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1.
Ann Allergy Asthma Immunol ; 130(1): 93-99.e10, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-36191848

RESUMEN

BACKGROUND: Individuals with eczema may have substantial lifetime corticosteroid exposure, increasing the risk of corticosteroid-related side effects. OBJECTIVE: To conduct a patient survey evaluating corticosteroid exposure and its cumulative effects in individuals with eczema. METHODS: The multinational online survey was conducted between November 5, 2020, and January 11, 2021. Participants were aged 18 years or older and a patient (n = 1889) or a caregiver of a child (n = 271) diagnosed with having eczema by a medical professional. RESULTS: All participants reported using corticosteroids. Average duration of topical corticosteroid (TCS) use was 15.3 years in adults and 3.6 years in children; 75% used TCS 1 to 2 times a day and 50% applied TCS 15 to 30 days/mo. Frequency and duration could not be determined by varying prescription TCS potencies. Oral corticosteroid use was reported by 36% of the participants (23% for eczema), with a lifetime average of 8.4 courses in adults and 8.1 courses in children. Corticosteroids for non-eczema atopic conditions were reported by 49% of the participants. In participants using TCS, 83% of adults and 64% of children experienced worsening symptoms over time. Development of new symptoms and conditions increased with a greater number of corticosteroid treatments and longer duration of TCS use but may have been owing to eczema progression. Symptoms consistent with topical steroid withdrawal syndrome after TCS discontinuation were reported by many participants. CONCLUSION: Reported substantial corticosteroid exposure throughout their lifetime eczema experience placed participants at risk of negative outcomes. Corticosteroids are a critical component of eczema treatment for many patients. However, careful corticosteroid prescribing practices and monitoring are needed to avoid side effects. When possible, corticosteroid-sparing strategies should be explored.


Asunto(s)
Fármacos Dermatológicos , Eccema , Niño , Adulto , Humanos , Eccema/tratamiento farmacológico , Eccema/epidemiología , Corticoesteroides/efectos adversos , Administración Tópica , Glucocorticoides/uso terapéutico
2.
Ann Allergy Asthma Immunol ; 130(3): 392-396.e2, 2023 03.
Artículo en Inglés | MEDLINE | ID: mdl-36538973

RESUMEN

Atopic dermatitis (AD) and food allergies are more prevalent and more severe in people with skin of color than White individuals. The American College of Allergy, Asthma, and Immunology (ACAAI) sought to understand the effects of racial disparities among patients with skin of color with AD and food allergies. The ACAAI surveyed its members (N = 200 completed), conducted interviews with health care providers and advocacy leaders, and hosted a roundtable to explore the challenges of diagnosis and management of AD and food allergies in people with skin of color and to discuss potential solutions. Most of the survey respondents (68%) agreed that racial disparities make it difficult for people with skin of color to receive adequate treatment for AD and food allergies. The interviews and roundtable identified access to care, burden of costs, policies and infrastructure that limit access to safe foods and patient education, and inadequate research involving people with skin of color as obstacles to care. Proposed solutions included identifying ways to recruit more people with skin of color into clinical trials and medical school, educating health care providers about diagnosis and treating AD and food allergy in people with skin of color, improving access to safe foods, creating and disseminating culturally appropriate materials for patients, and working toward longer appointment times for patients who need them. Challenges in AD and food allergy in persons with skin of color were identified by the ACAAI members. Solutions to these challenges were proposed to inspire actions to mitigate racial disparities in AD and food allergy.


Asunto(s)
Asma , Dermatitis Atópica , Hipersensibilidad a los Alimentos , Humanos , Estados Unidos , Piel , Pruebas Cutáneas
3.
Emerg Infect Dis ; 28(2): 453-456, 2022 02.
Artículo en Inglés | MEDLINE | ID: mdl-35076006

RESUMEN

Transplacental transmission of Zika virus has been reported during all trimesters of pregnancy and might lead to central nervous system anomalies, including microcephaly. We report 3 cases of perinatal Zika infection identified during the epidemic in Colombia and provide detailed descriptions of clinical features, diagnosis, and neurodevelopmental outcome at 18 months of age (corrected).


Asunto(s)
Microcefalia , Complicaciones Infecciosas del Embarazo , Infección por el Virus Zika , Virus Zika , Colombia/epidemiología , Femenino , Humanos , Lactante , Transmisión Vertical de Enfermedad Infecciosa , Microcefalia/epidemiología , Microcefalia/etiología , Embarazo , Infección por el Virus Zika/diagnóstico , Infección por el Virus Zika/epidemiología
4.
Gastroenterology ; 160(4): 1106-1117.e3, 2021 03.
Artículo en Inglés | MEDLINE | ID: mdl-33220252

RESUMEN

BACKGROUND & AIMS: Helicobacter pylori eradication and endoscopic surveillance of gastric precancerous lesions are strategies to reduce gastric cancer (GC) risk. To our knowledge, this study is the longest prospective cohort of an H pylori eradication trial in a Hispanic population. METHODS: A total of 800 adults with precancerous lesions were randomized to anti-H pylori treatment or placebo. Gastric biopsy samples taken at baseline and 3, 6, 12, 16, and 20 years were assessed by our Correa histopathology score. A generalized linear mixed model with a participant-level random intercept was used to estimate the effect of H pylori status on the score over time. Logistic regression models were used to estimate progression by baseline diagnosis and to estimate GC risk by intestinal metaplasia (IM) subtype and anatomic location. RESULTS: Overall, 356 individuals completed 20 years of follow-up. Anti-H pylori therapy (intention-to-treat) reduced progression of the Correa score (odds ratio [OR], 0.59; 95% confidence interval [CI], 0.38-0.93). H pylori-negative status had a beneficial effect on the score over time (P = .036). Among individuals with IM (including indefinite for dysplasia) at baseline, incidence rates per 100 person-years were 1.09 (95% CI, 0.85-1.33) for low-grade/high-grade dysplasia and 0.14 (95% CI, 0.06-0.22) for GC. Incomplete-type (vs complete-type) IM at baseline presented higher GC risk (OR, 13.4; 95% CI, 1.8-103.8). Individuals with corpus (vs antrum-restricted) IM showed an OR of 2.1 (95% CI, 0.7-6.6) for GC. CONCLUSIONS: In a high-GC-risk Hispanic population, anti-H pylori therapy had a long-term beneficial effect against histologic progression. Incomplete IM is a strong predictor of GC risk.


Asunto(s)
Antibacterianos/uso terapéutico , Mucosa Gástrica/patología , Infecciones por Helicobacter/tratamiento farmacológico , Lesiones Precancerosas/epidemiología , Neoplasias Gástricas/prevención & control , Adulto , Anciano , Biopsia , Colombia/epidemiología , Progresión de la Enfermedad , Femenino , Estudios de Seguimiento , Mucosa Gástrica/diagnóstico por imagen , Mucosa Gástrica/microbiología , Gastroscopía/estadística & datos numéricos , Infecciones por Helicobacter/microbiología , Infecciones por Helicobacter/patología , Helicobacter pylori/aislamiento & purificación , Humanos , Incidencia , Masculino , Metaplasia/diagnóstico , Metaplasia/epidemiología , Metaplasia/microbiología , Metaplasia/patología , Persona de Mediana Edad , Lesiones Precancerosas/diagnóstico , Lesiones Precancerosas/microbiología , Lesiones Precancerosas/patología , Estudios Prospectivos , Factores de Riesgo , Neoplasias Gástricas/epidemiología , Neoplasias Gástricas/microbiología , Neoplasias Gástricas/patología , Resultado del Tratamiento
5.
Nat Chem Biol ; 16(1): 24-30, 2020 01.
Artículo en Inglés | MEDLINE | ID: mdl-31686030

RESUMEN

Lysostaphin is a bacteriolytic enzyme targeting peptidoglycan, the essential component of the bacterial cell envelope. It displays a very potent and specific activity toward staphylococci, including methicillin-resistant Staphylococcus aureus. Lysostaphin causes rapid cell lysis and disrupts biofilms, and is therefore a therapeutic agent of choice to eradicate staphylococcal infections. The C-terminal SH3b domain of lysostaphin recognizes peptidoglycans containing a pentaglycine crossbridge and has been proposed to drive the preferential digestion of staphylococcal cell walls. Here we elucidate the molecular mechanism underpinning recognition of staphylococcal peptidoglycan by the lysostaphin SH3b domain. We show that the pentaglycine crossbridge and the peptide stem are recognized by two independent binding sites located on opposite sides of the SH3b domain, thereby inducing a clustering of SH3b domains. We propose that this unusual binding mechanism allows synergistic and structurally dynamic recognition of S. aureus peptidoglycan and underpins the potent bacteriolytic activity of this enzyme.


Asunto(s)
Lisostafina/química , Peptidoglicano/química , Staphylococcus aureus/química , Bacteriólisis/efectos de los fármacos , Biopelículas , Pared Celular/química , Cromatografía Líquida de Alta Presión , Análisis Mutacional de ADN , Glicina/química , Ligandos , Espectroscopía de Resonancia Magnética , Mutagénesis Sitio-Dirigida , Péptidos/química , Unión Proteica , Dominios Proteicos , Proteínas Recombinantes/química , Dominios Homologos src
6.
An Acad Bras Cienc ; 92(2): e20190615, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32556053

RESUMEN

Hedychium coronarium J. Koening, belonging to Zingiberaceae family, is a perennial herb with fleshly aromatic rhizomes. There are no information about the antiplatelet properties of essential oils (EOs) from rhizomes (HCR) and leaves (HCL) of this herb, additionally, there are reports about the antibacterial activity of the Zingiberaceae species, however, no studies have been carried out in the Colombian Amazon Region. The EOs were characterized by GC-MS, the antiaggregant activity was assessed by ADP and Collagen as platelet agonist and the antibacterial activity against E. faecalis and S. aureus were evidenced by the determination of minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC). A high content of oxygenated monoterpenes were found in HCL essential oil (EO) and 20 compounds were identified in HCR EO. The HCL EO showed antiaggregant activity when collagen was used and HCR EO showed a concentration-dependent activity against ADP and collagen, meanwhile only the HCR EO showed antibacterial activity against E. faecalis and S. aureus.


Asunto(s)
Antibacterianos/farmacología , Enterococcus faecalis/efectos de los fármacos , Aceites Volátiles/farmacología , Inhibidores de Agregación Plaquetaria/farmacología , Rizoma/química , Staphylococcus aureus/efectos de los fármacos , Zingiberaceae/química , Antibacterianos/aislamiento & purificación , Cromatografía de Gases y Espectrometría de Masas , Pruebas de Sensibilidad Microbiana , Hojas de la Planta/química , Inhibidores de Agregación Plaquetaria/aislamiento & purificación , Rizoma/clasificación , Zingiberaceae/clasificación
7.
HIV Med ; 20(7): 429-438, 2019 08.
Artículo en Inglés | MEDLINE | ID: mdl-31006976

RESUMEN

OBJECTIVES: The aim of the review was to elucidate the adverse effects of chronic treatment with the main subclasses of highly active antiretroviral therapy (HAART). METHODS: A systematic review was carried out using the methods recommended in the Preferred Reporting Items for Systematic Review and Meta-analysis Protocols (PRISMA-P). Searches of articles in MEDLINE, SCIELO, Web of Science and LILACS were conducted from January to October 2018 based on the following descriptors and keywords: 'HIV' [AND]; 'AIDS' [OR]; 'HAART' [AND]; 'Highly Active Antiretroviral Therapy' [OR]; 'Adverse Effects' [AND]. All articles selected described the biochemical changes produced by, and the main adverse effects of, using one or more of the following HAART subclasses: nucleoside reverse transcriptase inhibitors (NRTIs), nonnucleoside reverse transcriptase inhibitors (NNRTIs), protease inhibitors (PIs) and other new drugs. The selected articles included patients living with HIV (PLWH) initiating or continuing any type of HAART. The results are presented qualitatively and discussed. RESULTS: Twenty-one articles found in the searches were selected for the review, and they included a total of 5626 participants. Seven of the studies investigated mainly NRTIs, three studies mainly NNRTIs, eight studies predominantly PIs, and three studies other antiretroviral drugs as the main treatment. The most common adverse effects on biochemical parameters were the emergence of anaemia for NRTIs as well as NNRTIs and PIs, and plasma lipid alterations caused by their prolonged use. In general, it was found that biological differences among individuals can cause differences in adverse effects, such as virological and treatment failure. CONCLUSIONS: One or more occurrences of adverse effects of the chronic utilization of drugs were found for all subclasses of HAART, and certain combinations of drugs from different subclasses were also found to be associated with adverse events.


Asunto(s)
Terapia Antirretroviral Altamente Activa/efectos adversos , Infecciones por VIH/tratamiento farmacológico , Fármacos Anti-VIH/efectos adversos , Fármacos Anti-VIH/uso terapéutico , Ensayos Clínicos como Asunto , Humanos , Inhibidores de Proteasas/efectos adversos , Inhibidores de Proteasas/uso terapéutico , Inhibidores de la Transcriptasa Inversa/efectos adversos , Inhibidores de la Transcriptasa Inversa/uso terapéutico , Resultado del Tratamiento
8.
Occup Environ Med ; 76(8): 554-559, 2019 08.
Artículo en Inglés | MEDLINE | ID: mdl-31300561

RESUMEN

OBJECTIVE: To determine the association between several whole-body vibration (WBV) exposure estimates and back pain-related work absence. METHODS: Exposures (based on the weighted daily root mean square acceleration, A(8); the daily vibration dose value, VDV(8); and the daily equivalent static compression dose, Sed(8)) of 2302 workers during 4 years were estimated using each worker's monthly vehicle operation records and WBV measurements from 11 different types of heavy equipment vehicles in a large coal mine. Company payroll data provided work absence during the concurrent 4 years of exposure. Cox regression models estimated the associations between the different WBV metrics and time to first work absence related to back pain. An adjusted R2 statistic provided a measure of model fit. RESULTS: All estimated metrics of WBV exposures were positively and significantly associated with back pain-related absence. HRs varied from 2.03 to 12.39 for every 0.21 m/s2 increase in the A(8)-based exposures; from 1.03 to 1.18 for every 1.72 m/s1.75 increase in VDV(8)-based exposures; and from 1.04 to 1.07 for every 0.06 MPa increase in Sed(8)-based exposures. Models using the estimated VDV(8) metric for the z axis fit the data best as measured by the R2 statistic. CONCLUSION: Higher WBV exposures were associated with back pain-related absences in this population, which appears after a few years of follow-up. Introducing controls to lower exposure levels may help reduce back pain-related work absences.


Asunto(s)
Dolor de Espalda/epidemiología , Exposición Profesional/efectos adversos , Ausencia por Enfermedad/estadística & datos numéricos , Vibración/efectos adversos , Adulto , Anciano , Minas de Carbón , Colombia/epidemiología , Humanos , Masculino , Persona de Mediana Edad , Vehículos a Motor , Enfermedades Profesionales/epidemiología
9.
Ann Allergy Asthma Immunol ; 118(1): 73-79, 2017 01.
Artículo en Inglés | MEDLINE | ID: mdl-27864093

RESUMEN

BACKGROUND: The evaluation of antibiotic immediate-type hypersensitivity is intricate because of nonstandardized skin testing and challenge method variability. OBJECTIVE: To determine the safety outcomes and risk factors for antibiotic challenge reactions in patients reporting a history of antibiotic immediate-type hypersensitivity. METHODS: A 5-year retrospective review of patients evaluated for immediate-type antibiotic allergy was conducted. Data analyzed included patient demographics, index reaction details, and outcomes of skin testing and challenges, classified as single-step or multistep. RESULTS: Antibiotic hypersensitivity history was identified in 211 patients: 78% to penicillins, 10% to fluoroquinolones, 7.6% to cephalosporins, and 3.8% to carbapenems. In total, 179 patients completed the challenges (median age 67 years, range 50-76 years, 56% women), and compared with nonchallenged patients, they reported nonanaphylactic (P < .001) and remote index (P = .003) reactions. Sixteen patients (8.9%) experienced challenge reactions (5 of 28 for single-step challenge, 11 of 151 for multistep challenge), and 11 of these patients had negative skin testing results before the challenge. Challenge-reactive patients were significantly younger (P = .007), more often women (P = .036), and had additional reported antibiotic allergies (P = .005). No correlation was detected between the reported index and observed challenge reaction severities (κ = -0.05, 95% confidence interval -0.34 to 0.24). Anaphylactic rates were similar during single-step and multistep challenges (3.6% vs 3.3%). CONCLUSION: In the present population, younger women with multiple reported antibiotic allergies were at greatest risk for challenge reactions. Negative skin testing results did not exclude reactions, and index severity was not predictive of challenge outcome. The multistep and full-dose methods demonstrated a comparable reaction risk for anaphylaxis.


Asunto(s)
Antibacterianos/efectos adversos , Hipersensibilidad a las Drogas/diagnóstico , Hipersensibilidad Inmediata/diagnóstico , Pruebas Cutáneas , Anciano , Antibacterianos/administración & dosificación , Femenino , Humanos , Masculino , Persona de Mediana Edad , Evaluación del Resultado de la Atención al Paciente , Reproducibilidad de los Resultados , Estudios Retrospectivos , Factores de Riesgo , Índice de Severidad de la Enfermedad , Pruebas Cutáneas/efectos adversos , Pruebas Cutáneas/métodos
10.
Am J Ind Med ; 60(6): 557-568, 2017 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-28485525

RESUMEN

BACKGROUND: Safety climate, a group-level measure of workers' perceptions regarding management's safety priorities, has been suggested as a key predictor of safety outcomes. However, its relationship with actual injury rates is inconsistent. We posit that safety climate may instead be a parallel outcome of workplace safety practices, rather than a determinant of workers' safety behaviors or outcomes. METHODS: Using a sample of 25 commercial construction companies in Colombia, selected by injury rate stratum (high, medium, low), we examined the relationship between workers' safety climate perceptions and safety management practices (SMPs) reported by safety officers. RESULTS: Workers' perceptions of safety climate were independent of their own company's implementation of SMPs, as measured here, and its injury rates. However, injury rates were negatively related to the implementation of SMPs. CONCLUSIONS: Safety management practices may be more important than workers' perceptions of safety climate as direct predictors of injury rates.


Asunto(s)
Industria de la Construcción/organización & administración , Traumatismos Ocupacionales/epidemiología , Cultura Organizacional , Administración de la Seguridad/métodos , Lugar de Trabajo/psicología , Accidentes de Trabajo/psicología , Accidentes de Trabajo/estadística & datos numéricos , Adulto , Colombia , Femenino , Humanos , Masculino , Traumatismos Ocupacionales/psicología , Percepción , Administración de la Seguridad/organización & administración , Encuestas y Cuestionarios , Lugar de Trabajo/organización & administración
11.
Allergy Asthma Proc ; 38(3): 177-183, 2017 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-28441987

RESUMEN

BACKGROUND: There has been growing interest in the potential for adverse immunologic reactions to metals in biomedical devices and increasing referrals for the evaluation and management of metal hypersensitivity reactions reported in orthopedic, cardiac, gynecologic, and dental implant devices. However, there are few studies that give evidence-based recommendations on how to evaluate this issue in our practices. METHODS: We reviewed reasonable evidence and expert opinion on biomedical device hypersensitivity and published guidelines on pre- and postimplantation evaluation of delayed hypersensitivity reactions in patients suspected of possible metal hypersensitivity to biomedical devices. RESULTS: There is consensus that routine preimplantation evaluation in individuals with no history of adverse cutaneous reactions to metals or a history of implant-related adverse events is not necessary. However, patients with a history of metal hypersensitivity of a magnitude sufficient to cause concern for the patient or health care provider may benefit from evaluation by patch testing (PT) before device implantation. Patients after implantation and with chronic unexplained implant failure or with dermatitis may benefit from patch test evaluation after other causes, such as infection and biomechanical issues, are ruled out. However, a positive metal patch test result does not prove symptom causality, and the decision regarding implant revision can only be made after a thorough discussion among the patient, the allergist or dermatologist, and the orthopedic surgeon. CONCLUSION: Consensus guidelines for the evaluation of hypersensitivity to biomedical devices can be used by the practicing physician while awaiting for the results of further investigations.


Asunto(s)
Hipersensibilidad/etiología , Metales/inmunología , Prótesis e Implantes/efectos adversos , Humanos , Hipersensibilidad/diagnóstico , Hipersensibilidad/prevención & control , Hipersensibilidad Tardía/etiología
12.
Curr Allergy Asthma Rep ; 16(6): 44, 2016 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-27207481

RESUMEN

Inhaled, intranasal, and cutaneous steroids are prescribed by physicians for a plethora of disease processes including asthma and rhinitis. While the high efficacy of this class of medication is well known, the wide range of adverse effects, both local and systemic, is not well elucidated. It is imperative to monitor total steroid burden in its varied forms as well as tracking for possible side effects that may be caused by a high cumulative dose of steroids. This review article highlights the adverse effects of different steroid modalities as well as suggests a monitoring tool to determine steroid totality and side effects.


Asunto(s)
Esteroides/uso terapéutico , Administración Cutánea , Administración por Inhalación , Administración Intranasal , Humanos
13.
Genomics ; 106(2): 76-82, 2015 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-26027909

RESUMEN

Friedreich's ataxia (FRDA) is the most common form of hereditary ataxia caused by recessive mutations in the FXN gene. Recent results have indicated the presence of different frataxin isoforms due to alternative gene expression mechanisms. Our previous studies demonstrated the advantages of using high-capacity herpes simplex virus type 1 (HSV-1) amplicon vectors containing the entire FXN genomic locus (iBAC-FXN) as a gene-delivery vehicle capable of ensuring physiologically-regulated and long-term persistence. Here we describe how expression from the 135 kb human FXN genomic locus produces the three frataxin isoforms both in cultured neuronal cells and also in vivo. Moreover, we also observed the correct expression of these frataxin isoforms in patient-derived cells after delivery of the iBAC-FXN. These results lend further support to the potential use of HSV-1 vectors containing entire genomic loci whose expression is mediated by complex transcriptional and posttranscriptional mechanisms for gene therapy applications.


Asunto(s)
Ataxia de Friedreich/genética , Proteínas de Unión a Hierro/genética , Animales , Línea Celular Tumoral , Células Cultivadas , Cerebelo/metabolismo , Cromosomas Artificiales Bacterianos , Sitios Genéticos , Vectores Genéticos , Genoma Humano , Herpesvirus Humano 1/genética , Humanos , Proteínas de Unión a Hierro/metabolismo , Masculino , Ratones , Ratones Endogámicos C57BL , Isoformas de Proteínas/genética , Isoformas de Proteínas/metabolismo , Frataxina
14.
Pediatr Dermatol ; 32(6): 779-85, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26212605

RESUMEN

Nickel is the leading cause of allergic contact dermatitis (ACD) from early childhood through adolescence. Studies have shown that skin piercings and other nickel-laden exposures can trigger the onset of nickel ACD in those who are susceptible. Nickel ACD causes a vast amount of cutaneous disease in children. Cases of nickel ACD in children have been reported in peer-reviewed literature from 28 states. Common items that contain inciting nickel include jewelry, coins, zippers, belts, tools, toys, chair studs, cases for cell phones and tablets, and dental appliances. The diagnosis of nickel ACD has been routinely confirmed by patch testing in children older than 6 months suspected of ACD from nickel. Unlike in Europe, there are no mandatory restrictions legislated for nickel exposure in the United States. Denmark has demonstrated that regulation of the nickel content in metals can lower the risk of ACD and the associated health care-related costs that arise from excess nickel exposure. To further awareness, this article reviews the prominent role of nickel in pediatric skin disease in the United States. It discusses the need for a campaign by caretakers to reduce nickel-related morbidity. Lastly, it promotes the model of European legislation as a successful intervention in the prevention of nickel ACD.


Asunto(s)
Salud Infantil , Dermatitis Alérgica por Contacto/epidemiología , Dermatitis Alérgica por Contacto/etiología , Níquel/efectos adversos , Prevención Primaria/organización & administración , Adolescente , Distribución por Edad , Niño , Preescolar , Dermatitis Alérgica por Contacto/fisiopatología , Dermatitis Alérgica por Contacto/prevención & control , Femenino , Humanos , Masculino , Níquel/inmunología , Pruebas del Parche/métodos , Pronóstico , Medición de Riesgo , Índice de Severidad de la Enfermedad , Estados Unidos
15.
J Insect Sci ; 14: 112, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-25205137

RESUMEN

In nature, females of several animal taxa exhibit considerable variation in their mating system, and this variation involves different balances of costs (e.g., energetic, reproductive) and benefits (e.g., increased net reproductive rate of the female, increased longevity). Many studies have focused on discovering the potential advantages and disadvantages that females could have when increasing their mating rate and the possible evolutionary consequences that may result. Butterflies and moths are an ideal study system because it is easy to determine and to manipulate experimentally their mating frequency. In this study, the effect of continuous availability of different numbers of males (1, 2, 4, 8) on female mating rate and fitness components was estimated by comparing the number of spermatophores in the corpus bursa (an estimate of the number of copulations, but not of the number males involved in these copulations), female longevity, lifetime number of laid eggs (fecundity), and proportion of hatching eggs (fertility) in the moth Sangalopsis veliterna Druce (Lepidoptera: Geometridae). The results showed that there were no significant differences in either fertility or fecundity when treatments were compared, but longevity and in some cases fecundity increased when females had several matings.


Asunto(s)
Fertilidad/fisiología , Mariposas Nocturnas/fisiología , Conducta Sexual Animal , Animales , Copulación , Femenino , Longevidad , Masculino
16.
Cardiorenal Med ; 14(1): 473-482, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39134016

RESUMEN

INTRODUCTION: There is limited evidence as to the effect of sex on the outcomes of patients admitted for ST-elevation myocardial infarction (STEMI) who have a concomitant diagnosis of chronic kidney disease (CKD) and end-stage renal disease (ESRD). We aimed to determine if there are differences in the outcomes between males and females in these patient populations. METHODS: Data were obtained from the National Inpatient Sample database and patients were selected using the International Classification of Diseases, Ninth and Tenth Revision (ICD-9 and -10) codes. Hospitalizations for patients with CKD who had STEMI from 2012 to 2020 were included. The primary outcome of interest was in-hospital mortality. Secondary outcomes evaluated included ischemic stroke, major bleeding complications, pressor requirement, permanent pacemaker implantation, percutaneous coronary intervention, coronary artery bypass grafting, surgery, pericardiocentesis, mechanical circulatory support, and mechanical ventilation. RESULTS: A total of 1,283,255 STEMI patients without CKD, 158,715 STEMI patients with CKD, and 22,690 STEMI patients with ESRD were identified and analyzed. Among patients with STEMI and CKD, females demonstrated higher in-hospital mortality compared to male counterparts (16.7% vs. 12.7%, aOR = 1.13, 95% CI: 1.05-1.21, p < 0.01). While there was no sex difference in the in-hospital mortality among STEMI patients with ESRD, female patients in this group were less likely to receive coronary artery bypass grafting and mechanical circulatory support. CONCLUSION: Increased in-hospital mortality rates were shown for females admitted for STEMI with CKD. Among patients with ESRD who had STEMI, females were less likely to receive coronary artery bypass grafting and mechanical circulatory support. Further research needs to be conducted to better explain this said difference in outcomes.


Asunto(s)
Bases de Datos Factuales , Mortalidad Hospitalaria , Insuficiencia Renal Crónica , Infarto del Miocardio con Elevación del ST , Humanos , Femenino , Masculino , Anciano , Persona de Mediana Edad , Infarto del Miocardio con Elevación del ST/complicaciones , Infarto del Miocardio con Elevación del ST/mortalidad , Infarto del Miocardio con Elevación del ST/terapia , Infarto del Miocardio con Elevación del ST/epidemiología , Infarto del Miocardio con Elevación del ST/cirugía , Factores Sexuales , Estados Unidos/epidemiología , Insuficiencia Renal Crónica/complicaciones , Insuficiencia Renal Crónica/terapia , Insuficiencia Renal Crónica/epidemiología , Fallo Renal Crónico/complicaciones , Fallo Renal Crónico/terapia , Fallo Renal Crónico/mortalidad , Hospitalización/estadística & datos numéricos , Anciano de 80 o más Años , Estudios Retrospectivos
17.
Cardiorenal Med ; 14(1): 416-425, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38934134

RESUMEN

INTRODUCTION: Studies exploring the effectiveness and safety of left atrial appendage occlusion (LAAO) in patients with chronic kidney disease (CKD) are limited. METHODS: We utilized the National Inpatient Sample (NIS) to identify hospitalizations for LAAO from 2016 to 2020 and further identified cases with concomitant CKD. The primary outcome was mortality, and secondary outcomes were cerebrovascular accidents, major bleeding, vasopressor requirements, percutaneous coronary intervention, cardiac arrest, acute respiratory failure, transfusion, length of stay (LOS), and total hospital charges. Multivariable logistic regression was performed to further adjust for covariates. RESULTS: A total of 89,309 LAAO procedures from 2016 to 2020 were identified, of which 21,559 (24.1%) reported concomitant CKD, with males comprising the majority (62.2%). An increasing trend in LAAO procedures was seen from 2.24 to 13.9 per 10,000 patients from 2016 to 2020. Despite patients with CKD having a higher rate of most comorbidities, there was no difference in mortality (non-CKD vs. CKD, 0.07% vs. 0.42%; aOR: 1.3, 95% CI: 0.4-4.4, p = 0.686) and complications for CKD and non-CKD patients, while CKD patients had longer LOS and higher total hospital charge. No significant sex differences in outcomes among CKD patients were observed except for a longer LOS in females. CONCLUSION: Despite generally having more comorbidities, outcomes of patients with CKD following LAAO are similar to those without CKD, suggesting that LAAO can be offered as a safe option for the treatment of atrial fibrillation in eligible patients with CKD.


Asunto(s)
Apéndice Atrial , Fibrilación Atrial , Bases de Datos Factuales , Insuficiencia Renal Crónica , Humanos , Masculino , Femenino , Apéndice Atrial/cirugía , Fibrilación Atrial/complicaciones , Fibrilación Atrial/epidemiología , Fibrilación Atrial/cirugía , Insuficiencia Renal Crónica/complicaciones , Insuficiencia Renal Crónica/epidemiología , Anciano , Estados Unidos/epidemiología , Persona de Mediana Edad , Anciano de 80 o más Años , Resultado del Tratamiento , Tiempo de Internación/estadística & datos numéricos , Estudios Retrospectivos , Complicaciones Posoperatorias/epidemiología , Complicaciones Posoperatorias/etiología
19.
Open Vet J ; 13(8): 955-964, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-37701666

RESUMEN

Background: The left coronary artery (LCA) in the bovines is more developed than the right. Aim: The objective of the study is to describe the bovine coronary system from a morphological point of view, including the morphometry and its distribution. Methods: Arciform suture with 2.0 silk was applied around the sinus orifice and coronary ostium and a number 14 catheter was installed, to perfuse semi-synthetic polyester resin, consisting of a mixture of 85% GP40L palatal with 15% styrene with red color mineral. Results: The average weight of 28 bovine hearts used in our study was 1.534.1 kg. The right coronary artery had a proximal caliber of 5 +/- 0.9 mm. The LCA caliber and length were 9.4 +/- 1.2 and 18.3 +/- 4.8 mm, respectively. This artery was divided into two branches in 85.7% of the cases and trifurcated in 14.3%. The paraconal interventricular branch (PIB) ended more frequently in the apex (46.4%), and its proximal caliber was 6.4 +/- 1.4 mm. The left circumflex branch ended in 82.1% in the subsinusal interventricular sulcus, and its proximal caliber was 5.9 +/- 1.2 mm. The proximal calibers of the PIB and the left circumflex branch did not present statistically significant differences (p = 0.137). The sinoatrial branch presented a dual origin (right and LCA) in 46.4% of the cases and a single origin from the LCA in 53.6% of the samples. In the evaluated hearts, left coronary dominance was observed in most cases (96.4%). Their presence of anastomosis between the branches of the coronary arteries was observed in 57.1% of cases. Conclusion: The presence of a myocardial bridge was found in six hearts (21.4%). In bovines, a high percentage of anastomosis was found, a protective factor in obstruction of the coronary arterial branches.


Asunto(s)
Vasos Coronarios , Miocardio , Humanos , Animales , Bovinos , Resinas Sintéticas , Estireno
20.
BMC Genomics ; 13: 151, 2012 Apr 25.
Artículo en Inglés | MEDLINE | ID: mdl-22533342

RESUMEN

BACKGROUND: Physalis peruviana commonly known as Cape gooseberry is a member of the Solanaceae family that has an increasing popularity due to its nutritional and medicinal values. A broad range of genomic tools is available for other Solanaceae, including tomato and potato. However, limited genomic resources are currently available for Cape gooseberry. RESULTS: We report the generation of a total of 652,614 P. peruviana Expressed Sequence Tags (ESTs), using 454 GS FLX Titanium technology. ESTs, with an average length of 371 bp, were obtained from a normalized leaf cDNA library prepared using a Colombian commercial variety. De novo assembling was performed to generate a collection of 24,014 isotigs and 110,921 singletons, with an average length of 1,638 bp and 354 bp, respectively. Functional annotation was performed using NCBI's BLAST tools and Blast2GO, which identified putative functions for 21,191 assembled sequences, including gene families involved in all the major biological processes and molecular functions as well as defense response and amino acid metabolism pathways. Gene model predictions in P. peruviana were obtained by using the genomes of Solanum lycopersicum (tomato) and Solanum tuberosum (potato). We predict 9,436 P. peruviana sequences with multiple-exon models and conserved intron positions with respect to the potato and tomato genomes. Additionally, to study species diversity we developed 5,971 SSR markers from assembled ESTs. CONCLUSIONS: We present the first comprehensive analysis of the Physalis peruviana leaf transcriptome, which will provide valuable resources for development of genetic tools in the species. Assembled transcripts with gene models could serve as potential candidates for marker discovery with a variety of applications including: functional diversity, conservation and improvement to increase productivity and fruit quality. P. peruviana was estimated to be phylogenetically branched out before the divergence of five other Solanaceae family members, S. lycopersicum, S. tuberosum, Capsicum spp, S. melongena and Petunia spp.


Asunto(s)
Modelos Genéticos , Physalis/genética , Transcriptoma , Bases de Datos Genéticas , Etiquetas de Secuencia Expresada , Biblioteca de Genes , Genoma de Planta , Solanum lycopersicum/genética , Repeticiones de Microsatélite , Filogenia , Physalis/clasificación , Hojas de la Planta/genética , Análisis de Secuencia de ADN , Solanum tuberosum/genética
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