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Immune regulatory properties of multipotent mesenchymal stromal cells:Where do we stand? 被引量:27
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作者 ênio José Bassi Carlos Alberto Mayora Aita Niels Olsen Saraiva camara 《World Journal of Stem Cells》 SCIE CAS 2011年第1期1-8,共8页
Multipotent mesenchymal stromal cells (MSC) can be isolated and efficiently expanded from almost every single body tissue and have the ability of self-renewal and differentiation into various mesodermal cell lineages.... Multipotent mesenchymal stromal cells (MSC) can be isolated and efficiently expanded from almost every single body tissue and have the ability of self-renewal and differentiation into various mesodermal cell lineages. Moreover, these cells are considered immunologically privileged, related to a lack of surface expression of costimulatory molecules required for complete T cell activation. Recently, it has been observed that MSC are capable of suppressing the immune response by inhibiting the maturation of dendritic cells and suppressing the function of T lymphocytes, B lymphocytes and natural killer cells in autoimmune and inflammatory diseases as a new strategy for immunosuppression. The understanding of immune regulation mechanisms by MSC is necessary for their use as immunotherapy in clinical applications for several diseases. 展开更多
关键词 IMMUNOSUPPRESSION MESENCHYMAL stem cell IMMUNE system Inflammation AUTOIMMUNE disease
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Innate lymphoid cells in tissue homeostasis and diseases 被引量:12
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作者 Aline Ignacio Cristiane Naffah Souza Breda Niels Olsen Saraiva camara 《World Journal of Hepatology》 CAS 2017年第23期979-989,共11页
Innate lymphoid cells(ILCs) are the most recently discovered family of innate immune cells. They are a part of the innate immune system, but develop from the lymphoid lineage. They lack pattern-recognition receptors a... Innate lymphoid cells(ILCs) are the most recently discovered family of innate immune cells. They are a part of the innate immune system, but develop from the lymphoid lineage. They lack pattern-recognition receptors and rearranged receptors, and therefore cannot directly mediate antigen specific responses. The progenitors specifically associated with the ILCs lineage have been uncovered, enabling the distinction between ILCs and natural killer cells. Based on the requirement of specific transcription factors and their patterns of cytokine production, ILCs are categorized into three subsets(ILC1, ILC2 and ILC3). First observed in mucosal surfaces, these cell populations interact with hematopoietic and non-hematopoietic cells throughout the body during homeostasis and diseases, promoting immunity, commensal microbiota tolerance, tissue repair and inflammation. Over the last 8 years, ILCs came into the spotlight as an essential cell type able to integrate diverse host immune responses. Recently, it became known that ILC subsets play a key role in immune responses at barrier surfaces, interacting with the microbiota, nutrients and metabolites. Since the liver receives the venous blood directly from the intestinal vein, the intestine and liver are essential to maintain tolerance and can rapidly respond to infections or tissue damage. Therefore, in this review, we discuss recent findings regarding ILC functions in homeostasis and disease, with a focus on the intestine and liver. 展开更多
关键词 Innate lymphoid cells INTESTINE LIVER HOMEOSTASIS Inflammatory diseases
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Impact of land uses on water quality in Malaysia: a review 被引量:11
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作者 Moriken camara Nor Rohaizah Jamil Ahmad Fikri Bin Abdullah 《Ecological Processes》 SCIE EI 2019年第1期128-137,共10页
Land use changes in urbanization,industrialization,and agricultural processes will continue to have negative impacts on water quality at all scales.The impact of land use changes on water quality is generally studied ... Land use changes in urbanization,industrialization,and agricultural processes will continue to have negative impacts on water quality at all scales.The impact of land use changes on water quality is generally studied by analyzing the relationships between land use and water quality indicators.Therefore,the purpose of this research was to review and analyze the main relationships between land use and water quality,as well as to visualize the major sources and processes of water quality pollution in Malaysia.To achieve our goal,we evaluated the significance of both land use and water quality attributes used in the past studies and correlated them to understand their relationship from another angle of view.The results revealed that 87%of the reviewed studies indicated urban land use as a major source of water pollution,while 82%indicated agricultural land use,77%indicated forest land use,and 44%indicated other land uses.However,the results of correlation analysis showed that agricultural and forest-related activities more affected water quality through their significant positive correlation with physical and chemical indicators of water quality,while urban development activities had a greater impact on water quality through altering hydrological processes such as runoff and erosion.These findings would provide decision-makers with useful information for managing water pollution processes rather than sources only. 展开更多
关键词 Land use Water quality MALAYSIA
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秦岭大熊猫自然保护区与社区发展中的问题与对策——以长青自然保护区为例 被引量:9
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作者 王昌海 温亚利 +1 位作者 时鉴 camara MOUSSA 《资源开发与市场》 CAS CSSCI 2011年第2期150-153,共4页
在分析陕西秦岭大熊猫自然保护区发展现状的基础上,对其建设管理与周边社区经济社会中存在的问题进行了分析,探讨了自然保护区与周边社区的相互影响关系,提出了大熊猫自然保护区与社区协调发展的对策建议。
关键词 大熊猫自然保护区 周边社区 保护与发展 对策
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High Risk Factors of Pancreatic Carcinoma 被引量:5
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作者 Soriba Naby camara 殷涛 +37 位作者 杨明 李响 龚琼 周静 赵刚 杨智勇 Tajoo Aroun Martin Kuete Sonam Ramdany Alpha Kabinet camara Aissatou Taran Diallo 冯珍 宁辛 熊炯新 陶京 钦琪 周伟 崔静 黄敏 郭尧 勾善淼 王博 刘涛 Ohoya Etsaka Terence Olivier Tenin Conde Mohamed Cisse Aboubacar Sidiki Magassouba Sneha Ballah Naby Laye Moussa Keita Ibrahima Sory Souare Aboubacar Toure Sadamoudou Traore Abdoulaye Korse Balde Namory Keita Naby Daouda camara Dusabe Emmanuel 吴河水 王春友 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 2016年第3期295-304,共10页
Over the past decades, cancer has become one of the toughest challenges for health professionals. The epidemiologists are increasingly directing their research efforts on various malignant tumor worldwide. Of note, in... Over the past decades, cancer has become one of the toughest challenges for health professionals. The epidemiologists are increasingly directing their research efforts on various malignant tumor worldwide. Of note, incidence of cancers is on the rise more quickly in developed countries. Indeed, great endeavors have to be made in the control of the life-threatening disease. As we know it, pancreatic cancer(PC) is a malignant disease with the worst prognosis. While little is known about the etiology of the PC and measures to prevent the condition, so far, a number of risk factors have been identified. Genetic factors, pre-malignant lesions, predisposing diseases and exogenous factors have been found to be linked to PC. Genetic susceptibility was observed in 10% of PC cases, including inherited PC syndromes and familial PC. However, in the remaining 90%, their PC might be caused by genetic factors in combination with environmental factors. Nonetheless, the exact mechanism of the two kinds of factors, endogenous and exogenous, working together to cause PC remains poorly understood. The fact that most pancreatic neoplasms are diagnosed at an incurable stage of the disease highlights the need to identify risk factors and to understand their contribution to carcinogenesis. This article reviews the high risk factors contributing to the development of PC, to provide information for clinicians and epidemiologists. 展开更多
关键词 high risk factors pancreatic cancer treatment epidemiology pathogenesis etiology
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Reversible Semi-Fragile Watermarking Technique for Integrity Control of Relational Database 被引量:1
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作者 Ali Hamadou Abdoul Aziz Issaka Hassane +1 位作者 Lanciné camara Harouna Naroua 《Engineering(科研)》 2024年第9期309-323,共15页
Reversible watermarking schemes for relational database are usually classified into two groups: robust schemes and fragile schemes. The main limitation of existing reversible fragile methods is that they cannot differ... Reversible watermarking schemes for relational database are usually classified into two groups: robust schemes and fragile schemes. The main limitation of existing reversible fragile methods is that they cannot differentiate between legal and malicious modifications. In this paper, we introduce a novel lossless semi-fragile scheme based on prediction-error expansion for content protection of relational database. In the proposed method, all attributes in a database relation are first classified according to their sensitivity to legitimate updates. Then, the watermark is embedded by expanding the prediction error of the two least significant digits of securely selected attributes. At watermark extraction, the proposed method has the ability to fully restore the original data while detecting and localizing tampering. The applicability of our method is demonstrated theoretically and experimentally. 展开更多
关键词 Semi-Fragile Watermarking Integrity Control REVERSIBILITY Prediction-Error Expansion
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Physico-Chemical Analysis of Soils Used for Pineapple Cultivation in the Sub-Prefectures of Maferinyah and Friguiagbé (Prefectures of Forécariah and Kindia) Republic of Guinea 被引量:1
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作者 Sâa Gerard Tolno Saran camara +2 位作者 Amadou Sylla Adama Moussa Sakho Lounceny Traore 《Journal of Agricultural Chemistry and Environment》 2024年第3期251-262,共12页
Over the years, pineapple production in the Republic of Guinea has become less competitive in the West African sub-region, with a world ranking of 144th. It is therefore only natural to review certain parameters in or... Over the years, pineapple production in the Republic of Guinea has become less competitive in the West African sub-region, with a world ranking of 144th. It is therefore only natural to review certain parameters in order to improve this ranking. To do this, certain physico-chemical parameters of soil samples from Friguiagbé and Maferinyah (in the Kindia and Forécariah prefectures) were taken and analysed using the following techniques: Pipette de Robinson, Anne, Bray II, Kapen HICDVITZ, Mc. Lead (1982). The analytical results show that the soils at Friguiagbé in Kindia and Maferinyah in Forécariah are acidic, with pH values of 4.4 and 4.7 (fields I and II) and 4.8 and 4.7 (fields I and II) respectively. The soils have a silty-sandy texture. This study could therefore serve as a guide for the Ministry of Agriculture of the Republic of Guinea. 展开更多
关键词 Soil Pineapple Crop Physico-Chemical Analysis
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Lipid Profile of Patients Seen in Consultation at the Cardiology Department at the Ignace DEEN National Hospital (City of Conakry, Republic of Guinea)
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作者 Fatoumata Bah camara +6 位作者 Ousmane Sangare Ahmadou Sadio Diallo Taliby Dos camara Karamo Toure N’Dankassa Akolbel Saidou Balde Demba Magassouba 《Open Journal of Endocrine and Metabolic Diseases》 2024年第8期143-163,共21页
The study addressed a crucial public health concern of dyslipidemia and its management, with a focus on the Ignace DEEN National Hospital patients, filling a research gap in the Republic of Guinea. It contributed valu... The study addressed a crucial public health concern of dyslipidemia and its management, with a focus on the Ignace DEEN National Hospital patients, filling a research gap in the Republic of Guinea. It contributed valuable epidemiological data on dyslipidemia in the studied population, emphasizing gender, age, and socio-professional categories, which could inform tailored prevention and management strategies in improving the health care of dyslipidemia patients by proposing diets to help these patients better manage their disease and a food system for preventing dyslipidemia. The study focused on the lipid profile of patients seen at the cardiology department at the Ignace DEEN National Hospital Republic of Guinea (Conakry). This was a prospective, descriptive study lasting six (6) months from January 24 to July 23, 2021;aimed at determining the frequency of lipid abnormalities and pathologies related to the lipid profile. A total of 523 people were included in this study with a female predominance of 59.34% compared to 40.66% of males for a ratio of 1.5 in favor of women. The age groups of 45 - 54 and 55 - 65 were the most affected with respective frequencies of 45.42% and 30.03%. The most represented socio-professional category was that of housewives, i.e. 45.78%, followed by traders 18.68%. Our series was dominated by the married couple, i.e. 77.29%. Dyslipidemia constitutes a modifiable cardiovascular risk factor in patients seen in the cardiology department at the Ignace DEEN Hospital;its control must be strict through the use of hygienic and dietary rules and hypolipidemia medications. 展开更多
关键词 DYSLIPIDEMIA Profile Lipid Lipid Abnormalities
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Risk Factors for Neonatal Mortality at the Institute of Nutrition and Child Health of the Donka/Guinea-Conakry National Hospital
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作者 Bangoura Mmah Aminata Kolié Ouo Ouo +8 位作者 camara Salématou Hassimiou Baldé Mariama Bangoura Kaba Diop Mamadou Moustapha camara Emmanuel Diallo Fatoumata Binta Doukouré Mamadou Aliou Mamadou Mouctar Sow Bémy Néabey 《Open Journal of Pediatrics》 2024年第2期327-337,共11页
Introduction: The birth of a baby is a moment of joy and celebration. However, the neonatal period is a very delicate phase of life. Neonatal mortality rates remain high in low-income countries. In Guinea, after 20 ye... Introduction: The birth of a baby is a moment of joy and celebration. However, the neonatal period is a very delicate phase of life. Neonatal mortality rates remain high in low-income countries. In Guinea, after 20 years, this rate has fallen from 34.2% in 1998 to 32% in 2018. Objective: To identify the main risk factors for neonatal mortality. Methods: This was an observational, analytical case-control study, lasting 6 months from January 1 to June 30, 2019, conducted at the Institut de Nutrition et de la Santé de l’Enfant (INSE) at Donka National Hospital. Results: We collected 242 cases and 242 controls, i.e. a total of 484 records. 748 patients were registered, with 32.35% deaths. 82.86% of deaths occurred in the early neonatal period. Statistical analysis revealed the main risk factors: prematurity (RQ 7.39 95% CI 3.27 - 16.61 p = 0.0000003), hypothermia (RQ 2.29 95% CI 1.51 - 3.46 p = 0.0001), acute fetal distress (RQ 2.13 95% CI 1.33 - 3.43 p = 0.0016), low birth weight (QR 1.91 95% CI 1.12 - 3.24 p = 0.016), home birth (QR 3.26 95% CI 1.25 - 8.46 p = 0.015). Conclusion: Neonatal mortality is a health problem in the INSE neonatology department. To reduce the mortality rate in this referral facility, it is essential to equip it and provide ongoing training for staff. 展开更多
关键词 Neonatal Mortality INSE Guinea-Conakry
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Epidemiological, Clinical and Prognostic Profiles of Measles in Children in the Pediatric Ward of the University Hospital of Conakry
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作者 Salématou Hassimiou camara Kaba Bangoura +4 位作者 Ouo Ouo Kolié Aissata Barry Fatoumata Binta Diallo Mohamed Lamine Diallo Emmanuel camara 《Open Journal of Pediatrics》 2024年第6期965-972,共8页
Introduction: Measles is a highly contagious viral infectious disease. It is one of the major causes of infant morbidity and mortality in developing countries. The general objective was to study the epidemiological, c... Introduction: Measles is a highly contagious viral infectious disease. It is one of the major causes of infant morbidity and mortality in developing countries. The general objective was to study the epidemiological, clinical and prognostic aspects of measles in the paediatric department of Conakry University Hospital. Methods: This was a prospective descriptive study lasting six months, from 01 October 2021 to 31 March 2022, in the paediatric wards of Conakry University Hospital. It included all patients aged between 0 and 15 years, received in consultation and/or hospitalised for measles and whose parents agreed to participate in the study. Results: Out of 3916 cases of paediatric pathology, we collected 380 cases of measles, i.e., 9.7%. The 0 - 4 age group was the most affected, accounting for 60.8%, with an average age of 26.6 ± 18.8 months and extremes of 3 months and 150 months. Females predominated in 53.2% of cases, with a sex ratio of 0.9. Non-vaccinated children accounted for 226 cases (59.5%). Fever was the most common clinical sign in the study (97.11%), followed by oculonasal catarrh (83.9%) and maculopapular lesions (82.1%). A notion of contagion was noted in 254 patients, i.e., a rate of 66.8%. The main complications were ocular in 229 cases (60.3%), pulmonary in 139 cases (36.6%) and digestive in 124 cases (32.6%). Malnutrition was noted in only 15 patients (3.93%). Treatment was symptomatic. The outcome was favourable in 92.3% of cases. We recorded 20 cases of death (5.3%) and 9 cases of escape (2.4%). Conclusion: Despite progress in the control and management of measles, much remains to be done to improve vaccination coverage with the aim of eradicating this disease. 展开更多
关键词 MEASLES CHILD Conakry University Hospital
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Epdemiology and Treatment of Pseudarthrosis of Long Bones in the Servce D Orthopedics-Traumatology of the University Hospital of Donka
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作者 camara Nouhou Mangué Diallo Mamadou Moustapha +5 位作者 Moustapha Alhassane Diallo Alpha Mamadou Fela Sidimé Sory camara Abdoulaye Kolié Germain Lamah Léopold 《Open Journal of Orthopedics》 2024年第3期133-138,共6页
Introduction: Pseudarthrosis (PSA) of the diaphysis of long bones still remains a current problem, despite improvements in the treatment of these fractures. Our study aims to study the epidemiological and therapeutic ... Introduction: Pseudarthrosis (PSA) of the diaphysis of long bones still remains a current problem, despite improvements in the treatment of these fractures. Our study aims to study the epidemiological and therapeutic aspects of PSA of the diaphysis of long bones. Method: This retrospective work concerns 30 cases of non-union of the diaphysis of long bones treated in the orthopedic and trauma surgery department at Donka National Hospital, during a period of 18 months from January 1, 2019 to June 30, 2020. Results: We recruited 30 patients, 80% of whom were male, with an average age of 39.9 years. Public road accidents (AVP) represented the main cause of fractures of the diaphysis of long bones 87%, they were open in 25 cases or 83%. The fractures were located in the middle 1/3 of the diaphysis of the long bones in 50% of cases. Treatment of initial fractures was traditional in 21 cases, orthopedic in 2 cases and surgical in 7 cases. It was aseptic nonunion in 28 cases (93%) and septic nonunion in 2 cases. They were hypertrophic in 7 cases, slightly hypertrophic in 5 cases, oligotrophic in 11 cases, atrophic in 6 cases and with bone defect in 1 case. The treatment was based on osteosynthesis including 16 cases of screwed “PV” plate: 7 cases of centromedullary “ECM” nailing, 2 cases of external fixator, 1 case of broaching and 4 cases of Plastering. The results according to ASAMI criteria on an anatomical level were excellent in 19 cases, good in 3 cases and poor in 3 cases, with a union rate of 76%. And 5 patients undergoing consolidation. Conclusion: Based on the literature data and the experience of our department, the true treatment of PSA requires correct management of the initial fracture without forgetting the interest in preventing AVP which appears to be an element essential, making it possible to reduce the incidence of fractures of the diaphysis. 展开更多
关键词 PSEUDARTHROSIS Aseptic-Septic-Diaphysis Long Bones Screwed Plate Intramedullary Nailing Bone Graft Osteo-Muscular Decortication
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Specificity of serological screening tests and reference laboratory tests to diagnose gambiense human African trypanosomiasis: a prospective clinical performance study
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作者 Martial Kassi N'Djetchil Oumou camara +25 位作者 Mathurin Koffi Mamadou camara Dramane Kaba Jacques Kabore Alkali Tall Brice Rotureau Lucy Glover Melika Barkissa Traorel Minayegninrin Kone Bamoro Coulibaly Guy Pacome Adingra Aissata Soumah Mohamed Gassama Abdoulaye Dansy camara Charlie Franck Alfred Compaore Aissata camara Salimatou Boiro Elena Perez Anton Paul Bessell Nick Van Reet Bruno Bucheton Vincent Jamonneau Jean-Mathieu Bart Philippe Solano Sylvain Bieler Veerle Lejon 《Infectious Diseases of Poverty》 SCIE CAS CSCD 2024年第4期48-63,共16页
Background Serological screening tests play a crucial role to diagnose gambiense human African trypanosomiasis(gHAT).Presently,they preselect individuals for microscopic confrmation,but in future"screen and treat... Background Serological screening tests play a crucial role to diagnose gambiense human African trypanosomiasis(gHAT).Presently,they preselect individuals for microscopic confrmation,but in future"screen and treat"strategies they willidentify individuals for treatment.Variability in reported specificities,the development of new rapid diagnos-tic tests(RDT)and the hypothesis that malaria infection may decrease RDT specificity led us to evaluate the specificity of 5 gHAT screening tests.Methods During active screening,venous blood samples from 1095 individuals from Cote d'ivoire and Guinea were tested consecutively with commercial(CATT,HAT Sero-K-SeT,Abbott Bioline HAT 2.0)and prototype(DCN HAT RDT,HAT Sero-K-SeT 2.0)gHAT screening tests and with a malaria RDT.Individuals with≥1 positive gHAT screening test underwent microscopy and further immunological(trypanolysis with T.b.gambiense LiTat 1.3,1.5 and 1.6;indirect ELISA/Tb.gambiense;T.b.gambiense inhibition ELISA with T.b.gambiense LiTat 1.3 and 1.5 VSG)and molecular reference laboratory tests(PCR TBRN3,18S and TgsGP;SHERLOCK 18S Tids,7SL Zoon,and TgsGP;Trypanozoon S2-RT-qPCR 18S2,177T,GPl-PLC and TgsGP in multiplex;RT-qPCR DT8,DT9 and TgsGP in multiplex).Microscopic trypanosome detection confrmed gHAT,while other individuals were considered gHAT free.Differences in fractions between groups were assessed by Chi square and differences in specificity between 2 tests on the same individuals by McNemar.Results One gHAT case was diagnosed.Overall test specificities(n=1094)were:CATT 98.9%(95%CI:98.1-99.4%);HAT Sero-K-SeT 86.7%(95%CI:84.5-88.5%);Bioline HAT 2.082.1%(95%CI:79.7-84.2%);DCN HAT RDT 78.2%(95%CI:75.7-80.6%);and HAT Sero-K-SeT 2.078.4%(95%CI:75.9-80.8%).In malaria positives,gHAT screening tests appeared less specific,but the difference Was significant only in Guinea for Abbott Bioline HAT 2.0(P=0.03)and HAT Sero-K-Set 2.0(P=0.0006).The specificities of immunological and molecular laboratory tests in gHAT seropositives were 98.7-100%(n=399)and 93.0-100%(n=302) 展开更多
关键词 Human African trypanosomiasis Trypanosoma brucei gambiense Diagnosis SPECIFICITY Rapid diagnostic test Immunoloaical test Molecular test
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Evaluation of Surgical Treatment of Distal Humeral Fractures in Adults
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作者 Abdoulaye camara Karinka Kéita +7 位作者 Mamady Doukouré Abdoul Karim Baldé Léopold Lamah Fatoumata camara Alpha Mamadou Felah Diallo Ibrahima Marie camara Mamadou Madiou Diallo Mamadou Cellou Diallo 《Open Journal of Orthopedics》 2024年第7期287-294,共8页
Introduction: Fractures of the distal end of the humerus are becoming increasingly frequent in young subjects because of the increase in road traffic accidents, and in elderly subjects because of osteoporosis related ... Introduction: Fractures of the distal end of the humerus are becoming increasingly frequent in young subjects because of the increase in road traffic accidents, and in elderly subjects because of osteoporosis related to aging populations. Materials and Methods: It was a prospective, monocentric study from January 2018 to December 2020 involving 14 patients who received and were treated surgically for distal humeral fractures and followed up. Results: We collected 14 patients, including 11 men (78.57%) and 3 women (21.43%), with a sex ratio of 3.7. The mean age was 36.41 years. The circumstances of onset were dominated by road traffic accidents, with 12 cases (85.71%). The dominant side was right-handed, with 11 cases (78.57%). Standard elbow radiography revealed 8 cases of type A fractures (57.14%), 4 cases of type B and 2 cases of type C fractures of the AO. We performed Lecestre plate osteosynthesis in 12 patients and external fixator in 2 others, using the trans-olecranial and transtricipital approaches. Elbow stiffness was the most frequent complication, with 6 cases (42.86%). After six months’ follow-up, our results were excellent and good in 78.57% of cases (MEPS). Conclusion: Surgical treatment with posterior approaches enabled us to achieve restitution of the articular surfaces, solid restraint and early mobilization of the elbow with satisfactory functional results. 展开更多
关键词 FRACTURE Distal Humerus Lecestre Plate External Fixator Trans-Olecranial Transtricipital
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Study of the Chemical and Mineralogical Composition of Kindia Bauxite in the Republic of Guinea: The Case of the Saföfö Site
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作者 Mouctar camara Mamadouba Aboubacar Fofana +4 位作者 Mohamed Dubréka Sylla Alpha Madiou Diallo Aboubacar Diallo Aly Hawa camara Sékou Traore 《Journal of Materials Science and Chemical Engineering》 2024年第10期62-71,共10页
The chemical and mineralogical composition of bauxite deposits is a key factor in the profitability of refining processes. The study of bauxites from the Saföfö site has assessed variations in chemical and m... The chemical and mineralogical composition of bauxite deposits is a key factor in the profitability of refining processes. The study of bauxites from the Saföfö site has assessed variations in chemical and mineralogical composition under various conditions, as well as the optimum conditions for their exploitation. The methodologies used in this study include experimental methods for determining moisture content, chemical composition, mineralogical composition, and specific density of bauxite. The results show significant variation in moisture content among the bauxite samples, with values ranging from 2.90% to 17.80%. The silica percentages in the samples range from 1.69% to 8.14%, while alumina percentages vary from 36.81% to 54.03%. After calcination, alumina oxide percentages range from 40% to 75%. After chemical activation, alumina oxides Al2O3 range from 40% to over 50%. Gibbsite is the most abundant mineral, accounting for about 60% - 70% of the total composition of the bauxite samples. Samples A to F have bulk densities varying between approximately 3.6 and 3.9. Sample B has the highest density, around 3.9, while sample C has the lowest, at around 3.5. Bauxite mining at the Saföfö site offers significant potential for the alumina industry, provided appropriate processing methods are selected to maximize quality and profitability while minimizing environmental impact. 展开更多
关键词 BAUXITE Chemical Composition GUINEA Mineralogy and Saföfö
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Relevance of Medical Imaging in the Pre-Therapeutic Evaluation of Acute Intestinal Obstruction at CIMED
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作者 Mamoudou camara Aly Mampan Koundouno +2 位作者 Siré Nabe Toumin camara Ousmane Aminata Bah 《Open Journal of Medical Imaging》 2024年第1期31-41,共11页
Objective: We initiated this work with the aim of studying the contribution of imaging in the diagnosis of acute intestinal obstruction at CIMED. Patients and methods: This was a prospective, descriptive and analytica... Objective: We initiated this work with the aim of studying the contribution of imaging in the diagnosis of acute intestinal obstruction at CIMED. Patients and methods: This was a prospective, descriptive and analytical study involving 96 patients collected at the radiology and medical imaging department of CIMED, from January 2022 to January 2023. Result: The age of our patients varied between 11 and 86 years with an average age of 36 years. There was a male predominance of 64.6% compared to 35.4% for women, i.e. a sex ratio of 1.82. The notion of previous surgery was found in 61.5% of our patients. Pain was present in all patients. Radiography of the ASP was performed in 89.6% of patients. It showed hydro-aerial levels in 96.5% of patients. Abdominopelvic CT was performed in 12 patients and made it possible to make the diagnosis of occlusion in all patients. The results of the positive diagnosis were concordant with those intraoperatively in 92% of cases. 8% of our patients, compared to the treatment, spontaneously resumed their transit, 91% benefited from surgical treatment and 1% died before surgery. The outcome was favorable in 80 patients or 83.3%, poor with death in 16 patients or 16.7% of cases. Conclusion: Acute intestinal obstruction remains a serious pathology for which ASP radiography often remains the only radiological examination performed urgently. However, abdominopelvic CT seems widely indicated thanks to its contribution both for the positive diagnosis and for the serious and etiological diagnoses. However, this imaging technique is largely underused in our practice due to its high cost and lack of availability. 展开更多
关键词 IMAGING Acute Intestinal Obstruction CIMED
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Contribution of Imagery in the Diagnosis of Multisystemic Sarcoidosis in the Service Radiology Department of the Mother and Child Hospital “Le Luxembourg” in Bamako: A Case Report
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作者 Mariko Mahamane camara Mamoudou +7 位作者 Keita Aboubacar Sidiki N’Diaye Mahamadou camara Mody Abdoulaye Fofana Youssouf Traoré Mohamed Maba Sidibé Siaka Sanogo Souleymane Keita Adama Diaman 《Open Journal of Medical Imaging》 2024年第3期79-85,共7页
The aim of this study was to report a case of multi-visceral sarcoidosis at the Mother-Child Hospital Center (CHME) “Le Luxembourg” in Bamako, Mali. Observation: This is a patient aged 62 at the time of consultation... The aim of this study was to report a case of multi-visceral sarcoidosis at the Mother-Child Hospital Center (CHME) “Le Luxembourg” in Bamako, Mali. Observation: This is a patient aged 62 at the time of consultation, a housewife, residing in the Banconi district, who was referred to us for thoracic-abdominopelvic imaging for chronic liver disease. After several diagnostic errors, the thoracic-abdominopelvic CT scan and liver MRI performed in our center showed, at the thoracoabdominal level, bilateral diffuse pulmonary micronodules and bilateral mediastinal-hilar lymphadenopathy;on the abdominal level, a dysmorphic liver with plaques of steatosis and a granular appearance of the liver parenchyma without periportal fibrosis. These imaging data combined with those from the liver nodule biopsy and biology confirmed the diagnosis of sarcoidosis type II. Treatment with corticosteroids gave satisfactory results and the patient recovered after 18 months. Clinical and CT monitoring 2 years from the start of the disease and 2 months from the end of treatment showed complete resolution of the lesions. Conclusion: The multi-visceral location of sarcoidosis is an entity whose diagnosis remains difficult;diagnostic and interventional imaging has an important place in its management. 展开更多
关键词 SARCOIDOSIS Multi VISCERAL Imaging CHME Luxembourg
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Petrographic and Structural Studies of the Guintéguéla Formations (Northwest of Côte d’Ivoire)
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作者 Mohamed Samuel Moriah Conte N’guessan Nestor Houssou +6 位作者 Oumar Barou Kaba Mohamed Lamine Timite Abdoulaye Kadiatou Diallo Aly Soumah Mohamed camara Mohamed Fofana Djibril M’Mamy camara 《Open Journal of Geology》 CAS 2024年第1期29-49,共21页
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 s... 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. 展开更多
关键词 MINING PETROGRAPHY Structural METAMORPHISM
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Epidemiological and Hemato-Biochemical Profiles of Diabetic Patients at the Diabetology, Endocrinology, and Metabolic Diseases Department of the Alpha Oumar Diallo Regional Hospital, Kindia (Republic of Guinea)
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作者 Fatoumata Bah camara +5 位作者 Ousmane Sangare Elhadji Saidou Balde Karamo Toure Taliby Dos camara Mariama Kourouma César Hagassou 《Journal of Diabetes Mellitus》 CAS 2024年第2期108-121,共14页
This study aims to enhance the healthcare services for diabetic patients in the administrative region of Kindia by suggesting dietary interventions to assist diabetics in better managing their condition. Conducted ove... This study aims to enhance the healthcare services for diabetic patients in the administrative region of Kindia by suggesting dietary interventions to assist diabetics in better managing their condition. Conducted over a period of six months, from February 18 to July 18, 2021, this prospective and descriptive cross-sectional study involved 220 diabetic patients. Among these, 48 patients (22%) maintained balanced glucose levels (2 g/l). Positive glycosuria was observed in 54% of the patients, whereas 46% demonstrated normal glycosuria. An analysis of urinary parameters revealed that 15% of the patients had abnormal Ketone Bodies. Normal HbA1c levels (9%) HbA1c levels. Hematological assessments indicated significant variation: 56% of the patients had low hemoglobin levels, 4% suffered from hyper-eosinophilia, and 1% each from hyper-basophilia and hyper-hemoglobinemia. The anemic profile was characterized as mild anemia in 75%, moderate anemia in 20%, and severe anemia in 5%. Furthermore, 25% of patients were affected by Microcytic anemia and 75% by Normocytic anemia. Demographically, women constituted 65% of the study group compared to 35% of men. The most represented age bracket was 41 to 60 years, accounting for 52% of the patients, while those between 61 and 80 years comprised 36%. Every district in Kindia was impacted by diabetes. 展开更多
关键词 Epidemiology Diabetes Glucose Levels GLYCOSURIA Metabolic Disorders Kindia
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Screening, Treatment and Control of High Blood Pressure on Five Sites in Mali
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作者 Mamadou Touré Sagara Ibrahima +19 位作者 Youssouf camara Hamidou Oumar Ibrahima Sangaré Djénébou Traoré Noumou Sidibé Fousseyni Samassékou Massama Konaté Coumba Thiam Doumbia Asmaou Maiga Réné-Marie Dakouo Hamidou camara Sako Mariam Sidibé Samba Adama Sogodogo Boubacar Diarra Boubacar Sonfo Aladji Traoré Mamadou Diakité Ilo Bella Diall Ichaka Menta 《World Journal of Cardiovascular Diseases》 CAS 2024年第5期322-332,共11页
Introduction: High blood pressure is defined as blood pressure greater than or equal to 140 mm Hg for systolic and or 90 mm Hg for diastolic. It constitutes a major public health problem, the leading chronic disease i... Introduction: High blood pressure is defined as blood pressure greater than or equal to 140 mm Hg for systolic and or 90 mm Hg for diastolic. It constitutes a major public health problem, the leading chronic disease in the world. The objective was to determine the prevalence, treatment rate and control of hypertension. Methods: This was a cross-sectional and descriptive study which took place over a period of 6 months in a hospital environment and in the general population. Results: Of the 1000 participants, 637 had hypertension, giving a prevalence of 63.70% with a female predominance. Thirty-three percent (33%) were unaware of their high blood pressure. The age group 60 and more was the most represented (44%). A proportion of 33 and 23.20 were overweight and obese participants, respectively. Male subjects were more overweight than female, unlike obesity which was more common among female subjects. Sixty-two percent (62%) of hypertensives were treated, of whom 44% were non-compliant. The excessively high cost and consumption of medications as needed were the main factors in therapeutic non-compliance. Twenty-two percent (22%) of all hypertensive patients and 35% of treated hypertensive patients were controlled. Women were more treated but less observant and less controlled than men. Therapeutic coverage and combination therapy rates were lower in rural areas. Hypertensives who had a high level of education were better treated and controlled than those who had no level. Conclusion: High blood pressure remains a real public health problem in Mali. It is more common in people aged 60 and over and in females. One in three hypertensives were unaware of their hypertension. The majority received antihypertensive treatments, but only a minority of them had their hypertension controlled. 展开更多
关键词 High Blood Pressure SCREENING Control Rate MALI
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Therapeutic Compliance of Hypertensive Patients Followed in Ambulatory in the Cardiology Department of Kati University Hospital
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作者 Boubacar Sonfo Coumba Thiam +17 位作者 Mariam Sako Massama Konaté Youssouf camara Mamadou Touré Boubacar Diarra Diakaridja Sacko Samba Sidibé Bassan Diarra Hamidou camara Asmaou Keita Konimba Diarra Hamidou Oumar Ibrahima Sangaré Youssouf Guindo Sanoussi Daffe Daouda Fofana Souleymane Coulibaly Ichaka Menta 《World Journal of Cardiovascular Diseases》 CAS 2024年第5期333-342,共10页
Introduction: High blood pressure is a major public health problem worldwide due to its frequency and cardiovascular complications. Adherence to treatment for chronic diseases is a global problem. The aim was to study... Introduction: High blood pressure is a major public health problem worldwide due to its frequency and cardiovascular complications. Adherence to treatment for chronic diseases is a global problem. The aim was to study therapeutic adherence in hypertensive patients followed in ambulatory. Materials and Methods: This was a cross-sectional, descriptive study with prospective recruitment that took place from July 1 to December 31, 2022 (6 months) in the cardiology department of the university hospital of Kati. The variables studied were sociodemographic data, cardiovascular risk factors, comorbidities, the possession of insurance and compliance (the Girerd questionnaire was used to assess adherence). Results: A total of 1182 patients were consulted, including 887 for hypertension, a frequency of 75%. Fifty-six patients were included in the study. The average age was 58.18 ± 13.25 years with extremes of 30 and 80 years. There was a female predominance (75%) with a sex ratio of 0.3. The majority of patients lived in urban areas (89.3%). Out-of-school patients accounted for 44.6%, more than half of patients or 55.4% had no income, patients with medical coverage accounted for 67.9% of cases. The main risk factors were physical inactivity (25%) followed by smoking 14.3%. More than 71% of patients had a compliance problem and the main reasons were forgetting to take the drug with 73.2%, followed by delayed treatment of 50% and drug discontinuation of 28.6%. Conclusion: Compliance is a real challenge and a major public health issue. This study allowed us to find a real problem of compliance in our hypertensive patients. There was a statistically significant relationship between drug adherence and forgetting to take the drug and drug discontinuation. 展开更多
关键词 HYPERTENSIVE Therapeutic Adherence University Hospital of Kati
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