Histological staining alters circular dichroism SHG measurements of collagen.

Circular dichroism second harmonic generation microscopy (CDSHG) is a powerful imaging technique, which allows three-dimensional visualization of collagen fibril orientation in tissues. However, recent publications have obtained contradictory results on whether CDSHG can be used to reveal the relative out-of-plane polarity of collagen fibrils. Here we compare CDSHG images of unstained tendon and tendon which has been stained with hematoxylin and eosin. We find significant differences in the CDSHG between these two conditions, which explain the recent contradictory results within the literature.

The financial impact of cancer on Canadian young adults.

PURPOSE: To explore the financial impact of cancer in young adults (YAs) compared to matched non-cancer peers. METHODS: Five hundred seventy-five YAs from the Young Adults with Cancer in their Prime (YACPRIME) study reported on out-of-pocket cancer costs and missed work. YA cancer survivors were compared to matched peers without cancer on key financial indices based on current age (< 35 vs. 35 + years) and time since diagnosis (< 5 vs. 5 + years). Descriptive statistics, Chi-square tests, and prevalence ratios (PR) were used to compare groups on financial variables. RESULTS: Almost 60% of YA survivors spent at least $100/month on cancer-related expenses, and 49% missed at least one year of work. YA survivors were more likely to have outstanding credit card ((< 35 (PR = 1.37, p = 0.001); 35 + (PR = 1.33, p = 0.001)) and line of credit (< 35 (PR = 1.42, p = 0.008); 35 + (PR = 1.27, p = 0.016)) balances. Home ownership was higher among non-cancer peers ((< 35: PR = 1.42, p < 0.001); 35 + (PR = 1.69, p < 0.001); < 5 years (PR = 1.39, p < 0.001); 5 + years (PR = 1.41, p = 0.005)). YA survivors were more likely to not own assets ((< 5 years (PR = 2.25, p < 0.001); 5 + years (PR = 2.25, p = 0.004)). Those diagnosed within 5 years had higher rates of payday loans (PR = 3.91, p = 0.021). CONCLUSION: While exploratory, results suggest that YAs are disadvantaged compared to their peers in type and value of assets owned and debts carried. IMPLICATIONS FOR CANCER SURVIVORS: Survivorship care plans for YA survivors should include resources to manage the financial impacts of cancer.

Prevalence and factors associated with high levels of distress in young adult cancer survivors compared to matched peers.

OBJECTIVE: Young adulthood can be a difficult period of development and disruption of age-related milestones can impact psychological well-being. This study examined whether psychological distress differs in young adult (YA) cancer survivors compared to their non-cancer peers and identified factors related to high distress in YA cancer survivors. METHODS: Canadian YAs (n = 448) diagnosed between the ages of 15 and 39 were compared with age-, sex-, and education-matched controls (n = 448) randomly sampled from the 2012 Canadian Community Health Survey-Mental Health. The primary measure was the Kessler Psychological Distress Scale (K10). Groups were compared using independent-samples t tests and chi-square tests of independence. Logistic regression was used to examine the factors associated with high (moderate/severe) distress for YA cancer survivors. RESULTS: YA cancer survivors reported significantly higher distress than their matched peers (24.89 vs. 15.75; p < .0005). In the multivariate model, greater years of education were associated with a decreased likelihood of high distress (adjusted odds ratio (AOR) = 0.84, p = .001). Compared with those working, those in school (AOR = 6.81, p = .003) or not in school/working (AOR = 4.13, p < .0005) reported higher distress. Psychological factors associated with high distress in YA cancer survivors included body image dissatisfaction (AOR = 1.09, p < .0005), poor social support (AOR = 5.19, p = .011), and elevated fears of cancer recurrence (maladaptive: AOR = 6.39, p = .001; clinical: AOR = 12.31, p < .0005). CONCLUSIONS: YA cancer survivors experience significantly greater distress than their non-cancer peers. This distress is associated with modifiable factors such as body image dissatisfaction, social support, and fear of cancer recurrence, illustrating key areas for intervention.

Prevalence and factors associated with fear of recurrence in a mixed sample of young adults with cancer.

PURPOSE: This study examined the prevalence and factors associated with fear of cancer recurrence (FCR) in young adults (YAs). METHODS: YAs diagnosed with cancer between the ages of 15 and 39 in Canada (n = 461), who were currently 19 years or older, completed the Young Adults with Cancer in their Prime (YACPRIME) Study. The Fear of Cancer Recurrence Inventory Short Form (FCRI-SF) was the primary outcome. Scores ≥ 16 on the FCRI-SF indicate problematic levels and scores ≥ 22 represent clinically significant FCR. Covariates included demographic, clinical cancer variables, and co-morbid symptom measures. Univariate and multivariate logistic regression analyses were performed to identify variables associated with FCR. RESULTS: Participants were predominantly female (87%) with a mean age of 32 years (SD = 4.7). Problematic levels of FCR were present in 84% of YAs, and 59% met or exceeded the cutoff for clinically significant FCR. In the multivariate model, time since diagnosis of 5+ years was associated with a reduced likelihood of clinical FCR (Adjusted Odds Ratio [AOR] = 0.354; p = .004), while having a previous recurrence was related to increased likelihood (AOR = 3.468, p = .001). Other factors associated with clinical FCR in YAs were psychological distress (Mild: AOR = 2.947, p = .003; Moderate: AOR = 5.632, p < .0005; Severe: AOR = 8.877, p < .0005), and cancer-related body image dissatisfaction (AOR = 2.311, p = .004). CONCLUSIONS: FCR is a pervasive problem for YAs diagnosed with cancer, with previous recurrence and psychological difficulties as factors associated with a higher degree of fear. IMPLICATIONS: Psychosocial interventions for YAs targeting depression and anxiety should also prioritize the treatment of FCR.