Hybrids between species are usually unviable or sterile. One possible mechanism causing reproductive isolation is incompatibility between genes from different species. These "speciation" genes are interacting components that cannot function properly when mixed with alleles from other species. To test whether such genes exist in two closely related yeast species, we constructed hybrid lines in w...

There is no comprehensive method for differentiating between fresh and frozen-thawed fish fillets. This an ongoing problem, particularly in relation to regulations. In this study, we showed the relevance of using properties mitochondria discriminate fillets from The use red muscle fibres Gilthead sea bream allowed us leave their physiological environment avoid possible alterations mitochondrial...

We report the isolation of mitochondria from the endosperm of castor beans (Ricinus communis). These mitochondria oxidized succinate, external NADH, malate and pyruvate with respiratory-control and ADP/O ratios consistent with those found previously with mitochondria from other plant sources. The mitochondria exhibited considerable sensitivity to the electron-transport-chain inhibitors antimyci...

anti-oxidant effects of propofol (2, 6-diisopropylphenol) were evaluated agains carbon tetrachloridet ccl4 -induced oxidative stress in rat liver. 30 male rats were equally divided in to 6 groups (5 rats each). group i (control), while group ii was given ccl4 (3 ml /kg/day, ip). animals of groups iii received only propofol (10 mg/kg/day, ip). group iv was given propofol+ ccl4. group v was admin...

Studies of reproductive isolation between homoploid hybrid species and their parent species have rarely been carried out. Here we investigate reproductive barriers between a recently recognized hybrid bird species, the Italian sparrow Passer italiae and its parent species, the house sparrow P. domesticus and Spanish sparrow P. hispaniolensis. Reproductive barriers can be difficult to study in h...

previous studies demonstrated that cse induces oxidative stress and its consequences on isolated mitochondria obtained from lung, heart and brain which may provide insight into the role of cse in human health and disease. the present study was carried out to further characterize and compare toxic effect of cse extract on isolated mitochondria obtained from either a directly contacting tissue (i...

A concise review of mitochondrial filamentation and its first possible applications for cancer, psychosis and obesity is provided. Only they are indicated the more essential references mentioning the first possible methods to be developed. Mitochondrial filamentation is a new field based in the more physiological isolation of mitochondria by decreasing the mechanical, thermal and chemical stres...

Mitochondria of all animal tissues, so far investigated, contain an enzyme system which catalyzes the oxidation of mesoand (-)-tartrate. Certain properties of this enzyme system, such as its extraction and coensyme requirements as well as the isolation of oxidation products of tartrate, were described in a previous publication (1). The reconstruction of Reactions’ 1 to 3 was based on the chemic...

DIABETES MELLITUS IS INCREASINGLY common throughout the world, due to both an increase in incidence and to decreased mortality of those with diabetes. Unfortunately, diabetes more than doubles the risk of cardiovascular disease in adults, and it even causes its own peculiar form of “diabetic” cardiomyopathy. These facts are conspiring, in turn, to increase the prevalence of heart failure (revie...

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