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Petrographic and Structural Studies of the Guintéguéla Formations (Northwest of Côte d’Ivoire)

Open Journal of Geology 2024年第1期14卷 29-49页

作者： mohamed Samuel Moriah Conte N’guessan nestor Houssou Oumar Barou kaba mohamed lam.ne Timite Abdoulaye Kadiatou Diallo Aly Soumah mohamed Camara mohamed Fofana Djibril M’Mamy Camara Applied Research Laboratory Fundamental Geology and Prospecting Research Unit Emergent Centre Mines and Society Higher Institute of Mines and Geology of Boké Boké Republic of Guinea Laboratory of Geology and Energy Resources (LGRME) UFR of Earth Sciences and Mineral Resources University Felix Houphouet Boigny Abidjan Republic of Ivory Coast Applicated Research Laboratory Mining and Resource Development Research Unit Emergent Centre for Mines and Society Higher Institute of Mines and Geology of Boké Boké Republic of Guinea

Côte d’Ivoire is currently experiencing strong growth in the mining sector. Identifying the formations present in our subsoil is therefore essential for mining recovery. It is in this context that we conducted studies on the formations present in the locality of Guintéguéla. It is located in the northwest of Côte d’Ivoire in the bafing region. The aim of this work was to determine the petrographic and structural characteristics of the formations of the area. The methodology began with documentation and then followed petrography and structural analysis work on the macroscopic and microscopic levels. We observed six groups of rocks: granitoids, amphibolites, orthogneiss, quartzites (poor and rich in magnetites), volcano-sediments and filonian rocks. Metamorphism is of amphibolite to granulite facies. However, volcano-sediments must be associated with the green schist facies. With regard to the structural, structures and microstructures such as foliation;fractures;sigmoidal figures reveal that the studied area was affected by ductile and also brittle tectonics whose main directions are oriented along the shear corridor, so N-S to NNW-SSE.

关键词： Mining Petrography Structural Metamorphism

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Immunovirological Discordance and Associated Factors among People Living with HIV under Antiretroviral Treatment at Hôpital de Jour de Donka, Guinea

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Open Journal of Medical Microbiology 2024年第2期14卷 93-104页

作者： Mariama Sadjo Diallo Djiba kaba Charles Tchibinda Delicat Issiaga Diallo Boh Fanta Diane Doufin Traore Ousmane Niabaly Oumar Mouctar Diallo Ouo-Ouo Yaramon Kolie Aly Patrice Kamano Pascal Koivogui Ahmed Sékou Keita mohamed Macire Soumah Thierno Mamadou Tounkara mohamed Cisse Facult des Sciences et Techniques de la Sant Universit Gamal Abdel Nasser de Conakry Conakry Guine Laboratoire de Biologie Molculaire nestor Bangoura/Helene Labrousse Hpital de Jour Donka CHU Donka Conakry Guine Centre dExcellence Africain Pour la Prvention et le Contrle des Maladies Transmissibles Conakry Guine Service de Dermatologie-Vnrologie CHU Donka Conakry Guine

The antiretroviral treatment (ART) has significantly reduced the number of new HIV/AIDS infections and related deaths. However, cases of immunovirological discordance (IVD) are found in various locations. The objective of this study was to determine the profile of People living with HIV (PLHIV) with IVD and to identify associated factors. We conducted a cross-sectional study based on the records of PLHIV under ART for at least 6 months, followed at Hpital de Jour Donka from 2015 to 2017, and having both viral load (CV) and CD4 T-cell count. Prevalence of IVD was 34.57%, with 23.87% for immunological discordance (ID) and 10.7% for virological discordance (VD). Females were predominant (66.26%), and male gender influenced IVD with a statistically significant difference (p = 0.006) and was associated with VD (p = 0.007). The average age was 38.77 11.30 years. PLHIV were classified at WHO stages 3 and 4 (86.01%). The median initial haemoglobin level was 11.5 g/L [3.2 - 12]. The mean initial CD4 T-cell count was 272.84 cells/mm3 201.6. The median initial viral load (VL) was 147,337 copies/mL [1092 - 31,675,000]. The initial CD4 T-cell count 3 was associated with IVD with a statistically significant difference (p = 0.0009) and correlated with ID (p = 0.000). Prurigo was associated with IVD with a statistically significant difference (p = 0.003). Cerebral toxoplasmosis was not associated with IVD but was associated with ID (p = 0.04). This study allowed us to describe the profile of PLHIV with IVD. The main associated factors were male gender, initial CD4 T-cell count 3, toxoplasmosis, prurigo, and herpes zoster.

关键词： HIV Antiretroviral Treatment (ART) Immunovirological Discordance Donka Guinea

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Causes and Prognosis of Cases of Acute Obstructive Renal Failure Managed at the Donka National Hemodialysis Center

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Open Journal of nephrology 2024年第2期14卷 136-146页

作者： Amadou Yaya Diallo Mamadou Mouctar Diallo Mamadou Dian Barry Kadiatou Mamadou Bobo Barry Saikou Oumar Diallo Djenabou Diallo Soriba Bangoura Mamadou Malal Diallo Thierno Mamadou Oury Diallo mohamed lam.ne kaba Alpha Oumar Bah Department of nephrology-Hemodialysis CHU Donka Conakry Guinea Faculty of Health Sciences and Techniques Gamal Abdel Nasser University of the Republic of Guinea Conakry Guinea Department of Urology-Andrology CHU Ignace Deen Conakry Guinea

Introduction: Acute obstructive renal failure (AORF) is a frequent clinical situation, secondary to obstruction of the urinary excretory tract. Whatever the cause, urinary tract obstruction suddenly opposes glomerular filtration and is responsible for tubulointerstitial lesions. It accounts for 10% of acute renal failure (ARF). The aim of this study was to identify the causes and prognosis of cases of acute obstructive renal failure managed at the Centre National d’hémodialyse Donka. Material and Methods: This was a prospective descriptive study lasting 6 months, from September 1, 2022 to February 29, 2023. All patients undergoing haemodialysis for acute obstructive renal failure who agreed to participate in the study and whose medical records were complete were included. Results: During the course of the study, we registered 97 haemodialysis patients, including 20 cases (20.62%) of acute obstructive renal failure. The mean age of the patients was 57.8 ± 10.54 years, with a male predominance of 11 cases (55%) and a sex ratio of 1.22. The reasons for consultation were dominated by physical asthenia 11 cases (55%), lumbar pain 9 cases (50%), vomiting 6 cases (30%) and acute urine retention 6 cases (30%). Arterial hypertension 16 cases (80%) and urinary tract infection 10 cases (50%) were the most common antecedents. The etiologies of RAOI were dominated by lithiasis 10 cases (50%), neoplasia 6 cases (30%) and benign prostatic hypertrophy 3 cases (15%). mean creatinine was 1267.60 ± 710.76 μmol/l with extremes of 243 μmol/l and 2822 μmol/l, mean urea was 39.56 ± 18.36, hyperkalemia in 14 cases (70%) and hyponatremia in 8 cases (40%). After hemodialysis, 9 cases (45%) recovered renal function, 4 cases (20%) became chronic and 7 cases (35%) died. Conclusion: The frequency of AKI remains non-negligible in our department, and early detection and prompt management would considerably reduce the morbidity and mortality associated with this pathology.

关键词： Acute Obstructive Renal Failure Hemodialysis Prognosis Donka

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

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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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Respiratory Complications of Measles in the Pediatric Ward of the Regional Hospital of Kindia/Guinea

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Open Journal of Pediatrics 2023年第5期13卷 727-733页

作者： mohamed lam.ne Diallo Mamadou Ciré Barry Fatoumata Binta Diallo kaba Bangoura Hessou Agossi Nouvidomé Chimène Telly Sy Urgences Pédiatriques Donka National Hospital Conakry Guinea Service de Pédiatrie H&#244pital National Ignace Deen Conakry Guinea Service de Pédiatrie Donka National Hospital Conakry Guinea Service de Pédiatrie H&#244pital Régional de Kindia Kindia Guinea Service de Gynécologie-Obstétrique Hopital National Ignace Deen Conakry Guinea

Introduction: Measles is a highly contagious infectious disease caused by the measles virus belonging to the morbillivirus genus, the measles morbillivirus species and the Paramyxoviridae families. The aim was to study respiratory complications due to measles in children aged 1 to 15 in the pediatric ward of the Kindia regional hospital. Materials and Methods: A transversal descriptive study was carried out in the pediatrics department of the Kindia Regional Hospital from October 1, 2019, to March 31, 2020, on children aged 1 to 15 years hospitalized for measles with respiratory complications. Results: 53 cases of measles were recorded, i.e. 11.71% of hospital pathologies including 32 cases of respiratory complications, i.e. 60.38% with an M/F sex ratio of 1.66, male predominance of 62.5%, and a mean age of 4.10 ± 2.8 years. The outcome was favorable in 90.62% of our patients. The mortality was 9.38% with an average hospital stay of 6.8 ± 3.04 days. Conclusion: The respiratory complication of measles is a serious pathology due to the risk of mortality that it can cause, a consultation followed by rapid treatment can contribute to a reduction in complications and a faster cure.

关键词： Measles Respiratory Complication Child Kindia

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Petrological and Statistical Studies of the Limbiko Bauxite Deposit, Republic of Guinea

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International Journal of Geosciences 2023年第4期14卷 351-376页

作者： Abdoulaye Kadiatou Diallo mohamed Samuel Moriah Conte Oumar Barou kaba Aly Soumah mohamed Camara Laboratory for Applied Research (LAR) Fundamental Geology and Prospection Research Unit (FGPRU) Emerging Centre for Mines and Society (ECMS) of the Institute Superior of Mines and Geology of Boke (ISMGB) Boké Republic of Guinea Laboratory for Applied Research (LAR) Research Unit Mining and Resource Development (RUMRD) Emerging Centre for Mines and Society (ECMS) of the Institute Superior of Mines and Geology of Boke (ISMGB) Boké Republic of Guinea

The increasing demand for Aluminium pushes the miners to multiply the research in order to answer this demand. The objective of this work is to characterize the bauxitic deposit of Limbiko. The methodology consists in collecting samples, and establishing stratigraphic logs, sections and geological maps. The analyses were carried out in the laboratory of the Company des Bauxites de Guinea. Statistical methods were used to process the geochemical data. The study area is characterized by sedimentary formations of the Devonian, in which the dolerites of the Mesozoic were injected. It is on these Devonian and Mesozoic formations that the Limbiko bauxite deposit was developed. The stratigraphic logs show the succession of formations. The parent rock is surmounted by an alteration crust. The petrographic study is based on the bauxitic and transitional zones characterized by ferruginous laterites. Both zones contain some ferriplantite. Mineralogical analysis shows the presence of gibbsite, goethite, alumogoethite, rutile and clay minerals. The geochemical study of the major elements shows that the more the contents of SiO2, Fe2O3 decrease, the more the content of Al2O3 increases and those of TiO2, Al2O3 increase in the same direction. The PCA confirms the mineralogical results by classifying the samples into clay, bauxite and ferrite.

关键词： Bauxite Alteration Crust Aleuro-Argillite Dolerite Gibbsite

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Evaluation of Glomerular Filtration Rate and Urinary Abnormalities in Children with Cancer before Chemotherapy

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Open Journal of Pediatrics 2023年第4期13卷 594-603页

作者： Mamadou Moustapha Diop Aissata Barry Ouo Ouo Kolié Emanuel Camara mohamed lam.ne Diallo kaba Bangoura Mamadou Aliou Doukouré Pé neabel Beimy Dienab Diallo Moustapha Kouyate mohamed lam.ne kaba Department of Pediatrics Faculty of Health Sciences and Technologies Gamal Abdel Nasser University Conakry Republic of Guinea Pediatric Emergency CHU Donka Ministry of Higher Education Scientific Research and Innovation Conakry Republic of Guinea Hemodialysis Department CHU Donka Ministry of Higher Education Scientific Research and Innovation Conakry Republic of Guinea

Introduction: Glomerular filtration is an important elimination pathway for many types of chemotherapy. Accurate estimation of glomerular filtration is essential in the management of children with cancer. Methodology: This was a prospective cross-sectional study of the descriptive type extending over a period of 6 months from July 01 to December 31, 2021 on all children with cancer followed in the pediatric hemato-oncology unit of the HND with a renal, blood and urinary assessment associated with the GFR calculated by the SCHWARTZ formula during the study period. Results: During the study period, we registered 41 new cases of cancer in the pediatric oncology unit. The age group of 0 - 5 years was the most represented, i.e. 65.85% and the average age was 5.6 ± 4 years. The most cited clinical signs were fever ie 56.10% followed by abdominal pain 34.15% and anemia 26.83%. The most represented diagnosis was Burkitt’s Lymphoma, i.e. 26.83% followed by Retinoblastoma 24.39%. Mean serum creatinine was 70.65 ± 68.93 μmol/L. In our series, patients whose normal glomerular filtration rate were more represented, i.e. 70.73% and 29.27% had an abnormal GFR with an average of 87.28 ± 70 mL/min/1.73m2. Proteinuria and leukocyturia were observed in 31.71% and 19.51% respectively. Glycosuria and hematuria with common frequencies of 2.44% of patients. Conclusion: The prevention of renal toxicity of anticancer drugs always involves the precise evaluation of renal function using the Schwartz formula in children. .

关键词： GFR Child Cancer Chemotherapy

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Transient Diabetes Induced by L-Asparaginase

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Open Journal of Pediatrics 2023年第6期13卷 862-865页

作者： Mamadou Moustapha Diop M’mah Aminata Bangoura Aissata Barry Emmanuel Camara Kolié Ouo Ouo Pé neabei Beimy mohamed lam.ne Diallo kaba Bangoura Moustapha Kouyate mohamed lam.ne kaba Aka Nbga Department of Paediatrics Faculty of Health Sciences and Techniques Gamal Abdel Nasser University Conakry Republic of Guinea Urgence Pédiatrique CHU Donka Ministère de l’enseignement de la recherche scientifique et de l’innovation Conakry Republic of Guinea Haemodialysis Department CHU Donka Ministry of Education Scientific Research and Innovation Conakry Republic of Guinea

Background: Although hyperglycaemia is one of the known side effects of L-asparaginase, its contribution to the development of diabetic ketoacidosis (DKA) is less well known in the literature. Asparaginase is an essential component of treatment protocols for acute lymphoblastic leukaemia (ALL) in combination with other chemotherapeutic drugs. On further evaluation, she was found to have high anion gap metabolic acidosis, hyperglycaemia and ketonuria. In recent decades, the use of these chemotherapeutic agents has led to a decrease in mortality and disease-free survival in ALL. L-asparaginase is one of the chemotherapy protocols used in the treatment of acute lymphoblastic leukaemia (ALL) and can induce hyperglycaemia which is aggravated by the concomitant use of corticosteroids. We report the observation of a 14-year-old girl treated with chemotherapy (GFA LAL protocol) who developed transient diabetes following the use of L-asparaginase. She was treated at the Donka paediatric haemato-oncology unit by a multidisciplinary team including a paediatric oncologist, a psychologist and a diabetologist. The aim of this study was to highlight blood glucose monitoring before and after the use of asparaginase in acute lymphoblastic leukaemia. Conclusion: We conclude that the occurrence of ketoacidosis following the use of asparaginase is a rare event. We recommend close monitoring of blood glucose levels for hyperglycaemia in patients with ALL receiving L-asparaginase.

关键词： Asparaginase Diabetes ALL Donka

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Pterygium Popliteal Syndrome Concerning a Case in the Pediatric Surgery Department of the Donka National Hospital (Conakry CHU)

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Open Journal of Pediatrics 2022年第1期12卷 162-169页

作者： Balla Keita Mamadou Alpha Toure mohamed lamie Sacko Mamadou Madiou Barry Mamadou Karamba kaba Daniel Agbo-Panzo Pediatric Surgery Department CHU Donka Conakry Guinea Gamal Abdel Nasser University of Conakry Conakry Guinea Plastic Surgery Department CHU Donka Conakry Guinea

Introduction: Popliteal pterygium syndrome is a rare birth defect, combining craniofacial, genitourinary and musculoskeletal abnormalities. It is an autosomal dominant disease caused by a mutation in the IRF6 gene. We report in this observation the 1st Guinean case corrected by the surgical method as well as a review of the literature for a diagnostic and therapeutic approach. Patient and observation: We present the case of a 7-day old male newborn weighing 2700 g who was received for bilateral cleft lip and palate, lower lip fossa or sinuses, bilateral popliteal pterygium, and triangular skin fold above the hallux. The patient underwent several surgical procedures aimed at correcting these abnormalities. The correction of the pterygium of the lower limbs was ensured by excision of the fibrous band, the tenoplasty in z of the calcaneal tendon on the right side and the skin plasty in z in series then immobilized by plaster splints. The immediate postoperative follow-up was straightforward. Conclusion: Popliteal pterygium syndrome is a rare congenital malformation, the diagnosis is primarily clinical. Early soft tissue lengthening surgery and serial z-skin plasty provide better correction of the knee pterygium. Correct correction of facial abnormalities gives the child a better appearance. The management of this syndrome is multidisciplinary.

关键词： Popliteal Pterygium Congenital Malformation Genetic Disease Pediatric Surgery Multidisciplinary Team

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Compliance of Magnetic Resonance Imaging Examination Requests at the Diagnostic Center of the National Social Security Fund of Conakry

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Open Journal of Radiology 2023年第1期13卷 58-66页

作者： Ousmane Aminata Bah Aminata Sakho Alpha Abdoulaye Balde Alpha Issiaga Barry kaba mohamed Douty Aboubacar Toure Armed Forces Reference Imaging Center (CIRA) Conakry Guinea Faculty of Health Sciences and Techniques Gamal Abdel Nasser University of Conakry Conakry Guinea Diagnostic Center of the National Social Security Fund (CNSS) Conakry Guinea

Introduction: MRI is a rapidly growing technique with more and more indica-tions and requests in the Republic of Guinea. Its correct prescription is a guar-antee for the satisfaction of the actors, both prescribers, radiologists and pa-tients. The main objective of this study was to evaluate the compliance of MRI examination requests at the Diagnostic Center of the National Social Se-curity Fund (CNSS) in Conakry. Material and Methods: This was a descriptive cross-sectional study of MRI prescription forms sent to the MRI unit of the CNSS Diagnostic Center from February 1 to May 1, 2021. The 8 compliance criteria established by the French High Authority for Health were used to evaluate the compliance of the examination requests. Results: A total of 7003 examination forms were sent to the facility, including 7% (n = 468) of MRIs. 56.2% of MRI requests were performed by specialists. We observed an overall compliance of 10%. Administrative and clinical compliance were missing in 24% and 38%, respectively. More specifically, the purpose of the examination was not mentioned in 60%, followed by the requesting department in 48.1% and the patient’s age in 35.1%. Conclusion: This study allowed us to highlight the gaps in establishing MRI requests. It would be important to organize an awareness campaign for prescribers on the usefulness of correctly filling an MRI request and to design templates to be filled out by prescribers.

关键词： CNSS Compliance Conakry Exams MRI

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