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1Cerebral ischemia and neuroregeneration显示文摘Cerebral ischemia is one of the leading causes of morbidity and mortality worldwide. Although stroke(a form of cerebral ischemia)-related costs are expected to reach 240.67 billion dollars by 2030, options for treatment against cerebral ischemia/stroke are limited. All therapies except anti-thrombolytics(i.e., tissue plasminogen activator) and hypothermia have failed to reduce neuronal injury, neurological deficits, and mortality rates following cerebral ischemia, which suggests that development of novel therapies again st stroke/cerebral ischemia are urgently needed. Here, we discuss the possible mechanism(s) underlying cerebral ischemia-induced brain injury, as well as current and future novel therapies(i.e., growth factors, nicotinamide adenine dinucleotide, melatonin, resveratrol, protein kinase C isozymes, pifithrin, hypothermia, fatty acids, sympathoplegic drugs, and stem cells) as it relates to cerebral ischemia.Reggie H.C.Lee Michelle H.H.Lee Celeste Y.C.Wu Alexandre Couto e Silva Harlee E.Possoit Tsung-Han Hsieh Alireza Minagar Hung Wen Lin 2018Neural Regeneration Research2018,13,3:30
2Acute calculous cholecystitis: Review of current best practices显示文摘Acute calculous cholecystitis(ACC) is the most frequent complication of cholelithiasis and represents one-third of all surgical emergency hospital admissions, many aspects of the disease are still a matter of debate. Knowledge of the current evidence may allow the surgical team to develop practical bedside decision-making strategies, aiming at a less demanding procedure and lower frequency of complications. In this regard, recommendations on the diagnosis supported by specific criteria and severity scores are being implemented, to prioritize patients eligible for urgency surgery. Laparoscopic cholecystectomy is the best treatment for ACC and the procedure should ideally be performed within 72h. Early surgery is associated with better results in comparison to delayed surgery. In addition, when to suspect associated common bile duct stones and how to treat them when found are still debated. The antimicrobial agents are indicated for high-risk patients and especially in the presence of gallbladder necrosis. The use of broad-spectrum antibiotics and in some cases with antifungal agents is related to better prognosis. Moreover, an emerging strategy of not converting to open, a difficult laparoscopic cholecystectomy and performing a subtotal cholecystectomy is recommended by adept surgical teams. Some authors support the use of percutaneous cholecystostomy as an alternative emergency treatment for acute Cholecystitis for patients with severe comorbidities.Carlos Augusto Gomes Cleber Soares Junior Salomone Di Saveiro Massimo Sartelli Michel Denis Kelly Camila Couto Gomes Felipe Couto Gomes Lívia Dornellas Correa Camila Brandao Alves Samuel de Fádel Guimaraes 2017World Journal of Gastrointestinal Surgery2017,9,5:18
3Probiotics as a complementary therapeutic approach in nonalcoholic fatty liver disease显示文摘Nonalcoholic fatty liver disease(NAFLD) is currently recognized as one of the most common causes of chronic liver disease. It involves a spectrum of conditionsthat include pure steatosis without inflammation, steatohepatitis, fibrosis and cirrhosis. The key factor in the pathophysiology of NAFLD is insulin resistance that determines lipid accumulation in the hepatocytes and, thus, oxidative stress, which is followed by inflammatory response. However, NAFLD pathogenesis is still largely unknown and has been extensively investigated. Although life style modification with the aim of losing weight has been advocated to treat this disorder, its effectiveness is limited; additionally, there is no specific pharmacologic treatment until nowadays. Recent evidence suggests that the gut microbiota may play a role in the development of insulin resistance, hepatic steatosis, necroinflammation and fibrosis. Differences in gut microbiota between NAFLD patients and lean individuals as well as presence of small intestinal bacterial overgrowth in NAFLD subjects have been demonstrated. Furthermore, some data indicate that the immunoregulatory effects of probiotics may be beneficial in NAFLD treatment as they modulate the intestinal microbiota; improve epithelial barrier function and strengthen the intestinal wall decreasing its permeability; reduce bacterial translocation and endotoxemia; improve intestinal inflammation; and reduce oxidative and inflammatory liver damage. In this article, we review the clinical trials on the use of probiotics in the treatment of NAFLD and discuss the effects of these agents and their efficacy as an emerging therapeutic resource to treat NAFLD patients.Silvia Marinho Ferolla Geyza Nogueira de Almeida Armiliato Claudia Alves Couto Teresa Cristina Abreu Ferrari 2015World Journal of Hepatology2015,7,3:13
4GNAQ和GNA11体细胞突变导致先天性血管瘤发生显示文摘先天性血管瘤是一种出生前形成的罕见的血管性肿瘤。出生后肿瘤快速消退(RICH)或部分消退(NICH)。该文作者提出假设,体细胞突变导致先天性血管瘤发生。对8例患儿进行m RNA测序。Ayturk UM Couto JA Hann S 2016中国口腔颌面外科杂志2016,14,3:11
5Postpartum depression:A systematic review of the genetics involved显示文摘Postpartum depression is one of the most prevalent psychopathologies. Its prevalence is estimated to be between 10% and 15%. Despite its multifactorial etiology, it is known that genetics play an important role in the genesis of this disorder. This paper reviews epidemiological evidence supporting the role of genetics in postpartum depression(PPD). The main objectives of this review are to determine which genes and polymorphisms are associated with PPD and discuss how this association may occur. In addition, this paper explores whether these genes are somehow related to or even the same as those linked to Major Depression(MD). To identify gaps in the current knowledge that require investigation, a systematic review was conducted in the electronic databases Pub Med, LILACS and Sci ELO using the index terms 'postpartum depression' and 'genetics'. Literature searches for articles in peerreviewed journals were made until April 2014. PPD was indexed 56 times with genetics. The inclusion criteria were articles in Portuguese, Spanish or English that were available by institutional means or sent by authors upon request; this search resulted in 20 papers. Genes and polymorphisms traditionally related to MD, which are those involved in the serotonin, catecholamine, brain-derived neurotrophic factor and tryptophan metabolism, have been the most studied, and some have been related to PPD. The results are conflicting and some depend on epigenetics, which makes the data incipient. Further studies are required to determine the genes that are involved in PPD and establish the nature of the relationship between these genes and PPD.Tiago Castro e Couto Mayra Yara Martins Brancaglion António Alvim-Soares Lafaiete Moreira Frederico Duarte Garcia Rodrigo Nicolato Humberto Corrêa Regina Amélia Lopes P Aguiar Henrique Vitor Leite 2015World Journal of Psychiatry2015,5,1:5
6Definition of the Portuguese frameworks with international relevance as an input for the European geological heritage characterisation显示文摘J. Brilha C. Andrade A. Azeredo F.J.A.S. Barriga M. Cachāo2 H. Couto P.P. Cunha J.A. Crispim P. Dantas L. V. Duarte M. C Freitas H.M. Granja M.H. Henriques P. Henriques L. Lopes J. Madeira J.M.X. Matos F. Noronha J. Pais J. Pifarra M.M. Ramalho J.M.R.S. Relvas A. Ribeiro A. Santos V.F.Santos P. Terrinha 2005Episodes2005,28,3:5
7Osteoblasts are inherently programmed to repel sensory innervation显示文摘Tissue innervation is a complex process controlled by the expression profile of signaling molecules secreted by tissue-resident cells that dictate the growth and guidance of axons.Sensory innervation is part of the neuronal network of the bone tissue with a defined spatiotemporal occurrence during bone development.Yet,the current understanding of the mechanisms regulating the map of sensory innervation in the bone tissue is still limited.Here,we demonstrated that differentiation of human mesenchymal stem cells to osteoblasts leads to a marked impairment of their ability to promote axonal growth,evidenced under sensory neurons and osteoblastic-lineage cells crosstalk.The mechanisms by which osteoblast lineage cells provide this nonpermissive environment for axons include paracrine-induced repulsion and loss of neurotrophic factors expression.We identified a drastic reduction of NGF and BDNF production and stimulation of Sema3A,Wnt4;and Shh expression culminating at late stage of OB differentiation.We noted a correlation between Shh expression profile,OB differentiation stages,and OB-mediated axonal repulsion.Blockade of Shh activity and signaling reversed the repulsive action of osteoblasts on sensory axons.Finally,to strengthen our model,we localized the expression of Shh by osteoblasts in bone tissue.Overall,our findings provide evidence that the signaling profile associated with osteoblast phenotype differentiating program can regulate the patterning of sensory innervation,and highlight osteoblast-derived Shh as an essential player in this cue-induced regulation.Luis Leitao Estrela Neto Francisco Conceicao Ana Monteiro Marina Couto Cecilia JAlves Daniela MSousa Meriem Lamghari 2020Bone Research2020,8,3:4
8Antioxidant and anti-inflammatory action of melatonin in an experimental model of secondary biliary cirrhosis induced by bile duct ligation显示文摘AIM To evaluate the effects of melatonin(Mel) on oxidative stress in an experimental model of bile duct ligation(BDL).METHODS Male Wistar rats(n = 32, weight ± 300 g) were allocated across four groups: CO(sham BDL), BDL(BDL surgery), CO + Mel(sham BDL and Mel administration) and BDL + Mel(BDL surgery and Mel administration). Mel was administered intraperitoneally for 2 wk, starting on postoperative day 15, at a dose of 20 mg/kg.RESULTS Mel was effective at the different standards, reestablishing normal liver enzyme levels, reducing the hepatosomatic and splenosomatic indices, restoring lipoperoxidation and antioxidant enzyme concentrations, reducing fibrosis and inflammation, and thereby reducing liver tissue injury in the treated animals.CONCLUSION The results of this study suggest a protective effect of Mel when administered to rats with secondary biliary cirrhosis induced by BDL.Josieli Raskopf Colares Elizângela Goncalves Schemitt Renata Minuzzo Hartmann Francielli Licks Mariana do Couto Soares Adriane Dal Bosco Norma Possa Marroni 2016World Journal of Gastroenterology2016,22,40:3
9Smart Transformer/Large Flexible Transformer显示文摘Solid-state transformer-based smart transformer(ST)can provide the dc connectivity and advanced services to improve the grid performance and to increase the penetration of the power electronics interfaced resources(e.g.,distributed generators and electric vehicle charging stations)in modern electricity distribution grids.Since the ST is a new and effective paradigm of the electricity grid evolution to well understand the ST,this paper systematically presents the basic architecture and the typical control schemes of the ST and then the advanced services that ST can provide to improve the electricity grids performances in terms of the power flow control,power quality improvement,active damping and active contribution to improve distribution grid resilience by means of enabling autonomous microgrids operation as well as launching a restoration procedure following a general blackout.Rongwu Zhu Markus Andresen Marius Langwasser Marco Liserre Joao Pecas Lopes Carlos Moreira Justino Rodrigues Mario Couto 2020CES Transactions on Electrical Machines and Systems2020,4,4:3
10Wood density and carbon concentration of coarse woody debris in native forests,Brazil显示文摘Background: With the objective of increasing knowledge on biomass and carbon stocks, and thus improving the accuracy of published estimates, the present study explored wood density and carbon concentration of coarse woody debris (diameter≥10) by decay class in a Seasonal Semi-deciduous Forest (SSF) area in the Atlantic Rain Forest and in a Cerrado sensu-stricto (CSS) area (Brazilian savanna), in Brazil. Two strata were identified in each area and ten sampling units were systematic located in each stratum. Data were collected according to the line intersect sampling method. Each tallied element, the diameter, length, and perpendicular width were recorded at the transect intersection point. Each element was classified into a decay class, and the species was identified when possible. Sample discs were cut from each element, from which cylindrical samples were extracted and oven-dried to determine density. These cylinders were milled and analyzed using a LECO-C632 to determine carbon concentration as percentage of mass. Results: In both areas, wood density decreased as the decay class increased. For SSF the mean carbon concentration of all analyzed samples was 49.8% with a standard deviation of 3.3, with a range of 27.9–57.0% across 506 observations. For CSS the general mean was 49.6% with a standard deviation of 2.6, with a range of 31.2–54.5% over 182 observations. Carbon concentration barely change between decay classes. Carbon stock was estimated at 3.3 and 0.7 MgC/ha for the SSF and the CSS, respectively. Similar results were obtained when using a 50% conversion constant. Conclusions: The present study concludes that wood density decreases as the woody debris becomes more decomposed, a pattern found in many previous studies. The carbon concentration, however, barely changes between decay classes, and that result is consistent with most of the literature reviewed. Our carbon concentrations are very close to the 50% used most commonly as a conversion factor. We strongly recommend that future studies of CWD evaluate wood density and carbon concentration by decay class to address the uncertainty still found in the literature.Andrea B.Moreira Timothy G.Gregoire Hilton Thadeu Z.do Couto 2019Forest Ecosystems2019,6,2:3
11Re-bleeding events in patients with obscure gastrointestinal bleeding after negative capsule endoscopy显示文摘AIM: To investigate long-term re-bleeding events after a negative capsule endoscopy in patients with obscure gastrointestinal bleeding(OGIB) and the risk factors associated with the procedure.METHODS: Patients referred to Hospital Egas Moniz(Lisboa, Portugal) between January 2006 and October 2012 with OGIB and a negative capsule endoscopy were retrospectively analyzed. The following study variables were included: demographic data, comorbidities, bleeding-related drug use, hemoglobin level, indication for capsule endoscopy, post procedure details, work-up and follow-up. Re-bleeding rates and associated factors were assessed using a Cox proportional hazard analysis. The Kaplan-Meier method was used to estimate the cumulative incidence of re-bleeding at 1, 3 and 5 years, and the differences between factors were evaluated.RESULTS: The study population consisted of 640 patients referred for OGIB investigation. Wireless capsule endoscopy was deemed negative in 113 patients(17.7%). A total of 64.6% of the population was female, and the median age was 69 years. The median follow-up was forty-eight months(interquartile range 24-60). Re-bleeding occurred in 27.4% of the cases. The median time to re-bleeding was fifteen months(interquartile range 2-33). In 22.6%(n = 7) of the population, small-bowel angiodysplasia was identified as the culprit lesion. A univariate analysis showed that age > 65 years old, chronic kidney disease, aortic stenosis, anticoagulant use and overt OGIB were risk factors for re-bleeding; however, on a multivariate analysis, there were no risk factors for re-bleeding. The cumulative risk of re-bleeding at 1, 3 and 5 years of follow-up was 12.9%, 25.6% and 31.5%, respectively.Patients who presented with overt OGIB tended to rebleed sooner(median time for re-bleeding: 8.5 mo vs 22 mo).CONCLUSION: Patients with OGIB despite a negative capsule endoscopy have a significant re-bleeding risk; therefore, these patients require an extended follow-up strategy.Pedro Magalhes-Costa Miguel Bispo Sofia Santos Gilberto Couto Leopoldo Matos Cristina Chagas 2015World Journal of Gastrointestinal Endoscopy2015,7,4:3
12N-acetylcysteine modulates angiogenesis and vasodilation in stomach such as DNA damage in blood of portal hypertensive rats显示文摘AIM: To evaluate the antioxidant effect of N-acetylcysteine(NAC) on the stomach of rats with portal hypertension.METHODS: Twenty-four male Wistar rats weighing ± 250 g were divided into four experimental groups(n =6 each): Sham-operated(SO),SO + NAC,partial portal vein ligation(PPVL),and PPVL + NAC. Treatment with NAC in a dose of 10 mg/kg(i.p.) diluted in 0.6 m L of saline solution was administered daily for 7 d starting 8 d after the surgery. Animals from the PPVL and SO group received saline solution(0.6 m L) for the same period of time as the PPVL + NAC and SO + NAC group. On the 15 th day the animals were anesthetized and we evaluated portal pressure by cannulating mesenteric artery. After,we removed the stomach for further analysis. We performed immunohistochemical analysis for endothelial nitric oxide synthase(e NOS),vascular endothelial growth factor(VEGF),and nitrotirosine(NTT) proteins in stomach. We also evaluated e NOS and VEGF by Western blot analysis and assessed DNA damage in blood samples by the comet assay.RESULTS: The portal hypertension group exhibited increases in portal pressure when compared to SO group(29.8 ± 1.8 vs 12.0 ± 0.3 mm Hg)(P < 0.001). The same was observed when we compared the e NOS(56.8 ± 3.7 vs 13.46 ± 2.8 pixels)(P < 0.001),VEGF(34.9 ± 4.7 vs 17.46 ± 2.6 pixels)(P < 0.05),and NTT(39.01 ± 4.0 vs 12.77 ± 2.3 pixels)(P < 0.05) expression by immunohistochemistry of the PPVL animals with the SO group. The expression of e NOS(0.39 ± 0.03 vs 0.25 ± 0.03 a.μ)(P < 0.01) and VEGF(0.38 ± 0.04 vs 0.26 ± 0.04 a.μ)(P < 0.01) were also evaluated by Western blot analysis,and we observed an increase of both proteins on PPVL animals. We also evaluated the DNA damage by comet assay,and observed an increase on damage index and damage frequency on those animals. NAC decreased portal pressure values in PPVL + NAC animals(16.46 ± 2 vs 29.8 ± 1.8 mm Hg)(P < 0.001) when compared to PPVL. The expression of e NOS(14.60 ± 4.1 vs 56.8 ± 3.7 pixels)(P < 0.001),VEGF(19.53 ± 3.2 vs 34.9 ± 4.7 pixels)(P < 0.05) and NTT(21.84 ± 0.7 vs 39.01 ± 4.0 pixels)(P < 0.05) evaluated by immunohistochemistry were also reduced in PPVL + NAC animals. Also,when evaluated by Western blot e NOS expression(0.32 ± 0.03 vs 0.39 ± 0.03 a.μ)(P < 0.05) and VEGF expression(0.31 ± 0.09 vs 0.38 ± 0.04 a.μ)(P < 0.01). Furthermore,NAC modulated DNA damage in PPVL + NAC animals.CONCLUSION: In view of these results,we believe NAC is able to protect the stomach from the alterations induced by the PPVL procedure.Francielli Licks Renata Minuzzo Hartmann Camila Marques Elizangela Schemitt Josieli Raskopf Colares Mariana do Couto Soares Juliana Reys Camila Fisher Juliana da Silva Norma Possa Marroni 2015World Journal of Gastroenterology2015,21,43:2
13Dietary approach in the treatment of nonalcoholic fatty liver disease显示文摘Nonalcoholic fatty liver disease(NAFLD) has been identified as one of the most prevalent chronic liver disease in adults and children populations. NAFLD is usually associated with the metabolic syndrome(MS), which is chiefly related to insulin resistance and its consequences. Insulin resistance has a crucial role in the pathogenesis of hepatic steatosis and potentially nonalcoholic steatohepatitis(NASH). Because of the contemporary epidemics of MS and obesity, the burden of NAFLD is also expected to rise. Unhealthy diets, such as the so-called western diet, are enriched in fructose, trans-fatty acids and saturated fat and seem to be associated with the development of NAFLD. In human studies, certain dietary sugars, particularly fructose, are used as a substrate for lipogenesis leading to hepatic fatty infiltration, inflammation, and possibly fibrosis. Other investigations have shown that fat consumption especially cholesterol and trans/saturated fatty acids are also steatogenic and seem to increase visceral adiposity. The identification of specific dietary components that favor the development of NASH could be important for the management of this disorder. This review focuses on the effects of different dietary approaches to prevent and treat NAFLD emphasizing the macronutrients and energy composition.Silvia Marinho Ferolla Luciana Costa Silva Maria de Lourdes Abreu Ferrari Aloísio Sales da Cunha Flaviano dos Santos Martins Cláudia Alves Couto Teresa Cristina Abreu Ferrari 2015World Journal of Hepatology2015,7,24:2
14Insulation coordinationconsidering the switching overvoltage waveshape,partⅡ:ap-plication and results显示文摘Nunes R R Do Couto Boaventura W 2009IEEE Transactions on Power Deliver-y2009,24,4:1
15In-vitro comparison of 2 cone-beam computed tomography systems and panoramic imaging for detecting simulated canine impaction-induced external root resorption in maxillary lateral incisors显示文摘Ali Alqerban Reinhilde Jacobs Paulo Couto Souza Guy Willems 2009American Journal of Orthodontics & Dentofacial Orthopedics2009,,6:1
16ADAM: A Tested for Exploring the Use of Data Mining in Intrusion Detection显示文摘Daniel Barbara Julia Couto Sushil Jajodia 2001SIGMOD2001,30,4:1
17A high-throughput path metric for multi-hop wireless routing 显示文摘De Couto DSJ Aguayo D Bicket J 2005Wireless Networks2005,11,4:1
18A nowd LEMD3 mutatinn common to pa- tients with osteopoikiliosis with and without melorheostosis 显示文摘Couto AR Bruges-Armas J Peach CA Chapman K Brown MA Wordsworth BP 2007Calcif Tissue Int2007,81,2:1
19Caroli' s Disease and Orthotopic Liver Transplantation 显示文摘Shahid Habib Obaid Shakil Osvaldo F Couto 2006Liver Transp12006,12,3:1
20Dipeptidyl pq)tidase IV inhibitionattmiates blood pressure rising in young spontaneously hypertensive rats显示文摘Pacheco BP Crajoinas RO Couto GK 2011JHypertens2011,29,:1
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