检索结果-南通市图书馆

Molecular Characterization and Prevalence of Trypanosoma Species in Cattle from a Northern Livestock Area in Cote d’Ivoire

引用

Open Journal of Veterinary Medicine 2014年第12期4卷 314-321页

作者： Isidore Kpandji Kouadio Didier Sokouri Mathurin koffi Ibrahim Konate Bernadin Ahouty alain koffi Simon Pierre N’Guetta Laboratoire de Genetique UFR BiosciencesUniversite Felix Houphouet BoignyAbidjanCote d’Ivoire Laboratoire des Interaction Hote-Microorganisme-Environnement et Evolution Universite Jean Lorougnon GuedeDaloaCote d’Ivoire Centre Suisse de Recherches Scientifiques en Cote d’Ivoire AbidjanCote d’Ivoire Institut Pierre Richet Unite de Recherche TrypanosomosesBouakeCote d’Ivoire

Background: African animal trypanosomiasis (AAT) is caused mainly by Trypanosoma congolense, T. vivax, and T. brucei brucei and is the major constraint for livestock productivity in Sub-Saharan African countries. Information about animal trypanosomiasis status in Ivory Coast is missing, especially regarding molecular epidemiology. Therefore, this study intended to apply molecular tools to identify and characterize trypanosomes in Ivory Coast for sustainable control. Methods: 363 cattle blood samples were collected from Ferkessedougou Region in northern Ivory Coast in 2012. Buffy coat technique (BCT) and species-specific PCR assays were used to detect trypanosome species. Results: Out of 363 cattle examined with BCT, 33 were found positive with all trypanosomes species accounting for an average of 9.09% prevalence whereas polymerase chain reaction (PCR) using species-specific primers showed that 81 out of 363 cattle were infected with trypanosomes with an overall prevalence of 22.31%. Trypanosoma congolense savanah type, T. Vivax and T. brucei sl. accounted for 28.39%, 49.38% and 23.45% of the infection rate respectively. No infection with T. congo forest?type was detected. T. vivax infection was the most prevalence in the area investigated compared to the two other trypanosome species. Mixed infections with different trypanosomes species were detected accounting for 7.32% of prevalence. Regarding sexrelated prevalence, male cattles were slightly more infected than female but the difference was not significant. Conclusion: Our results showed that there was a high prevalence of AAT in livestock in Ferkessedougou Area. There is therefore a need to strengthen control policies and institute measures that help prevent the spread of the parasites for sustainable control of animal trypanosome in this area.

关键词： Animal African Trypanosomiasis Molecular Diagnosis Species-Specific PCR Cote d’Ivoire

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Geochemistry of Micas from Issia Granite Complexe: A Marker of Geodynamic Evolution

引用

Open Journal of Geology 2024年第8期14卷 787-804页

作者： koffi Joseph Brou alain Nicaise Kouamelan koffi Raoul Teha Universit Flix Houphout-Boigny (UFHB) Abidjan Cte dIvoire

The granites and pegmatites located in the southern part of the Issia region, near the columbo-tantaliferous placers, are characterized by the presence of rare metals such as beryl, lithium and Nb-Ta oxides. They mainly consist of micas, quartz, plagioclase and potassium feldspar. The work carried out on the micas of these granites and pegmatites (EPMA analyses) has provided new geochemical data contributing to the understanding of the magmatic evolution of the Issia granite complex. Mineralogically, the most evolved G3 granites are characterized by their abundance of muscovite compared to biotite and the presence of pegmatite veins. Geochemically, the muscovites of the G1 and G2 granites are more ferriferous than those of the G3 granites, however, the latter display higher Na contents than the G2 and G3. The muscovites of the granites show an evolution from the pure muscovite series to the zinnwaldite series (micas of the pegmatites) which are lithium-bearing micas. The mineralogical and chemical data of the micas show that they are S-type peraluminous granites and demonstrate the formation of granites and pegmatites through fractional crystallization of the same parental magma.

关键词： G3 Granites Peraluminous Granites Rare Metals Fractional Crystallization

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Magma Mixing Genesis of the Mafic Enclaves and Related Granitoids in the Kan Granite-Gneiss Complex of Central Côte d’Ivoire: Evidence from Geology, Petrology and Geochemistry

引用

Open Journal of Geology 2024年第8期14卷 760-786页

作者： koffi Raoul Teha koffi Kossonou Jean-Marie Pria koffi Joseph Brou alain Nicaise Kouamelan Marc Ephrem Allialy Souad M’Rabet Mineral and Energy Resources Laboratory (LGRME) Flix Houphout-Boigny University Abidjan Ivory Coast Environmental Sciences and Technology Laboratory Department of Earth Sciences Jean Lorougnon-Guede Daloa University Daloa Ivory Coast Laboratory of Geosciences and Environment Department of Geology Ibn Tofal University of Knitra Knitra Morocco

The mafic enclaves from Paleoproterozoic domain are considered to be the results of large-scale crust-mantle interaction and magma mixing. In this paper, petrography, mineralogy and geochemistry were jointly used to determine the origin of the mafic enclaves and their relationship with the host granitoids of the Kan granite-gneiss complex. This study also provides new information on crust-mantle interactions. The mafic enclaves of the Kan vary in shape and size and have intermediate chemical compositions. The diagrams used show a number of similarities in the major elements (and often in the trace elements) between the mafic enclaves and the host granitoids. Geochemical show that the Kan rock are metaluminous, enriched in silica, medium to high-K calc-alkaline I-type granite. The similarities reflect a mixing of basic and acid magma. Mafic enclaves have a typical magmatic structure, which is characterized by magma mixing. The genesis of these rocks is associated with the context of subduction. They result from the mixing of a mafic magma originating from the mantle and linked to subduction, and a granitic magma (type I granite) that arises from the partial melting of the crust.

关键词： Magma Mixing Mafic Microgranular Enclaves Host Granitoids Kan Granite-Gneiss Complex West Africa

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Barcelona Clinic Liver Cancer Classification and Treatment of Hepatocellular Carcinoma in a Côte d’Ivoire University Hospital

引用

Open Journal of Gastroenterology 2023年第10期13卷 319-327页

作者： Kissi Anzouan-Kacou Henriette Ya Bangoura Aboubacar Demba Kouame Dimitri Doffou Stanislas Adjeka Mahassadi Kouame Alassan Yao Bathaix Fulgence Mamert Attia alain koffi Medical Sciences Training and Research Unit of Abidjan Félix Houphou&eumlt-Boigny University Abidjan C&ocircte d’Ivoire Hepatology and Gastroenterology Unit Yopougon University Hospital Abidjan C&ocircte d’Ivoire

Context/Objectives: Hepatocellular carcinoma occurs mainly and increasingly in developing countries, where the prognosis is particularly poor. The Barcelona Clinic Liver Cancer classification is used to guide the treatment of hepatocellular carcinoma. The aim of this retrospective study was to describe the Barcelona Clinic Liver Cancer classification and the treatment of hepatocellular carcinoma in a University Hospital in Côte d’Ivoire. Methods: Patients with hepatocellular carcinoma hospitalized in the hepato-gastroenterology unit of the University Hospital of Yopougon from 01 January 2012 to 30 June 2017 were included. The diagnosis of hepatocellular carcinoma was based on the presence of hepatic nodules on the abdominal ultrasound scan, typical images with the helical scanner associated or not with an increase of the α-fetoprotein higher than 200 ng/ml or with histology. Demographic, clinical, biological and radiological data were determined at the time of diagnosis. Patients were classified according to the Barcelona Clinic Liver Cancer classification. Their treatment was specified. Results: There were 258 patients whose median age was 48.1 years. Viral hepatitis B virus was the primary cause of hepatocellular carcinoma in 64.7% of cases. The severity of the underlying cirrhosis was Child-Pugh A in 12.1%, B in 63.6% and C in 24.3% of cases. The median size of the tumor was 63 mm. The α-fetoprotein level was higher than 200 mg/ml in 56.03% of cases. The Eastern Cooperative Oncology Group (ECOG)/World Health Organization (WHO) system was ≥2 in 82.9%. The Barcelona Clinic Liver Cancer classification was A in 1.3%, B in 0%, C in 55.2% and D in 43.5% of patients. There was no transplantation or hepatic resection. Very few patients (1.9%) received radio-frequency curative therapy. The treatment was predominantly symptomatic in 97.8% of patients. During hospitalization 43.7% of patients died. Conclusion: Hepatocellular carcinoma occurs on a liver with severe cirrhosis

关键词： Hepatocellular Carcinoma Barcelona Clinic Liver Cancer Classification Viral Hepatitis B Africa

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Lithostructural Control of the Gold Mineralization of the Douta Permit of African Star Resources (Kédougou-Kéniéba Inlier, Southeastern Senegal)

引用

International Journal of Geosciences 2024年第4期15卷 303-333页

作者： Masse Ndour Papa Moussa Ndiaye koffi Félix Ekra alain Ndong Malick Faye Pierre Ndour African Star Resources Yoff Dakar S&#233n&#233gal Dé partement de G&#233ologie Universit&#233 Cheikh Anta Diop Dakar S&#233n&#233gal

The Douta permit of African Star Resources/Thor Explorations, located in the southeast of Senegal, in the Kédougou-Kéniéba Inlier (western part of the West African Craton), is dominated to the East by metasedimentary formations such as greywackes, shales, graphitic shales, quartzites, cherts, claystones and breccias characteristic of the Dialé-Daléma basin. To the West, the mafic formations of the Mako volcanic belt are the most common. Metasedimentary rocks are associated with metavolcanosedimentary terms found at the contact zones between the two (2) Birimian groups. These different geological formations are cut by mafic dolerite and gabbro sills and/or dykes, as well as quartz and microgranite veins. The Douta gold project is crossed from North to South by the MTZ (Main Transcurrent Zone), generally oriented NE-SW and becoming N-S towards the North. The permit is characterized by several shear corridors. The rocks are affected by brittle, brittle-ductile to ductile deformations. The gold mineralization is hosted by a NE-trending shear corridor called the Makosa corridor (Makosa shear zone), therefore sub-parallel to the MTZ. It has a subvertical dip (75˚ to 85˚ to the NW). It is associated with a hydrothermal phase characterized by quartz-sericite-epidote-fine, disseminated pyrite and arsenopyrite ± albite ± chlorite paragenesis. These minerals testify to the existence of a low degree of metamorphism (greenschist facies, epizonal domain) in the area. However, metamorphism reaches amphibolite facies in some places, particularly in the vicinity of intrusive bodies, with the presence of hornblende (amphiboles) and plagioclase. The gold mineralization is mainly hosted by two (2) metasedimentary lithological units: meta-greywackes and shales.

关键词： Douta Kédougou-Kéniéba Inlier Senegal Metasedimentary MTZ Control Gold Mineralization Makosa Corridor

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Upper Gastrointestinal Endoscopy and Children Digestive Pathology in Abidjan

引用

Open Journal of Gastroenterology 2016年第10期6卷 265-274页

作者： Aboubacar Demba Bangoura Henriette Ya Anzouan Kissi-Kacou Stanislas Doffou Constant A ssi Mamert Fulgence Yao Bathaix alain koffi Attia Aya Thérèse Ndri-Yoman Hepatogastroenterology Unit Yopougon Teaching Hospital Yopougon Ivory Coast Hepatogastroenterology Unit Cocody Teaching Hospital Cocody Ivory Coast

The aim of our study is to determine the demographic data, indications, performance, and security of gastroscopy in children in Ivory Coast. Patients and Methods: This is a retrospective analytical study based on reports of upper digestive endoscopy per-formed in children (from 1 day to 15 years included) in 2 university hospitals in Abid-jan from March 2009 to March 2016. Results: 276 upper gastrointestinal endoscopies (UGIE) were performed in children during the study period. UGIE was performed with a diagnostic purpose in most cases (99%). The indications of UGIE were abdominal pains (38.95%), ingestion of caustic substances (29.82%), upper gastrointestinal bleeding (10.87%) and vomiting (10.17%). UGIE was normal in 39.49% of cases for all ages. The main anomalies observed in upper gastrointestinal (GI) endoscopy for all ages were gastropathies (29%);caustic lesions (13.02%) and bile reflux (10.45%). Ul-cers were rarely found (2.54%). Histological examination of biopsies revealed chronic H. pylori gastritis in 67% of gastric samples examined. All endoscopic examinations were performed without incident. Conclusion: Gastroscopy is a harmless examination with a great diagnostic and therapeutic utility in digestive pathology of children in Ivory Coast.

关键词： Upper Gastrointestinal Endoscopy Children Abidjan Ivory Coast

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Factors Associated with Hepatic Steatosis in Black African Subjects with Chronic Viral Hepatitis B in Côte d’Ivoire

引用

Open Journal of Gastroenterology 2023年第10期13卷 328-337页

作者： Kouamé Hatrydt Guillaume Dimitri Kissi Anzouan-Kacou Henriette Ya Gogan Patricia Bangoura Aboubacar Demba Doffou Stanislas Adjeka Mahassadi Kouame Alassan Yao Bathaix Fulgence Mamert Attia alain koffi Medical Sciences Training and Research Unit of Abidjan Félix Houphou&eumlt-Boigny University Abidjan C&ocircte d’Ivoire Hepatology and Gastroenterology Unit Yopougon University Hospital Abidjan C&ocircte d’Ivoire

Context/Objectives: With the progression of the global epidemic of obesity and metabolic syndrome, the coexistence of hepatic steatosis in patients with chronic viral hepatitis B (VHB) is becoming significant. The aim of this work was to determine the factors associated with hepatic steatosis assessed by a Fibroscan with Controlled Attenuation Parameter (CAP) in patients with chronic viral hepatitis B in Côte d’Ivoire. Methods: This was a cross-sectional and analytical study. Data was collected from February 15 to July 31, 2020 in a private hospital structure in the city of Abidjan in Côte d’Ivoire. We included 83 patients with chronic viral hepatitis B. These were black patients, having performed a Fibroscan/CAP during the recruitment period and consenting to participate in the study. Patients with significant alcohol consumption, a secondary cause of hepatic steatosis, or other liver disease regardless of the etiology associated with hepatitis B were not included. Results: The frequency of hepatic steatosis in chronic VHB carriers assessed by the CAP in our study population was 48.19% including 24.10% severe steatosis. Obesity and high LDL cholesterol were statistically correlated with the presence of steatosis in our patients. Patients who had steatosis on ultrasound were 5 times more likely to have steatosis on CAP. Significant fibrosis was not significantly associated with steatosis. Conclusion: Obesity and LDL hypercholesterolemia are the main factors associated with hepatic steatosis detected by Fibroscan/CAP in patients with chronic viral hepatitis B.

关键词： Non-Alcoholic Fatty Liver Disease Chronic Viral Hepatitis B Obesity Metabolic Syndrome Fibroscan/CAP Africa

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Liver Transient Elastography Combined to Platelet Count (Baveno VI) Predict High Esophageal Varices in Black African Patient with Compensated Hepatitis B Related Cirrhosis

引用

Open Journal of Gastroenterology 2018年第5期8卷 192-200页

作者： Doffou Adjeka Stanislas Assi Constant Ndjitoyap Ndam Antonin Wilson Kouame Hardryt Dimitri Bangoura Demba Kissi Anzouan-Kacou Ouattara Amadou Lohoues-Kouacou Marie-Jeanne Attia koffi alain Gastrointestinal Unit Cocody Teaching Hospital CenterAbidjanCote d’Ivoire Gastrointestinal Unit Yopougon Teaching Hospital CenterAbidjanCote d’Ivoire

Aim: To assess the predictive value of the Baveno VI criteria for the diagnosis of large esophageal varices (EV) in Black African patient with compensated hepatitis B related cirrhosis. Methods: We carried out a cross-sectional study from January 2 to July 3 (2016), in Department of Gastroenterology at University Hospitals of Cocody (CHUC) and Yopougon (CHUY). All the black African patients included were more than 15 years old and their liver elasticity score (LES) was carried out at Yopougon University Hospital. Hepatitis B related cirrhosis was defined by LES ≥ 11 kPa (FibroScan? (Echosens, France)) with positive HBs antigen (HBsAg) and anti HBc antibody. All the patients with hepatitis B related cirrhosis performed a gastroscopy at Cocody University Hospital and esophageal varices were ranked according to société fran?aise d’endoscopie digestive (SFED) classification. Data analysis was performed by SPSS model 20.0 statistics software (SPSS Inc., Chicago, IL, United States). Diagnostic performance of LES 150,000/mmm3 (Baveno VI criteria) for the diagnosis of large EV by gastroscopy was studied (area under the ROC curve, specificity (Sp), sensitivity (Se), positive predictive value (PPV) and negative predictive value (NPV). Results: During the study period, 720 patients achieved liver FibroScan? at CHUY. Of these, 60 respondents to our inclusion criteria were prospectively included in our study. Twelve (20%) of these 60 patients met the Baveno VI criteria. EV were present in 40% of cases (n = 24) with 6.7% (n = 4), 15% (n = 9) and 18.3% (n = 11) of grade 1, 2 and 3, respectively. (66.7% (n = 40) without EV or with small EV) and 33.3% (n = 20) with large EV. The Baveno VI criteria had a Se, Sp, PPV and NPV of 100%, 41.6%, 30% and 100% respectively for the diagnosis of large EV. The area under the ROC curve of a platelet count greater than 150,000/mm3, a liver elasticity score of less than 20 kPa and combination of both were respectively 0.763 [0.645 - 0.880;P = 0.27

关键词： Cirrhosis Esophageal Varice-Fibroscan^(█)-Baveno Negative Predictive Value Africa

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Diagnostic accuracy of biochemical markers of fibrosis in black African patients with chronic hepatitis B

引用

Health 2010年第12期2卷 1413-1420页

作者： Alassan Kouamé Mahassadi alain koffi Attia Fulgence M. Yao Bathaix Narcisse Baudouin Agbé Stanislas Doffou Henriette Ya Kissi Isidore Mouhenou Diomandé Paul Cales Thérese Ndri-Yoman 不详

Contradictory results of the accuracy of bio-chemical markers to predict the stage of fibrosis in black African patients with chronic hepatitis B (CHB) were previously published. We con-ducted a prospective cohort study to determine the diagnostic accuracy of aspartate ami-notransferase to platelet ratio (APRI), aspartate aminotransferase to alanine aminotransferase ratio (AAR), platelet count, age-platelet (AP) in-dex, and FIB-4 index for the prediction of sig-nificant fibrosis or cirrhosis in 117 black African patients (median age: 38 years, males: 73 %) with CHB not previously treated. Among them, 45 had significant fibrosis and 18 had cirrhosis using the METAVIR score system. Factors as-sociated either with significant fibrosis or cir-rhosis were determined in logistic multivariate analysis. Areas under receiver operating curve were assessed and compared for APRI, AAR, AP index, FIB-4 index and platelet count. Sensitivity, specificity, positive and negative predictive values were determined for each biochemical markers. Multivariate analysis showed that as-partate aminotransferase (p 1.1) and FIB-4 index (cut-off > 2.1) ruled out significant fibrosis with high specific-ity of 84.7 % and 86.1 % respectively and nega-tive predictive values of 78.2 % and 72.9 % re-spectively. More accurately, APRI (cut-off > 0.63) or FIB-4 index (cut-off > 1.26) ruled out cirrhosis with high sensitivity of 94.4% and 88.9% and high negative predictive values of 98.1% and 96.3% respectively. In conclusion, APRI and FIB-4 index are simple readily available markers to exclude significant fibrosis or more accu-rately cirrhosis in black African patients with CHB.

关键词： Non Invasive Models Fibrosis Cirrhsis Hepatitis B Sub-Saharan Africa

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Virological profile of hepatitis B infection in Black African HBsAg chronic carriers

引用

Open Journal of Gastroenterology 2013年第2期3卷 113-118页

作者： koffi alain Attia Stanislas Doffou Ya Henriette Kissi Demba Bangoura Seka Mondesir Pianiza Kouame Alassan Mahassadi Fulgence Yao Bathaix Mohamed Sayegh Thérèse N’dri-Yoman Clinique Médicale Danga Cocody Abidjan Cote d’Ivoire Service de Médecine et d’Hépato-Gastroentérologie CHU Yopougon Abidjan Cote d’Ivoire

Aims: 1) Describe virological profile of patients followed-up for chronic Hepatitis B virus (HBV);2) Search for a correlation between cirrhosis and virological profile of patients. Patients and Methods: Retrospective study about 75 HBsAg positive patients followed-up for at least one year in two medical structures of Abidjan. Studied parameters: clinical signs, biological check-up (serum transaminases every 3 months for at least one year, platelets count and prothrombin rate), abdominal echography, virological check-up (HBsAg, HBeAg, anti-HBe, total anti-HBc, anti-VHC and anti- HIV Ab, HBV DNA biannual quantification during at least one year). Histological or biochemical evaluation of hepatic activity and fibrosis were realized in case of transaminases elevation or HBV DNA > 2000 IU/ml. Results: The mean age of our 75 patients (54 men) was 42.1 ± 11.54 years. HBV was fortuitously discovered in most of our patients (74.7% of the cases). The HBV inactive chronic carriage was 50.7%;HBeAg-positive and HBeAg-negative chronic hepatitis represented respectively 9.3% and 40% of the cases. Mean B viral load was 327.5 IU/ml in HBV inactive chronic carriers, 44,047,663 IU/ml in HBeAg-positive chronic HBV and 20,231,822 IU/ml in HBeAg-negative chronic HBV. Cirrhosis prevalence was significantly high- er in positive or negative HBeAg chronic HBV than in HBV inactive chronic carriers (32.4% vs. 5.3%, p = 0.008;OR = 8.6). Conclusion: Our patients’ virological profile was dominated by HBeAg-negative chronic HBV and HBV inactive chronic carriage. The risk of having cirrhosis was multiplied by 8.6 in case of active chronic hepatitis compared with HBV inactive chronic carriage.

关键词： Hepatitis B Virus Virological Profile Cirrhosis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：