Loss of social independence in patients with neurofibromatosis type 2: a follow-up study using a national registry in Japan.

BACKGROUND: For patients with neurofibromatosis type 2 (NF2), maintaining an independent state of living is important. The present study aimed to examine the loss of social independence (i.e., a status that patients can work and go to school) and its contributing factors in patients with NF2 using data from a national registry in Japan. METHODS: This longitudinal study used a registry database containing information on patients with NF2 who had submitted initial claims to receive medical expense subsidies between 2004 and 2010. Patients with "employed," "studying," and "housekeeping" categories were classified as "socially independent." Patients who were socially independent at baseline were followed-up for up to nine years. The primary outcome of the present study was the loss of social independence during the follow-up period, which was defined as the change in status from being socially independent to socially dependent. First, we examined longitudinal associations between demographic variables and neurological symptoms at baseline and the loss of social independence. Second, we examined whether the occurrence of neurological symptoms is associated with a loss of social independence in patients. RESULTS: A total of 156 patients were included in the present study. During the follow-up period, 37 (23.7%) patients experienced a loss of social independence. In the first analysis, the multivariate logistic regression model showed that the loss of social independence was significantly more frequent among patients with spinal dysfunction than among patients without. In the second analysis, logistic regression analyses showed that neurological symptoms, including bilateral hearing loss, facial nerve palsy, cerebellar dysfunction, decreased facial sensation, speech dysfunction (dysphagia/dysarthria and aphasia), double vision, blindness, hemiparesis, and seizures, were significantly associated with loss of social independence. CONCLUSIONS: The occurrence of various neurological symptoms of NF2 can hinder social independence in the long term. Medical service providers need to observe patients while considering the risks, and provide appropriate support to address neurological symptoms that can restrict social independence, as this will lead to maintaining social engagement.

The process of behavioral change in individuals who are uninterested in health: a qualitative study based on professional health knowledge.

BACKGROUND: In Japan and elsewhere, there is major concern over individuals who are uninterested in health and reluctant to change their health behaviors. While previous studies have investigated cognitive and behavioral characteristics in this population, there is limited evidence on whether they recognize the significance of health, nor is it clear how to motivate necessary behavior changes. This study identified specific characteristics of positive psychological and behavioral change in individuals who were uninterested in health, then constructed a model for their behavior change process, as advised via professional health expertise in the Japanese context. METHODS: This qualitative survey study was conducted among 86 health professionals (public health nurses, registered dieticians, and city/prefectural employees). These participants reported their demographic characteristics (gender, age, job, and length of service) and entered free descriptions concerning perceived cognitive and behavior changes in individuals who were uninterested in health. Finally, we thematically analyzed the contents on psychological/behavioral change and constructed a thematic map. RESULTS: We obtained 409 relative descriptive codes and four main themes, including (1) Health awareness: Recognize the significance of health via personal experience and/or illness among family/friends; (2) Psychological readiness: Preparative psychological state toward health behavior; (3) Gateway behavior: Precursory behavior leading to health behavior; and (4) Health behavior: Traditional healthy lifestyle behavior, with 45 subthemes. We constructed the abovementioned thematic map according to the Transtheoretical Model. Herein, health awareness may catalyze changes in health behavior, while changes in both psychological readiness (e.g., new interest in health behaviors and attitude toward appearance) and gateway behaviors (e.g., new points of discussion and information gathering) may arise before changes in health behavior. CONCLUSIONS: This study clarified positive cognitive and behavior changes in individuals who were uninterested in health and elucidated their behavior change process. As behavior changes in such individuals tend to be rigid, they are often left behind by health care systems and programs. In this regard, we identified pertinent cognitive and behavioral characteristics during the behavior change process and constructed a relevant model. These findings should be useful in developing interventions that can motivate the desire for behavior change.

Single intratracheal administration of cross-linked water-soluble acrylic acid polymer causes acute alveolo-interstitial inflammation and the subsequent fibrotic formation possibly via the TGF-ß1 pathway in the lung of rats.

In a Japanese chemical factory, a lung disease like pneumoconiosis appeared at a high rate among workers handling cross-linked water-soluble acrylic acid polymer (CWAAP). To our knowledge, no such case was known in the world until very recently. The present study was designed to elucidate the effect of single intratracheal CWAAP instillation on the lung of rats. The CWAAP group had a significant increase in relative lung weight accompanied by a significant elevation in the number of total cells, total protein concentrations, and myeloperoxidase concentrations in bronchoalveolar lavage fluid when compared to the control group. The histopathological study revealed acute lung inflammation with the destruction of alveoli. The factors promoting fibrosis, macrophages, TGF-ß1, collagen and fibronectin vs. the factors suppressing fibrosis, matrix metalloproteinases were more powerfully driven in the CWAAP group, resultantly leading to fibrotic formation. In turn, we examined if acute lung inflammation and the subsequent fibrotic formation seen in the CWAAP group appeared in the other water-soluble polymer groups. Their histopathological findings were observed only in the polyacrylic acid sodium (PAAS), a monomer of CWAAP, group. The degree of inflammation and fibrogenesis was stronger in the CWAAP group than in the PAAS group. In conclusion, the present study demonstrated the induction of acute lung inflammation and the subsequent fibrotic formation by single intratracheal CWAAP instillation. The structural features of CWAAP that contains many carboxyl groups and cross-linked chains may be responsible for enhanced inflammation and fibrogenesis in the lung.

Social Independence of Patients with Neurofibromatosis Type 2 in Japan: Analysis of a National Registry of Patients Receiving Medical Expense Subsidies, 2004-2013.

Although it is important for patients with neurofibromatosis type 2 (NF2) to live independently and maintain good quality of life (QOL), no study has examined the social independence status in this patient population. This study aimed to examine the state of social independence and its contributing factors in patients with NF2 using data from a national registry in Japan during the past decade. A database provided by the Ministry of Health, Labour and Welfare of Japan that contained information about all patients with newly submitted claims for medical expense subsidies for NF2 in Japan between fiscal years 2004 and 2013 was analyzed. Individuals aged 6 to 64 years were deemed eligible for the present study. Categories of "employed," "studying," and "housekeeping" were classified as "socially independent." Multivariate logistic regression analysis was performed to examine associations between demographic variables, neurological features, and social independence status. Of 334 participants, 79% were socially independent at the time of registration. Socially dependent participants had more neurological features than those who were socially independent, whereas sex, age, and family history had no significant associations with social independence status. Multivariate logistic regression analysis revealed that participants with bilateral hearing loss, unilateral hearing loss, blindness, hemiplegia, or seizures had significantly higher odd ratios for being socially dependent compared to participants without these features. Our findings, which suggest that these neurological features could restrict social independence, could contribute to the maintenance of better social functioning and QOL in patients with NF2.

Longitudinal association between near-misses/minor injuries and moderate/severe injuries in industrial settings by presence/absence of depressive symptoms in a nationally representative sample of workers in Japan.

OBJECTIVES: The association between near-misses/minor injuries and moderate/severe injuries has yet to be investigated longitudinally. This study aimed to examine the longitudinal association between near-misses/minor injuries and moderate/severe injuries by the presence/absence of depressive symptoms using 1-year follow-up data obtained from a nationally representative sample of workers in Japan. METHODS: Of the 18 231 eligible participants at time 1 (T1), 12 127 who responded to the 1-year follow-up survey at time 2 (T2) (response rate: 66.5%; 4370 females and 7757 males; mean age (SD), 45.3 (10.5) years) were included in the analysis. Multivariate logistic regression analyses were performed with the presence/absence of moderate/severe injuries at T2 as the dependent variable. RESULTS: In total, 36.4% of participants reported depressive symptoms at T1. During the follow-up period, 1.6% of participants reported moderate/severe injuries in industrial settings. After adjusting for relevant variables, participants who reported near-misses (OR=1.7 (95% CI, 1.3 to 2.4)) and minor injuries (OR=2.5 (95% CI, 1.3 to 4.7)) at T1 were more likely to have moderate/severe injuries at T2 compared to those who reported no near-misses/minor injuries. However, this association was stronger in participants who did not have depressive symptoms at T1 than in those who had depressive symptoms. CONCLUSIONS: While the predictive value of near-misses/minor injuries for the occurrence of moderate/severe injuries by the presence/absence of depressive symptoms should be cautiously interpreted, our findings suggest that the development and utilisation of near-miss/minor injury reporting systems may help reduce the likelihood of moderate/severe injuries among workers, especially those without depressive symptoms.