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1.
Artigo em Inglês | MEDLINE | ID: mdl-38520619

RESUMO

PURPOSE: To examine the parenthood desire, perceived parenthood stigma, and barriers to achieving parenthood among sexual minority men (SMM) in Canada, and to investigate factors influencing their fertility and assisted reproductive knowledge. METHODS: Data were collected from March to mid-June 2023 using a 78-item anonymous online survey. Childless cisgender SMM (age 18+) living in Canada were recruited from the LGBTQIA+ community outside the fertility care networks. Chi-square, t-tests, ANOVA, reliability tests, Spearman's correlation, and hierarchical regression model were used for analysis. RESULTS: Over 160 people clicked the survey hyperlink during the study period and 112 completed surveys were analyzed. The mean age of participants was 33.2±8.5 (range: 19.7-60.0). Having a child by any means was "quite"/"very" important to 35.7% (n=40), yet 56.0% (n=61) thought it was "unlikely" to achieve parenthood. Financial readiness (n=90, 85.7%) and relationship stability (n=86, 81.9%) were the two most "important" parenthood considerations. Participants who were non-white (p=0.017), under age 30 (p=0.008), and had no siblings (p=0.024) had significantly higher means of parenthood desire compared to others. The final hierarchical regression model explained 43% of the variance in the knowledge scores (R2adj =0.353), predicted by the levels of (i) education (ß=0.37, p<0.001), (ii) family acceptance of sexual orientation (ß=0.39, p=0.004), and (iii) parenthood desire (ß=0.27, p=0.002). CONCLUSIONS: With an increasing number of SMM desiring children, it is pivotal to advance family-building equality through improving their fertility and assisted reproductive knowledge, removing disparities in accessing adoption and assisted reproductive services, and decreasing social stigma against SMM having children.

2.
J Sci Food Agric ; 2024 Jun 10.
Artigo em Inglês | MEDLINE | ID: mdl-38855927

RESUMO

BACKGROUND: The present study aimed to evaluate the anti-hypertensive and anti-diabetic activities from biologically active peptides produced by fermented sheep milk with Lacticaseibacillus paracasei M11 (MG027695), as well as to purify and characterize the angiotensin-converting enzyme (ACE) inhibitory and anti-diabetic peptides produced from fermented sheep milk. RESULTS: After 48 h of fermentation at 37 °C, sheep milk demonstrated significant changes in anti-diabetic effects and ACE-I effects, with inhibition percentages observed for ACE inhibition (76.32%), α-amylase (70.13%), α-glucosidase (70.11%) and lipase inhibition (68.22%). The highest level of peptides (9.77 mg mL-1) was produced by optimizing the growth conditions, which included an inoculation rate of 2.5% and a 48 h of incubation period. The comparison of molecular weight distributions among protein fractions was conducted through sodium dodecyl-sulfate polyacrylamide gel electrophoresis analysis, whereas spots were separated using 2D gel electrophoresis according to both the molecular weight and pH. Peptide characterization with ultra-filtration membranes at 3 and 10 kDa allowed the study to assess molecular weight-based separation. Nitric oxide generated by lipopolysaccharide and the secretion of pro-inflammatory cytokines in RAW 264.7 immune cells were both inhibited by sheep milk fermented with M11. Fourier-transform infrared spectroscopy was employed to assess changes in functional groups after fermentation, providing insights into the structural changes occurring during fermentation. CONCLUSION: The present study demonstrates that fermentation with L. paracasei (M11) led to significant changes in fermented sheep milk, enhancing its bioactive properties, notably in terms of ACE inhibition and anti-diabetic activities, and the generation of peptides with bioactive properties has potential health benefits. © 2024 Society of Chemical Industry.

3.
J Vasc Res ; 60(1): 12-68, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36843014

RESUMO

Research involving human subjects in ambulatory settings is a critical link in the chain comprising translational research, spanning preclinical research to human subject and patient cohort studies. There are presently a wide array of techniques and approaches available to investigators wishing to study blood flow, perfusion, and vascular structure and function in human subjects. In this multi-sectioned review, we discuss capillaroscopy, carotid intima-media thickness, flow-mediated dilation, laser Doppler flowmetry, near-infrared spectroscopy, peripheral arterial tonometry, pulse wave velocity, retinal fundus imaging, and vascular plethysmography. Each section contains a general overview and the physical basis of the technique followed by a discussion of the procedures involved and the necessary equipment, with attention paid to specific requirements or limitations. Subsequently, we detail which aspects of vascular function can be studied with a given technique, the analytical approach to the collected data, and the appropriate application and limitation(s) to the interpretation of the data collected. Finally, a modified scoping review provides a summary of how each assessment technique has been applied in previous studies. It is anticipated that this review will provide an efficient source of information and insight for preclinical investigators seeking to add translational aspects to their research programs.


Assuntos
Espessura Intima-Media Carotídea , Análise de Onda de Pulso , Humanos , Análise de Onda de Pulso/métodos , Pesquisa Translacional Biomédica , Velocidade do Fluxo Sanguíneo/fisiologia , Perfusão
4.
Mol Biol Rep ; 50(6): 4875-4886, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37060520

RESUMO

BACKGROUND: Teak (Tectona grandis L.) is a forest tree having 2n = 2x = 36 diploid chromosomes. Plants are continually subjected to variety of abiotic stresses due to climate change, which alter their physiological processes and gene expression. METHODS AND RESULTS: The current study sought to examine the physiological and differential gene expression of teak seedlings exposed to abiotic stresses (150 mM NaCl and 15% PEG-6000). Chlorophyll content, membrane stability index and relative water content were measured at 0, 2, 7 and 12 days after treatment. These parameters were initially numerically reduced, but they were significantly reduced during a longer period of treatment. Seedlings treated with 150 mM NaCl displayed more harmful effect on the plant than other treatments. The results showed that variety of stresses significantly affect the physiology of seedlings because they cause membrane damage, ROS generation, chlorophyll degradation, and reduction in water absorption. The gene expression of treated and control seedlings was also evaluated at 12 days after treatment. Ten stress-related genes were examined for their differential expression using RT-PCR under applied stress. The stress-treated seedlings' leaves showed an up-regulated expression of the genes MYB-3, HSP-1, BI-1 and CS-2. CONCLUSION: Up-regulation of the genes confirmed the protective function of these genes in plants under abiotic stress. However, gene expression was affected by treatments, the extent of stress and the species of plant. This study came to the conclusion that physiological parameters could be utilized as marker indices to assess a tree's capability to withstand stress at seedling stage. The up-regulated genes will be further investigated and utilized to validate stress tolerance and susceptible teak seedlings.


Assuntos
Plântula , Cloreto de Sódio , Plântula/metabolismo , Cloreto de Sódio/metabolismo , Estresse Fisiológico/genética , Clorofila/metabolismo , Cloreto de Sódio na Dieta , Água/metabolismo , Expressão Gênica
5.
J Indian Assoc Pediatr Surg ; 28(5): 425-427, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37842211

RESUMO

Micturating cystourethrography (MCUG) is a very commonly performed diagnostic procedure in pediatric urology. Although considered to be simple, safe, and cost-effective, it can incur some complications. Bladder rupture during MCUG is a very rare complication and only a handful of cases have been reported in world literature. We report the case of a 2.5-month-old boy who had intraperitoneal bladder rupture during an MCUG needing surgical repair. At operation, the child had a bladder tear at the dome of the bladder which was repaired successfully. The postoperative recovery was uneventful and the child is doing well in follow-up. Although individual management of bladder rupture may differ, a majority of infants need surgery for the same. Thorough vigil and attention to the technique are a must to prevent such incidents in children.

6.
Diabet Med ; 37(4): 593-601, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-32012347

RESUMO

In 2008, the US Food and Drug Administration provided guidance for the evaluation of the cardiovascular safety of antidiabetes drugs. The newer antidiabetes drugs, approved after 2008, were therefore evaluated in long-term cardiovascular outcome trials, designed and powered for the assessment of cardiovascular safety. Accordingly, the primary endpoint of these trials was a cardiac composite endpoint. Since 2008, the data from various cardiovascular outcome trials have been reported, including SAVOR-TIMI 53 (saxagliptin), EXAMINE (alogliptin), TECOS (sitagliptin), CARMELINA (linagliptin), CAROLINA (linagliptin), ELIXA (lixisenatide), LEADER (liraglutide), EXSCEL (exenatide once-weekly), SUSTAIN-6 (injectable semaglutide), HARMONY Outcomes (albiglutide), REWIND (dulaglutide), PIONEER-6 (oral semaglutide), EMPA-REG OUTCOME (empagliflozin), the CANVAS Program (canagliflozin) and DECLARE-TIMI 53 (dapagliflozin). Some of these trials subsequently also published data on renal outcomes, although these were secondary or exploratory analyses. Dipeptidyl peptidase-4 inhibitors and glucagon-like peptide-1 receptor agonists had beneficial effects on albuminuria, while sodium-glucose co-transporter-2 inhibitors additionally showed a positive effect on 'hard' renal outcomes. In contrast to the cardiovascular outcome trials, the renal outcome trial of canagliflozin, CREDENCE, assessed a hard renal endpoint as its primary endpoint and showed positive effects on these hard renal outcomes. In this review, we aim to highlight the renal outcome data from the cardiovascular outcome trials and the CREDENCE trial and understand the differences between their results. The post CREDENCE era would appear to reinforce the position of sodium-glucose co-transporter-2 inhibitors as drugs providing cardiorenal protection, in addition to their anti-glycaemic effects.


Assuntos
Diabetes Mellitus/tratamento farmacológico , Drogas em Investigação/uso terapêutico , Hipoglicemiantes/uso terapêutico , Rim/efeitos dos fármacos , Sistema Cardiovascular/efeitos dos fármacos , Sistema Cardiovascular/fisiopatologia , Citoproteção/efeitos dos fármacos , Diabetes Mellitus/epidemiologia , Diabetes Mellitus/fisiopatologia , Angiopatias Diabéticas/epidemiologia , Angiopatias Diabéticas/prevenção & controle , Nefropatias Diabéticas/epidemiologia , Nefropatias Diabéticas/prevenção & controle , Humanos , Hipoglicemiantes/classificação , Rim/fisiologia , Resultado do Tratamento
7.
J Indian Assoc Pediatr Surg ; 25(1): 49-51, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31896901

RESUMO

Generalized lymphangioma of tongue is a rare cause of macroglossia in children. It causes mechanical discomfort and functional and psychological disturbances. We report a case of macroglossia due to generalized lymphangioma in a 10 year old where partial glossectomy was done to achieve symptomatic relief.

8.
J Indian Assoc Pediatr Surg ; 24(4): 285-287, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31571761

RESUMO

Segmental dilatation of the intestine is a rare disease and mostly involves the ileal segment. It commonly presents in the neonatal period and early infancy with symptoms of partial or total obstruction. We report a rare case of an isolated jejunal segmental dilatation in a 7-year-old girl. The child presented with malnutrition and signs of subacute obstruction. The diagnosis was confirmed intraoperatively, and the dilated segment was resected. Although the etiology remains unknown, we discuss its clinical aspects and relevant literature.

9.
J Biol Regul Homeost Agents ; 32(2 Suppl. 1): 11-18, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29460513

RESUMO

SureFil SDR is a flowable resin-based composite that allows a single incremental bulk placement. The marginal seal of SureFil SDR at the gingival margins of class II restorations located apical to the cemento-enamel-junction (CEJ) has not been adequately evaluated compared to those located occlusal to the CEJ. Forty class II cavities were prepared in human molars. The gingival margins of 20 preparations were located 0.5 mm occlusal to the CEJ, and the other 20 preparations were located 0.5 mm apical to the CEJ. The cavities surfaces were bonded with XenoV dental adhesive and filled with SDR in one bulk increment up to 4 mm, after which they were covered with CeramX. The teeth were subjected to thermo-and load-cycling, and their gingival margins were exposed to 0.5% basic-fuchsin solution. The specimens were sectioned mesio-distally and scored for microleakage. A Wilcoxon test for pairwise comparison was performed to determine significance. Dye penetration was observed in 30% of the 20 restorations with cavo-surface margins located occlusal to the CEJ and in 55% of the 20 restorations with cavo-surface margins located apical to the CEJ. The bulk-fill flowable resin base SureFil SDR with XenoV dental adhesive provided a better marginal seal in class II restorations with gingival margins above the CEJ compared to restorations with gingival margins below the CEJ. SDR should not be recommended for class II cavity preparations with gingival margins located below the CEJ.


Assuntos
Resinas Compostas , Preparo da Cavidade Dentária , Restauração Dentária Permanente , Gengiva/anatomia & histologia , Humanos , Colo do Dente/anatomia & histologia
10.
Epilepsy Behav ; 87: 32-38, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-30170260

RESUMO

OBJECTIVES: The omega-3 (n-3) fatty acids, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), are known to play an important role in maintenance and modulation of neuronal functions. There is evidence that omega-3 fatty acids may have anticonvulsant effects. The effect of DHA and EPA on seizure rate in patients with drug-resistant epilepsy (DRE) was investigated. METHODS: A double-blind, randomized, placebo-controlled clinical trial included ninety-nine (n = 99) subjects with DRE, aged 5-16 years (n = 85) and 17-45 years (n = 14). After randomization, subjects were given two, four, or six capsules per day of DHA (417.8 mg DHA and 50.8 mg EPA/capsule, n = 33), EPA (385.6 mg EPA and 81.2 mg DHA/capsule, n = 33), or placebo (high oleic acid sunflower oil, n = 33) for one year. The primary endpoint was the effect of treatment on rate of seizure. Random-effects negative binomial regression models were fitted to model the patients' total count of seizures per month. The treatment effects on seizure incidence rate ratio (IRR) were tested after controlling for the covariate effects of gender, age, rate of seizure per week at enrollment, type of seizure, and number of antiepileptic drug (AED) combinations used at enrollment. RESULTS: Fifty-nine subjects (n = 59) completed the study (59.6%). The average number of seizures per month were 9.7 ±â€¯1.2 in the EPA group, 11.7 ±â€¯1.5 in the DHA group, and 16.6 ±â€¯1.5 in the placebo group. Age, gender, and seizure-type adjusted seizure IRRs of the EPA and DHA groups compared with the placebo group were 0.61 (CI = 0.42-0.88, p = 0.008, 42% reduction) and 0.67 (CI = 0.46-1.0, p = 0.04, 39% reduction), respectively. There was no difference in IRR between the EPA and DHA groups (p = 0.56). Both treatment groups had a significantly higher number of seizure-free days compared with the placebo group (p < 0.05). SIGNIFICANCE: This study demonstrates that EPA and DHA are effective in reducing seizure frequency in patients with DRE.


Assuntos
Anticonvulsivantes/farmacologia , Suplementos Nutricionais , Ácidos Docosa-Hexaenoicos/farmacologia , Epilepsia Resistente a Medicamentos/tratamento farmacológico , Ácido Eicosapentaenoico/farmacologia , Avaliação de Resultados em Cuidados de Saúde , Adolescente , Adulto , Anticonvulsivantes/administração & dosagem , Criança , Pré-Escolar , Ácidos Docosa-Hexaenoicos/administração & dosagem , Método Duplo-Cego , Combinação de Medicamentos , Ácido Eicosapentaenoico/administração & dosagem , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem
11.
J Antimicrob Chemother ; 72(10): 2715-2721, 2017 10 01.
Artigo em Inglês | MEDLINE | ID: mdl-29091215

RESUMO

Background: Colistin is the last drug option for the treatment of MDR Gram-negative bacterial infections. Several types of resistance to colistin have been identified, including hetero-resistance, which has been observed in several Gram-negative pathogens. During a routine surveillance project on antimicrobial resistance, we found abnormal colistin-resistant Enterobacter asburiae and Enterobacter cloacae isolates. E. cloacae is an intestinal commensal bacterium and a well-known opportunistic nosocomial pathogen. Objectives: To characterize the molecular mechanism of colistin hetero-resistance in Enterobacter spp. Methods: Several approaches (WGS, transposome mutagenesis and RT-PCR analysis) were used to discover the molecular mechanism of colistin hetero-resistance. Results: Genomic analysis of mutant clones generated by transposome mutagenesis suggests that hetero-resistance is linked with overexpression of the acrAB-tolC efflux pump. Transcriptional analysis further found that naturally elevated soxRS triggers the induction of the acrAB-tolC efflux pump proteins followed by the development of colistin hetero-resistance in E. asburiae and E. cloacae. Transcriptional analysis results were further verified as demonstrating the development of hetero-resistance in colistin-susceptible strains by plasmid-based overexpression of soxRS. Conclusions: Our observations highlight the importance of such findings, which previously were only superficially described because of the challenges associated with their detection, in the context of common modes of colistin resistance in Gram-negative bacteria. This study constitutes a unique demonstration of efflux-based high-level colistin hetero-resistance, controlled by a soxRS regulator in Gram-negative bacteria.


Assuntos
Proteínas de Bactérias/genética , Proteínas de Bactérias/metabolismo , Proteínas de Transporte/genética , Colistina/farmacologia , Farmacorresistência Bacteriana/genética , Enterobacter cloacae/efeitos dos fármacos , Enterobacter/efeitos dos fármacos , Regulação Bacteriana da Expressão Gênica , Fatores de Transcrição/genética , Fatores de Transcrição/metabolismo , Antibacterianos/farmacologia , Proteínas de Transporte/metabolismo , Elementos de DNA Transponíveis , Enterobacter/genética , Enterobacter/isolamento & purificação , Enterobacter cloacae/genética , Enterobacter cloacae/isolamento & purificação , Infecções por Enterobacteriaceae/microbiologia , Humanos , Testes de Sensibilidade Microbiana , Mutagênese Insercional
12.
Kathmandu Univ Med J (KUMJ) ; 15(60): 332-335, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-30580352

RESUMO

Background The presence of microbial pathogen in the urinary tract is Urinary Tract Infection (UTI). In BP Koirala Institute of Health Sciences (BPKIHS), each year there are around 1000 cases of UTIs. Antibiotic is empirically started after sending culture/sensitivity (c/s) with intention to change antibiotic if c/s demands. Objective To see the antimicrobial prescribing pattern and c/s pattern of UTI inpatients of BPKIHS together with their socio-demographic and laboratory profile. Method It was a Record-Based Retrospective Descriptive Study of past one-year. All available inpatient-records from Medical-Record Section were extensively searched for the keyword "UTI" diagnosis. The relevant data were entered in Microsoft Excel-sheet and analyzed with IBM SPSS 21. Ethical clearance was obtained from the IRC before study. Result There were 86 cases from four different wards. There was slight female preponderance (51.16%). Fifty-five (63.95%) cases were complicated. Fever (75.51%) was the most common symptom. Only 20% were tachycardic but 90% were tachypnic. Leucocytosis (59.26%), urine albumin within 30-100 mg/dl (33.85%) and >5 Urine WBC/hpf (80.26%) were seen. Ceftiaxone (53.16%) was the most commonly prescribed empirical antibiotic, followed by Cefixime (6.32%). Fourteen (16.27%) cases were culture positive. E. coli was the most (78.57%) common pathogen grown. In culture sensitivity study, Amikacin (42.85%) was the most sensitive antibiotic. Conclusion Eighty-six UTI inpatients were identified last year. Fever and Tachypnoea were very common. Leucocytosis, 1+ proteinuria and urine WBC>5/hpf were frequently seen. Ceftriaxone was the most common antibiotic prescribed. E. coli was the most common pathogen grown and Amikacin was the most sensitive antibiotic.


Assuntos
Antibacterianos/uso terapêutico , Infecções Urinárias/microbiologia , Amicacina/uso terapêutico , Técnicas de Tipagem Bacteriana , Ceftriaxona/uso terapêutico , Escherichia coli/efeitos dos fármacos , Feminino , Febre , Humanos , Masculino , Testes de Sensibilidade Microbiana , Nepal , Estudos Retrospectivos , Taquicardia , Centros de Atenção Terciária , Infecções Urinárias/tratamento farmacológico , Infecções Urinárias/patologia , Infecções Urinárias/urina
13.
Osteoporos Int ; 27(3): 989-1001, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26496739

RESUMO

SUMMARY: Hyponatremia has been linked to an increased risk of osteoporosis and fractures. We found an increased hazard ratio of major osteoporotic fractures adjusted for potential confounders, including osteoporosis and medication. A reduced BMD was not sufficiently explaining the association. Our data indicate that hyponatremia should be considered a risk factor for osteoporosis and fractures. INTRODUCTION: Hyponatremia is the most common electrolyte disorder in clinical practice and could be a risk factor for both osteoporosis and fractures. Mild hyponatremia has traditionally been regarded as a benign and asymptomatic condition; however, data from large population and animal studies have led to a reappraisal of this view. The purpose of this study was to evaluate the association of hyponatremia with osteoporosis and major osteoporotic fractures (MOF) in women. METHODS: This is a historical cohort study with fracture follow-up. The study consisted of 5610 patients with available serum sodium and a bone density measurement. Information on potential risk factor was obtained through a questionnaire. Additional information on medication, comorbidities, and fractures was obtained through national registries. RESULTS: Hyponatremia was associated with significant lower T-scores at total hip and a borderline significant lower T-score at femoral neck in the multivariate analysis. No association was found between hyponatremia and the lumbar spine T-score. Hyponatremia was associated with an increased hazard ratio of sustaining a MOF in the period from 6 months prior to 12 months after serum sodium measurement. Finally, data showed a relationship with increasing serum sodium and an increasing T-score estimate and a decreasing hazard ratio of MOF. CONCLUSIONS: Our data suggest that hyponatremia in women increases the risk of osteoporosis and MOF. The increased risk of MOF was independent of osteoporosis.


Assuntos
Hiponatremia/complicações , Osteoporose Pós-Menopausa/etiologia , Fraturas por Osteoporose/etiologia , Idoso , Densidade Óssea/fisiologia , Estudos de Coortes , Dinamarca/epidemiologia , Feminino , Colo do Fêmur/fisiopatologia , Articulação do Quadril/fisiopatologia , Humanos , Hiponatremia/epidemiologia , Hiponatremia/fisiopatologia , Vértebras Lombares/fisiopatologia , Pessoa de Meia-Idade , Osteoporose Pós-Menopausa/epidemiologia , Osteoporose Pós-Menopausa/fisiopatologia , Fraturas por Osteoporose/epidemiologia , Fraturas por Osteoporose/fisiopatologia , Fatores de Risco
14.
Andrologia ; 48(5): 509-17, 2016 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-26260161

RESUMO

NR5A1 plays a central role in gonadal development and regulation by transcriptional regulation of key modulators involved in steroidogenesis. Mutations in human NR5A1 are frequently associated with 46,XY disorders of sex development (DSD). We analysed a Pakistani cohort of patients with 46,XY DSD, presenting with variable degrees of gonadal dysgenesis, for NR5A1 mutations. The study identified three mutations (p.Tyr03X, p.Glu07X and p.Gln299HisfsX386), of which two are novel, in these patients with 46,XY DSD. The mutations, p.Tyr03X and novel p.Glu07X, are located in the coding region of the gene, corresponding to DNA-binding domain of the predicted protein. In silico analysis for the novel homozygous p.Gln299HisfsX386 mutation in ligand-binding domain of NR5A1 revealed subtle changes in overall tertiary conformation which is predicted to affect the normal physiology of this mutant protein. This study reveals two novel mutations with altered NR5A1 protein in twenty patients with 46,XY DSD, highlighting the critical role of NR5A1 protein in gonadal development and differentiation. In conclusion, the current and previous studies suggest that the NR5A1 mutations are present in around 8-15% of patients with 46,XY DSD presenting with gonadal dysgenesis. For the clinical utility of NR5A1 gene mutations, more comprehensive studies with large 46,XY DSD patient series in different populations are suggested.


Assuntos
Transtorno 46,XY do Desenvolvimento Sexual/genética , Mutação , Fator Esteroidogênico 1/genética , Adolescente , Códon sem Sentido , Estudos de Coortes , Consanguinidade , Análise Mutacional de DNA , Mutação da Fase de Leitura , Disgenesia Gonadal 46 XY/genética , Heterozigoto , Humanos , Masculino , Modelos Moleculares , Proteínas Mutantes/química , Proteínas Mutantes/genética , Paquistão , Polimorfismo de Nucleotídeo Único , Domínios Proteicos , Fator Esteroidogênico 1/química
15.
J Hand Surg Am ; 41(3): 387-93, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26794124

RESUMO

PURPOSE: To assess ulnocarpal joint stability after treatment of a peripheral triangular fibrocartilage complex (TFCC) injury with all-inside arthroscopic suture repair (SR), extensor retinaculum capsulorrhaphy with the Herbert sling (HS), and a combination of both (SR+HS). METHODS: Twelve fresh-frozen, age-matched, upper-extremity specimens intact from the distal humerus were prepared. Nondestructive mechanical testing was performed to assess native ulnocarpal joint stability and load-displacement curves were recorded. A peripheral, ulnar-sided TFCC injury was created with arthroscopic assistance, and mechanical testing was performed. Each specimen was treated with SR or HS and testing was repeated. The 6 specimens treated with SR were then treated with HS (SR+HS), and testing was repeated. We used paired Student t tests for statistical analysis within cohorts. RESULTS: For all cohorts, there was an average increase in ulnar translation after the creation of a peripheral TFCC injury and an average decrease after repair. Herbert sling decreased translation by 21%, SR decreased translation by 12%, and SR+HS decreased translation by 26%. CONCLUSIONS: Suture repair plus HS and HS reduce ulnar translation the most after a peripheral TFCC injury, followed by SR alone. CLINICAL RELEVANCE: Ulnocarpal joint stability should be assessed clinically in patients with peripheral TFCC injury, and consideration should be made for using extensor capsulorrhaphy in isolation or as an adjunct to SR as a treatment option.


Assuntos
Artroscopia/métodos , Instabilidade Articular/cirurgia , Fibrocartilagem Triangular/lesões , Fibrocartilagem Triangular/cirurgia , Articulação do Punho/cirurgia , Fenômenos Biomecânicos , Cadáver , Humanos , Instabilidade Articular/fisiopatologia , Técnicas de Sutura , Fibrocartilagem Triangular/fisiopatologia , Articulação do Punho/fisiopatologia
16.
Appl Microbiol Biotechnol ; 99(7): 3041-55, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25301584

RESUMO

The modular auxiliary activity (AA) family of proteins is believed to cause amorphogenesis in addition to oxidative cleavage of crystalline cellulose although the supporting evidence is limited. HcAA10-2 is a modular AA10 family protein (58 kDa) composed of a AA10 module and a family two carbohydrate binding module (CBM2), joined by a long stretch of 222 amino acids of unknown function. The protein was expressed in Escherichia coli and purified to homogeneity. Scanning electron microscopy and X-ray diffraction analysis of Avicel treated with HcAA10-2 provided evidence for the disruption of the cellulose microfibrils ("amorphogenesis") and reduction of the crystallinity index, resulting in a twofold increase of cellulase adsorption on the polysaccharide surface. HcAA10-2 exhibited weak endoglucanase-like activity toward soluble cellulose and cello-oligosaccharides with an optimum at pH 6.5 and 45 °C. HcAA10-2 catalyzed oxidative cleavage of crystalline cellulose released native and oxidized cello-oligosaccharides in the presence of copper and an electron donor such as ascorbic acid. Multiple sequence alignment indicated that His1, His109, and Phe197 in the AA10 module formed the conserved copper-binding site. The reducing sugar released from Avicel by the endoglucanase Cel5 and Celluclast accompanying HcAA10-2 was increased by four- and sixfold, respectively. Moreover, HcAA10-2 and Celluclast acted synergistically on pretreated wheat straw biomass resulting in a threefold increase in reducing sugar than Celluclast alone. Taken together, these results suggest that HcAA10-2 is a novel multifunctional modular AA10 protein possessing amorphogenesis, weak endoglucanase, and oxidative cleavage activities useful for efficient degradation of crystalline cellulose.


Assuntos
Proteínas de Bactérias/metabolismo , Biotecnologia/métodos , Celulose/metabolismo , Gammaproteobacteria/química , Sequência de Aminoácidos , Proteínas de Bactérias/química , Proteínas de Bactérias/genética , Sítios de Ligação , Celulase/química , Celulase/metabolismo , Celulose/química , Clonagem Molecular , Escherichia coli/genética , Gammaproteobacteria/genética , Hidrólise , Metais/metabolismo , Microscopia Eletrônica de Varredura , Dados de Sequência Molecular , Estrutura Terciária de Proteína , Proteínas Recombinantes/genética , Proteínas Recombinantes/isolamento & purificação , Proteínas Recombinantes/metabolismo , Homologia de Sequência de Aminoácidos , Triticum , Difração de Raios X
17.
Malays J Pathol ; 37(2): 95-100, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-26277665

RESUMO

UNLABELLED: Multiple myeloma (MM) is a neoplastic plasma cell dyscrasia with an incidence of 4-4.5 per 100,000 population per year. It is regarded as the second most prevalent blood cancer (10%) after non-Hodgkin lymphoma. The objective of this study was to investigate the mutational change in chromosome 13 (13q14) among Sudanese MM patients and to identify the association between extent of plasma cell infiltration in the bone marrow, albumin level and deletion of 13q14 by an analytical case control study. MATERIALS AND METHODS: 15 patients were enrolled in the study. 11 bone marrow samples were collected from MM patients at different stages of the disease and 4 samples were from patients with conditions other than MM as control. Plasma cells were counted from bone marrow smears and fluorescence-in-situ hybridization (FISH) was performed using Fluorophore labeled DLEU1 (13q14) LSI (local specific identifier) probe designed as a dual-colour assay to detect deletion at 13q14. Heparanized sample was taken for estimation of serum albumin in all patients. RESULTS: 13q14 deletion was detected in 6 (54.5%) MM patients while one (9.1%) patient showed monosomy. All relapsed MM (27.3%) had 13q14 deletion. Surprisingly almost all patients studied had normal albumin level. The study could not show whether the deletion is implicated in the pathogenesis of multiple myeloma.


Assuntos
Deleção Cromossômica , Cromossomos Humanos Par 13/genética , Hibridização in Situ Fluorescente/métodos , Mieloma Múltiplo/genética , Adulto , Estudos de Casos e Controles , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Sudão
18.
Tech Coloproctol ; 18(9): 795-803, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24633427

RESUMO

BACKGROUND: There is emerging evidence that complete mesocolic excision (CME) for colon cancer produces favorable oncologic outcomes. The applicability of CME technique in laparoscopic colectomy has not been fully explored. The aim of our retrospective study was to evaluate the feasibility of the CME technique with D3 lymphadenectomy in laparoscopic colectomy and its short- and long-term outcomes. METHODS: Between September 2006 and December 2009, 168 laparoscopic colectomies were performed for stages II and III colon cancer. Prospectively, collected data on demographics, tumor characteristics, complications, and outcomes were analyzed retrospectively. RESULTS: Eighty-seven patients (51.8 %) had stage II colon cancer, and 81 patients had stage III cancer. The mean operative time was 196.0 ± 61.2 min. The overall morbidity rate was 17.8 %, which included anastomotic leak in 10 patients (5.9 %). There was no operative mortality. The number of lymph nodes harvested was 27.8 ± 13.6. With a median follow-up of 57.3 months, locoregional recurrence and systemic metastasis developed in 6 (3.6 %) and 14 patients (8.3 %), respectively. Seven patients died of causes related to cancer, and all had stage III cancer. Disease-free survival at 5-years was 95.2 % for patients with stage II and 80.9 % for patients with stage III. CONCLUSIONS: Standardization of laparoscopic CME and D3 lymphadenectomy is expedient. The technique is associated with acceptable morbidity and provides excellent oncologic outcomes for stage II and stage III colon cancer. A longer follow-up is needed to validate the enhancement of oncological outcome related to this surgical concept.


Assuntos
Adenocarcinoma/secundário , Adenocarcinoma/cirurgia , Colectomia/métodos , Neoplasias do Colo/patologia , Neoplasias do Colo/cirurgia , Excisão de Linfonodo , Mesocolo/cirurgia , Adenocarcinoma/tratamento farmacológico , Adulto , Idoso , Idoso de 80 Anos ou mais , Fístula Anastomótica/etiologia , Quimioterapia Adjuvante , Colectomia/efeitos adversos , Neoplasias do Colo/tratamento farmacológico , Intervalo Livre de Doença , Estudos de Viabilidade , Feminino , Humanos , Laparoscopia/efeitos adversos , Laparoscopia/métodos , Excisão de Linfonodo/efeitos adversos , Metástase Linfática , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia , Estadiamento de Neoplasias , Duração da Cirurgia , Estudos Retrospectivos , Taxa de Sobrevida , Fatores de Tempo , Resultado do Tratamento , Adulto Jovem
19.
Acta Crystallogr Sect E Struct Rep Online ; 70(Pt 11): o1155, 2014 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-25484799

RESUMO

In the title compound, C17H14ClNOS, the aromatic rings are inclined to one another by 64.22 (9)°. The acrylo-nitrile group (C=C-C N) is planar to within 0.003 (2) Å, with the S atom and the methyl C atom displaced from this plane by 0.2317 (6) and -0.637 (2) Å, respectively. In the crystal, mol-ecules are linked via pairs of C-H⋯π inter-actions, forming inversion dimers. There are no other significant inter-molecular inter-actions present.

20.
Funct Plant Biol ; 512024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38870342

RESUMO

Genetic transformation is helpful in enhancing crops, utilising promoters that can be constitutive, inducible, or tissue-specific. However, the use of constitutive promoters may hinder plant growth due to energy consumption during cellular processes. To optimise transgene effects, tissue-specific promoters like root-specific ones prove valuable in addressing root-related issues and enhancing productivity. Yet, identified root-specific promoters in crop are limited. To address this gap, the expression pattern of the root-specific SlREO promoter was examined across various crops. Sequencing confirmed its identity and high homology (99%) with the NCBI database, distinct from other plants tested. Using the PLACE database, six motifs associated with root expression were identified, along with several other important elements. The 2.4kb SlREO promoter was linked to a ß-glucuronidase (GUS) reporter gene alongside the CaMV35S promoter in pRI 201-AN-GUS vectors to study its expression. Histochemistry revealed strong root-specific expression in tomato (Solanum lycopersicum ) root tissues and limited expression in stems. However, the SlREO promoter did not consistently maintain its root-specific expression in other plants. Conversely, the CaMV35S promoter exhibited constitutive expression across all tissues in various plants. This study underscores the potential of the SlREO promoter as a root-specific regulatory element, offering avenues for improving crops, particularly against environmental stresses.


Assuntos
Clonagem Molecular , Regulação da Expressão Gênica de Plantas , Raízes de Plantas , Plantas Geneticamente Modificadas , Regiões Promotoras Genéticas , Solanum lycopersicum , Solanum lycopersicum/genética , Raízes de Plantas/genética , Plantas Geneticamente Modificadas/genética , Proteínas de Plantas/genética , Proteínas de Plantas/metabolismo , Glucuronidase/genética , Glucuronidase/metabolismo , Sequência de Bases
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