Zobrazení zdroje stránky Laneheller3097

Nature has evolved to grow and regenerate tissues and organs using self-assembling processes capable of organizing a wide variety of molecular building-blocks at multiple size scales. As the field of biofabrication progresses, it is essential to develop innovative ways that can enhance our capacity to build more complex macroscopic structures using molecular and nanoscale components in a rational manner. In this review, we highlight the emerging opportunities, advantages, and challenges of incorporating self-assembly with biofabrication for the development of more biologically relevant, active, and functional structures. The review is organized in four sections. First, to better appreciate the benefits of this integrated approach, we summarize recent advances in self-assembly and biofabrication aimed at improving hierarchical control. Then, we discuss work focused on combining self-assembly with biofabrication in three areas including a) conventional bioprinting techniques using self-assembling bioinks; b) new methods where self-assembly drives the fabrication process, and c) techniques based on cellular self-assembly. The ultimate goal of this review is to emphasize the importance of structural hierarchy in biological systems and to highlight the potential behind the integration of biofabrication and self-assembly towards the development of more functional structures for tissue engineering and regenerative medicine.Background Type 2 diabetes affects 9.4% of US adults with higher rates among racial and ethnic minorities and individuals of low socioeconomic status. The National Diabetes Prevention Program (NDPP) is an evidence-based and widely disseminated behavioral intervention to reduce diabetes incidence through modest weight loss. However, retention in the yearlong NDPP is problematic and leads to suboptimal weight loss, especially among diverse, underserved populations. Strategies to improve NDPP engagement and weight loss are needed urgently. Pilot results of the pre-NDPP, a novel enhancement to enrollment in the NDPP based on the Health Belief Model, were highly successful in a nonrandomized cohort study among 1140 racially diverse, predominately low-income participants. A total of 75 presession participants had doubled attendance and weight loss as compared with earlier participants who did not receive presessions. On the basis of these promising results, we are conducting a randomized controlled trial (RCT) to dance and weight loss compared with standard NDPP delivery. Results This project was funded in April 2019. Recruitment is underway as of July 2019. Initial participants began the intervention in October 2019. Data analysis and results reporting are expected to be completed in 2024. Conclusions This RCT of pre-NDPP may lead to future dissemination of a scalable, evidence-based strategy to improve success of the NDPP, reduce disparities in NDPP effectiveness, and help prevent type 2 diabetes across the country. Trial registration ClinicalTrials.gov NCT04022499; https//clinicaltrials.gov/ct2/show/NCT04022499. International registered report identifier (irrid) PRR1-10.2196/15499.Background Community-based recovery-oriented mental health services for people with severe mental disorders have not been fully implemented in Bulgaria, Croatia, Macedonia, Montenegro, and Romania. The RECOVER-E project facilitates the implementation of specialized mental health care delivered by setting up services, implementing the services, and evaluating multidisciplinary community mental health teams. The outcomes of the RECOVER-E project are assessed in a trial-based outcome evaluation in each of the participating countries with a health-economic evaluation linked to these trials. Objective The aim of this protocol paper is to describe the methodology that will be used for the health-economic evaluation alongside the trials. Methods Implementation sites have been selected in each of the five countries where hospital-based mental health services are available (care as usual [CAU]) for patients with severe mental disorders (severe depression, bipolar disorder, schizophrenia, and other psychotic disorders)R-E project will contribute to the growing evidence base on the health and economic benefits of recovery-oriented and community-based service models for health systems in transition. Trial registration (1) ClinicalTrials.gov NCT03922425 (Bulgaria); https//clinicaltrials.gov/ct2/show/NCT03922425 (2) ClinicalTrials.gov NCT03862209 (Croatia); https//clinicaltrials.gov/ct2/show/NCT03862209 (3) ClinicalTrials.gov NCT03892473 (Macedonia); https//clinicaltrials.gov/ct2/show/NCT03892473 (4) ClinicalTrials.gov NCT03837340 (Montenegro); https//clinicaltrials.gov/ct2/show/NCT03837340 (5) ClinicalTrials.gov NCT03884933 (Romania); https//clinicaltrials.gov/ct2/show/NCT03884933. [https://www.selleckchem.com/products/en4.html selleck] International registered report identifier (irrid) DERR1-10.2196/17454.Lymphomas are a heterogeneous group of diseases that encompass malignant disorders of B-cells, T-cells, or natural killer cells. B-cell lymphomas represent approximately 80-85% of cases. Transformation of B-cell lymphomas from a low grade to a higher grade within the same lineage is a well-described phenomenon. The most common and well-known transformation is from follicular lymphoma to diffuse large B-cell lymphoma. However, the transformation of B-cell lymphomas to T-cell lymphomas is extremely rare. In this article, we report a case of grade I follicular lymphoma (B-cell lymphoma) that transformed into anaplastic large cell lymphoma CD30+ ALK1- (T-cell lymphoma). This article reported a case with a unique particular combination of morphology and immunophenotype in the same patient. In addition, we report a remarkable response with complete remission following treatment with Brentuximab vedotin (anti-CD30 antibody-drug conjugate) and high-dose methotrexate. The patient achieved this durable response despite the aggressive presentation.Background Toxic leukoencephalopathy predominantly affect white matter of the brain parenchyma. Patient presents either in acute, subacute or chronic phase. The clinical presentation may vary, ranging from mild cognitive impairment to severe neurological dysfunction. It can also mimic psychiatric illness. Case report A 50-year-old woman was diagnosed with locally advanced carcinoma buccal mucosa. She was planned for Neoadjuvant chemotherapy consisting of Docetaxel, Cisplatin, 5-FU (TPF). During 3rd day of 3rd cycle of 5-fluorouracil (5FU) infusion, patient developed hypoactive delirium and later became comatose state of drowsiness, with Glasgow Coma Scale (GCS) was 5. There was no previous history for the same. Hence, the infusion was stopped. Patient was evaluated with NCCT head. No abnormality was seen on CT scan. MRI brain was done and it showed diffusion restriction with T2 / FLAIR hyper intensities in bilateral centrum semiovale, white matter of bilateral parietal region and in corpus callosum. Patient received symptomatic care, nutrition by ryles tube during this period and she started to improve after 1st week of onset of symptoms. After 3 weeks, MRI was repeated and there was complete resolution of previous findings. Conclusions Development of neurological symptoms during 5FU infusion is a rare entity. Henceforth, occurrence of toxic leukoencephalopathy should be kept in mind. Diffusion weighted imaging play an important role in both acute episode of toxic encephalopathy and in follow up.Post chemoradiation vocal cord immobility is a rare complication and this maybe life threatening when patients present with severe aspiration and recurrent pneumonia or even worse if they have an upper airway obstruction. We report a case of nasopharyngeal carcinoma patient whom after receiving curative concurrent chemoradiotherapy, presented with episodes of shortness of breath and aspiration pneumonia finally diagnosed with bilateral vocal cord immobility. She had no evidence of tumour recurrence.Tracheal squamous cell carcinoma is the most common pathology in smokers while ACC is more prevalent among non-smokers. These tumors tend also to be diagnosed late on account of delayed specific symptoms as hemoptysis, dyspnea, cough, hoarseness, and stridor being the most common. Management of tracheal tumors is essentially multidisciplinary. It includes interventional endoscopy, surgery, radiotherapy, and/or end luminal brachytherapy. Extensive segmental resection of the trachea is the potentially curative treatment of choice for primary lesion. The sleeve trachea resection is one of the optimal surgical modalities. The other options are partial tracheal wall resection and immediate tracheal reconstruction, total laryngectomy plus partial resection of trachea and primary reconstruction, laryngeo-tracheal resection, cervico-mediastinal exenteration, or carinal resection and reconstruction. Trachea anastomosis is suitable for small defects. The platysma myocutaneous flap combined with the facial flap of the st chemotherapy or immunotherapy, may be worth exploring. Our initial findings suggest the use of concurrent chemotherapy in addition to RT in patients with locally advanced tracheal SCC.Background Cetuximab-based chemotherapy is the standard palliative chemotherapy in head and neck cancers, but there is a limitation due to financial and logistic reasons, and where oral metronomic chemotherapy can be a successful alternate. Oral metronomic chemotherapy (MCT) can either be with Methotrexate alone or a combination of Methotrexate and Erlotinib. The study was aimed to assess the clinical outcome of oral MCT in head and neck cancer patients. Materials and methods This was a retrospective review done at a tertiary cancer centre in India. The clinical outcomes of head and neck cancers patients started on palliative oral MCT from 1st August 2016 to 31st December 2017 were analyzed. The demographic details, toxicity profiles, response to MCT, disease progression status were analyzed. Univariate analysis was done to assess the factors associated with disease progression. Kaplan Meier curve was used for estimating progression free survival (PFS). Results Of the total 104 patients, the most common primary site of head and neck cancer was oral cavity (52%). MCT scheduled with Methotrexate and Erlotinib in 80 patients. Toxicity rate was 61%, with Grade 3-4 toxicity in 21%. Response rate was 56% and clinically meaningful response rate was 69%. Disease progression was observed in 55% patients. Median PFS rate was 134 Days. Oral MCT was permanently stopped in 73%, the most common reason being disease progression. Discussion Patients who underwent palliative oral MCT had a median PFS of 134 days which is considered as promising treatment method. Results confirmed more than 50% response rate with lower Grade 3-4 toxicities. Conclusion Palliative oral MCT either with Methotrexate and Erlotinib or Methotrexate alone will be a feasible treatment option in patients with head and neck cancers treated with palliative intent.Background Alpha-fetoprotein (AFP) is a serum tumor marker used in the past for surveillance and screening of hepatocellular carcinoma (HCC) in patients with cirrhosis. Its prognostic value is still debated in the literature. The aim of this study was to evaluate the prognostic impact of the AFP rate at diagnosis on the overall survival of patients with a small HCC (10 ng / ml (group II). Both groups of patients were comparable for age and WHO status (World Health Organization). Patient survival was assessed by the Kaplan-Meier method. The survival at 5 years was 35.7% in group 1 vs 12.3% in group 2. The AFP level was identified as an independent prognostic factor of survival. Conclusion Alpha-fetoprotein serum positivity seems to have prognostic value in patients with single small HCC.