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1.
Public Health ; 232: 38-44, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38733959

RESUMEN

BACKGROUND: While a major goal of community-based participatory research (CBPR) is to improve community health; it is unclear how to measure longstanding success of CBPR. OBJECTIVE: We sought to determine the impact of ongoing CBPR on cardiometabolic health of participating communities, including in people not directly participating in research. METHODS: We used linear mixed-effects modelling with electronic medical records from 2002 to 2012 from the Yukon-Kuskokwim Health Corporation, which provides health care to all Alaska Native people in southwestern Alaska, to compare rates of change in cardiometabolic risk factors between communities that did and did not participate in ongoing CBPR beginning in 2003. RESULTS: We analysed 1,262,035 medical records from 12,402 individuals from 10 study and 38 control communities. Blood pressure declined faster in study than in control communities: systolic blood pressure (0.04 mmHg/year; 95% confidence interval [CI]: 0.01, 0.08); diastolic blood pressure (DBP) (0.07 mmHg/year; 95% CI: 0.04, 0.09). Body mass index increased 0.04 units/year faster in study communities than in control communities (95% CI: 0.03, 0.05). More study visits were associated with faster reduction of DBP and triglyceride levels in study communities. CONCLUSIONS: Ongoing CBPR may improve overall cardiometabolic health in communities, perhaps by increasing engagement in health and advocacy.


Asunto(s)
Investigación Participativa Basada en la Comunidad , Registros Electrónicos de Salud , Humanos , Masculino , Femenino , Persona de Mediana Edad , Adulto , Registros Electrónicos de Salud/estadística & datos numéricos , Alaska/epidemiología , Presión Sanguínea , Factores de Riesgo Cardiometabólico , Nativos Alasqueños/estadística & datos numéricos , Índice de Masa Corporal , Enfermedades Cardiovasculares/epidemiología , Enfermedades Cardiovasculares/prevención & control , Anciano , Adulto Joven
2.
Acta Neurol Scand ; 137(1): 133-141, 2018 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-28975602

RESUMEN

OBJECTIVE: Worldwide, the highest frequencies of APOL1-associated kidney variants are found in indigenous West Africans among whom small vessel disease (SVD) ischemic stroke is the most common stroke phenotype. The objective of this study was to investigate the association and effect sizes of 23 selected SNPs in 14 genes of relevance, including the APOL1 G1 variants, with the occurrence of SVD ischemic stroke among indigenous West African participants in the Stroke Investigative Research and Education Network (SIREN) Study. MATERIALS AND METHODS: Cases were consecutively recruited consenting adults (aged 18 years or older) with neuroimaging-confirmed first clinical stroke. Stroke-free controls were ascertained using a locally validated version of the Questionnaire for Verifying Stroke-Free Status (QVSFS). Logistic regression models adjusting for known vascular risk factors were fitted to assess the associations of the 23 SNPs in rigorously phenotyped cases (N = 154) of SVD ischemic stroke and stroke-free (N = 483) controls. RESULTS: Apolipoprotein L1 (APOL1) rs73885319 (OR = 1.52; CI: 1.09-2.13, P-value = .013), rs2383207 in CDKN2A/CDKN2B (OR = 3.08; CI: 1.15-8.26, P -value = .026) and rs2107595 (OR = 1.70; CI: 1.12-2.60, P-value = .014) and rs28688791 (OR = 1.52; CI: 1.03-2.26, P-value = .036) in HDAC9 gene were associated with SVD stroke at 0.05 significance level. Polymorphisms in other genes did not show significant associations. CONCLUSION: This is the first report of a specific association of APOL1 with a stroke subtype. Further research is needed to confirm these initial findings and deepen understanding of the genetics of stroke in people of African ancestry with possible implications for other ancestries as all humans originated from Africa.


Asunto(s)
Apolipoproteína L1/genética , Predisposición Genética a la Enfermedad/genética , Accidente Cerebrovascular/genética , Adulto , Anciano , Población Negra/genética , Isquemia Encefálica/genética , Inhibidor p15 de las Quinasas Dependientes de la Ciclina/genética , Inhibidor p16 de la Quinasa Dependiente de Ciclina , Inhibidor p18 de las Quinasas Dependientes de la Ciclina/genética , Femenino , Genotipo , Histona Desacetilasas/genética , Humanos , Masculino , Persona de Mediana Edad , Polimorfismo de Nucleótido Simple , Proteínas Represoras/genética , Factores de Riesgo
3.
Nutr Metab Cardiovasc Dis ; 27(3): 225-233, 2017 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-28139377

RESUMEN

BACKGROUND AND AIMS: Adiponectin, an adipose-secreted protein that has been linked to insulin sensitivity, plasma lipids, and inflammatory patterns, is an established biomarker for metabolic health. Despite clinical relevance and high heritability, the determinants of plasma adiponectin levels remain poorly understood. METHODS AND RESULTS: We conducted the first epigenome-wide cross-sectional study of adiponectin levels using methylation data on 368,051 cytosine-phosphate-guanine (CpG) sites in CD4+ T-cells from the Genetics of Lipid Lowering Drugs and Diet Network (GOLDN, n = 991). We fit linear mixed models, adjusting for age, sex, study site, T-cell purity, and family. We have identified a positive association (regression coefficient ± SE = 0.01 ± 0.001, P = 3.4 × 10-13) between plasma adiponectin levels and methylation of a CpG site in CPT1A, a key player in fatty acid metabolism. The association was replicated (n = 474, P = 0.0009) in whole blood samples from the Amish participants of the Heredity and Phenotype Intervention (HAPI) Heart Study as well as White (n = 592, P = 0.0005) but not Black (n = 243, P = 0.18) participants of the Bogalusa Heart Study (BHS). The association remained significant upon adjusting for BMI and smoking in GOLDN and HAPI but not BHS. We also identified associations between methylation loci in RNF145 and UFM1 and plasma adiponectin in GOLDN and White BHS participants, although the association was not robust to adjustment for BMI or smoking. CONCLUSION: We have identified and replicated associations between several biologically plausible loci and plasma adiponectin. These findings support the importance of epigenetic processes in metabolic traits, laying the groundwork for future translational applications.


Asunto(s)
Adiponectina/sangre , Carnitina O-Palmitoiltransferasa/genética , Metilación de ADN , Epigénesis Genética , Adulto , Negro o Afroamericano/genética , Islas de CpG , Estudios Transversales , Epigenómica/métodos , Femenino , Estudios de Asociación Genética , Genotipo , Humanos , Masculino , Persona de Mediana Edad , Fenotipo , Proteínas/genética , Estados Unidos/epidemiología , Población Blanca/genética
4.
Int J Obes (Lond) ; 38(5): 724-9, 2014 May.
Artículo en Inglés | MEDLINE | ID: mdl-23900445

RESUMEN

OBJECTIVE: Obesity, which is frequently associated with diabetes, hypertension and cardiovascular diseases, is primarily the result of a net excess of caloric intake over energy expenditure. Human obesity is highly heritable, but the specific genes mediating susceptibility in non-syndromic obesity remain unclear. We tested candidate genes in pathways related to food intake and energy expenditure for association with body mass index (BMI). METHODS: We reanalyzed 355 common genetic variants of 30 candidate genes in seven molecular pathways related to obesity in 1982 unrelated European Americans from the New York Cancer Project. Data were analyzed by using a Bayesian hierarchical generalized linear model. The BMIs were log-transformed and then adjusted for covariates, including age, age(2), gender and diabetes status. The single-nucleotide polymorphisms (SNPs) were modeled as additive effects. RESULTS: With the stipulated adjustments, nine SNPs in eight genes were significantly associated with BMI: ghrelin (GHRL; rs35683), agouti-related peptide (AGRP; rs5030980), carboxypeptidase E (CPE; rs1946816 and rs4481204), glucagon-like peptide-1 receptor (GLP1R; rs2268641), serotonin receptors (HTR2A; rs912127), neuropeptide Y receptor (NPY5R;Y5R1c52), suppressor of cytokine signaling 3 (SOCS3; rs4969170) and signal transducer and activator of transcription 3 (STAT3; rs4796793). We also found a gender-by-SNP interaction (rs1745837 in HTR2A), which indicated that variants in the gene HTR2A had a stronger association with BMI in males. In addition, NPY1R was detected as having a significant gene effect even though none of the SNPs in this gene was significant. CONCLUSION: Variations in genes AGRP, CPE, GHRL, GLP1R, HTR2A, NPY1R, NPY5R, SOCS3 and STAT3 showed modest associations with BMI in European Americans. The pathways in which these genes participate regulate energy intake, and thus these associations are mechanistically plausible in this context.


Asunto(s)
Composición Corporal/genética , Predisposición Genética a la Enfermedad/genética , Obesidad/genética , Población Blanca/genética , Adulto , Proteína Relacionada con Agouti , Índice de Masa Corporal , Carbazoles , Ingestión de Alimentos/genética , Metabolismo Energético/genética , Femenino , Frecuencia de los Genes , Predisposición Genética a la Enfermedad/epidemiología , Ghrelina , Receptor del Péptido 1 Similar al Glucagón , Humanos , Masculino , Morfolinas , New York/epidemiología , Obesidad/epidemiología , Polimorfismo de Nucleótido Simple/genética , Receptores de Glucagón , Receptores de Neuropéptido Y , Factor de Transcripción STAT3 , Proteína 3 Supresora de la Señalización de Citocinas , Proteínas Supresoras de la Señalización de Citocinas , Estados Unidos/epidemiología
5.
Pharmacogenomics J ; 13(4): 312-7, 2013 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-22547144

RESUMEN

As a peroxisome proliferator-activated receptor alpha (PPARα) agonist, fenofibrate favorably modulates dyslipidemia and inflammation markers, which are associated with cardiovascular risk. To determine whether variation in the PPARα receptor gene was associated with lipid and inflammatory marker response, we conducted a 3-week trial of fenofibrate in 861 men and women. Mixed linear models that controlled for age and sex, as well as family pedigree and study center, were constructed using single-nucleotide polymorphisms (SNPs) in the PPARα gene as predictors and changes in fasting triglycerides (TGs), cholesterol and inflammatory markers as outcomes. Significant associations with low-density cholesterol and interleukin-2 (P<0.001) responses to fenofibrate were found. Although there were suggestive associations with tumor necrosis factor-alpha and TG responses (P<0.05), these did not survive the correction for multiple testing. We conclude that variants in the PPARα gene may contribute to future pharmacogenomic paradigms seeking to predict fenofibrate responders from both an anti-dyslipidemic and anti-inflammatory perspective.


Asunto(s)
LDL-Colesterol/genética , Fenofibrato/administración & dosificación , Lípidos/genética , PPAR alfa/genética , Adulto , Anciano , LDL-Colesterol/sangre , Femenino , Estudios de Asociación Genética , Humanos , Lípidos/sangre , Masculino , Persona de Mediana Edad , Polimorfismo de Nucleótido Simple , Triglicéridos/sangre , Triglicéridos/genética , Factor de Necrosis Tumoral alfa/genética
6.
Nutr Metab Cardiovasc Dis ; 23(11): 1154-8, 2013 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-23484911

RESUMEN

BACKGROUND AND AIMS: In vitro studies suggest that low density lipoprotein receptor-related protein 1 (LRP1) plays a role in the secondary uptake of chylomicrons. In addition, in vivo studies using LRP-1 knockout mice show these animals exhibit delayed chylomicron clearance. Whether this is true in humans is unknown. We aimed to determine whether genetic variants in LRP-1 are associated with postprandial chylomicron uptake in humans given an oral fat challenge. METHODS AND RESULTS: As many as 817 men and women (mean age +/- standard deviation = 48.4 +/- 16.4 years) forming the study population for the Genetics of Lipid Lowering Drugs Network (GOLDN) study ingested an oral fat load of 700 kilocalories per m² of body surface area at 83% fat, after an 8-h fast. Chylomicrons were measured by nuclear resonance spectroscopy (NMR) at fasting, and 3.5 and 6 h after the meal. 26 Single nucleotide polymorphisms (SNPs) in the LRP-1 gene were genotyped on the Affymetrix 6.0 array. Chylomicrons were, as expected, zero at fasting. Mixed linear models adjusted for age, sex, study site and pedigree tested for associations between LRP-1 SNPs and changes in chylomicron concentrations 3.5-6 h. A gene-based test across all 26 SNPs was conducted which corrected for the linkage disequilibrium (LD) between SNPs. 11 LRP-1 SNPs were significantly associated with the change in chylomicron concentration correction for multiple testing (Q < 0.05). The subsequent gene-based test, was also significant (P = 0.01). CONCLUSION: These results require replication but strongly indicate the role of LRP1 in postprandial lipoprotein uptake and/or clearance.


Asunto(s)
Quilomicrones/metabolismo , Dieta Alta en Grasa/efectos adversos , Grasas de la Dieta/metabolismo , Absorción Intestinal , Proteína 1 Relacionada con Receptor de Lipoproteína de Baja Densidad/genética , Comidas , Polimorfismo de Nucleótido Simple , Adulto , Alelos , Quilomicrones/sangre , Femenino , Estudios de Asociación Genética , Humanos , Desequilibrio de Ligamiento , Proteína 1 Relacionada con Receptor de Lipoproteína de Baja Densidad/metabolismo , Espectroscopía de Resonancia Magnética , Masculino , Persona de Mediana Edad , Minnesota , Análisis de Secuencia por Matrices de Oligonucleótidos , Periodo Posprandial , Utah
7.
Nutr Metab Cardiovasc Dis ; 23(10): 987-94, 2013 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-23149075

RESUMEN

BACKGROUND AND AIMS: Adiponectin is an adipose-secreted protein that has been linked to changes in insulin sensitivity, high-density lipoprotein cholesterol levels, and inflammatory patterns. Although fenofibrate therapy can raise adiponectin levels, treatment response is heterogeneous and heritable, suggesting a role for genetic mediators. This is the first genome-wide association study of fenofibrate effects on circulating adiponectin. METHODS AND RESULTS: Plasma adiponectin was measured in participants of the Genetics of Lipid Lowering Drugs and Diet Network (n = 793) before and after a 3-week daily treatment with 160 mg of fenofibrate. Associations between variants on the Affymetrix Genome-Wide Human SNP Array 6.0 and adiponectin were assessed using mixed linear models, adjusted for age, sex, site, and family. We observed a statistically significant (P = 5 × 10⁻8) association between rs2384207 in 12q24, a region previously linked to several metabolic traits, and the fenofibrate-induced change in circulating adiponectin. Additionally, our genome-wide analysis of baseline adiponectin levels replicated the previously reported association with CDH13 and suggested novel associations with markers near the PCK1, ZBP1, TMEM18, and SCUBE1 genes. The findings from the single marker tests were corroborated in gene-based analyses. Biological pathway analyses suggested a borderline significant association between the EGF receptor signaling pathway and baseline adiponectin levels. CONCLUSIONS: We present preliminary evidence linking several biologically relevant genetic variants to adiponectin levels at baseline and in response to fenofibrate therapy. Our findings provide support for fine-mapping of the 12q24 region to investigate the shared biological mechanisms underlying levels of circulating adiponectin and susceptibility to metabolic disease.


Asunto(s)
Adiponectina/sangre , Cadherinas/genética , Cromosomas Humanos Par 12 , Resistencia a Medicamentos , Fenofibrato/farmacología , Hipolipemiantes/farmacología , Polimorfismo de Nucleótido Simple , Adiponectina/metabolismo , Tejido Adiposo Blanco/efectos de los fármacos , Tejido Adiposo Blanco/metabolismo , Adulto , Cadherinas/metabolismo , Femenino , Frecuencia de los Genes , Estudio de Asociación del Genoma Completo , Humanos , Desequilibrio de Ligamiento , Masculino , Persona de Mediana Edad , Minnesota , Análisis de Secuencia por Matrices de Oligonucleótidos , Hermanos , Utah
8.
Res Vet Sci ; 139: 121-126, 2021 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-34298285

RESUMEN

The objective of this study was to estimate the prevalence of failure of passive transfer of immunity (FPTI) in dairy calves in the south-west region of Western Australia herds. A cross-sectional study was conducted in 26/140 dairy farms and serum samples were collected from 495 healthy 2-7 day-old calves. A radial immunodiffusion (RID) test was used to determine the concentration of serum IgG and calves were classified as having FPTI if the IgG concentration was less than 10 mg/mL. Estimation of FPTI was also assessed using two indirect methods using serum total protein (STP) and a brix refractometer. The estimated prevalence of FPTI was found to be 8.7% (43 calves out of 495) by RID with the concentration of IgG ranging between 0 and 6.2 mg/ml. The STP was found to vary from 46 to 96 mg/mL and using a cut-off point of 55 mg/mL the calf level prevalence was estimated as 7.1% (33 calves). Using the brix refractometer, the prevalence was found to be 13.1% (65 calves) with the refractometer reading ranging 6-14% of IgG. In the present study there was no association between calf-level factors (age, sex and breed) and FPTI. There was a higher correlation of the RID test results and the STP results compared to the RID and brix refractometer results. It is concluded that the prevalence of FPTI in dairy calves in the south-west region of Western Australia is low (8.7%) and the brix refractometer is not a reliable indirect method for determining passive transfer of immunity to calves.


Asunto(s)
Bovinos , Calostro , Inmunización Pasiva , Inmunoglobulina G , Animales , Animales Recién Nacidos , Bovinos/inmunología , Estudios Transversales , Femenino , Inmunización Pasiva/veterinaria , Embarazo , Prevalencia , Australia Occidental/epidemiología
9.
Indian J Public Health ; 52(1): 33-6, 2008.
Artículo en Inglés | MEDLINE | ID: mdl-18700719

RESUMEN

The concentration of Terramycin and Furazolidone residues in broiler meat following their subtherapeutic use in the ration of the birds were detected as 296 ng/g, 174 ng/g, 40 ng/g, 60 ng/g and 124 ng/ml in kidney, liver, thigh muscle, breast muscle and serum for Terramycin and 270 ng/g 160 ng/g and 88 ng/ml in kidney, liver and serum for Furazolidone. One week of withdrawal period from the antibiotic in feed/water was sufficient to render the meat free from residues.


Asunto(s)
Alimentación Animal/efectos adversos , Contaminación de Alimentos/análisis , Furazolidona , Oxitetraciclina/análisis , Aves de Corral , Animales , Residuos de Medicamentos/análisis , Humanos , India
10.
Indian J Public Health ; 51(2): 97-100, 2007.
Artículo en Inglés | MEDLINE | ID: mdl-18240469

RESUMEN

OBJECTIVE: To assess if Staphylococcus aureus is transmitted between man and animals & vice-versa. METHODS: Staphylococcus aureus belonging to biotype C (bovine origin) were isolated from nares and hands of workers on six dairy farms of Assam and Meghalaya. The cows on the farms had a high rate of prevalence of mastitis caused by the same biotype of S. aureus. Three strains of S. aureus biotype A (human origin) were isolated from mastitis milk samples from cows on one of these farms, in which one of the workers was having cuteneous lesions (crusty abscess) and one strain of S. aureus biotype A was isolated from a swab sample collected from an abscess on the skin of the worker. RESULTS: It has been revealed that all the members of the workers family were suffering from a similar type of cuteneous infection, indicating that it was a case of impetigo. The antibiotic susceptibility pattern of all the three biotype A strains from bovine origin was identical to that of the biotype A strains isolated from the worker. The percentage of resistance to 12 commonly used therapeutic antimicrobial agents was higher among the biotype C strains from human origin than the biotype C strains from bovine origin. Several strains from cattle and human origins showed identical antimicrobial susceptibility patterns against the tested agents.


Asunto(s)
Enfermedades de los Bovinos/transmisión , Industria Lechera , Infecciones Estafilocócicas/veterinaria , Animales , Antibacterianos/uso terapéutico , Técnicas de Tipificación Bacteriana , Bovinos , Enfermedades de los Bovinos/epidemiología , Enfermedades de los Bovinos/microbiología , Farmacorresistencia Bacteriana Múltiple , Humanos , India/epidemiología , Pruebas de Sensibilidad Microbiana , Prevalencia , Infecciones Estafilocócicas/epidemiología , Infecciones Estafilocócicas/transmisión , Zoonosis
11.
J Mass Spectrom ; 51(7): ii-iii, 2016 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-27434812

RESUMEN

Metabolomics is perhaps the most challenging of the -omics fields, given the complexity of an organism's metabolome and the rapid rate at which it changes. When one sets out to study metabolism there are numerous dynamic variables that can influence metabolism that must be considered. Recognizing the experimental challenges confronting researchers who undertake metabolism studies, workshops like the one at University of Alabama at Birmingham have been established to offer instructional guidance. A summary of the UAB course training materials is being published as a two-part Special Feature Tutorial. In this month's Part I the authors discuss details of good experimental design and sample collection and handling. In an upcoming Part II, the authors discuss in detail the various aspects of data analysis.

12.
J Hum Hypertens ; 30(9): 549-54, 2016 09.
Artículo en Inglés | MEDLINE | ID: mdl-26791477

RESUMEN

African Americans have the highest prevalence of hypertension in the United States. Blood pressure (BP) control is important to reduce cardiovascular disease-related morbidity and mortality in this ethnic group. Genetic variants have been found to be associated with BP response to treatment. Previous pharmacogenetic studies of BP response to treatment in African Americans suffer limitations of small sample size as well as a limited number of candidate genes, and often focused on one antihypertensive treatment. Using 1131 African-American treatment-naive participants from the Genetics of Hypertension Associated Treatment Study, we examined whether variants in 35 candidate genes might modulate BP response to four different antihypertensive medications, including an angiotensin-converting enzyme inhibitor (lisinopril), a calcium channel blocker (amlodipine), and an a-adrenergic blocker (doxazosin) as compared with a thiazide diuretic (chlorthalidone) after 6 months of follow-up. Several suggestive gene by treatment interactions were identified. For example, among participants with two minor alleles of renin rs6681776, diastolic BP response was much improved on doxazosin compared with chlorthalidone (on average -9.49 mm Hg vs -1.70 mm Hg) (P=0.007). Although several suggestive loci were identified, none of the findings passed significance criteria after correction for multiple testing. Given the impact of hypertension and its sequelae in this population, this research highlights the potential for genetic factors to contribute to BP response to treatment. Continued concerted research efforts focused on genetics are needed to improve treatment response in this high-risk group.


Asunto(s)
Antihipertensivos/uso terapéutico , Negro o Afroamericano/genética , Presión Sanguínea/efectos de los fármacos , Presión Sanguínea/genética , Hipertensión/tratamiento farmacológico , Hipertensión/genética , Variantes Farmacogenómicas , Antagonistas de Receptores Adrenérgicos alfa 1/uso terapéutico , Anciano , Inhibidores de la Enzima Convertidora de Angiotensina/uso terapéutico , Bloqueadores de los Canales de Calcio/uso terapéutico , Diuréticos/uso terapéutico , Método Doble Ciego , Femenino , Predisposición Genética a la Enfermedad , Humanos , Hipertensión/etnología , Hipertensión/fisiopatología , Masculino , Persona de Mediana Edad , América del Norte/epidemiología , Farmacogenética , Fenotipo , Sistema Renina-Angiotensina/efectos de los fármacos , Sistema Renina-Angiotensina/genética , Resultado del Tratamiento
13.
Clin Exp Rheumatol ; 21(5 Suppl 31): S138-45, 2003.
Artículo en Inglés | MEDLINE | ID: mdl-14969066

RESUMEN

African-Americans have been under-represented in genetic studies of rheumatoid arthritis (RA) susceptibility and severity. Genetic and non-genetic factors influencing the radiographic severity of RA and its response to treatment are poorly understood, particularly in African-Americans. The Consortium for the Longitudinal Evaluation of African-Americans with early RA (CLEAR) Registry, a collaborative effort among four institutions in the southeast USA, will hopefully provide a useful resource to study these issues.


Asunto(s)
Artritis Reumatoide/etnología , Artritis Reumatoide/genética , Negro o Afroamericano/genética , Sistema de Registros , Adulto , Distribución por Edad , Anciano , Artritis Reumatoide/diagnóstico , Actitud Frente a la Salud/etnología , Femenino , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Dimensión del Dolor , Pronóstico , Rango del Movimiento Articular , Medición de Riesgo , Índice de Severidad de la Enfermedad , Distribución por Sexo , Estados Unidos/epidemiología
14.
Natl Med J India ; 9(5): 211-4, 1996.
Artículo en Inglés | MEDLINE | ID: mdl-8937058

RESUMEN

BACKGROUND: Retinopathy of prematurity (RoP) has become more common in developed countries with an improvement in survival of very premature infants. Though previously rare, it is likely to emerge as a major problem in India because of improving outcome of 'at-risk' preterm infants. METHODS: In a prospective study we estimated the incidence of RoP among at-risk neonates in a tertiary care unit. Infants with birth-weights of < 1500 g, gestation < 35 weeks and preterm neonates who required supplemental oxygen for > 24 hours were subjected to periodic ophthalmological evaluation for detection of RoP until full retinal vascularization occurred. RESULTS: Sixty-six eligible infants completed the full protocol during the 15-month study period. The incidence of RoP was 20% in the cohort and 27% among the very low birth-weight neonates. The incidence of threshold RoP was 7% in the cohort. The occurrence of RoP was inversely related to the gestation and birth-weight. RoP typically developed at the post-conceptional age of 32-35 weeks. Blood transfusion and clinical sepsis emerged as independent risk factors of RoP on step-wise logistic regression analysis. Cryotherapy undertaken in 5 cases (9 eyes) led to amelioration of the changes of RoP. CONCLUSION: The incidence of RoP in our neonates was lower than that reported from other centres. Blood transfusion and clinical sepsis are risk factors for RoP in our newborn infants.


Asunto(s)
Retinopatía de la Prematuridad/epidemiología , Humanos , India/epidemiología , Recién Nacido , Estudios Prospectivos , Retinopatía de la Prematuridad/complicaciones , Factores de Riesgo
15.
Indian J Ophthalmol ; 39(4): 174-5, 1991.
Artículo en Inglés | MEDLINE | ID: mdl-1810880

RESUMEN

Juvenile diabetics have severe loss of beta cell function and require replacement therapy with insulin. Insulin antigenicity can produce anti-insulin antibodies resulting in allergic reactions and insulin resistance. The role of insulin-anti-insulin antibody complexes in the development and progress of chronic diabetic complications like microangiopathy is not very clear. In the present study, there was statistically a significant trend of higher insulin antibody binding levels in IDDM patients who developed retinopathy. Though there was a trend of higher insulin antibody in IDDM patients with retinopathy, there was no association between insulin antibody and HLA antigen which some authors have reported.


Asunto(s)
Diabetes Mellitus Tipo 1/sangre , Retinopatía Diabética/sangre , Anticuerpos Insulínicos/sangre , Retinopatía Diabética/etiología , Antígenos HLA-B/sangre , Prueba de Histocompatibilidad , Humanos , Radioinmunoensayo
16.
Indian J Ophthalmol ; 37(1): 2-4, 1989.
Artículo en Inglés | MEDLINE | ID: mdl-2807495

RESUMEN

Thirty five patients with insulin dependent diabetes mellitus (IDDM) were investigated for development of retinal microangiopathy by fluorescein angiography. HLA typing (A,B.C antigens) was done as a genetic marker. There was no statistically significant difference in the frequency of HLA antigens between patients without retinopathy (Gr.I) and with retinopathy (Gr.II) Frequency of various HLA antigens did not differ significantly in the mild and severe retinopathy groups or in comparison with controls. HLA B8 was significantly over represented in the patients of IDDM as a single group (GrI + II) when compared with controls (26% vs 8%). HLA profile was not a predictor of either the development or the severity of retinopathy in IDDM.


Asunto(s)
Retinopatía Diabética/genética , Marcadores Genéticos/análisis , Adolescente , Adulto , Femenino , Humanos , Masculino
17.
J Clin Diagn Res ; 7(5): 845-8, 2013 May.
Artículo en Inglés | MEDLINE | ID: mdl-23814725

RESUMEN

INTRODUCTION: WHONET is a freely downloadable, Windows-based database software which is used for the management and analysis of microbiology data, with a special focus on the analysis of antimicrobial susceptibility test results. Urinary Tract Infections (UTI) are a common medical problem and they are responsible for notable morbidity among young and sexually active women. OBJECTIVES: The major objective of this study was the utilization and application of the WHONET program for the Antimicrobial Resistance (AMR) surveillance of uropathogens. METHODS: A total of 3209 urine samples were collected from patients who visited Manipal Teaching Hospital with a clinical suspicion of UTI, during December 2010 to July 2011. The isolation and characterization of the isolates were done by conventional methods. Antimicrobial Susceptibility Testing (AST) was performed by Kirby Bauer's disc diffusion method. The data entry and analysis were done by using the WHONET 5.6 software. RESULTS: Out of the 3209 specimens, 497 bacterial isolates were obtained and they were subjected to AST. Escherichia coli (66.2%) was the commonest bacterial isolate, followed by Enterococcus species (9.3%), Staphylococcus aureus (5.0%), and Klebsiella pneumoniae (4.2%). Among the gram-negative enteric bacilli, a high prevalence of resistance was observed against ampicillin and ciprofloxacin. The gram negative nonfermenters exhibited a high degree of resistance to ceftazidime. Staphylococcus species. showed a moderately high resistance to co-trimoxazole. One isolate was Vancomycin Resistant Enterococci (VRE). CONCLUSION: This study, a first of its kind which was done in Nepal, was carried out by using the WHONET software to monitor, analyze and share the antimicrobial susceptibility data at various levels. This study was also aimed at building a surveillance network in Nepal, with the National Public Health Laboratory, Nepal, acting as a nodal centre. This would help in the formulation of antibiotic policies and in identifying hospital and community outbreaks at the nodal centre, as well as in sharing information with the clinicians at the local level.

18.
Front Genet ; 3: 92, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-22654895

RESUMEN

RATIONALE: Left ventricular hypertrophy (LVH) is a heritable predictor of cardiovascular disease, particularly in blacks. OBJECTIVE: Determine the feasibility of combining evidence from two distinct but complementary experimental approaches to identify novel genetic predictors of increased LV mass. METHODS: Whole-exome sequencing (WES) was conducted in seven African-American sibling trios ascertained on high average familial LV mass indexed to height (LVMHT) using Illumina HiSeq technology. Identified missense or nonsense (MS/NS) mutations were examined for association with LVMHT using linear mixed models adjusted for age, sex, body weight, and familial relationship. To functionally assess WES findings, human induced pluripotent stem cell-derived cardiomyocytes (induced pluripotent stem cell-CM) were stimulated to induce hypertrophy; mRNA sequencing (RNA-seq) was used to determine gene expression differences associated with hypertrophy onset. Statistically significant findings under both experimental approaches identified LVH candidate genes. Candidate genes were further prioritized by seven supportive criteria that included additional association tests (two criteria), regional linkage evidence in the larger HyperGEN cohort (one criterion), and publically available gene and variant based annotations (four criteria). RESULTS: WES reads covered 91% of the target capture region (of size 37.2 MB) with an average coverage of 65×. WES identified 31,426 MS/NS mutations among the 21 individuals. A total of 295 MS/NS variants in 265 genes were associated with LVMHT with q-value <0.25. Of the 265 WES genes, 44 were differentially expressed (P < 0.05) in hypertrophied cells. Among the 44 candidate genes identified, 5, including HLA-B, HTT, MTSS1, SLC5A12, and THBS1, met 3 of 7 supporting criteria. THBS1 encodes an adhesive glycoprotein that promotes matrix preservation in pressure-overload LVH. THBS1 gene expression was 34% higher in hypertrophied cells (P = 0.0003) and a predicted conserved and damaging NS variant in exon 13 (A2099G) was significantly associated with LVHMT (P = 4 × 10(-6)). CONCLUSION: Combining evidence from cutting-edge genetic and cellular experiments can enable identification of novel LVH risk loci.

19.
Lipid Insights ; 2011(4): 7-15, 2011 Aug 23.
Artículo en Inglés | MEDLINE | ID: mdl-21912485

RESUMEN

We aimed to investigate the relationship between dietary saturated fat on fasting triglyceride (TG) and cholesterol levels, and any mediation of this relationship by dietary carbohydrate intake. Men and women in the NHLBI Genetics of Lipid-Lowering Drugs and Diet Network (GOLDN) study (n = 1036, mean age ± SD = 49 ± 16 y) were included. Mixed linear models were run with saturated fat as a predictor variable and fasting TG, very low density lipoprotein cholesterol (VLDL-C), low density cholesterol (LDL-C) and high density cholesterol (HDL-C) as separate outcome variables. Subsequent models were run which included dietary carbohydrate as a predictor variable, and an interaction term between saturated fat and carbohydrate. All models controlled for age, sex, BMI, blood pressure and dietary covariates. In models that included only saturated fat as a predictor, saturated fat did not show significant associations with fasting lipids. When carbohydrate intake and an interaction term between carbohydrates and saturated fat intake was included, carbohydrate intake did not associate with lipids, but there was an inverse relationship between saturated fat intake and VLDL-C (P = 0.01) with a significant interaction (P = 0.01) between saturated fat and carbohydrate with regard to fasting VLDL-C concentrations. Similar results were observed for fasting TG levels. We conclude that, when controlling for carbohydrate intake, higher saturated fat was associated with lower VLDL-C and TGs. This was not the case at higher intakes of carbohydrate. This has important implications for dietary advice aimed at reducing TG and VLDL-C levels.

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