Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 42
Filtrar
1.
Nutr Cancer ; 74(10): 3601-3610, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35792709

RESUMO

Cancer patients often face malnutrition, which negatively affects their response to cancer treatment. This study aims to analyze the effects of the COVID-19 pandemic on nutritional status and anxiety in cancer patients with different types and stages of cancer. This is a cross-sectional cohort study that includes 1,252 patients with varying cancer types from 17 radiation oncology centers. The nutritional risk scores (NRS-2002) and coronavirus anxiety scale (CAS) scores of all patients were measured. NRS-2002 ≥ 3 and CAS ≥ 5 were accepted as values at risk. Of all patients, 15.3% had NRS-2002 ≥ 3. Breast cancer was the most prevalent cancer type (24.5%) with the lowest risk of nutrition (4.9%, p < 0.001). Nutritional risk was significantly higher in patients with gastrointestinal cancer, head and neck cancer, and lung cancer (p < 0.005) and in patients with stage IV disease (p < 0.001). High anxiety levels (CAS ≥ 5) were significantly related to voluntary avoidance and clinical postponement of hospital visits due to the pandemic (p < 0.001), while clinical postponement was particularly frequent among patients with NRS-2002 < 3 (p = 0.0021). Fear and anxiety in cancer patients with COVID-19 cause hesitations in visiting hospitals, leading to disrupted primary and nutritional treatments. Thus, nutritional monitoring and treatment monitoring of cancer patients are crucial during and after radiotherapy.


Assuntos
COVID-19 , Neoplasias de Cabeça e Pescoço , Desnutrição , Instituições de Assistência Ambulatorial , Ansiedade/epidemiologia , Ansiedade/etiologia , COVID-19/epidemiologia , Estudos Transversais , Neoplasias de Cabeça e Pescoço/complicações , Humanos , Desnutrição/epidemiologia , Desnutrição/etiologia , Desnutrição/terapia , Avaliação Nutricional , Estado Nutricional , Pandemias
2.
Radiat Res ; 197(3): 280-288, 2022 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-34735567

RESUMO

Several studies have reported differences in radiation toxicity between the sexes, but these differences have not been tested with respect to histopathology and genes. This animal study aimed to show an association between histopathological findings of radiation-induced lung toxicity and the genes ATM, SOD2, TGF-ß1, XRCC1, XRCC3 and HHR2. In all, 120 animals were randomly divided into 2 control groups (male and female) and experimental groups comprising fifteen rats stratified by sex, radiotherapy (0 Gy vs. 10 Gy), and time to sacrifice (6, 12, and 24 weeks postirradiation). Histopathological evaluations for lung injury, namely, intra-alveolar edema, alveolar neutrophils, intra-alveolar erythrocytes, activated macrophages, intra-alveolar fibrosis, hyaline arteriosclerosis, and collapse were performed under a light microscope using a grid system; the evaluations were semi quantitatively scored. Then, the alveolar wall thickness was measured. Real-time quantitative reverse transcription PCR (RT-qPCR) was used to determine gene expression differences in ATM, TGF-ß1, XRCC1, XRCC3, SOD2 and HHR2L among the groups. Histopathological data showed that radiation-induced acute, subacute, and chronic lung toxicity were worse in male rats. The expression levels of the evaluated genes were significantly higher in females than males in the control group, but this difference was lost over time after radiotherapy. Less toxicity in females may be attributable to the fact that the expression of the evaluated genes was higher in normal lung tissue in females than in males and the changes in gene expression patterns in the postradiotherapy period played a protective role in females. Additional data related to pulmonary function, lung weights, imaging, or outcomes are needed to support this data that is based on histopathology alone.


Assuntos
Lesão Pulmonar , Lesões por Radiação , Animais , Feminino , Pulmão/metabolismo , Lesão Pulmonar/genética , Lesão Pulmonar/metabolismo , Masculino , Lesões por Radiação/patologia , Ratos , Fatores Sexuais , Fator de Crescimento Transformador beta1/metabolismo
3.
Mol Biol Rep ; 48(10): 6911-6921, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34498162

RESUMO

BACKGROUND: The aim of this study is to investigate of the relationship between GSTM1 gene variations and serum trace elements, plasma malondialdehyde levels in patient with colorectal cancer. Mateials and Methods. Genotype distributions of GSTM1 gene variations were determined using real-time polymerase chain reaction method. Serum trace element levels were determined using atomic absorption spectrophotometer method and plasma MDA levels were measurement by spectrophotometric method. RESULTS: Serum Cu levels, plasma MDA levels and Cu/Zn ratio were determined significantly higher in the group of CRC patient carrying the GA heterozygous genotype of the GSTM1 (rs 112,778,559) gene variation compared to healthy controls (p < 0.05). Serum Cu, Zn levels, plasma MDA levels and Cu/Zn ratio were determined significantly higher in patients carrying GG homozygous genotype of the GSTM1 (rs 112778559) gene variation compared to healthy controls carrying same genotype (p < 0.05). Serum Cu, Zn levels, plasma MDA levels and Cu/Zn ratio were determined significantly higher in the group of CRC patient carrying the GG homozygous genotype of the GSTM1 (rs 12068997) gene variation compared to healthy controls (p < 0.05). On the other hand, serum Se levels were detected significantly lower in CRC patients carrying GA heterozygous and GG homozygous genotypes for GSTM1 (rs 112,778,559) and (rs 12,068,997) gene variations compared to healthy controls (p < 0.05). CONCLUSION: In our study, the evaluation of serum Cu, Zn and Se trace element levels and plasma MDA levels according to GSTM1 gene variations genotype distributions were enabled to obtain important biomarkers in terms of CRC development and progression.


Assuntos
Neoplasias Colorretais/sangue , Neoplasias Colorretais/genética , Glutationa Transferase/genética , Malondialdeído/sangue , Oligoelementos/sangue , Estudos de Casos e Controles , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
5.
J Cancer Res Ther ; 11(2): 447-53, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26148616

RESUMO

PURPOSE: The aim of this study was to compare the radioprotective efficacies of L-carnitine (LC) and amifostine against radiation-induced acute ovarian damage. MATERIALS AND METHODS: Forty-five, 3-month-old Wistar albino rats were randomly assigned to six groups. Control (CONT, n = 7); irradiation alone RT: radiation therapy (RT, n = 8); amifostine plus irradiation (AMI + RT, n = 8); LC plus irradiation (LC + RT, n = 8); LC and sham irradiation (LC, n = 7); and amifostine and sham irradiation (AMI, n = 7). The rats in the AMI + RT, LC + RT and RT groups were irradiated with a single dose of 20 Gy to the whole abdomen. LC (300 mg/kg) and amifostine (200 mg/kg) was given intraperitoneally 30 min before irradiation. Five days after irradiation, both antral follicles and corpus luteum in the right ovaries were counted, and tissue levels of malondialdehyde (MDA) and advanced oxidation protein product (AOPP) were measured. RESULTS: Irradiation significantly decreased antral follicles and corpus luteum (P: 0.005 and P < 0.0001). LC increased the median number of antral follicles and corpus luteum (P: 0.009 and P < 0.0001, respectively). Amifostine improved median corpus luteum numbers but not antral follicle (P < 0.000, P > 0.05). The level of MDA and AOPP significantly increased after irradiation (P = 0.001 and P < 0.0001, respectively). MDA and AOPP levels were significantly reduced by LC (P: 0.003, P < 0.0001) and amifostine (P < 0.0001, P: 0.018). When comparing CONT group with AMI + RT and LC + RT groups, MDA and AOPP levels were similar (P > 0.005). The levels of both MDA and AOPP were also similar when LC + RT is compared with AMI + RT group (P > 0.005). CONCLUSIONS: L-carnitine and amifostine have a noteworthy and similar radioprotective effect against radiation-induced acute ovarian toxicity.


Assuntos
Amifostina/farmacologia , Carnitina/farmacologia , Doenças Ovarianas/tratamento farmacológico , Lesões Experimentais por Radiação/tratamento farmacológico , Protetores contra Radiação/farmacologia , Animais , Feminino , Malondialdeído/metabolismo , Doenças Ovarianas/metabolismo , Oxirredução , Ratos , Ratos Wistar
6.
Indian J Biochem Biophys ; 50(3): 233-6, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23898488

RESUMO

The roles of many genes in the pathophysiology of lung cancer have been investigated in different studies. Cyclin D1 (CCND1) gene plays a significant role in the transition from G1 to S phase of the cell cycle and in the phosphorylation of retinoblastoma tumor suppressor protein. In this study, we aimed to identify the relationship between CCND1 A870G gene polymorphism with lung cancer. CCND1 A870G genotypes were determined in 75 patients with lung cancer and in 65 control subjects. DNA was isolated from blood samples and then CCND1 A870G gene polymorphism was identified using PCR and RFLP assay. The distribution of CCND1 A870G polymorphism did not show any significant differences in all lung cancer patients and controls. There was no correlation between CCND1 A870G polymorphism and histopathological findings. However, the AA + AG genotype was significantly higher in metastatic patients, when compared with non-metastatic patients. Thus, the results show that CCND1 gene polymorphism may be a predictor for detecting patients with poor survival who having metastatic disease.


Assuntos
Ciclina D1/genética , Predisposição Genética para Doença/epidemiologia , Predisposição Genética para Doença/genética , Neoplasias Pulmonares/epidemiologia , Neoplasias Pulmonares/genética , Polimorfismo de Nucleotídeo Único/genética , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prevalência , Fatores de Risco , Turquia/epidemiologia
7.
Med Oncol ; 30(1): 357, 2013 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-23275116

RESUMO

Analyses of gene expression status and genetic polymorphisms are methods to identify novel histopathological prognostic factors. In patients with gastric cancer, some cell cycle regulators p53, p21, p27 and Her-2 oncogene have been proposed as prognostic factors. We aimed to investigate the expression and mutation/polymorphism of p21 and Her-2 and also relationship between that genes status and histopathological factors and prognosis in patients with gastric cancer. Forty-four patients with locally advanced gastric cancer were analyzed in this study from January 2000 to December 2008. Clinicopathological parameters, expression and mutation/polymorphism of p21 and Her-2 results were used to predict disease-free survival and overall survival. The positive expression of p21 and Her-2 was observed in 61.4 % (n = 27) and 9.1 % (n = 4) of all 44 tumors, respectively. p21 gene mutation and Her-2 gene polymorphism were detected in 20 % (n = 11) and 2.3 % (n = 1, II phenotype) of cases, respectively. The negative expression of p21 was correlated significantly with diffuse and undifferential type histologies, whole gastric involvement and positive vascular/neural invasion. The median survival rate of patients with negative expression was significantly poorer than that of patients with positive expression of p21 (17 vs. 27 months, p = 0.01, cox regression). p21 mutation was significantly higher in patients with diffuse (p = 0.03) and undifferential (p = 0.02) type histologies. There was no statistically significant association between histopathological parameters and Her-2 gene polymorphism/expression. The negative expression of p21 correlates with disease survival and may be a poor prognostic factor in patients with resected gastric cancer treated with adjuvant chemotherapy.


Assuntos
Adenocarcinoma/genética , Biomarcadores Tumorais/genética , Inibidor de Quinase Dependente de Ciclina p21/genética , Genes erbB-2/genética , Neoplasias Gástricas/genética , Adenocarcinoma/mortalidade , Adenocarcinoma/patologia , Inibidor de Quinase Dependente de Ciclina p21/metabolismo , Intervalo Livre de Doença , Feminino , Genótipo , Humanos , Imuno-Histoquímica , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Mutação , Reação em Cadeia da Polimerase , Polimorfismo de Fragmento de Restrição , Polimorfismo de Nucleotídeo Único , Polimorfismo Conformacional de Fita Simples , Prognóstico , Modelos de Riscos Proporcionais , Neoplasias Gástricas/mortalidade , Neoplasias Gástricas/patologia
8.
Med Oncol ; 29(2): 768-75, 2012 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-21347716

RESUMO

In the current study, amifostine is evaluated for its radioprotective role in serum and kidney tissue by oxidative (malondialdehyde-MDA, advanced oxidation protein product-AOPP) and antioxidative markers (catalase, glutathione-GSH, free-thiols-F-SH). Thirty Wistar albino 3-4 months old, female rats, were randomly divided into Group I (n = 10): Control, Group II (n = 10): Irradiation-alone, Group III (n = 10): Amifostine before irradiation. In Group II and III, right kidneys of the rats were irradiated with a single dose of 6 Gy using a 60Co treatment unit. Rats in Group III received 200 mg/kg amifostine intraperitoneally, 30 min prior to irradiation. Following sacrification at 24th week, blood and kidney tissue samples were collected. Statistical analysis was done by One-way ANOVA, Post hoc Bonferroni, Dunnett T3, and Mann-Whitney U tests. Administration of amifostine significantly decreased the serum AOPP and MDA levels when compared to the irradiation-only group (P = 0.004, P = 0.006; respectively). Also amifostine significantly increased serum catalase activities and GSH levels, when given 30 min prior to irradiation (P = 00.02, P = 0.000; respectively). In the kidney tissue, administration of amifostine significantly decreased AOPP and MDA levels (P = 0.002, P = 0.016; respectively). Tissue GSH activity was increased following amifostine administration (P = 0.001). There was no statistically significant result on histopathological evaluation. Amifostine may reduce radiation-induced nephropathy by inhibiting chronic oxidative stress. Biomarkers of oxidative stress in serum and kidney tissue may be used for evaluation of the radiation-induced nephropathy.


Assuntos
Amifostina/uso terapêutico , Radioisótopos de Cobalto/efeitos adversos , Nefropatias/etiologia , Nefropatias/prevenção & controle , Estresse Oxidativo/efeitos dos fármacos , Tolerância a Radiação/efeitos dos fármacos , Protetores contra Radiação/uso terapêutico , Animais , Antioxidantes/metabolismo , Catalase/metabolismo , Doença Crônica , Feminino , Glutationa/metabolismo , Malondialdeído/metabolismo , Oxirredução , Ratos , Ratos Wistar
9.
Toxicol Ind Health ; 28(9): 852-63, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22075690

RESUMO

The aim of this study was to evaluate the antiapoptotic and proliferative activity of curcumin (Cur) on the ovarian follicles in mice exposed to whole body ionizing radiation (Rd). The mice were exposed to 8.3 gray whole body Rd, and Cur groups were given as a daily dose of 100 mg/kg of Cur for 10 days (10 days before Rd). The ovaries were collected 3 and 12 h after irradiation. To date, no such studies have been performed on antiapoptotic and proliferative activity of Cur on the ovarian follicles in mice exposed to whole body Rd. Analysis of mice ovary after exposure to Rd by terminal-deoxynucleotidyl-transferase-mediated dUTP nick end labeling showed that there were apoptotic cells both in the follicular wall and the antrum, and that the number of follicles showing early atresic features was high 3 h after Rd. On the other hand, analysis of mice ovary 12 h after exposure to Rd showed that the number of follicles containing apoptotic cells with advanced atresic features was significantly higher when compared to the 3-h Rd exposure group. The proliferating cell nuclear antigen -positive granulosa cells were decreased in association with follicular atresia. The groups given treatment were observed to have some benefit from Cur against the damage caused by Rd. The results of this study demonstrate that Cur prevents follicular atresia in Rd-induced apoptosis in ovarian follicles.


Assuntos
Apoptose/efeitos dos fármacos , Proliferação de Células/efeitos da radiação , Curcumina/farmacologia , Folículo Ovariano/efeitos dos fármacos , Folículo Ovariano/efeitos da radiação , Animais , Feminino , Atresia Folicular/efeitos da radiação , Células da Granulosa/efeitos dos fármacos , Células da Granulosa/efeitos da radiação , Marcação In Situ das Extremidades Cortadas , Camundongos , Antígeno Nuclear de Célula em Proliferação/metabolismo , Irradiação Corporal Total/veterinária
10.
Tumori ; 97(4): 459-65, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21989434

RESUMO

AIMS AND BACKGROUND: In late 2001 at our institution, we started offering induction radiochemotherapy as a treatment option for superior sulcus tumors. Our aim was to evaluate treatment choices and outcome in this patient group treated over the past 7 years at our institution. METHODS: The records of 34 patients were retrospectively reviewed and 33 were assessable for the analysis. RESULTS: Twenty of 28 patients with M0 disease had operable disease. The induction radiochemotherapy for superior sulcus tumors was possible in about two-thirds (14/20) of the cases with operable disease, with only one-third (5/14) of these having undergone surgery. The most common reason for not proceeding to surgery following induction radiochemotherapy was patient refusal (n = 5). The median follow-up of all 33 patients was 17 months. In curatively treated patients with (n = 11) or without surgery (n = 15), the median overall survival time was 26 months (range, 10-26) and 26 months (range, 7-71), respectively ( P = 0.534). Local-regional and/or distant failure developed in 20 of 26 patients treated curatively. In patients treated with the trimodality regimen (n = 5), no local-regional failure was observed, and distant failure occurred in one case. CONCLUSIONS: The trimodality treatment was possible in 25% of cases with operable disease due to the high rate of patient refusal to proceed to surgery following induction radiochemotherapy. No difference in survival was observed between patients treated with surgery and those treated with radiochemotherapy only because of a limited follow-up. So, the benefit of additional surgery is not clear, and a longer follow-up is needed before final conclusions can be drawn.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Carcinoma Pulmonar de Células não Pequenas/terapia , Neoplasias Pulmonares/terapia , Pneumonectomia , Adulto , Idoso , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/patologia , Carcinoma Pulmonar de Células não Pequenas/radioterapia , Carcinoma Pulmonar de Células não Pequenas/cirurgia , Quimiorradioterapia Adjuvante , Cisplatino/administração & dosagem , Docetaxel , Etoposídeo/administração & dosagem , Feminino , Humanos , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/patologia , Neoplasias Pulmonares/radioterapia , Neoplasias Pulmonares/cirurgia , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Pneumonectomia/métodos , Dosagem Radioterapêutica , Indução de Remissão , Estudos Retrospectivos , Análise de Sobrevida , Taxoides/administração & dosagem , Resultado do Tratamento
11.
J Cancer Res Ther ; 7(2): 152-6, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21768702

RESUMO

BACKGROUND: To explore the protective effect of a flavonoid fractions diosmin + hesperidin (Daflon), against radiation-induced acute proctitis in an experimental rat model. MATERIALS AND METHODS: Thirty four rats were divided into four groups. The rats in Group 1 received Daflon and underwent irradiation. The rats in Group 2 received no Daflon and underwent irradiation. The rats in Group 3 received Daflon and underwent sham irradiation. The rats in Group 4 received no Daflon and underwent sham irradiation. Daflon emulsion (100 mg/kg/day) was administered via an orogastric feeding tube to the rats in groups 1 and 3 starting from 1 day prior to irradiation until the euthanasia day (day 15 following irradiation). Radiation therapy was delivered on a cobalt-60 unit using a single fraction of 17.5 Gy defined at a depth of 1 cm through an anterior portal. Slides were examined by the same pathologist under a light microscope two times in a blinded manner. RESULTS: When compared to group 2, the rats of Group 1 showed less glandular distortion and less mucosal inflammation with less infiltration of the crypt epithelia by the inflammatory cells (P < 0.001). A statistically significant increase in all parameters but muscular wall thickness was observed for the rats in Group 2 as compared to the group 3 and 4. CONCLUSIONS: Administration of a dose of 100 mg/kg/day of the diosmin + hesperidin resulted in decreased morphologic inflammatory changes. This drug may have protective effects against radiation-induced acute proctitis.


Assuntos
Diosmina/farmacologia , Indóis/farmacologia , Proctite/prevenção & controle , Lesões Experimentais por Radiação/prevenção & controle , Protetores contra Radiação/farmacologia , Sulfonamidas/farmacologia , Doença Aguda , Animais , Diosmina/uso terapêutico , Modelos Animais de Doenças , Feminino , Indóis/uso terapêutico , Mucosa Intestinal/efeitos dos fármacos , Mucosa Intestinal/patologia , Mucosa Intestinal/efeitos da radiação , Protetores contra Radiação/uso terapêutico , Ratos , Ratos Sprague-Dawley , Reto/efeitos dos fármacos , Reto/patologia , Reto/efeitos da radiação , Sulfonamidas/uso terapêutico
12.
Radiat Oncol ; 6: 28, 2011 Mar 30.
Artigo em Inglês | MEDLINE | ID: mdl-21450076

RESUMO

BACKGROUND: We aimed to evaluate retrospectively the correlation of loco-regional relapse (LRR) rate, distant metastasis (DM) rate, disease free survival (DFS) and overall survival (OS) in a group of breast cancer (BC) patients who are at intermediate risk for LRR (T1-2 tumor and 1-3 positive axillary nodes) treated with or without postmastectomy radiotherapy (PMRT) following modified radical mastectomy (MRM). METHODS: Ninety patients, with T1-T2 tumor, and 1-3 positive nodes who had undergone MRM received adjuvant systemic therapy with (n = 66) or without (n = 24) PMRT. Patient-related characteristics (age, menopausal status, pathological stage/tumor size, tumor location, histology, estrogen/progesterone receptor status, histological grade, nuclear grade, extracapsular extension, lymphatic, vascular and perineural invasion and ratio of involved nodes/dissected nodes) and treatment-related factors (PMRT, chemotherapy and hormonal therapy) were evaluated in terms of LRR and DM rate. The 5-year Kaplan-Meier DFS and OS rates were analysed. RESULTS: Differences between RT and no-RT groups were statistically significant for all comparisons in favor of RT group except OS: LRR rate (3% vs 17%, p = 0.038), DM rate (12% vs 42%, p = 0.004), 5 year DFS (82.4% vs 52.4%, p = 0.034), 5 year OS (90.2% vs 61.9%, p = 0.087). In multivariate analysis DM and lymphatic invasion were independent poor prognostic factors for OS. CONCLUSION: PMRT for T1-2, N1-3 positive BC patients has to be reconsidered according to the prognostic factors and the decision has to be made individually with the consideration of long-term morbidity and with the patient approval.


Assuntos
Neoplasias da Mama/radioterapia , Neoplasias da Mama/cirurgia , Carcinoma/radioterapia , Carcinoma/cirurgia , Radioterapia Adjuvante/estatística & dados numéricos , Adulto , Idoso , Axila , Neoplasias da Mama/mortalidade , Neoplasias da Mama/patologia , Carcinoma/mortalidade , Carcinoma/patologia , Terapia Combinada , Feminino , Seguimentos , Humanos , Linfonodos/patologia , Metástase Linfática , Mastectomia Radical Modificada , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/mortalidade , Recidiva Local de Neoplasia/radioterapia , Recidiva Local de Neoplasia/cirurgia , Estadiamento de Neoplasias , Estudos Retrospectivos , Análise de Sobrevida , Fatores de Tempo
13.
Med Oncol ; 28 Suppl 1: S690-6, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-21140244

RESUMO

We aimed to compare the protective effect of L-carnitine (CAR) and amifostine (AMF) against cisplatin (CDDP)-induced nephrotoxicity through biochemical markers and histopathological evaluation. Fifty-seven Wistar albino male rats were randomly classified into six groups, which were AMF+CDDP (n = 11; 200 mg/kg AMF 30 min prior to 7 mg/kg CDDP), CAR+CDDP (n = 11; 300 mg/kg CAR 30 min prior to 7 mg/kg CDDP), CDDP (n = 11; 1 mL/kg isotonic saline 30 min prior to 7 mg/kg CDDP), AMF (n = 8; 200 mg/kg AMF alone), CAR (n = 8; 300 mg/kg CAR alone), and control (n = 8; 1 mL/kg isotonic saline alone). All drugs were given intraperitoneally. Five days after medication, animals were killed, and samples of blood and kidney tissues were collected for biochemical and histopathological evaluation. The serum urea level was highest in AMF+CDDP group among CDDP-applied groups without statistical significance (median, range: 88, 56-21 mg/dL; P > 0.05). There was no statistical significance among CDDP-applied groups in terms of creatinine level (P > 0.05). In the AMF+CDDP group, the median glomerular, tubular, and tubulointerstitial inflammatory damage scores were significantly higher than the other CDDP-applied groups (P < 0.001). The difference between CAR+CDDP and CDDP groups was not statistically significant in terms of renal damage scores. AMF+CDDP group had significantly higher median total nephrotoxicity score than all the other groups (P < 0.001). To conclude, AMF or CAR has no protective effect on CDDP-induced nephrotoxicity. Furthermore, our findings suggest that application of AMF before CDDP may enhance CDDP-induced nephrotoxicity histopathologically.


Assuntos
Injúria Renal Aguda/induzido quimicamente , Injúria Renal Aguda/prevenção & controle , Amifostina/administração & dosagem , Carnitina/administração & dosagem , Cisplatino/toxicidade , Injúria Renal Aguda/patologia , Animais , Antineoplásicos/toxicidade , Masculino , Ratos , Ratos Wistar
14.
Asian Pac J Cancer Prev ; 11(3): 661-7, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-21039033

RESUMO

PURPOSE: The aim of the present study was to evaluate the radioprotective efficacy of L-carnitine (LC) in growing bones in comparison to amifostine. MATERIALS AND METHODS: Sixty two-week-old Wistar albino rats were randomly assigned to six equal groups: Group 1, control (CONT); Group 2, irradiation alone (RT); Group 3, amifostine plus irradiation (AMI+ RT); Group 4, L-carnitine plus irradiation (LC+ RT); Group 5, amifostine alone (AMI); Group 6, L-carnitine alone (LC). The rats in the AMI+ RT, LC+ RT and RT groups were irradiated individually with a single dose of 20 Gy to the left femur. LC (300 mg/kg) and amifostine (200 mg/kg) were applied 30 min before irradiation. The animals were scanned for bone area, mineral content and bone mineral density (BMD) by DEXA and the 99mTc methylene diphosphonate uptake ratio (MUR) was calculated by bone scintigraphy. Histopathological analysis of bone and cartilage was also carried out after euthanasia. RESULTS: Pretreatment with LC or amifostine reduced the radiation-induced damage in growing bone (p= 0.007 and p= 0.04 respectively) and in the epiphysial cartilage (p= 0.002 and p= 0.015 respectively). The protective effect of LC was similar to that of amifostine on both growing bone and on the epiphysial cartilage. The mean left-femur BMD values were significantly higher in the LC+RT (p= 0.02) and AMI+RT (p= 0.01) groups than in the RT group. but did not differ with the two protective agents. Pretreatment with AMI (p= 0.002) and LC (p= 0.01) improved the MUR. CONCLUSIONS: L-carnitine is equally as effective as amifostine at protecting growing bone against single dose irradiation damage.


Assuntos
Amifostina/uso terapêutico , Desenvolvimento Ósseo/efeitos dos fármacos , Desenvolvimento Ósseo/efeitos da radiação , Carnitina/uso terapêutico , Lesões Experimentais por Radiação/tratamento farmacológico , Protetores contra Radiação/uso terapêutico , Animais , Citoproteção/efeitos dos fármacos , Citoproteção/efeitos da radiação , Avaliação Pré-Clínica de Medicamentos , Feminino , Raios gama , Lesões Experimentais por Radiação/patologia , Compostos Radiofarmacêuticos , Ratos , Ratos Wistar , Resultado do Tratamento , Complexo Vitamínico B/uso terapêutico
16.
Med Oncol ; 27(1): 45-8, 2010 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-19165637

RESUMO

Solitary fibrous tumor (SFT) of the pleura is an uncommon neoplasm with non-specific symptoms and non-pathognomonical radiological findings. Surgery allows establishment of a definitive diagnosis as well as a cure of the disease. The role of radiotherapy or chemotherapy in the management of the disease is unclear because of the rarity of the disease and the successful results of the surgical treatment. Long-term clinical follow-up may be useful for the patients with SFT because of the potential adverse biological behavior of this tumor, which may lead to repeated recurrences and/or malignant transformation. We reported a 66-year-old woman with recurrence of SFT in the right lung, which had significant response to external thoracic radiotherapy.


Assuntos
Recidiva Local de Neoplasia/radioterapia , Tumor Fibroso Solitário Pleural/radioterapia , Idoso , Dispneia/etiologia , Feminino , Humanos , Imuno-Histoquímica , Recidiva Local de Neoplasia/patologia , Recidiva Local de Neoplasia/fisiopatologia , Cuidados Paliativos , Tumor Fibroso Solitário Pleural/patologia , Tumor Fibroso Solitário Pleural/fisiopatologia , Tomografia Computadorizada por Raios X , Resultado do Tratamento
17.
J Cancer Res Ther ; 6(4): 557-9, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-21358101

RESUMO

Spontaneous intracranial hypotension (SICH) is an entity, which is secondary to iatrogenic manipulation and breaching of dura. Postural headache in patients should be suspected, cranial magnetic resonance imaging (MRI) is essential for precise diagnosis. Hallmark of MRI is regular shape of pachymeningeal gadolinium enhancement and subdural effusion. It may mimic central nervous system (CNS) metastasis. Prevention of such cases from receiving cranial radiotherapy by misinterpretation of the gadolinium enhancement as CNS metastasis is an important issue. Capecitabine is an antineoplastic agent, of which metabolites can cross blood-brain barrier in CNS via epithelial tissue. It may cause decrease in CSF production. SICH might be the clinical reflection of this decrease in CSF production. Review of the English literature revealed limited data because of the very little experience with oncologic patients suffering from intracranial hypotension. We report a case of spontaneous intracranial hypotension during capecitabine treatment. Patient was completely well following drug discontinuation and supportive treatment.


Assuntos
Antineoplásicos/efeitos adversos , Neoplasias da Mama/tratamento farmacológico , Desoxicitidina/análogos & derivados , Fluoruracila/análogos & derivados , Hipotensão Intracraniana/induzido quimicamente , Neoplasias da Mama/patologia , Capecitabina , Desoxicitidina/efeitos adversos , Feminino , Fluoruracila/efeitos adversos , Humanos , Pessoa de Meia-Idade , Metástase Neoplásica
18.
Acta Oncol ; 48(3): 354-60, 2009.
Artigo em Inglês | MEDLINE | ID: mdl-18979286

RESUMO

BACKGROUND: Extrapulmonary small cell carcinomas (EPSCC) can clinically progress differently depending on the primary site of disease involvement. This review is focused on patients with small cell carcinoma (SmCC) exclusively localized in a lymph node or in multiple lymph nodes without any evidence of a primary tumor in any other organ. METHODS: We searched the period 1980 to 2007 in the PubMed database and identified 11 publications in the English language presenting at least one case of SmCC. In total 28 individual patients were included in the present study. They were scrutinized in terms of epidemiology, clinical presentation, staging, pathology, etiology, treatment and prognosis. RESULTS: Characteristics such as age, gender and smoking were similar to those seen in other EPSCCs. Median survival was not reached (42+, range, 9.1 to 100 months). The survival rate was found to be 79% at 3 years. Seventy-seven percent of the patients had limited stage disease. These patients completely responded to surgical therapy, chemotherapy, radiotherapy or to a combination of these treatments. Seventy-one percent of the patients with limited stage SmCC localized in lymph nodes were recurrence-free during the study periods. DISCUSSION: Our review patient group with SmCC localized in lymph nodes exhibited an excellent clinical behavior and survival results when compared to other patients with pulmonary and non-pulmonary SmCCs. SmCCs localized in lymph nodes may be a separate clinical entity.


Assuntos
Carcinoma de Células Pequenas/secundário , Linfonodos/patologia , Carcinoma de Células Pequenas/mortalidade , Carcinoma de Células Pequenas/terapia , Humanos , Metástase Linfática , Taxa de Sobrevida
19.
Strahlenther Onkol ; 184(7): 370-5, 2008 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-19016036

RESUMO

PURPOSE: To assess the degree of protective effects of amifostine on kidney functions via semiquantitative static renal scintigraphy and histopathologic analysis. MATERIAL AND METHODS: 30 female albino rats were divided into three equal groups as control (CL), radiotherapy alone (RT), and radiotherapy + amifostine (RT+AMI). The animals in the CL and RT groups were given phosphate-buffered saline, whereas the animals in the RT+AMI group received amifostine (200 mg/kg) by intraperitoneal injection 30 min before irradiation. RT and RT+AMI groups were irradiated with a single dose of 6 Gy using a (60)Co unit at a source-skin distance of 80 cm to the whole right kidney. They were followed up for 6 months. CL, RT, and RT+AMI groups underwent static kidney scintigraphy at the beginning of the experiment and, again, on the day before sacrificing. Histopathologically, tubular atrophy and fibrosis of the kidney damage were evaluated. RESULTS: After irradiation, the median value of right kidney function was 48% (44-49%) and 50.5% (49%-52%) in RT and RT+AMI groups, respectively (p = 0.0002). Grade 1 kidney fibrosis was observed to be 60% in the RT group, while it was only 30% in the RT+AMI group. Grade 2 kidney fibrosis was 30% and 0% in the RT and RT+AMI group, respectively. Grade 1 tubular atrophy was 70% and 50% in the RT and RT+AMI group, respectively. Grade 2 tubular atrophy effect was the same in both groups (10%). CONCLUSION: Static kidney scintigraphy represents an objective and reproducible method to noninvasively investigate kidney function following irradiation. Amifostine produced a significant reduction in radiation-induced loss of renal function.


Assuntos
Amifostina/farmacologia , Rim/efeitos da radiação , Lesões por Radiação/tratamento farmacológico , Protetores contra Radiação/farmacologia , Cintilografia , Animais , Feminino , Injeções Intraperitoneais , Rim/diagnóstico por imagem , Rim/patologia , Testes de Função Renal , Túbulos Renais/diagnóstico por imagem , Túbulos Renais/patologia , Túbulos Renais/efeitos da radiação , Pré-Medicação , Ratos , Ácido Dimercaptossuccínico Tecnécio Tc 99m
20.
Rev Port Pneumol ; 14(5): 709-13, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18781272

RESUMO

Tumours that metastasise to groin nodes most frequently originate in genital and reproductive organs, skin, rectum or anus, or urinary bladder. However, rare cases of inguinal metastases from tumours above the diaphragm have been reported and only three of them had an inguinal metastasis which was recognised antemortem and reported in detail in the English medical literature. The primary tumours of these cases were malignant mesothelioma, salivary duct and breast carcinoma. In this paper, we report a case of carcinoma of the lung metastatic to an inguinal lymph node as the only evidence of progressive lung cancer.


Assuntos
Carcinoma Pulmonar de Células não Pequenas/secundário , Neoplasias Pulmonares/patologia , Progressão da Doença , Humanos , Canal Inguinal , Metástase Linfática , Masculino , Pessoa de Meia-Idade
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA