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OBJECTIVE: Poor glycemic control during COVID-19 hospitalization is associated with higher mortality. However, the association between long-term glycemic control, as reflected by the glycosylated hemoglobin (HbA1c) and outcomes has yet to be clarified, with some studies reporting no association. The aim of this study is to determine the association between HbA1c and in-hospital mortality in patients with COVID-19. METHODS: Pubmed, Embase, and Web of Science databases were searched for studies examining the association between HbA1c level and in-hospital COVID-19 mortality. Random-effects meta-analysis was performed. Heterogeneity was assessed using the I2 statistic. Publication bias was assessed using funnel plots. RESULTS: Among 4142 results, 22 studies were included in the final analysis with a total of 11 220 patients. Lower Hba1c was associated with lower in-hospital mortality [odds ratio (OR), 0.53; 95% CI, 0.37-0.76; I2 81%], in using HbA1c as a dichotomous variable. When only patients with diabetes were included in the analysis, the association remained statistically significant (OR, 0.67; 95% CI, 0.47-0.96). In the subgroup analysis, the association remained statistically significant in studies using as cutoff the HbA1c value of 6.5% (OR, 0.34; 95% CI, 0.15-0.77) and 7% (OR, 0.54; 95% CI 0.32-0.90), but not with greater HbA1c cutoff values; 7.5% and ≥8%. In studies using HbA1C as a continuous variable, HbA1c level did not have a statistically significant association with in-hospital mortality, either in univariate or multivariate analyses. CONCLUSION: A better glycemic control prior to hospitalization, as reflected by lower HbA1c, is associated with lower in-hospital mortality in patients with COVID-19.
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COVID-19 , Diabetes Mellitus , Hemoglobinas Glicadas , Humanos , COVID-19/mortalidade , COVID-19/fisiopatologia , Diabetes Mellitus/epidemiologia , Hemoglobinas Glicadas/análise , Mortalidade Hospitalar , HiperglicemiaRESUMO
PURPOSE OF REVIEW: Hypertriglyceridemia-induced acute pancreatitis (HTG-AP) should be considered in all cases of acute pancreatitis and triglyceride levels measured early, so that appropriate early and long-term treatment can be initiated. RECENT FINDINGS: In most cases of HTG-AP, conservative management (nothing by mouth, intravenous fluid resuscitation and analgesia) is sufficient to achieve triglyceride levels less than 500âmg/dl. Intravenous insulin and plasmapheresis are sometimes used, although prospective studies showing clinical benefits are lacking. Pharmacological management of hypertriglyceridemia (HTG) should start early and target triglyceride levels of less than 500âmg/dl to reduce the risk or recurrent acute pancreatitis. In addition to currently used fenofibrate and omega-3 fatty acids, several novel agents are being studied for long-term treatment of HTG. These emerging therapies focus mainly on modifying the action of lipoprotein lipase (LPL) through inhibition of apolipoprotein CIII and angiopoietin-like protein 3. Dietary modifications and avoidance of secondary factors that worsen triglyceride levels should also be pursued. In some cases of HTG-AP, genetic testing may help personalize management and improve outcomes. SUMMARY: Patients with HTG-AP require acute and long-term management of HTG with the goal of reducing and maintaining triglyceride levels to less than 500âmg/dl.
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Hipertrigliceridemia , Pancreatite , Humanos , Pancreatite/tratamento farmacológico , Pancreatite/etiologia , Doença Aguda , Estudos Prospectivos , Hipertrigliceridemia/complicações , Hipertrigliceridemia/tratamento farmacológico , Triglicerídeos/uso terapêuticoRESUMO
PURPOSE: We undertook a study to evaluate the current state of pedagogy on antiracism, including barriers to implementation and strengths of existing curricula, in undergraduate medical education (UME) and graduate medical education (GME) programs in US academic health centers. METHODS: We conducted a cross-sectional study with an exploratory qualitative approach using semistructured interviews. Participants were leaders of UME and GME programs at 5 institutions participating in the Academic Units for Primary Care Training and Enhancement program and 6 affiliated sites from November 2021 to April 2022. RESULTS: A total of 29 program leaders from the 11 academic health centers participated in this study. Three participants from 2 institutions reported the implementation of robust, intentional, and longitudinal antiracism curricula. Nine participants from 7 institutions described race and antiracism-related topics integrated into health equity curricula. Only 9 participants reported having "adequately trained" faculty. Participants mentioned individual, systemic, and structural barriers to implementing antiracism-related training in medical education such as institutional inertia and insufficient resources. Fear related to introducing an antiracism curriculum and undervaluing of this curriculum relative to other content were identified. Through learners and faculty feedback, antiracism content was evaluated and included in UME and GME curricula. Most participants identified learners as a stronger voice for transformation than faculty; antiracism content was mainly included in health equity curricula. CONCLUSIONS: Inclusion of antiracism in medical education requires intentional training, focused institutional policies, enhanced foundational awareness of the impact of racism on patients and communities, and changes at the level of institutions and accreditation bodies.
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Antirracismo , Educação Médica , Humanos , Estudos Transversais , Currículo , Educação de Pós-Graduação em MedicinaRESUMO
Racism has implicit and explicit manifestations that perpetuate disparities and negatively influence patient-centered health outcomes. Subsequently, a list of action items was provided to assist medical schools in becoming anti-racist institutions. A deep subject matter knowledge, beliefs, and reflections were a driving force for the management of medical schools or faculty members involved in undergraduate and postgraduate medical education to move forward toward inclusion of anti-racism in traditional medical curriculum or adapting existing training modules on diversity, equity, and inclusion. This paper proposes twelve practical and specific tips for implementing and teaching anti-racism in medical education. These twelve tips elaborate on the proposed actions for leaders in undergraduate and postgraduate medical education, valuable for designing future curricula and educational activities.
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Antirracismo , Educação Médica , Humanos , Currículo , Docentes , EstudantesRESUMO
OBJECTIVE: The aim of the current study is to compare Seniors in the Community: Risk Evaluation for Eating and Nutrition, version II (SCREEN II) and Mini Nutritional Assessment - Short Form (MNA-SF), where each is used to identify nutritional risk prevalence among community-dwelling people aged 65 years and above in Bosnia and Herzegovina. DESIGN: A cross-sectional study. Nutritional risk assessed using the nutritionist's risk rating, anthropometric measurements, functional indicators, cognitive parameters, SCREEN II and MNA-SF. SETTING: The municipalities of Foca, East Sarajevo and Bijeljina, Bosnia and Herzegovina. PARTICIPANTS: Eight hundred twenty-one community-dwelling individuals aged ≥65 years. RESULTS: The prevalence of high nutritional risk per nutritionist's risk rating, SCREEN II and MNA-SF was 26, 60, and 7 %, respectively. With the nutritionist's rating score ≥5 as the criterion, the MNA-SF cut-off point of ≤11 (indicating any possible risk) had poor sensitivity (55·7 %), specificity (46·6 %) and AUC (0·563; P = 0·024). When the criterion of >7 was applied, good sensitivity (95·3 %) and specificity (88·9 %) were obtained for the MNA-SF cut-off score of ≤7. AUC for this comparison was 0·742 (considered fair). Cut-off points of <54 (AUC = 0·816) and <50 (AUC = 0·881) for SCREEN II (indicating moderate to high risk) corresponded with good sensitivity (82·2 %; 80·9 %) and fair specificity (72·1 %; 75·0 %). CONCLUSION: MNA-SF may have a limited role in nutritional risk screening among community-dwelling seniors in Bosnia and Herzegovina. SCREEN II has promising results in regard to validity, but further studies are warranted.
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Desnutrição , Avaliação Nutricional , Idoso , Bósnia e Herzegóvina , Estudos Transversais , Avaliação Geriátrica , Humanos , Vida Independente , Estado NutricionalRESUMO
Following publication of the original article [1], the authors opted to correct the name of co-author Amra Zalihic from Zahilic to Zalihic. The original article has been corrected.
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BACKGROUND: The wars that ravaged the former Socialist Federal Republic of Yugoslavia in the 1990's resulted in the near destruction of the healthcare system, including education of medical students and the training of specialist physicians. In the latter stages of the war, inspired by Family Medicine programs in countries such as Canada, plans to rebuild a new system founded on a strong primary care model emerged. Over the next fifteen years, the Queen's University Family Medicine Development Program in Bosnia and Herzegovina played an instrumental role in rebuilding the primary care system through educational initiatives at the undergraduate, residency, Masters, PhD, and continuing professional development levels. Changes were supported by new laws and regulations to insure sustainability. This study revisited Bosnia and Herzegovina (B-H) 8-years after the end of the program to explore the impact of initiatives through understanding the perspectives and experiences of individuals at all levels of the primary care system from students, deans of medical schools, Family Medicine residents, practicing physicians, Health Center Directors and Association Leaders. METHODS: Qualitative exploratory design using purposeful sampling. Semi-structured interviews and focus groups with key informants were conducted in English or with an interpreter as needed and audiotaped. Transcripts and field notes were analyzed using an interpretative phenomenological approach to identify major themes and subthemes. RESULTS: Overall, 118 participants were interviewed. Three major themes and 9 subthemes were identified including (1) The Development of Family Medicine Education, (subthemes: establishment of departments of family medicine, undergraduate medical curriculum change), (2) Family Medicine as a Discipline (Family Medicine specialization, academic development, and Family Medicine Associations), and (3) Health Care System Issues (continuity of care, comprehensiveness of care, practice organization and health human resources). CONCLUSIONS: Despite the impact of years of war and the challenges of a complex and unstable postwar environment, initiatives introduced by the Queen's Program succeeded in establishing sustainable changes, allowing Family Medicine in B-H to continue to adapt without abandoning its strong foundations. Despite the success of the program, the undervaluing of Primary Care from a human resource and health finance perspective presents ongoing threats to the system.
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Medicina de Família e Comunidade/organização & administração , Atenção Primária à Saúde/organização & administração , Desenvolvimento de Programas , Conflitos Armados , Bósnia e Herzegóvina , Currículo , Atenção à Saúde , Educação de Pós-Graduação em Medicina , Educação de Graduação em Medicina , Docentes de Medicina , Medicina de Família e Comunidade/educação , Grupos Focais , Humanos , Internato e Residência , Médicos de Família , Pesquisa Qualitativa , Estudantes de MedicinaRESUMO
INTRODUCTION: Numerous challenges and barriers have emerged since changing the minimum requirement for those interested in pursuing employment as a nurse in Europe to a baccalaureate degree. To analyze the perceptions of baccalaureate nurses regarding the current status of their profession and the issues involved in implementing the prerequisite of earning a baccalaureate degree in order to practice as nurses in Bosnia and Herzegovina. METHODS: A series of six focus groups were undertaken with 49 baccalaureate nurses employed in primary health care centers and regional hospitals. The focus groups were recorded and transcribed verbatim. Data collected were analyzed using conventional content analysis approach. RESULTS: Baccalaureate nurses report dissatisfaction with their level of autonomy and anxiety over their limited career opportunities. They expressed concern over difficult working conditions, inadequate financial compensation, and ongoing resistance by physicians as the primary barriers to implementing advanced nursing education and professional reform. The global image of the nursing profession is negative. CONCLUSION: The perception is that revising the legal framework regarding nursing qualifications, duties, and standards will result in reform necessary to positively affect the during profession. Progress toward implementing reform of the nursing profession is negligible. Addressing barriers such as work environment, lack of job classification, fair payment, autonomy, and interdisciplinary collaboration toward the competences of baccalaureate nurse is essential if successful reform is to occur.
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Atitude do Pessoal de Saúde , Recursos Humanos de Enfermagem/psicologia , Adulto , Bósnia e Herzegóvina , Bacharelado em Enfermagem , Feminino , Grupos Focais , Humanos , Masculino , Motivação , Papel do Profissional de EnfermagemRESUMO
This article describes the process of competence-based curriculum development in nursing education at Western Balkan (WB) universities. Nursing education in the WB has been noncompliant with the standard educational approaches of the European Union's directive on regulated professions. The overall aim of the TEMPUS project "Competency-Based Curriculum Reform in Nursing and Caring in Western Balkan Universities" was to bring curricular reform for bachelor's nursing education in the WB region in line with competence-based education and professional standards to demonstrate compliance with all member countries of the European Union.
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Educação Baseada em Competências/organização & administração , Currículo , Bacharelado em Enfermagem/organização & administração , Península Balcânica , HumanosRESUMO
INTRODUCTION: The literature indicates different factors influencing recruitment of health professional students to work in rural areas. The purpose of this study is to explore the willingness of health profession students in the Faculty of Medicine Foca, University of East Sarajevo, Bosnia and Herzegovina to work in a rural area following graduation and the factors influencing incentives to pursue a rural career. METHODS: The cross-sectional study included first-year through sixth-year students aged 18 years or older and enrolled in one of three study programs at the Faculty of Medicine: medicine, dentistry and nursing. The questionnaire was distributed at the beginning of the winter semester during the first required lecture for each year and study program class. Data was analyzed using student t-test, analysis of variance when appropriate, Kruskal-Wallis test and multivariate logistic regression analysis. RESULTS: A total of 519 students participated, an 88.3% response rate. Three hundred and ninety-nine (77%) participants responded positively to the question 'When you complete your studies, would you be inclined to accept a job in a rural region?' Factors associated with willingness to practise in rural areas included being female (p=0.027) and having a rural upbringing (p=0.037). Significant differences between medicine, nursing and dentistry students were found in their opinion that willingness to work in rural practice depends greatly on the possibility to get residency more easily (p=0.001). Compared to their peers, nursing students had better opportunities to attend national courses cost-free (p=0.027) and to be involved in the education of new generations of health profession students (p=0.001). Getting a post in an urban area after a work period in a rural area was most valued as an incentive by dentistry students (p=0.037). The multivariate logistic regression model was used to analyze predictors of willingness to practise in rural areas. Students who had been raised in a rural community (p=0.042) as well as female students (p=0.016) were more likely to accept rural practice. Statistical significance at an alpha level of 0.05 was not reached for study program and year of study. CONCLUSIONS: The results of the study showed a high willingness of medicine, dentistry and nursing students to work in rural areas following graduation. Female students and students who were raised in a rural community were more likely to choose a rural career. Stakeholders should be committed to strengthening the rural deployment of health professionals by creating a more attractive, rural environment.
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Atitude do Pessoal de Saúde , Escolha da Profissão , Área de Atuação Profissional , Serviços de Saúde Rural/estatística & dados numéricos , Estudantes de Ciências da Saúde/psicologia , Adulto , Bósnia e Herzegóvina , Estudos Transversais , Feminino , Humanos , Masculino , População Rural , Estudantes de Medicina/psicologia , Estudantes de Enfermagem/psicologia , Inquéritos e Questionários , Recursos Humanos , Adulto JovemRESUMO
Accumulation of myeloid cells in the liver, notably dendritic cells (DCs) and monocytes/macrophages (MCs), is a major component of the metainflammation of obesity. However, the mechanism(s) stimulating hepatic DC/MC infiltration remain ill defined. Herein, we addressed the hypothesis that adipose tissue (AT) free fatty acids (FFAs) play a central role in the initiation of hepatic DC/MC accumulation, using a number of mouse models of altered FFA supply to the liver. In two models of acute FFA elevation (lipid infusion and fasting) hepatic DC/MC and triglycerides (TGs) but not AT DC/MC were increased without altering plasma cytokines (PCs; TNFα and monocyte chemoattractant protein 1) and with variable effects on oxidative stress (OxS) markers. However, fasting in mice with profoundly reduced AT lipolysis (AT-specific deletion of adipose TG lipase; AAKO) failed to elevate liver DC/MC, TG, or PC, but liver OxS increased. Livers of obese AAKO mice that are known to be resistant to steatosis were similarly protected from inflammation. In high-fat feeding studies of 1, 3, 6, or 20-wk duration, liver DC/MC accumulation dissociated from PC and OxS but tracked with liver TGs. Furthermore, decreasing OxS by ~80% in obese mice failed to decrease liver DC/MC. Therefore, FFA and more specifically AT-derived FFA stimulate hepatic DC/MC accumulation, thus recapitulating the pathology of the obese liver. In a number of cases the effects of FFA can be dissociated from OxS and PC but match well with liver TG, a marker of FFA oversupply.
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Tecido Adiposo/metabolismo , Jejum/metabolismo , Ácidos Graxos não Esterificados/metabolismo , Fígado/metabolismo , Células Mieloides/metabolismo , Animais , Citocinas/sangue , Dieta Hiperlipídica , Ácidos Graxos não Esterificados/farmacologia , Lipase/genética , Lipase/metabolismo , Lipólise/fisiologia , Fígado/efeitos dos fármacos , Camundongos , Camundongos Knockout , Obesidade/metabolismo , Estresse Oxidativo/efeitos dos fármacos , Estresse Oxidativo/fisiologia , Triglicerídeos/metabolismoRESUMO
INTRODUCTION: A health care system reform and the development of a new primary health care model, oriented toward family medicine, have been implemented to improve the quality of health services in Bosnia and Herzegovina. The primary objective of this article was to identify factors that hinder or facilitate implementation of family medicine in the country. METHODS: The qualitative study was performed by focus groups sessions, involving 54 family physicians, selected from 15 geographical regions in Bosnia and Herzegovina. Consolidated criteria for conducting and reporting qualitative research were used for conceptualizing the study. The discussions were transcribed verbatim and content analyzed. RESULTS: Family medicine is found to be partially implemented, mainly because of weak collective action of stakeholders, different degrees of consolidation and lack of coordination between primary and secondary health care. Physicians' workload, perception of financial pressure, and negative aspect of contracting were identified as barriers to implementation as well. Focused patient education or advertising campaigns are seen as the important activities assisting the promotion of family medicine. CONCLUSION: Although many steps forward have been made in the reform and implementation of the family medicine-oriented model of primary health care in Bosnia and Herzegovina, our results revealed that there is still much room for improvement. Particular attention should be paid to establishing common goals and reaching mutual understanding with key stakeholders.
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Médicos de Família/organização & administração , Atenção Primária à Saúde/organização & administração , Bósnia e Herzegóvina , Grupos Focais , Reforma dos Serviços de Saúde/organização & administração , Humanos , Modelos Organizacionais , Educação de Pacientes como Assunto , Desenvolvimento de Programas , Pesquisa QualitativaRESUMO
PURPOSE: To analyze the frequencies of two single nucleotide polymorphisms (SNPs) of EGFR gene, -191C/A and 181946G/A, among lung cancer patients from the Republic of Srpska, Bosnia and Hercegovina, as well as to assess the association of SNP genotypes with the cancer type and other demographic characteristics of patients, particularly with the smoking status. METHODS: This study enrolled 41 lung cancer patients from the territory of Republic Srpska, Bosnia and Herzegovina. Detection EGFR SNPs was performed using PCR-RFLP methodology. PCR was performed on 2720 Thermal Cycler (Applied Biosystems, United States). PCR, as well as RFLP products, were detected by gel electrophoresis. SPSS-17 software (SPSS, Inc.) was used for statistical analyses. RESULTS: There was significantly more male than female smokers in our cohort (p=0.006). In addition, the proportion of smokers was higher among patients with adenocarcinoma in comparison to patients with other lung cancer types (p=0.044). Adenocarcinoma was less common in patients older than 64 years (p=0.035). The wild type homozygous genotype of both SNPs was the most frequent genotype in all the tested demographic groups. Using dominant genetic model for -191C/A SNP, we observed statistically significant association of -191CC genotype and adenocarcinoma (p=0.043) in the subgroup of patients younger than 64 years. Namely, patients younger than 64 years and carriers of -191CC genotype had higher risk (odds ratio/OR=9.6; 95% confidence interval/CI= 0.8477 to 108.7214) for adenocarcinoma than the ones carrying -191CA or -191AA genotype. CONCLUSIONS: Patients younger than 64 years and carriers of -191CC genotype have significantly higher risk for adenocarcinoma than carriers of -191CA or -191AA genotype. Further studies on larger cohorts are necessary to evaluate -191C/A SNP as a potential biomarker.
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Predisposição Genética para Doença , Neoplasias Pulmonares/genética , Fumar/genética , Idoso , Alelos , Bósnia e Herzegóvina/epidemiologia , Receptores ErbB/genética , Feminino , Estudos de Associação Genética , Genótipo , Humanos , Neoplasias Pulmonares/epidemiologia , Neoplasias Pulmonares/patologia , Masculino , Pessoa de Meia-Idade , Polimorfismo de Nucleotídeo Único/genética , Sérvia/epidemiologia , Fumar/epidemiologia , Fumar/fisiopatologiaRESUMO
Leptin has potent effects on lipid metabolism in a number of peripheral tissues. In liver, an acute leptin infusion (~120 min) stimulates hepatic fatty acid oxidation (~30%) and reduces triglycerides (TG, ~40%), effects that are dependent on phosphoinositol-3-kinase (PI3K) activity. In the current study we addressed the hypothesis that leptin actions on liver-resident immune cells are required for these metabolic effects. Myeloid cell-specific deletion of the leptin receptor (ObR) in mice or depletion of liver Kupffer cells (KC) in rats in vivo prevented the acute effects of leptin on liver lipid metabolism, while the metabolic effects of leptin were maintained in mice lacking ObR in hepatocytes. Notably, liver TG were elevated in both lean and obese myeloid cell ObR, but the degree of obesity and insulin resistance induced by a high-fat diet was similar to control mice. In isolated primary hepatocytes (HEP), leptin had no effects on HEP lipid metabolism and only weakly stimulated PI3K. However, the coculture of KC with HEP restored leptin action on HEP fatty acid metabolism and stimulation of HEP PI3K. Notably, leptin stimulated the release from KC of a number of cytokines. However, the exposure of HEP to these cytokines individually [granulocyte macrophage colony-stimulating factor, IL-1α, IL-1ß, IL-6, IL-10, and IL-18] or in combination had no effects on HEP lipid metabolism. Together, these data demonstrate a role for liver mononuclear cells in the regulation of liver lipid metabolism by leptin.
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Hepatócitos/metabolismo , Células de Kupffer/fisiologia , Leptina/metabolismo , Metabolismo dos Lipídeos , Fígado/metabolismo , Triglicerídeos/metabolismo , Animais , Citocinas/imunologia , Fator Estimulador de Colônias de Granulócitos e Macrófagos/imunologia , Interleucina-10/imunologia , Interleucina-18/imunologia , Interleucina-1alfa/imunologia , Interleucina-1beta/imunologia , Interleucina-6/imunologia , Células de Kupffer/imunologia , Células de Kupffer/metabolismo , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Obesos , Células Mieloides/metabolismo , Fosfatidilinositol 3-Quinase/metabolismo , Ratos , Ratos Wistar , Receptores para Leptina/genéticaRESUMO
BACKGROUND: Benzodiazepines have a direct bronchodilatory effect. Methacholine is a non-selective muscarinic receptor agonist causing bronchoconstriction. AIM: To examine the effects of inhaled benzodiazepines, modulating bronchoconstriction induced by methacholine in patients with asthma. PATIENTS AND METHODS: Twelve patients with well controlled asthma were studied. On the first day, after determining the initial values of pulmonary function, a dose response curve was carried out with progressive doses of methacholine. After the last dose, when at least a 20% drop of the initial forced expiratory volume in the first second (FEV1) was achieved, vital capacity (VC) and FEV1 were measured at 7, 15 and 30 minutes after provocation. On the second day a diazepam aerosol was inhaled by the patients prior to the same protocol with methacholine. RESULTS: In the first day of testing, methacholine inhalation (6 mg/mL) led to a significant drop in FEV1 from 2.98 to 1.69 L. On the second day of study, in the same patients, previous inhalation with diazepam reduced the changes of FEV1 after inhalation of methacholine. This parameter decreased from 2.48 to 2.21 L. CONCLUSIONS: Inhalation of benzodiazepines reduce bronchoconstriction after a methacholine challenge in patients with asthma.
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Asma/prevenção & controle , Broncoconstrição/efeitos dos fármacos , Broncoconstritores/antagonistas & inibidores , Diazepam/farmacologia , Cloreto de Metacolina/antagonistas & inibidores , Receptores de GABA-A/uso terapêutico , Administração por Inalação , Adulto , Antropometria , Asma/fisiopatologia , Benzodiazepinas/uso terapêutico , Testes de Provocação Brônquica/métodos , Relação Dose-Resposta a Droga , Feminino , Volume Expiratório Forçado/efeitos dos fármacos , Volume Expiratório Forçado/fisiologia , Humanos , Masculino , Pessoa de Meia-Idade , Valores de Referência , Reprodutibilidade dos Testes , Fatores de Tempo , Capacidade Vital/fisiologiaRESUMO
ß-catenin regulates the establishment of hepatic metabolic zonation. To elucidate the functional significance of liver metabolic zonation in the chronically overfed state in vivo, we fed a high-fat diet (HFD) to hepatocyte-specific ß-catenin transgenic (TG) and knockout (KO) mice. Chow-fed TG and KO mice had normal liver histologic findings and body weight. However, HFD-fed TG mice developed prominent perivenous steatosis with periportal sparing. In contrast, HFD-fed KO mice had increased lobular inflammation and hepatocyte apoptosis. HFD-fed TG mice rapidly developed diet-induced obesity and systemic insulin resistance, but KO mice were resistant to diet-induced obesity. However, ß-catenin did not directly affect hepatic insulin signaling, suggesting that the metabolic effects of ß-catenin occurred via a parallel pathway. Hepatic expression of key glycolytic and lipogenic genes was higher in HFD-fed TG and lower in KO mice compared with wild-type mice. KO mice also exhibited defective hepatic fatty acid oxidation and fasting ketogenesis. Hepatic levels of hypoxia inducible factor-1α, an oxygen-sensitive transcriptional regulator of glycolysis and a known ß-catenin binding partner, were higher in HFD-fed TG and lower in KO mice. KO mice had attenuated perivenous hypoxia, suggesting disruption of the normal sinusoidal oxygen gradient, a major determinant of liver carbohydrate and liver metabolism. Canonical Wnt signaling in hepatocytes is essential for the development of diet-induced fatty liver and obesity.
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Dieta Hiperlipídica , Metabolismo dos Lipídeos , Fígado/metabolismo , Obesidade/metabolismo , beta Catenina/metabolismo , Animais , Apoptose , Peso Corporal , Ácidos Graxos/química , Fígado Gorduroso/metabolismo , Glicólise , Hepatócitos/metabolismo , Hipóxia/metabolismo , Imuno-Histoquímica , Inflamação , Insulina/metabolismo , Resistência à Insulina , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Mitocôndrias/metabolismo , Oxigênio/química , Transdução de SinaisRESUMO
BACKGROUNDS: The quality of life and survival of elderly depend not only on their age but on many social and health factors. In the present study, comprehensive geriatric assessment (CGA) was made in elderly patients on regular hemodialysis (HD) and those without chronic kidney disease recruited in primary health care in order to compare their sociodemographic characteristics, physical health, functional ability and social support. METHOD: The 106 HD patients and 300 primary care patients aged 70 years and more were studied. Data on sociodemographic characteristics, neurosensory deficits, pain, falls, polypharmacy, basic activities of daily living (ADL) questionnaire, instrumental activities of daily living (IADL) questionnaire were obtained during interview. The Timed Up and Go, Nutritional Health Checklist, Two Question Instrument for depression and Charlson comorbidity index (CCI) were applied. RESULTS: No significant differences were found for age, gender, education level and dwelling between the two groups. A lower percentage of HD patients lived alone when compared with controls. BMI >25 kg/m(2) had 43.4% of HD patients and 49.3% of controls. CCI differed significantly between HD and primary care patients (median: 6 vs. 4) and significantly more HD patients reported depression. No significant difference was found between groups for cognitive dysfunction and ADL, but HD patients had significantly lower IADL scores than controls. The mobility of HD patients was worse; 45.7% of them reported falls in the previous year but only 9.7% from the controls. CONCLUSIONS: CGA revealed that HD patients had significantly higher CCI, worse IADL score, mobility and reported more frequent falls, depression and impaired vision than primary care patients.
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Depressão/diagnóstico , Avaliação Geriátrica/métodos , Atenção Primária à Saúde/organização & administração , Qualidade de Vida/psicologia , Diálise Renal/psicologia , Acidentes por Quedas , Atividades Cotidianas , Idoso , Idoso de 80 Anos ou mais , Cognição , Estudos Transversais , Feminino , Humanos , Masculino , Escalas de Graduação Psiquiátrica , Fatores de Risco , Inquéritos e QuestionáriosRESUMO
We hypothesized that acute lipid-induced insulin resistance would be attenuated in high-oxidative muscle of lean trained (LT) endurance athletes due to their enhanced metabolic flexibility and mitochondrial capacity. Lean sedentary (LS), obese sedentary (OS), and LT participants completed two hyperinsulinemic euglycemic clamp studies with and without (glycerol control) the coinfusion of Intralipid. Metabolic flexibility was measured by indirect calorimetry as the oxidation of fatty acids and glucose during fasted and insulin-stimulated conditions, the latter with and without lipid oversupply. Muscle biopsies were obtained for mitochondrial and insulin-signaling studies. During hyperinsulinemia without lipid, glucose infusion rate (GIR) was lowest in OS due to lower rates of nonoxidative glucose disposal (NOGD), whereas state 4 respiration was increased in all groups. Lipid infusion reduced GIR similarly in all subjects and reduced state 4 respiration. However, in LT subjects, fat oxidation was higher with lipid oversupply, and although glucose oxidation was reduced, NOGD was better preserved compared with LS and OS subjects. Mitochondrial performance was positively associated with better NOGD and insulin sensitivity in both conditions. We conclude that enhanced mitochondrial performance with exercise is related to better metabolic flexibility and insulin sensitivity in response to lipid overload.
Assuntos
Resistência à Insulina , Lipídeos/administração & dosagem , Mitocôndrias Musculares/efeitos dos fármacos , Músculo Esquelético/efeitos dos fármacos , Músculo Esquelético/metabolismo , Adulto , Respiração Celular/efeitos dos fármacos , Emulsões/farmacologia , Metabolismo Energético/efeitos dos fármacos , Feminino , Técnica Clamp de Glucose , Humanos , Masculino , Mitocôndrias Musculares/fisiologia , Fosfolipídeos/farmacologia , Óleo de Soja/farmacologia , Fatores de Tempo , Adulto JovemRESUMO
The nature of mental disorders, the attitudes and prejudices of the social community towards psychiatric patients, the behavior and treatment of mental patients, all bring about numerous dilemmas and prejudices. When a patient is diagnosed with a mental disorder, he may suffer restrictions in the field of general human rights. However, the biggest problems in clinical practice occur in the treatment of patients who, besides their mental disorder also have a somatic disease. We report a 56-years-old female with a severe renal failure who refused to undergo dialysis. Following the patient's refusal to sign an informed consent, a psychiatrist was called in for consultation and diagnosed an acute psychotic reaction. To manage the delusions and acute psychotic reactions, risperidone in the dose of 2 mg was started. After 22 days, the patient still had marked psychotic symptoms. A psychiatrist, a nephrologist and an anesthesiologist, in the presence of the spouse on the grounds of her life-threatening condition, decided to apply the necessary medical procedures even without the patient's consent. A day after the start of dialysis the patient still had delusional ideas, but without the presence of anxiety, and the patient no longer offered resistance to dialysis. Four days after the first dialysis, the patient was calm, had vague memories about the entire previous period, and signed the informed consent concerning her further treatment.
Assuntos
Consentimento Livre e Esclarecido , Diálise Renal/psicologia , Insuficiência Renal/psicologia , Transtornos de Ansiedade , Comorbidade , Feminino , Humanos , Transtornos Mentais , Pessoa de Meia-Idade , Insuficiência Renal/terapia , Recusa do Paciente ao TratamentoRESUMO
Biopsies of muscle and adipose tissue (AT) are useful tools to gain insights into the aging processes in these tissues. However, they are invasive procedures and their risk/benefit profile in older adults can be altered by sarcopenia, frailty, poor healing, and multimorbidity. Their success rates, safety, and tolerability in a geriatric population have not been reported in detail. Investigators in the Study of Muscle, Mobility, and Aging (SOMMA) performed biopsies of muscle and AT in older adults and prospectively collected data on biopsy success rates, safety, and tolerability. We report here the methods and outcomes of these two procedures. In total, 861 participants (aged 70-94) underwent percutaneous biopsies of the Vastus lateralis muscle with a Bergstrom needle. A subset (n = 241) also underwent percutaneous biopsies of the abdominal subcutaneous AT with the tumescent liposuction technique. Success rate was assessed by the percentage of biopsies yielding adequate specimens for analyses; tolerability by pain scores; and safety by frequency of adverse events. All data were prospectively collected. The overall muscle biopsy success rate was 97.1% and was modestly lower in women. The AT biopsy success rate was 95.9% and slightly lower in men. Minimal or no pain was reported in 68% of muscle biopsies and in 83% of AT biopsies. Adverse events occurred in 2.67% of muscle biopsies and 4.15% of AT biopsies. None was serious. In older adults, percutaneous muscle biopsies and abdominal subcutaneous AT biopsies have an excellent safety profile, often achieve adequate tissue yields for analyses, and are well tolerated.