There is a pronounced derangement in cardiovascular function in the cat after a 2- or 3-hour period during which shock is simulated in the small intestine by regional hypotension (BP = 30-35 mm Hg) during activation of vasoconstrictor nerve fibers. It has been proposed that these effects are caused by blood-borne cardiode-pressant substance(s) released from the "shocked" small intestine. To obt...

It has been reported that blockade of the inward rectifier K(+) current (IK1) facilitates termination of ventricular fibrillation. We hypothesized that partial IK1 blockade destabilizes spiral wave (SW) re-entry, leading to its termination. Optical action potential (AP) signals were recorded from left ventricles of Langendorff-perfused rabbit hearts with endocardial cryoablation. The dynamics o...

LUPUS CYSTITIS : A REPORT OF FOUR CASES Katsuhiko TAKABAYASHI, MD, Makoto SUEISHI, MD, Hisao TOMIOKA, MD, Terue IMAIZUMI, MD and Sho YOSHIDA, MD The Second Department of Internal Medicine, School of Medicine, Chiba University, Chiba Takao SUGIYAMA, MD Department of Internal Medicine, Kashima-Rousai Hospital, Hasaki Akira KIMURA, MD Department of Internal Medicine, Asahi General Hospital, Asahi ...

Glucagon has a positive inotropic effect in normal hearts but is ineffective in animals with chronic cardiac failure. To assess directly the influence of glucagon on the human myocardium, we measured contractility and activation of adenyl cyclase, the enzyme thought to mediate the inotropic action of glucagon, in left ventricular papillary muscles obtained from 12 patients at mitral valve repla...

Intravenous administration of the fatty acid oxidation inhibitor 2-tetradecylglycidic acid had no effect on the proportion of pyruvate dehydrogenase complex in the active form in heart, diaphragm or gastrocnemius muscles or in liver, kidney or adipose tissue of fed normal rats. The compound reversed the effect of 48h starvation (which decreased the proportion of active complex) in heart muscle,...

Objective: Previous studies reported that asafetida from Ferula assa-foetida Linn. species and its essential oil (AEO) have antioxidant effects. In the present study, the effect of AEO was evaluated on ischemic-reperfusion injury in isolated rat hearts. Materials and Methods: Forty-eight male Wistar rats were divided into 6 groups: 1) control group, 2) vehicle group, 3-5) AEO groups and, 6) car...

The object of the present lecture is the discussion of the group-theoretical nature of the conservation theorems for differential equations. To illustrate the use of the general conservation theorems the differential equations of mechanics are chosen.

Previous research has indicated that memories can be modified in conjunction with one’s attitudes, in particular, political beliefs. The current study extended this finding by focusing on the relationship between differing religious beliefs and false memories for news events. We predicted that religious people would be more inclined to remember fabricated news events positively depicting religi...

background and objective : sleep deprivation (sd) is caused by a host of reasons and has numerous consequences on cardiac system. in this study, we aimed to assess the preconditioning effects of acute sd on ischemia (is)-induced ventricular arrhythmias in isolated rat hearts. materials and methods : male wistar rats randomly were placed into the four groups: is-group, acute sd group, control gr...