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1.
Cardiovasc Diabetol ; 23(1): 201, 2024 Jun 12.
Artigo em Inglês | MEDLINE | ID: mdl-38867282

RESUMO

BACKGROUND: It's unclear if excess visceral adipose tissue (VAT) mass in individuals with prediabetes can be countered by adherence to a Mediterranean lifestyle (MEDLIFE). We aimed to examine VAT mass, MEDLIFE adherence, and their impact on type 2 diabetes (T2D) and diabetic microvascular complications (DMC) in individuals with prediabetes. METHODS: 11,267 individuals with prediabetes from the UK Biobank cohort were included. VAT mass was predicted using a non-linear model, and adherence to the MEDLIFE was evaluated using the 25-item MEDLIFE index, encompassing categories such as "Mediterranean food consumption," "Mediterranean dietary habits," and "Physical activity, rest, social habits, and conviviality." Both VAT and MEDLIFE were categorized into quartiles, resulting in 16 combinations. Incident cases of T2D and related DMC were identified through clinical records. Cox proportional-hazards regression models were employed to examine associations, adjusting for potential confounding factors. RESULTS: Over a median follow-up of 13.77 years, we observed 1408 incident cases of T2D and 714 cases of any DMC. High adherence to the MEDLIFE, compared to the lowest quartile, reduced a 16% risk of incident T2D (HR: 0.84, 95% CI: 0.71-0.98) and 31% for incident DMC (0.69, 0.56-0.86). Conversely, compared to the lowest quartile of VAT, the highest quartile increased the risk of T2D (5.95, 4.72-7.49) and incident any DMC (1.79, 1.36-2.35). We observed an inverse dose-response relationship between MEDLIFE and T2D/DMC, and a dose-response relationship between VAT and all outcomes (P for trend < 0.05). Restricted cubic spline analysis confirmed a nearly linear dose-response pattern across all associations. Compared to individuals with the lowest MEDLIFE quartile and highest VAT quartile, those with the lowest T2D risk had the lowest VAT and highest MEDLIFE (0.12, 0.08-0.19). High MEDLIFE was linked to reduced T2D risk across all VAT categories, except in those with the highest VAT quartile. Similar trends were seen for DMC. CONCLUSION: High adherence to MEDLIFE reduced T2D and MDC risk in individuals with prediabetes, while high VAT mass increases it, but MEDLIFE adherence may offset VAT's risk partly. The Mediterranean lifestyle's adaptability to diverse populations suggests promise for preventing T2D.


Assuntos
Diabetes Mellitus Tipo 2 , Angiopatias Diabéticas , Dieta Mediterrânea , Gordura Intra-Abdominal , Estado Pré-Diabético , Fatores de Proteção , Comportamento de Redução do Risco , Humanos , Estado Pré-Diabético/epidemiologia , Estado Pré-Diabético/diagnóstico , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/epidemiologia , Masculino , Feminino , Pessoa de Meia-Idade , Gordura Intra-Abdominal/fisiopatologia , Idoso , Fatores de Risco , Medição de Risco , Angiopatias Diabéticas/epidemiologia , Angiopatias Diabéticas/diagnóstico , Angiopatias Diabéticas/prevenção & controle , Fatores de Tempo , Incidência , Adiposidade , Reino Unido/epidemiologia , Adulto , Dieta Saudável , Exercício Físico , Estilo de Vida Saudável , Obesidade Abdominal/diagnóstico , Obesidade Abdominal/epidemiologia , Obesidade Abdominal/fisiopatologia , Estudos Prospectivos
2.
Hu Li Za Zhi ; 70(4): 87-94, 2023 Aug.
Artigo em Zh | MEDLINE | ID: mdl-37469323

RESUMO

Uncontrolled hemorrhagic shock is the main cause of death in patients with traumatic injuries. Resuscitative endovascular balloon occlusion of the aorta (REBOA) is a rapidly performed and less-invasive treatment to stop bleeding. The REBOA balloon may be placed at the location of bleeding to achieve hemostasis. Prior to balloon placement, the indications for placement must be evaluated, including non-thoracic aortic trauma and non-traumatic patients with postpartum hemorrhage, and the appropriate sheath size (from 5 to 8 French) must be selected based on the bleeding site. As vascular injury of aortic dissection, rupture, or perforation may occur during the procedure, changes in hemodynamic parameters should be monitored. After balloon placement, ischemic complications due to blood flow occlusion such as lower extremity ischemia and acute renal failure should be tracked. After balloon removal, reperfusion injuries may occur, which can result in multiple organ failure, and should be observed closely. When caring for patients receiving REBOA, physicians should explain the procedure to their families to obtain informed consent. Also, nurses should prepare supplies and closely monitor changes in critical life signs to minimize the risks of hypotension, arrhythmia, and changes in consciousness during the procedure. After placement, the neurovascular and peripheral limbs "5P" (pain, pallor, paresthesia, pulselessness and paralysis) condition should be evaluated and recorded in detail. This treatment approach requires further study and research to assess the long-term impacts of placement and improve quality of care in these patients.


Assuntos
Oclusão com Balão , Procedimentos Endovasculares , Cuidados de Enfermagem , Choque Hemorrágico , Feminino , Humanos , Aorta , Hemorragia/etiologia , Hemorragia/terapia , Choque Hemorrágico/terapia , Choque Hemorrágico/complicações , Oclusão com Balão/efeitos adversos , Oclusão com Balão/métodos , Procedimentos Endovasculares/efeitos adversos , Procedimentos Endovasculares/métodos
3.
Hu Li Za Zhi ; 68(5): 74-82, 2021 Oct.
Artigo em Zh | MEDLINE | ID: mdl-34549410

RESUMO

BACKGROUND: Drug-resistant strains of bacteria are associated with severe consequences such as bacteremia, shock, and death, and increase hospital stay durations and medical health expenses. Therefore, reducing the spread of drug-resistant strains is a priority concern. PURPOSE: This project was developed to reduce the number of colonization cases of drug-resistant strains and subsequently increase the quality of care provided in our intensive care unit. RESOLUTIONS: In this project, a chlorhexidine gluconate (CHG) bath standard protocol and CHG bath skill checklist were established, education and training courses were planned, a regular bed curtain replacement schedule and sink cleaning protocols were implemented, and regular audits were conducted. RESULTS: Immediately following project implementation (October - December 2018), the average monthly cases of Vancomycin-resistant enterococci colonization decreased from 6.08 to 4.33, and the average monthly cases of multi-drug resistant Acinebacter baumannii colonization decreased from 4.08 to 1.33. Furthermore, between January and July 2019, the average monthly cases of colonization for the abovementioned bacteria numbered 4 and 0.86, respectively, which met the level of reduction targeted in this project. CONCLUSIONS: The results of this project indicate that implementing CHG bed baths is effective in reducing the incidence of drug resistant strain colonization and rate of related infections in patients. CHG bed baths should be applied clinically to improve the quality of intensive care.


Assuntos
Anti-Infecciosos Locais , Infecção Hospitalar , Preparações Farmacêuticas , Banhos , Clorexidina/análogos & derivados , Infecção Hospitalar/prevenção & controle , Humanos , Unidades de Terapia Intensiva
4.
Hu Li Za Zhi ; 65(3): 96-102, 2018 06.
Artigo em Zh | MEDLINE | ID: mdl-29790144

RESUMO

Acute respiratory distress syndrome (ARDS) is a life-threatening disease, as acute inflammation in the lungs typically leads to hypoxia and symptoms of dyspnea. The treatment modalities of ARDS include mechanical ventilation, corticosteroid, extracorporeal membranous oxygenation, inhaled nitrogen oxide, and the prone position. Among these, the prone position is supported by evidence showing significantly reduced mortality in patients that adopt this modality. Lying in the prone position reduces atelectatic lung volumes by recruitment of dependent parts and facilitates normal regulation of alveolar ventilation, giving better-matched ventilation perfusion and, thus, improved oxygenation. Lying in the prone position should be initiated as early as possible and may be implemented when there is limited improvement after 12-24 hours under mechanical ventilation and when the PaO2/FiO2 ratio is less than 150 mmHg. However, the prone position may not be appropriate for patients with increased intracranial pressure, hemodynamic instability, an open abdominal wound, or pregnancy. Prior to setting a patient in the prone position, fixation of tubings should be affirmed, and all tubings should be reexamined after each adjustment in position in order to ensure that they are free of twists and function well. In addition, caution should be given to the skin at pressure points to avoid pressure sores and foam dressings may be applied in advance for protection. This article summarizes the pathophysiology of ARDS, the principle of applying the prone position, and related indications, complications, and nursing care in order to give nurses more confidence in caring for patients using the prone position.


Assuntos
Síndrome do Desconforto Respiratório/enfermagem , Humanos , Decúbito Ventral , Respiração Artificial , Síndrome do Desconforto Respiratório/terapia
5.
Hu Li Za Zhi ; 64(3): 90-97, 2017 Jun.
Artigo em Zh | MEDLINE | ID: mdl-28580563

RESUMO

Atrial fibrillation (AF) is a common type of arrhythmia that increases significantly the risk of blood clots in the heart and of stroke. Therefore, stroke prevention is a key goal of AF treatment. In the past, patients were required to take anticoagulants for the remainder of their life, to regularly the monitor international normalized ratio (INR) of prothrombin time (PT), and to avoid possible negative interactions with various drugs and foods. Left atrial appendage occlusion (LAAO), a novel device and technique, was thus developed for AF patients with contraindications to anticoagulants and a high risk of bleeding. When using this technique, the occluder is placed on the left atrial appendage in order to effectively prevent blood stasis and thrombi accumulation. Transesophageal echocardiogram and computed tomography are conducted prior to the LAAO procedure, which is similar to the procedure used for cardiac catheterization. After the LAAO procedure, the patient remains in the intensive care unit (ICU), where vital signs, bleeding at the puncture site, and pericardial tamponade complications are monitored. Health education on daily activities, anticoagulant use, and regular follow-up should be given prior to hospital discharge. While LAAO may not reduce the incidence of stroke, the benefits of this procedure include a significant reduction in bleeding complications as compared to procedures that use oral anticoagulants. Further studies including long-term follow up and in-depth examinations of this procedure are necessary. The present article offers a reference for clinical staffs who are responsible for the care of patients treated using the LAAO procedure.


Assuntos
Fibrilação Atrial/terapia , Dispositivo para Oclusão Septal , Trombose/prevenção & controle , Apêndice Atrial , Fibrilação Atrial/complicações , Átrios do Coração , Humanos , Acidente Vascular Cerebral/prevenção & controle
6.
Hu Li Za Zhi ; 63(1): 117-24, 2016 Feb.
Artigo em Zh | MEDLINE | ID: mdl-26813070

RESUMO

Hemodynamic monitoring is a very important treatment in intensive care units. Measurements taken during monitoring include pulmonary artery catheter (PAC), pulse-induced contour output (PiCCO), and non-invasive hemodynamic monitoring. PAC measures cardiopulmonary parameters using the thermodilution principle. PiCCO uses transpulmonary thermodilution and pulse contour analysis to measure cardiopulmonary parameters and extra-vascular lung water, to predict lung edema, and to differentiate between cardiogenic and non-cardiogenic respiratory failure. Non-invasive hemodynamic monitoring uses the thoracic electrical bioimpedance principle to measure electrical conductivity and then calculates stroke volume and cardiopulmonary parameters using the arrangement of red blood cells. The author is a nurse in an intensive care unit who is familiar with the various methods used in hemodynamic monitoring, with preparing the related devices, with briefing patients and family members prior to procedures, with related aseptic skills, with preventing complications during the insertion procedure, and with analyzing and interpreting those parameters accurately. The issues addressed in this paper are provided as a reference for nurses and other medical personnel to choose appropriate treatments when caring for critical patients.


Assuntos
Cuidados Críticos , Hemodinâmica , Monitorização Fisiológica , Débito Cardíaco , Cateterismo de Swan-Ganz , Humanos
7.
Hu Li Za Zhi ; 62(3): 78-82, 2015 Jun.
Artigo em Zh | MEDLINE | ID: mdl-26073960

RESUMO

Aortic stenosis has a high prevalence among individuals over 75 years of age. Transcatheter aortic valve implantation (TAVI) is a novel valve-replacement technique for patients with multiple chronic diseases who are at high risk of requiring aortic valve replacement surgery. Most of the time, the indicators of TAVI are detected during an echocardiographic exam. The femoral artery is the primary insertion site. The complications of TAVI include stroke, vascular dissection, bleeding, aortic valve regurgitation, and arrhythmia. In terms of clinical effectiveness, the mortality rate of TAVI is lower than percutaneous ballon valvuloplasty but similar to AVR. The unplanned cardiac-related re-admission rate within 30 days of discharge is lower for TAVI than for AVR. In terms of activity tolerance, TAVI is significantly better than both percutaneous ballon valvuloplasty and AVR. Comprehensive nursing care may reduce the incidence of complications associated with TAVI. Nursing care of TAVI includes explaining and providing instructions regarding TAVI prior to the procedure. After the TAVI procedure and while the patient is in the ICU, remove the endotracheal tube as soon as possible, monitor his / her neuro-cognitive status, monitor for early detection of a stroke event, record urine output to assess renal function, observe bleeding in the puncture site, and evaluate cardiac arrhythmia and pain. While in the general ward, resume early physical activities and educate the patient regarding the risks and the prevention of bleeding. This article provides references for clinical staff responsible to care for post-TAVI surgery patients.


Assuntos
Substituição da Valva Aórtica Transcateter , Humanos , Substituição da Valva Aórtica Transcateter/efeitos adversos , Substituição da Valva Aórtica Transcateter/métodos , Substituição da Valva Aórtica Transcateter/enfermagem
8.
Top Curr Chem ; 336: 177-96, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-22911488

RESUMO

Many genetic diseases, especially the inborn errors of metabolism, have very low incidences, so developing a newborn screening test for each disease is not practical. This obstacle was overcome by employing the tandem mass spectrometry (MS/MS) technology. In the analysis, the samples can be injected directly into the flowing system without passing through a column, and both acylcarnitine and amino acid profiles can be obtained at the same time. MS/MS newborn screening has been shown to improve the outcome of patients affected by a number of inborn errors of metabolism. Recently, MS/MS analytical methods were developed for second-tier tests of newborn screening; new substrates have also been developed to measure the activity of lysosomal enzymes so lysosomal storage diseases can be diagnosed by MS/MS method now.


Assuntos
Doenças por Armazenamento dos Lisossomos/diagnóstico , Erros Inatos do Metabolismo/diagnóstico , Triagem Neonatal/métodos , Espectrometria de Massas em Tandem/métodos , Aminoácidos/análise , Carnitina/análogos & derivados , Carnitina/análise , Humanos , Recém-Nascido
9.
J Affect Disord ; 358: 383-390, 2024 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-38735583

RESUMO

BACKGROUND: Healthier lifestyle decreased the risk of mental disorders (MDs) such as depression and anxiety. However, research on the effects of a comprehensive healthy lifestyle on their progression is lacking. METHODS: 385,704 individuals without baseline MDs from the UK Biobank cohort were included. A composite healthy lifestyle score was computed by assessing alcohol intake, smoking status, television viewing time, physical activity, sleep duration, fruit and vegetable intake, oily fish intake, red meat intake, and processed meat intake. Follow-up utilized hospital and death register records. Multistate model was used to examine the role of healthy lifestyle on the progression of specific MDs, while a piecewise Cox regression model was utilized to assess the influence of healthy lifestyle across various phases of disease progression. RESULTS: Higher lifestyle score reduced risks of transitions from baseline to anxiety and depression, as well as from anxiety and depression to comorbidity, with corresponding hazard ratios (HR) and 95 % confidence intervals (CI) of 0.94 (0.93, 0.95), 0.90 (0.89, 0.91), 0.94 (0.91, 0.98), and 0.95 (0.92, 0.98), respectively. Healthier lifestyle decreased the risk of transitioning from anxiety to comorbidity within 2 years post-diagnosis, with HR 0.93 (0.88, 0.98). Higher lifestyle scores at 2-4 years and 4-6 years post-depression onset were associated with reduced risk of comorbidity, with HR 0.93 (0.87, 0.99) and 0.92 (0.86, 0.99), respectively. LIMITATION: The generalizability to other ethnic groups is limited. CONCLUSION: This study observed a protective role of holistic healthy lifestyle in the trajectory of MDs and contributed to identifying critical progression windows.


Assuntos
Progressão da Doença , Estilo de Vida Saudável , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Consumo de Bebidas Alcoólicas/epidemiologia , Ansiedade/epidemiologia , Comorbidade , Depressão/epidemiologia , Exercício Físico , Incidência , Transtornos Mentais/epidemiologia , Modelos de Riscos Proporcionais , Estudos Prospectivos , Fumar/epidemiologia , Biobanco do Reino Unido , Reino Unido/epidemiologia
10.
Foodborne Pathog Dis ; 10(4): 362-7, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23510496

RESUMO

Human Noroviruses (HuNoVs) are the most frequent cause of outbreaks of acute gastroenteritis following the ingestion of raw or improperly cooked oysters. Although highly sensitive methods to detect HuNoV in oysters using reverse transcriptase-polymerase chain reaction (RT-PCR) are available, rapid methods to process samples for RT-PCR are still needed. The conventional approach is to concentrate the virus first before RNA purification to maximize assay sensitivity, but the procedures used are cumbersome. We developed a new hybridization method that is much faster and more effective compared to existing technology. The procedure includes an initial extraction of total RNA from the digestive diverticula of oysters using TRI Reagent, followed by HuNoV RNA purification using a capture probe and then HuNoV detection by real-time RT-PCR. The detection limit is approximately 100 PCR detection units of HuNoV per sample. Compared to published methods that require an initial virus concentration step before RNA extraction, the new method is much faster to complete. Approximately 3 h are needed to purify HuNoV RNA using the new method compared to at least 8 h using conventional methods. Coupled with real-time RT-PCR, the new method can detect HuNoV in contaminated oysters within 8 h. The effectiveness of the method was demonstrated using live artificially contaminated oysters and wild oysters.


Assuntos
Crassostrea/virologia , Norovirus/isolamento & purificação , RNA Viral/isolamento & purificação , Reação em Cadeia da Polimerase Via Transcriptase Reversa/métodos , Animais , Contaminação de Alimentos/análise , Microbiologia de Alimentos , Hibridização de Ácido Nucleico/métodos
11.
Microorganisms ; 10(8)2022 Jul 26.
Artigo em Inglês | MEDLINE | ID: mdl-35893563

RESUMO

Biofilm commonly forms on the surfaces of cellulosic biomass but its roles in cellulose degradation remain largely unexplored. We used Bacillus subtilis to study possible mechanisms and the contributions of two major biofilm components, extracellular polysaccharides (EPS) and TasA protein, to submerged biofilm formation on cellulose and its degradation. We found that biofilm produced by B. subtilis is able to absorb exogenous cellulase added to the culture medium and also retain self-produced cellulase within the biofilm matrix. The bacteria that produced more biofilm degraded more cellulose compared to strains that produced less biofilm. Knockout strains that lacked both EPS and TasA formed a smaller amount of submerged biofilm on cellulose than the wild-type strain and also degraded less cellulose. Imaging of biofilm on cellulose suggests that bacteria, cellulose, and cellulases form cellulolytic biofilm complexes that facilitate synergistic cellulose degradation. This study brings additional insight into the important functions of biofilm in cellulose degradation and could potentiate the development of biofilm-based technology to enhance biomass degradation for biofuel production.

12.
Ann Pharmacother ; 45(4): 476-84, 2011 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21487086

RESUMO

BACKGROUND: The association between consumption of multivitamins and breast cancer is inconsistent in epidemiologic studies. OBJECTIVE: To perform a meta-analysis of cohort and case-control studies to evaluate multivitamin intake and its relationship with breast cancer risk. METHODS: The published literature was systematically searched and reviewed using MEDLINE (1950 through July 2010), EMBASE (1980 through July 2010), and the Cochrane Central Register of Controlled Trials (The Cochrane Library 2010 issue 1). Studies that included specific risk estimates were pooled using a random-effects model. The bias and quality of these studies were assessed with REVMAN statistical software (version 5.0) and the GRADE method of the Cochrane Collaboration. RESULTS: Eight of 27 studies that included 355,080 subjects were available for analysis. The total duration of multivitamin use in these trials ranged from 3 to 10 years. The frequency of current use in these studies ranged from 2 to 6 times/week. In analyses by duration of use 10 years or longer or 3 years or longer and by frequency 7 or more times/week that were reported in these studies, multivitamin use was not significantly associated with the risk of breast cancer. Only 1 recent Swedish cohort study concluded that multivitamin use is associated with an increased risk of breast cancer. The results of a meta-analysis that pooled data from 5 cohort studies and 3 case-control studies indicated that the overall multivariable relative risk and odds ratio were 0.10 (95% CI 0.60 to 1.63; p = 0.98) and 1.00 (95% CI 0.51 to 1.00; p = 1.00), respectively. The association was not statistically significant. CONCLUSIONS: Multivitamin use is likely not associated with a significant increased or decreased risk of breast cancer, but these results highlight the need for more case-control studies or randomized controlled clinical trials to further examine this relationship.


Assuntos
Neoplasias da Mama/epidemiologia , Vitaminas/administração & dosagem , Adulto , Idoso , Neoplasias da Mama/etiologia , Estudos de Casos e Controles , Estudos de Coortes , Suplementos Nutricionais/estatística & dados numéricos , Feminino , Humanos , Metanálise como Assunto , Pessoa de Meia-Idade , Análise Multivariada , Fatores de Risco , Estados Unidos/epidemiologia , Vitaminas/efeitos adversos , Adulto Jovem
13.
Dis Aquat Organ ; 91(2): 97-103, 2010 Sep 02.
Artigo em Inglês | MEDLINE | ID: mdl-21387988

RESUMO

Taura syndrome is an economically important disease that can cause catastrophic losses of farmed shrimp. Without effective treatments for Taura syndrome virus (TSV), one approach to managing the problem is to selectively breed shrimp populations with increased disease resistance. To better understand why some shrimp can survive exposure to TSV, information is needed on how viral loads progress and persist following infection. Data reported here show that mortalities occurring mostly within 1 wk of infection are associated with high viral titers, and titers as high as 10(8.7) genome copies per microl hemolymph can persist for up to 3 wk in survivors. Thereafter, and up to approximately 9 wk post-exposure, most surviving shrimp remain chronically infected with TSV loads ranging from 10(4) to 10(8) genome copies per microl hemolymph. Challenging shrimp from families with varying TSV resistance showed that in shrimp from less resistant families, the TSV load in hemolymph increased earlier and reached higher peaks than in shrimp from more resistant families. Although TSV loads in moribund shrimp from families differing in resistance did not differ significantly, infection loads among survivors were lower in shrimp from more resistant families. Taken together, the data suggest that lethal infection loads can occur in both more and less susceptible shrimp and that survivors represent shrimp in which viral expansion is better contained.


Assuntos
Dicistroviridae/isolamento & purificação , Hemolinfa/virologia , Penaeidae/virologia , Animais , Fatores de Tempo , Carga Viral
14.
Ecol Evol ; 9(23): 13515-13520, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31871662

RESUMO

Taxonomic identification can be difficult when two or more species appear morphologically similar. DNA barcoding based on the sequence of the mitochondrial cytochrome c oxidase 1 gene (COI) is now widely used in identifying animal species. High-resolution melting analysis (HRM) provides an alternative method for detecting sequence variations among amplicons without having to perform DNA sequencing. The purpose of this study was to determine whether HRM of the COI barcode can be used to distinguish animal species. Using anurans as a model, we found distinct COI melting profiles among three congeners of both Lithobates spp. and Hyla spp. Sequence variations within species shifted the melting temperature of one or more melting domains slightly but do not affect the distinctness of the melting profiles for each species. An NMDS ordination plot comparing melting peak profiles among eight Anuran species showed overlapping profiles for Lithobates sphenocephala and Gastrophryne carolinensis. The COI amplicon for both species contained two melting domains with melting temperatures that were similar between the two species. The two species belong to two different families, highlighting the fact that COI melting profiles do not reveal phylogenetic relationships but simply reflect DNA sequence differences among stretches of DNA within amplicons. This study suggests that high-resolution melting analysis of COI barcodes (COI-HRM) may be useful as a simple and rapid method to distinguish animal species that appear morphologically similar.

15.
J Formos Med Assoc ; 107(2): 139-44, 2008 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-18285246

RESUMO

BACKGROUND/PURPOSE: Glutaric aciduria type 1 (GA1) is an inborn error of lysine and tryptophan metabolism. There is a lack of initial diagnostic signs of the disease, but late treatment often results in severe neurologic impairment. In this study, we analyzed the results of screening for GA1 in a Chinese population. METHODS: Dry blood spots were obtained at about 3 days of age from 357,307 newborns and tested for elevation of glutaryl (C5DC)-carnitine by tandem mass spectroscopy. A second sample of blood spots was required from those cases with abnormal elevation of C5DC-carnitine (higher than the cut-off value) (recall). If the results remained abnormal, those cases were referred for confirmation of the diagnosis and treatment. RESULTS: Between August 2001 and February 2005, there were 40 cases with C5DC-carnitine more than 0.13 microM (the cut-off value), from whom a second sample of blood spots was obtained (recall rate, 0.02%); two cases were confirmed to be affected by GA1. Because of the low positive prediction rate using this cut-off value, we elevated the cut-off value slightly. Between February 2005 and August 2006, there were eight cases with C5DC-carnitine more than 0.22 microM from whom a second sample of blood spots was obtained (recall rate, 0.01%); three cases were confirmed to be affected by GA1. All five cases with persistent elevation of C5DC-carnitine were referred and diagnosis was confirmed in each, giving an incidence of 1 in 71,461 newborns. There were no false negatives. Magnetic resonance imaging studies obtained from four cases showed frontotemporal atrophy at the time of diagnosis. Two cases were followed for over 1 year, and under treatment with dietary control and carnitine supplementation, both had normal development and neither exhibited a frank episode of encephalopathic crisis. CONCLUSION: With properly established cut-offs, GA1 can be successfully screened for in populations with a low incidence of the disease. Early treatment is likely to improve the outcome of cases discovered by screening.


Assuntos
Erros Inatos do Metabolismo dos Aminoácidos/diagnóstico , Glutaril-CoA Desidrogenase/deficiência , Triagem Neonatal/métodos , Povo Asiático , Humanos , Recém-Nascido , Taiwan , Espectrometria de Massas em Tandem
16.
J Microbiol Methods ; 140: 77-81, 2017 09.
Artigo em Inglês | MEDLINE | ID: mdl-28728910

RESUMO

Analysis of microbial communities is of broad interest in biology and high throughput sequencing is now the preferred method. However, some studies may not need the level of detail high throughput sequencing provides and its cost may limit the number of samples that can be sequenced. High resolution melting analysis (HRM) of 16S rRNA gene variable regions has been proposed as an efficient and low cost method to prioritize samples for sequencing but more specific primers are needed and its efficacy needs to be confirmed. We tested a more specific pair of primers and compared results concerning the structure of microbial communities in tadpole intestine and feces obtained using HRM, denaturing gradient gel electrophoresis (DGGE) and high-throughput sequencing performed in parallel. All three methods showed similar conclusions concerning the communities and revealed communities that differed among intestinal regions and feces. The improved HRM method targets a shorter amplicon in the V3 region of the 16S rRNA gene and uses non-degenerate primers, both of which increase the sensitivity of HRM. The HRM approach was shown to be as effective as DGGE for comparing microbial communities, is considerably easier to perform, and can be used to assess differences in microbial community structure among a large number of samples before committing to sequencing.


Assuntos
Bactérias/genética , Primers do DNA , Consórcios Microbianos/fisiologia , Reação em Cadeia da Polimerase/métodos , Temperatura de Transição , Animais , Eletroforese em Gel de Gradiente Desnaturante/métodos , Fezes/microbiologia , Sequenciamento de Nucleotídeos em Larga Escala , Intestinos/microbiologia , Larva/microbiologia , RNA Ribossômico 16S/genética , Análise de Sequência de DNA
17.
FEMS Microbiol Lett ; 364(5)2017 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-28130369

RESUMO

Bacterial competition for resources is common in nature but positive interactions among bacteria are also evident. We speculate that the structural complexity of substrate might play a role in mediating bacterial interactions. We tested the hypothesis that the frequency of antagonistic interactions among lignocellulolytic bacteria is reduced when complex polysaccharide is the main carbon source compared to when a simple sugar such as glucose is available. Results using all possible pairwise interactions among 35 bacteria isolated from salt marsh detritus showed that the frequency of antagonistic interactions was significantly lower on carboxymethyl cellulose (CMC)-xylan medium (7.8%) than on glucose medium (15.5%). The two interaction networks were also different in their structures. Although 75 antagonistic interactions occurred on both media, there were 115 that occurred only on glucose and 20 only on CMC-xylan, indicating that some antagonistic interactions were substrate specific. We also found that the frequency of antagonism differed among phylogenetic groups. Gammaproteobacteria and Bacillus sp. were the most antagonistic and they tended to antagonize Bacteroidetes and Actinobacteria, the most susceptible groups. Results from the study suggest that substrate complexity affects how bacteria interact and that bacterial interactions in a community are dynamic as nutrient conditions change.


Assuntos
Antibiose , Bactérias/metabolismo , Metabolismo dos Carboidratos , Celulose/metabolismo , Xilanos/metabolismo , Actinobacteria/classificação , Actinobacteria/isolamento & purificação , Actinobacteria/metabolismo , Actinobacteria/fisiologia , Bactérias/genética , Bactérias/isolamento & purificação , Bacteroidetes/isolamento & purificação , Bacteroidetes/metabolismo , Bacteroidetes/fisiologia , DNA Bacteriano , DNA Ribossômico , Gammaproteobacteria/isolamento & purificação , Gammaproteobacteria/metabolismo , Gammaproteobacteria/fisiologia , Filogenia , RNA Ribossômico 16S , Análise de Sequência de DNA
18.
Biochim Biophys Acta ; 1731(3): 139-48, 2005 Dec 20.
Artigo em Inglês | MEDLINE | ID: mdl-16298440

RESUMO

The insulin-like growth factor I (IGF-I) gene was characterized in channel catfish. Partial cDNA sequence, missing exon 1 and part of exon 2, was obtained in 5'- and 3'-RACE experiments. Direct sequencing of two bacterial artificial chromosome clones revealed gene structure and provided sequence from 640 bp upstream of the initiator methionine to 136 bp beyond the polyadenylation site. Genomic sequence contained a putative TATA box 506 bp upstream of the initiator methionine. The 477-bp reading frame within five exons encoded a 159-amino acid (aa) pre-propeptide highly similar to IGF-I in higher vertebrates. The sequence encoding the signal peptide was unique in catfish and contained 70% G+C content with the potential for a stable stem-loop structure. Full-length cDNA was only maintained in recombination-deficient (DH10B) strain E. coli. Levels of IGF-I mRNA were highest in liver, followed by brain and muscle, then heart and kidney (P<0.05). A CT/GA dinucleotide microsatellite in intron 1 was highly polymorphic in commercial channel catfish, and permitted placement of the IGF-I gene on the catfish genetic map. However, specific IGF-I alleles were not correlated with differences in growth rate from 100 to 130 days post-hatch in USDA103 line catfish.


Assuntos
Genes Controladores do Desenvolvimento , Ictaluridae/genética , Fator de Crescimento Insulin-Like I/genética , Sequência de Aminoácidos , Animais , Sequência de Bases , Mapeamento Cromossômico , Clonagem Molecular , Variação Genética , Ictaluridae/embriologia , Fator de Crescimento Insulin-Like I/análise , Fator de Crescimento Insulin-Like I/metabolismo , Dados de Sequência Molecular , Fenótipo , Polimorfismo Genético , RNA Mensageiro/metabolismo , Alinhamento de Sequência , Especificidade da Espécie
19.
J Formos Med Assoc ; 105(11): 882-6, 2006 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-17098689

RESUMO

BACKGROUND/PURPOSE: Neonatal screening using tandem mass spectrometry (MS/MS) started in Taiwan in 2000. We evaluated the efficacy of this system by analyzing the frequency of diseases and the outcome of the patients identified. METHODS: Between August 2001 and July 2004, 199, 922 neonates were screened for 10 amino acids and acylcarnitines using MS/MS in a single center. RESULTS: In total, 29 cases of inborn errors of metabolism were detected. The overall prevalence was one per 6894 births. The most common inborn error found was 3-methylcrotonyl CoA carboxylase deficiency (10 cases, 34.5%), but none of the cases needed aggressive treatment. There were two cases of type I glutaric aciduria, two cases of maple syrup urine disease, and one case of type II citrullinemia, and early therapeutic intervention was effective for all of them. CONCLUSION: We found that MS/MS neonatal screening was valuable in the early diagnosis of severe and treatable inborn errors of metabolism such as organic acidemias and urea cycle disorders. It also detected less severe disorders that required only observation.


Assuntos
Espectrometria de Massas , Erros Inatos do Metabolismo/diagnóstico , Triagem Neonatal , Aminoácidos/sangue , Carnitina/análogos & derivados , Carnitina/sangue , Feminino , Humanos , Recém-Nascido , Masculino , Taiwan
20.
Hu Li Za Zhi ; 53(5): 93-7, 2006 Oct.
Artigo em Zh | MEDLINE | ID: mdl-17004213

RESUMO

This article describes an experience of providing nursing care to an eighty year-old patient with urinary tract infection (UTI). The author cared for this patient in the role of clinical geriatric nurse specialist from May 11 to 23 in 2005. Through comprehensive assessment, careful review of medical records, contact with family and nursing home healthcare workers, it was determined that the patient's cognition and physical function declines were due to delirium resulting from the last time the patient had been hospitalized in the intensive care unit (ICU). In order to prevent incidents of delirium, three nursing goals were set: controlling infection, avoidance of delirium recurrence, and recovery of prior levels of physical function and self-care ability. Nursing interventions used included UTI control, tube and catheter removal as early as possible, control of environmental factors, and muscle strength and exercise training. After two weeks of care, the patient could take food orally and the nasogastric (NG) tube had been successfully removed. Physical function and self-care ability improved from "dependent" to "partial assistance". Although UTI was controlled, removal of the foley tube failed due to prostate hypertrophy. No delirious event occurred during hospitalization and cognitive functions improved. From this experience, early assessment and intervention should be conducted for high-risk elderly patients in order to prevent delirious events and declines in cognitive and physical functions. The author hopes this case report will prove a useful reference to nurses charged with caring for elderly patients at risk for delirium.


Assuntos
Delírio/enfermagem , Delírio/prevenção & controle , Idoso , Idoso de 80 Anos ou mais , Hospitalização , Humanos
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