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1.
Pharm Biol ; 55(1): 1489-1499, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28367666

RESUMO

CONTEXT: Abnormal angiogenesis and evasion of apoptosis are hallmarks of cancer. Accordingly, anti-angiogenic and pro-apoptotic therapies are effective strategies for cancer treatment. Medicinal plants, namely, Eugenia jambolana Lam. (Myrtaceae), Musa paradisiaca L. (Musaceae), and Coccinia indica Wight & Arn. (Cucurbitaceae), have not been greatly investigated for their anticancer potential. OBJECTIVE: We investigated the anti-angiogenic and pro-apoptotic efficacy of ethyl acetate (EA) and n-butanol (NB) extracts of E. jambolana (seeds), EA extracts of M. paradisiaca (roots) and C. indica (leaves) with respect to mammary neoplasia. MATERIALS AND METHODS: Effect of extracts (2-200 µg/mL) on cytotoxicity and MCF-7, MDA-MB-231 and endothelial cell (EC) proliferation and in vitro angiogenesis were evaluated by MTT, 3[H]thymidine uptake and EC tube formation assays, respectively. In vivo tumour proliferation, VEGF secretion and angiogenesis were assessed using the Ehrlich ascites tumour (EAT) model followed by rat corneal micro-pocket and chicken chorioallantoic membrane (CAM) assays. Apoptosis induction was assessed by morphological and cell cycle analysis. RESULTS: EA extracts of E. jambolana and M. paradisiaca exhibited the highest cytotoxicity (IC50 25 and 60 µg/mL), inhibited cell proliferation (up to 81%), and tube formation (83% and 76%). In vivo treatment reduced body weight (50%); cell number (16.5- and 14.7-fold), secreted VEGF (∼90%), neoangiogenesis in rat cornea (2.5- and 1.5-fold) and CAM (3- and 1.6-fold) besides EAT cells accumulation in sub-G1 phase (20% and 18.38%), respectively. DISCUSSION AND CONCLUSION: Considering the potent anti-angiogenic and pro-apoptotic properties, lead molecules from EA extracts of E. jambolana and M. paradisiaca can be developed into anticancer drugs.


Assuntos
Inibidores da Angiogênese/farmacologia , Antineoplásicos Fitogênicos/farmacologia , Carcinoma de Ehrlich/prevenção & controle , Membrana Corioalantoide/irrigação sanguínea , Cucurbitaceae/química , Musa/química , Neovascularização Patológica , Neovascularização Fisiológica/efeitos dos fármacos , Extratos Vegetais/farmacologia , Syzygium/química , Fator A de Crescimento do Endotélio Vascular/farmacologia , 1-Butanol/química , Acetatos/química , Inibidores da Angiogênese/isolamento & purificação , Animais , Antineoplásicos Fitogênicos/isolamento & purificação , Apoptose/efeitos dos fármacos , Carcinoma de Ehrlich/sangue , Carcinoma de Ehrlich/patologia , Movimento Celular/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Embrião de Galinha , Neovascularização da Córnea/patologia , Neovascularização da Córnea/fisiopatologia , Neovascularização da Córnea/prevenção & controle , Relação Dose-Resposta a Droga , Feminino , Pontos de Checagem da Fase G1 do Ciclo Celular/efeitos dos fármacos , Células Endoteliais da Veia Umbilical Humana/efeitos dos fármacos , Humanos , Células MCF-7 , Camundongos , Fitoterapia , Extratos Vegetais/isolamento & purificação , Folhas de Planta , Raízes de Plantas/química , Plantas Medicinais , Ratos Wistar , Sementes/química , Fatores de Tempo , Carga Tumoral/efeitos dos fármacos
2.
Afr J Tradit Complement Altern Med ; 10(5): 380-385, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-24311854

RESUMO

The objectives of the study were to investigate the anti-tumour activity of Pinellia ternata polysaccharide in vivo, and to preliminarily explore the possible mechanism of its antitumour action. Mouse model of Ehrlich ascites tumour (solid tumour) was used to detect the serum SOD, MDA and GSH-Px levels in mouse and to measure the tumour inhibition rate and survival prolongation rate. The results showed that Pinellia ternata polysaccharide had some tumour inhibitory effect. Tumour weight of Pinellia ternata polysaccharide high-dose group was highly significantly different (P<0.01) compared with the model group. Tumour weight between Pinellia ternata polysaccharide medium-dose group and model group also had a significant difference (P<0.05). Moreover, in the Pinellia ternata polysaccharide high-dose group, survival prolongation rate of ascites tumour mice reached 62.23%, and mouse serum SOD, MDA and GSH-Px levels also rose in varying degrees. The study concluded that Pinellia ternata polysaccharide extract had some in vivo anti-tumour effects, which were probably associated with the enhancement of the body's ability to scavenge excess free radicals by improving the body's enzyme activity.


Assuntos
Antineoplásicos Fitogênicos/uso terapêutico , Antioxidantes/uso terapêutico , Carcinoma de Ehrlich/tratamento farmacológico , Fitoterapia , Pinellia/química , Extratos Vegetais/uso terapêutico , Polissacarídeos/uso terapêutico , Animais , Antineoplásicos Fitogênicos/farmacologia , Antioxidantes/metabolismo , Antioxidantes/farmacologia , Carcinoma de Ehrlich/sangue , Carcinoma de Ehrlich/patologia , Modelos Animais de Doenças , Relação Dose-Resposta a Droga , Feminino , Glutationa/sangue , Masculino , Malondialdeído/sangue , Camundongos , Camundongos Endogâmicos , Extratos Vegetais/farmacologia , Polissacarídeos/farmacologia , Superóxido Dismutase/sangue
3.
Phytomedicine ; 20(14): 1288-96, 2013 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-23867650

RESUMO

Pea (Pisum sativum L.) lectin is known to have interesting pharmacological activities and of great interest on biomedical research. In the current research pea lectin was purified followed by ion exchange chromatography on DEAE column and affinity chromatography on glucose-sepharose column. The lectin shown 11.7-84% inhibitory effect against Ehrlich ascites carcinoma (EAC) cells at the concentration range of 8-120 µg/ml in RPMI 1640 medium as determined by MTT assay. Pea lectin was also shown 63% and 44% growth inhibition against EAC cells in vivo in mice when administered 2.8 mg/kg/day and 1.4 mg/kg/day (i.p.) respectively for five consequent days. When Pea lectin injected into the EAC bearing mice for 10 days its significantly increased the hemoglobin and RBC with the decreased of WBC levels toward the normal. Apoptotic cell morphological change of the treated EAC cells of mice was determined by fluorescence and optical microscope. Interestingly, cell growth inhibition of the lectin was significantly reduced in the presence of caspase inhibitors. Treatment with the lectin caused the cell cycle arrest at G2/M phase of EAC cells which was determined by flow cytometry. The expression of apoptosis-related genes, Bcl-2, Bcl-X and Bax was evaluated by reverse transcriptase polymerase chain reaction (RT-PCR). Intensive increase of Bax gene expression and totally despaired of Bcl-2 and Bcl-X gene expression were observed in the cells treated with Pea lectin for five consecutive days.


Assuntos
Antineoplásicos Fitogênicos/uso terapêutico , Apoptose/efeitos dos fármacos , Carcinoma de Ehrlich/tratamento farmacológico , Pontos de Checagem do Ciclo Celular/efeitos dos fármacos , Fitoterapia , Pisum sativum/química , Lectinas de Plantas/uso terapêutico , Animais , Antineoplásicos Fitogênicos/farmacologia , Carcinoma de Ehrlich/sangue , Carcinoma de Ehrlich/metabolismo , Inibidores de Caspase/farmacologia , Contagem de Eritrócitos , Expressão Gênica/efeitos dos fármacos , Hemoglobinas/metabolismo , Contagem de Leucócitos , Camundongos , Extratos Vegetais/farmacologia , Extratos Vegetais/uso terapêutico , Lectinas de Plantas/farmacologia , Proteínas Proto-Oncogênicas c-bcl-2/metabolismo , Proteína X Associada a bcl-2/metabolismo
4.
Asian Pac J Trop Med ; 4(10): 786-90, 2011 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22014733

RESUMO

OBJECTIVE: To investigate experimentally the possible antitumor effect of methanol extract (ME) of Calotropis gigantea L. (C. gigantean) root bark and its petroleum ether (PEF) and chloroform (CF) soluble fractions against Ehrlich ascites carcinoma (EAC) in Swiss albino mice. METHODS: The effects of ME (10 and 20 mg/kg), PEF (40 and 80 mg/kg) and CF (20 and 40 mg/kg) on the growth of EAC and life span of EAC bearing mice were studied. Hematological profile and biochemical parameters (SALP, SGPT and SGOT) were also estimated. RESULTS: Results of in vivo study showed a significant decrease in viable tumor cell count and a significant increase of life span in the ME and CF treated group compared to untreated one. The life span of ME and CF treated animals was significantly (P<0.05) increased by 43.90% (20 mg ME/kg) and 57.07% (40 mg CF/kg). ME and CF brought back the hematological parameter more or less normal level. ME and CF also restored the altered levels of serum alkaline phosphatase (SALP) and serum glutamate oxaloacetate transaminase (SGOT). CONCLUSIONS: Methanol extract (ME) of C. gigantea root bark and its chloroform soluble fraction (CF) possesses significant antitumor activity.


Assuntos
Calotropis/química , Carcinoma de Ehrlich/tratamento farmacológico , Fitoterapia , Extratos Vegetais/farmacologia , Raízes de Plantas/química , Alcanos/administração & dosagem , Alcanos/farmacologia , Animais , Biomarcadores Tumorais/sangue , Carcinoma de Ehrlich/sangue , Clorofórmio/administração & dosagem , Clorofórmio/farmacologia , Camundongos , Extratos Vegetais/administração & dosagem
5.
Eur J Pharmacol ; 652(1-3): 7-14, 2011 Feb 10.
Artigo em Inglês | MEDLINE | ID: mdl-21114990

RESUMO

The phytochemicals, resveratrol or curcumin, have been shown to possess many pharmacological activities including anti-inflammatory, anti-oxidant, anti-microbial and anti-cancer effects. However, the underlying mechanism for their anti-tumor activity is yet to be evaluated. The present study was carried out to investigate the anti-angiogenic effect of resveratrol or curcumin when used alone or in combination with carboplatin in Ehrlich ascites carcinoma (EAC)-bearing mice. Solid tumors were induced by intradermal injection of EAC cells. These tumors were used for the evaluation of microvessel density, plasma vascular endothelial growth factor (VEGF) and its intra-tumoral receptor type-2 (Flk-1). All parameters were determined as a time course on days 7, 14, and 21 post-inoculation. Individual treatments with resveratrol or curcumin and their combination with carboplatin produced a significant reduction in microvessel density. Plasma levels of VEGF were significantly reduced in groups treated with resveratrol or curcumin and their combination with carboplatin on day 7 post-inoculation. Treatment with resveratrol or curcumin reduced the percentage of Flk-1-rich tumors to reach 42.9% and 28.6%, respectively. Their co-administration with carboplatin has produced a further reduction in the percentage of Flk-1-rich tumors to reach 28.6% and 14.3%, respectively. Correlation studies showed strong association between plasma VEGF and microvessel density. In conclusion, resveratrol or curcumin inhibited angiogenesis as demonstrated by the reduction of microvessel density by these agents. Both proved to exert their anti-angiogenic effect by inhibition of VEGF and its receptor type-2. The results suggest the beneficial role of these phytochemicals as adjuvant to chemotherapy in the treatment of cancer.


Assuntos
Inibidores da Angiogênese/uso terapêutico , Antineoplásicos/uso terapêutico , Carcinoma de Ehrlich/tratamento farmacológico , Curcumina/uso terapêutico , Neoplasias Experimentais/tratamento farmacológico , Estilbenos/uso terapêutico , Inibidores da Angiogênese/farmacologia , Animais , Antineoplásicos/farmacologia , Carcinoma de Ehrlich/sangue , Carcinoma de Ehrlich/metabolismo , Carcinoma de Ehrlich/patologia , Curcumina/farmacologia , Camundongos , Neovascularização Patológica , Resveratrol , Estilbenos/farmacologia , Fatores de Tempo , Células Tumorais Cultivadas , Fator A de Crescimento do Endotélio Vascular/antagonistas & inibidores , Fator A de Crescimento do Endotélio Vascular/sangue , Fator A de Crescimento do Endotélio Vascular/metabolismo , Receptor 2 de Fatores de Crescimento do Endotélio Vascular/antagonistas & inibidores , Receptor 2 de Fatores de Crescimento do Endotélio Vascular/sangue , Receptor 2 de Fatores de Crescimento do Endotélio Vascular/metabolismo
6.
J Ethnopharmacol ; 129(1): 131-4, 2010 May 04.
Artigo em Inglês | MEDLINE | ID: mdl-20307641

RESUMO

ETHNOPHARMACOLOGICAL RELEVANCE: The plant Cleome gynandra L. (Capparidaceae), is commonly known as 'Hurhur'and 'Karaila' in India and 'Cat's whiskers' in English. Traditionally the whole plant is used in the treatment of tumor, anti-inflammatory and lysosomal stability actions. AIM OF STUDY: The objective of present study is to explore the anticancer activity of the methanol extract of the Cleome gynandra in Swiss albino mice against Ehrlich Ascites Carcinoma (EAC) cell line. MATERIALS AND METHODS: Anticancer activity of methanol extract of Cleome gynandra (MECG) was evaluated in Swiss albino mice against Ehrlich Ascites Carcinoma (EAC) cell line at the doses of 200 and 400mg/kg body weight intraperitoneally. MECG was administered for nine consecutive days. Twenty-four hours of last dose and 18 h of fasting, the mice were sacrificed and antitumor effect of MECG assessed by evaluating tumor volume, viable and nonviable tumor cell count, tumor weight and hematological parameters of EAC bearing host. RESULTS: MECG showed significant decrease in (p<0.01) tumor volume, viable cell count, tumor weight and elevated the life span of EAC tumor bearing mice. Hematological profile such as RBC, hemoglobin, WBC and lymphocyte count reverted to normal level in MECG treated mice. CONCLUSION: From the result it was showed that the extract has potent dose dependent anticancer activity and that is comparable to that of 5-fluorouracil.


Assuntos
Antineoplásicos Fitogênicos/uso terapêutico , Carcinoma de Ehrlich/tratamento farmacológico , Proliferação de Células/efeitos dos fármacos , Cleome , Fitoterapia , Extratos Vegetais/uso terapêutico , Animais , Antineoplásicos Fitogênicos/farmacologia , Contagem de Células Sanguíneas , Carcinoma de Ehrlich/sangue , Carcinoma de Ehrlich/patologia , Testes Hematológicos , Hemoglobinas/metabolismo , Injeções Intraperitoneais , Masculino , Camundongos , Extratos Vegetais/farmacologia
7.
J Ethnopharmacol ; 117(2): 228-35, 2008 May 08.
Artigo em Inglês | MEDLINE | ID: mdl-18343063

RESUMO

The effects of Tabebuia avellanedae (TACE), traditionally prescribed in the treatment of cancer, and the naphtoquinone beta-lapachone (beta-lap) on the growth and differentiation of granulocyte and macrophage progenitor cells (CFU-GM) were studied in Ehrlich ascites tumour-bearing mice. Myelosuppression concomitant with increases in spleen CFU-GM and in serum colony-stimulating activity (CSA) were observed in these animals. Treatment with TACE (30-500 mg/kg) and beta-lap (1-5mg/kg) reversed these effects in a dose-dependent manner. The optimal biologically active doses of 120 mg/kg TACE and 1mg/kg beta-lap prolonged life span of tumour-bearing mice, both producing the same rate of extension in the duration of survival. Toxic manifestations were produced by the higher doses of beta-lap in normal and tumour-bearing mice. In spite of similarities between treatments, TACE concentrations used to treat the animals presented no traces of beta-lap, as measured by TLC and HPLC analyses. Our findings suggest that the antitumour effect of TACE and beta-lap, acting synergistically with other factors, such as specific cytokines, may result from enhanced macrophage activation against tumour cells. In addition, it is clear from our results that hematopoietic disorders produced by tumours are an important pathological condition that must be considered in drug development.


Assuntos
Antineoplásicos Fitogênicos/farmacologia , Hematopoese/efeitos dos fármacos , Naftoquinonas/farmacologia , Neoplasias Experimentais/sangue , Tabebuia/química , Animais , Células da Medula Óssea/efeitos dos fármacos , Carcinoma de Ehrlich/sangue , Cromatografia Líquida de Alta Pressão , Cromatografia em Camada Fina , Fatores Estimuladores de Colônias/sangue , Fator Estimulador de Colônias de Granulócitos e Macrófagos/farmacologia , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Mielopoese/efeitos dos fármacos , Casca de Planta/química , Extratos Vegetais/farmacologia , Baço/citologia , Baço/metabolismo , Células-Tronco/efeitos dos fármacos , Análise de Sobrevida
8.
Phytother Res ; 21(11): 1070-5, 2007 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-17685385

RESUMO

In this study, the prophylactic effect of the main lectin present in Aloe vera leaf pulp extract (Aloctin I) was assayed against Ehrlich ascites tumours in mice. The lectin administered prophylactically before tumour implantation regressed tumour size, however, this activity was less potent than that of the A. vera leaf pulp extract previously shown in our laboratory. Accordingly, serum sialic acid and tumour necrosis factor alpha (TNFalpha) levels, chosen as tumour markers, were decreased significantly by the prophylactic administration of the lectin. The increase in spleen and thymus weights in the group given only Aloctin I, could be explained by the immunomodulatory and mitogenic effects of lectins. These findings, along with lymphoid hyperplasia observed in spleen and thymus, suggest that the tumour preventive effect of Aloctin I could be due to its immunomodulatory activity.


Assuntos
Aloe/química , Carcinoma de Ehrlich/prevenção & controle , Folhas de Planta/química , Lectinas de Plantas/uso terapêutico , Animais , Carcinoma de Ehrlich/sangue , Carcinoma de Ehrlich/patologia , Contagem de Leucócitos , Masculino , Camundongos , Ácido N-Acetilneuramínico/sangue , Tamanho do Órgão/efeitos dos fármacos , Lectinas de Plantas/isolamento & purificação , Lectinas de Plantas/farmacologia , Baço/efeitos dos fármacos , Baço/patologia , Timo/efeitos dos fármacos , Timo/patologia , Fator de Necrose Tumoral alfa/sangue
9.
J Tradit Chin Med ; 24(1): 56-8, 2004 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-15119180

RESUMO

The study was to investigate the effect of moxibustion on the serum IL-2, IL-12 levels and NK cell and ascitic tumor cell activities in H-22 mice with tumor and its mechanisms. The method used in the study was that the IL-2 and IL-12 levels were determined by the double antibody method with ELISA, and the NK cell activities by the MTT measure. The results showed that moxibustion elevated the serum IL-2 and IL-12 levels and the NK cell activities of the mice with tumor, and the elevations were of significance as compared with the controls (P < 0.05). It is concluded that moxibustion can inhibit the growth of tumor, which is related to the increase of the serum IL-2 and IL-12 levels and the strengthening of NK cell activities.


Assuntos
Carcinoma de Ehrlich/imunologia , Interleucina-12/sangue , Células Matadoras Naturais/imunologia , Moxibustão , Pontos de Acupuntura , Animais , Carcinoma de Ehrlich/sangue , Interleucina-2/sangue , Camundongos , Transplante de Neoplasias
10.
Br Homeopath J ; 90(4): 198-203, 2001 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-11680804

RESUMO

We evaluated the interaction of dexamethasone 10(-17) and 10(-33) M (equivalent to 7cH and 15cH) with dexamethasone in pharmacological concentrations, using as experimental models: acute inflammation induced by carrageenan, Ehrlich ascitic tumour, and migration of tumour infiltrating leukocytes (TIL). Male adult BALB/c mice (n=7 per group) were used in all experiments. Carrageenan (1%) was injected into the footpad for oedema evaluation and into the peritoneal cavity (i.p.), for differential counting of inflammatory cells. Ehrlich ascitic tumour cells (10(7) viable cells/ml) were injected i.p. and tumour cells were counted after 6 days, by the Trypan blue exclusion method. The differential TIL was counted using smears stained by hematoxylin-eosin. Treatments were made immediately after carrageenan inoculation or once a day, during Ehrlich tumour development, until the animals were killed. Animals were treated with the following preparations: (1) phosphate buffer saline (PBS) solution; (2) dexamethasone (0.5 mg/kg for inflammation model or 4mg/kg for tumour model) mixed with dexamethasone 7cH or 15cH; (3) dexamethasone (same doses) mixed in PBS. Homeopathic dexamethasone partially blocked the anti-inflammatory effect of pharmacological dexamethasone with regard to paw oedema (two-way ANOVA, P < 0.0008) and polymorphonuclear cell migration (chi2, P=0.0001). No important differences were observed between experimental and control groups, in relation to Ehrlich tumour cells viability or count, or bodyweight, but potentised dexamethasone restored control levels of TIL viability, compared to mice treated with pharmacological doses of dexamethasone (chi2, P< or = 0.001). The results demonstrate that a potentised substance may change its own pharmacological effects and suggest that ultradilutions effects act mostly on host response.


Assuntos
Anti-Inflamatórios/administração & dosagem , Anti-Inflamatórios/farmacologia , Antineoplásicos Hormonais/administração & dosagem , Antineoplásicos Hormonais/farmacologia , Carcinoma de Ehrlich/tratamento farmacológico , Dexametasona/administração & dosagem , Dexametasona/farmacologia , Inflamação/tratamento farmacológico , Materia Medica/administração & dosagem , Materia Medica/farmacologia , Doença Aguda , Análise de Variância , Animais , Carcinoma de Ehrlich/sangue , Carragenina , Inflamação/sangue , Contagem de Leucócitos , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Cavidade Peritoneal , Fosfatos/administração & dosagem , Fosfatos/farmacologia , Distribuição Aleatória , Células Tumorais Cultivadas
11.
Bioelectromagnetics ; 22(5): 316-22, 2001 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-11424154

RESUMO

Electrochemical treatment of cancer utilizes direct electric current (DEC) to produce direct alterations and chemical changes in tumors. However, the DEC treatment is not established and mechanisms are not well understood. In vivo studies were conducted to evaluate the effectiveness of DEC on animal tumor models. Ehrlich tumors were implanted subcutaneously in sixty male BALB/c mice. When the tumor volumes reached 850 mm(3), four platinum electrodes were inserted into the tumors. DEC of 4 mA was applied for 21 min to the treated group; the total charge was 5 C. The healthy and sick control groups were subjected to the same conditions but without DEC. Hematological and chemical parameters as well as histopathological and peritumoral findings were studied. After the electrochemical therapy it was observed that both tumor volume decrease and necrosis percentage increase were significant in the treated group. Moreover, 24 h after treatment an acute inflammatory response, as well as sodium ion decrease, and potassium ion and spleen weight increase were observed in this group. It was concluded that both electrochemical reactions (fundamentally those in which reactive oxygen species are involved), and immune system stimulation induced by cytotoxic action of the DEC could constitute the most important antitumor mechanisms.


Assuntos
Carcinoma de Ehrlich/terapia , Terapia por Estimulação Elétrica , Eletroquímica , Animais , Carcinoma de Ehrlich/sangue , Carcinoma de Ehrlich/metabolismo , Carcinoma de Ehrlich/patologia , Concentração de Íons de Hidrogênio , Inflamação/patologia , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Superóxidos/metabolismo
12.
Med Radiol (Mosk) ; 34(2): 67-72, 1989 Feb.
Artigo em Russo | MEDLINE | ID: mdl-2918833

RESUMO

Therapeutic potentialities of various types of polyradiomodification were compared in experiments on mice with solid Ehrlich carcinoma by using separate and combined use of short-term hyperglycemia (SH) and local hyperthermia (HT). In the combination of modifiers SH was always created 3 h after the beginning of glucose administration. Irradiation of tumors was performed in either of 5 moments: 4 h or immediately before SH, in-between SH and HT, 30 min. or 2.5 h after SH. Two control schemes, in which irradiation was combined with one of the modifiers only, corresponded to each polyradiomodification regimen. The combined use of SH and HT produced a more noticeable effect than their separate action. A maximum effect on a tumor was observed in the combined use of both modalities shortly after irradiation, and it was not accompanied by enhanced skin radiation injury in a tumor growth zone. Irradiation after or in-between SH and TH resulted in enhanced skin radiation reactions. Thus, the highest therapeutic effect was noted in those schemes of polyradiomodification in which SH and HT followed radiation treatment. SH and HT induced suppression of the blood supply in tumors played an important role in the optimization of the combined use of SH and HT with irradiation.


Assuntos
Carcinoma de Ehrlich/radioterapia , Glucose/administração & dosagem , Hipertermia Induzida/métodos , Animais , Glicemia/análise , Carcinoma de Ehrlich/sangue , Terapia Combinada/métodos , Estudos de Avaliação como Assunto , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Endogâmicos CBA , Transplante de Neoplasias , Radioterapia , Fatores de Tempo
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