El mercado de trabajo brasileño: nuevos y viejos procesos y la expansión del circuito inferior

La intensificación de la participación de Brasil en la división internacional del trabajo implica la presencia cada vez mayor de los agentes de la economía globalizada y de sus actividades modernas en las grandes metrópolis del país, sobre todo en São Paulo, que se destaca en el escenario internacional como una de las llamadas ciudades “globales”. No obstante, las metrópolis acogen también un enorme abanico de actividades realizadas por la población pobre. Por tanto, estas metrópolis contienen diferentes divisiones del trabajo que coexisten y pueden analizarse como circuitos de la economía urbana (Santos, 1978)

Quantitative and Qualitative Analysis on Sex and Gender in Preparatory Material for National Medical Examination in Germany and the United States

Background: Sex- and gender-based medicine (SGBM) should be a mandatory part of medical education. We compared the quantity and quality of sex- and gender-related content of e-learning materials commonly used by German and American medical students while preparing for national medical examinations. Methods: Quantitative, line-by-line analysis of the preparatory materials AMBOSS 2017 and USMLE Step 1 Lecture Notes (2017) by KAPLAN MEDICAL was performed between April and October 2017. Subjects were allocated to one of the three main fields: clinical subjects, behavioral and social science, and pharmacology. Qualitative analysis comprised binary categorization into sex- and gender-based aspects and qualification with respect to the presence of a pathophysiological explanation for the sex or gender difference. Results: In relation to the total content of AMBOSS and KAPLAN, the sex- and gender-based share of the clinical subjects content was 26.8% (±8.2) in AMBOSS and 21.1% (±10.2) in KAPLAN. The number of sex- and gender-based aspects in the behavioral and social science learning material differed significantly for AMBOSS and KAPLAN (4.4% ± 3.1% vs 10.7% ± 7.5%; P = .044). Most of the sex- and gender-related content covered sex differences. Most learning cards and texts did not include a detailed pathophysiological explanation for sex- or gender-based aspects. The knowledge provided in the preparatory documents represents only a small part of facts that are already known about sex and gender differences. Conclusions: The preparatory materials focused almost exclusively on biological sex differences and the sociocultural dimension in particular is underrepresented. A lot more evidence-based facts are known and should be integrated into the materials to reflect the importance of SGBM as an integral component of patient-centered medicine

Eine deutsche Adaptation des ENRICHD Social Support Inventory (ESSI) - Teststatistische Überprüfung an kardialen Patienten

Zur Erfassung der wahrgenommenen emotionalen sozialen Unterstützung bei kardialen Patienten wird das ESSI-D (ENRICHD Social Support Inventory – Deutsch), eine deutsche Adaptation des englischen ESSI, vorgestellt. Mit einer Stichprobe von N = 1597 Patienten (22.7% Frauen), die sich einer Bypass-Operation unterzogen, wurden die psychometrischen Eigenschaften des ESSI-D überprüft. Cronbachs Alpha der Gesamtskala lag bei α = .89. Eine konfirmatorische Faktorenanalyse bestätigte die einfaktorielle Struktur der Skala. Korrelationen mit unterschiedlichen Kriteriumsvariablen wie Partnerstatus, soziale Funktionsfähigkeit, körperliche Funktion und Depressivität lieferten Hinweise für eine zufriedenstellende Konstruktvalidität. Das ESSI-D erweist sich für diese Patientengruppe als ein ökonomisches Instrument zur Erfassung der emotionalen sozialen Unterstützung mit guten psychometrischen Eigenschaften

a web-based interactive knowledge-sharing platform for sex- and gender- specific medical education

Background Sex and Gender Medicine is a novel discipline that provides equitable medical care for society and improves outcomes for both male and female patients. The integration of sex- and gender-specific knowledge into medical curricula is limited due to adequate learning material, systematic teacher training and an innovative communication strategy. We aimed at initiating an e-learning and knowledge-sharing platform for Sex and Gender Medicine, the eGender platform (http://egender.charite.de), to ensure that future doctors and health professionals will have adequate knowledge and communication skills on sex and gender differences in order to make informed decisions for their patients. Methods The web-based eGender knowledge-sharing platform was designed to support the blended learning pedagogical teaching concept and follows the didactic concept of constructivism. Learning materials developed by Sex and Gender Medicine experts of seven universities have been used as the basis for the new learning tools. The content of these tools is patient-centered and provides add-on information on gender-sensitive aspects of diseases. The structural part of eGender was designed and developed using the open source e-learning platform Moodle. The eGender platform comprises an English and a German version of e-learning modules: one focusing on basic knowledge and seven on specific medical disciplines. Each module consists of several courses corresponding to a disease or symptom complex. Self-organized learning has to be managed by using different learning tools, e.g., texts and audiovisual material, tools for online communication and collaborative work. Results More than 90 users from Europe registered for the eGender Medicine learning modules. The most frequently accessed module was “Gender Medicine—Basics” and the users favored discussion forums. These e-learning modules fulfill the quality criteria for higher education and are used within the elective Master Module “Gender Medicine—Basics” implemented into the accredited Master of Public Health at Charité—Berlin. Conclusions The eGender platform is a flexible and user-friendly electronical knowledge-sharing platform providing evidence-based high-quality learning material used by a growing number of registered users. The eGender Medicine learning modules could be key in the reform of medical curricula to integrate Sex and Gender Medicine into the education of health professionals

Reduction of apoptosis and preservation of mitochondrial integrity under ischemia/reperfusion injury is mediated by estrogen receptor β

Background Estrogen improves cardiac recovery after ischemia/reperfusion (I/R) by yet incompletely understood mechanisms. Mitochondria play a crucial role in I/R injury through cytochrome c-dependent apoptosis activation. We tested the hypothesis that 17β-estradiol (E2) as well as a specific ERβ agonist improve cardiac recovery through estrogen receptor (ER)β-mediated mechanisms by reducing mitochondria-induced apoptosis and preserving mitochondrial integrity. Methods We randomized ovariectomized C57BL/6N mice 24h before I/R to pre-treatment with E2 or a specific ERβ agonist (ERβA). Isolated hearts were perfused for 20min prior to 30min global ischemia followed by 40min reperfusion. Results Compared with controls, ERβA and E2 treated groups showed a significant improvement in cardiac recovery, i.e. an increase in left ventricular developed pressure, dP/dtmax and dP/dtmin. ERβA and E2 pre- treatment led to a significant reduction in apoptosis with decreased cytochrome c release from the mitochondria and increased mitochondrial levels of anti-apoptotic Bcl2 and ACAA2. Protein levels of mitochondrial translocase inner membrane (TIM23) and mitochondrial complex I of respiratory chain were increased by ERβA and E2 pre-treatment. Furthermore, we found a significant increase of myosin light chain 2 (MLC2) phosphorylation together with ERK1/2 activation in E2, but not in ERβA treated groups. Conclusions Activation of ERβ is essential for the improvement of cardiac recovery after I/R through the inhibition of apoptosis and preservation of mitochondrial integrity and can be a achieved by a specific ERβ agonist. Furthermore, E2 modulates MLC2 activation after I/R independent of ERβ

Cardiac Vulnerability to Ischemia/Reperfusion Injury Drastically Increases in Late Pregnancy

Digitalitzat per Artypla

Can oral infection be a risk factor for Alzheimer’s disease?

Alzheimer’s disease (AD) is a scourge of longevity that will drain enormous resources from public health budgets in the future. Currently, there is no diagnostic biomarker and/or treatment for this most common form of dementia in humans. AD can be of early familial-onset or sporadic with a late-onset. Apart from the two main hallmarks, amyloid-beta and neurofibrillary tangles, inflammation is a characteristic feature of AD neuropathology. Inflammation may be caused by a local central nervous system insult and/or by peripheral infections. Numerous microorganisms are suspected in AD brains ranging from bacteria (mainly oral and non-oral Treponema species), viruses (Herpes simplex type I) and yeasts (Candida species). A causal relationship between periodontal pathogens/non-oral Treponema species of bacteria has been proposed via the amyloid-beta and inflammatory links. Periodontitis constitutes a peripheral oral infection that can provide the brain with intact bacteria and virulence factors and inflammatory mediators due to daily, transient bacteraemias. If and when genetic risk factors meet environmental risk factors in the brain, disease is expressed, in which neurocognition may be impacted, leading to the development of dementia. To achieve the goal of finding a diagnostic biomarker and possible prophylactic treatment for AD, there is an initial need to solve the etiological puzzle contributing to its pathogenesis. This review therefore addresses oral infection as the plausible aetiology of late onset AD (LOAD)

α2C-Adrenoceptor polymorphism is associated with improved event-free survival in patients with dilated cardiomyopathy

Aims The sympathetic nervous system plays a central role in cardiac growth but its overstimulation is associated with increased mortality in patients with chronic heart failure. Pre-synaptic α2-adrenoceptors are essential feedback regulators to control the release of norepinephrine from sympathetic nerves. In this study we tested whether a deletion polymorphism in the human α2C-adrenoceptor gene (α2CDel322-325) affects progression of heart failure in patients with dilated cardiomyopathy (DCM). Methods and results We genotyped and phenotyped 345 patients presenting with DCM in the heart transplant unit of the German Heart Institute, starting in 1994. Patients were treated according to guidelines (99% ACEI, 76% β-blockers) and were followed until December 2002 or until a first event [death, heart transplantation, or implantation of a left ventricular assist device (LVAD) for a life-threatening condition] occurred. Mean follow-up time was 249 weeks (4.9 years) in event-free patients and 104 weeks (2 years) in patients with events. During follow-up, 51% of the patients exhibited an event: death (18%), implantation of LVAD as bridging for transplantation (7%), or heart transplantation (25%). By Kaplan-Meier analysis, DCM patients with the deletion variant Del322-325 in the α2C-adrenoceptor showed significantly decreased event rates (P=0.0043). Cox regression analysis revealed that the presence of the deletion was associated with reduced death rate (relative risk: 0.129, 95% CI: 0.18-0.9441, P=0.044) and event rates (relative risk: 0.167, 95% CI: 0.041-0.685, P=0.012). Conclusion α2C-Adrenoceptor deletion may be a novel, strong, and independent predictor of reduced event rates in DCM patients treated according to guideline

Current management of patients with severe acute peripartum cardiomyopathy: practical guidance from the Heart Failure Association of the European Society of Cardiology Study Group on peripartum cardiomyopathy

No abstract available

Sex and Gender Differences in Heart Failure

Heart failure (HF) phenotypes differ according to sex. HF preserved ejection fraction (EF) has a greater prevalence in women and HF reduced EF (HFrEF) in men. Women with HF survive longer than men and have a lower risk of sudden death. Ischemia is the most prominent cause in men, whereas hypertension and diabetes contribute to a greater extent in women. Women with HF have a greater stiffness of the smaller left ventricle and a higher EF than men. This higher stiffness of women's hearts may be based on an increase in fibrosis at old age. In younger women estrogen reduces collagen production in female cardiac fibroblasts, but stimulates it in males. Lipid and energy metabolism is better maintained in female than in male stressed hearts. Pulse pressure is a key determinant of outcome in HF women but not in men. Takotsubo and peripartum cardiomyopathy are rare diseases affecting predominantly or exclusively women. Sudden cardiac arrest affects more men than women, but women are less adequately treated. New findings in HF therapy indicate that women with HFrEF need lower doses of beta-blockers and angiotensin-converting enzyme inhibitors than men for optimal effects. The combined neprilysin inhibitor/angiotensin II receptor blockers sacubitril-valsartan led to a significant reduction in event rate versus valsartan in women, which was not observed in men. Unfortunately, only less than 10% of recent randomized controlled trial report effects and adverse drug reactions for women and men separately. More research on sex differences in pathophysiology and therapy of HF is needed