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1.
Leukemia ; 32(2): 383-390, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-28761118

RESUMO

The Dutch-Belgian Cooperative Trial Group for Hematology Oncology Group-65/German-speaking Myeloma Multicenter Group-HD4 (HOVON-65/GMMG-HD4) phase III trial compared bortezomib (BTZ) before and after high-dose melphalan and autologous stem cell transplantation (HDM, PAD arm) compared with classical cytotoxic agents prior and thalidomide after HDM (VAD arm) in multiple myeloma (MM) patients aged 18-65 years. Here, the long-term follow-up and data on second primary malignancies (SPM) are presented. After a median follow-up of 96 months, progression-free survival (censored at allogeneic transplantation, PFS) remained significantly prolonged in the PAD versus VAD arm (hazard ratio (HR)=0.76, 95% confidence interval (95% CI) of 0.65-0.89, P=0.001). Overall survival (OS) was similar in the PAD versus VAD arm (HR=0.89, 95% CI: 0.74-1.08, P=0.24). The incidence of SPM were similar between the two arms (7% each, P=0.73). The negative prognostic effects of the cytogenetic aberration deletion 17p13 (clone size ⩾10%) and renal impairment at baseline (serum creatinine >2 mg dl-1) on PFS and OS remained abrogated in the PAD but not VAD arm. OS from first relapse/progression was similar between the study arms (HR=1.02, P=0.85). In conclusion, the survival benefit with BTZ induction/maintenance compared with classical cytotoxic agents and thalidomide maintenance is maintained without an increased risk of SPM.


Assuntos
Bortezomib/administração & dosagem , Mieloma Múltiplo/tratamento farmacológico , Adolescente , Adulto , Idoso , Aberrações Cromossômicas/efeitos dos fármacos , Feminino , Seguimentos , Transplante de Células-Tronco Hematopoéticas/métodos , Humanos , Masculino , Melfalan/uso terapêutico , Pessoa de Meia-Idade , Mieloma Múltiplo/mortalidade , Mieloma Múltiplo/patologia , Prognóstico , Intervalo Livre de Progressão , Talidomida/uso terapêutico , Transplante Autólogo/métodos , Adulto Jovem
2.
Int J Psychoanal ; 96(4): 945-66, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-25885524

RESUMO

Τhis article addresses the problem of amnemonic traces. The author considers various effects that traumatic experiences can have on the psychic apparatus and, more specifically, those that give rise to situations in which nothing is remembered and nothing is repeated by the patient. She presents data from the analyses of two patients and explores whether it might be possible to give a more accurate description of factors and processes that accelerate the fading of traumatic experiences from the memory network. As somatic disturbances, or illnesses, often accompany or follow traumatic upheavals, the author examines some examples of how somatic events can be viewed as linked to traumatic turmoil and understood as channels of expression of what remains silent in the mental realm. Some suggestions concerning prerequisites for analytic work with patients who confront the analyst with ruptures and erasures in mental functioning and with reductions in mental processing are discussed. How the analyst's psychic economy is involved while working with such patients is also considered.


Assuntos
Memória Episódica , Terapia Psicanalítica/métodos , Trauma Psicológico/psicologia , Adulto , Feminino , Humanos
3.
Eur J Drug Metab Pharmacokinet ; 35(1-2): 23-7, 2010 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21495263

RESUMO

Facial injuries are critical conditions, leading to serious complications, such as occult facial infections. Infectious endophthalmitis occurs despite of antibiotics use during implantation of intraocular lenses and is generally resistant to antibiotic therapy. It is a crucial situation in ophthalmology, since it often induces a substantial reduction of visual acuity and in some cases the loss of the eye despite treatment. It is, therefore, important to obtain drug levels able to exert antimicrobial effect in the diseased organ. The distribution of a drug depends on the binding extent to both plasma proteins and tissues and only the free drug is capable to be transported/diffused across membranes from blood vessels into tissues, in order to achieve its effect on the target organ. Hyperlipidaemia and consequent enhanced concentration of free fatty acid can modify binding pharmacokinetics of antibiotics through antagonism for the same binding sites. Cefotaxime, the third generation cephalosporin with easy penetration in a variety of tissues and body fluids and low incidence of adverse effects, can obtain adequate concentration in blood, eye bulb, and in the orbital bones. Its levels are influenced by hyperlipidaemia with clinical impact.


Assuntos
Antibacterianos/farmacocinética , Cefotaxima/farmacocinética , Hiperlipidemias/sangue , Órbita/metabolismo , Distribuição Tecidual/efeitos dos fármacos , Animais , Ácidos Graxos não Esterificados/sangue , Ácidos Graxos não Esterificados/farmacologia , Heparina/farmacologia , Masculino , Nadroparina/farmacologia , Ratos , Ratos Wistar , Natação
4.
Dent Mater ; 25(7): 863-7, 2009 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-19203785

RESUMO

OBJECTIVE: To evaluate the biocompatibility of resin composite specimens with different curing efficiency, subcutaneously implanted in rats with experimentally induced arthritis. METHODS: The amount of remaining CC bonds (%RDB) of hybrid resin composite specimens photopolymerized for 10s and 40s exposure time (n=3) was measured by micro-attenuated total reflectance Fourier transform infrared spectroscopy. Male Wistar rats (n=36) were classified in two groups (n=18) of healthy animals and of animals with experimentally induced arthritis. Resin composite specimens irradiated for 10s and 40s and calcium hydroxide control specimens were implanted subcutaneously in each animals' dorsum. Following 2-, 4- and 9-week periods the animals were sacrificed. The development of arthritis was defined by biochemical analysis and the changes in the relative weight of animals' organs (spleen, thymus, adrenals). Tissue reactions were examined histologically. RESULTS: %RDB per site and exposure time showed statistically significant differences. Lowest %RDB values were recorded on 40s exposed specimens. Biochemical indices and relative organ weights demonstrated statistically significant differences between healthy animals and animals with arthritis. The health status of the animals and the materials used did not influence tissue response. First and second periods of sacrifice showed reduced propensity of connective tissue development in comparison to the third period. The same applied for the second period regarding the presence of giant cells. SIGNIFICANCE: The materials tested and the animals' health status did not result in altered tissue response compared to control group. The period of sacrifice was associated with different tissue responses.


Assuntos
Artrite Experimental/fisiopatologia , Materiais Biocompatíveis/farmacologia , Resinas Compostas/farmacologia , Materiais Dentários/farmacologia , Tela Subcutânea/efeitos dos fármacos , Glândulas Suprarrenais/efeitos dos fármacos , Glândulas Suprarrenais/patologia , Animais , Artrite Experimental/patologia , Materiais Biocompatíveis/química , Hidróxido de Cálcio/química , Hidróxido de Cálcio/farmacologia , Carbono/química , Resinas Compostas/química , Tecido Conjuntivo/efeitos dos fármacos , Tecido Conjuntivo/patologia , Materiais Dentários/química , Células Gigantes/efeitos dos fármacos , Células Gigantes/patologia , Masculino , Teste de Materiais , Tamanho do Órgão , Processos Fotoquímicos , Distribuição Aleatória , Ratos , Ratos Wistar , Espectroscopia de Infravermelho com Transformada de Fourier , Baço/efeitos dos fármacos , Baço/patologia , Tela Subcutânea/patologia , Timo/efeitos dos fármacos , Timo/patologia , Fatores de Tempo
5.
Eur J Drug Metab Pharmacokinet ; 33(3): 173-9, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-19007043

RESUMO

The aim of this study was to determine whether the co-administration of acenocoumarin as anticoagulant and certain quinolones, i.e., cefapirin, pefloxacin and ciprofloxacin increased the levels of the given antibiotics and whether this resulted in a prolongation of prothrombin time. Seventy male albino Wistar rats aged 8-10 weeks and weighed 170 +/- 14 g were used and divided into seven groups (I, II, III, IV, V, VI, VII: n=10). The rats in group I received cefapirin via 1 g/kg/8h im injection. Group II received cefapirin via of 1 g/kg/8h im injection and 0.1 mg/kg/24h p.o. acenocoumarin. Group III received ciprofloxacin 0.18 mg/kg/24h im. Group IV received ciprofloxacin 0.18 mg/kg/24h im and 0.1 mg/kg/24h p.o. acenocoumarin. Group V received 10 mg/kg/24h pefloxacin im. Group VI received 10 mg/kg/24h pefloxacin im and 0.1 mg/kg/24h p.o. acenocoumarin while Group VII received only acenocoumarin 0.1 mg/kg/24h p.o. Drug administration was performed over a total of 5 doses in order to obtain steady state concentrations in the plasma and tissues. The animals were sacrificed by decapitation 2 h after the last antibiotic administration. Prothrombin time and antibiotic concentrations in the serum, femur and mandible were assessed. In the study, all the antibiotics were found to prolong prothrombine time following acenocoumarin administration. In addition, perfloxacin and ciproflaxin concentrations were increased in the serum and mandible after acenocoumarin treatment. Cepafirin levels remained unaffected after the administration of this anticoagulant. In conclusion, anticoagulant and quinolone co-administration led to significant pharmacokinetic interactions. Thus particular attention should be paid in the case of these drugs being used in combination in clinical practice.


Assuntos
Acenocumarol/farmacologia , Antibacterianos , Anticoagulantes/farmacologia , Fêmur/química , Mandíbula/química , Quinolonas , Administração Oral , Animais , Antibacterianos/sangue , Antibacterianos/farmacocinética , Interações Medicamentosas , Injeções Intramusculares , Masculino , Tempo de Protrombina , Quinolonas/sangue , Quinolonas/farmacocinética , Ratos , Ratos Wistar , Distribuição Tecidual
6.
Oncology ; 70(4): 273-9, 2006.
Artigo em Inglês | MEDLINE | ID: mdl-17047398

RESUMO

PURPOSE: It was the aim of this study to evaluate the activity and tolerance of gemcitabine and oxaliplatin in pretreated metastatic breast cancer patients. METHODS: Thirty-one patients who had disease relapse or progression after completion of an anthracycline- and/or taxane-based front-line regimen were treated with gemcitabine 1,500 mg/m(2) on days 1 and 8 as a 30-min intravenous infusion and oxaliplatin 130 mg/m(2) on day 8 as a 4-hour intravenous infusion, in cycles of 21 days. RESULTS: Complete response occurred in 1 patient (3%) and partial response in 4 patients (13%) (overall response rate 16%; 95% confidence interval 3.2-29.1). Nine patients (29%) had stable disease and 17 (55%) progressive disease. Three partial responses (13%) were achieved among 23 patients receiving the regimen as third-line treatment. The median duration of response was 6 months (range 3-44.8), the median time to tumor progression 4.6 months (range 0.8-43.8), and the median survival 14.4 months (range 2.1-44.8). Grade 3 and 4 neutropenia occurred in 14 patients (45%), grade 3 and 4 thrombocytopenia in 6 patients (20%), and grade 2 and 3 asthenia in 4 patients (13%). There was no episode of febrile neutropenia. CONCLUSION: The gemcitabine-oxaliplatin combination is a relatively active and well-tolerated salvage regimen in patients with heavily pretreated metastatic breast cancer.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Neoplasias da Mama/tratamento farmacológico , Terapia de Salvação/efeitos adversos , Idoso , Neoplasias da Mama/mortalidade , Desoxicitidina/administração & dosagem , Desoxicitidina/efeitos adversos , Desoxicitidina/análogos & derivados , Feminino , Humanos , Pessoa de Meia-Idade , Metástase Neoplásica , Compostos Organoplatínicos/administração & dosagem , Compostos Organoplatínicos/efeitos adversos , Oxaliplatina , Análise de Sobrevida , Resultado do Tratamento , Gencitabina
7.
Br J Cancer ; 95(5): 587-92, 2006 Sep 04.
Artigo em Inglês | MEDLINE | ID: mdl-16909140

RESUMO

Our purpose was to determine the response rate and median and overall survival of gemcitabine as monotherapy versus gemcitabine plus irinotecan in advanced or metastatic pancreatic cancer. Patients with histologically or cytologically confirmed adenocarcinoma who were chemotherapy and radiotherapy naive were enrolled. Patients were centrally randomised at a one-to-one ratio to receive either gemcitabine monotherapy (900 mg m(-2) on days 1, 8 and 15 every 4 weeks (arm G), or gemcitabine (days 1 and 8) plus irinotecan (300 mg m(-2) on day 8) (arm IG), repeated every 3 weeks. The total number of cycles administered was 255 in the IG arm and 245 in the G arm; the median number of cycles was 3. In all, 145 patients (71 in arm IG and 74 in arm G) were enrolled; 60 and 70 patients from arms IG and G, respectively, were evaluable. A complete clinical response was achieved in three (4.3%) arm G patients; nine (15%) patients in arm IG and four (5.7%) in arm G achieved a partial response. The overall response rate was: arm IG 15% and arm G 10% (95% CI 5.96-24.04 and 95% CI 2.97-17.03, respectively; P=0.387). The median time to tumour progression was 2.8 months and 2.9 months and median survival time was 6.4 and 6.5 months for the IG and G arms, respectively. One-year survival was 24.3% for the IG arm and 21.8% for the G arm. No statistically significant difference was observed comparing gemcitabine monotherapy versus gemcitabine plus irinotecan in the treatment of advanced pancreatic cancer, with respect to overall and 1-year survival.


Assuntos
Adenocarcinoma/tratamento farmacológico , Antineoplásicos Fitogênicos/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Camptotecina/análogos & derivados , Neoplasias Pancreáticas/tratamento farmacológico , Adenocarcinoma/patologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Antimetabólitos Antineoplásicos/administração & dosagem , Antimetabólitos Antineoplásicos/uso terapêutico , Antineoplásicos Fitogênicos/administração & dosagem , Antígeno CA-19-9/sangue , Camptotecina/administração & dosagem , Camptotecina/uso terapêutico , Desoxicitidina/administração & dosagem , Desoxicitidina/análogos & derivados , Desoxicitidina/uso terapêutico , Esquema de Medicação , Feminino , Humanos , Irinotecano , Masculino , Pessoa de Meia-Idade , Metástase Neoplásica , Estadiamento de Neoplasias , Neoplasias Pancreáticas/patologia , Cooperação do Paciente , Gencitabina
8.
Oncology ; 70(2): 106-14, 2006.
Artigo em Inglês | MEDLINE | ID: mdl-16645323

RESUMO

PURPOSE: To evaluate the efficacy and tolerance of the gemcitabine/oxaliplatin (GEMOX) combination as second-line chemotherapy for patients with advanced colorectal cancer (CRC) pretreated with an irinotecan (CPT-11)/5-fluorouracil (5-FU)/leucovorin (LV) regimen. PATIENTS AND METHODS: Patients with documented disease progression during or after first-line treatment with CPT-11 and 5-FU/LV were enrolled. Gemcitabine (1,000 mg/m(2) days 1 and 8) and oxaliplatin (100 mg/m(2) day 1) were administered every 3 weeks. RESULTS: Partial responses were observed in 6 of the 34 (17.7%) patients enrolled (intention-to-treat analysis; overall response rate: 17.7%; 95% confidence interval 4.8-30.5%). Eight (23.5%) patients experienced disease stabilization and 20 (59%) disease progression (tumor growth control rate = 41.2%). The median duration of response was 5.5 months, and the median time to tumor progression 2.7 months. The median overall survival was 9.1 months (1-year survival rate: 44.0%). Grade 3 neutropenia and thrombocytopenia occurred in 18 and 15% of the patients, respectively. Other severe non-hematologic toxicities were rare. CONCLUSION: The interesting tumor growth control rate and the favorable toxicity profile of the GEMOX regimen in pretreated patients with advanced CRC strongly suggest that this regimen may provide an alternative therapeutic option for this group of patients.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias Colorretais/tratamento farmacológico , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Camptotecina/administração & dosagem , Camptotecina/análogos & derivados , Neoplasias Colorretais/patologia , Desoxicitidina/administração & dosagem , Desoxicitidina/análogos & derivados , Progressão da Doença , Intervalo Livre de Doença , Feminino , Fluoruracila/administração & dosagem , Humanos , Irinotecano , Leucovorina/administração & dosagem , Masculino , Pessoa de Meia-Idade , Compostos Organoplatínicos/administração & dosagem , Análise de Sobrevida , Resultado do Tratamento
9.
Ann Oncol ; 15(8): 1204-9, 2004 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-15277259

RESUMO

BACKGROUND: The purpose of this study was to evaluate the efficacy and tolerance of irinotecan (CPT-11) in combination with oxaliplatin (L-OHP) as first-line treatment in patients with locally advanced or metastatic gastric cancer (AGC). PATIENTS AND METHODS: Thirty-two patients with AGC who had not received previous therapy for metastatic disease were enrolled. The median age was 62.5 years and the World Health Organization performance status was 0-1 in 29 patients; 13 (40.6%) patients had previous surgery and three (9.4%) had adjuvant chemotherapy. L-OHP (85 mg/m2 as a 2-h i.v. infusion) followed by CPT-11 (200 mg/m2 as a 30-min i.v. infusion) was given on day 1, in cycles of 21 days. RESULTS: All patients were evaluable for toxicity and 31 were evaluable for response. Complete response was achieved in one (3.1%) patient and a partial response was achieved in 15 (46.9%) [overall response rate = 50% (95% confidence interval 38.7-72.4%)]. Eight (25%) patients had stable disease, and eight (25%) had progressive disease. The median duration of response was 5 months and the median time to disease progression was 5.5 months. After a median follow-up period of 16 months, the median survival time was 8.5 months. Grade 3-4 neutropenia occurred in six (18.6%) patients, febrile neutropenia in two (6.2%) and grade 3 anaemia in one (3.1%). Grade 3 diarrhoea was observed in two (6.2%) patients, grade 1 neurotoxicity in five (15.6%) and grade 3 asthenia in two (6.2%). There was no treatment-related death. CONCLUSIONS: The combination of CPT-11/L-OHP is an active regimen as front-line treatment in AGC with a favourable toxicity profile and deserves further evaluation in randomised studies.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Camptotecina/análogos & derivados , Neoplasias Gástricas/tratamento farmacológico , Adulto , Idoso , Idoso de 80 Anos ou mais , Camptotecina/administração & dosagem , Feminino , Humanos , Infusões Intravenosas , Irinotecano , Masculino , Pessoa de Meia-Idade , Compostos Organoplatínicos/administração & dosagem , Oxaliplatina , Neoplasias Gástricas/patologia , Análise de Sobrevida , Resultado do Tratamento
10.
Eur J Drug Metab Pharmacokinet ; 29(4): 231-3, 2004.
Artigo em Inglês | MEDLINE | ID: mdl-15726883

RESUMO

Circadian rhythm may induce alterations of the pharmacokinetic properties of several drugs in clinical use. The aim of the study was to investigate whether lighting conditions alter the quinolone (pefloxacin) levels in serum and tissues and to determine any accumulation of the drug in the skin. Thirty male Wistar rats were divided into groups A, B, C, (n=10). The animals of group A were housed under 12h light/12h dark conditions, group B under 24h UV and group C was kept in complete darkness. All animals received 5 doses of 11mg/Kg pefloxacin every 8h for 48h.Pefloxacin levels were determined in serum, skin and femur by the inhibition zone in E.coli. in vitro. Pefloxacin concentrations in serum were increased in 24h darkness living status and decreased in 24h UV conditions as compared to group A animals. Additionally, both skin and femur pefloxacin levels were decreased under dark and UV conditions. In conclusion total light as well as total dark exposure may lead to pefloxacin pharmacokinetic changes which may have implications in the effectiveness of the drug in tissues.


Assuntos
Ritmo Circadiano/fisiologia , Fêmur/metabolismo , Iluminação , Quinolonas/sangue , Quinolonas/metabolismo , Pele/metabolismo , Animais , Masculino , Ratos , Ratos Wistar , Distribuição Tecidual/fisiologia
11.
J BUON ; 9(3): 255-61, 2004.
Artigo em Inglês | MEDLINE | ID: mdl-17415823

RESUMO

PURPOSE: 5- fluorouracil (5-FU)-based chemotherapy with concomitant pelvic radiotherapy represents the gold standard of the adjuvant treatment of high-risk rectal cancer. This study aimed to determine the maximum tolerated dose (MTD) of weekly irinotecan (CPT-11) when combined with fixed 5FU/FA doses and pelvic irradiation. PATIENTS AND METHODS: Twenty- four patients with stage II or III rectal cancer were accrued. All had undergone curative surgery before entering the study. Standard pelvic radiotherapy was delivered (50.4 Gy, 1.8 Gy/ fraction in 5.5 weeks). The 5-FU/FA doses were 350/250 (mg/m(2)) in the first 6 patients and 250/100 in the remaining patients. Weekly doses of CPT-11 started at 30 mg/m(2) with escalation steps of 10 mg/m(2). CPT-11 was escalated when 3 patients had been monitored for 8 weeks, without a dose limiting toxicity (DLT). RESULTS: Twenty-three out of 24 patients completed the chemoradiation course. Only 1 patient discontinued the treatment due to persistent grade 3 diarrhea. Of the 144 planned weekly chemotherapy cycles, only 7 were omitted as a result of persisting grade 2-3 gastrointestinal toxicity in 3 patients and grade 3 neutropenia in 1 patient. Grade 3 gastrointestinal DLTs were observed at doses at the level of 30/250/100 in 1 patient and 70/250/100 in 2 patients. Late DLTs were severe radiation dermatitis and colitis at 40/ 350/250 (1 patient) and 70/250/100 (2 patients), respectively. With a follow-up of 18 months 20 (83.3%) patients remain disease- free. CONCLUSION: The administration of weekly CPT-11/ 5FU/FA with concomitant pelvic radiotherapy is feasible and effective. This treatment schedule is associated with mild myelosuppression and mild to moderate gastrointestinal toxicity. Caution should be paid on late radiotherapy-induced toxicities. The MTD of weekly CPT-11 is 30 mg/m(2) when combined with 5FU/FA doses (mg/m(2)) of 350sol;250 and reaches 60 mgsol;m(2) with lower doses of 5FU/FA (250/100).

12.
J BUON ; 9(4): 383-90, 2004.
Artigo em Inglês | MEDLINE | ID: mdl-17415843

RESUMO

PURPOSE: The aim of this phase I trial was to deter- mine the maximum tolerated dose (MTD) of adjuvant che- motherapy (CT) with oxaliplatin in combination with capecitabine during concomitant pelvic radiotherapy (RT) in patients with rectal cancer. PATIENTS AND METHODS: Eligible patients had pathological stage II (T3-4N0M0) or III (any T N1-2M0) rectal adenocarcinoma, and no prior treatment other than curative resection. Fixed capecitabine dose (825 mg/m(2) bid on days 1-14 and 22-35) was given and external beam RT was delivered to the pelvis (50.4 Gy in 27 fractions in 5.5 weeks, with field reduction after 45 Gy in linear accelerator, 18Mev). Oxaliplatin was tested at 4 dose levels: 100, 110, 120 and 130 mg/m(2). The dose of oxaliplatin was escalated when all 3 entered patients at each level had been monitored for at least 8 weeks after the CT/RT course without dose limiting toxicities (DLTs). In the presence of a DLT at any dose level, a further 3 patients were enrolled. If only 1 of the 6 patients experienced a DLT, escalation could proceed. The MTD was defined as the level at which >/= 2 of 3 to 6 patients experienced DLTs. Fifteen patients (10 males and 5 females, median age 62 years) were enrolled at oxaliplatin dose levels of 100 (n=3), 110 (n=3), 120 (n=3) and 130 mg/m(2) (n=6). RESULTS: All patients completed the planned CT/RT course. Dose reduction or delay of the 2nd CT cycle was not required. No DLTs were observed at all dose levels. Overall, gastrointestinal and neurological toxicities were mild and transient. Toxicities included non-dose-limiting nausea / vomiting, diarrhea, dysesthesias in 2 level III and in 1 level IV patients. Grade II myelotoxicity, mainly neutropenia, was seen in 6 patients. With a median follow-up of 4 months (range 2-12) after the completion of CT/RT, late toxicities were restricted to grade II radiation colitis and dermatitis in 2 and 2 patients, respectively. CONCLUSION: The combination of pelvic RT, capecitabine and 3-weekly oxaliplatin is feasible and well tolerated. The MTD was not reached up to the dose of 130 mg/m(2) of oxaliplatin, which is the recommended dose.

13.
J BUON ; 9(4): 391-8, 2004.
Artigo em Inglês | MEDLINE | ID: mdl-17415844

RESUMO

PURPOSE: Soft tissue sarcomas (STS) have a high incidence of local recurrence. In an effort to improve the local control rate and the survival in patients with STS, treatment strategies employing intraoperative electron beam radiotherapy (IOERT) in combination with external beam radiotherapy (EBRT) and extensive surgical resection have been explored. This study assesses the rate of overall survival (OS), local control and toxicity of this multimodal approach for primary and recurrent STS of the extremities. PATIENTS AND METHODS: From 1999 to 2004, 36 patients were treated at Agios Savvas Cancer Hospital for primary or recurrent extremity STS with IOERT as a component of their treatment. All patients underwent surgical resection, IOERT, and most of them received postoperative EBRT with a median dose of 45 Gy. Chemotherapy was given to patients with high grade tumors. Thirteen patients were treated for primary disease and 23 for isolated local recurrence.The locations of the tumors were as follows: upper limbs n=19, lower limbs n=17. Tumor size was >5 cm in 16 (44%) patients and high-grade histology (II-III) was present in 24 (67%) patients. Six (17%) patients had positive surgical margins. RESULTS: With a median follow up of 24 months (range 6-48) OS was 72% (84.5% for patients with low grade lesions compared to 65% for high grade lesions, p=0.127, and 90% for tumors <5 cm compared to 50% for tumors >5 cm, p=0.0136). Overall local tumor control rate was 89% (92% in primary disease group versus 87% in isolated local recurrence group, p=0.136, and 93% for patients with negative surgical margins versus 67% for those with positive margins, p=0.0013). Distant metastases occurred in 10 patients (1 of 13 (8%) with primary disease, and 9 of 23 (39%) with isolated local recurrence). All distant metastases were to the lungs. Twelve (33%) patients developed moderate neurotoxicity. CONCLUSION: In selected patients, IOERT results in excellent local control and OS with acceptable toxicity.

14.
Horm Metab Res ; 35(3): 164-8, 2003 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-12734777

RESUMO

The aim of this study is to determine the effect of losartan on insulin and angiotensin II (Ang II) concentrations in plasma as well as on lipoprotein lipase activity (LPL) and angiotensin II content in the adipose tissue of hypertensive rats. Fifty male rats were divided in five groups. Group A served as controls. Group B underwent renal artery stenosis. Group C were administered losartan (10 mg/kg/day) per os, while rats in group D were submitted to renal artery stenosis and were treated with losartan as above. Group E was used as sham-operated control. The animals were sacrificed at day 21. Blood samples were collected, and perirenal adipose tissue was isolated. Furthermore, adrenal's were removed and their relative weight (adrenal weight/body weight) was used as an index of sympathetic stimulation. According to our results, renovascular hypertension resulted in lower insulin concentrations and higher Ang II content in plasma. In hypertensive rats, LPL activity was decreased, while the adrenals' relative weight was elevated. On the other hand, losartan administration resulted in normalization of insulin concentrations in plasma and adrenals' relative weight, with consequent up regulation of LPL activity in adipose tissue. In conclusion, renovascular hypertension interferes in lipid metabolism by reducing LPL activity in adipose tissue, while losartan administration reverses this effect by enhancing insulin release and reducing sympathetic nervous system (SNS) stimulation.


Assuntos
Tecido Adiposo/efeitos dos fármacos , Anti-Hipertensivos/farmacologia , Hipertensão Renovascular/metabolismo , Insulina/sangue , Lipase Lipoproteica/metabolismo , Losartan/farmacologia , Tecido Adiposo/enzimologia , Glândulas Suprarrenais/patologia , Angiotensina II/análise , Angiotensina II/sangue , Animais , Constrição , Hipertensão Renovascular/sangue , Hipertensão Renovascular/patologia , Masculino , Tamanho do Órgão , Ratos , Ratos Wistar , Artéria Renal/cirurgia
15.
J Musculoskelet Neuronal Interact ; 3(2): 170-5, 2003 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-15758358

RESUMO

Administration of antibiotics is considered to be an important factor, during or after operational procedures in the maxillofacial area, in order to avoid post-surgical complications. Furthermore, administration of anti-inflammatory drugs is often prescribed for control of the post-operative pain. The aim of this study was to determine the levels of quinolones in serum and tissues (parotid gland, tongue, mandible), during traumatic injury in the oral cavity, with or without co-administration of ibuprofen, a non-steroidal anti-inflammatory drug. Four groups of Wistar rats, (A, B control), (C, D experimental) were used. In the experimental group, traumatic injury was performed through the whole length of the cheek. Groups B and D received ibuprofen. The quinolone levels in serum and tissues were estimated by the inhibition zone of B. subtilis. Free fatty acid (FFA) levels and the adrenal weight, considered as a stress index, were increased in trauma groups. Quinolone concentrations in serum and in most of the tissues were significantly higher in the experimental groups compared to the controls. However, the co-administration of ibuprofen caused a higher increase of the quinolone levels in the control animals than in the experimental groups.

16.
Eur J Drug Metab Pharmacokinet ; 27(4): 229-32, 2002.
Artigo em Inglês | MEDLINE | ID: mdl-12587951

RESUMO

The aim of this study is to examine the influence of acute (trauma) and chronic (cold swimming and adjuvant rheumatoid arthritis) stress on lidocaine concentrations in plasma. Forty male Wistar rats were used. The animals were divided into four groups. Group A served as control. Group B underwent mandible osteotomy. Group C was submitted to swimming stress in cold water 4 degrees C for ten minutes daily for 15 minutes, while group D underwent experimental arthritis with Freud's adjuvant. All groups received lidocaine i.m (2.5 mg/kg). Blood samples were collected and FFA (free fatty acid), unbound-lidocaine, albumin and a1-acid glycoprotein concentrations were estimated. Furthermore, the adrenals, heart and liver were isolated. The adrenals' relative weight (adrenal weight/body weight) was assessed, while lidocaine concentrations in the heart and the liver incubation medium were measured by intertechnic a-counter. Lidocaine and FFA levels in serum as well as the adrenal weights demonstrated a significant elevation in stress-groups as compared to the control group. Furthermore, in the stress-groups, lidocaine concentrations in heart tissue were significantly increased, whereas in the liver they were significantly reduced as compared to the control group. Our results indicate that stress can alter lidocaine levels in plasma and tissues, suggesting that stress should be considered an important factor when determining the dosage of lidocaine in clinical application.


Assuntos
Anestésicos Locais/farmacocinética , Lidocaína/farmacocinética , Estresse Fisiológico/metabolismo , Glândulas Suprarrenais/patologia , Anestésicos Locais/sangue , Animais , Artrite Experimental/metabolismo , Artrite Experimental/patologia , Temperatura Baixa , Pé/patologia , Hemoglobinas Glicadas/metabolismo , Injeções Intramusculares , Lidocaína/sangue , Masculino , Tamanho do Órgão/fisiologia , Ratos , Ratos Wistar , Estresse Fisiológico/patologia , Natação/fisiologia , Ferimentos e Lesões/metabolismo , Ferimentos e Lesões/patologia
17.
J BUON ; 7(1): 35-41, 2002.
Artigo em Inglês | MEDLINE | ID: mdl-17577258

RESUMO

PURPOSE: To evaluate the antitumor activity and toxicity of methotrexate (M), etoposide (V), ifosfamide (I) and cisplatin (P) combination chemotherapy (MVIP) administered to chemotherapy-naive patients with intermediate / poor prognosis germ-cell tumors (GCT) according to the International Germ Cell Cancer Collaborative Group (IGCCCG) consensus classification system (IGCCC). PATIENTS AND METHODS: From 1992 to 2001 24 consecutive intermediate (n=14)/poor prognosis (n=10) GCT male patients entered prospectively this phase II trial. Patients received methotrexate 250 mg/m(2), day 1, with folinic acid rescue; cisplatin 100 mg/m(2) with appropriate hydration, day 3; ifosfamide 5 g/m(2) with mesna uroprotection, day 3; and etoposide 100 mg/m(2)/day, days 3-5. MVIP was repeated every 3 weeks. RESULTS: After 120 cycles of MVIP (median 5, range 2- 7) 18 (75%) patients achieved complete remission (CR). CR was attained by 12 out of 14 (86%) intermediate prognosis and 6 out of 10 (60%) poor prognosis patients. Three CR patients (2 intermediate, 1 poor prognosis) of out 18 (16.7%) relapsed after a median of 6 months and 1 of them (poor prognosis) achieved a durable CR with second-line chemotherapy. After a median follow-up of 37 months (range 5-115 months) 16 patients (10, 71% intermediate and 6, 60% poor prognosis) are long-term survivors with no evidence of disease (NED), and 2 (one of each group) are alive with disease. Actuarial overall survival at 3 and more years is 75% and NED survival is 67%. Hematologic toxicity was most common and easily manageable (grade 3-4 neutropenia 46% of the cycles and thrombocytopenia 25% of the cycles). There were no deaths, withdrawals or delays in chemotherapy administration because of toxicity. CONCLUSION: MVIP conventional chemotherapy proved very effective in terms of CR rate, overall survival and longterm NED survival in these unfavorable groups of GCT patients. The results obtained are encouraging and compare favorably with those taken by more intensive regimens including high-dose chemotherapy. We believe that MVIP justifies further studies.

18.
J BUON ; 7(4): 337-45, 2002.
Artigo em Inglês | MEDLINE | ID: mdl-17955577

RESUMO

PURPOSE: To study the efficacy and toxicity of a combination of methotrexate, etoposide, ifosfamide and cisplatin (MVIP) in patients with germ-cell tumors (GCTs) refractory to or relapsed after first-line platinum-based chemotherapy. PATIENTS AND METHODS: Between 1989 and 2001 22 male patients with GCTs refractory (n=7) or relapsed (n=15) after first-line platinum-based chemotherapy entered prospectively the study. Their median age was 29 years. Methotrexate 250 mg/m(2) as 4-hour infusion plus folinic acid were administered on day 1. On day 3 cisplatin 100 mg/m(2) with pre and posthydration was given as 30-min infusion; and ifosfamide 5 g/m(2) with mesna as 24-hour infusion. Etoposide 100 mg/m(2)/day as 1-hour infusion was administered on days 3-5. Cycles were repeated every 3 weeks. Granulocyte colony stimulating factor (GCSF) was administered either therapeutically (grade 3-4 neutropenia-/+antibiotics) or prophylactically (nadir grade 3-4 neutropenia in the previous chemotherapy cycle). RESULTS: All patients were evaluable for response, toxicity and survival. A total of 95 cycles (median 4 cycles per patient) of MVIP were administered. Fourteen (63.6%) patient achieved complete response (CR), and 8 (36.4%) were treatment failures. Long-term disease-free survival (DFS) with MVIP was achieved in 11 out of 14 (78.6%) CR patients or 50% of all patients. After a median follow-up period of 55.04(+) months (range 4-147(+) months) overall survival is 59.09%. Good performance status (PS) was the only significant predictor for survival. Toxicity was easily manageable with no deaths or therapy delays. CONCLUSION: MVIP conventional chemotherapy proved particularly effective in terms of CR rate, overall survival and long-term DFS in this very poor prognosis patient population. Toxicity was tolerable. The results obtained are equal or even superior compared with those taken by more intensive regimens, including high-dose chemotherapy. MVIP justifies further studies in patients with refractory/ relapsed GCTs.

19.
Ann Oncol ; 11(10): 1249-54, 2000 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-11106112

RESUMO

PURPOSE: In a previous phase I trial we evaluated the toxicity and determined the maximum tolerated doses of the docetaxel (D)-epirubicin (Epi) combination. We conducted a multicenter phase II study to evaluate the efficacy and tolerability of this regimen as front-line treatment in women with advanced breast cancer (ABC). PATIENTS AND METHODS: Fifty-four women with ABC stage IIIB (4 patients) or IV (50 patients) received front-line treatment with Epi 70 mg/m2 on day 1 and D 90 mg/m2 on day 2. The median age was 55 years, performance status (WHO) was 0-1 in 49 patients and visceral disease was present in 45 (83%). RESULTS: All patients were evaluable for toxicity and 50 for response. In an intent-to-treat analysis complete remission was observed in 5(9%) patients, partial remission in 31 (57%) (overall response rate 66%, 95% confidence interval: 54% 79%), stable disease in 9 (17%) and disease progression in 9 (17%). After a median follow-up of 11.5 months, the median duration of responses was 8 months, the median time to disease progression 11.5 months and the median survival has not yet been reached. The probability of one-year survival was 65%. Three hundred six cycles of treatment were administered (median 6 cycles per patient). Grade 3 and 4 neutropenia was observed in 8 (15%) and 31 (57%) patients, respectively, and febrile neutropenia in 19 (35%). Prophylactic rh-G-CSF was used in 45 (83%) patients or 226 (74%) cycles. Other hematologic or non-hematologic toxicities were usually mild. In five (9%) patients the left ventricular ejection fraction (LVEF) was decreased by more than 10% with the treatment. Two patients died during the treatment of respiratory failure without associated neutropenia. CONCLUSIONS: The combination of docetaxel epirubicin is an effective and well tolerated front-line treatment in patients with ABC.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias da Mama/tratamento farmacológico , Taxoides , Adulto , Idoso , Docetaxel , Epirubicina/administração & dosagem , Epirubicina/efeitos adversos , Feminino , Fator Estimulador de Colônias de Granulócitos/uso terapêutico , Humanos , Pessoa de Meia-Idade , Paclitaxel/administração & dosagem , Paclitaxel/efeitos adversos , Paclitaxel/análogos & derivados , Proteínas Recombinantes
20.
J Rheumatol ; 27(11): 2545-50, 2000 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-11093432

RESUMO

OBJECTIVE: We studied the relation of pro and antiinflammatory cytokines to disease activity, coagulation, and fibrinolytic variables as well as to circulating intercellular adhesive molecule- 1 (cICAM-1), so as to better understand the cascade of events implicated in the inflammatory process in rheumatoid arthritis (RA). METHODS: Tumor necrosis factor-alpha (TNF-alpha), interleukin (IL)-6, IL-10, cICAM-1, tissue-type plasminogen activator (t-PA), plasminogen activator inhibitor- 1 (PAI-1), and D-dimer antigens were measured by ELISA in the blood of 45 RA patients and 33 healthy subjects (HS). The Stoke Index was used to describe the disease activity in patients, who were divided into subgroups: A: minimal-mild disease activity (n = 23, Stoke Index = 1-7); B: moderate disease activity (n = 12, Stoke Index = 8-11); C: severe disease activity (n = 9, Stoke Index = 12-17). RESULTS: TNF-alpha, IL-6, and IL-10 were significantly higher in RA patients than in HS. TNF-alpha and IL-6, in contrast to IL-10, have the tendency to increase progressively with the increase of disease activity from subgroup to subgroup, correlating significantly with Stoke Index. TNF-alpha and IL-6 correlated positively with PAI-1 and negatively with t-PA and D-dimer. Moreover, a positive correlation of IL-6 with fibrinogen and of both cytokines with PAI-1/t-PA molar ratio were found in all RA patients, while IL-10 showed a significant negative correlation only with PAI-1. Serum cICAM-1 was significantly elevated in RA compared to HS, showing a tendency to increase with the increase of disease activity from subgroup to subgroup. A positive correlation of cICAM-1 with TNF-alpha and IL-6 and a negative one with IL-10 was observed in RA. CONCLUSION: Proinflammatory cytokines TNF-alpha and IL-6 may be implicated in the imbalance of coagulation and fibrinolysis in favor of coagulation and the impairment of the adhesive molecule pathway in RA. This action of TNF-alpha and IL-6 does not seem to be countered by the antiinflammatory cytokine IL-1O action.


Assuntos
Artrite Reumatoide/fisiopatologia , Fibrinólise , Molécula 1 de Adesão Intercelular/sangue , Interleucina-10/fisiologia , Interleucina-6/fisiologia , Fator de Necrose Tumoral alfa/fisiologia , Idoso , Artrite Reumatoide/sangue , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Inibidor 1 de Ativador de Plasminogênio/sangue , Valores de Referência , Índice de Gravidade de Doença , Ativador de Plasminogênio Tecidual/sangue
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