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三维骨建模系统在人工全膝关节置换中的优化作用:导航与常规手术早期疗效比较(英文)

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中国组织工程研究与临床康复 2008年第13期12卷 2564-2568页

作者：吴昊 stéphane Van Driessche Daniel Goutallier 广西壮族自治区人民医院骨科广西壮族自治区南宁市530021 法国亨利蒙多医院矫形与创伤外科法国94010

背景:人工全膝关节置换手术的重点是准确的假体三维定位,重建良好的下肢力线,维持膝关节韧带的平衡,避免髌股关节并发症,从而取得一个无痛稳定、功能良好和持久耐用的关节。目的:通过对比导航和常规全膝关节置换的近期效果,讨论三维骨... 详细信息

背景:人工全膝关节置换手术的重点是准确的假体三维定位,重建良好的下肢力线,维持膝关节韧带的平衡,避免髌股关节并发症,从而取得一个无痛稳定、功能良好和持久耐用的关节。目的:通过对比导航和常规全膝关节置换的近期效果,讨论三维骨建模系统对人工全膝关节置换手术中精确重建下肢力线、旋转对位和韧带平衡的优化作用。设计:分组对比观察单位:法国亨利蒙多医院矫形与创伤外科。对象:选2002-11/2003-06 在法国亨利蒙多医院矫形与创伤外科进行的计算机辅助人工膝关节置换21例为导航手术组,年龄64～79 岁,14 例膝内翻,7例膝外翻;常规手术人工膝关节置换20例传统手术组,年龄 65～83 岁,15例膝内翻,5例膝外翻;纳入标准均为的骨性关节炎患者,排除复治的人工全膝关节翻修术患者,患者均知情同意。方法:均采用后稳定型人工表面全膝关节(Hermes?法国 Ceraver),两组的手术基本操作相同,导航手术组在 Ceravision ?无需影像资料的三维骨建模(Bone-Morphing)计算机辅助系统监控下进行。主要观察指标:对比术前、术中和术后的相关影像资料,分析下肢力线重建和韧带平衡的结果;检查术后 3 个月手术膝关节的活动度、额面松弛度和髌骨稳定性。结果:41例患者均进入结果分析。①所有患者都获得人工膝关节胫、股骨假体的满意对位植入和韧带平衡。②Ceravision系统对下肢力线的测量及在膝内外翻应力下的测量均比X射线片更精确;两组病例的下肢力线都在内外翻3°的范围内(P> 0.05)。③两组术后3个月的关节活动度比较差异不显著(P=0.06);导航手术组膝关节额面松弛度优于常规手术组(P=0.03)。④两组均无髌骨失稳和脱位等并发症。结论:应用以三维骨建模为基础的计算机辅助手术系统,优化了人工全膝关节置换,精确实现了截骨和三维对位,获得良好的膝关节屈伸位下关节等距间隙,保证良好的膝关节韧带张力与平衡稳定,取得比常规手术更合理的额面松弛度,术后的韧带平衡稳定更好,早期疗效满意。

关键词：膝关节置换韧带平衡计算机辅助系统三维骨建模医学植入体生物力学

Delayed and short course of rapamycin prevents organ rejection after allogeneic liver transplantation in rats

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World Journal of Gastroenterology 2017年第38期23卷 6962-6972页

作者： Salim Hamdani Allan Thiolat Sina Naserian Cynthia Grondin stéphane Moutereau Anne Hulin Julien Calderaro Philippe Grimbert JoséLaurent Cohen Daniel Azoulay Caroline Pilon Université Paris-Est AP-HP Laboratoire de Biochimie Groupe Hospitalier Henri-Mondor Albert-Chenevier AP-HP Laboratoire de Pharmacologie-Toxicologie Biologiques Groupe Hospitalier Henri-Mondor Albert-Chenevier AP-HP Anatomie et Cytologie Pathologique Groupe Hospitalier Henri-Mondor Albert-Chenevier APHP Service de Chirurgie HPB et Trans-plantation Hépatique Groupe Hospitalier Henri-Mondor Albert-Chenevier Department of Hepato-Pancreato-Biliary Surgery and Liver Transplantation Henri Mondor Hospital

AIMTo test whether a delayed and short course of rapamycin would induce immunosuppressive effects following allogeneic orthotopic liver transplantation (OLT) in *** OLTs were performed using Dark Agouti livers transplanted into Lewis recipients, and syngeneic OLTs were performed using the Lewis rat strain. Rapamycin (1 mg/kg per day) was administered by gavage from day 4 to day 11 post-transplantation. Lymphocyte cellular compartments were analyzed by flow cytometry in draining lymph nodes, non-draining lymph nodes and the spleen at days 11 and 42 in rapamycin-treated rats, untreated control rats and syngeneic grafted rats. Skin grafts from Dark agouti or from F344 RT were performed at day 30 on liver grafted rats treated with *** 8-d course of rapamycin treatment initiated 4 d following transplantation resulted in the survival of grafted rats for more than 100 d. In contrast, untreated rats died of liver failure within 13 to 21 d. The analysis of the cellular compartment revealed an increase in two cellular subpopulations, specifically myeloid-derived suppressor cells (MDSCs) and CD8+CD45RClow T cells, without major modifications in the regulatory T cell (Treg) compartment in treated rats in the early stages after grafting. We evaluated the ability of treated rats to reject third-party allogeneic skin grafts to confirm their immune competence. In contrast, when skin was collected from rats syngeneic to the grafted liver, it was not *** results demonstrate that short and delayed rapamycin treatment allows for tolerance in allogeneic OLT. The results also allowed for the identification of the mechanisms of tolerance induced by rapamycin by identifying MDSCs and CD8+CD45RClow T cells as associated with the state of tolerance.

关键词： Myeloid-derived suppressor cells Liver transplantation Rapamycin Regulatory T cells

Antibiotic Resistance Profile of Serotypes of streptococcus pneumoniae strains in Bangui, from 2017 to 2022: Case of Serotype 1

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Open Journal of Medical Microbiology 2024年第2期14卷 131-145页

作者： Zéphirin Dalengat Vogbia Ernest Lango Yaya Marceline Djeintote stéphanie Judith N’Yetobouko Jean de Dieu Longo Clotaire Donatien Rafaï Christian Diamant Mossoro-Kpindet Gérard Gresenguet Epidemiology and Research Service National Reference Center for Sexually Transmitted Infections and Anti-Retroviral Therapy Ministry of Health Bangui Central African Republic Faculty of Health Sciences Doctoral School of Human and Veterinary Health Sciences University of Bangui Bangui Central African Republic National Laboratory of Clinical Biology and Public Health Bangui Central African Republic National Blood Transfusion Center Bangui Central African Republic Public Department Ministry of Health Bangui Central African Republic

Goals: The aim of this study was to determine the antibiotic resistance profile of serotypes of streptococcus pneumoniae strains circulating in Bangui. Methodology: A prospective and analytical analysis was carried out at the National Laboratory of Clinical Biology and Public Health from 2017 to 2022. The strains came from our study on the contribution to the study of antibiotic sensitivity of streptococcus pneumoniae strains. The multiplex PCR test was used for its cost-effectiveness in terms of amplifiers which can be purified in order to be sequenced. It also makes it possible to detect several germs as well as their serotypes. For a PCR reaction, several elements are involved in the reaction medium or Master Mix. These are the desoxyribonucleotides (dNTPs), the magnesium ions (MgCl2) and the primers. A set of 14 primers divided into 3 classes were used. Class 1 primers served as an internal control by targeting the cpsA gene. It is a highly conserved gene found in capsular loci characterized to date. The primers of the second class were used to target specific serotypes by specific reactions (out of six possibilities). The group reaction was carried out using the primers of the third class in order to carry out an initial screening of the samples and to classify the pneumococcal isolates. Related serotypes were grouped based on the amplification of common genes. Using the technique of electrophoresis on agarose gel and an ultraviolet radiation device, the migration bands are then visualized and analyzed. The data collected had been entered into Excel 2010 and analyzed with Epi info 7. The exact Fischer chi2 test at the 5% threshold, the relative risk and its 95% confidence interval were used to compare the proportions and determine the associations. Results: 187 antibiotic-resistant strains of streptococcus pneumoniae were collected. The average frequency of serotypes 1, 9A, 4 and untypeable identified were 43.59%, 18.18%, 18.27% and 39.57% respectively. The fre

关键词： streptococcus pneumonia Serotype Antibiotic Resistance Bangui

Pesticide Exposure Levels and Risk Assessment in Operators Involved in the Cashew Production in Côte d’Ivoire

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Agricultural Sciences 2022年第1期13卷 86-104页

作者： Yao stéphane Koffi James Halbin Kouadio Diakalia Son Research Group of Crop Production Quality Management Laboratory of Agrovalorisation UFR Agroforesterie Jean Lorougnon Guédé University Daloa C&#244 te d’Ivoire Agrosystèmes et Ingénierie de l’Environnement (Sy.N.A.I.E) Unité Santé des Plantes du Laboratoire Systèmes Naturels Institut du Développement Rural (IDR) Université Nazi Boni (UNB) Bobo-Dioulasso Burkina Faso

To assess the level of producers’ exposure and the health risk in relation to phytosanitary practices in cashew crops in C?te d’Ivoire, a descriptive longitudinal toxicological study was conducted in 2018-2019 with 76 cashew producers in the areas of Mankono, Dabakala and Bondoukou. The data collected permitted the assessment of phytosanitary risks on the health of producers according to the Quebec-IRPeQ pesticide risk indicators. Field observations translated into scenarios were used to determine the exposure levels of producers via the UK-POEM predictive model. The main active substances used were glyphosate, 2,4-D, cypermethrin, acetamiprid, lambdacyhalothrin, profenofos, imidacloprid, deltamethrin, mancozeb and metalaxyl. The risk indicators showed that 2,4-D (TRI = 1332.25;SRI = 432.98), profenofos (TRI = 2550.25;SRI = 637.56) and mancozeb (TRI = 841;SRI = 147.18) among herbicides, insecticides and fungicides respectively could have more adverse health effects after exposure. These findings translated into scenarios specifically showed high exposure of producers to herbicides, with exposure levels ranging from 1.31 mg/kg bw/day to 1.67 mg/kg bw/day, well above the acceptable operator’s exposure levels (AOEL). These health risks could be significantly reduced if the required personal protective equipment is worn. But, recommended doses of pesticides should be reconsidered, because in some cases, applicators exposure remained high despite the protective equipment.

关键词： Cashew Pesticides Health Risks UK-POEM Côte d’Ivoire

Experimental Investigation of the Cooling Capacity of Gaseous Carbon Dioxide in Free Jet Expansion for Use in Portable Air-Cooling Systems

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Open Journal of Applied Sciences 2018年第2期8卷 62-72页

作者： Chady Al Sayed Ludwig Vinches stéphane Hallé Department of Mechanical Engineering école de Technologie Supérieure Montreal Canada

This paper investigates the possibility of using the free expansion of gaseous CO2 in portable air-cooling systems. The cooling capacity of the gaseous CO2 free jet expansion was calculated using three different approaches and the results showed that the simplified calculations would give approximated cooling values with an 11.6% maximum error. The mass flow rate, upstream pressure and cooling capacity of the gaseous CO2 decreased with time. A maximum 48.5 watts of cooling was recorded at minute 4 and a minimum value of 10.4 watts at the end of the test. The drop in cooling capacity is due to the evaporation of the liquid CO2 inside the small cylinder which cools the two-phase CO2 mixture and causes a pressure drop (from 6 MPa to 2.97 MPa), which also affects the mass flow rate of gaseous CO2 exiting the orifice (from 0.56 g/s to 0.24 g/s). If this cooling technique is to be considered in portable compact-cooling systems, the mass, pressure and cooling capacity drop with time must be solved. One of the solutions could be to cover the cylinder with a heating coat to compensate for the heat absorbed by the evaporation of the liquid CO2.

关键词： Gaseous CO2 Free Jet Expansion Cooling Capacity Compact Air-Cooling Technique

Effect of pediatric Tuina on children's recurrent acute respiratory tract infections: a retrospective cohort study in Southern China

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Journal of Traditional Chinese Medicine 2024年第3期44卷 586-594页

作者： YIN Lingjia stALSBY LUNDBORG Cecilia WU Darong YANG Jinghua ALVESSON Helle Molsted CAI Jianxiong LU Taoying XIE Qianwen MARRONE Gaetano Department of Global Public Health Karolinska InstitutetStockholm 17177Swede state Key Laboratory of Dampness Syndrome of Chinese Medicine the Second Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou 510120China Outcome Assessment Research Team in Chinese Medicine the Second Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou 510120China Health Construction Administration Centre Guangdong Provincial Hospital of Chinese MedicineGuangzhou 510120China Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome the Second Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou 510120China Department of Pediatrics the Second Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou510120China

OBJECTIVE: To determine the effectiveness of pediatric Tuina(PT) in preventing recurrent acute respiratory tract infections(ARTIs) in children. METHODS: This is a retrospective cohort study based on the electronic medical records of children with recurrent ARTIs in 2016. Children were divided into a PT group or a non-PT group, according to whether they had received PT or not in 2016. The primary outcome was the number of ARTI episodes in 2017 and 2018. The secondary outcomes were the number of ARTIs leading to outpatient department visits and outpatient antibiotic prescriptions due to ARTIs in the same time period. Negative binomial regressions were used to detect the association between PT and the outcomes. RESULTS: A total of 2303 children were included in the analysis, including 94 in the PT group and 2209 in the non-PT group. Children who received PT six or more times in 2016 had fewer episodes of ARTIs in 2017 [incidence rate ratio(IRR): 0.59, 95% confidence interval(CI)(0.42-0.84)] and 2018 [IRR: 0.58, 95% CI(0.36-0.94)] and fewer outpatient department visits due to ARTIs in 2017 [IRR: 0.56, 95% CI(0.38-0.83)] than children who had not received PT in 2016. There was no significant difference in the number of outpatient antibiotic prescriptions between the two groups. CONCLUSIONS: Receiving PT six or more times within one year is associated with a decrease in recurrent ARTIs in children in the following two years. Randomized controlled trials are needed for effect evaluation prior to establishing PT as a method for preventing recurrent ARTIs among children.

关键词： child massage pediatric Tuina respiratory tract infections

Reducing the Levels of Sodium, Saturated Animal Fat, and Nitrite in Dry-Cured Pork Meat Products: A Major Challenge

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Food and Nutrition Sciences 2017年第4期8卷 419-443页

作者： Hassan Safa stéphane Portanguen Pierre-Sylvain Mirade QuaPA INRA St-Genès-Champanelle France

The curing of meat is a conservation technique widely used since ancient times to prolong shelf-life. It consists in exposing meat to a mixture of sodium chloride and nitrate/nitrite. Sodium chloride affects the flavor, texture and shelf-life of meat products. Animal fat mainly affects the flavor and texture, and nitrate and nitrite affect the color and flavor, and give cured meat products their typical aroma. Excessive intake of sodium has been linked to arterial hypertension and increased risk of cardiovascular diseases. Excessive intakes of saturated fatty acids in pork fat, and also of nitrite, have been identified as factors promoting some cancers. There is consequently an increasing consumer demand to reduce these ingredients in processed meat and so develop healthier cured meat products. This paper reviews how and to what extent sodium, animal fat rich in saturated fatty acids, and nitrite contents can be reduced in the production of dry-cured hams and dry-fermented sausages.

关键词： Sodium Saturated Fatty Acids Nitrite Dry-Fermented Sausage Dry-Cured Ham

Validation of a Wearable Biometric System’s Ability to Monitor Heart Rate in Two Different Climate Conditions under Variable Physical Activities

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E-Health Telecommunication Systems and Networks 2017年第2期6卷 19-30页

作者： Chady Al Sayed Ludwig Vinches stéphane Hallé Department of Mechanical Engineering école de Technologie Supérieure Montreal Canada

Research has proven the importance of cooling garments in reducing heat stress, especially for workers in extreme environments. The currently available cooling capacity of these garments should be controlled for improving their efficiency and autonomy. In this study, we investigated the Hexoskin wearable biometric shirt’s capacity to monitor heart rate. Twelve male volunteers wore a Hexoskin biometric shirt and Polar®H7 heart rate sensor and they completed two identical tests under two different climate conditions (25°C ± 0.5°C;39% ± 1% relative humidity and 31°C ± 0.5°C;60% ± 1% relative humidity). The results from four different statistical methods show a high correlation and an absence of significant differences between the Polar? and Hexoskin systems in monitoring the subjects’ heart rates. The Hexoskin wearable biometric shirt can be used to monitor the heart rate of humans in moderate or hot and humid climates under variable physical activities, regardless of their age, weight or height.

关键词： Hexoskin Biometric System Heart Rate Hot and Humid Environments Physical Activity

Characterization of Extracts from the Bark of the Gabon Hazel Tree (Coula edulis baill) for Antioxidant,Antifungal and Anti-termite Products

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Journal of Renewable Materials 2021年第1期9卷 17-33页

作者： Christ stone Arnaud Bopenga Bopenga Henri Meyo Degboevi Kevin Candelier Prosper Edou Engonga stéphane Dumarçay Marie France Thévenon Christine Gérardin Charbonnier Philippe Gérardin Universitéde Lorraine Institut National de Recherche pour l’Agriculturel’Alimentation et l’EnvironnementLaboratoire d’Etudes et de Recherche sur le Matériau BoisNancyFrance Universitéde Montpellier Centre de Coopération Internationale en Recherche Agronomique pour le Développement-Research Unit BiomassWoodEnergyBioproductsMontpellierFrance Multidisciplinary Laboratory of Sciences of Libreville Normal Superior SchoolLibrevilleGabon

Chemical composition of the bark extracts of Coula edulis was investigated to find potential antioxidant,anti-termite and antifungal compounds which can find useful applications in the fields of food,nutraceuticals,cosmetics or *** screening revealed the presence of several groups of active molecules such as alkaloids,polyphenols,flavonoids,saponins and sterols and/or terpenes in the different *** phenols,condensed tannins and flavonoids contents corroborated phytochemical *** chromatographymass spectrometry(GC-MS)analysis revealed compounds in dichloromethane extract different from those obtained with all the other *** and trans-9-octadecenoic acids,as well as stigmasterol andβ-sitosterol have been identified as the major compounds in the dichloromethane *** obtained with acetone and toluene/ethanol mixture(2/1,v/v)indicated the presence of few amounts of fatty acids and sugars,catechin in small amount and huge amounts of phenolic acids like gallic and ellagic *** radical 2,2-diphenyl-1-picrylhydrazyle(DPPH)and the cationic radical 2,2’-azinobis(3-ethylbenzothiazoline-6-sulfonic acid)(ABTS+)were used for evaluation of antioxidant properties of the different *** dichloromethane extracts had a very low antioxidant activity,while acetone and toluene/ethanol extracts presented EC50 values similar to those of catechin and BHT used as reference antioxidant *** of the different extracts of the bark of *** on fungal growth inhibition indicated better inhibition of the mycelium growth of brown rot fungi compared to white rot *** anti-termite activities were recorded with the aqueous extracts,while stronger activities were recorded with dichloromethane,acetone and toluene/ethanol extracts.

关键词： Antifungal antioxidant anti-termite Coula edulis baill extracts valorisation