Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 372
Filtrar
1.
Kathmandu Univ Med J (KUMJ) ; 21(82): 197-206, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38628015

RESUMO

Background Mental health and behavior problems are under-recognized in low- and middleincome countries, especially in young children. Early identification of these problems could encourage governments to address the shortages of child mental health professionals and promote early intervention programs to help children achieve their full developmental potential. Objective Describe the social-emotional development of young rural Nepali children; explore risk factors for poor development. Method The study was embedded in a longitudinal intervention trial comparing control households with those who received training in family nutrition+livestock management (Partial Package) or family nutrition+livestock management+community mobilization (Full Package). At midline, enumerators completed a 145-item household questionnaire, child anthropometry, and Administered the Ages and Stages Questionnaire-Social-Emotional (ASQ-SE) to all enrolled children age 33-47 months (n=310). Bivariate and regression analyses examined the relationship of child and household risk factors to administered the Ages and Stages QuestionnaireSocial-Emotional scores. Result Administered the Ages and Stages Questionnaire-Social-Emotional scores were below age cutoffs in 24% of children, suggesting worse social-emotional development. In bivariate analyses and the adjusted linear regression model, older child age, greater household wealth, and Full Package Intervention status were all associated with better social-emotional development scores. Partial Package Intervention status was associated with worse scores. Conclusion The Administered the Ages and Stages Questionnaire-Social-Emotional is a potential tool to assess child social-emotional development in the context of household and community level interventions. Further work is necessary to validate the administered the Ages and Stages Questionnaire-Social-Emotional and similar tools in Nepal, and to better understand the prevalence of challenges to optimal socialemotional development in young children in order to use this information to design and monitor needed interventions.


Assuntos
Desenvolvimento Infantil , Pré-Escolar , Humanos , Nepal , Medição de Risco , Fatores Socioeconômicos , Inquéritos e Questionários
2.
Proc Biol Sci ; 287(1931): 20200922, 2020 07 29.
Artigo em Inglês | MEDLINE | ID: mdl-33043867

RESUMO

Most of the world's crops depend on pollinators, so declines in both managed and wild bees raise concerns about food security. However, the degree to which insect pollination is actually limiting current crop production is poorly understood, as is the role of wild species (as opposed to managed honeybees) in pollinating crops, particularly in intensive production areas. We established a nationwide study to assess the extent of pollinator limitation in seven crops at 131 locations situated across major crop-producing areas of the USA. We found that five out of seven crops showed evidence of pollinator limitation. Wild bees and honeybees provided comparable amounts of pollination for most crops, even in agriculturally intensive regions. We estimated the nationwide annual production value of wild pollinators to the seven crops we studied at over $1.5 billion; the value of wild bee pollination of all pollinator-dependent crops would be much greater. Our findings show that pollinator declines could translate directly into decreased yields or production for most of the crops studied, and that wild species contribute substantially to pollination of most study crops in major crop-producing regions.


Assuntos
Agricultura , Produtos Agrícolas , Polinização , Animais , Abelhas , Abastecimento de Alimentos , Estados Unidos
3.
Eur J Orthop Surg Traumatol ; 29(4): 883-891, 2019 May.
Artigo em Inglês | MEDLINE | ID: mdl-30656430

RESUMO

PURPOSE: Tibial-side avulsion injuries of the posterior cruciate ligament are rare injuries. In displaced fracture, the reduction and fixation is the treatment of choice, although the optimal surgical management has not yet been determined. The aim of this study was to evaluate the clinical, functional, and radiological outcome after an open reduction and internal fixation with staples of a posterior cruciate ligament tibial avulsion. METHODS: A historical cohort of patients who underwent open reduction and internal fixation with staple due to a posterior cruciate ligament tibial avulsion were reviewed. Minimum follow-up was 2 years. Demographic, clinical, and radiological data, including stress X-ray, were analyzed. Also, International Knee Documentation Committee Score, Tegner Knee Score, Lysholm Knee Score, Short-Form Health Survey, and four-point Likert scale were evaluated. RESULTS: Four males (57%) and 3 females (43%) were included in the final analysis. The mean age was 39 years (range 27-54). All patients had a fracture union. No implant migration was observed. Postoperative posterior drawer, reverse pivot shift, and varus/valgus stress were negative. In stress TELOS X-ray, no statistically significant differences were observed between the postoperative and contralateral knee. All evaluated scores had good or excellent results. CONCLUSIONS: Our study provides further evidence that the use of an open reduction and internal fixation with a staple could be a simple and reliable management for posterior cruciate ligament avulsion fractures of the tibia. In our study, the postoperative stress TELOS X-ray analyze showed a correct fixation and biomechanical function of the posterior cruciate ligament.


Assuntos
Fixação Interna de Fraturas/métodos , Fratura Avulsão/cirurgia , Articulação do Joelho/diagnóstico por imagem , Ligamento Cruzado Posterior/lesões , Ligamento Cruzado Posterior/cirurgia , Grampeamento Cirúrgico , Adulto , Estudos de Coortes , Feminino , Seguimentos , Consolidação da Fratura , Humanos , Masculino , Pessoa de Meia-Idade , Redução Aberta , Avaliação de Resultados da Assistência ao Paciente , Satisfação do Paciente , Ligamento Cruzado Posterior/diagnóstico por imagem , Estudos Retrospectivos , Estresse Mecânico
4.
Opt Lett ; 43(21): 5383-5386, 2018 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-30383013

RESUMO

In this Letter, we experimentally demonstrate a terahertz (THz) whispering gallery mode (WGM) sensor based on a sapphire WGM resonator. The fundamental mode at 129.49 GHz with a Q-factor of 4.63×103 is used to study its sensitivity to adsorbed molecules. The efficiency of our sensor to detect rhodamine 6G dye molecules in a polyvinyl alcohol matrix at room temperature has been manifested, and a detection sensitivity of 25 parts per million has been achieved. Also, we report an analytical approach based on coupled-mode theory between the waveguide mode and the spherical resonator mode to evaluate the absorption coefficient of the adsorbed molecule on the resonator. The model is modified to evaluate optical constants of materials. The results obtained have been verified by continuous-wave THz transmission results. The results are of importance in sensing, metrology, and material characterization.

5.
J Environ Manage ; 206: 1179-1191, 2018 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-29183650

RESUMO

Wetlands play a major role in the recharge of groundwater resources, maintenance of water quality (remediation), moderate microclimate while supporting local livelihood through provision of fish, fodder, etc. The present study aims to investigate algal-bacterial consortium as a function of residence time with the water quality dynamics in two major wetlands in Bangalore city, India. Over thirty-two genera of algae were recorded with more than 40 species in the lakes and two dominant bacterial assemblages. The higher Ammonium-N content favoured the growth of these members. Significant correlation was observed between the nutrient concentrations and the community structure at the inflows and the outflows. The algal community showed negative correlation to filterable COD and high nutrients levels while bacterial abundance was observed under high loadings. The green algae Chlorophyceae (Chlorella blooms), which are indicators of nutrient enrichment were observed predominantly, that needs an immediate attention. Higher overall treatment efficiency was observed in terms of CNP removal during the Pre-monsoon season attributed to absence of macrophytes cover and rapid growth of algal assemblage's due to higher temperature regimes with adequate solar insolation.


Assuntos
Chlorella , Áreas Alagadas , Animais , Peixes , Índia , Lagos
6.
J Appl Microbiol ; 122(1): 139-152, 2017 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-27665751

RESUMO

AIM: To identify the different antifungal biomolecules produced by isolate Bacillus vallismortis R2 and analyse their effect on Alternaria alternata, a common pathogen causing black point disease of wheat. METHODS AND RESULTS: The different antifungal molecules produced by isolate R2 were purified by column chromatography. The liquid chromatography-mass spectrometry of purified fractions confirmed the ability of R2 to produce biomolecules putatively similar to three different families of cyclic lipopeptides (CLPs) viz. surfactins, iturins and fengycins. The synergistic interaction among CLPs was evident from significant increase in the antifungal activity of mixture of purified fractions as compared to that of the individual fractions by agar well diffusion assay. The evaluation of antifungal activity of purified fractions by 96-well microtitre plate assay showed that the fengycin-like molecules supported significantly higher antifungal activity against A. alternata than iturin A and no antifungal activity was supported by surfactin. CONCLUSIONS: The isolate R2, producing different CLPs, can be used as an environmental friendly alternative to chemical fungicides. Among the three different CLPs viz. surfactin, iturin A and fengycin produced by R2, the fengycins were the most active lipopeptides. SIGNIFICANCE AND IMPACT OF THE STUDY: This is the first report on co-production of three different types of CLPs by the cells of B. vallismortis.


Assuntos
Alternaria/efeitos dos fármacos , Lipopeptídeos/metabolismo , Lipopeptídeos/farmacologia , Peptídeos Cíclicos/metabolismo , Peptídeos Cíclicos/farmacologia , Alternaria/crescimento & desenvolvimento , Antifúngicos/química , Antifúngicos/metabolismo , Antifúngicos/farmacologia , Bacillus/química , Bacillus/metabolismo , Cromatografia Líquida , Lipopeptídeos/química , Espectrometria de Massas , Peptídeos Cíclicos/química , Doenças das Plantas/microbiologia , Triticum/microbiologia
7.
Clin Exp Dermatol ; 42(6): 648-650, 2017 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-28543318

RESUMO

ELISA for anti-desmoglein antibodies (Dsg) is commonly used for diagnosis and assessment of treatment response in pemphigus vulgaris (PV). The present study was conducted to assess the relationship between salivary and serum Dsg1 and Dsg3 levels, and whether salivary Dsg1 and Dsg3 levels correlate with clinical disease severity of oral mucosal lesions in PV. In total 43, patients with PV with predominantly mucosal involvement were recruited. Both serum and salivary samples were collected from the cases, and salivary samples were also collected from five controls. There was a statistically significant correlation between serum and salivary Dsg1 levels and between serum and salivary Dsg3 levels. There was no correlation between serum or salivary Dsg1 and Dsg3 levels with the objective component of the oral mucosal Autoimmune Bullous Skin Disorder Intensity Score (ABSIS). Serum Dsg1 levels significantly correlated with cutaneous ABSIS, but there was no correlation between cutaneous ABSIS and either salivary Dsg1, salivary Dsg3 or serum Dsg3. As salivary Dsg titres correlate with serum levels, saliva can serve as a simple and noninvasive alternative to serum for Dsg ELISA.


Assuntos
Anticorpos/análise , Desmogleína 1/imunologia , Desmogleína 3/imunologia , Pênfigo/imunologia , Saliva/imunologia , Adulto , Anticorpos/sangue , Desmogleína 1/análise , Desmogleína 3/análise , Ensaio de Imunoadsorção Enzimática , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Saliva/química , Índice de Gravidade de Doença
8.
J Wound Care ; 26(10): 600-606, 2017 10 02.
Artigo em Inglês | MEDLINE | ID: mdl-28976825

RESUMO

OBJECTIVE: This compares hospital suction negative pressure wound therapy (NPWT) with conventional gauze dressings in traumatic soft-tissue injury at a tertiary care centre. METHODS: A prospective control study was conducted between September 2012 and November 2014. Patients with one or more traumatic soft-tissue injuries with contaminated wounds were allocated to either a test group (received NPWT) or control group (received conventional gauze). Wounds were assessed by two orthopaedic surgeons. If grade A was achieved, the wound was covered with split-thickness skin graft, flap or delayed primary closure; otherwise, revision debridement and NPWT/saline gauze dressings were applied. Descriptive statistics (mean, standard deviation and proportions) were used to summarise the study variables. The 95% confidence intervals (CI) for difference of mean were used. Chi-square test and Fisher's exact test were used to observe an association between the qualitative data and outcome variables. Unpaired T-Test and Mann-Whitney U test were used for analysis of the quantitative data. A p<0.05 was considered statistically significant. RESULTS: A total of 104 patients were included. The mean number of dressings per patient was significantly lower in the NPWT group (3.4) than in the control group (20.7) (p<0.001). The time between injury and complete closure (12.5 versus 21.4 days) as well as duration of hospital stay (17.3 versus 23.8 days) was significantly less in the NPWT group (p<0.05). CONCLUSION: NPWT has a role in healing traumatic wounds and can be delivered effectively through hospital suction NPWT, which can also reduce the cost of therapy. We recommend its regular use in all patients presenting with post-traumatic, soft-tissue injuries when primary coverage is not possible.


Assuntos
Bandagens , Fraturas Ósseas/cirurgia , Tratamento de Ferimentos com Pressão Negativa/métodos , Infecção dos Ferimentos/epidemiologia , Ferimentos e Lesões/terapia , Acidentes por Quedas , Acidentes de Trânsito , Desbridamento , Fixadores Externos , Feminino , Fixação de Fratura , Fraturas Ósseas/complicações , Humanos , Tempo de Internação , Masculino , Transplante de Pele , Lesões dos Tecidos Moles/complicações , Lesões dos Tecidos Moles/terapia , Violência , Cicatrização , Ferimentos e Lesões/complicações
9.
Eur J Vasc Endovasc Surg ; 51(4): 518-26, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26919936

RESUMO

OBJECTIVES: Inflammation is critical in the pathogenesis of abdominal aortic aneurysm (AAA) disease. Combined (18)F-fludeoxyglucose ((18)F-FDG) positron emission tomography with computed tomography (PET-CT) and ultrasmall superparamagnetic particles of iron oxide (USPIO)-enhanced magnetic resonance imaging (MRI) are non-invasive methods of assessing tissue inflammation. The aim of this study was to compare these techniques in patients with AAA. MATERIALS AND METHODS: Fifteen patients with asymptomatic AAA with diameter 46 ± 7 mm underwent PET-CT with (18)F-FDG, and T2*-weighted MRI before and 24 hours after administration of USPIO. The PET-CT and MRI data were then co-registered. Standardised uptake values (SUVs) were calculated to measure (18)F-FDG activity, and USPIO uptake was determined using the change in R2*. Comparisons between the techniques were made using a quadrant analysis and a voxel-by-voxel evaluation. RESULTS: When all areas of the aneurysm were evaluated, there was a modest correlation between the SUV on PET-CT and the change in R2* on USPIO-enhanced MRI (n = 70,345 voxels; r = .30; p < .0001). Although regions of increased (18)F-FDG and USPIO uptake co-localised on occasion, this was infrequent (kappa statistic 0.074; 95% CI 0.026-0.122). (18)F-FDG activity was commonly focused in the shoulder region whereas USPIO uptake was more apparent in the main body of the aneurysm. Maximum SUV was lower in patients with mural USPIO uptake. CONCLUSIONS: Both (18)F-FDG PET-CT and USPIO-MRI uptake identify vascular inflammation associated with AAA. Although they demonstrate a modest correlation, there are distinct differences in the pattern and distribution of uptake, suggesting a differential detection of macrophage glycolytic and phagocytic activity respectively.


Assuntos
Aorta Abdominal/diagnóstico por imagem , Aorta Abdominal/patologia , Aneurisma da Aorta Abdominal/diagnóstico , Aortite/diagnóstico , Imageamento por Ressonância Magnética , Tomografia por Emissão de Pósitrons , Idoso , Aneurisma da Aorta Abdominal/diagnóstico por imagem , Aneurisma da Aorta Abdominal/patologia , Aortite/diagnóstico por imagem , Aortite/patologia , Aortografia/métodos , Meios de Contraste , Dextranos , Feminino , Fluordesoxiglucose F18 , Glicólise , Humanos , Macrófagos/diagnóstico por imagem , Macrófagos/patologia , Nanopartículas de Magnetita , Masculino , Imagem Multimodal , Fagocitose , Valor Preditivo dos Testes , Compostos Radiofarmacêuticos , Tomografia Computadorizada por Raios X
10.
Clin Exp Dermatol ; 41(7): 806-10, 2016 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-27480070

RESUMO

BACKGROUND: Recently, a new population of IL-17-producing CD4 T helper (Th) cells, named Th17, was identified and shown to be involved in various inflammatory and autoimmune diseases, including psoriasis. AIM: To determine the frequency of Th17 cells and related cytokines in peripheral blood of patients with psoriasis, and to analyse their association with disease severity. METHODS: This was a prospective study comprising 34 patients with psoriasis and 24 healthy controls. Clinicoepidemiological details of patients were recorded, and severity of psoriasis was assessed by means of the Psoriasis Area and Severity Index. Circulating Th1 and Th17 cells in untreated patients with psoriasis and healthy controls were quantified by flow cytometry. In sera collected from patients with psoriasis and healthy controls, concentrations of IL-17A and IL-23 were examined by ELISA. RESULTS: Increased frequencies of CD4+ IL-17A+ T cells were seen in peripheral blood of patients with psoriasis vulgaris (P < 0.001). Although serum IL-17A and IL-23 concentrations were higher in patients with psoriasis than in controls, the results did not reach statistical significance. We could not find any correlation between the studied T cells or related cytokines and the disease severity. CONCLUSION: Increased serum levels of circulating Th17 cells and related cytokines may contribute to the cutaneous pathology of psoriasis, as well as the inflammatory process that is a hallmark of psoriasis.


Assuntos
Citocinas/sangue , Psoríase/sangue , Células Th17 , Adulto , Estudos de Casos e Controles , Feminino , Humanos , Índia , Interleucina-17/sangue , Interleucina-23/sangue , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Índice de Gravidade de Doença , Células Th1 , Adulto Jovem
11.
J Public Health (Oxf) ; 38(3): 534-542, 2016 09.
Artigo em Inglês | MEDLINE | ID: mdl-26315996

RESUMO

BACKGROUND: The NHS Health Check Programme was introduced in 2009 to improve primary prevention of coronary heart disease, stroke, diabetes and chronic kidney disease; however, there has been debate regarding the impact. We present a retrospective evaluation of Leicester City Clinical Commissioning Group. METHODS: Data are reported on diagnosis of type 2 diabetes, hypertension, chronic kidney disease, high risk of type 2 diabetes and high risk of cardiovascular disease. Data on management following the Health Check are also reported. RESULTS: Over a 5-year period, 53 799 health checks were performed, 16 388 (30%) people were diagnosed with at least one condition when diagnosis of being at high risk of cardiovascular disease was defined as ≥20%. This figure increased to 43% when diagnosis of high cardiovascular risk ≥10% was included. Of the 3063 (5.7%) individuals diagnosed with type 2 diabetes, 54% were prescribed metformin and 26% were referred for structured education. Of the 5797 (10.8%) individuals diagnosed at high risk of cardiovascular disease (≥20%), 64% were prescribed statins. CONCLUSIONS: A high proportion of new cases of people at risk of cardiovascular disease were identified by the NHS Health Check Programme. Data suggest that this has translated into appropriate preventative measures.


Assuntos
Prevenção Primária/métodos , Adulto , Idoso , Doenças Cardiovasculares/epidemiologia , Doenças Cardiovasculares/prevenção & controle , Diabetes Mellitus Tipo 2/epidemiologia , Diabetes Mellitus Tipo 2/prevenção & controle , Inglaterra/epidemiologia , Feminino , Humanos , Hipertensão/epidemiologia , Hipertensão/prevenção & controle , Masculino , Pessoa de Meia-Idade , Prevenção Primária/organização & administração , Avaliação de Programas e Projetos de Saúde , Insuficiência Renal Crônica/epidemiologia , Insuficiência Renal Crônica/prevenção & controle , Estudos Retrospectivos , Fatores de Risco , Medicina Estatal
12.
Hum Reprod ; 30(12): 2881-91, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26370665

RESUMO

STUDY QUESTION: Are microRNAs (miRs) altered in the eutopic endometrium (EuE) of baboons following the induction of endometriosis? SUMMARY ANSWER: Induction of endometriosis causes significant changes in the expression of eight miRs, including miR-451, in the baboon endometrium as early as 3 months following induction of the disease. WHAT IS KNOWN ALREADY: Endometriosis is one of the most common gynecological disorders and causes chronic pelvic pain and infertility in women of reproductive age. Altered expression of miRs has been reported in women and has been suggested to play an important role in the pathophysiology of several gynecological disorders including endometriosis. STUDY DESIGN, SIZE, DURATION: EuE was obtained from the same group of baboons before and 3 months after the induction of endometriosis. The altered expression of miR-451 was validated in the eutopic and ectopic endometrium of additional baboons between 3 and 15 months following disease induction. Timed endometrial biopsies from women with and without endometriosis were also used to validate the expression of miR-451. PARTICIPANTS/MATERIALS, SETTING, METHODS: Total RNA was extracted from EuE samples before and after the induction of endometriosis, and miRNA expression was analyzed using a 8 × 15 K miR microarray. Microarray signal data were preprocessed by AgiMiRna software, and an empirical Bayes model was used to estimate the changes. The present study focused on quantitative RT-PCR validation of the microarray data, specifically on miR-451 and its target genes in both baboons (n = 3) and women [control (n = 7) and endometriosis (n = 19)]. Descriptive and correlative analysis of miR-451 and target gene expression was conducted using in situ hybridization and immunohistochemistry, while functional analysis utilized an in vitro 3' untranslated region (UTR) luciferase assay and overexpression of miR-451 in human endometrial and endometriotic cell lines. MAIN RESULTS AND THE ROLE OF CHANCE: Induction of endometriosis results in the altered expression of miR-451, -141, -29c, -21, -424, -19b, -200a and -181a in the baboon endometrium. In the baboon, induction of endometriosis significantly decreased the expression of miR-451 at 3 months (P < 0.001), which was also associated with increased expression of its target gene YWHAZ (14.3.3ζ). A similar significant (P < 0.0001) decrease in miR-451 expression was observed in women with endometriosis. The 3' UTR luciferase assay confirmed the regulation of YWHAZ expression by miR-451. Furthermore, overexpression of miR-451 in 12Z cells (immortalized human endometriotic epithelial cell line) led to the decreased expression of its target YWHAZ and this was correlated with decreased cell proliferation. LIMITATIONS, REASONS FOR CAUTION: The study focused only on miR-451 and one of its targets, namely YWHAZ. A single miR could target number of genes and a single gene could also be regulated by number of miRs; hence, it is possible that other miRs and their regulated genes may contribute to the pathophysiology of endometriosis. WIDER IMPLICATIONS OF THE FINDINGS: Our data suggest that the presence of ectopic lesions in baboon causes changes in EuE miR expression as early as 3 months postinduction of the disease, and some of these changes may persist throughout the course of the disease. We propose that the marked down-regulation of miR-451 in both baboons and women with endometriosis increases the expression of multiple target genes. Increased expression of one of the target genes, YWHAZ, increases proliferation, likely contributing to the pathophysiology of the disease.


Assuntos
Endometriose/metabolismo , Endométrio/metabolismo , Regulação da Expressão Gênica , MicroRNAs/metabolismo , Adulto , Animais , Proliferação de Células , Endometriose/genética , Endometriose/patologia , Endométrio/patologia , Feminino , Humanos , MicroRNAs/genética , Papio anubis
13.
Org Biomol Chem ; 12(40): 7942-56, 2014 Oct 28.
Artigo em Inglês | MEDLINE | ID: mdl-24986430

RESUMO

A three step protocol for protein S-nitrosothiol conversion to fluorescent mixed disulfides with purified proteins, referred to as the thiosulfonate switch, is explored which involves: (1) thiol blocking at pH 4.0 using S-phenylsulfonylcysteine (SPSC); (2) trapping of protein S-nitrosothiols as their S-phenylsulfonylcysteines employing sodium benzenesulfinate; and (3) tagging the protein thiosulfonate with a fluorescent rhodamine based probe bearing a reactive thiol (Rhod-SH), which forms a mixed disulfide between the probe and the formerly S-nitrosated cysteine residue. S-Nitrosated bovine serum albumin and the S-nitrosated C-terminally truncated form of AdhR-SH (alcohol dehydrogenase regulator) designated as AdhR*-SNO were selectively labelled by the thiosulfonate switch both individually and in protein mixtures containing free thiols. This protocol features the facile reaction of thiols with S-phenylsulfonylcysteines forming mixed disulfides at mild acidic pH (pH = 4.0) in both the initial blocking step as well as in the conversion of protein-S-sulfonylcysteines to form stable fluorescent disulfides. Labelling was monitored by TOF-MS and gel electrophoresis. Proteolysis and peptide analysis of the resulting digest identified the cysteine residues containing mixed disulfides bearing the fluorescent probe, Rhod-SH.


Assuntos
Álcool Desidrogenase/química , Cisteína/análogos & derivados , Cisteína/farmacologia , Dissulfetos/química , Dissulfetos/farmacologia , Soroalbumina Bovina/química , Compostos de Sulfidrila/antagonistas & inibidores , Compostos de Sulfidrila/análise , Álcool Desidrogenase/metabolismo , Animais , Bovinos , Cisteína/química , Concentração de Íons de Hidrogênio , Modelos Moleculares , Estrutura Molecular
14.
Int J Immunogenet ; 41(3): 242-9, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24164868

RESUMO

In an earlier study, the genotypes associated with higher level of transforming growth factor-ß1 (TGF-ß1) were found to reduce the risk for breast cancer in western Indian women. This observation implied that gene polymorphisms affecting the levels of pro- and anti-inflammatory cytokines may influence the risk for breast cancer in this population. Hence, we performed genotyping for three more functional single-nucleotide polymorphisms (SNPs) responsible for variations in the levels of cytokines associated with inflammation. To that effect, polymorphisms in genes coding for IL-4 (IL-4 C-590T; rs2243250), IFN-γ (IFN-G A + 874T; rs2430561) and MCP-1 (MCP-1 A-2578G; rs1024611) were examined in premenopausal, healthy women (N = 239) and patients with breast cancer (N = 182) from western India. In carriers of the IL-4*590T allele, a reduced risk for the disease (dominant model; OR = 0.61, 95% CI 0.37-0.98) was seen similar to that seen in TGF-B1*10C carriers. An opposite trend was observed with respect to the alleles associated with higher expression of MCP-1 or IFN-γ. In individuals positive for three or more alleles associated with higher levels of either pro- or anti-inflammatory cytokines, an additive effect on the modulation of risk for the disease was evident (for TGF-B1 & IL-4, OR = 0.33, 95% CI 0.12-0.87; for IFN-G & MCP-1, OR = 2.29, 95% CI 0.95-5.51). In the context of contrasting observations in other populations, these results indicate a significant contribution of anti-inflammatory genotypes in the modulation of risk for breast cancer in western Indian women.


Assuntos
Neoplasias da Mama/genética , Quimiocina CCL2/genética , Interferon gama/genética , Interleucina-4/genética , Fator de Crescimento Transformador beta1/genética , Adulto , Alelos , Neoplasias da Mama/imunologia , Neoplasias da Mama/patologia , Estudos de Casos e Controles , Quimiocina CCL2/imunologia , Feminino , Expressão Gênica , Frequência do Gene , Genótipo , Humanos , Índia , Interferon gama/imunologia , Interleucina-4/imunologia , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Projetos Piloto , Polimorfismo de Nucleotídeo Único , Pré-Menopausa , Fatores de Risco , Fator de Crescimento Transformador beta1/imunologia
15.
Eur Heart J ; 34(21): 1567-74, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23391586

RESUMO

AIMS: The pathophysiology of aortic stenosis shares many similarities with atherosclerosis and skeletal bone formation. Using non-invasive imaging, we compared aortic valve calcification and inflammation activity with that measured in atherosclerosis and bone. METHODS AND RESULTS: Positron emission and computed tomography was performed using 18F-sodium fluoride (18F-NaF, calcification) and 18F-fluorodeoxyglucose (18F-FDG, inflammation) in 101 patients with calcific aortic valve disease (81 aortic stenosis and 20 aortic sclerosis). Calcium scores and positron emission tomography tracer activity (tissue-to-background ratio; TBR) were measured in the aortic valve, coronary arteries, thoracic aorta, and bone. Over 90% of the cohort had coexistent calcific atheroma, yet correlations between calcium scores were weak or absent (valve vs. aorta r(2) = 0.015, P = 0.222; valve vs. coronaries r(2) = 0.039, P = 0.049) as were associations between calcium scores and bone mineral density (BMD vs. valve r(2) = 0.000, P = 0.766; vs. aorta r(2) = 0.052, P = 0.025; vs. coronaries r(2) = 0.016, P = 0.210). 18F-NaF activity in the valve was 28% higher than in the aorta (TBR: 2.66 ± 0.84 vs. 2.11 ± 0.31, respectively, P < 0.001) and correlated more strongly with the severity of aortic stenosis (r(2) = 0.419, P < 0.001) than 18F-NaF activity outwith the valve (valve vs. aorta r(2) = 0.167, P < 0.001; valve vs. coronary arteries r(2) = 0.174, P < 0.001; valve vs. bone r(2) = 0.001, P = 0.806). In contrast, 18F-FDG activity was lower in the aortic valve than the aortic atheroma (TBR: 1.56 ± 0.21 vs. 1.81 ± 0.24, respectively, P < 0.001) and more closely associated with uptake outwith the valve (valve vs. aorta r(2) = 0.327, P < 0.001). CONCLUSION: In patients with aortic stenosis, disease activity appears to be determined by local calcific processes within the valve that are distinct from atherosclerosis and skeletal bone metabolism.


Assuntos
Estenose da Valva Aórtica/patologia , Valva Aórtica/patologia , Aterosclerose/patologia , Calcinose/patologia , Osteíte/patologia , Vasculite/patologia , Idoso , Valva Aórtica/diagnóstico por imagem , Estenose da Valva Aórtica/diagnóstico por imagem , Aterosclerose/diagnóstico por imagem , Densidade Óssea , Calcinose/diagnóstico por imagem , Feminino , Fluordesoxiglucose F18 , Humanos , Masculino , Osteíte/diagnóstico por imagem , Tomografia por Emissão de Pósitrons , Compostos Radiofarmacêuticos , Fluoreto de Sódio , Tomografia Computadorizada por Raios X , Vasculite/diagnóstico por imagem
16.
Rev Clin Esp (Barc) ; 224(6): 387-392, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38679321

RESUMO

INTRODUCTION: Physical activity (PA) is associated with positive health outcomes such as prevention of chronic diseases, psychological well-being and improved work performance. Medical residents are subjected to sleep deprivation, extended work schedule and high burnout prevalence. These conditions may lead to the neglect of personal health and the restriction of time dedicated to PA. The objective of the present study was to analyze the time dedicated to PA of medical residents, comparing women vs men residents and surgical vs clinical residents. METHODS: It is a cross-sectional study performed in a Spanish third-level university hospital. All medical residents from our institution were invited to voluntarily participate in the study answering a web-based questionnaire on June 2022. Data regarding demographics, residency and PA practice was recorded. RESULTS: The response rate was 20.73% (114/550). The 32.5% of the residents considered themselves to be physically inactive and mean time dedicated to PA in a regular week was 3.62 ±â€¯2.22 h. Men residents dedicated more time to PA than women residents (4.23 ±â€¯2.42 h vs 3.14 ±â€¯1.95 h, p = 0.012) and surgical residents dedicated more time than clinical residents (4.33 ±â€¯2.36 h vs 3.23 ±â€¯2.05 h, p = 0.01). CONCLUSIONS: One third of the medical residents consider themself physically inactive. Women and clinical residents practice PA less time than men and surgical residents. Efforts should be made to encourage PA among residents, especially in women and non-surgeons.


Assuntos
Exercício Físico , Internato e Residência , Humanos , Masculino , Feminino , Estudos Transversais , Adulto , Fatores Sexuais , Fatores de Tempo , Espanha , Inquéritos e Questionários
17.
bioRxiv ; 2023 Jan 10.
Artigo em Inglês | MEDLINE | ID: mdl-36711660

RESUMO

Maximizing protein secretion is an important target in the design of engineered living systems. In this paper, we characterize a tradeoff between cell growth and per cell protein secretion in the curli biofilm secretion system of E Coli Nissile 1917. Initial characterization using 24-hour continuous growth and protein production monitoring confirms decreased growth rates at high induction leading to a local maximum in total protein production at intermediate induction. Propidium iodide staining at the endpoint indicates that cellular death is a dominant cause of growth reduction. Assaying variants with combinatorial constructs of inner and outer membrane secretion tags, we find that diminished growth at high production is specific to secretory variants associated with accumulation of protein containing the outer membrane transport tag in the periplasmic space. RNA sequencing experiments indicate upregulation of known periplasmic stress response genes in the highly secreting variant, further implicating periplasmic stress in the growth-secretion tradeoff. Overall, these results motivate additional strategies for optimizing total protein production and longevity of secretory engineered living systems.

18.
Rev Esp Cir Ortop Traumatol ; 66(2): T149-T153, 2022.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-35404801

RESUMO

Complex distal femoral fracture (DFF) in the elderly patient is an infrequent but challenging scenario. In these fragile patients, DFF is associated with a high rate of medical complications and mortality. The optimum treatment remains controversial. Our aim is to propose our standard treatment, describe our results and discuss its clinical relevance. We describe 3cases of elderly and fragile patients with multiple comorbidities who suffered a complex DFF after low energy trauma. They were successfully treated through a primary arthroplasty with distal femoral replacement. All the 3patients presented early full weight-bearing mobilization (average time to first ambulation was 5days), good functional outcome (mean knee range of motion was 103°) and short hospital length of stay (mean of 10days). According to our experience, primary arthroplasty with distal femoral replacement could be a good therapeutic option for complex DFF in elderly patients.

19.
Rev Esp Cir Ortop Traumatol ; 66(2): 149-153, 2022.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-35404793

RESUMO

Complex distal femoral fracture (DFF) in the elderly patient is an infrequent but challenging scenario. In these fragile patients, DFF is associated with a high rate of medical complications and mortality. The optimum treatment remains controversial. Our aim is to propose our standard treatment, describe our results and discuss its clinical relevance. We describe three cases of elderly and fragile patients with multiple comorbidities who suffered a complex DFF after low energy trauma. They were successfully treated through a primary arthroplasty with distal femoral replacement (DFR). All the three patients presented early full weight-bearing mobilization (average time to first ambulation was five days), good functional outcome (mean knee range of motion was 103°) and short hospital length of stay (mean of ten days). According to our experience, primary arthroplasty with DFR could be a good therapeutic option for complex DFF in elderly patients.

20.
Phys Rev Lett ; 106(23): 231803, 2011 Jun 10.
Artigo em Inglês | MEDLINE | ID: mdl-21770499

RESUMO

The suppressed decay chain B(-)→DK(-), D→K(+)π(-), where D indicates a D(¯)(0) or D(0) state, provides important information on the CP-violating angle ϕ(3). We measure the ratio R(DK) of the decay rates to the favored mode B(-)→DK(-), D→K(-)π(+) to be R(DK)=[1.63(-0.41)(+0.44)(stat)(-0.13)(+0.07)(syst)]×10(-2), which indicates the first evidence of the signal with a significance of 4.1σ. We also measure the asymmetry A(DK) between the charge-conjugate decays to be A(DK)=-0.39(-0.28)(+0.26)(stat)(-0.03)(+0.04)(syst). The results are based on the full 772×10(6) BB(¯) pair data sample collected at the Υ(4S) resonance with the Belle detector.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA