Effects of diclazuril on apoptosis and mitochondrial transmembrane potential in second-generation merozoites of Eimeria tenella. 2010

Bianhua Zhou, and Hongwei Wang, and Feiqun Xue, and Xiaoyang Wang, and Chenzhong Fei, and Mi Wang, and Tao Zhang, and Xiujuan Yao, and Peiyi He
Key Laboratory of Veterinary Drug Safety Evaluation and Residues Research, Chinese Academy of Agricultural Sciences, Shanghai Veterinary Research Institute, CAAS, Shanghai, PR China.

Diclazuril, a benzeneacetonitrile anticoccidial agent, has potent activity against various stages of Eimeria tenella (E. tenella). To study the effects of diclazuril on E. tenella merozoites, purified second-generation merozoites were obtained from infected chicken caecal tissue at 120h after inoculation by a combination of enzymatic digestion, centrifugation, erythrocytes disruption and percoll density gradient centrifugation. Ultrastructural changes were monitored by transmission electron microscopy (TEM). Apoptosis and mitochondrial transmembrane potential were determined by flow cytometry (FCM). The results showed that diclazuril induced ultrastructural changes and significantly increased the ratio of early apoptosis by 180.75% (P<0.01) and late apoptosis/necrosis by 86.82% (P<0.05) in second-generation merozoites, respectively. Compared with the infected/control group, the ratio of second-generation merozoites that lost mitochondrial function was increased by 45.04% (P<0.01) in the infected/treatment group. In conclusion, diclazuril induced morphological changes and attenuated the activity of mitochondrial transmembrane potential of merozoites, which is involved in mitochondrial-depended apoptosis in second-generation merozoites of E. tenella.

UI MeSH Term Description Entries
D008297 Male Males
D008564 Membrane Potentials The voltage differences across a membrane. For cellular membranes they are computed by subtracting the voltage measured outside the membrane from the voltage measured inside the membrane. They result from differences of inside versus outside concentration of potassium, sodium, chloride, and other ions across cells' or ORGANELLES membranes. For excitable cells, the resting membrane potentials range between -30 and -100 millivolts. Physical, chemical, or electrical stimuli can make a membrane potential more negative (hyperpolarization), or less negative (depolarization). Resting Potentials,Transmembrane Potentials,Delta Psi,Resting Membrane Potential,Transmembrane Electrical Potential Difference,Transmembrane Potential Difference,Difference, Transmembrane Potential,Differences, Transmembrane Potential,Membrane Potential,Membrane Potential, Resting,Membrane Potentials, Resting,Potential Difference, Transmembrane,Potential Differences, Transmembrane,Potential, Membrane,Potential, Resting,Potential, Transmembrane,Potentials, Membrane,Potentials, Resting,Potentials, Transmembrane,Resting Membrane Potentials,Resting Potential,Transmembrane Potential,Transmembrane Potential Differences
D008928 Mitochondria Semiautonomous, self-reproducing organelles that occur in the cytoplasm of all cells of most, but not all, eukaryotes. Each mitochondrion is surrounded by a double limiting membrane. The inner membrane is highly invaginated, and its projections are called cristae. Mitochondria are the sites of the reactions of oxidative phosphorylation, which result in the formation of ATP. They contain distinctive RIBOSOMES, transfer RNAs (RNA, TRANSFER); AMINO ACYL T RNA SYNTHETASES; and elongation and termination factors. Mitochondria depend upon genes within the nucleus of the cells in which they reside for many essential messenger RNAs (RNA, MESSENGER). Mitochondria are believed to have arisen from aerobic bacteria that established a symbiotic relationship with primitive protoeukaryotes. (King & Stansfield, A Dictionary of Genetics, 4th ed) Mitochondrial Contraction,Mitochondrion,Contraction, Mitochondrial,Contractions, Mitochondrial,Mitochondrial Contractions
D009570 Nitriles Organic compounds containing the -CN radical. The concept is distinguished from CYANIDES, which denotes inorganic salts of HYDROGEN CYANIDE. Nitrile
D011201 Poultry Diseases Diseases of birds which are raised as a source of meat or eggs for human consumption and are usually found in barnyards, hatcheries, etc. The concept is differentiated from BIRD DISEASES which is for diseases of birds not considered poultry and usually found in zoos, parks, and the wild. Disease, Poultry,Diseases, Poultry,Poultry Disease
D011897 Random Allocation A process involving chance used in therapeutic trials or other research endeavor for allocating experimental subjects, human or animal, between treatment and control groups, or among treatment groups. It may also apply to experiments on inanimate objects. Randomization,Allocation, Random
D002645 Chickens Common name for the species Gallus gallus, the domestic fowl, in the family Phasianidae, order GALLIFORMES. It is descended from the red jungle fowl of SOUTHEAST ASIA. Gallus gallus,Gallus domesticus,Gallus gallus domesticus,Chicken
D003048 Coccidiosis Protozoan infection found in animals and man. It is caused by several different genera of COCCIDIA. Besnoitiasis,Besnoitiosis,Besnoitiases,Besnoitioses,Coccidioses
D003049 Coccidiostats Agents useful in the treatment or prevention of COCCIDIOSIS in man or animals. Anticoccidial Agents,Agents, Anticoccidial
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia

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