833 research outputs found
collaborative services in informal settlements social innovation in a pacified favela in rio de janeiro
Informal settlements, such as favelas (slums), are complex social ecosystems, characterised by their lack of basic services and by their particular social ties. Favelas in Rio de Janeiro are undergoing rapid changes, and new organisations and relationships are beginning to appear. This is largely as a result of the Rio de Janeiro government's policy of 'pacification' — a strategy to occupy the favelas formerly controlled by drug dealers, aimed at extending citizens' rights (and duties) in these areas (Fleury, 2012)
Comprehensive Axillary Management of Clinically Node-Positive (cN plus ) Breast Cancer Patients: A Narrative Review on Neoadjuvant Chemotherapy
Simple Summary Axillary management in breast cancer has undergone significant changes over the past decades, especially with the introduction of neoadjuvant chemotherapy (NACT). NACT aims to shrink tumors before surgery, allowing for less invasive axillary approaches such as sentinel lymph node biopsy (SLNB) and targeted axillary dissection (TAD). These techniques help reduce the need for axillary lymph node dissection (ALND), which is associated with higher risks of complications like lymphedema. However, patient selection for these procedures depends on factors such as tumor biology, response to NACT, and the extent of nodal disease. This review discusses the latest evidence supporting de-escalation strategies in axillary surgery and highlights ongoing research that aims to further refine the selection criteria for these approaches. Multidisciplinary collaboration remains key to implementing personalized treatments that optimize patient outcomes while minimizing surgical morbidity.Abstract Background. In breast cancer (BC) patients, axillary management has undergone major improvements over the last few years, and efforts to identify the optimal strategy for the management of axillary surgery are still ongoing. Methods. In current clinical practice, women with clinically node-positive (cN+) BC usually receive neoadjuvant chemotherapy (NACT) with the aim of reducing the extent of primary disease and, thus, allowing for axillary-conservative surgery. Remarkably, after NACT, up to one out of three patients achieves an axillary pathologic complete response, which, in turn, is associated with a more favorable prognosis than residual axillary disease. However, NACT is not without drawbacks, as NACT-associated inflammation can damage lymphatic vessels. Furthermore, varying degrees of response may occur in the axillary lymph nodes, increasing the false negative rate for sentinel biopsy. Results. At present, there is no consensus on the optimal approach in patients with cN+ BC undergoing NACT, although multidisciplinary management seems to be recommended. Conclusions. This narrative review provides a comprehensive overview of axillary management in cN+ BC patients undergoing NACT. It uses a multidisciplinary approach that encompasses the oncological management perspectives, as well as surgical and chemotherapeutic viewpoints
The "Adipo-Cerebral" Dialogue in Childhood Obesity: Focus on Growth and Puberty. Physiopathological and Nutritional Aspects
Overweight and obesity in children and adolescents are overwhelming problems in western countries. Adipocytes, far from being only fat deposits, are capable of endocrine functions, and the endocrine activity of adipose tissue, resumable in adipokines production, seems to be a key modulator of central nervous system function, suggesting the existence of an “adipo-cerebral axis.” This connection exerts a key role in children growth and puberty development, and it is exemplified by the leptin–kisspeptin interaction. The aim of this review was to describe recent advances in the knowledge of adipose tissue endocrine functions and their relations with nutrition and growth. The peculiarities of major adipokines are briefly summarized in the first paragraph; leptin and its interaction with kisspeptin are focused on in the second paragraph; the third paragraph deals with the regulation of the GH-IGF axis, with a special focus on the model represented by growth hormone deficiency (GHD); finally, old and new nutritional aspects are described in the last paragraph
Retroviral transfer of the p16INK4a cDNA inhibits C6 glioma formation in Wistar rats
BACKGROUND: The p16(INK4A) gene product halts cell proliferation by preventing phosphorylation of the Rb protein. The p16INK4a gene is often deleted in human glioblastoma multiforme, contributing to unchecked Rb phosphorylation and rapid cell division. We show here that transduction of the human p16INK4a cDNA using the pCL retroviral system is an efficient means of stopping the proliferation of the rat-derrived glioma cell line, C6, both in tissue culture and in an animal model. C6 cells were transduced with pCL retrovirus encoding the p16INK4a, p53, or Rb genes. These cells were analyzed by a colony formation assay. Expression of p16INK4a was confirmed by immunohistochemistry and Western blot analysis. The altered morphology of the p16-expressing cells was further characterized by the senescence-associated β-galactosidase assay. C6 cells infected ex vivo were implanted by stereotaxic injection in order to assess tumor formation. RESULTS: The p16INK4a gene arrested C6 cells more efficiently than either p53 or Rb. Continued studies with the p16INK4a gene revealed that a large portion of infected cells expressed the p16INK4a protein and the morphology of these cells was altered. The enlarged, flat, and bi-polar shape indicated a senescence-like state, confirmed by the senescence-associated β-galactosidase assay. The animal model revealed that cells infected with the pCLp16 virus did not form tumors. CONCLUSION: Our results show that retrovirus mediated transfer of p16INK4a halts glioma formation in a rat model. These results corroborate the idea that retrovirus-mediated transfer of the p16INK4a gene may be an effective means to arrest human glioma and glioblastoma
Cardiovascular toxicity induced by chemotherapy, targeted agents and radiotherapy: ESMO Clinical Practice Guidelines
Cardiovascular (CV) toxicity is a potential short- or long-term complication of various anticancer therapies. Some drugs, such as anthracyclines or other biological agents, have been implicated in causing potentially irreversible clinically important cardiac dysfunction. Although targeted therapies are considered less toxic and better tolerated by patients compared with classic chemotherapy agents, rare but serious complications have been described, and longer follow-up is needed to determine the exact profile and outcomes of related cardiac side-effects. Some of these side-effects are irreversible, leading to progressive CV disease, and some others induce reversible dysfunction with no long-term cardiac damage to the patient. Assessment of the prevalence, type and severity of cardiac toxicity caused by various cancer treatments is a breakthrough topic for patient management. Guidelines for preventing, monitoring and treating cardiac side-effects are a major medical need. Efforts are needed to promote strategies for cardiac risk prevention, detection and management, avoiding unintended consequences that can impede development, regulatory approval and patient access to novel therapy. These new ESMO Clinical Practice Guidelines are the result of a multidisciplinary cardio-oncology review of current evidence with the ultimate goal of providing strict criteria-based recommendations on CV risk prevention, assessment, monitoring and management during anticancer treatmen
Immunomorphological Patterns of Chaperone System Components in Rare Thyroid Tumors with Promise as Biomarkers for Differential Diagnosis and Providing Clues on Molecular Mechanisms of Carcinogenesis
Hurthle cell (HC), anaplastic (AC), and medullary (MC) carcinomas are low frequency
thyroid tumors that pose several challenges for physicians and pathologists due to the scarcity of
cases, information, and histopathological images, especially in the many areas around the world
in which sophisticated molecular and genetic diagnostic facilities are unavailable. It is, therefore,
cogent to provide tools for microscopists to achieve accurate diagnosis, such as histopathological
images with reliable biomarkers, which can help them to reach a differential diagnosis. We are
investigating whether components of the chaperone system (CS), such as the molecular chaperones,
can be considered dependable biomarkers, whose levels and distribution inside and outside cells in
the tumor tissue could present a distinctive histopathological pattern for each tumor type. Here, we
report data on the chaperones Hsp27, Hsp60, and Hsp90. They presented quantitative levels and
distribution patterns that were different for each tumor and differed from those of a benign thyroid
pathology, goiter (BG). Therefore, the reported methodology can be beneficial when the microscopist
must differentiate between HC, AC, MC, and BG
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