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Profile of Autoantibodies and Clinical Symptoms in Guinean Patients with Connective Tissue Diseases

Open Journal of Immunology 2024年第1期14卷 1-10页

作者： Mariama Sadjo Diallo Doufin Traore Adame Diouf Djiba Kaba Issiaga Diallo Doudou Georges Massar Niang Alimou Camara Oumar Mouctar Diallo Boh Fanta Diane Abdoulaye Barry Ouo-Ouo Yaramon Kolie moustapha Mbow Aly Badra Kamissoko Djibril Sylla Babacar Mbengue Mohamed cisse Faculté des Sciences et Techniques de la Santé Université Gamal Abdel Nasser de Conakry Conakry Guinée Laboratoire de Biologie Moléculaire Nestor BANGOURA/Helene LABROUSSE H&#244pital de jour Donka CHU Donka Conakry Guinée Centre d’Excellence Africain Pour la Prévention et le Contrô le des Maladies Transmissibles Conakry Guinée Laboratoire d’Immunologie Université Cheikh Anta Diop Dakar Sénégal Service de Dermatologie-Vénérologie CHU Donka Conakry Guinée Service de Rhumatologie H&#244pital National Ignace Deen Conakry Guinée Service de Médecine Interne CHU Donka Conakry Guinée

Connective tissue diseases (CTDs) are Autoimmune diseases (AIDs) characterized by the appearance of autoantibodies, which are diagnostic markers. Investigations of these autoantibodies play a major role in the management of several autoimmune diseases. The objective of this study was to describe the profile of anti-ENA antibodies according to the clinical symptoms of mixed CTDs in Conakry teaching Hospital. We performed a cross-sectional study during six months. A total of 20 patients was recruited and we measured antibodies using the ELISA technique. The mean age of our patients was 36.5 years, with a predominance of females. Cutaneous and rheumatological signs were the main clinical manifestations. SLP was the most frequent CTDs;the threshold of ENA antibodies positivity was higher in scleroderma with and SLP. Anti-ENA identification reveals the frequency of anti-SSA (83.33%), anti-U1RNP (66.66%) and anti-histone (50%) antibodies. Antinuclear antibodies (ANA) react with various components of the cell nucleus. Their detection is of major interest in the diagnosis of CTDs. Our results highlight the importance of determining the specificity of these antibodies to guide differential diagnosis.

关键词： Autoantibodies Extractible Nuclear Antigen (ENA) Connective Tissue Diseases ELISA

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Ultra-Violet (UV): A Good Bacterial Sterilizer?

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Journal of Biosciences and Medicines 2023年第2期11卷 80-85页

作者： Sira Sidibe mouhamadou moustapha Boye Maryam mouhamadou Ali Traore Biomedical Engineering Department Polytechnical University of West Africa Dakar Senegal Laboratory of Fundamental and Applied Microbiology University Cheikh Anta Diop Dakar Senegal

Introduction: The aim of this study was to improve the DISTER-UV and to perform microbiological quality control at the biomedical laboratory of the West African Polytechnic University from January 2022 to November 2022. Methodology: During this eleven-month prospective study, we set up a quality control device (QCD). For microbiological quality control, we performed different cultures of bacteria with different bacteriological and morphological characteristics at T0 (no sterilization) and at T30 (after 30 minutes of sterilization under DISTER-UV). Results: After the realization, the DCQ attached to the DISTER-UV1 allows to display of the UV wavelength present in the light box. This device also displays and alerts when the UV intensity emitted by the lamps is below 250 nm. During microbiological quality control, the cultures carried out at T30 and incubated for 24 hours did not reveal any bacterial colonies. This shows the bactericidal character of DISTER-UV-2. Conclusion: The improvement and the microbiological quality control allowed us to switch from DISTER-UV1 (without sensor) to DISTER-UV-2 (with sensor or DCQ). The biological control allowed us to affirm that the DISTER-UV-2 is bactericidal.

关键词： Sterilization Ultraviolet Radiation Bactericide Quality Control Bacteria

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White Blood Cells Detection Using Spectral Tresholding

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Journal of Signal and Information Processing 2023年第1期14卷 1-8页

作者： Kamara Ndèye Lama Boye mouhamadou moustapha Traore Ali Biomedical Engineering Department Polytechnical University of West Africa Dakar Senegal Laboratory of Fundamental and Applied Microbiology University Cheikh Anta Diop Dakar Senegal

The study of the morphology of White Blood Cells (WBCs) further contributes to the clinical diagnosis of blood diseases. In this research paper, we come up with an image segmentation enhancement by combining Fourier Fast Transform on smear blood capture and classical thresholding. The Fast Fourier Transform (FFT) is a very powerful tool in image processing and it was used to segment and extract the WBCs. Our image processing method uses a Fast Fourier Transform combined with filtering and an Inverse Fast Fourier Transform for the extraction and visualization of the high frequency region of the image. In order to remove residual Red Blood Cells acting as noise in the expected result, a final thresholding step is added at the end of the processing. The results presented in this article report the tests performed using our mathematical implementation. Moreover, we were able to detect and differentiate the sub-families of WBCs.

关键词： Segmentation Fourier Transform White Blood Cell

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High Blood Pressure and Pregnancy: Epidemiological, Diagnostic, Therapeutic and Prognostic Aspects at the Maternity Unit of the Institute of Social Hygiene of Dakar (Senegal)

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Advances in Reproductive Sciences 2023年第4期11卷 140-150页

作者： mouhamadou Mansour Niang Fatou Samb Kevin Nkondjio Cheikh Tidiane cisse Gynecology-Obstetrics Department Hospital Institute of Social Hygiene of Dakar Dakar Senegal

Objectives: To specify the epidemiological and clinical profile of the patients, to determine the methods of management and to evaluate the maternal and perinatal prognosis in the association of arterial hypertension and pregnancy (HTA) at the Institute of Social Hygiene of Dakar. Material and Methods: This was a retrospective, descriptive and analytical study on the management of the association of hypertension and pregnancy in the maternity ward of the Institute of Social Hygiene of Dakar between January 1st, 2019 and on December 31st, 2020. Results: During the study period, we recorded 326 cases of hypertension associated with pregnancy among the 4290 pregnant women, i.e. a frequency of 7.6%. The epidemiological profile of the patients was that of a woman with an average age of 29, nulliparous (48.2%), married (99.1%), at a low socioeconomic level (61.3%) and with a personal history preeclampsia (14.4%). Most patients (83.1%) were evacuated or referred with pre-ec- lampsia as the main reason (40.8%). The average gestational age was 37 weeks of amenorrhea (SA) with extremes of 20 SA 6 days and 41 SA 5 days. Term pregnancies were the most represented (76.7%). Prenatal follow-up (CPN) was carried out in 319 patients (97.8%) with an average number of CPN of 3 and extremes of 1 and 9. Severe diastolic and severe systolic hypertension concerned respectively 19.3% and 16, 9% of patients. One hundred and eighty patients (55.2%) presented with oliguria. Strip albuminuria was performed in 235 patients (72.1%). It found 3 or more crosses in 38.3% of cases. We recorded 53 cases of anemia (16.3%), 16 cases of significant proteinuria (5%), hepatic cytolysis in 22 patients (6.7%), thrombocytopenia in 37 patients (11.3%), and 43 cases of hyperuricaemia (13.2%). Obstetric ultrasound found 36 cases of severe oligohydramnios (11%), 8 twin pregnancies (2.4%) and an umbilical Doppler anomaly in 10 patients (3.1%). Pre-eclampsia was the most common clinical form

关键词： HTA Pregnancy Preeclampsia Caesarean Section Prematurity

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Evolution of the Spatial Distribution of Basic Infrastructures and Services in the Niakhar Area (Fatick), Senegal

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Journal of Geographic Information System 2023年第6期15卷 611-628页

作者： Alphousseyni Ndonky mouhamadou moustapha Mbacké Ndour Pape Boubou Sow Rosalie Diouf Engineering Sciences Training and Research Unit University Iba Der Thiam of Thies Thies Senegal School of Applied Economics Cheikh Anta Diop University Dakar Senegal

Basic infrastructures and services present an important socio-economic and territorial equity issue, because the availability of these makes it possible to improve the living conditions of populations, makes territories attractive and stimulates their development. The objective of our study has been achieved, so our results provided information on the rate of propagation of basic infrastructures and services, as well as the evolution of the forms of spatial distribution of the latter. The data used comes from the census and geolocation of basic infrastructures and services in the Niakhar area, carried out by the IRD in 2018. Centrographic measurements were used to describe the overall spatial distribution and the use of chi-square statistics confirmed the existence of a preferential direction of distribution. To verify the existence of a spatial structure of infrastructure and service seeding, the Ripley statistic is used. Our results can be useful for land use planning and spatial resource allocation policies. Indeed, the identification of different types of spatial aggregates and the highlighting of the preferred directions of the distribution of basic infrastructures and services, make it possible to correct disparities in the spatial distribution of basic resources.

关键词： Spatial Structure Spatial Disparities Ripley Statistic Centrographic Measurements

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Sanitary Evacuations at the Maternity Unit of the Social Hygiene Institute (IHS) in Dakar in 2020

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Advances in Reproductive Sciences 2023年第4期11卷 151-158页

作者： mouhamadou Mansour Niang Mohamaed Amine Inzale Fatou Samb Cheikh Tidiane cisse Department of Gynecology-Obstetrics Hospital Institute of Social Hygiene of Dakar Dakar Senegal

Objective: Determine the frequency of evacuations, specify the epidemiological and clinical characteristics of the evacuees, evaluate the data of the evacuation, the management and the maternal-fetal prognosis. Methods: Prospective and descriptive retrospective study concerning obstetrical evacuations received at the maternity ward of the Hospital of the Institute of Social Hygiene in Dakar between January 1 and December 31, 2020, i.e. a period of 12 months. Results: During the study period, we collected 1156 evacuees out of a total of 3507 patients treated in the Service, i.e. a frequency of 33%. The average age of the patients was 27.07 years with extremes of 14 and 46 years. Patients aged between 20 and 29 were the most represented (51.73%). The average parity was 1.6 with extremes of 0 and 10 pares. The nulliparous (46.37%) were the majority. The majority of evacuated patients (99.6%) resided in the Dakar region, including 58% in the suburbs and 42% in the city center. The patients received had performed an average of 3 prenatal consultations with extremes ranging from 0 to 9 CPN. They most often came from health centers (55.05%) or hospitals (29.09%). The reasons for evacuations were dominated by dystocia (21.54%) followed by premature rupture of membranes (17.21%) and premature deliveries (16.35%). On admission, only 176 patients (15.2%) had an evacuation sheet. Patients transited on average through two health structures (extremes ranging from 0 to 7 structures) before reaching the reception structure. The evacuation was most often done with a private vehicle on the patient’s own means (91.96%). The outcome of the evacuees was most often vaginal delivery or hospitalization (72.79%). The majority of patients (99.4%) had evolved favorably but we deplore one maternal death (0.09%) linked to a late puerperal infection. We recorded 74 perinatal deaths and 1041 live births, i.e. a stillbirth rate of 71.1‰ live births. The causes of death were dominated by prematurit

关键词： Obstetrical Evacuations Institute of Social Hygiene Maternal-Fetal Prognosis

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Hierarchy of Rural Localities in the Niakhar Area (Fatick, Senegal)

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Journal of Geographic Information System 2022年第3期14卷 221-239页

作者： Alphousseyni Ndonky mouhamadou moustapha Mbacké Ndour Ibrahima Ndiaye Richard Lalou Pape Boubou Sow Engineering Sciences Training and Research Unit University of Thies Thies Senegal School of Applied Economics Cheikh Anta Diop University Dakar Senegal MERIT_UMR 216/IRD Paris Descartes University Paris France

Although the study of the hierarchy of localities presents an important social and economic stake, studies focused on the hierarchy of rural localities are relatively weak, especially in Africa. It is important to highlight the hierarchy of rural areas in order to reveal poles that can support sustainable growth. Our main objective is to study the hierarchy of rural localities in the Niakhar area, using a geographic approach. The data come from the Niakhar demographic, epidemiological and environmental observatory database and the Niakhar Atlas project of the French Research Institute for Development (IRD). The net flow method, the primacy index, the median population threshold method and the measurement of the correlation between level of centrality and population size are used to analyze the data. Our study allowed us to determine the main types of centrality and to establish the hierarchy of rural localities in the Niakhar zone. It also highlighted the strong correlation between the rank of localities and the size of the population of the latter. The main contribution of our work is to have highlighted, in order, the structuring localities of the rural space of the Niakhar area, by combining several indicators of centrality.

关键词： Hierarchy Rural Localities Centrality Population Size Service Functions Attractiveness

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Nuchal Cord at Delivery and Neonatal Outcomes: A Retrospective Cohort Study

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Open Journal of Obstetrics and Gynecology 2022年第4期12卷 285-291页

作者： Mbodji Aissatou Gueye Mamour Wade mouhamadou Ndiaye Mame Diarra Dia Aliou Djiby cisse Aliou Ibrahim Rahadat Ndiaye Mor Talla Mbaye Magatte Philippe Maguilen Senghor Health Center Dakar Sénégal Cheikh Anta Diop Univeristy Dakar Sénégal Gaston Berger University Saint-Louis Sénégal

Objective: The present study was aimed at evaluating the outcome of pregnancies with a nuchal cord. Methods: A retrospective population-based study of all deliveries during the years 2011-2020 in Philippe Maguilen SENGHOR Center was conducted. Perinatal outcome of patients with and without nuchal cord was compared. Results: Among 44,958 deliveries during the study period, 1.8% had a nuchal cord, documented at birth (n = 807). Higher rates of labor induction (9.1% vs. 3.2%;p 0.001) and non-reassuring fetal heart rate patterns (RR = 2.366;CI: 1.631 - 3.432) were noted among pregnancies with nuchal cord as compared with the control group. The cesarean delivery rate was significantly higher among pregnancies with a nuchal cord (39.5% vs. 21.8%;RR = 2333;CI: 2.023 - 2.692). Although 5 min Apgar scores lower than 7 were more common in pregnancies with a nuchal cord (7.8% vs. 3.8%;RR = 2.117;CI: 1.629 - 3.363). There was no statistical significance between the two groups for the perinatal mortality. Conclusion: Nuchal cord is associated with prolonged labor and adverse perinatal outcome.

关键词： Nuchal Cord Perinatal Outcome Philippe Senghor Health Center Dakar

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Management and Control of a DC Bus Powered by Renewable Energies

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Journal of Applied Mathematics and Physics 2021年第7期9卷 1652-1672页

作者： mouhamadou moustapha Diop Ibrahima Gueye Abdoulaye Kebé moustapha Diop ENSETP Dakar Senegal Cheik Anta Diop University of Dakar (UCAD) Dakar Senegal

This article proposes a method of management and control of a continuous bus powered by renewable energies for autonomous applications. The DC bus is obtained from two systems of renewable sources (the solar system and the wind system) and storage battery (Lithium Ion). The continuous bus control and management procedure require efficiency in the control of the charge and discharge of the battery according to the load energy demand (DC Motor). The battery charging process is non-linear, varying over time with considerable delay, so it is difficult to achieve the best performance on control with energy management using traditional control approaches. A fuzzy control strategy is used in this article for battery control. To improve battery life, fuzzy control manages the desired state of charge (SOC). The entire system designed is modeled and simulated on MATLAB/Simulink Environment.

关键词： DC Bus Battery Lithium Ion Control and Management Lifetime SOC Fuzzy Logic DC Motor

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Quality of Life of Patients on Peritoneal Dialysis in Dakar: A Senegalese Single Centre Experience

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Open Journal of Nephrology 2016年第2期6卷 37-42页

作者： Kane Yaya cisse mouhamadou moustapha Seck Sidy Mohamed Lemrabott Ahmed Tall Faye Maria Hounsounou Christian Diallo Kalilou Ka El Hadji Fary Niang Abdou Diouf Boucar Nephrology and Internal Medicine Department of Assane Seck University Ziguinchor Senegal Nephrology Department of Teaching Hospital Aristide Le Dantec Dakar Senegal Nephrology Department of Gaston Berger University Saint-Louis Senegal

Introduction: Measuring the quality of life (QOL) in recent years has become an indispensable tool in monitoring patients suffering from chronic diseases. We conducted this study to assess QOL of patients undergoing peritoneal dialysis in Dakar, and to identify associated factors. Patients and Methods: This is a cross-sectional study which was carried out from 10 to 30 June, 2011 in the peritoneal dialysis unit at university hospital in Dakar. We included all patients with end-stage renal disease (ESRD) of any age, who were on PD since at least six months and who gave their consent. The QOL was assessed using the Kidney Disease Quality of Life Short-Form 1.2 (KDQoL-SF). Results: Sixteen patients were included with a mean age of 50.25 ± 13.48 years and a sex-ratio of 1.27. Considering SF-36, the overall mean score (SMG) was 60.11 ± 15.96 with a Mean Physical Component Summary Scale of 53.66 ± 16.98 and a Mental Component Summary Scale of 70.85 ± 6.14. Concerning the KDQoL-SF, the global mean score was 61.83 ± 19.35 with a mean physical score of 50.55 ± 16.52 and a mean mental score of 62.52 ± 21.53. The mean dialysis specific dimension score was 62.52 ± 21.53 and the mean mental health score was 85.93 ± 12.06. Age, weight, level of instruction and social support were correlated with a worse QOL. Conclusion: This study showed an alteration of our PD patients’ QOL, particularly in their physical health. However, the number of patients included in the study is not enough to permit a formal conclusion.

关键词： Quality of Life Peritoneal Dialysis Dakar

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