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At least 649 records · Page 36Linked to original sources
PubMed1981

[The effect of thyroid hormone administration and its exclusion on the development of cardiac hypertrophy in rabbits].

The authors, using rabbits for their experiments (26), studied the effect of application of thyroid hormones (Thyreoiodine Spofa) and that exclusion of these hormones by means of thyroidectomy on the mass of the heart, the concentration of nucleic acids and proteins in the subcellular structures of the heart muscle of intact animals. They observed that administration of hormones of the thyroid gland in a relatively short time led to hyperthrophy of the heart, increased concentration of ribonucleic acid and to modifications of the concentration of proteins in the subcellular structures of the heart muscle. Exclusion of the thyroid hormones, on the other hand, caused a decrease of the mass of the myocardium, decrease concentrations of RNA, DNA and also that of the proteins of the mitochondrial and myofibrillar fractions of the myocardium. The authors express the opinion that the thyroid hormones may participate in the evolution of hypertrophy of the heart muscle directly by stimulating synthesis of nucleic acids and proteins. Indirectly they may influence the process of hypertrophy through their heamodynamic actions by means of which they change the load of the heart.

Animals↗
PubMed1976

[Effect of chronic stimulation of the negative and positive emotionogenic centers of the hypothalamus on development of cardiac arrhythmias].

Chronic experiments were conducted on 46 rabbits; a study was made of the changes in cardiac activity arising in prolonged (up to 1--2 weeks) electric stimulation of the ventro-median nuclei of the hypothalamus. Disturbances of the cardiac rhythm in the form of tachycardia, atrial flutter and fibrillation, ventricular extrasystole and paroxysmal ventricular tachysystole occurred mostly during the first days of stimulation and ceased after inderal infusion. Functional "weakness" of the cardiac pacemakers was revealed in the animals subjected to 1--2-week stimulation of the ventromedian nuclei. This was indicated by the post-stimulation suppression of the pacemaker automaticity and the appearance of Liciani's periods. Disturbances of the cardiac rhythm originating in stimulation of the ventromedian nuclei ceased in stimulation of the lateral hypothalamic field.

Animals↗
PubMed1981

Doxorubicin and cyclophosphamide chemotherapy for disseminated endometrial cancer.

Twenty-six cases of metastatic adenocarcinoma of the endometrium treated with doxorubicin hydrochloride (Adriamycin) and cyclophosphamide at M. D. Anderson Hospital and Tumor Institute were retrospectively analyzed. Thirteen patients were treated initially for disseminated disease and 13 for a recurrence. Eight of 26 patients, or 31%, showed a partial response. There were no complete responses. The median duration of remission was 4 months, with a range of 2 to 12 months. Previous exposure to progestins did not significantly affect subsequent response to doxorubicin and cyclophosphamide. Toxicity from chemotherapy was moderate. Four patients (15%) developed serious myelosuppression, 2 developed cardiac arrhythmia, and 1 developed a doxorubicin extravasation. No deaths were attributable to chemotherapy. The combination of doxorubicin and cyclophosphamide has demonstrable, albeit limited, activity against metastatic endometrial cancer.

Adenocarcinoma↗