The retention of respiratory control ("survival") by mitochondria held at 25 C was studied in relation to the ripening of two varieties of avocado (Persea americana Mill. var. ;Fuerte' and ;Hass') and one variety of pear (Pyrus communis. L. var. ;Bartlett') fruit. The survival of avocado mitochondria increased from 8 to 10 hours when isolated from unripe, preclimacteric fruit, to 48 hours when ...

Fish embryos/UV irradiation/Strain difference Embryos of three different inbred strains and one substrain of Oryzias latipes were irra diated with UV light (25 to 300 J/m2) at the morula stage. Dose-dependent decrease in the surviving fraction was observed in embryos of all strains when examined at optic bud forma tion stage (Stage 19). It differed, however, in extent among different strains ex...

Background The fundamental determinant of the natural history of Chagas' disease is cardiac involvement. Methods and Results We studied 104 male patients with congestive heart failure due to Chagas' disease to estimate the survival distribution function and to evaluate age, functional class (FC), maximal oxygen consumption (Vo2max ), and ejection fraction (EF) as predictors of survival. Statist...

BackgroundThe influence of preoperative clinical, hemodynamic, and surgical procedures on long-term prognosis after combined aortic and mitral valve surgery is not well studied. Methods and ResultsOne hundred seventy patients who underwent surgery for chronic combined aortic and mitral valvular disease between 2004 and 2014 were followed up for an average of 5.3 years. The perioperative mortali...

Background: Various MTT assay methods are proposed to obtain the cell sur- vival parameters.Objective: Determining the survival curve characteristics of two cancerous cells of interest based on a common and a novel MTT assay method after exposing them to ionizing radiation.Method: A common and a novel MTT assay method were used and compared for obtaining the F10B16 melanoma and 4T1 breast adeno...

Background: Among the enterococci strains, Enterococcus faecalis is considered as one of the important nosocomial pathogens affecting immunocompromised patients. In this study, the immunogenicity of PpiC, GelE, and VS87_01105 proteins against enterococcal infection was investigated in a mice model. Methods: The genes encoding these proteins were cloned into pET21a expression vector, and the rec...

PURPOSE This study compared single-fraction to multi-fraction short-course radiation therapy (RT) for symptomatic metastatic epidural spinal cord compression (MESCC) in patients with limited survival prognosis. METHODS AND MATERIALS A total of 121 patients who received 8 Gy × 1 fraction were matched (1:1) to 121 patients treated with 4 Gy × 5 fractions for 10 factors including age, sex, perfo...

BACKGROUND High-precision radiation therapy techniques such as IMRT or sterotactic radiosurgery, delivers more complex treatment fields than conventional techniques. The increased complexity causes longer dose delivery times for each fraction. The purpose of this work is to explore the radiobiologic effect of prolonged fraction delivery time on tumor response and survival in vivo. METHODS 1-c...