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Levels of insecticide resistance to deltamethrin,malathion,and temephos,and associated mechanisms in Aedes aegypti mosquitoes from the Guadeloupe and Saint Martin islands(French West Indies)

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Infectious Diseases of Poverty 2017年第1期6卷 339-353页

作者： Daniella Goindin christelle delannay Andric Gelasse Cedric Ramdini Thierry Gaude Frederic Faucon Jean-Philippe David Joël Gustave Anubis Vega-Rua Florence Fouque Laboratory of Medical Entomology Unit Environment and HealthPasteur Institute of Guadeloupe97183 Les AbymesGuadeloupe Vector control Service Regional Health AgencyDothemareLes AbymesGuadeloupe Alpine Ecology Laboratory(LECA) CNRSUMR 55532233 rue de la piscine BP5338041 GrenobleCedex 9France University of Grenoble Alpes GrenobleFrance Environmental and Systems Biology(BEeSy) University of Grenoble AlpesGrenobleFrance Vector Environment and Society Unit Special Programme for Research and Training in Tropical Diseases(TDR)World Health Organization20Avenue AppiaCH-1211 Geneva 27Switzerland

Background:In the Guadeloupe and Saint Martin islands,Aedes aegypti mosquitoes are the only recognized vectors of dengue,chikungunya,and Zika *** around 40 years,malathion was used as a mosquito adulticide and temephos as a *** the European Union banned the use of these two insecticide molecules in the first decade of the 21st century,deltamethrin and Bacillus thuringiensis *** are the remaining adulticide and larvicide,respectively,used in *** order to improve the management of vector control activities in Guadeloupe and Saint Martin,we investigated *** resistance to and mechanisms associated with deltamethrin,malathion,and ***:*** mosquitoes were collected from six different localities of Guadeloupe and Saint *** were used for malathion and temephos bioassays,and adult mosquitoes for deltamethrin bioassays,following World Health Organization *** resistance(Kdr)genotyping for V1016I and F1534C mutations,and expression levels of eight enzymes involved in detoxification mechanisms were examined in comparison with the susceptible reference Bora Bora ***:Resistance ratios(RR50)calculated for *** larvae showed high resistance levels to temephos(from 8.9 to 33.1-fold)and low resistance levels to malathion(from 1.7 to 4.4-fold).Adult females displayed moderate resistance levels to deltamethrin regarding the time necessary to affect 50%of individuals,varying from 8.0 to *** investigations on adult mosquitoes showed high resistant allele frequencies for V1016I and F1534C(from 85 to 96%and from 90 to 98%,respectively),as well as an overexpression of the glutathione S-transferase gene,GSTe2,the carboxylesterase CCEae3a,and the cytochrome genes 014614,CYP6BB2,CYP6M11,and ***:*** populations from Guadeloupe and Saint Martin exhibit multiple resistance to organophosphates(temephos and malathion),and pyrethroids(deltamethrin

关键词： Aedes aegypti Mosquitoes Insecticide resistance Deltamethrin Malathion Temephos Guadeloupe Saint Martin

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NRF2 signaling cascade in amyotrophic lateral sclerosis:bridging the gap between promise and reality

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Neural Regeneration Research 2024年第5期19卷 1006-1012页

作者： Pauline Tarot christelle Lasbleiz Jean-Charles Liévens MMDN Univ MontpellierEPHEINSERMMontpellierFrance CNRS ParisFranceEPHEINSERMMontpellierFrance

Amyotrophic lateral sclerosis is a very disabling disease due to the degeneration of motor *** include muscle weakness and atrophy,spasticity,and progressive ***,there is no treatment to reverse damage to motor neurons and cure amyotrophic lateral *** only two treatments actually approved,riluzole and edaravone,have shown mitigated beneficial *** difficulty to find a cure lies in the complexity and multifaceted pattern of amyotrophic lateral sclerosis *** mechanisms,abnormal RNA metabolism,nucleocytoplasmic transport defects,accumulation of unfolded protein,and mitochondrial dysfunction would in fine induce oxidative damage and vice versa.A potent therapeutic strategy will be to find molecules that break this vicious *** the nuclear factor erythroid-2 related factor 2 signaling may fulfill this objective since nuclear factor erythroid-2 related factor 2 has a multitarget profile controlling antioxidant defense,mitochondrial functioning,and *** here discuss the interest of developing nuclear factor erythroid-2 related factor 2-based therapy in regard to the pathophysiological mechanisms and we provide a general overview of the attempted clinical assays in amyotrophic lateral sclerosis.

关键词： amyotrophic lateral sclerosis C9orf72 NRF2 oxidative defense oxidative stress sulforaphane superoxide dismutase 1 TDP43

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Experimental Study and Thermal Modelling of Cocoa Shell Convective Drying in an Indirect Solar Dryer

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Modeling and Numerical Simulation of Material Science 2024年第2期14卷 69-78页

作者： Siaka Touré Adjo christelle Ogo Modibo Sidibé Solar Energy Laboratory FHB University of Cocody Abidjan C&#244te d’Ivoire

The concern of the present work is the convective drying of empty cocoa shells in an indirect solar dryer. Some drying experiments, using one sample, were carried out. During the experiments, the sample is introduced in the drying chamber. Then at steady time intervals, the sample is withdrawn from the drying chamber, for a rapid weighing. After each weighing, the sample is reintroduced in the dryer. At each time interval, the ambient temperature of the drying chamber and its relative humidity γ are measured by a thermo-hygrometer. From the experimental data, a theoretical determination of the moisture evaporated from the product was performed and a good agreement was found between the theoretical and experimental values, confirmed by the value of the RMSE. Those calculations used the constants in the Nusselt number found in literature. Then those constants were evaluated again, to get new values more suitable with the experimental data. The dimensionless numbers of Nusselt, Grashof and Prandtl were calculated. That allowed the calculation of the average value of the Nusselt number. The average convective heat transfer coefficient was determined.

关键词： Shells of Cocoa Pods Indirect Solar Dryer Moisture Evaporated Constants of the Nusselt Number Convective Heat Transfer Coefficient

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Trade-offs between the accumulation of cuticular wax and jasmonic acid-mediated herbivory resistance in maize

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Journal of Integrative Plant Biology 2024年第1期66卷 143-159页

作者： Jiong Liu Lu Li Zhilong Xiong christelle AMRobert Baozhu Li Shan He Wenjie Chen Jiasheng Bi Guanqing Zhai Siyi Guo Hui Zhang Jieping Li Shutang Zhou Xi Zhang Chun‐Peng Song School of Life Sciences Henan UniversityKaifeng 475004China State Key Laboratory of Crop Stress Adaptation and Improvement Henan UniversityKaifeng 475004China State Key Laboratory of Cotton Bio‐Breeding and Integrated Utilization Henan UniversityKaifeng 475004China Sanya Institute of Henan University Sanya 572025China Institute of Plant Sciences University of BernBern 3013Switzerland

Plants have evolved complex physical and chemical defense systems that allow them to withstand herbivory *** of a complex mixture of very-long-chain fatty acids(VLCFAs)and their derivatives,cuticular wax constitutes the first physical line of defense against ***,we report the function of Glossy 8(ZmGL8),which encodes a 3-ketoacyl reductase belonging to the fatty acid elongase complex,in orchestrating wax production and jasmonic acid(JA)-mediated defenses against herbivores in maize(Zea mays).The mutation of GL8 enhanced chemical defenses by activating the JA-dependent *** observed a trade-off between wax accumulation and JA levels across maize glossy mutants and 24 globally collected maize inbred *** addition,we demonstrated that mutants defective in cuticular wax biosynthesis in Arabidopsis thaliana and maize exhibit enhanced chemical *** transcriptomic and lipidomic analyses indicated that the gl8 mutant confers chemical resistance to herbivores by remodeling VLCFA-related lipid metabolism and subsequent JA biosynthesis and *** results suggest that VLCFA-related lipid metabolism has a critical role in regulating the trade-offs between cuticular wax and JA-mediated chemical defenses.

关键词： cuticular wax fall armyworm herbivore resistance jasmonic acid maize plant-herbivore interactions

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Epidemiological, Clinical, Therapeutic and Evolutive Profile of Primary Open-Angle Glaucoma in a Cameroonian Population

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Open Journal of Ophthalmology 2024年第2期14卷 93-102页

作者： christelle Domngang Fabiola Makamwe Tagne Leonard Tedong Chantal Ngoune Nanfack Caroline Mvilongo Giles Kagmeni Higher Institute of Health Sciences Université des Montagnes Bangangté Cameroon Faculty of Medicine and Biomedical Sciences University of Yaounde 1 Yaounde Cameroon

Background: Sub-Saharan Africa has the highest prevalence of primary open-angle glaucoma (POAG), at 4.2%. The efficacy of medical treatment has been demonstrated and remains one of the treatments of choice for POAG. However, in sub-Saharan Africa, its effectiveness has many challenges, due to multiple factors, including cost and access to care. Thus, the present study aimed to determine the epidemiological, clinical, therapeutic and evolutive profile of primary open-angle glaucoma patients. Methodology: A descriptive cross-sectional study was carried out in two hospitals in western Cameroon. Epidemiological, clinical, therapeutic, and evolutionary data on intraocular pressure at one year after medical treatment were analyzed. SPSS version 23 software was used for statistical analysis, with a significant p-value set at 5%. Results: A total of 201 patients with POAG were included in the study. The population comprised 100 men and 101 women, with a mean age of 54 ± 12 years. At diagnosis, the mean intraocular pressure was 23.9 ± 8.70 mmHg for the right eye and 25.5 ± 9.57 mmHg for the left eye. The mean cup/disc ratio was 0.64 ± 0.2 [0.2-1] and 0.67 ± 0.19 [02-1] in the right and left eyes, respectively. Monotherapy was the most prescribed treatment [59.2%]. After one year of treatment, intraocular pressure was reduced by 15.5% with beta-blockers, 23.66% with prostaglandins, 19.11% with carbonic anhydrase inhibitors, 35, 92% with beta-blockers and carbonic anhydrase inhibitors, 25.92% with beta-blockers and prostaglandins, 48.03% with carbonic anhydrase inhibitors and prostaglandin agonists, and 38.77% with triple therapy. Taking glaucoma severity into account, a significant reduction in intraocular pressure at one year was observed in all participants [p 0.05]. However, the target pressure was obtained in 47%, 20% and 14% of eyes suffering of mild, moderate, and severe grade of POAG respectively. Conclusion: In the present study, there was a significant reduction in i

关键词： Primary Open-Angle Glaucoma Medical Treatment Intraocular Pressure Target Intraocular Pressure

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Breast Cancer in a Supernumerary Breast at the Yaoundé Gynaeco-Obstetric and Paediatric Hospital: About a Case

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Advances in Breast Cancer Research 2024年第3期13卷 43-48页

作者： Michel Auguste Mouelle Sarah Gaëlle Adiang Esther Meka Isidore Tompeen christelle Djapa Claude Hector Mbia Yann Eng Julius Sama Dohbit Zacharie Sando Oncology Department of the Yaound Gynaeco-Obstetric and Paediatric Hospital Yaound Cameroon Faculty of Medicine and Biomedical Sciences of Yaound University of Yaound I Yaound Cameroon Obstetrics and Gynaecology Department of the Yaound Gynaeco-Obstetric and Paediatric Hospital Yaound Cameroon Radiology and Medical Imaging Department of the Yaound Gynaeco-Obstetric and Paediatric Hospital Yaound Cameroon Pathology Department of the Yaound Gynaeco-Obstetric and Paediatric Hospital Yaound Cameroon

Accessory or ectopic breast tissue is an anomaly in the development of the breast. It is a rare condition that occurs along the embryological mammary line. In less than 1% of all breast cancers, supernumerary breast cancer is reported, with the axillary location being the most common in 60% to 90% of cases. Cancerous degeneration of this supernumerary breast tissue can pose a dual diagnostic and therapeutic problem. We report the case of locally advanced adenocarcinoma in a right supernumerary breast. This is a 75-year-old, grand-multiparous, postmenopausal, and known hypertensive patient on treatment. Family history was remarkable for brain cancer in her sister and oesophageal cancer in her mother. She consulted for a mass in the right axillary cavity on supernumerary breast evolving for a year. Clinical examination revealed a large, fixed, budding and haemorrhagic-ulcerated mass of the right axilla, with long axis measuring about 15 cm. There was as wella supernumerary breast on the left, but without particularity. A soft tissue ultrasound showed a large hypoechoicmass in the right axillary region of 116 mm with areas of central necrobiosis. Morphologically, the breasts were normal. A breast MRI revealed a subcutaneous mass in the right axillary cavity with skin ulceration and satellite lymphadenopathy. The extension assessment revealed liver metastases, and a biopsy of the mass revealed a breast adenocarcinoma. The case was the subject of a multidisciplinary consultation meeting following which a wide excision of the mass was indicated. The histo-pathology analysis results of the surgical specimen were in favour of a triple negative papillary adenocarcinoma. After a post-operative multidisciplinary consultation meeting, adjuvant chemotherapy was indicated. The development of supernumerary breasts depends on hormones, just like normal breasts. Breast cancer in accessory breast tissue is quite rare with the incidence being 6%. The most common pathology is invasive

关键词： Adjuvant Chemotherapy Papillary Adenocarcinoma Surgery Supernumerary Breast Treatment of Supernumerary Breast Cancer

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Assessment of the Vaccination Status of Children Aged 6 to 30 Months in a Tertiary Level Health Care Center in Côte d’Ivoire

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Open Journal of Pediatrics 2024年第3期14卷 536-546页

作者： Yenan John Patrick Kpangni Jean Bertrand Yao Kouassi Christian Yeboua Yao Kossonou Roland Aka-Tanoh Koko Aude Hélène Avi-Siallou christelle Honorine Asse Kouadio Vincent Department of Pediatrics University Teaching Hospital of Bouake Bouake Ivory Coast Unit Pediatric Surgery University Teaching Hospital of Bouake Bouake Ivory Coast

Introduction: Vaccination coverage in Côte d’Ivoire over the period 2011 to 2015 was below the target of 95% for all antigens. The objective of this study was to analyze the vaccination status of children aged 6 to 30 months with a view to improving vaccination coverage. Patients and Methods: This was a descriptive cross-sectional study which took place from June to September 2018 in a tertiary health center, focusing on children aged 6 to 30 months with a correctly completed health record. The parameters studied were sex, age, educational level of mothers, dates of vaccine administration and reason for missed vaccination opportunities. Results: We retained 212 children. The sex ratio was 1.21 and 93% had received the BCG vaccine before the age of 1 month. The average ages of combined and co-administered vaccines for the 1st and 2nd doses were 7.66 ± 3.81 and 12.88 ± 3.95 weeks, respectively. The median was 16.57 weeks for the 3rd dose. The proportion of vaccinated subjects was greater than 90% for the BCG vaccine and the 3 doses of combined vaccines, and 77% for the yellow fever and measles vaccines. The reasons for non-vaccination were attributable to the children’s parents and health facilities. Conclusion: Improving vaccination coverage requires regular supply of vaccines to centers, and the involvement of all health professionals, community and religious leaders in the vaccination awareness process.

关键词： Children Vaccination Coverage Missed Opportunities

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Rib Osteosynthesis for Sub-Acute Management of a Flail Chest in a Tertiary Centre in a Low-Middle Income Country of Sub-Saharan Africa: Case Report at Douala Laquintinie Hospital

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Open Journal of Thoracic Surgery 2024年第1期14卷 1-16页

作者： Fabrice Stéphane Arroye Betou Nyankoue Mebouinz Ferdinand Guy Aristide Bang Kobe Folkabo Zephany Banga Nkomo Douglas Moussa Seck Diop Abdoul Lahad Mbeng Marcella Derboise christelle Biyouma Noel Essomba Souleyman Diatta Handy Eone Daniel Arthur Essomba Hassan Ndiaye Maurice Aurelien Sosso Department of Surgery and Specialties Faculty of Medicine and Biomedical Sciences (FMBS) University of Yaoundé (UYI) Yaoundé Cameroon Department of Surgery and Affiliated Disciplines Douala Laquintinie Hospital Douala Cameroon Department of Surgery and Specialties Yaoundé General Hospital Yaoundé Cameroon Department of Surgery and Specialties Faculty of Medicine and Pharmaceutical Sciences (FMPS) University of Dschang Dschang Cameroon Service de Chirurgie Thoracique et Cardiovasculaire Centre Hospitalier Universitaire de Fann Faculté de Médecine de Pharmacie et d’Odontologie Université de Cheikh Anta Diop Dakar Sénégal UFR des Sciences de la Santé Ziguinchor Sénégal

Background: Costal fracture surgical is still a debate, therefore we shall select between early and delay surgical management. Case Report: We are reporting two cases of post road traffic clash delay ribs fractures osteosynthesis involving a 63-year-old man with multistage fractures on the left and pulmonary pinning of one of the costal arches, complicated by a homolateral haemothorax and a 41-year-old man with a bilateral flail chest. Conclusion: The simple postoperative course and the immediate postoperative improvement in the patient’s clinical respiratory condition enabled us to discuss the time frame for management, in this case the indication for early or later surgery.

关键词： Flail Chest Fixation Plate Rib Fracture Osteosynthesis

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Multiplex Rapid Test with Acceptable Diagnosis Performance as a Solution to Increase Diagnosis of Hepatitis B and C Viruses in Pregnant Women in an Area of High Prevalence of Both Hepatitis Viruses Associated with HIV

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Open Journal of Medical Microbiology 2024年第1期14卷 50-65页

作者： Catherine Boni-Cisse Nina Esther Onstira Ngoyi Hermione Dahlia Mossoro-Kpinde Noella Packo Rabi Senekian Hermann Ndoidet Koutou Coretha Bokia-Baguida christelle Luce Bobossi-Gadia Arthur Simplice Sombot-Ndicky Daniel Yvon Gonessa Freddy Samuel Ngbonga Konzapa Voulou Christian Diamant Mossoro-Kpinde Alassane OUATTARA National Center of Medical Oncology and Radiotherapy Abidjan Ivory Cost Department of Microbiology UFR of Medical Sciences University of Cocody Abidjan Ivory Cost Laboratory of Bacteriology-Virology of Teaching Hospital Center of Brazzaville Brazzaville Republic of Congo Faculty of Health Sciences Marien NGOUABI University Brazzaville Republic of Congo Department of Labor Medicine Service of HIV and STDs Control in the Workplace Bangui Central African Republic (CAR) Faculty of Health Sciences University of Bangui Bangui Central African Republic National Reference Center of Sexually Transmitted Diseases and Antiretroviral Therapy Bangui Central African Republic National Laboratory of Clinical Biology and Public Health Bangui Central African Republic Medicine Department District Hospital of Alindao Alindao Ouaka Prefecture Central African Republic Doctoral School of Sciences and Technology University of Bangui Bangui Central African Republic Coordination of Specialized Study of Clinical Biology University of Bangui Bangui Central African Republic Doctors without Borders Hospital Sica BanguiCRA Laboratory of Medical Analysis of Teaching Hospital Center Mother Elisabeth DOMITIEN of Bimbo Bimbo Central African Republic

Background and Objective: HIV, hepatitis B virus (HBV) and hepatitis C virus (HCV) are very widespread in the world, however, less than 20% of the people affected are diagnosed and treated. This study aimed to determine the prevalence of HIV, HCV and HBV co-infections in pregnant women at Bangui Community University Hospital and the cost of screening. Methods: A cross-sectional study involving consenting pregnant women who came for antenatal care was performed. HIV, HCV antibodies and HBV antigens were detected using Exacto Triplex? HIV/HCV/HBsAg rapid test, cross-validated by ELISA tests. Sociodemographic and professional data, the modes of transmission and prevention of HIV and both hepatitis viruses were collected in a standard sheet and analyzed using the Epi-Info software version 7. Results: Pregnant women aged 15 to 24 were the most affected (45.3%);high school girls (46.0%), and pregnant women living in cohabitation (65.3%) were the most represented. Twenty-five (16.7%) worked in the formal sector, 12.7% were unemployed housewives and the remainder in the informal sector. The prevalence of HIV, HBV, and HCV viruses was 11.8%, 21.9% and 22.2%, respectively. The prevalence of co-infections was 8.6% for HIV-HBV, 10.2% for HIV-HCV, 14.7% for HBV-HCV and 6.5% for HIV-HBV-HCV. All positive results and 10% of negative results by the rapid test were confirmed by ELISA tests. The serology of the three viruses costs 39,000 FCFA (60 Euros) by ELISA compared to 10,000 FCFA (15.00 Euros) with Exacto Triplex? HIV/HCV/AgHBs (BioSynex, Strasbourg, France). Conclusion: The low level of education and awareness of hepatitis are barriers to development and indicate the importance of improving the literacy rate of women in the Central African Republic (CAR). Likewise, the high prevalence of the three viruses shows the need for the urgent establishment of a national program to combat viral hepatitis in the CAR.

关键词： HIV-HCV-HBV Co-Infection Multiplex Immunochromatographic Rapid Test Central Africa Serology Test Cost Diagnostic Accessibility

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Lower Extremity Arterial Disease in Patients with Type 2 Diabetes: Prevalence and Associated Factors at the Libreville University Hospital Center

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World Journal of Cardiovascular Diseases 2024年第5期14卷 295-308页

作者： Allognon Mahutondji Christian Ayo Bivigou Elsa Ntoutoume Mvé Dylan Anthony N’nang Jean-Fidel Kinga Armel Mpori Jamila Myrtille Akagah Kondé christelle Ndoume Obiang Francis Yékini Carole Fadylath Ndjibah Alakoua Cajole Ludvine Babongui Boussougou Latifah Mipinda Jean-Bruno Moubamba Franck Ecke Nzengue Jean-Emmanuel Houenassi Dèdonougbo Martin Boguikouma Jean-Bruno Department of Medicine and Medical Specialties Health Sciences University (USS) Libreville Gabon Cardiology Service Libreville University Hospital Center (CHUL) Libreville Gabon Department of Physiology Health Sciences University Libreville Gabon Amissa Bongo Regional Hospital Franceville Gabon Mother-Child Hospital Center Jeanne Ebori Foundation Libreville Gabon Medicine Service Owendo University Hospital Center Owendo Gabon

Introduction: Lower extremity arterial disease in diabetic patients has distinct characteristics. Objectives: To study the hospital frequency of lower extremity arterial disease and identify associated factors in diabetic patients at the Libreville University Hospital Center (CHUL). Materials and Methods: This was a cross-sectional study conducted from July 1, 2023, to January 31, 2024, in the endocrinology department of the CHUL. All patients with type 2 diabetes over the age of 18 admitted to this department, regardless of the reason for hospitalization, who provided informed consent, were included. Socio-demographic data and cardiovascular risk factors were recorded. Personal and family cardiovascular history and functional symptoms were investigated. The physical examination included measuring blood pressure, heart rate, and the ankle-brachial index in all patients. Results: A total of 219 patients were included, of whom 75 had lower extremity arterial disease, representing a prevalence of 34.24%. It was compensated in 28 cases (37.33%) and decompensated in 39 patients (52%). In eight cases (10.67%), there was critical chronic ischemia. Cardiovascular risk factors associated with diabetes were physical inactivity (89.5%), hypertension (55.25%), overweight (49.77%), obesity (22.84%), and smoking (10.04%). In multivariate analysis, only hypertension (OR = 2.09;95% CI: 1.05 - 4.17;p = 0.035) and LDL cholesterol (OR = 2.75;95% CI: 1.10 - 6.85;p = 0.03) were significantly associated with lower extremity arterial disease in diabetics at the University Hospital of Libreville. Conclusion: Lower extremity arterial disease is common in diabetic patients at the University Hospital of Libreville. It is often asymptomatic, thus requiring systematic screening.[-rId11-]

关键词： Lower Extremity Arterial Disease Diabetes Hypertension Ankle-Brachial Index Gabon

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