Vascularized adipose tissue engineering: moving towards soft tissue reconstruction.

Soft tissue defects are a common clinical challenge mostly caused by trauma, congenital anomalies and oncological surgery. Current soft tissue reconstruction options include synthetic materials (fillers and implants) and autologous adipose tissue transplantation through flap surgery and/or lipotransfer. Both reconstructive options hold important disadvantages to which vascularized adipose tissue engineering (VATE) strategies could offer solutions. In this review, we first summarized pivotal characteristics of functional adipose tissue such as the structure, function, cell types, development and extracellular matrix (ECM). Next, we discussed relevant cell sources and how they are applied in different state-of-the-art VATE techniques. Herein, biomaterial scaffolds and hydrogels, ECMs, spheroids, organoids, cell sheets, three dimensional printing and microfluidics are overviewed. Also, we included extracellular vesicles and emphasized their potential role in VATE. Lastly, current challenges and future perspectives in VATE are pointed out to help to pave the road towards clinical applications.

6-Month Evaluation of a Transcatheter Aortic Valve (Myval) in a Novel Ovine, Supra-Aortic Banding Model.

The aim of the study was to evaluate a balloon expandable transcatheter heart valve (THV) system (Myval) at 6-month follow-up in ovine banding model. Eleven THV systems were implanted via carotid approach. There were 2 procedure-related deaths and 2 premature deaths. At 6 months all valves that completed follow-up (n = 7) were functional, with no significant regurgitation, calcification, thrombi, or vegetation. Mean pressure gradient was 21.9 ± 11 mm Hg, maximum velocity = 3.3 ± 1 m/s, and ejection fraction was 53.3 ± 6%. Myval THV showed optimal hemodynamic performance and biocompatibility.

Evaluation of the Energy Density for Burning Disaggregated and Pelletized Coffee Husks.

Coffee husks represent about 12 wt % of coffee grains, generating a significant impact on the environment because of its inadequate disposal. In Colombia, this waste presents an energy resource opportunity equivalent to over 49,106 TJ per year. However, several challenges related to this type of biomass, such as the moisture content, the irregular shapes, and the low bulk density, make its use difficult in current burners. Thus, in this paper, the combustion of coffee husk pellets was studied in detail to design a high-efficiency burner to produce energy for coffee drying. The pellets were prepared in a pelletizer with 15% moisture and 20% yield and burned in a bench-scale lateral reactor to determine the energy density. It was found that the combustion properties of coffee husk depend on the specifics of the pelleting process. The energy density values were I v = 0.789 MW/m3 and I g = 0.007 MW/m2, which could be used to design the combustion chamber for coffee husk burning.

Evaluación del esquema terapéutico 2 HRSZ/4 H2 R2 en tuberculosis pulmonar bacilífera del adulto / Evaluation of therapeutic schedule 2 HRSZ/4 H2 R2 in bacilliferous lung tuberculosis of the adult

Se evalúa la efectividad del esquema terapéutico 2 HRZS 4 H2 R2 aplicado en modalidad autoadministrada sobre 76 pacientes de ambos sexos con edades comprendidas entre los 15 y 60 años, con diagnóstico de tuberculosis pulmonar bacilífera confirmada mediante el cultivo, vírgenes de tratamiento, asistidos en el Dispensario de Adultos de la Liga Argentina contra la Tuberculosis durante el año 1983-1984. Se registraron 7 abandonos después del segundo mes de tratamiento (9,2%), finalizando el mismo 69 enfermos, con dos fracasos terapéuticos lo que indica una efectividad del 97,2% para el esquema estudiado. La negativización del cultivo del esputo o lavado gástrico al segundo mes de tratamiento fue del 94,7%. El seguimiento de los 67 enfermos dados de alta a lo largo de 24 meses mostró dos recaídas (2,9%). Se registró intolerancia severa a alguma de las drogas en dos casos (2,6%), lo que obligó a su suspensión. Concluyendo, se estableció la efectividad del esquema aplicado, el bajo número de tomas de medicación, su facilidad para regímenes autoadministrados y su excelente tolerancia, lo que lo vuelve útil para emplearlo en programas de Salud Pública

Tratamiento de la tuberculosis pulmonar bacilífera del adulto: evaluación de una asociación isoniacida-rifampicida-pirazinamida a dosis fijas en un comprimido / Treatment of the bacillary pulmonary tuberculosis of adults: evaluation of an association of isoniazid-rifampicin-pyrazinamide at fixed doses in a tablet

Se evalúa la efectividad y tolerancia de la asociación de isoniacida, rifampicina y pirazinamida a dosis fijas en comprimidos, p ara el tratamiento de la tuberculosis pulmonar bacilífera en su fase inicial. Los resultados fueron similares a los del empleo de las tres drogas por separado, con la ventaja de su fácil y cómoda administración

Evaluación del esquema terapéutico: 2HRZS/6 H2R2 en tuberculosis pulmonar bacilífera del adulto / Evaluation of the therapeutic trial 2HRZS/6 H2R2 in bacilliferous pulmonary tuberculosis in the adult

En el presente estudio se evalúa la efectividad a largo plazo del esquema terapéutico 2HRZS/6 H2R2 aplicado en la Liga Argentina contra la Tuberculosis durante el bienio 1982/83, obteniéndose sobre 120 pacientes que completaron el tratamiento un 100% de negativización al alta. Fueron controlados entre los 12 y 24 meses del alta 94 pacientes, sin detectarse recaídas