RESUMO
Experiments on rats with isadrine induced myocardial disorder showed that glycyrram reduces the extent of myocardial inflammatory edema, inhibits an increase in the level of marker enzymes (creatine kinase, lactate dehydrogenade, asparatate aminotransferase) in the blood serum, prevents a decrease in the myocardial glycogen and an increase in the total lipids, inhibits increase in the lipid peroxidation and decrease in the antioxidant activity in the blood, and improves the ECG characteristics. These data suggest that glycyrram is a promising agent for the treatment of cardiac disorders accompanied by inflammatory and necrotic changes in myocardium, including myocarditis and myocardial infarction.
Assuntos
Ácido Glicirretínico/farmacologia , Coração/efeitos dos fármacos , Isoproterenol , Miocárdio/metabolismo , Animais , Aspartato Aminotransferases/sangue , Creatina Quinase/sangue , Eletrocardiografia , Glicogênio/metabolismo , Coração/fisiopatologia , L-Lactato Desidrogenase/sangue , Peroxidação de Lipídeos , Lipídeos/sangue , Masculino , Miocárdio/patologia , RatosRESUMO
Experiments on rats with isadrine damage to the myocardium showed that when used for preventive-therapeutic purposes 18-dehydroglycyrrhizic acid (glyderinine preparation) causes statistically significant prevention of a rise in the serum level of marker enzymes (creatine phosphokinase, lactate dehydrogenase, aspartate aminotranspherase), prevents activation of lipid peroxidation, decrease of blood serum antioxidation activity and pathological changes in the content of glycogen and total lipids in the heart, it also improves the electrocardiographic parameters, reduces myocardial inflammatory edema. The results of the study show that glyderinine possesses a marked cardioprotective effect.
Assuntos
Cardiomiopatias/tratamento farmacológico , Fármacos Cardiovasculares/uso terapêutico , Ácido Glicirretínico/análogos & derivados , Agonistas Adrenérgicos beta , Animais , Cardiomiopatias/induzido quimicamente , Cardiomiopatias/metabolismo , Cardiomiopatias/fisiopatologia , Avaliação Pré-Clínica de Medicamentos , Eletrocardiografia/efeitos dos fármacos , Ácido Glicirretínico/uso terapêutico , Isoproterenol , Peroxidação de Lipídeos/efeitos dos fármacos , Masculino , RatosRESUMO
In acute animal experiments it was shown that phytoecdizon ecdisteron (ecdisten) in some animals eliminates arrhythmia caused by the ligation of the descending branch of the left coronary artery and prevents the development of fibrillation and also corrects the hemodynamic parameters and the structure of the heart contractility, prevents the development of arrhythmias induced by aconitine and calcium chloride. The mechanism of the antiarrhythmic action is related to the membrane stabilizing effect and the improvement of the hemodynamic parameters and the heart contractility is due to an increase of the adaptative possibilities of the myocardium.
Assuntos
Antiarrítmicos , Arritmias Cardíacas/tratamento farmacológico , Doença das Coronárias/tratamento farmacológico , Ecdisterona/uso terapêutico , Contração Miocárdica/efeitos dos fármacos , Aconitina , Animais , Arritmias Cardíacas/induzido quimicamente , Arritmias Cardíacas/fisiopatologia , Cloreto de Cálcio , Gatos , Doença das Coronárias/etiologia , Doença das Coronárias/fisiopatologia , Relação Dose-Resposta a Droga , Avaliação Pré-Clínica de Medicamentos , Ecdisterona/farmacologia , Hemodinâmica/efeitos dos fármacos , Contração Miocárdica/fisiologia , RatosRESUMO
Amorphin--24-vicyanoside (C34H4O16(2)H2O)--in a dose of 10 mg/kg orally decreases the content of cholesterol, total lipids, atherogenic lipoproteids in the blood and organs of intact rats and rats with endogenous or ethanol hyperlipemia, inhibits the development of experimental atherosclerosis in rabbits induced by the combination of risk factors (cholesterol + glucose + hypodynamia), decreases the content of lipids in the blood and organs (especially in aorta), prevents the development of morphological manifestations of the aorta atherosclerosis.
Assuntos
Arteriosclerose/tratamento farmacológico , Flavonoides/uso terapêutico , Hipercolesterolemia/tratamento farmacológico , Hiperlipidemias/tratamento farmacológico , Hipolipemiantes/uso terapêutico , Animais , Arteriosclerose/sangue , Colesterol/sangue , Avaliação Pré-Clínica de Medicamentos , Feminino , Hipercolesterolemia/sangue , Hiperlipidemias/sangue , Lipídeos/sangue , Masculino , Coelhos , RatosRESUMO
Polymer proanthocyanidin from Rhodiola semenovii named epihalochin was found to exhibit a pronounced antihypoxic effect in different models of hypoxia (hypoxic, cytotoxic and hemic), to relieve the hypoxic isolated heart contracture. Therapeutic doses of epihalochin produced a transient lowering of arterial pressure, decreased to a certain degree heart rate and lengthened the phases of cardiac contractions.
Assuntos
Antocianinas/farmacologia , Biopolímeros , Plantas Medicinais , Polímeros/farmacologia , Animais , Antocianinas/uso terapêutico , Antocianinas/toxicidade , Relação Dose-Resposta a Droga , Avaliação Pré-Clínica de Medicamentos , Feminino , Cobaias , Hemodinâmica/efeitos dos fármacos , Hipóxia/tratamento farmacológico , Técnicas In Vitro , Dose Letal Mediana , Masculino , Camundongos , Contração Miocárdica/efeitos dos fármacos , Polímeros/uso terapêutico , Polímeros/toxicidade , Ratos , Estresse Psicológico/tratamento farmacológico , UzbequistãoRESUMO
It has been demonstrated in acute experiments on animals of different species that nitroesters of sodium carboxymethylcellulose have the pharmacological properties exhibited by nitroglycerin. Unlike the latter one, they exert a mild hypotensive action.
Assuntos
Carboximetilcelulose Sódica/farmacologia , Colódio/farmacologia , Metilcelulose/análogos & derivados , Nitroglicerina/farmacologia , Animais , Pressão Sanguínea/efeitos dos fármacos , Carboximetilcelulose Sódica/análogos & derivados , Carboximetilcelulose Sódica/uso terapêutico , Carboximetilcelulose Sódica/toxicidade , Gatos , Colódio/análogos & derivados , Colódio/toxicidade , Vasoespasmo Coronário/tratamento farmacológico , Cães , Avaliação Pré-Clínica de Medicamentos , Técnicas In Vitro , Camundongos , Contração Miocárdica/efeitos dos fármacos , Nitroglicerina/uso terapêutico , Nitroglicerina/toxicidade , Ratos , Fatores de TempoRESUMO
Protein biosynthesis was stimulated in liver tissue in vivo and in vitro after administration into mice of either phytoecdizone of turkesterone (0.5 mg/100 g) or of anabolic steroid compound nerobole (1 mg/100 g). Stimulation of protein biosynthesis was due to an increase in functional activity of polyribosomes and to elevation in the synthesis of protein molecules. Actinomycin D, which inhibited the stimulation of protein biosynthesis in liver tissue of mice treated with nerobole, did not affect the phenomenon in mice treated with turkesterone.
Assuntos
Fígado/efeitos dos fármacos , Metandrostenolona/farmacologia , Biossíntese de Proteínas , Animais , Sistema Livre de Células , Dactinomicina/farmacologia , Ecdisterona/análogos & derivados , Feminino , Leucina/metabolismo , Camundongos , Polirribossomos/efeitos dos fármacos , Biossíntese de Proteínas/efeitos dos fármacos , RNA Mensageiro/biossíntese , Estimulação Química , Valina/metabolismoRESUMO
Introduction of phytiexdizone-exdisterone (0.5 mg/100 g) to rats for 7 days is shown to be attended by an accelerated body weight gain and also by a rising weight of the liver, heart, kidneys and musculus tibialis anterior. In these organs the total amount of protein increases. All of the above-stated changes are more marked when the substance is given to growing rats (70--80 g). In experiments on castrated sexually immature rats the androgenic action of exdisterone, unlike that of methandrostenolone, is not demonstrable.
Assuntos
Peso Corporal/efeitos dos fármacos , Ecdisona/farmacologia , Ecdisterona/farmacologia , Biossíntese de Proteínas , Androgênios , Animais , Ecdisona/isolamento & purificação , Ecdisterona/isolamento & purificação , Masculino , Tamanho do Órgão , Próstata/efeitos dos fármacos , Ratos , Glândulas Seminais/efeitos dos fármacos , Estimulação QuímicaRESUMO
With a prolonged enteral introduction indole alkaloids vincamine (5--20 mg/kg), vinervine (5 mg/kg) and serotonin (2 mg/kg) significantly lengthen the duration of the sex cycle through extending the estrus cycle (vincamine, vinervine and serotonin) and diestrus (serotonin). Without changing the weight of the uterus the studied alkaloids tend to significantly increase the weight of the ovaries and the number of follicles therein. In test with sexually mature castrated and also sexually immature (both alkaloids) and hypophysectomized (vincamine) animals these alkaloids fail to display any estrogenic action.
Assuntos
Estro/efeitos dos fármacos , Serotonina/farmacologia , Alcaloides de Vinca/farmacologia , Animais , Castração , Feminino , Hipofisectomia , Gravidez , Ratos , Fatores de Tempo , Útero/efeitos dos fármacos , Vagina/efeitos dos fármacosRESUMO
It is shown that 6-ketoderivatives of natural sapogenins, viz. agigenin, diosgenin and alliogenin, display the anabolic activity and do not manifest any androgenic properties. The compoud IV/(25 R)-5alpha-spirostan-2alpha, 3beta, 5alpha-triol-6-OH/produces an accelerated gain of weight in rats, and also an increase in the weight of the liver, heart, kidneys, musculus tibiliasis anterior and augments the total amount of protein therein. All of the above-mentioned changes become more pronounced with the study substance introduced to young animals. Castration of sexually immature rats greatly mitigates the anabolic effect of the compound IV.