Emerging Role of Mesenchymal Stromal Cell-Derived Extracellular Vesicles in Pathogenesis of Haematological Malignancies.

Homoeostasis of bone marrow microenvironment depends on a precise balance between cell proliferation and death, which is supported by the cellular-extracellular matrix crosstalk. Multipotent mesenchymal stromal cells (MSC) are the key elements to provide the specialized bone marrow microenvironment by supporting, maintaining, and regulating the functions and fate of haematopoietic stem cells. Despite the great potential of MSC for cell therapy in several diseases due to their regenerative, immunomodulatory, and anti-inflammatory properties, they can also contribute to modulate tumor microenvironment. The extracellular vesicles that comprise exosomes and microvesicles are important mediators of intercellular communication due to their ability to change phenotype and physiology of different cell types. These vesicles may interact not only with neighbouring cells but also with cells from distant tissues to either maintain tissue homoeostasis or participate in disease pathogenesis. This review focuses on the current knowledge about the physiological role of MSC-extracellular vesicles, as well as their deregulation in haematological malignancies and their potential applications as biomarkers for diagnosis, progression, and treatment monitoring of such diseases.

Clinical pharmacists' contributions to hematopoietic stem cell transplantation: A systematic review.

AIMS: The goal of the present review was to identify studies that assess how pharmaceutical services contribute to hematopoietic stem cell transplantation (HSCT). METHODS: We conducted a systematic literature review of published studies describing results from clinical services provided by pharmacists working with HSCT, conducted according to PRISMA guidelines ( PROSPERO registration number CRD42017062391). A search strategy was applied within PubMed, CENTRAL, EMBASE, SCOPUS, and LILACS databases in April 2017. Inclusion criteria were observational or experimental studies that addressed the following research question: "What are a clinical pharmacist's main contributions to HSCT?" The quality of selected studies was evaluated using the Downs and Black checklist. RESULTS: We identified 1838 studies, and seven were included in the systematic review. The results indicated that clinical pharmacy is useful during HSCT treatment within both inpatient and outpatient settings. Pharmaceutical contributions identified included management of pharmacotherapy-related problems, participation in discussions with clinical teams, drug reconciliation, patient and team education regarding pharmacotherapy, preparation of guidelines and educational materials, and evaluation of medication adherence. These activities favored the control and prevention of pharmacotherapy-related problems, the maintenance of immunosuppressive serum levels, improvement in patients' clinical and nutritional status, facilitated medication adherence, and provided economic and humanistic gains. CONCLUSIONS: Despite the small number of articles discussing the topic under analysis, the results were unanimous in confirming the positive impact of pharmacists' contributions to clinical practice for HSCT.

Lower socioeconomic status is independently associated with shorter survival in Hodgkin Lymphoma patients-An analysis from the Brazilian Hodgkin Lymphoma Registry.

Socioeconomic status (SES) is a well-known determinant of outcomes in cancer. The purpose of this study was to analyze the impact of the SES on the outcomes of Hodgkin lymphoma (HL) patients from the Brazilian Prospective HL Registry. SES stratification was done using an individual asset/education-based household index. A total of 624 classical HL patients with diagnosis from January/2009 to December/2014, and treated with ABVD (doxorubicin, bleomycin, vinblastine and dacarbazine), were analyzed. The median follow-up was 35.6 months, and 33% were classified as lower SES. The 3-year progression- free survival (PFS) in higher and lower SES were 78 and 64% (p < 0.0001), respectively. The 3-year overall survival (OS) in higher and lower SES were 94 and 82% (p < 0.0001), respectively. Lower SES patients were more likely to be ≥ 60 years (16 vs. 8%, p = 0.003), and to present higher risk International Prognostic score (IPS) (44 vs. 31%, p = 0.004) and advanced disease (71 vs. 58%, p = 0.003). After adjustments for potential confounders, lower SES remained independently associated with poorer survival (HR = 3.12 [1.86-5.22] for OS and HR = 1.66 [1.19-2.32] for PFS). The fatality ratio during treatment was 7.5 and 1.3% for lower and higher SES (p = 0.0001). Infections and treatment toxicity accounted for 81% of these deaths. SES is an independent factor associated with shorter survival in HL in Brazil. Potential underlying mechanisms associated with the impact of SES are delayed diagnosis and poorer education. Educational and socio-economic support interventions must be tested in this vulnerable population.