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Solid-state NMR of vulcanized natural rubber/butadiene rubber blends:Local organization and cross-linking heterogeneities This article is part of the virtual special issue“Solid-state NMR studies on polymers and biological solids”

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Magnetic Resonance Letters 2024年第4期4卷 49-61页

作者： Pierre Daniel cristina coelho-diogo Valérie Gaucher Grégory Stoclet clément Robin cédric Lorthioir Sorbonne Université CNRSLaboratoire de Chimie de la Matière Condensée de ParisLCMCPUMR 757475005 ParisFrance Sorbonne Université CNRSFédération Chimie et Matériaux de Paris-CentreFR 248275005 ParisFrance Univ.Lille CNRSINRAECentrale LilleUnitéMatériaux et TransformationsUMETUMR 820759000 LilleFrance Hutchinson Research and Innovation center 45120 Châlette-sur-LoingFrance

Elastomer blends,among which natural rubber(NR)and butadiene rubber(BR),are involved in many components of the automotive/tire industry.A comprehensive understanding of their mechanical behavior requires,among other features,a detailed description of the crosslink density in these *** the case of vulcanized immiscible blends,the distribution of the cross-link density within each of the NR-and BR-rich domains is key information,but difficult to determine using the conventional approaches used for one-component crosslinked *** this study,the vulcanization within NR/BR blends is investigated using a robust^(1)H double-quantum(DQ)MAS recoupling experiment,*** kinds of cross-linked NR/BR blends were considered with two different microstructures for the BR *** bulk organization of the resulting blends was first probed by analyzing the^(1)H spin-lattice relaxation *** a second step,BaBa-xy16 was used to investigate,in a selective way,the cross-link heterogeneities within NR/BR *** particular,for immiscible NR/BR mixtures,the distribution of the cross-link density between both phases was compared and the observed differences were discussed.

关键词： Rubbers Blends cross-linking 1H solid-state NMR Relaxation Double-quantum NMR Dipolar recoupling

Acute bleeding after argon plasma coagulation for weight regain after gastric bypass: A case report

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World Journal of clinical cases 2019年第15期7卷 2038-2043页

作者： diogo Turiani Hourneaux de Moura Amit H Sachdev Po-Wen Lu Igor Braga Ribeiro christopher c Thompson Division of Gastroenterology Hepatology and EndoscopyBrigham and Women’s HospitalHarvard Medical SchoolBostonMA 02115United States Department of Gastroenterology Clinics Hospital of Sao Paulo UniversitySao Paulo 05403-00Brazil Department of Gastroenterology and Hepatology Linkou Chang Gung Memorial HospitalTaoyuan City33305Taiwan

BAcKGROUND Roux-en-Y gastric bypass(RYGB) is the most commonly performed surgical procedure used to treat obesity worldwide. Despite satisfactory results in terms of weight loss, over time many patients experience weight regain. There are many factors that contribute to weight regain after RYGB, including the diameter of the gastric-jejunal anastomosis(GJA). One of the most commonly performed endoscopic procedures for weight regain after RYGB is argon plasma coagulation(APc). We report a case of hematemesis after outlet revision with APc. We highlight several treatment modalities that can be used to treat this *** SUMMARY A 45-year-old female with a history of weight regain after RYGB was referred for possible endoscopic treatment for weight regain. On endoscopic evaluation, the diameter of the GJA was 22 mm. Due to the dilated GJA, treatment with APc was performed. Several months later she reported a return of poor satiety and an increased appetite. A repeat endoscopy was then performed. The GJA was approximately 15 mm and was incompetent. APc was performed. One day post procedure she had four episodes of hematemesis. An endoscopy was performed and a large ulcer with a visible arterial vessel was visualized at the *** was attempted using a coagrasper and after initial contact with the vessel, the vessel started oozing. Due to fibrosis and the depth of ulceration in the area, clips and repeat APc could not be used. Therefore, an attempt to inject epinephrine injection was made. However, persistent oozing was noted. As a result, hemostatic powder was applied to the region of the bleeding ***, no more bleeding was observed. On follow-up, the patient remained hemodynamically stable and a second look endoscopy was not performed. The patient was discharged three days *** APc revision of the GJA is known to be a relatively safe and effective strategy to manage weight regain post RYGB. Anastomotic site bleeding is an i

关键词： Anastomosis Roux-en-Y Argon plasma coagulation Bariatric Gastric bypass Gastrointestinal hemorrhage case report

The corpus cavernosum after treatment with dutasteride or finasteride： a histomorphometric study in a benign prostatic hyperplasia rodent model

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Asian Journal of Andrology 2018年第5期20卷 505-510页

作者： Marcello H A Da Silva Waldemar S costa Francisco J B Sampaio diogo B De Souza Urogenital Research Unit Rio de Janeiro State University Rio de Janeiro RJ 20551-030 Brazil

Erectile dysfunction is a common side effect of finasteride and dutasteride treatments. The objective of this study was to investigate the structural changes in the penis using a benign prostatic hyperplasia （BPH） rodent model treated with dutasteride or finasteride. Sixty male rats were divided into the following groups： c, untreated control rats; c ＋ D, control rats receiving dutasteride; c ＋ F, control rats receiving finasteride; H, untreated spontaneously hypertensive rats （SHRs）; H ＋ D, SHRs treated with dutasteride; and H ＋ F, SHRs treated with finasteride. Treatments were performed for 40 days, and penises were collected immediately thereafter. The organs were analyzed using histomorphometric methods to determine the cross-sectional penile area, as well as the surface density （Sv） of smooth muscle fibers, connective tissue, elastic system fibers, and sinusoidal spaces of the corpus cavernosum. The results were compared using a one-way ANOVA with Bonferroni＇s posttest. Groups c ＋ D and c ＋ F had a significantly smaller penile cross-sectional area, but more elastic system fiber Sv compared to Group c. Group c ＋ D showed less smooth muscle Sv, and Group H showed more connective tissue but a smaller sinusoidal space Sv in the corpus cavernosum compared to Group c. Groups H ＋ D and H ＋ F had less smooth muscle Sv than Group H. Group H ＋ D also had more connective tissue and elastic system fiber Sv than Group H. Both dutasteride and finasteride promoted penile modifications in the control rat penis, although this affect was ~reater in Group H animals. In this rodent model, dutasteride was the drug that most affected the corpus cavernosum.

关键词： animal models benign prostatic hyperplasia dutasteride erectile dysfunction finasteride penis

Structural phase relations in perovskite-structured BiFeO_(3)-based multiferroic compounds

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Journal of Advanced ceramics 2013年第2期2卷 103-111页

作者： Valdirlei Fernandes FREITAS Gustavo Sanguino DIAS Otávio Algusto PROTZEK diogo Zampieri MONTANHER Igor Barbosa cATELLANI Daniel Matos SILVA Luiz Fernando cÓTIcA Ivair Aparecido dos SANTOS UEM-Universidade Estadual de Maringá GDDM-Grupo de Desenvolvimento de Dispositivos MultifuncionaisDepartamento de FísicaMaringáBrazil

In this review,the state of the art in understanding the structural phase relations in perovskite-structured BiFeO_(3)-based polycrystalline solid solutions is presented and *** about the close relation between the structural phase and overall physical properties of the reviewed systems are pointed out and *** is shown that,by adjusting the structural symmetric arrangement,the ferroelectric and magnetic properties of BiFeO_(3)-based polycrystalline solid solutions can be tuned to find specific multifunctional ***,an intrinsic mechanism linking structural arrangement and physical properties cannot be identified,revealing that this subject still deserves further discussion and investigation.

关键词： bismuth ferrite ferroelectrics multiferroics

Oncologic aspects of the decision-making process for surgical approach for colorectal liver metastases progressing during chemotherapy

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World Journal of Gastrointestinal Surgery 2022年第9期14卷 877-886页

作者： Raphael L c Araujo camila G c Y carvalho carlos T Maeda Jean Michel Milani diogo G Bugano Pedro Henrique Z de Moraes Marcelo M Linhares Department of Surgery Universidade Federal de São PauloSão Paulo 04024-002Brazil Department of Oncology Hospital Israelita Albert EinsteinSão Paulo 05652-900Brazil Department of Surgical Oncology Hospital e Maternidade Brasil Rede D'Or São LuizSanto André09030-590São PauloBrazil

colorectal cancer represents the third most diagnosed malignancy in the *** liver is the main site of metastatic disease,affected in 30%of patients with newly diagnosed *** resection is considered the only potentially curative treatment for colorectal liver metastasis(cRLM),with a 5-year survival rate ranging from 35%to 58%.However,up to 80%of patients have initially unresectable disease,due to extrahepatic disease or bilobar multiple liver *** availability of increasingly effective systemic chemotherapy has contributed to converting patients with initially unresectable liver metastases to resectable disease,improving long-term outcomes,and accessing tumor *** recent years,response to preoperative systemic chemotherapy before liver resection has been established as a major prognostic *** studies have demonstrated that patients with regression of hepatic metastases while on chemotherapy have improved outcomes when compared to patients with stabilization or progression of the *** if disease progression during chemotherapy represents an independent negative prognostic factor,some patients may still benefit from surgery,given the role of this modality as the main treatment with curative intent for patients with *** selected cases,based on size,the number of lesions,and tumor markers,surgery may be offered despite the less favorable prognosis and as an option for non-chemo responders.

关键词： colorectal liver metastases Oncology Disease progression Surgery Liver resection Hepatectomy

Endoscopic ultrasound fine needle aspiration vs fine needle biopsy in solid lesions:A multi-center analysis

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World Journal of clinical cases 2021年第34期9卷 10507-10517页

作者： diogo Turiani Hourneaux Moura Thomas R Mccarty Pichamol Jirapinyo Igor Braga Ribeiro Galileu Ferreira Ayala Farias Antonio coutinho Madruga-Neto Marvin Ryou christopher c Thompson Gastrointestinal Endoscopy Unit University of Sao Paulo School of MedicineSão PauloSP 05403-010Brazil Division of Gastroenterology Hepatology and EndoscopyBrigham and Women’s HospitalHarvard Medical SchoolBostonMA 02115United States Division of Gastrointestinal Endoscopy University of São Paulo Medical SchoolSão PauloSP 01246-903Brazil

BAcKGROUND While endoscopic ultrasound(EUS)-guided fine needle aspiration(FNA)is considered a preferred technique for tissue sampling for solid lesions,fine needle biopsy(FNB)has recently been *** To compare the accuracy of FNB vs FNA in determining the diagnosis of solid *** A retrospective,multi-center study of EUS-guided tissue sampling using FNA vs FNB *** outcomes included diagnostic test characteristics(i.e.,sensitivity,specificity,accuracy),use of rapid on-site evaluation(ROSE),and adverse *** analyses were performed by type of lesion and diagnostic yield with or without ROSE.A multivariable logistic regression was also *** A total of 1168 patients with solid lesions(n=468 FNA;n=700 FNB)underwent EUS-guided *** age was 65.02±12.13 ***,sensitivity,specificity and accuracy were superior for FNB vs FNA(84.70%vs 74.53%;99.29%vs 96.62%;and 87.62%vs 81.55%,respectively;Pcificity,and accuracy of FNB alone were similar to FNA+ROSE[(81.66%vs 86.45%;P=0.142),(100%vs 100%;P=1.00)and(88.40%vs 85.43%;P=0.320].There were no difference in diagnostic yield of FNB alone vs FNB+ROSE(P>0.05).Multivariate analysis showed no significant predictor for better *** subgroup analyses,FNB was superior to FNA for non-pancreatic lesions;however,there was no difference between the techniques among pancreatic *** adverse event was reported in each *** FNB is superior to FNA with equivalent diagnostic test characteristics compared to FNA+ROSE in the diagnosis of non-pancreatic solid *** results suggest that EUS-FNB may eliminate the need of ROSE and should be employed as a first-line method in the diagnosis of solid lesions.

关键词： Endoscopic ultrasound-guided tissue acquisition Fine needle aspiration Fine needle biopsy Solid lesions Endoscopic ultrasound cancer

Effectiveness and safety of opicapone in Parkinson’s disease patients with motor fluctuations: the OPTIPARK open-label study

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Translational Neurodegeneration 2020年第1期9卷 96-104页

作者： Heinz Reichmann Andrew Lees José-Francisco Rocha diogo Magalhaes Patrício Soares-da-Silva the OPTIPARK investigators Department of Neurology University of DresdenDresdenGermany University college London Reta Lila Weston InstituteLondonUK Global Parkinson’s Disease Department BIAL–Portela&CA S.ACoronadoPortugal Research and Development Department BIAL–Portela&CA S.Ada Siderurgia Nacional4745-457 S Mamede do CoronadoPortugal Department of Pharmacology and Therapeutics Faculty of MedicineUniversity PortoPortoPortugal MedInUP Center for Drug Discovery and Innovative MedicinesUniversity PortoPortoPortugal 不详

Background:The efficacy and safety of opicapone,a once-daily catechol-O-methyltransferase inhibitor,have been established in two large randomized,placebo-controlled,multinational pivotal ***,clinical evidence from routine practice is needed to complement the data from the pivotal ***:OPTIPARK(NcT02847442)was a prospective,open-label,single-arm trial conducted in Germany and the UK under clinical practice *** with Parkinson’s disease and motor fluctuations were treated with opicapone 50 mg for 3(Germany)or 6(UK)months in addition to their current levodopa and other antiparkinsonian *** primary endpoint was the clinician’s Global Impression of change(cGI-c)after 3 *** assessments included Patient Global Impressions of change(PGI-c),the Unified Parkinson’s Disease Rating Scale(UPDRS),Parkinson’s Disease Questionnaire(PDQ-8),and the Non-Motor Symptoms Scale(NMSS).Safety assessments included evaluation of treatment-emergent adverse events(TEAEs)and serious adverse events(SAEs).Results:Of the 506 patients enrolled,495(97.8%)took at least one dose of *** these,393(79.4%)patients completed 3 months of ***,71.3 and 76.9%of patients experienced any improvement on cGI-c and PGI-c after 3 months,respectively(full analysis set).At 6 months,for UK subgroup only(n=95),85.3%of patients were judged by investigators as improved since commencing *** scores at 3 months showed statistically significant improvements in activities of daily living during OFF(mean±SD change from baseline:?3.0±4.6,pcores during ON(?4.6±8.1,pcally significant versus baseline(both pconsidered to be at least possibly related to opicapone were reported for 45.1%of patients,with dyskinesia(11.5%)and dry mouth(6.5%)being

关键词： Levodopa Motor fluctuations Open-label Opicapone Parkinson’s disease

SUSTAINABLE DEVELOPMENT OF cROP-LIVESTOcK FARMS IN AFRIcA

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Frontiers of Agricultural Science and Engineering 2021年第1期8卷 175-181页

作者： Mariana c.RUFINO charles K.K.GAcHENE Rodrigue V.c.diogo James haWKINS Alice A.ONYANGO Ousmane M.SANOGO Ibrahim WANYAMA Gabriel YESUF David E.PELSTER Lancaster Environment centre Lancaster UniversityLancasterLA14YQUK Department of Land Resource Management and Agricultural Technology University of NairobiNairobiP.O.Box 29053-00625Kenya Faculty of Agricultural Sciences University of ParakouParakouP.O.Box 123Benin International Livestock Research Institute(ILRI) NairobiP.O.Box 30709-00100Kenya Institut d'Economie Rurale SikassoBP 16Mali Agriculture and Agri-Food canada 2560 Blvd HochelagaQuebec CityG1V 2J3Canada

crop-livestock farms across Africa are highly variable due to in agroecological and socioeconomic factors,the latter shaping the demand and supply of livestock ***-livestock farms in Africa in the 20-first century are very different from most mixed farms elsewhere in the *** crop-livestock farms are smaller in size,have fewer livestock,lower productivity and less dependency on imported feed than farms in most countries of Europe,the Americas and the intensive agricultural systems of *** paper discusses the role African crop-livestock farms have in the broader socio-agricultural economy,and how these are likely to change adapting to pressures brought on by the intensification of food *** intensification implies increasing land productivity(more food per hectare),often leading to more livestock heads per farm,producing fertilized feeds in croplands and importing feed supplements from the *** discussion includes(1)the links between crop yields,soil fertility and crop-livestock integration,(2)the increasing demand for livestock products and the land resources required to meet to this demand,and(3)the opportunities to integrate broader societal goals into the development of crop-livestock *** is ample room for development of crop-livestock farms in Africa,and keeping integration as part of the development will help prevent many of the mistakes and environmental problems related to the intensification of livestock production observed elsewhere in the *** development can integrate biodiversity,climate change adaptation and mitigation to the current goals of increasing productivity and food *** inclusion of broader goals could help farmers access the level of finance required to implement changes.

关键词： finance integrate goals

Anal canal gastrointestinal stromal tumors:case report and literature review

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World Journal of Gastroenterology 2014年第1期20卷 319-322页

作者： Nuno carvalho diogo Albergaria Rui Lebre Joo Giria Vitor Fernandes Helena Vidal Maria José Brito Department of General Surgery Garcia de Orta Hospital2801-951 AlmadaPortugal Department of Gastroenterology Garcia de Orta Hospital2801-951 AlmadaPortugal Department of Radiology Garcia de Orta Hospital2801-951 AlmadaPortugal Department of Pathology Garcia de Orta Hospital2801-951 AlmadaPortugal

Gastrointestinal stromal tumors (GIST) are an uncommon group of tumors of mesenchymal origin. GIST of the anal canal is extremely rare. At present, only 10 cases of c-kit positive anal GIST have been reported in the literature. There is no widely accepted treatment approach for this neoplasia. Literature is sparse on imaging evaluation of anal canal GIST, usually described as a lesion in the intersphincteric space. We describe the case of a 73-year-old man with a mass in the anal canal, and no other symptoms. Endoanal ultrasound and magnetic resonance imaging showed a well circumscribed solid nodule in the intersphincteric space. The patient was treated by local excision. Gross pathological examination showed a 7 cm × 3.5 cm × 3 cm mass, and histological examination showed a proliferation of spindle cells, with prominent nuclear palisading. The mitotic count was of 12 mitoses/50 HPF. The tumor was positive for KIT protein, cD34 and vimentin in the majority of cells, and negative for desmin and S100. A diagnosis of GIST, with high risk aggressive behavior was made. An abdomino-perineal resection was discussed, but refused. The follow-up included clinical evaluation and anal ultrasound. After 5 years the patient is well, with maintained continence and no evidence of local recurrence.

关键词： Gastrointestinal stromal tumors Anal canal Endoanal ultrasound Magnetic resonance imaging c-Kit receptor Local excision