- 著者
- Yoko Takayama Toshiaki Komatsu Tatsuhiko Wada Shin Nihonyanagi Takayuki Hoshiyama Tatsumi Moriya Shizue Shimamura Naoko Kajigaya Masanori Naito Osamu Takeuchi Yuki Bando Masahiko Watanabe Masatsugu Iwamura Hideaki Hanaki
- 出版者
- The Medical Association of Nippon Medical School
- 雑誌
- Journal of Nippon Medical School (ISSN:13454676)
- 巻号頁・発行日
- vol.89, no.5, pp.513-519, 2022-10-25 (Released:2022-11-09)
- 参考文献数
- 33
Background: Antibody testing is essential for accurately estimating the number of people infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). This study aimed to investigate the influence of background factors on seroprevalence by testing for anti-SARS-CoV-2 antibodies in blood samples obtained from the staff of three hospitals. Methods: This cross-sectional observational study was conducted from June 8 to July 4, 2020, as part of a mandatory health examination. Leftover blood samples collected during the health examinations at each hospital were used to test for the presence of anti-SARS-CoV-2 antibodies. The Elecsys Anti-SARS-CoV-2 RUO assay was used for antibody detection. The relationship between staff age, gender, body mass index, blood pressure, work environments with different exposure risks, place of residence, and campus location and seroprevalence was investigated. The data were anonymized prior to analysis. Results: A total of 3,677 individuals were included in the study, comprising 2,554 females (69.5%) and 1,123 males (30.5%). Anti-SARS-CoV-2 antibody (immunoglobulin G) was detected in 13 participants (0.35%). Seroprevalence was slightly higher in males than females (0.62% vs. 0.23%, P=0.08). By occupation, anti-SARS-CoV-2 antibodies were found in 6 (0.75%) physicians, 6 (0.31%) nurses, and one individual (0.11%) in the medical personnel group, with slightly higher levels in physicians. No significant difference was noted in the seroprevalence in terms of all background factors. Conclusions: Our study shows that the background factors do not impact seropositivity rates. Thorough daily infection control and adherence to recommended health guidelines were found to reduce infection risk.
- 著者
- Mitsuru Yagi Nobuyuki Fujita Tomohiko Hasegawa Gen Inoue Yoshihisa Kotani Seiji Ohtori Sumihisa Orita Yasushi Oshima Daisuke Sakai Toshinori Sakai Hiroshi Taneichi Daisuke Togawa Kazuo Nakanishi Hiroaki Nakashima Toshitaka Yoshii Masaya Nakamura Motoki Iwasaki Masahiko Watanabe Hirotaka Haro Tokumi Kanemura Naobumi Hosogane New Technology Assessment Committee of The Japanese Society for Spine Surgery and Related Research
- 出版者
- The Japanese Society for Spine Surgery and Related Research
- 雑誌
- Spine Surgery and Related Research (ISSN:2432261X)
- 巻号頁・発行日
- pp.2022-0194, (Released:2022-12-12)
- 被引用文献数
- 1
IntroductionLateral lumbar interbody fusion (LLIF) has been introduced in Japan in 2013. Despite the effectiveness of this procedure, several considerable complications have been reported. This study reported the results of a nationwide survey performed by the Japanese Society for Spine Surgery and Related Research (JSSR) on the complications associated with LLIF performed in Japan.MethodsJSSR members conducted a web-based survey following LLIF between 2015 and 2020. Any complications meeting the following criteria were included: (1) major vessel, (2) urinary tract, (3) renal, (4) visceral organ, (5) lung, (6) vertebral, (7) nerve, and (8) anterior longitudinal ligament injury; (9) weakness of psoas; (10) motor and (11) sensory deficit; (12) surgical site infection; and (13) other complications. The complications were analyzed in all LLIF patients, and the differences in incidence and type of complications between the transpsoas (TP) and prepsoas (PP) approaches were compared.ResultsAmong the 13,245 LLIF patients (TP 6,198 patients [47%] and PP 7,047 patients [53%]), 389 complications occurred in 366 (2.76%) patients. The most common complication was sensory deficit (0.5%), followed by motor deficit (0.43%) and weakness of psoas muscle (0.22%). Among the patient cohort, 100 patients (0.74%) required revision surgery during the survey period. Almost half of the complications developed in patients with spinal deformity (183 patients [47.0%]). Four patients (0.03%) died from complications. Statistically more frequent complications occurred in the TP approach than in the PP approach (TP vs. PP, 220 patients [3.55%] vs. 169 patients [2.40%]; p < 0.001).ConclusionsThe overall complication rate was 2.76%, and 0.74% of the patients required revision surgery because of complications. Four patients died from complications. LLIF may be beneficial for degenerative lumbar conditions with acceptable complications; however, the indication for spinal deformity should be carefully determined by the experience of the surgeon and the extent of the deformity.
- 著者
- Masahiko Watanabe Yoshio Hirai
- 出版者
- JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY
- 雑誌
- Applied Entomology and Zoology (ISSN:00036862)
- 巻号頁・発行日
- vol.39, no.2, pp.249-254, 2004 (Released:2004-08-25)
- 参考文献数
- 14
- 被引用文献数
- 12 22
Host-use pattern for overwintering and reproduction of the ragweed beetle, Ophraella communa LeSage, was examined in Tsukuba, Japan. Many adults of both sexes were found overwintering inside the rolled parts of dead leaves of Xanthium canadense in November. These adults had already accumulated triacylglycerol as energy reserves, and were able to survive the winter and to reproduce in the spring. No eggs and larvae were found on X. canadense throughout the observation period, although overwintered adults were temporarily found in May. In contrast, reproduction occurs on Ambrosia artemisiifolia and A. trifida in late April. These results suggest that O. communa adults mainly use dead leaves of X. canadense as an overwintering shelter in Tsukuba, while they reproduce only on A. artemisiifolia and A. trifida in the spring. Such a seasonal migration between host plants may be important for the survival strategy.