RESUMO
It is shown that L-cystine-bis-(N,N-beta-chloroethyl)-hydrazide-hydro-bromide possesses strong (50-100%) inhibitory effect in vivo against myeloma P-8, carcinosarcoma Walker, lymphosarcoma Pliss, sarcoma Yoshida, sarcoma Jensen and sarcoma 180 in doses 5-12 mg/kg/day. No suppression of the growth of Ehrlich ascites tumor was observed. The acute toxicity (LD50) of this substance on mice and rats is 71 mg/kg and 47 mg/kg respectively.
Assuntos
Neoplasias Experimentais/tratamento farmacológico , Compostos de Mostarda Nitrogenada/uso terapêutico , Alquilação , Animais , Carcinoma de Ehrlich/tratamento farmacológico , Gatos , Cistina/análogos & derivados , Cistina/uso terapêutico , Dose Letal Mediana , Camundongos , Camundongos Endogâmicos BALB C , Mieloma Múltiplo/tratamento farmacológico , Transplante de Neoplasias , Ratos , Sarcoma Experimental/tratamento farmacológico , Transplante HomólogoRESUMO
The effect of several derivatives of ureidosuccinic acid on the growth of Escherichia coli 387, Staphylococcus aureus strain 209 and its mutant UV-2, Sarcina lutea, Candida tropicalis and Neurospora crossa 9863 as pre-screening systems for antitumor activity was studied. It was found that dihydrazide of D,L-ureidosuccinic acid (DHUA) had a marked antibacterial activity. The inhibitory effect of DHUA on N. crassa could not be removed by aspartic acid, ureidosuccinic acid, dihydroorotic acid, orotic acid, uracil or cytosine. DHUA suppressed the growth of Myeloma P-8 by 38%, that of Sarcoma 180 by 12% and that of Yoshida sarcoma by 19%. No effect was found on the growth of Lymphosarcoma Pliss.
Assuntos
Antineoplásicos/farmacologia , Bactérias/efeitos dos fármacos , Succinatos/farmacologia , Candida/efeitos dos fármacos , Escherichia coli/efeitos dos fármacos , Neurospora crassa/efeitos dos fármacos , Sarcina/efeitos dos fármacos , Comportamento Sexual , Staphylococcus aureus/efeitos dos fármacosRESUMO
The antimycotic effect of 5-fluoroorotic acid (FOA) was studied in experimental and clinical conditions. The experiments in vitro were performed on 21 strains of fungi isolated mainly from clinical material. The effect of FOA was compared with those of the structurally related drug 5-fluorocytosine. The clinical study was performed on 40 patients aged 18 to 75 years with mycological diseases. FOA in different dosage forms was applied topically 2 to 3 times daily for 30 days. Microscopic and cultured mycological studies were performed before and after treatment. The results showed that FOA possesses a well-expressed anticandidal effect close to that of 5-fluorocytosine, as well as moderate antidermatophytal effects. Clinical studies of 1% FOA cream showed good therapeutic effects similar to that of Ung. Whitfield, but 55% of the patients developed relapse of the lesions after discontinuation of the treatment. Higher concentrations of FOA included in milk suspension and powder induced severe side effects of local irritability.
Assuntos
Antifúngicos , Arthrodermataceae/efeitos dos fármacos , Candida/efeitos dos fármacos , Dermatomicoses/tratamento farmacológico , Ácido Orótico/análogos & derivados , Adolescente , Adulto , Idoso , Animais , Feminino , Flucitosina/farmacologia , Humanos , Linimentos , Masculino , Camundongos , Testes de Sensibilidade Microbiana , Pessoa de Meia-Idade , Pomadas , Ácido Orótico/farmacologia , PósRESUMO
Antibacterial and antitumor activity of 10 platinum complexes of N3-phenylsubstituted amidrazones and hydrazinopyrimidines has been studied. It has been found that the platinum complexes of amidrazones, containing substituents in the benzene nuclear or in the NH2-group, exhibit a better antibacterial activity while those without substituents in their benzene nuclears have a pronounced antibacterial activity mostly on bacterial test-systems used in the prescreening of antitumor agents (S. lutea and UV-2). Most of the studid platinum complexes of hydrazinopyrimidines show inhibitory effect on the bacterial strains used in the prescreening of antitumor agents. The antitumor activity of platinum complexes has been tested on L1210 leukemia, adenocarcinoma 755 and Lewis carcinoma. An inhibitory effect is observed in the case of adenocarcinoma 755 with the cis-isomer of the platinum complex of N3-p-tolylbenzamidrazone (the tumor growth was 60% suppressed).
Assuntos
Anti-Infecciosos/farmacologia , Antineoplásicos/farmacologia , Compostos Organoplatínicos/farmacologia , Animais , Camundongos , Neoplasias Experimentais/patologia , Piridinas/farmacologia , Pirimidinas/farmacologiaRESUMO
The authors investigated the antibacterial activity of some cysteine sulphonamides substituted in the sulphonamide group as well as that of some peptides containing cysteine sulphonamide. They found that the antibacterial activity of these compounds was in part considerably stronger than that of cysteine sulphonamide.
Assuntos
Bactérias/efeitos dos fármacos , Cisteína/análogos & derivados , Peptídeos/farmacologia , Sulfonamidas/farmacologia , Antibacterianos/farmacologia , Cisteína/farmacologia , Interações Medicamentosas , Testes de Sensibilidade MicrobianaRESUMO
The N,N-di(2-chlorethyl)hydrazides of the following alpha-aminocarboxylic acid antimetabolites: methioninsulphoxide, ethionine, 2-, 3- and 4-fluorophenylalanine, 4-nitrophenylalanine and 2,2-dimethyl-thiazolidine-4-carboxylic acid were synthesized. Preliminary studies of the activity on experimental tumour models were carried out. It was shown that these compounds have a high antitumour effect (80-100%) on sarcoma Yoshida and carcinosarcoma Walker.
Assuntos
Aminoácidos/síntese química , Antimetabólitos/síntese química , Antineoplásicos/síntese química , Compostos de Mostarda Nitrogenada/síntese química , Aminoácidos/farmacologia , Animais , Antimetabólitos/farmacologia , Antineoplásicos/farmacologia , Bactérias/efeitos dos fármacos , Carcinoma 256 de Walker/tratamento farmacológico , Testes de Sensibilidade Microbiana , Compostos de Mostarda Nitrogenada/farmacologia , Sarcoma de Yoshida/tratamento farmacológicoRESUMO
N,N-Di(2-chlorethyl)hydrazides of the following alpha-amino-carboxylic acids were synthesized: glycine, valine, norvaline, lysine, phenylalanine, tyrosine, cystine, homocystine, aspartic and glutamic acid as well as the N,N-diethylhydrazides of glycine, phenylalanine and cystine. The N,N-di-(2-chlorethyl)hydrazides have a pronounced effect on solid tumours (tumour growth inhibition by 30-100%), whereas their inhibition activity with ascite tumours is negligible. N,N-diethylhydrazides show analogous but less expressed biological effect.
Assuntos
Antineoplásicos/síntese química , Hidrazinas/síntese química , Compostos de Mostarda Nitrogenada/síntese química , Fenômenos Químicos , Química , Escherichia coli/efeitos dos fármacos , Hidrazinas/farmacologia , Hidrazinas/toxicidade , Neoplasias Experimentais/tratamento farmacológico , Compostos de Mostarda Nitrogenada/farmacologia , Compostos de Mostarda Nitrogenada/toxicidadeRESUMO
On reacting pyrimidine metabolites containing a carboxyl or sulfhydryl group with methylhydrazine or N-benzyl-N'-methylhydrazine, various methylhydrazonium salts of these metabolites were synthetized, e.g., the salts of 5-fluororotic acid, 5-azaorotic acid, 2-thiouracil-5-carboxylic acid and 2-thio-6-azathymine. Some of these salts exhibited a more marked antibacterial activity against St. aureus and several of its mutants as well as a greater antitumoral activity against different transplantable tumours than their single components.
Assuntos
Anti-Infecciosos/síntese química , Antineoplásicos/síntese química , Pirimidinas/síntese química , Animais , Fenômenos Químicos , Química , Camundongos , Neoplasias Experimentais/tratamento farmacológico , Pirimidinas/farmacologia , Ratos , Ratos EndogâmicosRESUMO
Pyruvic acid semi- and thiosemicarbazones (1 and 2, respectively) were tested as inhibitors of bacterial, fungal, experimental tumour and plant cell growth. 1 and 2 displayed a growth-inhibitory effect in vitro against different bacterial strains, and especially against St. aureus mutant UV-2 and S. lutea. The compounds proved to have low activity in vivo against L 1210 and P 388 leukemia, adenocarcinoma 755 and melanoma B 16. 2 inhibited strongly the growth of cultured cells of Lycopersicon esculentum (100% inhibition at a concentration of 1,5 mumol/ml) while 1 was not active.
Assuntos
Antibacterianos/farmacologia , Antineoplásicos/farmacologia , Inibidores do Crescimento/farmacologia , Piruvatos/farmacologia , Semicarbazonas/farmacologia , Tiossemicarbazonas/farmacologia , Animais , Antifúngicos/farmacologia , Células Cultivadas , Camundongos , Camundongos Endogâmicos , Neoplasias Experimentais/tratamento farmacológico , Desenvolvimento Vegetal , Plantas/efeitos dos fármacosAssuntos
Aldeídos/síntese química , Anti-Infecciosos/síntese química , Antineoplásicos/síntese química , Glioxal/síntese química , Compostos Organoplatínicos , Platina/síntese química , Piruvatos/síntese química , Animais , Fenômenos Químicos , Química , Glioxal/farmacologia , Camundongos , Camundongos Endogâmicos C57BL , Testes de Sensibilidade Microbiana , Neoplasias Experimentais/tratamento farmacológico , Platina/farmacologia , Piruvatos/farmacologiaAssuntos
Anti-Infecciosos/síntese química , Guanidinas/síntese química , Hidrazonas/síntese química , Animais , Antibacterianos , Anti-Infecciosos/farmacologia , Antineoplásicos/farmacologia , Bactérias/efeitos dos fármacos , Fungos/efeitos dos fármacos , Guanidinas/farmacologia , Hidrazonas/farmacologia , Leucemia L1210/tratamento farmacológico , Camundongos , Testes de Sensibilidade Microbiana , Leveduras/efeitos dos fármacosRESUMO
The conversion of six dihydroorotate analogues by the dihydroorotate dehydrogenase (DHO-DH) of plant and animal mitochondria was studied. In the case of plant DHO-DH the dehydrogenation of analogues was as follows: Dihydroorotic acid (DHO) (control, 100%), DHO-hydrazide (40%), azaDHO (13%), azaDHO-ethyl ester (23%), azaDHO-hydrazide (11%), dihydrouracil (0%), dihydrothymine (0%). When animal DHO-DH was used the analogues were practically not dehydrogenated. These compounds were also tested as inhibitors of DHO-dehydrogenation. AzaDHO, azaDHO-hydrazide and azaDHO-ethylester inhibited this reaction by 75, 70% and 60%, respectively, for plant DHO-DH. AzaDHO and azaDHO-ethylester inhibited this reaction to 90% and 70%, respectively, for animal enzyme. The other analogues had no effect. The compounds showed a moderate antibacterial activity. AzaDHO was more active than azaDHO-ethyl ester and azaDHO-hydrazide. A considerable inhibitory effect of azaDHO and azaDHO-ethyl ester was observed on the growth of St. aureus mutant UV-2 and S. lutea. The analogues were little active against the experimental mouse tumors leukemia L 1210, Lewis lung carcinoma (LLC) and B-16 melanoma. AzaDHO-ethyl ester and azaDHO-hydrazide inhibited the growth of LLC by 59% and 56%, respectively. In addition, the effect of analogues on the growth of plant cells was studied. AzaDHO and azaDHO-ethyl ester inhibited the growth of tomato cells in suspension culture by 10% and 41%, respectively.
Assuntos
Ácido Orótico/análogos & derivados , Oxirredutases/antagonistas & inibidores , Animais , Células Cultivadas , Di-Hidro-Orotato Desidrogenase , Ensaios de Seleção de Medicamentos Antitumorais , Testes de Sensibilidade Microbiana , Mitocôndrias Hepáticas/enzimologia , Oxirredutases atuantes sobre Doadores de Grupo CH-CH , Desenvolvimento Vegetal , Plantas/efeitos dos fármacos , Plantas/enzimologia , RatosRESUMO
It has been demonstrated that the hydrazide and the ethyl ester of 2,2'-anhydro-1-(beta-D-arabinofuranosyl) orotic acid inhibit selectively the multiplication of some DNA-containing viruses (PsRV, VV, AdV5), suppress the growth of E. coli and St. aureus in vitro and exhibit an antitumor effect with Lewis lung carcinoma and sarcoma 298.