1.Prevalence of Metabolic Syndrome in Rural Populace: A Study of Its Association With Adipocytokines
Hiroyuki OHBAYASHI ; Hirohiko YAMASE ; Shiro KAWASHIMA ; Koutarou HAYASHI ; Hiroyuki NOSAKA ; Takashi HIRAISHI
Journal of the Japanese Association of Rural Medicine 2006;55(5):449-458
The purpose of this study was to shed light on the prevalence of the metabolic syndrome (MetS) in a rural community and examine whether or not serum adipocytokine levels are associated with the Diagnostic Criteria for MetS and how many MetS components laid down in the standards subjects have. The subjects were 2,858 people (1,744men and 1,114 women, mean age 49.8+/-9.9 yrs) who had participated in our health screening program between April and December, 2005. After obtaining informed consent from them, we measured serum leptin, adiponectin and high-sensitivity C-reactive protein levels, while performing routine blood tests. In the present study, these measurements were used in combination with the number of MetS components applicable to the conditions of our subjects. Two hundred men (11.5%) and 25 women (2.2%) were diagnosed with MetS. The number of MetS women was extremely small. Those women who were above the standard waist circumference of above 90cm accounted for 8.7% of the total. Thus, most women subjects were excluded as MetS candidates here. The leptin levels of the MetS group were higher than those of the non-MetS group in accordance with the number of applicable components in the diagnostic standards for MetS. Especially, the MetS group which met three MetS criteria showed significantly high leptin levels (p/5=0.0081) of 5.26+/-1.86 (ng/ml) compared to 3.31+/-1.44 (ng/ml) of the non-MetS group with waist circumference below 85cm. On the other hand, no significant difference was noted between the groups in adiponectin level. However, in contrast to leptin levels, adiponectin levels were lower in the group having three MetS components than the non-MetS group 4.37+/-1.57 (ng/ml) as against 5.52+/-3.34 (ng/ml). High-sensitivity CRP levels did not show any significant difference between the two groups.As regards the cutoff value of women's waist circumference, further study needs to be done. It was suggested that serum leptin levels might be closely related to the diagnostic criteria for MetS and the number of MetS components applicable.
Human Females
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Leptin
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ng/mL
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seconds
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adiponectin
2.A Survey of Physicians' Understanding of the Regulatory Systems for Clinical Trials in Japan
Yukie Yamauchi ; Yumie Kawashima ; Hisashi Urushihara ; Fumiyo Uosaki ; Yasutoshi Kobayashi ; Shiro Hinotsu ; Masao Nakagawa ; Koji Kawakami
General Medicine 2013;14(2):92-103
Background: Re-revision of the Ethical Guidelines for Clinical Study (EGCS) in Japan is planned in 2013. It is important to ascertain the current situation of physicians' understanding to conduct clinical trials. It seems that the difference in regulatory processes between commercial and non-commercial clinical trials has caused significant confusion for physicians in conducting clinical trials in Japan.
This survey was undertaken in order to improve awareness of the differences between both types of clinical trials. Furthermore, this survey examined whether it was effective to promote about clinical trials under newly introduced regulatory guidelines and to examine the subsequent willingness of physicians to conduct such clinical trials.
Methods: From 24th March to 24th April 2009 inclusive, a questionnaire survey was conducted targeting 286 physicians working at Shiga University of Medical Science Hospital. A follow-up survey was conducted among 109 participants at a lecture about clinical trials on 8th July 2009.
Results: Physicians who had prior knowledge of the regulations, purposes, or support systems for commercial and non-commercial clinical trials responded positively that they were more likely to conduct clinical trials, while physicians who had no prior knowledge of them responded negatively. Both groups reported that their daily working pressures and cumbersome regulatory processes prevented them from conducting clinical trials.
Conclusion: Japanese physicians lack knowledge and information about clinical trials, leading to negative perceptions and reduced willingness to conduct such studies. Thus, the introduction of any strict and complex regulations should be approached carefully when the environment for clinical trials has not yet been established.
3.Predicted functional analysis of rumen microbiota suggested the underlying mechanisms of the postpartum subacute ruminal acidosis in Holstein cows
Yoshiyuki TSUCHIYA ; Ena CHIBA ; Atsushi KIMURA ; Kenji KAWASHIMA ; Toshiya HASUNUMA ; Shiro KUSHIBIKI ; Yo-Han KIM ; Shigeru SATO
Journal of Veterinary Science 2023;24(2):e27-
Background:
The relationships between the postpartum subacute ruminal acidosis (SARA) occurrence and predicted bacterial functions during the periparturient period are still not clear in Holstein cows.
Objectives:
The present study was performed to investigate the alterations of rumen fermentation, bacterial community structure, and predicted bacterial functional pathways in Holstein cows.
Methods:
Holstein cows were divided into the SARA (n = 6) or non-SARA (n = 4) groups, depending on whether they developed SARA during the first 2 weeks after parturition.Reticulo-ruminal pH was measured continuously during the study period. Reticulo-ruminal fluid samples were collected 3 weeks prepartum, and 2 and 6 weeks postpartum, and blood samples were collected 3 weeks before, 0, 2, 4 and 6 weeks postpartum.
Results:
The postpartum decline in 7-day mean reticulo-ruminal pH was more severe and longer-lasting in the SARA group compared with the non-SARA group. Changes in predicted functional pathways were identified in the SARA group. A significant upregulation of pathway “PWY-6383” associated with Mycobacteriaceae species was identified at 3 weeks after parturition in the SARA group. Significantly identified pathways involved in denitrification (DENITRIFICATION-PWY and PWY-7084), detoxification of reactive oxygen and nitrogen species (PWY1G-0), and starch degradation (PWY-622) in the SARA group were downregulated.
Conclusions
The postpartum SARA occurrence is likely related to the predicted functions of rumen bacterial community rather than the alterations of rumen fermentation or fluid bacterial community structure. Therefore, our result suggests the underlying mechanisms, namely functional adaptation of bacterial community, causing postpartum SARA in Holstein cows during the periparturient period.