共查询到20条相似文献,搜索用时 0 毫秒
1.
2.
Despite many years of meticulous immunophenotyping of childhood acute lymphoblastic leukaemia (ALL) cases the prognostic significance of some subtypes remains unclear. The Medical Research Council UKALLXI trial (1990-1996) in which uniform treatment has been given to 2090 children with ALL below the age of 18 years and above the age of 1 year, has afforded the opportunity to review these issues. Children with ALL of mature B cell type were not entered into this trial. Immunophenotype analysis was performed in each individual trial centre, but results were centrally reviewed in all cases, and were both available and considered adequate in 1934 (93%) of the first 2090 patients entered. The main diagnostic categories were early pre-B or null reported in 60 cases (3.1%), common ALL in 1242 (64.2%), pre-B in 252 (13.0%), 'common' or pre-B in 172 (8.9%) and T cell in 207 (10.7%) cases. Children with T cell disease were significantly more likely to be over the age of 10 years, with central nervous system disease at diagnosis and to be CD34 negative. They also had a higher incidence of high white cell count and were more likely to be of the French-American-British (FAB) L2 morphological subtype. Patients with 'null' cell disease tended to be less than 2 years or greater than 10 years of age, and CD13 and CD33 positive. CD10 was associated with lower white cell count (WBC) at diagnosis, younger age and FAB L1 morphological subtype. The presence of cytoplasmic immunoglobulin in pre-B cells was not associated with any specific clinical or laboratory features. CD34 positivity was less common in T cell patients and was associated with low WBC. Disease-free survival (DFS) and 95% confidence intervals (CI) at 5 years from diagnosis was 52% (95% CI: 44-59%) for T cell disease, 58% (95% CI: 43-73%) for early pre-B (or null cell) disease and 65% (95% CI: 62-68%) for common or pre-B disease; there being no significant difference between common and pre-B disease with regard to disease outcome. Patients with T cell disease had a worse prognosis than any other immunophenotype group (P < 0.00005). However this worse outcome was no longer significant after allowing for the other principal prognostic factors of age, gender and white cell count at diagnosis except for the very small number with WBC <20 x 10(9)/l and T cell disease. Those with CD10-positive leukaemia did better than those who were CD10 negative (P < 0.00005), with DFS at 5 years 64% (95% CI: 62-67%) for positive vs 56% (95% CI: 49-62%) for CD10 negative. CD10 positivity did not have independent significance when white count, gender and age were taken into account. CD13, CD33, and cytoplasmic mu positivity carried no prognostic significance. 相似文献
3.
D Rees D Grimwade S Langabeer A Burnett A Goldstone 《Canadian Metallurgical Quarterly》1997,96(3):490-492
Clinical evidence and the majority of experimental data suggest a cross-resistance between cisplatin and radiation in ovarian cancer. The authors are not aware of any report of a human ovarian cancer cell line for which the dose-response relationships to both radiation and chemotherapy including paclitaxel and cisplatin have been evaluated with the same methodology. The present study investigated the radiosensitivity profiles of four established human ovarian cancer cell lines in vitro using the ATP assay, which measures total cell kill. The CAOV-3 cell line showed the highest degree of radiosensitivity of the four cell lines. SKOV-3 cells were the most resistant. The BG-1 cell line, previously shown to be highly resistant to cisplatin but sensitive to paclitaxel, was distinctly sensitive to radiation. This was particularly true for the lower dosages (2-6 Gy). The four cell lines tested are a good representation of cell lines with different radiosensitivities. The different response patterns to cytotoxic agents and radiation, make the BG-1 cell line in particular an interesting candidate for future studies on mechanisms of resistance and combination effects between radiation and chemotherapy. 相似文献
4.
MT Drayson CE Chapman JA Dunn AB Olujohungbe IC Maclennan 《Canadian Metallurgical Quarterly》1998,101(1):195-202
We have recently reported the isolation of a rat cDNA encoding a receptor-type tyrosine phosphatase, which appears to be a marker of thyroid differentiation. To elucidate the molecular mechanisms underlying r-PTPeta expression in normal thyroid cells both in vitro and in vivo, we investigated the regulation of r-PTPeta expression in cultured thyrocytes (the rat cell line PC Cl 3) and in an animal model of TSH-dependent thyroid goitrogenesis. In vitro studies showed that mRNA expression of r-PTPeta in thyroid cells is induced in a time- and dose-dependent manner by the activation of growth- and differentiation-linked PKA pathways (TSH and forskolin), whereas it is down-regulated by the activation of the proliferative dedifferentiating PKC-dependent transduction pathway (TPA). However, the regulation of r-PTPeta expression by TSH and TPA, respectively, is observed only in normal thyroid cells, but is lost in transformed thyroid cells. In vivo studies with thiouracil-fed rats demonstrated that increased serum levels of TSH up-regulated r-PTPeta mRNA expression in parallel with the stimulation of thyroid growth and function. The reduction of blood TSH levels due to iodide refeeding to goitrous rats determined a marked down-regulation of r-PTPeta expression, in parallel with involution of thyroid hyperplasia. Taken together these results demonstrate that the phosphatase r-PTPeta is regulated by the two main thyroid regulatory pathways and suggest that it may play an important role in the growth and differentiation of thyroid cells. 相似文献
5.
RA Larson RK Dodge CA Linker RM Stone BL Powell EJ Lee P Schulman FR Davey SR Frankel CD Bloomfield SL George CA Schiffer 《Canadian Metallurgical Quarterly》1998,92(5):1556-1564
Recombinant human granulocyte colony-stimulating factor (G-CSF; filgrastim) shortens the time to neutrophil recovery after intensive chemotherapy, but its role in the treatment of adults with acute lymphoblastic leukemia (ALL) is uncertain. We randomly assigned 198 adults with untreated ALL (median age, 35 years; range, 16 to 83) to receive either placebo or G-CSF (5 microgram/kg/d) subcutaneously, beginning 4 days after starting intensive remission induction chemotherapy and continuing until the neutrophil count was >/=1, 000/microL for 2 days. The study assignment was unblinded as individual patients achieved a complete remission (CR). Patients initially assigned to G-CSF then continued to receive G-CSF through 2 monthly courses of consolidation therapy. Patients assigned to placebo received no further study drug. The median time to recover neutrophils >/=1,000/microL during the remission induction course was 16 days (interquartile range [IQR], 15 to 18 days) for the patients assigned to receive G-CSF and 22 days (IQR, 19 to 29 days) for the patients assigned to placebo (P < .001). Patients in the G-CSF group had significantly shorter durations of neutropenia (<1, 000/microL) and thrombocytopenia (<50,000/microL) and fewer days in the hospital (median, 22 days v 28 days; P = .02) compared with patients receiving placebo. The patients assigned to receive G-CSF had a higher CR rate and fewer deaths during remission induction than did those receiving placebo (P = .04 by the chi-square test for trend). During Courses IIA and IIB of consolidation treatment, patients in the G-CSF group had significantly more rapid recovery of neutrophils >/=1,000/microL than did the control group by approximately 6 to 9 days. However, the patients in the G-CSF group did not complete the planned first 3 months of chemotherapy any more rapidly than did the patients in the placebo group. Overall toxicity was not lessened by the use of G-CSF. After a median follow-up of 4. 7 years, there were no significant differences in either the disease-free survival (P = .53) or the overall survival (P = .25) for the patients assigned to G-CSF (medians, 2.3 years and 2.4 years, respectively) compared with those assigned to placebo (medians, 1.7 and 1.8 years, respectively). Adults who received intensive chemotherapy for ALL benefited from G-CSF treatment, but its use did not markedly affect the ultimate outcome. 相似文献
6.
Alterations in sexual health caused by inflammatory bowel disease (IBD) may affect quality of life and disease status. IBD usually strikes adolescents or young adults, who are also facing developmental milestones important to sexual health. Issues include growth and development, body image, intimacy and sexual functioning, fertility, and pregnancy. A review of published research regarding these issues, in addition to suggestions for nursing assessment and interventions, is included in this article. Nurses must offer sensitive support and suggestions for coping. Nurses must be aware of the issues influencing sexual health when providing total care to clients with IBD. 相似文献
7.
8.
SE Langabeer D Grimwade H Walker JR Rogers AK Burnett AH Goldstone DC Linch 《Canadian Metallurgical Quarterly》1998,101(2):338-340
9.
SP Stenning MC Parkinson C Fisher GM Mead PA Cook SD Fossa A Horwich WG Jones ES Newlands RT Oliver AE Stenwig PM Wilkinson 《Canadian Metallurgical Quarterly》1998,83(7):1409-1419
BACKGROUND: In a retrospective study that included a detailed histopathologic review, the clinicopathologic features of patients with germ cell tumors (GCT) and resectable residual masses after chemotherapy were assessed. METHODS: Histologic material from 153 patients was available for review. Recorded details included primary histologic diagnosis, location, size and number of metastases, marker levels before and after chemotherapy, and completeness of surgical excision. A median of seven histologic sections per resection were reviewed by two pathologists independently (and together when disagreement occurred). In each case, details were recorded regarding fibrosis, necrosis, hemorrhage, embryonal carcinoma (undifferentiated teratoma), yolk sac tumor, choriocarcinoma (trophoblastic tumor), differentiated teratoma (mature and immature), dysplasia in somatic tissues, and non- germ cell tumor (GCT) malignancies. The percentage of the sample that each of these components comprised was also estimated. RESULTS: The median postchemotherapy follow-up time was 7 years, and 38 of 153 patients (25%) experienced disease progression. In a multivariate analysis, incomplete resection of all residual masses (in 38 patients) and the presence of malignant elements (in 23 patients) were independent risk factors for progression. In the subset of patients in whom all masses were completely resected, the presence of embryonal carcinoma (undifferentiated teratoma) was the single most significant risk factor for progression. Seven percent of patients had this factor, which was associated with a 2-year progression free survival rate of 12.5%, compared with 88.0% where this component was absent. CONCLUSIONS: Progression free survival can be predicted well by the completeness of excision of residual masses and the presence of malignant germ cell elements. The latter confers a relatively poor prognosis even if all of these elements are completely resected. 相似文献
10.
MS Maldonado C Díaz-Heredia I Badell A Mu?oz JJ Ortega J Cubells E Otheo T Olive C Canals J Pérez-Oteyza 《Canadian Metallurgical Quarterly》1998,22(11):1043-1047
The purpose of this study was to evaluate the outcome of children with acute lymphoid leukemia (ALL) in second remission who have undergone high-dose chemotherapy and radiotherapy and autologous bone marrow transplantation (ABMT) with monoclonal antibody purged marrow, and to determine the main prognostic factors. From 1987 to 1992, 55 children with ALL in second remission underwent ABMT. The conditioning regimen consisted of total body irradiation (TBI) plus cyclophosphamide in 21 patients and TBI plus cyclophosphamide plus cytarabine or VP-16 in 28 patients; the remaining six patients were treated with chemotherapy alone (cyclophosphamide and busulfan, and/or VP-16). The marrow was purged using monoclonal antibodies and complement or magnetic microspheres in all cases. All patients engrafted. Three patients (5%) died early post transplant from infections. Twenty-six patients (47%) relapsed (median 150 days); 26 patients (47%) are alive and in complete remission (CR) at a median of 36 months. The Kaplan-Meier estimation showed a probability of event-free survival (EFS) of 46 +/- 0.007%. In the univariate analysis, first CR length and conditioning with TBI plus two or more cytotoxic drugs were found to be the most significant predictors of EFS. ABMT with purged marrow is a treatment modality which offers a chance of cure in children with ALL after relapse, including children who relapse early. 相似文献
11.
Gosselin Patrick; Ladouceur Robert; Morin Charles M.; Dugas Michel J.; Baillargeon Lucie 《Canadian Metallurgical Quarterly》2006,74(5):908
This study evaluated the specific effectiveness of cognitive-behavior therapy (CBT) combined with medication tapering for benzodiazepine discontinuation among generalized anxiety disorder (GAD) patients by using a nonspecific therapy control group. Sixty-one patients who had used benzodiazepines for more than 12 months were randomly assigned to the experimental conditions. Nearly 75% of patients in the CBT condition completely ceased benzodiazepine intake, as compared with 37% in the control condition. Results of the 3-, 6-, and 12-month follow-ups confirmed the maintenance of complete cessation. Discontinuation rates remained twice as high in the CBT condition. The number of patients who no longer met GAD criteria was also greater in the CBT condition. The addition of specific CBT components thus seemed to facilitate benzodiazepine tapering among patients with GAD. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
12.
BACKGROUND: Universal clinical screening for congenital dislocation of the hip to detect hip instability in neonates was introduced in the UK as a national policy in 1969, but its effectiveness is not known. We aimed to assess the extent to which surgery for congenital dislocation of the hip is the result of a failure of detection through screening or follows non-surgical treatment after detection by screening. METHODS: We established a national orthopaedic surveillance scheme and used routine hospital data for inpatients for 20% of births in the UK (Scotland and the Northern and Wessex regions) to ascertain the number of children aged under 5 years per 1000 livebirths who had received at least one operative procedure for congenital dislocation of the hip from April, 1993, to April, 1994. Estimates of the incidence of operative procedures were adjusted for under-ascertainment by capture-recapture techniques. FINDINGS: The ascertainment-adjusted incidence of a first operative procedure for congenital dislocation of the hip in the UK was 0.78 per 1000 livebirths (95% CI 0.72-0-84). Congenital dislocation of the hip had not been detected by routine screening in 222 (70%) of 318 children reported to the national orthopaedic surveillance scheme. In 112 (35%) children the diagnosis was made primarily as a result of parental concern. 67 (21%) children had previously received non-surgical treatment. In Scotland and the Northern and Wessex regions, 81 cases were notified to the national orthopaedic surveillance scheme, 62 cases were identified only through routine hospital data on inpatients, and an estimated 20 cases were not identified by either source, making a total of 163 cases. Thus, 81 (50%) of these 163 cases were identified by surveillance, 125 (77%) by routine data, and 143 (88%) by both sources. INTERPRETATION: The incidence of a first operative procedure for congenital dislocation of the hip in the UK was similar to that reported before screening was introduced. In most children who received surgery, congenital dislocation of the hip was not detected by screening. Formal evaluation of current and alternative screening policies, including universal primary ultrasound imaging, is needed. 相似文献
13.
W Stalman GA van Essen Y van der Graaf RA de Melker 《Canadian Metallurgical Quarterly》1997,47(425):794-799
BACKGROUND: Acute sinusitis-like complaints are very common and are usually treated with antibiotics in spite of the lack of evidence for the effectiveness of antibiotic therapy and the increasing number of resistant strains. AIM: To assess the effectiveness of doxycycline in adults with acute sinusitis-like complaints in general practice. METHOD: The effects of doxycycline in a placebo-controlled, double-blind, randomized trial were assessed in adults consulting their general practitioner (GP) with complaints after a common cold or influenza, pain in the head when bending forward, purulent nasal discharge, predominantly unilateral maxillary pain, toothache, or pain when chewing. Primary outcome events were the resolution of facial pain and the resumption of daily activities. Treatment differences were assessed by means of Kaplan-Meier curves and hazard ratios. The follow-up period was 42 days. RESULTS: No significant difference was found in time to recover between the doxycycline-treated group and the placebo-treated group. However, the adjusted hazard ratio for the group receiving doxycycline was 1.17 (95% CI = 0.87-1.57) for the resolution of pain and 1.31 (95% CI = 0.96-1.78) for the resumption of daily activities. After 10 days, 85% of all patients reported improvement and 60% were completely cured. Side effects were reported by 17% of the doxycycline-treated group, with two patients withdrawing because of side effects. CONCLUSIONS: Data from this study indicate that doxycycline does not add to the effectiveness of decongestive nose drops and steam inhalation in treating acute sinusitis-like complaints in general practice adults. 相似文献
14.
M Benesch R Kerbl H Lackner A Berghold W Schwinger K Triebl-Roth C Urban 《Canadian Metallurgical Quarterly》2003,25(10):797-800
15.
Scogin Forrest; Morthland Martin; Kaufman Allan; Burgio Louis; Chaplin William; Kong Grace 《Canadian Metallurgical Quarterly》2007,22(4):657
The efficacy of home-delivered cognitive-behavioral therapy (CBT) in improving quality of life and reducing psychological symptoms in older adults was examined in this study. One hundred thirty-four participants, predominately African American and characterized as primarily rural, low resource, and physically frail, were randomly assigned to either CBT or a minimal support control condition. Results indicate that CBT participants evidenced significantly greater improvements in quality of life and reductions in psychological symptoms. Mediation of treatment through cognitive and behavioral variables was not found despite the acceptable delivery of CBT by research therapists. These data suggest that treatment can be effective with a disadvantaged sample of older adults and extend efficacy findings to quality of life domains. Creating access to evidence-based treatments through nontraditional delivery is an important continuing goal for geriatric health care. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
16.
HR Rosen G Jatzko S Repse S Potrc H Neudorfer P Sandbichler J Zacherl H Rabl P Holzberger P Lisborg M Czeijka 《Canadian Metallurgical Quarterly》1998,16(8):2733-2738
PURPOSE: Previous studies have demonstrated a beneficial effect of intraperitoneally applied mitomycin bound to activated carbon particles (M-CH) in preventing intraabdominal recurrence following curative surgery for gastric cancer. The Austrian Working Group for Stomach Cancer, a subgroup of the Austrian Working Group for Surgical Oncology, initiated a multicentric phase III trial to evaluate the safety and efficacy of this treatment regimen. PATIENTS AND METHODS: A total of 91 patients with a radically resected gastric cancer infiltrating the serosal surface were randomly assigned to receive either 50 mg mitomycin bound to a solution of 375 mg carbo adsorbens intraperitoneally before closure of the abdominal wound (n = 46) or served as a surgical control group (n = 45). Postoperative complications and recurrence-free and overall survival were evaluated to analyze the risks and benefits of this treatment. RESULTS: After a median observation period of 597 days (range, 72 to 1,096), a significantly higher postoperative complication rate was observed in the M-CH group (35%) compared with the control group (16%) (P < .02). In accordance with this finding, the postoperative (60 days) mortality rate was also significantly elevated in the M-CH group (11% v 2% in the control group). Since analysis of overall and recurrence-free survival failed to show any beneficial effect of M-CH therapy, the protocol committee decided to stop further recruitment of patients onto this study. CONCLUSION: Adjuvant intraperitoneal therapy of gastric cancer by mitomycin bound to activated carbon particles is associated with an increased rate of postoperative complications. However, no benefit for prognosis following radical resection of locally advanced tumors was observed in this multicenter phase III trial. 相似文献
17.
Rea Margaret M.; Tompson Martha C.; Miklowitz David J.; Goldstein Michael J.; Hwang Sun; Mintz Jim 《Canadian Metallurgical Quarterly》2003,71(3):482
Recently hospitalized bipolar, manic patients (N=53) were randomly assigned to a 9-month, manual-based, family-focused psychoeducational therapy (n=28) or to an individually focused patient treatment (n=25). All patients received concurrent treatment with mood-stabilizing medications. Structured follow-up assessments were conducted at 3-month intervals for a 1-year period of active treatment and a 1-year period of posttreatment follow-up. Compared with patients in individual therapy, those in family-focused treatment were less likely to be rehospitalized during the 2-year study period. Patients in family treatment also experienced fewer mood disorder relapses over the 2 years, although they did not differ from patients in individual treatment in their likelihood of a first relapse. Results suggest that family psychoeducational treatment is a useful adjunct to pharmacotherapy in decreasing the risk of relapse and hospitalization frequently associated with bipolar disorder. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
18.
Many tinnitus sufferers believe that their tinnitus has an organic basis and thus seek medical rather than psychological treatments. Tinnitus has been found to be associated with negative appraisal, dysfunctional attention shift, and heightened psychophysiological arousal, so cognitive-behavioral interventions and biofeedback are commonly suggested as treatments. This study developed and investigated the efficacy of a biofeedback-based cognitive-behavioral treatment for tinnitus. In total, 130 tinnitus patients were randomly assigned to an intervention or a wait-list control group. Treatment consisted of 12 sessions of a biofeedback-based behavioral intervention over a 3-month period. Patients in the wait-list group participated in the treatment after the intervention group had completed the treatment. Results showed clear improvements regarding tinnitus annoyance, diary ratings of loudness, and feelings of controllability. Furthermore, changes in coping cognitions as well as changes in depressive symptoms were found. Improvements were maintained over a 6-month follow-up period in which medium-to-large effect sizes were observed. The treatment developed and investigated in this study is well accepted and leads to clear and stable improvements. Through demonstration of psychophysiological interrelationships, the treatment enables patients to change their somatic illness perceptions to a more psychosomatic point of view. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
19.
Belleville Geneviève; Guay Catherine; Guay Bernard; Morin Charles M. 《Canadian Metallurgical Quarterly》2007,75(2):325
This study aimed to assess the efficacy of a minimal intervention focusing on hypnotic discontinuation and cognitive-behavioral treatment (CBT) for insomnia. Fifty-three adult chronic users of hypnotics were randomly assigned to an 8-week hypnotic taper program, used alone or combined with a self-help CBT. Weekly hypnotic use decreased in both conditions, from a nearly nightly use at baseline to less than once a week at posttreatment. Nightly dosage (in lorazepam equivalent) decreased from 1.67 mg to 0.12 mg. Participants who received CBT improved their sleep efficiency by 8%, whereas those who did not remained stable. Total wake time decreased by 52 min among CBT participants and increased by 13 min among those receiving the taper schedule alone. Total sleep time remained stable throughout withdrawal in both CBT and taper conditions. The present findings suggest that a systematic withdrawal schedule might be sufficient in helping chronic users stop their hypnotic medication. The addition of a self-help treatment focusing on insomnia, a readily available and cost-effective alternative to individual psychotherapy, produced greater sleep improvement. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
20.
The purpose of this study was to examine the comparative efficacy of cognitive rehabilitation as an intervention for substance misuse. Patients with substance use disorders entering long-term residential care (N = 160) were randomly assigned to one of two conditions: (a) standard treatment plus computer-assisted cognitive rehabilitation (CACR), which was designed to improve cognitive performance in areas such as problem solving, attention, memory, and information processing speed; and (b) an equally intensive attention control condition consisting of standard treatment plus a computer-assisted typing tutorial (CATT). Participants were assessed at baseline, during treatment, at treatment completion, and 3-, 6-, 9-, and 12-month follow-up. Intent-to-treat analyses showed that, compared with those randomized to CATT, patients who received CACR were significantly more engaged in treatment (e.g., higher ratings of positive participation by treatment staff, higher ratings of therapeutic alliance), more committed to treatment (e.g., longer stays in residence) and reported better long-term outcomes (e.g., higher percentage of days abstinent after treatment). Mediational analyses revealed the positive comparative effect of CACR on abstinence during the year after treatment was mediated by treatment engagement and length of stay in residence. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献