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Association between Helicobacter pylori infection,mismatch repair,HER2 and tumor-infiltrating lymphocytes in gastric cancer

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World Journal of Gastrointestinal Oncology 2024年第6期16卷 2487-2503页

作者： Carlos A Castaneda Miluska Castillo Luis A Bernabe Joselyn Sanchez Matteo Fassan Katherine Tello Ignacio Ivan Wistuba Ivan Chavez Passiuri Eloy Ruiz Juvenal Sanchez Fernando Barreda Daniel Valdivia Yaqueline Bazan Milagros Abad-Licham Claudio Mengoa Hugo Fuentes paola montenegro Ebert Poquioma Raul Alatrista Claudio J Flores Luis Taxa Faculty of Health Sciences Universidad Cientifica del SurLima 15038Peru GECO PERU Grupo de Estudios Clinicos Oncologicos del PeruLima 15038Peru Department of Research Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Faculty of Human Medicine Universidad Ricardo PalmaLima 15039Peru Department of Medicine Surgical Pathology&Cytopathology UnitUniversity of PaduaPadua 35121Italy Department of Translational Molecular Pathology The University of Texas MD Anderson Cancer CenterHoustonTX 77030United States Department of Abdominal Surgery Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Department of Pathology Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Department of Medical Specialties Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Department of Pathology Instituto Regional de Enfermedades Neoplasicas del NorteTrujillo 13001Peru Faculty of Human Medicine Universidad Privada Antenor OrregoTrujillo 13008Peru Department of Surgery Instituto Regional de Enfermedades Neoplasicas del SurArequipa 04002Peru Department of Medical Oncology Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Department of Epidemiology Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Unidad de Investigación Básica y Traslacional Oncosalud-AUNALima 15038Peru Faculty of Medicine Universidad San Martin de PorresLima 15008Peru

BACKGROUND The influence of Helicobacter-pylori(H.pylori)infection and the characteristics of gastric cancer(GC)on tumor-infiltrating lymphocyte(TIL)levels has not been extensively studied.Analysis of infiltrating-immune-cell subtypes as well as survival is necessary to obtain comprehensive information.AIM To determine the rates of deficient mismatch-repair(dMMR),HER2-status and H.pylori infection and their association with TIL levels in GC.METHODS Samples from 503 resected GC tumors were included and TIL levels were evaluated following the international-TILs-working-group recommendations with assessment of the intratumoral(IT),stromal(ST)and invasive-border(IB)compartments.The density of CD3,CD8 and CD163 immune cells,and dMMR and HER2-status were determined by immunohistochemistry(IHC).H.pylori infection was evaluated by routine histology and quantitative PCR(qPCR)in a subset of samples.RESULTS dMMR was found in 34.4%,HER2+in 5%and H.pylori-positive in 55.7%of samples.High IT-TIL was associated with grade-3(P=0.038),while ST-TIL with grade-1(P<0.001),intestinal-histology(P<0.001)and no-recurrence(P=0.003).dMMR was associated with high TIL levels in the ST(P=0.019)and IB(P=0.01)compartments,and STCD3(P=0.049)and ST-CD8(P=0.05)densities.HER2-was associated with high IT-CD8(P=0.009).H.pylorinegative was associated with high IT-TIL levels(P=0.009)when assessed by routine-histology,and with high TIL levels in the 3 compartments(P=0.002-0.047)and CD8 density in the IT and ST compartments(P=0.001)when assessed by qPCR.A longer overall survival was associated with low IT-CD163(P=0.003)and CD8/CD3(P=0.001 in IT and P=0.002 in ST)and high IT-CD3(P=0.021),ST-CD3(P=0.003)and CD3/CD163(P=0.002).CONCLUSION TIL levels were related to dMMR and H.pylori-negativity.Low CD8/CD3 and high CD163/CD3 were associated with lower recurrence and longer survival.

关键词： Lymphocytes Macrophages Gastric cancer Helicobacter pylori HER2 Mismatch repair

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Genome-resolved metagenomics of Venice Lagoon surface sediment bacteria reveals high biosynthetic potential and metabolic plasticity as successful strategies in an impacted environment

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Marine Life Science & Technology 2024年第1期6卷 126-142页

作者： Elisa Banchi Erwan Corre paola Del Negro Mauro Celussi Francesca Malfatti National Institute of Oceanography and Applied Geophysics OGS TriesteItaly FR2424 Station Biologique de RoscoffPlateforme ABiMS(Analysis and Bioinformatics for Marine Science)Sorbonne Universite CNRS29680 RoscoffFrance Department of Life Sciences University of TriesteTriesteItaly

Bacteria living in sediments play essential roles in marine ecosystems and deeper insights into the ecology and biogeochemistry of these largely unexplored organisms can be obtained from‘omics’approaches.Here,we characterized metagenome-assembled-genomes(MAGs)from the surface sediment microbes of the Venice Lagoon(northern Adriatic Sea)in distinct sub-basins exposed to various natural and anthropogenic pressures.MAGs were explored for biodiversity,major marine metabolic processes,anthropogenic activity-related functions,adaptations at the microscale,and biosynthetic gene clusters.Starting from 126 MAGs,a non-redundant dataset of 58 was compiled,the majority of which(35)belonged to(Alpha-and Gamma-)Proteobacteria.Within the broad microbial metabolic repertoire(including C,N,and S metabolisms)the potential to live without oxygen emerged as one of the most important features.Mixotrophy was also found as a successful lifestyle.Cluster analysis showed that different MAGs encoded the same metabolic patterns(e.g.,C fixation,sulfate oxidation)thus suggesting metabolic redundancy.Antibiotic and toxic compounds resistance genes were coupled,a condition that could promote the spreading of these genetic traits.MAGs showed a high biosynthetic potential related to antimicrobial and biotechnological classes and to organism defense and interactions as well as adaptive strategies for micronutrient uptake and cellular detoxification.Our results highlighted that bacteria living in an impacted environment,such as the surface sediments of the Venice Lagoon,may benefit from metabolic plasticity as well as from the synthesis of a wide array of secondary metabolites,promoting ecosystem resilience and stability toward environmental pressures.

关键词： Antibiotic resistance PAHs Biosynthetic gene clusters Microscale Mobilome Resistome

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Nrf2 and Her3 co-expression in cholangiocarcinoma:Possible biological pathways for potential therapeutic approach

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Hepatobiliary & Pancreatic Diseases International 2024年第3期23卷 317-321页

作者： paola Parente Valentina Angerilli Giuseppe Zamboni Angelo Sparaneo Fabiola Fiordelisi Leonarda Di Candia Matteo Fassan Paolo Graziano Pathology Unit Fondazione IRCCS Casa Sollievo della Sofferenza71013San Giovanni Rotondo(Foggia)Italy Department of Medicine(DIMED) Surgical Pathology UnitUniversity of Padua35128Padua(Padua)Italy Pathology Unit IRCCS Ospedale Sacro Cuore Don Calabria37024Negrar(Verona)Italy Laboratory of Oncology Fondazione IRCCS Casa Sollievo della Sofferenza71013San Giovanni Rotondo(Foggia)Italy Veneto Institute of Oncology IOV-IRCCS 35124Padua(Padua)Italy

To the Editor:Cholangiocarcinomas(CCAs)are heterogeneous group of malignancies,encompassing intrahepatic CCA(iCCA),and extrahepatic CCA(eCCA);they are also classified into common hepatic duct cholangiocarcinoma(CHDCCA),choledocus extrapancreatic cholangiocarcinoma(EPCCA)and choledocus intrapancreatic cholangiocarcinoma(IPCCA)and,finally,gallbladder carcinoma(GBCCA).CCAs are relatively uncommon but.

关键词： carcinoma gallbladder Nrf2

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May ChatGPT be a tool producing medical information for common inflammatory bowel disease patients’questions?An evidencecontrolled analysis

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World Journal of Gastroenterology 2024年第1期30卷 17-33页

作者： Antonietta Gerarda Gravina Raffaele Pellegrino Marina Cipullo Giovanna Palladino Giuseppe Imperio Andrea Ventura Salvatore Auletta paola Ciamarra Alessandro Federico Division of Hepatogastroenterology Department of Precision MedicineUniversity of Campania Luigi VanvitelliNaples 80138Italy

Artificial intelligence is increasingly entering everyday healthcare.Large language model(LLM)systems such as Chat Generative Pre-trained Transformer(ChatGPT)have become potentially accessible to everyone,including patients with inflammatory bowel diseases(IBD).However,significant ethical issues and pitfalls exist in innovative LLM tools.The hype generated by such systems may lead to unweighted patient trust in these systems.Therefore,it is necessary to understand whether LLMs(trendy ones,such as ChatGPT)can produce plausible medical information(MI)for patients.This review examined ChatGPT’s potential to provide MI regarding questions commonly addressed by patients with IBD to their gastroenterologists.From the review of the outputs provided by ChatGPT,this tool showed some attractive potential while having significant limitations in updating and detailing information and providing inaccurate information in some cases.Further studies and refinement of the ChatGPT,possibly aligning the outputs with the leading medical evidence provided by reliable databases,are needed.

关键词： Crohn’s disease Ulcerative colitis Inflammatory bowel disease Chat Generative Pre-trained Transformer Large language model Artificial intelligence

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Survival after curative pancreaticoduodenectomy for ampullary adenocarcinoma in a South American population:A retrospective cohort study

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World Journal of Gastrointestinal Surgery 2022年第1期14卷 24-35页

作者： Ramiro Manuel Fernandez-Placencia paola montenegro Melvy Guerrero Mariana Serrano Emperatriz Ortega Mercedes Bravo Lourdes Huanca Stéphane Bertani Juan Manuel Trejo Patricia Webb Jenny Malca-Vasquez Luis Taxa Alberto Lachos-Davila Juan Celis-Zapata Carlos Luque-Vasquez Eduardo Payet Eloy Ruiz Francisco Berrospi Hepato-Pancreato-Biliary Section Department of Abdominal SurgeryInstituto Nacional de Enfermedades NeoplasicasLima 15038Peru Department of Medical Oncology Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Department of Pathology Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru International Joint Laboratory of Molecular Anthopological Oncology Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Unite Pharmacochim&Pharmacol Dev UMR152F-31062 ToulouseFrance Department of Radiation Oncology Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru Department of Abdominal Surgery Instituto Nacional de Enfermedades NeoplasicasLima 15038Peru

BACKGROUND Ampullary adenocarcinoma(AAC)is a rare neoplasm that accounts for only 0.2%of all gastrointestinal cancers.Its incidence rate is lower than 6 cases per million people.Different prognostic factors have been described for AAC and are associated with a wide range of survival rates.However,these studies have been exclusively conducted in patients originating from Asian,European,and North American countries.AIM To evaluate the histopathologic predictors of overall survival(OS)in South American patients with AAC treated with curative pancreaticoduodenectomy(PD).METHODS We analyzed retrospective data from 83 AAC patients who underwent curative(R0)PD at the National Cancer Institute of Peru between January 2010 and October 2020 to identify histopathologic predictors of OS.RESULTS Sixty-nine percent of patients had developed intestinal-type AAC(69%),23%had pancreatobiliary-type AAC,and 8%had other subtypes.Forty-one percent of patients were classified as Stage I,according to the AJCC 8 th Edition.Recurrence occurred primarily in the liver(n=8),peritoneum(n=4),and lung(n=4).Statistical analyses indicated that T3 tumour stage[hazard ratio(HR)of 6.4,95%confidence interval(CI)of 2.5-16.3,P<0.001],lymph node metastasis(HR:4.5,95%CI:1.8-11.3,P=0.001),and pancreatobiliary type(HR:2.7,95%CI:1.2-6.2,P=0.025)were independent predictors of OS.CONCLUSION Extended tumour stage(T3),pancreatobiliary type,and positive lymph node metastasis represent independent predictors of a lower OS rate in South American AAC patients who underwent curative PD.

关键词： Gastrointestinal neoplasms Adenocarcinoma Ampulla Pancreaticoduodenectomy Survival South America

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Treatment for paraganglioma with stereotactic radiotherapy

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World Journal of Clinical Cases 2024年第16期12卷 2729-2737页

作者： Antonio Pontoriero paola Critelli Marco Zeppieri Filippo Flavio Angileri Tamara Ius Radiation Oncology Unit Department of BiomedicalDental Science and Morphological and Functional ImagesUniversity of MessinaMessina 98125Italy Department of Ophthalmology University Hospital of UdineUdine 33100Italy Neurosurgery Unit Department of BiomedicalDental Science and Morphological and Functional ImagesUniversity of MessinaMessina 98125Italy Neurosurgery Unit Head-Neck and NeuroScience DepartmentUniversity Hospital of UdineUdine 33100Italy

BACKGROUND Paragangliomas(PG)are rare neoplasms of neuroendocrine origin that tend to be highly vascularized,slow-growing,and usually sporadic.To date,common treatment options are surgical resection(SR),with or without radiation therapy(RT),and a watch-and-wait approach.AIM To evaluate the local control and effectiveness of exclusive fractionated stereotactic RT(FSRT)treatment in unresectable PG(uPG).METHODS We retrospectively evaluated patients with uPG(medically inoperable or refused SR)treated with FSRT with a Cyberknife System(Accuray Incorporated,Sunnyvale,California).Toxicity and initial efficacy were evaluated.RESULTS From May 2009 to January 2023,6 patients with a median age of 68(range 20-84)were treated with FSRT.The median delivered dose was 21 Gy(range 20-30 Gy)at a median isodose line of 75.5%(range 70%-76%)in 4 fractions(range 3-5 fractions).The median volume was 13.6 mL(range 12.4-65.24 mL).The median cumulative biological effective dose and equivalent dose in 2-Gy fractions were 70 Gy and 37.10 Gy respectively.Site of origin involved were the timpa-nojugular glomus(4/6),temporal bone,and cervical spine.In 1 of the 6 patients,the follow-up was insufficient;5 of 6 patients showed a 5-year overall survival and 5-year progression-free survival of 100%.We observed negligible toxicities during and after RT.The majority of patients showed stable symptoms during follow-up.Only 1 patient developed spine metastases.CONCLUSION Our preliminary results on this small cohort of patients suggest that FSRT could be an effective and safe alternative to SR.

关键词： Unresectable paraganglioma Fractionated stereotactic radiation therapy Cyberknife Neurosurgery Metastasis

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Alternative therapeutic strategies in diabetes management

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World Journal of Diabetes 2024年第6期15卷 1142-1161页

作者： Alessia Annicchiarico Barbara Barile Cinzia Buccoliero Grazia paola Nicchia Giacomina Brunetti Department of Biosciences Biotechnologies and EnvironmentUniversity of Bari Aldo MoroBari 70125Italy

Diabetes is a heterogeneous metabolic disease characterized by elevated blood glucose levels resulting from the destruction or malfunction of pancreaticβcells,insulin resistance in peripheral tissues,or both,and results in a non-sufficient production of insulin.To adjust blood glucose levels,diabetic patients need exogenous insulin administration together with medical nutrition therapy and physical activity.With the aim of improving insulin availability in diabetic patients as well as ameliorating diabetes comorbidities,different strategies have been investigated.The first approaches included enhancing endogenousβcell activity or transplanting new islets.The protocol for this kind of intervention has recently been optimized,leading to standardized procedures.It is indicated for diabetic patients with severe hypoglycemia,complicated by impaired hypoglycemia awareness or exacerbated glycemic lability.Transplantation has been associated with improvement in all comorbidities associated with diabetes,quality of life,and survival.However,different trials are ongoing to further improve the beneficial effects of transplantation.Furthermore,to overcome some limitations associated with the availability of islets/pancreas,alternative therapeutic strategies are under evaluation,such as the use of mesenchymal stem cells(MSCs)or induced pluripotent stem cells for transplantation.The cotransplantation of MSCs with islets has been successful,thus providing protection against proinflammatory cytokines and hypoxia through different mechanisms,including exosome release.The use of induced pluripotent stem cells is recent and requires further investigation.The advantages of MSC implantation have also included the improvement of diabetes-related comorbidities,such as wound healing.Despite the number of advantages of the direct injection of MSCs,new strategies involving biomaterials and scaffolds have been developed to improve the efficacy of mesenchymal cell delivery with promising results.In conclusion,this paper offered an overview

关键词： Diabetes Pancreas/islet transplantation Mesenchymal stem cells Induced pluripotent stem cells Exosomes Scaffolds

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Overcast sky condition prevails on and influences the biometeorology of the tropical Andean Páramos

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Journal of Mountain Science 2023年第1期20卷 78-86页

作者： paola montenegro-DÍAZ Rolando CELLERIALVEAR Galo CARRILLO-ROJAS Departamento de Recursos Hídricos y Ciencias Ambientales Universidad de CuencaCuenca010207Ecuador Facultad de Ingeniería Universidad de CuencaCuenca010207Ecuador Facultad de Ciencias Químicas Universidad de CuencaCuenca010207Ecuador

Clouds play a major role in modulating the biometeorological processes. We studied the influence of cloudiness on four biometeorological variables:daily air temperature(Tair), relative humidity(RH),reference evapotranspiration(ETr),and photosynthetic active radiation(PAR), recorded at four sites of Andean Páramos in southern Ecuador during 2.5 to 5.5 years. First, we quantified both the cloud cover percentage(Cloud%) creating cloud masks over the visible bands of Landsat 7 images and the sky condition(K_(T)) using the records of solar and extraterrestrial radiation. Second, we estimated KTfrom Cloud%. Finally, we quantified T_(air), RH, ET_(r), and PAR under clear, cloudy, and overcast K_(T) and their dependence on KT. The average Cloud% ranged between 65%–76%, and KTcorroborated the prevailing overcast sky(between 55% and 72.5% of the days) over the páramos. The proposed model performed well in the sites of calibration(R^(2)= 0.80;MBE = 0.00;RMSE = 0.05) and validation(R^(2)= 0.74;MBE =-0.07;RMSE = 0.11). The overcast sky diminished T_(air)(≤ 10℃), ET_(r)(≤ 1.6 mm day-1), and PAR(4 MJ m^(-2)day^(-1)) and increased RH(≥ 88%),while the variables showed the opposite behavior during the uncommon clear sky(≤ 5.5% of the days).Thus, mostly the dynamic of RH(R^(2)≥ 0.62), ETr(R^(2)≥ 0.85), and PAR(R2≥ 0.77) depended on K_(T). Hence,the prevailing overcast sky influenced the biometeorology of the páramos.

关键词： Cloudiness indicator Clearness index Satellite imagery Tropical Andes

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Epidemiological Profile of Men Who Have Sex with Men: First Data about Male Sex Workers in Central African Republic (CAR)

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Advances in Sexual Medicine 2024年第1期14卷 1-11页

作者： Hermione Dahlia Mossoro-Kpinde Balekouzou Augustin paola Julienne Demba Henri Saint Calvaire Diemer Direction de la Médecine du Travail Ministère du Travail de l’Emploi de la Protection Sociale et de la Formation Professionnelle Ban-gui République Centrafricaine Comité National de Lutte contre le Sida Bangui République Centrafricaine Faculté des Sciences de la Santé Université de Bangui Bangui République Centrafricaine Département de Santé Publique Faculté des Sciences de la Santé Université de Bangui Bangui République Centrafricaine

Objectives: Sex work is not well documented among African men. The aim of this study was to describe the epidemiological profile of men who have sex with men (MSM) and eventually to determine the proportion of sex workers (SW) among them, as well as the proportion of MSM who have been victims of gender-based violence (GBV). Material and Methods: A cross-sectional study coordinated by the Direction de la Médecine du Travail was carried out at the headquarters of the association ALTERNATIVES in Bangui Bangui from July 1 to October 31, 2021. Consenting MSM present during the study period were systematically included. Sociodemographic variables, those relating to the future vision of the activity and to GBV were collected and analyzed using Epi-Info version 7 software. Results: Forty MSM with an average age of 23 years and mainly secondary education (75.0%) were included. The vast majority of MSM were unemployed (85.0%). 45.0% had been victims of GBV and wanted to stop working as an MSM (47.5%), and almost 2/3 (65.0%) would accept another income-generating activity in exchange for the MSM. Violence was sexual (32.5%), economic (22.5%), physical (20.0%), verbal (12.5%) and psychological (12.5%). Conclusion: The MSM were mainly young, poorly educated, unemployed, and almost half were victims of GBV. The desire to change MSM activity to another income-generating activity alongside that of MSM shows that many of them are SW, workers in the informal sector. This must be taken into account in prevention activities, even if the data needs to be confirmed on a much larger sample.

关键词： Men Who Have Sex with Men Sex Workers Gender-Based Violence Informal Sector Central Africa

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HVOF-sprayed HAp/S53P4 BG composite coatings on an AZ31 alloy for potential applications in temporary implants

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Journal of Magnesium and Alloys 2024年第1期12卷 345-360页

作者： Carlos A.Poblano-Salas John Henao Astrid L.Giraldo-Betancur paola Forero-Sossa Diego German Espinosa-Arbelaez Jorge A.González-Sánchez Luis R.Dzib-Pérez Susana T.Estrada-Moo Idelfonso E.Pech-Pech CIATEQ A.C. Av.Manantiales 23-AParque Industrial Bernardo QuintanaEl MarquésQuerétaro 76246Mexico CONAHCYT-CIATEQ A.C. Av.Manantiales 23-AParque Industrial Bernardo QuintanaEl MarquésQuerétaro 76246Mexico CONAHCYT-Cinvestav Libramiento Norponiente#2000.Fraccionamiento Real de JuriquillaQuerétaro 76230Mexico Universidad Tecnológica de Querétaro Av.Pie de la Cuesta N°2501Querétaro 76148Mexico CIDESI Av.Playa Pie de la Cuesta No 702Col.San PabloQuerétaro 76125Mexico Center for Corrosion Research Autonomous University of CampecheAv.Héroe de Nacozari No.480P.C.24070San Francisco de CampecheCam.Mexico

Bioactive thermal spray coatings produced via high-velocity oxygen fuel spray(HVOF)from hydroxyapatite(HAp)and bioactive glasses(BG)have the potential to be employed on temporary implants due to the ability of both HAp and BG to dissolve and promote osseointegration,considering that both phases have different reaction and dissolution rates under in-vitro conditions.In the present work,75%wt.HAp-25%wt.S53P4 bioactive glass powders were HVOF-sprayed to obtain HAp/S53P4 BG composite coatings on a bioresorbable AZ31 alloy.The study is focused on exploring the effect of the stand-off distance and fuel/oxygen ratio variation as HVOF parameters to obtain stable structural coatings and to establish their effect on the phases and microstructure produced in those coatings.Different characterization techniques,such as scanning electron microscopy,X-ray diffraction,and Fourier transform infrared spectroscopy,were employed to characterize relevant structural and microstructural properties of the composite coatings.The results showed that thermal gradients during coating deposition must be managed to avoid delamination due to the high temperature achieved(max 550℃)and the differences in coefficients of thermal expansion.It was also found that both spraying distance and oxygen/fuel ratio allowed to keep the hydroxyapatite as the main phase in the coatings.In addition,in-vitro electrochemical studies were performed on the obtained HAp/S53P4 BG composite coatings and compared against the uncoated AZ31 alloy.The results showed a significant decrease in hydrogen evolution(at least 98%)when the bioactive coating was applied on the Mg alloy during evaluation in simulated body fluid(SBF).

关键词： Coatings Composites Thermal spray Temporary implants Hydrogen evolution

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