and 8 samples of healthy ovarian surface epithelium were retrospectively analysed for miR-34a expression with quantitative real-time reverse transcription PCR (qRT-PCR). Gene-specific DNA methylation was evaluated with MethyLight technique. Significantly lower miR-34a expression was found in ovarian cancers than in healthy ovarian epithelium (p = 0.002). The expression of miR-34a was found lower in type II than in type I cancers (p = 0.037), in p53 mutated as compared to p53 wild type cancers (p = 0.003) and in high grade compared to in low grade cancers (p = 0.028). In multivariate COX regression model low expressing miR-34a cancers exhibited a reduced PFS (p = 0.039) and OS (p = 0.018). In serous cancers low miR-34a levels showed a worse OS confirmed also in multivariate analysis (p = 0.022). miR-34a promoter methylation was found higher in type II cancers than in type I (p = 0.006). mir34a expression and promoter methylation showed an inverse correlation in cancer samples (p = 0.05). We demonstrated a clinical independent role of miR-34a in epithelial ovarian cancers. Moreover, we corroborated the correlation between miR-34a expression and its promoter methylation in a large set of ovarian cancers. The inverse association between miR-34a expression and grading, p53 mutation status and dualistic tumor type classification, together with its prognostic relevance may underline the tumor-suppressive character of miR-34a in ovarian cancer.

12 June 2020 in Ultrasound in Obstetrics & Gynecology
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Journal Article
Closed access
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JAJ. Aguilera
J. Aguilera
ASA. Sanchez Sierra
A. Sanchez Sierra
SASamira Abdel Abdel Azim
Samira Abdel Abdel Azim
GGG. Georgiopoulos
G. Georgiopoulos
KNKypros Herodotos Nicolaides
Kypros Herodotos Nicolaides
MCM. Charakida
M. Charakida

8 January 2022 in Ultrasound in Obstetrics & Gynecology
Verified
Journal Article
Closed access
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SASamira Abdel Abdel Azim
Samira Abdel Abdel Azim
MSM. Sarno
M. Sarno
AWA. Wright
A. Wright
NVN. Vieira
N. Vieira
MCM. Charakida
M. Charakida
KNKypros Herodotos Nicolaides
Kypros Herodotos Nicolaides

3 June 2022 in Ultrasound in Obstetrics & Gynecology
Verified
Journal Article
Closed access
SASamira Abdel Abdel Azim
Samira Abdel Abdel Azim
AWA. Wright
A. Wright
ISI. Sapantzoglou
I. Sapantzoglou
KNK. H. Nicolaides
K. H. Nicolaides
MCM. Charakida
M. Charakida

16 December 2020 in Gynecologic and Obstetric Investigation
Verified
Journal Article
Closed access
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SASamira Abdel Abdel Azim
Samira Abdel Abdel Azim
VWVerena Wieser
Verena Wieser
MRMagdalena Ritter
Magdalena Ritter
JTJohanna Tiechl
Johanna Tiechl
SKStephan Kropshofer
Stephan Kropshofer
SFSiegfried Fessler
Siegfried Fessler
Background: In high-risk patients with cervical incompetence, laparoscopic cerclage is a promising treatment option. However, the procedure exhibits relevant surgical risks. Aims: The purpose of this study was to evaluate a surgical “needle-free” technique for minimally invasive, laparoscopically placed cervico-isthmic cerclage in high-risk patients. Methods: This was a retrospective observational study over a 10-year period of pre- and postconceptional cerclage placement. The included patients either experienced previous transvaginal cerclage (TVC) failure or were not eligible for TVC. Laparoscopic transabdominal cerclage using a needle-less mersilene tape was performed via a broad ligament window lateral to the uterine vessels. Results: Laparoscopic transabdominal cerclage was successfully performed in all included women with a median operation time of 62 min. We did not observe any intra- or postoperative complications, particularly no bleeding complications. Nine of 11 women became pregnant and/or carried out a successful pregnancy, respectively. Importantly, we did not observe any cases of miscarriage or mid-trimester loss. Two patients did not conceive; however, their medical histories did include Asherman’s syndrome and advanced maternal age. Conclusion: Transabdominal laparoscopic “needle-free” cerclage is a safe and effective treatment option for a well-selected group of women at high risk of cervical incompetence. It provides good obstetric results without increasing perioperative morbidity.

1 February 2023 in International Journal of Gynecology & Obstetrics
Verified
Journal Article
Open access
CDChristine Degasper
Christine Degasper
LSLaura Späth
Laura Späth
SFSiegfried Fessler
Siegfried Fessler
AWAndreas Widschwendter
Andreas Widschwendter
SASamira Abdel Abdel Azim
Samira Abdel Abdel Azim
MRMagdalena Ritter
Magdalena Ritter
ObjectiveTo create a reference curve for postvoid residual volume (PVRV) in asymptomatic postpartum women who are at low risk of developing postpartum urinary retention (PUR), a well-known complication in the immediate postpartum period. MethodsThis is a prospective observational study measuring PVRV after uncomplicated vaginal delivery. PVRV was assessed by transabdominal ultrasound using a portable ultrasound scanner within the first 26 h after delivery (PVRV 1) and on the day of discharge (day 2 or 3 postpartum) (PVRV 2). A PVRV of 150 mL or more was defined as the cut-off value for covert PUR. ResultsThe prevalence of covert PUR was 7.1%. Primiparity, duration of second stage, and obstetric injury were correlated with higher PVRV 1. The median PVRV 1 was 21 mL and PVRV 2 was 11 mL. The subgroup of nulliparous women had a significantly higher PVRV 1 compared with multiparous women. At discharge, the majority (99.1%) of women had a PVRV of less than 150 mL. ConclusionAsymptomatic women were at low risk of developing PUR. However, women with a prolonged second stage may benefit from a routine postpartum assessment. Our results allow for a better understanding of PVRV in the early postpartum period.