Physical performance limitations among adult survivors of childhood brain tumors

BACKGROUND:

Young adult survivors of childhood brain tumors (BTs) may have late effects that compromise physical performance and everyday task participation. The objective of this study was to evaluate muscle strength, fitness, physical performance, and task participation among adult survivors of childhood BTs.

METHODS:

In‐home evaluations and interviews were conducted for 156 participants (54% men). Results on measures of muscle strength, fitness, physical performance, and participation were compared between BT survivors and members of a population‐based comparison group by using chi‐square statistics and 2‐sample t tests. Associations between late effects and physical performance and between physical performance and participation were evaluated in regression models.

RESULTS:

The median age of BT survivors was 22 years (range, 18‐58 years) at the time of the current evaluation, and they had survived for a median of 14.7 years (range, 6.5‐45.9 years) postdiagnosis. Survivors had lower estimates of grip strength (women, 24.7 ± 9.2 kg vs 31.5 ± 5.8 kg; men, 39.0 ± 12.2 kg vs 53.0 ± 10.1 kg), knee extension strength (women, 246.6 ± 95.5 Newtons [N] vs 331.5 ± 5.8 N; men, 304.7 ± 116.4 N vs 466.6 ± 92.1 N), and peak oxygen uptake (women, 25.1 ± 8.8 mL/kg per minute vs 31.3 ± 5.1 mL/kg per minute; men, 24.6 ± 9.5 mL/kg per minute vs 33.2 ± 3.4 mL/kg per minute) than members of the population‐based comparison group. Physical performance was lower among survivors and was associated with not living independently (odds ratio [OR], 5.0; 95% confidence interval [CI], 2.0‐12.2) and not attending college (OR, 2.3; 95% CI 1.2‐4.4).

CONCLUSIONS:

Muscle strength and fitness values among BT survivors were similar to those among individuals aged ≥60 years and were associated with physical performance limitations. Physical performance limitations were associated with poor outcomes in home and school environments. The current data indicated an opportunity for interventions targeted at improving long‐term physical function in this survivor population. Cancer 2010. © 2010 American Cancer Society.     

Physical activity among breast cancer survivors: regular exercisers vs participants in a physical activity intervention

BACKGROUND: Secondary prevention is of great importance in the cancer survivor population, given the substantial medical risks survivors face. Consequently, researchers have begun developing interventions that target behavioral risk factors, such as sedentary lifestyle, among survivors. This study represents a novel approach for evaluating the efficacy of a physical activity intervention for breast cancer survivors. METHODS: Repeated measures analyses were used to compare a group of previously sedentary breast cancer survivors offered a physical activity intervention (n=43) with a group of regularly active survivors (n=40). These two groups were compared on select behavioral and psychosocial measures associated with physical activity. RESULTS: Results indicated significant time x group effects on the following: behavioral processes of change, minutes of moderate-intensity activity/week, and time to complete the one-mile walk test (a measure of fitness). There was also a borderline significant interaction for self-efficacy. Contrasts indicated that, for each interaction, previously sedentary and regularly active survivors differed at baseline, but were not significantly different postintervention. CONCLUSIONS: Thus, after completing a 12-week physical activity intervention, previously sedentary breast cancer survivors became similar to regularly active survivors on select behavioral and psychosocial measures associated with physical activity.     

Disseminated tumour cells as a prognostic biomarker in colorectal cancer

Background:

The study was performed to determine detection rate and prognostic relevance of disseminated tumour cells (DTC) in patients receiving curatively intended surgery for colorectal cancer (CRC).

Methods:

The study population consisted of 235 patients with CRC prospectively recruited from five hospitals in the Oslo region. Bone marrow (BM) aspirates were collected at the time of surgery and the presence of DTC was determined by two immunological methods; immunomagnetic selection (using an anti-EpCAM antibody) and immunocytochemistry (using a pan-cytokeratin antibody). Associations between the presence of DTC and metastasis-free, disease-specific and overall survival were analysed using univariate and multivariate methods.

Results:

Disseminated tumour cells were detected in 41 (17%) and 28 (12%) of the 235 examined BM samples by immunomagnetic selection and immunocytochemistry, respectively, with only five samples being positive with both methods. The presence of DTC was associated with adverse outcome (metastasis-free, disease-specific and overall survival) in univariate and multivariate analyses.

Conclusion:

The presence of DTC was associated with adverse prognosis in this cohort of patients curatively resected for CRC, suggesting that DTC detection still holds promise as a biomarker in CRC.     

Educational attainment among survivors of childhood cancer: a population-based cohort study in Denmark

We identified 2384 patients in the Danish Cancer Register in whom cancer had been diagnosed in 1960-1996 before they reached the age of 20 and compared them with 53 143 sex- and age-matched controls identified from the Register of Population Statistics. Complete education records and demographic and socioeconomic information for the period 1980-2000 were obtained for both cohorts from Statistics Denmark. The rate ratio (RR) for educational attainment was estimated by discrete-time Cox regression analyses. An overall reduction in attaining basic education was found (RR, 0.90; 95% confidence interval, 0.83-0.96). Female survivors of central nervous system (CNS) tumours showed the largest educational deficit (RR, 0.55; 95% confidence interval, 0.37-0.82). Non-CNS tumour survivors attained education as controls at most levels. When the analyses were conditioned on completion of youth education, further educational attainment was not reduced for any group of survivors. These findings confirm that only survivors of CNS tumours in childhood experience significant educational deficits. The deficit was mainly seen among persons whose tumour was diagnosed before they reached the level of secondary education.     

Transglutaminase 3 as a prognostic biomarker in esophageal cancer revealed by proteomics

To develop a prognostic biomarker for esophageal squamous cell carcinoma (ESCC), we examined the proteomic profile of ESCC using two‐dimensional difference gel electrophoresis (2D‐DIGE), and identified proteins associated with prognosis by mass spectrometry. The prognostic performance of the identified proteins was examined by immunohistochemistry in additional cases. We identified 22 protein spots whose intensity was statistically different between ESCC cases with good (N = 9; survived more than 5 years without evidence of recurrence) and poor (N = 24; died within 2 years postsurgery) prognosis, within the patient group that had two or more lymph node metastases. Mass spectrometric protein identification resulted in 18 distinct gene products from the 22 protein spots. Transglutaminase 3 (TGM3) was inversely correlated with shorter patient survival. The prognostic performance of TGM3 was further examined by immunohistochemistry in 76 ESCC cases. The 5‐year disease‐specific survival rate was 64.5% and 32.1% for patients with TGM3‐positive and TGM3‐negative tumors, respectively (p = 0.0033). Univariate and multivariate analyses revealed that TGM3 expression was an independent prognostic factor among the clinicopathologic variables examined. It is noteworthy that the prognostic value of TGM3 was shown to be higher than those of the lymph node metastasis, intramural metastasis and vascular invasion status. These results establish TGM3 as a novel prognostic biomarker for ESCC for the first time. Examination of TGM3 expression may provide novel therapeutic strategies to prevent recurrence of ESCC. © 2008 Wiley‐Liss, Inc.     

MAP17 (PDZKIP1) as a novel prognostic biomarker for laryngeal cancer

Larynx cancer organ preservation treatments with chemo and radiotherapy have substantially improved laryngoesophageal dysfunction-free survival. However, both of them lead to a high incidence of acute and chronic toxicities and a significant number of patients relapse. To date, there is no evidence available to establish the group of patients that may benefit from preservation approaches and clinical criteria such as primary tumor extension or pretreatment tracheotomy are not validated. MAP17 is a small non-glycosylated membrane protein overexpressed in carcinomas. The tumoral behavior induced by MAP17 is associated with reactive oxygen species production in which SGLT1 seems involved. In this study we found that the levels of MAP17 were related to clinical findings and survival in a cohort of 58 patients with larynx cancer. MAP17 expression is associated with overall survival (p<0.001) and laryngoesophageal dysfunction-free survival (p=0.002). Locoregional control in patients with high MAP17 showed better outcomes than those with low MAP17 (p=0.016). Besides, a positive correlation was observed between MAP17 expression and SGLT (p=0.022) and the combination of high levels of MAP17/SGLT also led to an increased overall survival (p=0,028). These findings suggest that MAP17, alone or in combination with SGLT1, may become a novel predictive biomarker for laryngeal carcinoma.     

Physical activity levels and supportive care needs for physical activity among breast cancer survivors with different psychosocial profiles: a cluster‐analytical approach

CHARLIER C., PAUWELS E., LECHNER L., SPITTAELS H., BOURGOIS J., DE BOURDEAUDHUIJ I. & VAN HOOF E. (2012) European Journal of Cancer Care Physical activity levels and supportive care needs for physical activity among breast cancer survivors with different psychosocial profiles: a cluster‐analytical approach The transition from breast cancer patient to survivor is associated with many treatment‐related and psychosocial factors, which can influence health behaviour and associated needs. First, this study aimed to identify clusters of treatment‐related and psychosocial factors among breast cancer survivors. Second, clusters' physical activity levels and care needs for physical activity were evaluated. Breast cancer survivors (n= 440; 52 ± 8 years) (3 weeks to 6 months post treatment) completed self‐reports on physical and psychological symptoms; illness representations; social support and coping; physical activity and care needs for physical activity. Analyses identified four clusters: (1) a low distress‐active approach group; (2) a low distress‐resigned approach group; (3) a high distress‐active approach group; and (4) a high distress‐emotional approach group. Physical activity levels were higher in the low distress groups than in the high distress‐emotional approach group. However, women with low distress and an active approach reported equal care needs for physical activity than women with high distress and an emotional approach. These findings suggest that care needs for physical activity are unrelated to distress and actual physical activity levels. The results emphasise the importance of screening for needs and provide a framework supporting the referral of breast cancer survivors to tailored interventions.     

A pilot study on disseminating physical activity promotion among cancer survivors: a brief report

There is growing evidence that physical activity (PA) can improve quality of life (QOL) and reduce fatigue in cancer survivors. Research staff or healthcare providers have delivered PA interventions to cancer populations. As a first step to dissemination of a previously tested PA intervention, seven American Cancer Society Reach to Recovery volunteers (mean age = 57.4 years) were trained to deliver the telephone-based intervention to 25 breast cancer survivors (mean age = 52.9 years, 56% Stage 2 cancer, mean of 3.3 years since diagnosis). A single group design was used. The theory-based intervention consisted of 12 weekly calls to encourage participants to adopt moderate-intensity PA. Participants' PA, QOL, mood, and fatigue were assessed at baseline, 12, and 24 weeks. Data on intervention feasibility and preliminary effects were collected. The intervention was feasible (mean of 10.7 out of 12 calls were delivered) and acceptable to the volunteers. At 12 weeks, there were significant increases in participants' PA and improvements in fatigue, QOL, and vigor. Effects were maintained at 24 weeks. This pilot study demonstrated that it was feasible for trained volunteers to deliver a telephone-based PA intervention to breast cancer survivors, and there were positive effects on survivors' PA behavior and psychological outcomes.     

Antibody response to BK polyomavirus as a prognostic biomarker and potential therapeutic target in prostate cancer

Infectious agents, including the BK polyomavirus (BKPyV), have been proposed as important inflammatory pathogens in prostate cancer. Here, we evaluated whether the preoperative antibody response to BKPyV large T antigen (LTag) and viral capsid protein 1 (VP1) was associated with the risk of biochemical recurrence in 226 patients undergoing radical prostatectomy for primary prostate cancer. Essentially, the multivariate Cox regression analysis revealed that preoperative seropositivity to BKPyV LTag significantly reduced the risk of biochemical recurrence, independently of established predictors of biochemical recurrence such as tumor stage, Gleason score and surgical margin status. The predictive accuracy of the regression model was denotatively increased by the inclusion of the BKPyV LTag serostatus. In contrast, the VP1 serostatus was of no prognostic value. Finally, the BKPyV LTag serostatus was associated with a peculiar cytokine gene expression profile upon assessment of the cellular immune response elicited by LTag. Taken together, our findings suggest that the BKPyV LTag serology may serve as a prognostic factor in prostate cancer. If validated in additional studies, this biomarker may allow for better treatment decisions after radical prostatectomy. Finally, the favorable outcome of LTag seropositive patients may provide a potential opportunity for novel therapeutic approaches targeting a viral antigen.     

Circulating cell-free DNA in serum as a biomarker for diagnosis and prognostic prediction of colorectal cancer

Background:

To verify whether the concentrations and integrity index of circulating cell-free DNA (ccf-DNA) in serum may be clinically useful for the diagnosis and progression monitoring of colorectal cancer (CRC) patients.

Methods:

Serum samples were collected from 104 with primary CRC, 85 with operated CRC, 16 with recurrent/metastatic CRC, 63 patients with intestinal polyps and 110 normal controls. Long (247 bp) and short (115 bp) DNA fragments in serum were detected by real-time quantitative PCR by amplifying the ALU repeats (ALU-qPCR). Serum carcinoembryonic antigen (CEA) level was detected by ARCHITECT assay.

Results:

The median absolute serum ALU115 and ALU247/115 in primary CRC group was significantly higher than those in intestinal polyp and normal control groups (both P<0.0001), in recurrent/metastatic CRC was significantly higher compared with primary CRC (P=0.0021, P=0.0018) or operated CRC (P<0.0001, respectively) and during follow-up, ALU115 and ALU247/115 were increased before surgery and decreased significantly after surgery.

Conclusions:

Combined detection of ALU115, ALU247/115 and CEA could improve the diagnostic efficiency for CRC. Serum DNA concentrations and integrity index may be valuable in early complementary diagnosis and monitoring of progression and prognosis of CRC.     

Serum macrophage migration‐inhibitory factor as a diagnostic and prognostic biomarker for gastric cancer

BACKGROUND:

This study aimed to determine the potential diagnostic value of migration‐inhibitory factor (MIF) for gastric cancer in patients presenting with dyspepsia and its prognostic value for gastric cancer.

METHODS:

A cohort of 97 patients with histologically confirmed gastric adenocarcinoma and 222 patients with dyspepsia were recruited. Enzyme‐linked immunosorbent assay was used to measure serum MIF and carcinoembryonic antigen (CEA).

RESULTS:

The serum MIF concentrations were 6554.0 ± 204.1 pg/mL and 1453.7 ± 79.9 pg/mL, respectively, in gastric cancer patients and dyspeptic patients (P < .001). Serum MIF levels increased with the advancing gastric pathologies (P < .001). With the cutoff value of 3230 pg/mL, serum MIF had sensitivity, specificity, and accuracy of 83.5%, 92.3%, and 89.7%, respectively, in diagnosing gastric cancer, whereas the rates were 60.8%, 83.3%, and 76.5%, respectively, for serum CEA. Gastric cancer patients with serum MIF levels above 6600 pg/mL had a lower 5‐year survival rate than those with serum MIF level below that level (P = .012). Higher serum CEA levels were also associated with poor survival. The prediction for 5‐year survival was even better (P = .0001), using a combination of serum MIF and CEA.

CONCLUSIONS:

Serum MIF level, which correlates with gastric MIF expression, is a better molecular marker than CEA in diagnosing gastric cancer in patients presenting with dyspepsia. A combination of serum MIF and CEA predicts 5‐year survival better than the individual test. Cancer 2009. © 2009 American Cancer Society.