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Mitochondrial NADP-specific isocitrate dehydrogenase (ICDH) partially purified from rabbit adrenals is sensitive to low concentrations of Ca2+. In the absence of Ca2+ (addition of 1 mM EGTA) the Km of ICDH for DL-isocitrate was 143 jaM, and in the presence of about 10 jaM Ca2+ (EGTA-Ca2+ buffer) it was decreased to 55 ¿iM. The JCm value of ICDH for NADP was similar in the absence (4.4 jxM) and in the presence (5.0 jiM) of Ca2+. The Km of mitochondrial NADP-ICDH for DL-isocitrate was higher than that of cytoplasmic NADP-ICDH from the same source.
The studies were carried out on the claustrum of 8 adult rabbits. Four types of neurons were distinguished: 1. Multipolar neurons, which have dendritic trunks either with conus (multipolar polygonal perikarya) or without conus (multipolar rounded perikarya). Both subdivisions of the multipolar neurons have 3–6 dendritic trunks. Only some branches of these trunks have spines. An axon emerges mainly from the cell body, rarely from the initial part of the dendritic trunk. 2. Bipolar neurons with fusiform or rounded perikarya; they have two dendrites covered with spines. An axon originates directly from the cell body or from one of the dendritic trunks. 3. Triangular neurons, which have three dendritic branches with spines. An axon emerges directly from the soma, often near the primary dendritic trunk. 4. Pear-shaped neurons with one or two dendritic trunks arise from one pole of the cell body and with an axon that originates from the opposite side of the perikaryon. The dendrites are covered with spines.
Delayed tendon healing is still found to be among the complications that occur most often after tendon repair. The role of local injection of Artemisia absinthium was evaluated in healing of experimental Achilles tendon injury in rabbits. In nine adult New Zealand rabbits a partial thickness tenotomy was created on both hindlimbs. A. absinthium extract and normal saline were respectively injected daily to treatment and control groups for three days. On the day 7 after injury, the tendon sections showed that healing rate in A. absinthium treated group was higher than that in control group. Furthermore, at days 14 and 28, comparison between A. absinthium treated group and control group demonstrated that A. absinthium increased the healing rate but with no significance. Results of this study have showed that application of A. absinthium extract can improve healing process of damaged Achilles tendon.
The goal of the studies was to evaluate the protective value of vaccines against pasteurellosis in rabbits. The vaccines comprised antigens to serotypes 3 and 12 of Pasteurella multocida with two different adjuvants: emulsigen and aluminium hydroxide gel. The two vaccines given subcutaneusly either once or twice at a dose of 1 ml protected rabbits markedly against intranasal infection with the virulent strains of examined serotypes. A substantial efficacy of these vaccines was supported by the occurrence of specific precipitins against somatic antigens of serotypes 3 and 12 present in the sera of immunised rabbits even 5 weeks after vaccination
The connections between two parts of the claustrum in the rat and rabbit were studied using the highly fluorescent lipophilic carbocyanine dye (DiI). After the application of DiI crystal into the endopiriform nucleus, labeled fibers in the insular claustrum were observed in its part directly neighboring the insular cortex and capsula externa. Additionally, numerous projections into the piriform, insular and entorhinal cortices were present. The presence of connections between the endopiriform nucleus and insular claustrum suggests its role concerned with the processes taking part in the allocortical regions as well as in the limbic system.
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