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1.
Plant Biol (Stuttg) ; 26(4): 560-567, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38520244

RESUMO

Pigeon pea (Cajanus cajan) is widely cultivated for its nutritional and medicinal value yet remains an orphan crop as productivity has not been improved because of a lack of genome and non-coding genome information. Non-coding RNAs, like miRNAs and long non-coding RNAs (lncRNAs), are involved in regulation of growth, metabolism, development, and stress response, and have a critical role in post-transcriptional gene regulation (PTGR). We attempted to elucidate the roles of miRNAs and lncRNAs in pigeon pea through experimental validation of computationally predicted miRNAs and lncRNAs and targets of miRNAs on mRNAs. We experimentally validated 20 miRNAs and 11 lncRNAs. We predicted cleavage sites of three miRNA targets: serine/threonine-protein kinase, polygalacturonase, beta-galactosidase. We identified 469 targets of 265 miRNAs and their functional annotations using computational methods. We built a miRNA-mRNA-lncRNA network model, with the miRNAs targeting both mRNAs and lncRNAs, to obtain information on the interplay of these three molecules. A confirmed interaction through experimental validation was established between miRNA, namely cca-miR1535a targeting the mRNA for beta-galactosidase, as well as the lncRNA cca-lnc-020033. Our findings increase knowledge of the non-coding genome of pigeon pea and their roles in PTGR and in improving agronomic traits of this pulse crop.


Assuntos
Cajanus , Regulação da Expressão Gênica de Plantas , MicroRNAs , RNA Longo não Codificante , RNA Mensageiro , RNA de Plantas , Cajanus/genética , MicroRNAs/genética , MicroRNAs/metabolismo , RNA Longo não Codificante/genética , RNA Longo não Codificante/metabolismo , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , RNA de Plantas/genética
2.
Int J Diabetes Dev Ctries ; : 1-19, 2023 Apr 19.
Artigo em Inglês | MEDLINE | ID: mdl-37360324

RESUMO

Sulfonylureas (SU) continue to be a vital therapeutic category of oral hypoglycemic agents (OHAs) for the management of type 2 diabetes mellitus (T2DM). Physicians consider modern SU (gliclazide and glimepiride) as "safe and smart" choices for T2DM management. The presence of multiple international guidelines and scarcity of a national guideline may contribute to the challenges faced by few physicians in choosing the right therapeutic strategy. The role of SU in diabetes management is explicit, and the present consensus aims to emphasize the benefits and reposition SU in India. This pragmatic, practical approach aims to define expert recommendations for the physicians to improve caregivers' knowledge of the management of T2DM, leading to superior patient outcomes.

3.
Water Sci Technol ; 87(10): 2504-2528, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-37257106

RESUMO

Crop evapotranspiration is essential for planning and designing an efficient irrigation system. The present investigation assessed the capability of four machine learning algorithms, namely, XGBoost linear regression (XGBoost Linear), XGBoost Ensemble Tree, Polynomial Regression (Polynomial Regr), and Isotonic Regression (Isotonic Regr) in modeling daily reference evapotranspiration (ETo) at IARI, New Delhi. The models were developed considering full and limited dataset scenarios. The efficacy of the constructed models was assessed against the Penman-Monteith (PM56) model estimated daily ETo. Results revealed the under full and limited dataset conditions, XGBoost Ensemble Tree gave the best results for daily ETo modeling during the model training period, while in the testing period under scenarios S1(Tmax) and S2 (Tmax, and Tmin), the Isotonic Regr models yielded superior results over other models. In addition, the XGBoost Ensemble Tree models outperformed others for the rest of the input data scenarios. The XGBoost Ensemble Tree algorithms reported the best values of correlation coefficient (r), mean absolute error (MAE), mean square error (MSE), root mean square error (RMSE), and mean absolute percentage error (MAPE). Thus, we recommend applying the XGBoost Ensemble Tree algorithm for precisely modeling daily ETo in semi-arid climatic conditions.


Assuntos
Algoritmos , Inteligência
4.
Anaerobe ; 75: 102555, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35367613

RESUMO

OBJECTIVES: Previously considered solely an opportunistic pathogen, Clostridium innocuum (CI) was recently reported in Taiwan to be an emerging cause of antibiotic-associated diarrhea and clinically indistinguishable from Clostridioides difficile (CD) infection. We previously identified CI culture supernatant being cross-reactive with commercial CD toxin enzyme immunoassays. We aimed to identify and characterize the cross-reacting protein and determine whether it functioned as a human toxin. METHODS: We performed western blots using CI culture supernatants and CD anti-toxin antibodies and identified interacting bands. We identified protein(s) using tandem mass spectrometry and evaluated them by cytotoxicity assays. RESULTS: CI, but not CD, was isolated from stool of 12 children and adults with diarrhea. Culture supernatant from 6/12 CI isolates, and an ATCC reference strain, tested positive for CD toxins (total 7/13 isolates) by commercial EIA. Using two of these isolates, we identified two ∼40 kDa hypothetical proteins, CI_01447 and CI_01448, and confirmed cross-reactivity with CD anti-toxin antibodies by enzyme immunoassay and Western blot. Whole-genome sequencing confirmed all 13 isolates contained both genes, which were highly conserved. We observed no cytopathic or cytotoxic effects to HeLa cells when treated with these proteins. We identified amino acid sequence similarity to the NlpC/P60 family of proteins. CONCLUSIONS: Our findings do not suggest CI proteins CI_01448 and CI_01447, which cross-react with antibodies against CD toxins A and B, are toxic to HeLa cells. Further studies are needed to determine the function of these cross-reacting proteins and the potential virulence factors that could be responsible for CI diarrheal disease.


Assuntos
Toxinas Bacterianas , Clostridioides difficile , Infecções por Clostridium , Adulto , Proteínas de Bactérias/análise , Proteínas de Bactérias/genética , Toxinas Bacterianas/genética , Criança , Diarreia , Enterotoxinas/genética , Fezes/química , Firmicutes , Células HeLa , Humanos
5.
J Geophys Res Space Phys ; 125(7): e2020JA027778, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32999806

RESUMO

In this study, the ion composition of flux transfer events (FTEs) observed within the magnetosheath proper is examined. These FTEs were observed just upstream of the Earth's postnoon magnetopause by the National Aeronautics and Space Administration (NASA) Magnetospheric Multiscale (MMS) spacecraft constellation. The minor ion characteristics are described using energy spectrograms, flux distributions, and ion moments as the constellation encountered each FTE. In conjunction with electron data and magnetic field observations, such observations provide important contextual information on the formation, topologies, and evolution of FTEs. In particular, minor ions, when combined with the field-aligned streaming of electrons, are reliable indicators of FTE topology. The observations are also placed (i) in context of the solar wind magnetic field configuration, (ii) the connection of the sampled flux tube to the ionosphere, and (iii) the location relative to the modeled reconnection line at the magnetopause. While protons and alpha particles were often depleted within the FTEs relative to the surrounding magnetosheath plasma, the He+ and O+ populations showed clear enhancements either near the center or near the edges of the FTE, and the bulk plasma flow directions are consistent with magnetic reconnection northward of the spacecraft and convection from the dayside toward the flank magnetopause.

6.
J Appl Microbiol ; 125(1): 190-202, 2018 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-29573511

RESUMO

AIMS: A novel approach was employed to study the growth of three cyanobacterial strains namely Oscillatoria sp. (AP17), Leptolyngbya sp. (AP3b) and Chroococcus sp. (AP3U). Furthermore, their broad metabolite profile, production of pigments, exopolysaccharide (EPS) and antimicrobial activity were evaluated in response to contrasting cultivation modes: biofilm or planktonic. METHODS AND RESULTS: The biofilm culture mode was carried out in the patented conico-cylindrical flask (CCF) and the planktonic culture mode was carried out in an Erlenmeyer flask (EF). The amount of polysaccharide that was released and that remained capsular/bound was higher in CCF compared to EF cultivation. Amount of chlorophyll a produced by Oscillatoria (AP17) was higher in the CCF compared to the EF cultivation. Highest antimicrobial activities were exhibited by Leptolyngbya (AP3b) biofilm than other biofilms as well as planktonic biomass. Metabolite profiles of Cyanobacteria were revealed by various chromatographic techniques and showed clear differences among the two contrasting modes of cultivation. CONCLUSIONS: The results showed clear differences in the mode of growth for achieving maximum chlorophyll a, EPS and bioactive metabolite production of the Cyanobacteria. SIGNIFICANCE AND IMPACT OF THE STUDY: The present study augmented the information which can enhance wider exploration of the biofilm mode of cultivation of Cyanobacteria.


Assuntos
Biofilmes/crescimento & desenvolvimento , Reatores Biológicos/microbiologia , Cianobactérias , Plâncton , Técnicas de Cultura de Células/instrumentação , Cianobactérias/crescimento & desenvolvimento , Cianobactérias/metabolismo , Plâncton/crescimento & desenvolvimento , Plâncton/metabolismo , Áreas Alagadas
7.
Mar Pollut Bull ; 127: 412-423, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-29475679

RESUMO

In order to examine the health of the coastal waters off Visakhapatnam in terms of prevalence and abundance of heterotrophic (H), indicator and pathogenic (P) bacterial counts (BC) and influence of physical processes on them, time-series observations were conducted during January (winter), March (spring), July (summer) and October (post-monsoon). We noticed the impact of physical forces on substantial variations in abundance and distribution of the HBC, total coliforms, Enterococcus faecalis and Pseudomonas aeruginosa in the study region. Based on our results Escherichia coli and other PBC were not much influenced by the physical conditions. It has been noticed that the perennial existence of the high abundance of IBC and PBC above the standard limits during the entire study period leading to an alarming situation in the coastal waters off Visakhapatnam.


Assuntos
Bactérias/isolamento & purificação , Processos Heterotróficos , Água do Mar/microbiologia , Baías , Monitoramento Ambiental , Estações do Ano
8.
J Assoc Physicians India ; 65(3 Suppl): 16-22, 2017 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-28832100

RESUMO

INTRODUCTION: Gestational Diabetes Mellitus (GDM), diabetes diagnosed during pregnancy is associated with maternal (caesarean delivery, hypoglycaemia, hyperbilirubinaemia, shoulder dystocia, pre-term delivery and birth trauma) and fetal (Hyperbilirubinaemia in offspring, Neonatal hypoglycaemia, Macrosomia) complications. Despite, insulin being the standard treatment for GDM cases, there is no existing comprehensive consensus update on use of insulin in Indian patients with GDM. OBJECTIVE: To provide simple and easily implementable guidelines to healthcare physicians on use of insulin in GDM. METHODS: Each consensus based on indications, choice of insulin regimen , titration and insulin therapy during intrapartum and postpartum was presented based on established guidelines and published scientific literature. These evaluations were then factored into the national context based on the expert committee representatives' patient-physician experience in their clinical practice and common therapeutic practices followed in India for successful GDM management. RESULTS: Recommendations based on use of insulin in GDM has been developed. The key recommendations are:to monitor fasting plasma glucose (FPG) and 2-hour post prandial glucose PPG levels and the glycaemic targets are: FPG < 95 mg/dL and 2-hour PPG < 120 mg/dL, short-and intermediate acting human insulin are the first choice of insulin regimens, rapid-acting (Insulin Aspart or Lispro) may be considered, use basal/intermediate acting insulin at bedtime, if FPG>110 mg/dL. During intrapartum, start IV insulin infusion with hourly glucose monitoring. Those women who require insulin < 20 U over 24 hours prior to labor may not need interpartum use of insulin infusion and Insulin dosing is stopped after birth and capillary glucose monitoring for 24-48 hours. CONCLUSIONS: We hope that the consensus based recommendations mentioned in this paper will be a useful reference tool for healthcare practitioners to achieve glycaemic targets in GDM patients.


Assuntos
Diabetes Gestacional/tratamento farmacológico , Hipoglicemiantes/uso terapêutico , Insulina/uso terapêutico , Glicemia/metabolismo , Consenso , Diabetes Gestacional/sangue , Feminino , Humanos , Hipoglicemiantes/administração & dosagem , Insulina/administração & dosagem , Período Periparto , Guias de Prática Clínica como Assunto , Gravidez
11.
BMC Health Serv Res ; 16(1): 595, 2016 10 20.
Artigo em Inglês | MEDLINE | ID: mdl-27765043

RESUMO

BACKGROUND: User fees have generally fallen out of favor across Africa, and they have been associated with reductions in access to healthcare. We examined the effects of the introduction and removal of user fees on outpatient attendances and new diagnoses of HIV, malaria, and tuberculosis in Neno District, Malawi where user fees were re-instated at three of 13 health centres in 2013 and subsequently removed at one of these in 2015. METHODS: We conducted two analyses. Firstly, an unadjusted comparison of outpatient visits and new diagnoses over three periods between July 2012 and October 2015: during the period with no user fees, at the re-introduction of user fees at four centres, and after the removal of user fees at one centre. Secondly, we estimated a linear model of the effect of user fees on the outcome of interest that controlled for unobserved health centre effects, monthly effects, and a linear time trend. RESULTS: The introduction of user fees was associated with a change in total attendances of -68 % [95 % CI: -89 %, -12 %], similar reductions were observed for new malaria and HIV diagnoses. The removal of user fees was associated with an increase in total attendances of 352 % [213 %, 554 %] with similar increases for malaria diagnoses. The results were not sensitive to control group or model specification. CONCLUSIONS: User fees for outpatient healthcare services present a barrier to patients accessing healthcare and reduce detection of serious infectious diseases.


Assuntos
Doenças Transmissíveis/diagnóstico , Honorários e Preços , Aceitação pelo Paciente de Cuidados de Saúde , Adolescente , Adulto , África , Feminino , Acessibilidade aos Serviços de Saúde/economia , Humanos , Estudos Longitudinais , Malaui , Pessoa de Meia-Idade , Cobertura Universal do Seguro de Saúde , Adulto Jovem
12.
Med Phys ; 43(5): 2443, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-27147355

RESUMO

PURPOSE: Head motion during PET brain imaging can cause significant degradation of image quality. Several authors have proposed ways to compensate for PET brain motion to restore image quality and improve quantitation. Head restraints can reduce movement but are unreliable; thus the need for alternative strategies such as data-driven motion estimation or external motion tracking. Herein, the authors present a data-driven motion estimation method using a preprocessing technique that allows the usage of very short duration frames, thus reducing the intraframe motion problem commonly observed in the multiple frame acquisition method. METHODS: The list mode data for PET acquisition is uniformly divided into 5-s frames and images are reconstructed without attenuation correction. Interframe motion is estimated using a 3D multiresolution registration algorithm and subsequently compensated for. For this study, the authors used 8 PET brain studies that used F-18 FDG as the tracer and contained minor or no initial motion. After reconstruction and prior to motion estimation, known motion was introduced to each frame to simulate head motion during a PET acquisition. To investigate the trade-off in motion estimation and compensation with respect to frames of different length, the authors summed 5-s frames accordingly to produce 10 and 60 s frames. Summed images generated from the motion-compensated reconstructed frames were then compared to the original PET image reconstruction without motion compensation. RESULTS: The authors found that our method is able to compensate for both gradual and step-like motions using frame times as short as 5 s with a spatial accuracy of 0.2 mm on average. Complex volunteer motion involving all six degrees of freedom was estimated with lower accuracy (0.3 mm on average) than the other types investigated. Preprocessing of 5-s images was necessary for successful image registration. Since their method utilizes nonattenuation corrected frames, it is not susceptible to motion introduced between CT and PET acquisitions. CONCLUSIONS: The authors have shown that they can estimate motion for frames with time intervals as short as 5 s using nonattenuation corrected reconstructed FDG PET brain images. Intraframe motion in 60-s frames causes degradation of accuracy to about 2 mm based on the motion type.


Assuntos
Artefatos , Encéfalo/diagnóstico por imagem , Cabeça , Processamento de Imagem Assistida por Computador/métodos , Movimento (Física) , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada/métodos , Algoritmos , Simulação por Computador , Fluordesoxiglucose F18 , Humanos , Modelos Anatômicos , Compostos Radiofarmacêuticos
13.
Curr Med Res Opin ; 32(5): 807-16, 2016 05.
Artigo em Inglês | MEDLINE | ID: mdl-26700585

RESUMO

UNLABELLED: Aims The efficacy and safety of sodium-glucose linked transporters (SGLT2s) plus metformin and a sulfonylurea (MET + SU) for the treatment of type 2 diabetes mellitus (T2DM) in patients who fail to achieve glycemic control with MET + SU, relative to other triple therapies licensed in the EU, were estimated. Methods A systematic literature review and network meta-analysis (NMA) of randomized controlled trials (RCTs) involving anti-diabetes treatments added to MET + SU were conducted. RESULTS: Of 2236 abstracts identified through a systematic literature review, 30 RCTs published between 2003 and 2013 were included. RCTs ranged from 12 to 52 weeks in duration, included 28 to 1274 patients, were of parallel design, and most were open-label. Comparators included placebo (reference treatment), SGLT2 inhibitors, dipeptidyl peptidase-4 (DPP-4) inhibitors, thiazolidinediones (TZDs), alpha-glucosidase inhibitors (AGIs), meglitinides, glucagon-like peptide 1 (GLP-1) analogues, and basal, bolus, and biphasic insulin, all added on to MET + SU, as well as basal and biphasic insulin added to MET and monotherapy. The mean change (%) in HbA1c levels compared to placebo was -0.86 for SGLT2 inhibitors, -0.68 for DPP-4 inhibitors, -0.93 for TZDs, and -1.07 for GLP-1 analogues, respectively. Only SGLT2 inhibitors and GLP-1 analogues led to a weight loss (-1.71 kg and -1.14 kg, respectively) and decrease in systolic blood pressure (SBP; -3.73 mmHg and -2.90 mmHg, respectively), while all other treatments showed either an increase or no changes in weight or SBP. Conclusion SGLT2 inhibitors are at least as effective as other classes of antidiabetic agents at controlling HbA1c levels, while providing the additional benefits of weight loss and reducing SBP. Additionally, since the risk of hypoglycemia is similar or reduced with SGLT2 inhibitors, patients do not have to trade off efficacy for tolerability. Similar findings were observed for GLP-1 analogues.


Assuntos
Diabetes Mellitus Tipo 2/tratamento farmacológico , Hipoglicemiantes/administração & dosagem , Glicemia/análise , Inibidores da Dipeptidil Peptidase IV/uso terapêutico , Quimioterapia Combinada , Humanos , Hipoglicemia/sangue , Hipoglicemiantes/uso terapêutico , Metformina/uso terapêutico , Metanálise em Rede , Ensaios Clínicos Controlados Aleatórios como Assunto , Compostos de Sulfonilureia/uso terapêutico , Tiazolidinedionas/uso terapêutico
14.
Int J Clin Pract ; 68(11): 1309-17, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-25113816

RESUMO

AIMS: Examine the association between weight loss and adherence with glycaemic goal attainment in patients with inadequately controlled T2DM. MATERIALS AND METHODS: Patients ≥ 18 years with T2DM from a US integrated health system starting a new class of diabetes medication between 11/1/10 and 4/30/11 (index date) with baseline HbA1c ≥ 7.0% were included in this cohort study. Target HbA1c and weight change were defined at 6-months as HbA1c < 7.0% and ≥ 3% loss in body weight. Patient-reported medication adherence was assessed per the Medication Adherence Reporting Scale. Structural equation modelling was used to describe simultaneous associations between adherence, weight loss and HbA1c goal attainment. RESULTS: Inclusion criteria were met by 477 patients; mean (SD) age 59.1 (11.6) years; 50.9% were female; 30.4% were treatment naïve; baseline HbA1c 8.6% (1.6); weight 102.0 kg (23.0). Most patients (67.9%) reported being adherent to the index diabetes medication. At 6 months mean weight change was -1.3 (5.1) kg (p = 0.39); 28.1% had weight loss of ≥ 3%. Mean HbA1c change was -1.2% (1.8) (p< 0.001); 42.8% attained HbA1c goal. Adherent patients (OR 1.70; p = 0.02) and diabetes therapies that lead to weight loss (metformin, GLP-1) were associated with weight loss ≥ 3% (OR 2.96; p< 0.001). Weight loss (OR 3.60; p < 0.001) and adherence (OR 1.59; p < 0.001) were associated with HbA1c goal attainment. CONCLUSIONS: Weight loss ≥ 3% and medication adherence were associated with HbA1c goal attainment in T2DM; weight loss was a stronger predictor of goal attainment than medication adherence in this study population. It is important to consider weight-effect properties, in addition to patient-centric adherence counselling, when prescribing diabetes therapy.


Assuntos
Diabetes Mellitus Tipo 2/dietoterapia , Índice Glicêmico , Redução de Peso , Adulto , Idoso , Peso Corporal , Estudos de Coortes , Diabetes Mellitus Tipo 2/tratamento farmacológico , Diabetes Mellitus Tipo 2/reabilitação , Feminino , Peptídeo 1 Semelhante ao Glucagon/uso terapêutico , Humanos , Masculino , Adesão à Medicação , Pessoa de Meia-Idade , Compostos de Sulfonilureia/uso terapêutico
15.
Diabetes Obes Metab ; 16(11): 1165-73, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-25041462

RESUMO

AIMS: Clinical and observational studies have shown an increased risk of cardiovascular events and death associated with sulphonylureas versus metformin. However, it has never been determined whether this was due to the beneficial effects of metformin or detrimental effects of sulphonylureas. The objective of this study was therefore to compare all-cause mortality in diabetic patients treated first-line with either sulphonylurea or metformin monotherapy with that in matched individuals without diabetes. METHODS: We used retrospective observational data from the UK Clinical Practice Research Datalink (CPRD) from 2000. Subjects with type 2 diabetes who progressed to first-line treatment with metformin or sulphonylurea monotherapy were selected and matched to people without diabetes. Progression to all-cause mortality was compared using parametric survival models that included a range of relevant co-variables. RESULTS: We identified 78,241 subjects treated with metformin, 12,222 treated with sulphonylurea, and 90,463 matched subjects without diabetes. This resulted in a total, censored follow-up period of 503,384 years. There were 7498 deaths in total, representing unadjusted mortality rates of 14.4 and 15.2, and 50.9 and 28.7 deaths per 1000 person-years for metformin monotherapy and their matched controls, and sulphonylurea monotherapy and their matched controls, respectively. With reference to observed survival in diabetic patients initiated with metformin monotherapy [survival time ratio (STR) = 1.0], adjusted median survival time was 15% lower (STR = 0.85, 95% CI 0.81-0.90) in matched individuals without diabetes and 38% lower (0.62, 0.58-0.66) in diabetic patients treated with sulphonylurea monotherapy. CONCLUSIONS: Patients with type 2 diabetes initiated with metformin monotherapy had longer survival than did matched, non-diabetic controls. Those treated with sulphonylurea had markedly reduced survival compared with both matched controls and those receiving metformin monotherapy. This supports the position of metformin as first-line therapy and implies that metformin may confer benefit in non-diabetes. Sulphonylurea remains a concern.


Assuntos
Diabetes Mellitus Tipo 2/tratamento farmacológico , Hipoglicemiantes/efeitos adversos , Metformina/efeitos adversos , Infarto do Miocárdio/induzido quimicamente , Acidente Vascular Cerebral/induzido quimicamente , Compostos de Sulfonilureia/efeitos adversos , Contraindicações , Diabetes Mellitus Tipo 2/mortalidade , Esquema de Medicação , Feminino , Humanos , Hipoglicemiantes/administração & dosagem , Masculino , Metformina/administração & dosagem , Pessoa de Meia-Idade , Infarto do Miocárdio/mortalidade , Infarto do Miocárdio/prevenção & controle , Seleção de Pacientes , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Acidente Vascular Cerebral/mortalidade , Acidente Vascular Cerebral/prevenção & controle , Compostos de Sulfonilureia/administração & dosagem , Reino Unido/epidemiologia
16.
Diabetes Obes Metab ; 16(10): 977-83, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-24762119

RESUMO

AIMS: To compare the risk of major adverse cardiovascular events (MACE) and mortality for combination therapies with metformin and either sulphonylurea (SU) or dipeptidyl peptidase-4 inhibitor (DPP-4i). METHODS: Data were from the UK Clinical Practice Research Datalink (CPRD). Patients with type 2 diabetes were selected if initiated with combination therapies comprising metformin plus SU or DPP-4i 2007-2012. The co-primary endpoints were all-cause mortality and MACE (myocardial infarction or stroke). Times to endpoints were compared using Cox proportional hazards models. Additional analyses were performed on subsets matched directly on key characteristics and by propensity score. RESULTS: A total of 33 983 patients were prescribed SU and 7864 DPP-4i, and 5447 patients in each cohort could be matched directly and 6901 by propensity score. In the main analysis, there were 716 MACE events and 1217 deaths. Crude event rates for MACE were 11.3 events per 1000 person-years (pkpy) for SU, versus 5.3 pkpy for DPP-4i. For all-cause mortality, rates were 16.9 versus 7.3 pkpy, respectively. Following adjustment, there was a significant increase in the adjusted hazard ratio (aHR) for all-cause mortality in those exposed to SU across all analytical models: aHR = 1.357 (95% CI 1.076-1.710) for all subjects, 1.850 (1.245-2.749) directly matched and 1.497 (1.092-2.052) propensity-matched. For MACE, aHR was 1.710 (1.280-2.285) for all subjects, 1.323 (0.832-2.105) directly matched and 1.547 (1.076-2.225) propensity-matched. CONCLUSIONS: There was a reduction in all-cause mortality for patients treated with metformin combined with DPP-4i versus metformin plus SU, and a similar trend for MACE.


Assuntos
Diabetes Mellitus Tipo 2/tratamento farmacológico , Inibidores da Dipeptidil Peptidase IV/administração & dosagem , Hipoglicemiantes/administração & dosagem , Metformina/administração & dosagem , Infarto do Miocárdio/induzido quimicamente , Acidente Vascular Cerebral/induzido quimicamente , Compostos de Sulfonilureia/administração & dosagem , Glicemia/efeitos dos fármacos , Diabetes Mellitus Tipo 2/mortalidade , Inibidores da Dipeptidil Peptidase IV/efeitos adversos , Quimioterapia Combinada , Feminino , Hemoglobinas Glicadas/efeitos dos fármacos , Humanos , Hipoglicemiantes/efeitos adversos , Masculino , Metformina/efeitos adversos , Pessoa de Meia-Idade , Infarto do Miocárdio/mortalidade , Infarto do Miocárdio/prevenção & controle , Modelos de Riscos Proporcionais , Acidente Vascular Cerebral/mortalidade , Acidente Vascular Cerebral/prevenção & controle , Compostos de Sulfonilureia/efeitos adversos , Reino Unido/epidemiologia
17.
Diabetes Obes Metab ; 16(10): 957-62, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-24720708

RESUMO

AIMS: To evaluate the risk of all-cause mortality and major adverse cardiovascular events (MACE) for patients exposed to first-line monotherapy with sulphonylurea or metformin. METHODS: Data were from the Clinical Practice Research Datalink (CPRD). Patients with type 2 diabetes were selected if initiated with metformin or sulphonylurea monotherapy as their first-line glucose-lowering regimen 2000-2012. The primary endpoint was all-cause mortality; the secondary endpoint was MACE (myocardial infarction or stroke). Times to endpoints were compared using Cox proportional hazards models. Additional analyses were performed on subsets matched directly on key characteristics and by propensity score. RESULTS: In the main analysis, 76 811 patients were prescribed metformin monotherapy (mean follow-up 2.9 years) and 15 687 sulphonylurea monotherapy (mean follow-up 3.1 years). A total of 2604 patients were included in each arm of the directly matched cohorts and 8836 in the propensity-matched. With respect to all-cause mortality, using all three analytical approaches the hazard ratio (HR) was significantly increased for sulphonylurea compared with metformin: adjusted HR = 1.580 (95% CI 1.483-1.684) for the main analysis, 1.902 (1.733-2.088) for those matched on propensity score, and 1.272 (1.021-1.584) for the directly matched cohort analysis. For MACE, the respective HRs were 1.196 (1.090-1.313), 1.202 (1.001-1.442) and 0.814 (0.578-1.148), respectively. CONCLUSIONS: All-cause mortality was significantly increased in patients prescribed sulphonylurea compared with metformin monotherapy. Whilst residual confounding and confounding by indication may remain, this study indicates that first-line treatment with sulphonylurea monotherapy should be reconsidered.


Assuntos
Diabetes Mellitus Tipo 2/tratamento farmacológico , Hipoglicemiantes/administração & dosagem , Metformina/administração & dosagem , Infarto do Miocárdio/induzido quimicamente , Acidente Vascular Cerebral/induzido quimicamente , Compostos de Sulfonilureia/administração & dosagem , Contraindicações , Diabetes Mellitus Tipo 2/mortalidade , Diabetes Mellitus Tipo 2/fisiopatologia , Esquema de Medicação , Feminino , Seguimentos , Humanos , Hipoglicemiantes/efeitos adversos , Masculino , Metformina/efeitos adversos , Pessoa de Meia-Idade , Infarto do Miocárdio/mortalidade , Infarto do Miocárdio/prevenção & controle , Seleção de Pacientes , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Acidente Vascular Cerebral/mortalidade , Acidente Vascular Cerebral/prevenção & controle , Compostos de Sulfonilureia/efeitos adversos , Reino Unido/epidemiologia
18.
Curr Med Res Opin ; 30(7): 1267-73, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24588550

RESUMO

OBJECTIVE: The objective of this study was to estimate utility values for hypothetical health states that describe differences in weight and quality of life associated with type 2 diabetes mellitus (DM) from Canadians with type 2 DM. The impact on utility values was examined separately for participants with a body mass index (BMI) of 18 to less than 25 kg/m(2) ('healthy'), 25 to less than 30 ('overweight'), and 30 or more ('obese'). METHODS: The health state descriptions were modified from a published diabetes utility study. Health states included a base-case type 2 DM health state (at participants' current weight), and six health states where the weight and attendant quality of life impact varied (base case ±3%, ±5%, and ±7% weight). Utilities were elicited using the time trade-off technique. Linear regression modeling was used to estimate the utility increment or decrement associated with a one unit difference in BMI. RESULTS: Among 96 participants, the mean age was 55 years and 51% were men. The mean BMI was 32 kg/m(2) and 84% wanted to lose weight. The mean (SD) utility for the base-case state was 0.911 (0.013). Mean utilities (utility decrements) were 0.907 (-0.004), 0.865 (-0.046) and 0.806 (-0.105) for the health states describing an increased weight of 3%, 5% and 7%, respectively; and 0.923 (+0.012), 0.940 (+0.029) and 0.949 (+0.038) for the health states describing a decreased weight of 3%, 5% and 7%, respectively. For every increase of 1 kg/m(2) BMI there was an associated decrease in utility of 0.0472 (95% CI: 0.0375, 0.0569) and for every decrease of 1 kg/m(2) BMI there was an associated increase in utility of 0.0171 (95% CI: 0.0103, 0.0238). CONCLUSIONS: The preferences of Canadian patients with type 2 DM for diabetes-related health states varied according to the weight, and quality of life impact, associated with that health state. Increased weight had a greater effect on utilities than decreased weight.


Assuntos
Atitude Frente a Saúde , Peso Corporal , Diabetes Mellitus Tipo 2/psicologia , Indicadores Básicos de Saúde , Qualidade de Vida/psicologia , Adulto , Idoso , Índice de Massa Corporal , Canadá , Estudos Transversais , Diabetes Mellitus Tipo 2/complicações , Feminino , Humanos , Modelos Lineares , Masculino , Pessoa de Meia-Idade , Obesidade/complicações , Obesidade/psicologia , Sobrepeso/complicações , Sobrepeso/psicologia , Aumento de Peso , Redução de Peso
19.
J Assoc Physicians India ; 62(7 Suppl): 16-25, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25668933

RESUMO

Hyperglycaemia occurs frequently in critically-ill patients. Not only does it occur among patients with pre-existing diabetes mellitus but elevated blood glucose values during an acute illness can also be seen in previously glucose-tolerant individuals (stress hyperglycaemia). Numerous observational studies have shown an increase in morbidity and mortality in critically ill patients with hyperglycaemia. Interestingly, outcomes in individuals with stress hyperglycaemia are worse than that in critically ill hyperglycaemic patients with pre-existing diabetes. Proper management of hyperglycaemia has been shown to result in improved clinical outcomes. Critically ill patients with hyperglycaemia should primarily be managed with intravenous insulin infusion to allow dynamic adjustment of treatment to suit the rapid changes in blood glucose values in these patients. Currently, there are in existence a fair number of published protocols to administer intensive intravenous insulin therapy that range from the relatively simple to the fairly complex. Different management strategies have been proposed depending upon whether the critically ill hyperglycaemic patient is stationed in the emergency department, the medical intensive care unit (ICU), the surgical ICU or the coronary care unit. Moreover, the ideal target blood glucose value to maintain in this group of patients remains controversial. Keeping these issues in mind, a group of leading experts in the fields of diabetes and critical care extensively reviewed the literature and framed recommendations with special attention to clinical practice in India. The aim was to formulate recommendations which are based on sound evidence and yet are simple and easy to understand and implement across the ICU throughout the country. In the current recommendations, intensive intravenous insulin therapy has been suggested as the preferred mode of managing hyperglycaemia in patients admitted to critical care settings. The current recommendations suggest using a simple and similar protocol for managing hyperglycaemia in critically-ill patients irrespective of their location among the various critical care units in a hospital. Recommendations have also been made for transition from intravenous to subcutaneous administration of insulin when the patient is transferred out of the critical care setting. It is hoped that the current recommendations shall form the basis for the management of hyperglycaemia in critically ill patients across the country.


Assuntos
Cuidados Críticos/métodos , Estado Terminal/terapia , Diabetes Mellitus/tratamento farmacológico , Hiperglicemia/tratamento farmacológico , Hipoglicemiantes/uso terapêutico , Insulina/uso terapêutico , Administração Intravenosa , Humanos , Índia , Injeções Subcutâneas , Guias de Prática Clínica como Assunto
20.
J Anim Physiol Anim Nutr (Berl) ; 97(2): 315-21, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-22289079

RESUMO

To study the effect of vitamin E (VE), copper (Cu) and zinc (Zn) supplementation on the in vitro phagocytic activity (PA) and lymphocyte proliferation response (LPR) of blood neutrophils and lymphocytes, thirty Sahiwal pregnant cows (six in each group) in their late gestation at 30 days before the expected date of calving were selected from the NDRI experimental herd and supplemented with various micronutrients from 30 days before calving to 45 days after calving. Cows were supplemented individually with VE (1000 IU/cow/day), Cu (20 ppm/cow/day) and Zn (80 ppm/cow/day) and also with a combination of VE, Cu and Zn to study cumulative effect of all micronutrients. One group without any supplementation acted as a control. Blood neutrophils and lymphocytes were isolated and studied for their PA and LPR. Supplementation of micronutrients like VE, Cu, Zn and a combination of all these nutrients significantly (p < 0.01) increased the PA of experimental cows as compared to control (unsupplemented) cows during the pre-partum period. During post-partum, all the micronutrients (VE, Cu, Zn and their combination) showed a significant (p < 0.01) increase in the PA of experimental cows as compared to control cows. Of all the groups, significant (p < 0.01) and maximum PA was observed in the combination group followed by Zn-supplemented group during both the pre- and post-partum period. A significant (p < 0.01) increase in LPR of B lymphocytes was observed in combination-supplemented group during the pre-partum period and during both the pre- and post-partum period in the Cu-supplemented group.


Assuntos
Bovinos/fisiologia , Cobre/farmacologia , Linfócitos/efeitos dos fármacos , Fagocitose/efeitos dos fármacos , Vitamina E/farmacologia , Zinco/farmacologia , Ração Animal , Fenômenos Fisiológicos da Nutrição Animal , Animais , Proliferação de Células/efeitos dos fármacos , Cobre/administração & dosagem , Dieta/veterinária , Suplementos Nutricionais , Esquema de Medicação , Feminino , Linfócitos/fisiologia , Período Periparto , Gravidez , Vitamina E/administração & dosagem , Zinco/química
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