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Open Journal of Pathology 2022年第1期12卷 31-36页

作者： simon azonbakin Daniel Sewadouno Maroufou Jules Alao Anatole Lalèyè Service d’Histologie Biologie de la reproduction Cytogénétique et Génétique Médicale Faculté des Sciences de la Santé Université d’Abomey-Calavi Abomey-Calavi Benin Service de Pédiatrie CHU de la Mère et de l’Enfant-Lagune de Cotonou Cotonou Benin

Diabetes in pregnant women could be source of morbidity and mortality if management was not optimal. One of the main complications of diabetes in pregnant women is birth defects. They have an estimated prevalence of 1.5%. They can be isolated or associated to other malformations. Prevention includes systematic screening when monitoring pregnancies, in particular carrying out morphological obstetrical ultrasounds. A case of limb malformation secondary to unbalanced maternal diabetes and absence of prenatal diagnosis despite the high number of ultrasounds that have been performed is reported here. This situation requests more attention to the quality of antenatal ultrasounds caregiving in developing countries.

关键词： Congenital Limb Malformation Diabetes

Assessment of Spermatic Chromatin Decondensation by the Toluidine Blue Assay in Infertile Patients in Cotonou

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Advances in Reproductive Sciences 2022年第2期10卷 37-48页

作者： Yaude Alfred azonbakin simon Aweh Bruno Dangbemey Patrice Sissoko Sidi Boula Dossou Jean-Paul Flore Gangbo Laleye Anatole Laboratory of Histology Reproductive Biology Cytogenetics and Medical Genetics Faculty of Health Sciences Cotonou Benin Department of Gynaecology-Obstetrics Mother and Child Teaching Hospital of Cotonou Cotonou Benin Pathological Anatomy and Cytology Department of the point’s G Teaching Hospital in Bamako Mali Laboratory of Andrology Human Reproduction and Demography Research Center CERRHUD Cotonou Benin

Background: A high level of sperm chromatin decondensation results in loss of DNA quality and it is associated with poor embryonic prognosis in Assisted Reproductive Technology (ART). This had lead to introduction of sperm DNA compaction testing in assessment of clinical male infertility. Toluidine blue assay is one of most commonly used tests to measure chromatin decondensation in research studies and also in clinical routine use. So the objective of our study was to assess the level of sperm chromatin decondensation by toluidine blue assay in men dealing with couple infertility. Methods: The sperm samples of 96 patients referred for infertility, over a 4-month period from September 2020 to January 2021, were stained with toluidine blue and observed under an optical microscope. These were evaluated according to the World Health Organization. Results: The 25 - 34 age group was the most represented among infertile men. There was a non-significant correlation between age and the level of spermatic chromatin condensation (r = 0.0348). Spermatic parameters had averages above standards norms, apart from that of low vitality. Spermatic chromatin decondenization affected 96% of infertile patients. Asthenozoospermia was the most common abnormality. Among standard parameters of spermogram, only the concentration of spermatozoa in the semen was weakly correlated (r = 0.18) with sperm chromatin decondensation. Conclusion: The level of sperm chromatin condensation is, on the one hand, a parameter independent of the age of the subject; on the other hand, allows to evaluate male infertility, like the classic parameters of the spermogram and spermocytogram. However, in view of the high probability of changes in the nuclear quality of sperm intrinsic to the analysis process and sperm concentration, an improvement of the toluidine blue test using the swim-up technique and associated with image processing software is possible.

关键词： Male Infertility Decondensation Spermatic Chromatin Toluidine Blue

Chromosome Polymorphism and Human Pathology: About 27 Cases of Chromosome 9 Inversion in the Beninese Population

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Open Journal of Genetics 2021年第3期11卷 23-31页

作者： simon azonbakin Alfred Ouedraogo Alexis Ouedraogo Daniel Sewadouno Arnaud Agbanlinsou Yannick Goussanou Marius Adjagba Jules Alao Anatole Laleye Laboratory of Histology-Reproductive Biology Cytogenetics and Medical Genetics Human Biology Unit Faculty of Health Sciences Abomey-Calavi University Cotonou Benin Laboratory of Histology-Embryology Cytogenetics and Reproductive Biology Teaching Hospital of Bogodogo Ouagadougou Burkina Faso Department of Pediatric and Medical Genetic Faculty of Health Sciences Abomey-Calavi University Cotonou Benin

The chromosomal polymorphism defined by variations of some chromosomal regions of a person (the constitutive heterochromatin and the short arms of the acrocentric chromosomes (13 to 15 and 21 - 22)) sometimes highlighted problems with regard to their safety and their pathogenicity. Polymorphisms are usually found in the same family and transmitted in the dominant Mendelian. Chromosome 9 inversion is a frequent phenomenon that some cytogeneticists consider as a variant of normal. Despite its classification as a minor chromosome rearrangement which does not correspond to abnormal phenotypes, many reports have raised conflicting opinions as well, and its complete safety is controversial. 27 cases of inversion of chromosome 9 were identified in our laboratory. The main indications for karyotype of the case of inv (9) were congenital cardiopathy (18.5%), sex development disorders of (18.5%), down syndrome (18.5%), and infertility (14.8%). This study stood out the observations of many authors who highlighted the involvement of inv (9) in the genesis of several pathologies.

关键词： Inversion Chromosome 9 Karyotype Abnormality Fertility

Epidemiology and Clinical Signs of Gynecological Cancers in an African Country South of the Sahara: Case of the Republic of Benin in 2022

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Open Journal of Obstetrics and Gynecology 2023年第12期13卷 2021-2032页

作者： Djima Patrice Dangbemey Raoul Atade Mahublo Vinadou Vodouhe Ameyo Ayoko Ketevi Samiath Bakary Ogourindé Mathieu Ogoudjobi Moufalilou Aboubakar simon azonbakin Christiane Tshabu-Aguemon Benjamin Hounkpatin Angeline Tonato-Bagnan Justin Lewis Denakpo Faculty of Health Sciences University of Abomey-Calavi Cotonou Benin Nursing and Midwifery Training Institute University of Parakou Parakou Benin Faculty of Health Sciences University of Lomé Lomé Togo

Introduction: Gynaecological cancers are the deadliest of the women’s cancers in the Republic of Benin. Late diagnosis is the most common reason. Objective: This paper aims to describe the epidemiological characteristics, and clinical and pathological signs of gynaecological cancers treated in the Republic of Benin between 2018 and 2022. Patients and Methods: This was a cross-sectional, descriptive, retrospectively collected study of patient data treated between 2018 and 2022 in two university gynaecology departments in Cotonou. All gynaecological cancers that have histological evidence were included. The epidemiological, clinical and pathological characteristics of the cancers were assessed. Results: Cervical, endometrial and ovarian cancers were the most common in the proportions of 62.0%, 24.1%, 12.0% and 1.8% respectively. The mean age at diagnosis was 54 years. The victims were uneducated and had low economic power in 81% and 85% of cases, respectively. The consultation was late in 82.1% of cases. Metrorrhagia, postmenopausal metrorrhagia and pelvic cluster headache were the common reasons for consultation for cervical, endometrial and ovarian cancer, respectively. Diagnosis was late in 66.7% (n = 71). The most common histological types were squamous cell carcinoma, endometrioid adenocarcinoma, and serous cystadenocarcinoma for cervical, endometrial, and ovarian cancers, respectively. Conclusion: Gynaecological cancers were common and their consultation time was delayed. The diagnosis was made at the advanced stage and there were several reasons for this.

关键词： Gynaecological Cancers Epidemiology Signs Benin

Chromosome Polymorphism and Human Pathology: About 27 Cases of Chromosome 9 Inversion in the Beninese Population

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Epidemiology and Clinical Signs of Gynecological Cancers in an African Country South of the Sahara: Case of the Republic of Benin in 2022

Open Journal of Genetics（遗传学期刊） 2021年第3期

作者： simon azonbakin Alfred Ouedraogo Alexis Ouedraogo Daniel Sewadouno

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