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1.
Qual Life Res ; 31(7): 2143-2151, 2022 Jul.
Article in English | MEDLINE | ID: mdl-35020110

ABSTRACT

PURPOSE: We developed preference weights of the Adult Social Care Outcomes Toolkit for Carers (ASCOT-Carer) in Japan. METHODS: We used best-worst scaling (BWS) and composite time trade-off (cTTO) to determine the preference weights for ASCOT-Carer states in the general population. TTO values were applied to convert the BWS scores to utilities. The sample number was approximately 1000 for the BWS survey and 200 for the TTO survey. Whereas face-to-face surveys by computer-assisted interviewing were adopted for the TTO tasks, a web-based survey was used for the BWS tasks. In the BWS tasks, the ASCOT-Carer states were presented, and the "best," "worst," "second best," and "second worst" domains in a profile were selected. A mixed logit model was applied to the BWS data. RESULTS: The respondents' background was similar to that of the general population, although the number of people in the age and sex categories was equal. The preference weights for calculating the utilities of the ASCOT-Carer states were estimated. The estimated utilities of the ASCOT-Carer states were distributed between 1 and 0.02. All preference weights were consistent. The item with the highest preference weight was level 1 in the "space and time to be yourself." The least preferred item was level 4 in the "space and time to be yourself" and "control over daily life" domains. CONCLUSION: We established Japanese preference weights for ASCOT-Carer states, the first weights of an Asian country. The estimated utilities can contribute to the measurement of caregivers' social care-related QoL and perform of cost-effectiveness analyses.


Subject(s)
Caregivers , Quality of Life , Adult , Humans , Japan , Quality of Life/psychology , Social Support , Surveys and Questionnaires
2.
Qual Life Res ; 29(1): 253-263, 2020 Jan.
Article in English | MEDLINE | ID: mdl-31485915

ABSTRACT

PURPOSE: In developed countries, progressive rapid aging is increasing the need for social care. This study aimed to determine Japanese utility weights for the Adult Social Care Outcomes Toolkit (ASCOT) four-level self-completion questionnaire (SCT4). METHODS: We recruited 1050 Japanese respondents from the general population, stratified by sex and age, from five major cities. In the best-worst scaling (BWS) phase, respondents ranked various social care-related quality of life (SCRQoL) states as "best," "worst," "second-best," or "second-worst," as per the ASCOT. Then, respondents were asked to evaluate eight different SCRQOL states by composite time-trade off (cTTO). A mixed logit model was used to analyze BWS data. The association between cTTO and latent BWS scores was used to estimate a scoring formula that would convert BWS scores to SC-QALY (social care quality-adjusted life year) scores. RESULTS: Japanese BWS weightings for ASCOT-SCT4 were successfully estimated and found generally consistent with the UK utility weights. However, coefficients on level 3 of "Control over daily life" and "Occupation" domains differed markedly between Japan and the UK. The worst Japanese SCRQoL state was lower than that for the UK, as Japanese cTTO results showed more negative valuations. In general, Japanese SC-QALY score (for more than 90% of health states) was lower than that for the UK. CONCLUSIONS: We successfully obtained Japanese utility weights for ASCOT SCT4. This will contribute to the measurement and understanding of social care outcomes.


Subject(s)
Quality of Life/psychology , Adult , Aged , Female , Humans , Japan , Male , Middle Aged , Surveys and Questionnaires , Treatment Outcome , Young Adult
3.
Health Qual Life Outcomes ; 17(1): 59, 2019 Apr 11.
Article in English | MEDLINE | ID: mdl-30975154

ABSTRACT

BACKGROUND: The aim of this study was to develop and perform cross-cultural validation of a Japanese version of the Adult Social Care Outcomes Toolkit (ASCOT) four-level Self-Completion questionnaire (SCT4) instrument to measure Social-Care Related Quality of Life. It was important to develop a Japanese version of the ASCOT-SCT4 and validate it in the Japanese context, given the interest in measuring outcomes of social care services in Japan. METHODS: The original version of ASCOT-SCT4 was translated into Japanese following good practice guidelines. Additionally, comments and feedback were obtained from an independent committee engaged in managing and providing social care services to refine the flow of sentences of the newly developed translated version. The resulting version was tested for cross-cultural validation among community-dwelling adults who use social care services to confirm the factorial structure and the scale system of the Japanese version, using Structural Equation Modeling and Item Response Theory. RESULTS: Vigorous discussion was needed to translate the original version into Japanese especially for the items control over daily life and dignity. These two items were linguistically difficult to express in everyday language so potential participants could easily understand the intended concepts. In the cross-cultural validation, we obtained values for model fit within the acceptable range: between 0.706 and 0.550 for factor loadings, 0.923 for the Comparative Fit Index, 0.910 for the Tucker-Lewis Index, and 0.083 for the Root Mean Square Error of Approximation. This confirmed the factorial structure of the Japanese version. The IRT analysis, however, revealed that the scale system needed refinement to facilitate appropriate differentiation between each response option. CONCLUSIONS: This study provided preliminary evidence that the Japanese version of ASCOT-SCT4 is valid. As a result, the Japanese version was finalized and approved by the instrument developer.


Subject(s)
Patient Reported Outcome Measures , Quality of Life , Activities of Daily Living , Adult , Aged , Cross-Cultural Comparison , Female , Humans , Independent Living/statistics & numerical data , Japan , Male , Middle Aged , Reproducibility of Results , Social Work , Translations
4.
PLoS One ; 13(8): e0203112, 2018.
Article in English | MEDLINE | ID: mdl-30157253

ABSTRACT

OBJECTIVE: Home independence is an important issue for the elderly in many countries and cultures. The aim of this study was to examine the effect of short-stay service use on stay-at-home duration for elderly people by level of care need under the Japanese long-term care insurance system. METHODS: We analyzed anonymous, Ministry of Health, Labour and Welfare of Japan Long-Term Care Insurance claims data from Ibaraki Prefecture. All participants were certified as eligible for long-term care insurance and had moved into a facility under long-term care insurance after certification between April 2006 and March 2012. Data was analyzed for 2,454 participants aged 65 years or older who entered residential care at least 1 month after initial use of care services. The participants were divided into 2 groups (low- and high-care need), depending on their required level of care. Cox proportional hazard modeling was used to calculate the adjusted hazard ratio (HR) of residential care admission after initial use of care services. RESULTS: Use of short-stay services was positively correlated to delay of residential care admission compared to non-use in the low-care need group (HR; 0.834, 95% confidence interval (CI); 0.740-0.939). In the high-care need group, however, use of short-stay services was somewhat correlated with earlier admission (HR; 1.254, 95% CI; 1.084-1.451). CONCLUSIONS: The results of this study show that appropriate timing short-stay service use is necessary for the elderly to stay at home longer.


Subject(s)
Ambulatory Care , Health Services for the Aged , Home Care Services , Aged , Aged, 80 and over , Female , Health Services Needs and Demand , Homes for the Aged , Humans , Insurance, Long-Term Care , Japan , Male , Rehabilitation , Time Factors
5.
World Med Health Policy ; 10(1): 83-98, 2018 Mar.
Article in English | MEDLINE | ID: mdl-29610701

ABSTRACT

This study aimed to examine multiple factors associated with happiness from the perspective of gender difference among a middle-aged Japanese population. A total of 865 participants (male = 344, female = 521) aged 40-64 years were divided into two groups (high and low) by their self-reported level of happiness. Logistic regression analysis by gender was carried out. In men, high levels of happiness were significantly correlated with living with spouse, occupation, enough sleep, leading a normal life, and regular checkups; while low levels of happiness were significantly correlated with smoking and having two or more diseases. In women, low levels of happiness were significantly correlated with caring for a family member. Our data suggested that the factors relevant to happiness levels might vary between men and women among middle-aged people in Japan. To increase the nation's level of happiness, the Japanese government must implement extended social services and policymaking, to alleviate caregivers' burdens, especially among Japanese women.

6.
Geriatr Gerontol Int ; 18(1): 26-32, 2018 Jan.
Article in English | MEDLINE | ID: mdl-28776904

ABSTRACT

AIM: The public mandatory long-term care insurance system in Japan has supposedly mitigated the care burden for family caregivers of older adults, whereas family caregivers still play a considerable role in providing care. The effect of informal caregiving on the caregiver's health has been of great interest. We investigated the relationship between the amplitude of informal caregiving and caregiver participation in health check-ups in Japan. METHODS: The present study was a cross-sectional analysis of nationally representative data in Japan (2010 Comprehensive Survey of Living Conditions). We investigated the relationship between care recipients' care-need level and in-home caregiver participation in health check-ups during the last year of the survey for caregivers. RESULTS: A total of 3354 caregiver/recipient pairs were included in the study. Crude proportions of caregivers completing a health check-up by care-need level were 68.4% (support required 1 and 2), 63.5% (care required 1-3) and 60.3% (care required 4 and 5). Higher care-need level was negatively associated with caregiver participation in health check-ups (support required 1 and 2as reference, care required 1-3: odds ratio 0.82, 95% confidence interval 0.75-0.90), care required 4 and 5: odds ratio 0.76, 95% confidence interval 0.74-0.79) after adjustment for possible confounders. Inclusion of the caregiver time devoted to care per day and caregiver self-rating of health as independent variables did not change the result. CONCLUSIONS: These results suggest that facilitating health check-up participation for family caregivers of care recipients with higher care-need levels might be an effective intervention for decreasing the gap in health behavior possibly caused by informal caregiving. Geriatr Gerontol Int 2018; 18: 26-32.


Subject(s)
Caregivers/psychology , Health Services Needs and Demand/statistics & numerical data , Physical Examination , Cross-Sectional Studies , Humans , Japan , Surveys and Questionnaires
7.
J Neurol Sci ; 380: 27-30, 2017 Sep 15.
Article in English | MEDLINE | ID: mdl-28870583

ABSTRACT

Acute infectious encephalopathy is often observed in children in East Asia including Japan. More than 40% of the patients remain unclassified into specific syndromes. To investigate the underlying pathomechanisms in those with unclassified encephalopathy, we evaluated brain metabolism by MR spectroscopy. Among seven patients with acute encephalopathy admitted to our hospital from June 2016 to May 2017, three were classified into acute encephalopathy with biphasic seizures and late reduced diffusion (AESD). The other four showed consciousness disturbance lasting more than three days with no parenchymal lesion visible on MRI, which led to a diagnosis of unclassified encephalopathy. MR spectroscopy in these four patients, however, revealed an increase of glutamine with a normal N-acetyl aspartate level on days 5 to 8, which had normalized by follow-up studies on days 11 to 16. The four patients clinically recovered completely. Among 27 patients with encephalopathy, including the present seven patients, admitted to our hospital from January 2015 to March 2017, seven (26%) were classified into this type, which we propose is a new encephalopathy syndrome, clinically mild encephalopathy associated with excitotoxicity (MEEX). MEEX is the second most common subtype, following AESD (30%). This study suggests that excitotoxicity may be a common underlying pathomechanism of acute infectious encephalopathy, and prompt astrocytic neuroprotection from excitotoxicity may prevent progression of MEEX into AESD.


Subject(s)
Brain Diseases/diagnostic imaging , Brain Diseases/metabolism , Brain/diagnostic imaging , Brain/metabolism , Brain Diseases/therapy , Child, Preschool , Consciousness Disorders/diagnostic imaging , Consciousness Disorders/metabolism , Consciousness Disorders/therapy , Diffusion Magnetic Resonance Imaging , Follow-Up Studies , Glutamic Acid/metabolism , Glutamine/metabolism , Humans , Infant , Magnetic Resonance Spectroscopy , Male , Retrospective Studies , Syndrome
8.
J Neurol Sci ; 373: 138-141, 2017 Feb 15.
Article in English | MEDLINE | ID: mdl-28131171

ABSTRACT

Acute infectious encephalopathy is very frequently observed in children in East Asia including Japan. Acute encephalopathy with biphasic seizures and late reduced diffusion (AESD) is the most common subtype in Japan; however, more than 40% of the patients remain unclassified into specific syndromes. To investigate the underlying pathomechanism in those with unclassified acute encephalopathy, we evaluated brain metabolism by MR spectroscopy. Among 20 patients with acute encephalopathy admitted to our hospital during January 2015 to May 2016, 12 could not be classified into specific syndromes. MR spectroscopy was performed in 8 of these 12 patients with unclassified encephalopathy. MR spectroscopy showed an increase of glutamine with a normal N-acetyl aspartate level on days 3 to 8 in three of the 8 patients, which had normalized by follow-up studies. The three patients clinically recovered completely. This study suggests that excitotoxicity may be the underlying pathomechanism in some patients with unclassified mild encephalopathy.


Subject(s)
Brain Diseases/diagnostic imaging , Brain Diseases/metabolism , Brain/diagnostic imaging , Brain/metabolism , Magnetic Resonance Spectroscopy , Brain Diseases/drug therapy , Consciousness Disorders/diagnostic imaging , Consciousness Disorders/drug therapy , Consciousness Disorders/metabolism , Encephalitis, Viral/diagnostic imaging , Encephalitis, Viral/drug therapy , Encephalitis, Viral/metabolism , Female , Follow-Up Studies , Glutamic Acid/metabolism , Glutamine/metabolism , Humans , Infant , Japan , Magnetic Resonance Imaging , Male , Retrospective Studies , Roseolovirus Infections/diagnostic imaging , Roseolovirus Infections/drug therapy , Roseolovirus Infections/metabolism
9.
PLoS One ; 10(12): e0145200, 2015.
Article in English | MEDLINE | ID: mdl-26692344

ABSTRACT

The number of children with disability is increasing gradually in Japan. Previous researches in other countries have reported that parents as caregivers (CGs) of children with disability have mental health problems, but the actual situation has not been examined nationwide in Japan so far. The aim of this study was to evaluate the association between mental health of CGs who had children with disability and characteristics of children, CGs, and household based on the nation-wide survey. This study utilized data from 2010 Comprehensive Survey of the Living Conditions, and defined children with disability aged 6 to 17. Individual data of children and CGs were linked, and 549 pairs of them were extracted. The Japanese version of Kessler 6 (K6) was used to assess mental health status of caregiver, scored 5 and over represented to general psychological distress. Logistic regression was used to evaluate the associations of interest. The almost half (44.4%) of CGs had psychological distress (k6 score; 5 +) in nationwide, and 8.9% of CGs might have serious mental illness (K6 score; 13 +). After adjusting covariates of child, CG, and household factors, CG having a current symptom (OR, 95% CI: 3.26, 1.97-5.39), CG's activity restriction (OR, 95% CI: 2.95, 1.38-6.32), low social support (OR, 95%CI: 9.31, 1.85-46.8), three generation family (OR, 95% CI: 0.49, 0.26-0.92), and lower 25% tile group of monthly household expenditure (OR, 95% CI:1.92, 1.05-3.54), were significantly associated with psychological distress of CGs. This study encourages health care providers to pay more attentions toward parent's mental health, especially for in case of having low social support, and lower income family. Further research should examine the detailed information of child's disease and disability, medical service use, and quality and quantity of social support in nationwide to straighten the system for supporting services of both children with disabilities and their CGs.


Subject(s)
Caregivers , Disabled Children , Mental Health , Parents , Adolescent , Asian People , Child , Female , Humans , Japan , Male
10.
PLoS One ; 10(2): e0116648, 2015.
Article in English | MEDLINE | ID: mdl-25651532

ABSTRACT

OBJECTIVE: To examine the consequences of early-onset hearing loss on several social and health measures and any related gender differences in Japanese populations. METHODS: Data from a 2007 nationally representative cross-sectional household survey of 136,849 men and women aged 20 to 39 years were obtained (prevalence of self-reported hearing loss: 0.74%). We focused particularly on four social and health measures: employment status (employed/unemployed), marital status (married/unmarried), smoking behavior (yes/no), and psychological distress (K6 instrument: ≥ 5 or not). We examined the association of hearing loss for each measure using generalized estimating equations to account for correlated individuals within households. FINDINGS: There was no significant association with employment status (p = 0.447). Men with hearing loss were more likely to be married, whereas women with hearing loss were less likely to be married (p < 0.001 for interaction). Although hearing loss was not associated with a current smoking status in men, women with hearing loss were more likely to be current smokers (p < 0.001 for interaction). Moreover, hearing loss was associated with psychological distress in men and women (both p < 0.001). CONCLUSION: These findings suggest that hearing loss is related to social and health issues in daily life, including a lower likelihood of marriage, more frequent smoking, and poorer mental health, especially in women. These issues may reflect a gap between the actual needs of women with hearing loss and the formal support received as a result of existing public health policies in Japan.


Subject(s)
Hearing Loss/epidemiology , Hearing Loss/psychology , Marital Status/statistics & numerical data , Mental Health , Smoking , Adult , Cross-Sectional Studies , Employment/psychology , Employment/statistics & numerical data , Female , Hearing Loss/complications , Humans , Japan/epidemiology , Male , Sex Distribution , Smoking/psychology , Stress, Psychological/complications , Young Adult
11.
Geriatr Gerontol Int ; 14(2): 301-8, 2014 Apr.
Article in English | MEDLINE | ID: mdl-23773284

ABSTRACT

AIM: To clarify the performance situation of selected quality indicators: falls, pressure ulcers and dehydration, at health care facilities for the elderly in Japan, and what structural characteristics are related to them. METHODS: The operational population consisted of 1057 institutionalized users (approximately 10 randomly selected per facility) from a survey answered by the care staff. The facilities were divided into two groups according to their prevalence of negative outcomes (falls, pressure ulcers, dehydration): the best 25% (the very good performers) and the remaining 75% (not so good performers). Logistic regression analysis was carried out to examine the relationship between the structure characteristics of the facilities and their performance regarding each quality indicator. RESULTS: After controlling for sex, years of operation and average age of the users, our results showed a beneficial significant relationship between falls and the total number of nurses per 100 users with an adjusted odds ratio (AOR) of 0.77 (95% CI 0.59-0.98); In contrast, for pressure ulcers, harmful associations between a higher number of registered nurses (AOR 1.23, 95% CI 1.01-1.05) and the availability of 24-h nurse staffing (AOR 4.95, 95% CI 1.19-24.91) were found; regarding dehydration, we did not find any related staffing characteristics. CONCLUSION: Nursing staff might be considered as a potentially related variable in the quality of care in health care facilities for the elderly. The present study is the first to show a relationship between structural characteristics and quality outcomes in health care facilities for the elderly.


Subject(s)
Health Facilities/standards , Long-Term Care/standards , Patient Outcome Assessment , Quality Indicators, Health Care , Aged , Aged, 80 and over , Cross-Sectional Studies , Female , Health Care Surveys , Humans , Japan , Male
12.
Nihon Koshu Eisei Zasshi ; 60(9): 586-95, 2013 Sep.
Article in Japanese | MEDLINE | ID: mdl-24125818

ABSTRACT

OBJECTIVES: With the aging of the population, Japan's long-term care system has shifted from a welfare-placement system to a social-insurance system, which is a precedent of policies for the elderly. We examined how individuals who used care services before the implementation of long-term care insurance (LTCI) (previous service users) currently use the LTCI services, with a focus on the processes of service use. METHODS: Panel data were obtained from the Nihon University Japanese Longitudinal Study of Aging database. These data were collected by interviews conducted before (November 1999 and March 2000) and after (November 2001 and December 2001) the establishment of LTCI. Among the 3992 individuals who participated in these interviews, 416 of the previous service users, aged ≥65 years, were sampled. The outcome measures were the processes of using LTCI services (application for LTCI, certification of long-term care need, and contract with LTCI service providers). Logistic regression analysis was performed to identify individual factors associated with the process of application for LTCI. RESULTS: There were 133 LTCI users among the 416 previous service users (32.0%). Of the service processes used, 45.5% of previous service users were applicants, 85.7% of the applicants were certified individuals, and 88.7% of those certified used services with service contracts. The application process was significantly easier for individuals with disease (odds ratio[OR], 8.34 : 95% confidence interval [CI], 1.86-37.46), those dependent for their instrumental activities of daily living (IADL) (OR, 11.21 : 95% CI, 5.22-24.07), those with an equivalent income of <1.25 million yen (OR, 2.72 : 95% CI, 1.30-5.69), and those who had used respite care (OR, 3.29 : 95% CI, 1.16-9.35) previously. In contrast, the application process was significantly difficult for community rehabilitation users (OR, 0.38 : 95% CI, 0.17-0.82). CONCLUSION: Only half of the previous service users were applicants, and they had severe diseases or were more dependent for their IADL. Our findings suggest that many individuals who were functionally independent were covered under the welfare-placement system. Additionally, low-income individuals did not refrain from applying.


Subject(s)
Home Care Services/statistics & numerical data , Insurance, Long-Term Care/statistics & numerical data , Aged , Female , Health Services Needs and Demand/statistics & numerical data , Humans , Japan , Male
13.
Sangyo Eiseigaku Zasshi ; 54(1): 22-8, 2012.
Article in Japanese | MEDLINE | ID: mdl-22095205

ABSTRACT

OBJECTIVES: We conducted a comparative analysis of lifestyle, mental stress, and medical check-up results between tanshin-funin workers and workers living with their families. METHODS: Study participants were 3,026 married men, aged 40-59 yr, who worked at a large financial firm in Japan. Tanshin-funin was defined as married men separated from their families due to workplace assignments, as determined by a self-administered questionnaire in 2004. Participants' lifestyle factors, including exercise, alcohol and smoking consumption, and dietary habits, and mental stress, including lack of vigor, irritability, fatigue, anxiety, depressed mood, and physical complaints, were examined using a self-administered questionnaire. Medical check-ups conducted in 2004 included measurements of BMI, SBP, DBP, FBS, GOT, GPT, γ-GTP, TC, TG, HDL, RBC, and WBC. RESULTS: An analysis of lifestyle factors, using the χ(2) test, indicated that fewer tanshin-funin workers exercise, and that they had fewer regularly-scheduled meals. Tanshin-funin workers smoked more and consumed more alcohol, but ate fewer green and yellow vegetables. Tanshin-funin workers had fewer commuting hours and took fewer days off. Tanshin-funin workers also suffered more frequently from irritability and anxiety. A regression analysis, adjusted for age and smoking status, indicated that levels of TC, TG, and WBC for tanshin-funin workers were higher than workers living with their families. CONCLUSIONS: The lifestyle habits of tanshin-funin workers, such as dietary habits, were worse than those of workers living with their families, and tanshin-funin workers suffered from more irritability and anxiety. Clinical markers, such as dyslipidemia, were worse among tanshin-funin workers than among workers living with their families.


Subject(s)
Family/psychology , Life Style , Mental Health , Occupational Health , Physical Examination/statistics & numerical data , Stress, Psychological/epidemiology , Stress, Psychological/psychology , Workplace/psychology , Adult , Humans , Japan/epidemiology , Male , Middle Aged , Surveys and Questionnaires
14.
Microbiol Immunol ; 55(5): 341-6, 2011 May.
Article in English | MEDLINE | ID: mdl-21323726

ABSTRACT

A novel influenza A (2009 H1N1) virus has led to a worldwide pandemic. A significant number of patients with pneumonia have been reported, although its pathogenesis remains to be elucidated. To determine its pathogenesis, we evaluated serum interleukin (IL)-5 and peripheral eosinophil counts in patients with acute pneumonia caused by the 2009 H1N1 virus. During the period from October to December 2009, 40 patients with laboratory-confirmed 2009 H1N1 pneumonia were under investigation. Their mean age at presentation was 6.8 years. The most characteristic finding was the early development of hypoxemic respiratory distress in the first 24 hr after the onset of fever. Bronchial mucous plugs included eosinophils in addition to neutrophils, even in patients without allergies. Serum IL-5 levels were elevated in 20 out of 24 patients (83%) whose samples were obtained in the first 24 hr after the onset of fever (26.5 ± 20.1 pg/mL), independent of the presence of underlying allergies. In contrast, induction of IL-5 was not documented in sera from eight patients with laboratory-confirmed 2009 H1N1 virus who developed neurological complications, but without lower respiratory infection (2.1 ± 0.7 pg/mL, P < 0.001 vs acute pneumonia). Peripheral eosinophilia was characteristic in acute pneumonia, but not in patients without a lower respiratory infection. There was a marked difference in the induction of IL-5 in 2009 H1N1 patients who developed acute pneumonia, compared with those without a lower respiratory infection. IL-5 may play a role in the early phase of acute pneumonia caused by the 2009 H1N1 virus in Japanese children.


Subject(s)
Eosinophilia/complications , Influenza A Virus, H1N1 Subtype/pathogenicity , Influenza, Human/complications , Interleukin-5/blood , Pandemics , Pneumonia, Viral/virology , Acute Disease , Child , Child, Preschool , Humans , Influenza, Human/epidemiology , Influenza, Human/virology , Pneumonia, Viral/epidemiology , Pneumonia, Viral/immunology , Tokyo/epidemiology
15.
Eur J Pediatr ; 169(9): 1087-92, 2010 Sep.
Article in English | MEDLINE | ID: mdl-20383526

ABSTRACT

BACKGROUND AND OBJECTIVE: Clinical characteristics of human bocavirus (HBoV) infection have been studied worldwide, but their importance of those characteristics remains unknown. We investigated distinctive clinical features of HBoV-positive children with lower respiratory tract infection (LRTI). METHODS AND RESULTS: During April 2007-July 2009, for 402 hospitalized children younger than 2 years with LRTI, we prospectively examined virus genomes in nasopharyngeal swabs for HBoV, respiratory syncytial virus (RSV), rhinovirus, metapneumovirus, parainfluenzavirus, and adenovirus. The HBoV genomes were identified in 34 patients (8.5%). Clinical and laboratory data of HBoV-positive and other virus/bacteria-negative patients (n = 18) were analyzed and compared with data of RSV-single positive patients (n = 99). The seasonal distribution of HBoV exhibits a concentration of cases during March-September, with most RSV cases occurring during winter in Japan. The minimum age of HBoV-positive patients was 5 months, although 44 patients (44%) with RSV were younger than 6 months. The main clinical features were respiratory distress and hypoxia. Hypoxia advances within 3 days after onset. The mean oxygen saturation on arrival was 92.8%, which was significantly lower than that in patients with RSV (p < 0.001). White blood cell counts were similar among groups. However, the percentage of neutrophils in white blood cells were significantly higher in HBoV-positive patients (62 vs. 45%, p < 0.001). Their prognoses were good. Their hospital stays were 6.6 days. CONCLUSIONS: HBoV-single positive patients show several clinical characteristics, such as seasonality, age, hypoxia, and neutrophilia, which differ from those with RSV infection.


Subject(s)
Human bocavirus/isolation & purification , Hypoxia/virology , Neutropenia/virology , Parvoviridae Infections/diagnosis , Respiratory Syncytial Virus Infections/diagnosis , Respiratory Tract Infections/diagnosis , Respiratory Tract Infections/virology , Age Factors , Dyspnea/virology , Female , Hospitalization/statistics & numerical data , Humans , Infant , Inpatients , Japan/epidemiology , Male , Oxygen/metabolism , Parvoviridae Infections/epidemiology , Parvoviridae Infections/virology , Prognosis , Prospective Studies , Respiratory Syncytial Virus Infections/epidemiology , Respiratory Syncytial Viruses/isolation & purification , Respiratory Tract Infections/epidemiology , Seasons , Time Factors
16.
Chemosphere ; 57(5): 365-72, 2004 Nov.
Article in English | MEDLINE | ID: mdl-15331263

ABSTRACT

Fe(3+)-H(2)O(2) mixed reagent, but not Fe(2+)-H(2)O(2), was found to be capable of degrading 2,7-dichlorodibenzo-p-dioxin (DCDD). A reaction mixture of FeCl(3) (8 mM) and H(2)O(2) (1%) caused approximately 50% degradation within 6 h and >90% degradation within 24 h at 27 degrees C. Increasing the temperature remarkably stimulated degradation: at 70 degrees C, approximately 100% degradation was achieved within 15 min. When DCDD-treated model soil (5 micrograms/g) was conducted, approximately 100% of the DCDD was degraded within 30 min at 70 degrees C (both reagents were added every 10 min). These results suggest that Fe(3+)-H(2)O(2) mixed reagent may be a new tool for combating persistent environmental pollutants such as dioxins and polychlorinated biphenyls.


Subject(s)
Dioxins/chemistry , Ferric Compounds/chemistry , Hydrogen Peroxide/chemistry , Chlorides/analysis , Chromatography, Gas , Gas Chromatography-Mass Spectrometry , Temperature , Time Factors
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