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排序方式: 共有117条查询结果,搜索用时 15 毫秒
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MASASHI YOSHIDA GO WAKABAYASHI HIDEKI ISHIKAWA YOSHIHIDE OTANI MOTOHIDE SHIMAZU TETSURO KUBOTA KOICHIRO KUMAI IWAO KUROSE SOICHIRO MIURA HIROMASA ISHII MASAKI KITAJIMA 《Journal of gastroenterology and hepatology》1998,13(1):104-108
The effects of camostat mesilate, a synthetic serine protease inhibitor on gastric microcirculation and active oxygen species generated by leucocytes from the gastric and jugular veins in the early period after thermal injury were assessed. Male Wistar rats were anaesthetized and a 30% full skin-thickness dorsal burn was inflicted. Camostat mesilate (100 mg/kg) was dissolved in distilled water and administered orally to rats 40 min before thermal injury (the camostat group). The control animals (the vehicle group) were administered distilled water orally. Rolling leucocytes as well as Monastral blue B deposits in venules were observed using in vivo microscopy. Active oxygen species were measured by chemiluminescence. Camostat mesilate decreased the total length of gastric erosion, venular deposits of Monastral blue B, and rolling of leucocytes in venules, and relatively increased luminol-dependent chemiluminescence activity generated by zymosan-stimulated leucocytes 15 min after thermal injury. These results suggest that serine proteases are involved in the formation of gastric erosions and gastric microcirculatory disturbance in the early period after thermal injury. 相似文献
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KATSUMOTO KATO HIROSHI SANO NAOYUKI KATADA DAISAKU NISHIMURA MASAYUKI TAKEICHI MASAKI KANZAKI TETSUO HAYAKAWA YASUO KOYAMA 《Journal of gastroenterology and hepatology》1987,2(6):539-546
In order to clarify the characteristics of infectious mononucleosis hepatitis (IMH) in Japan, 20 cases with IMH treated at Kamo Hospital during the past 6 years (Group I) were analysed in comparison with cases of acute viral hepatitis, especially type A. The test for heterophil antibody was positive in only two cases. During the same period 209 cases were treated for acute viral hepatitis (type A: 77 cases = Group A; type B: 61 cases; type non-A, non-B: 71 cases). In Group I the common clinical symptoms and signs were headache, sore throat and lymph node swelling; jaundice was not as common as in Group A. GOT and GPT activities increased moderately in the acute stage, but they were significantly lower than those in Group A. LDH, AP, GGT and LAP activities were disproportionately higher to GPT activity in Group I. Liver biopsy in the convalescent stage showed that lipofuscin deposition and sinusoidal mononuclear cell infiltration were more prominent in Group I, while sinusoidal neutrocyte infiltration and focal necrosis at periportal areas were more common in Group A. Differential diagnosis of the two diseases could be made using these clinical features and histological findings. However, immunological differentiation is required for specific diagnosis because some features such as fever, prolonged elevation of thymol turbidity test, atypical lymphocytes in peripheral blod and predilection for young people were observed in both groups. Furthermore, the present study indicated that IMH is no longer rare and most cases do not demonstrate heterophil antibody in Japan. 相似文献
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IZUMI HASHIMOTO KAZUYOSHI IMAIZUMI NAOZUMI HASHIMOTO HIROSHI FURUKAWA YUKIHIRO NODA TSUTOMU KAWABE TOYOHIRO HONDA TOMOMI OGAWA MASAKI MATSUO NAOYUKI IMAI SATORU ITO MITSUO SATO MASASHI KONDO KAORU SHIMOKATA YOSHINORI HASEGAWA 《Respirology (Carlton, Vic.)》2013,18(2):340-347
Background and objective: Bronchiolitis obliterans (BO) has been reported to develop following ingestion of Sauropus androgynus (SA), a leafy shrub distributed in Southeast Asia. Little is known about direct effects of SA on airway resident cells or haematopoietic cells in vitro. Identification of the SA component responsible for the development of BO would be an important key to elucidate its mechanism. We sought to elucidate the direct effects of SA on airway resident cells or haematopoietic cells and identify the SA element responsible for the pathogenesis of BO. Methods: SA dry powder was partitioned into fractions by solvent extraction. Human and murine monocytic cells, epithelial cells and endothelial cells were cultured with SA solution or fractions eluted from SA. We also investigated the effect of SA in vivo using a murine BO syndrome (BOS) model. Results: The aqueous fraction of SA induced significant increases of inflammatory cytokine and chemokine production from monocytic lineage cells. This fraction also induced significant apoptosis of endothelial cells and enhanced intraluminal obstructive fibrosis in allogeneic trachea allograft in the murine BOS model. We found individual differences in tumour necrosis factor α (TNF‐α) production from monocytes of healthy controls stimulated by this aqueous fraction of SA, whereas it induced high‐level TNF‐α production from monocytes of patients with SA‐induced BO. Conclusions: These results suggest that an aqueous fraction of SA may be responsible for the pathogenesis of BO. 相似文献
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Effects of glycyrrhizin on immune-mediated cytotoxicity 总被引:10,自引:0,他引:10
MASAHIDE YOSHIKAWA YUJI MATSUI HIROSHI KAWAMOTO NORIE UMEMOTO KAZUMI OKU MASAKI KOIZUMI JUNICHI YAMAO SHIGEKI KURIYAMA HIROSHI NAKANO NOBUMICHI HOZUMI SHIGEAKI ISHIZAKA HIROSHI FUKUI 《Journal of gastroenterology and hepatology》1997,12(3):243-248
Intravenous administration of glycyrrhizin is known to decrease elevated plasma transaminase levels in patients with chronic viral hepatitis, in which immune-mediated cytotoxicity by cytotoxic T lymphocytes and tumour necrosis factor (TNF)-α is considered to play an important pathogenic role. However, the immunological interpretation of the transaminase-lowering action of glycyrrhizin is not known. Studies were performed to elucidate this action immunologically by assessing the effects of glycyrrhizin on immune-mediated cytotoxicity using an antigen-specific murine CD4+ T hybridoma line, which exhibits cytotoxicity against antigen-presenting cells after stimulation with specific antigen, and a murine TNF-α-sensitive fibroblast line. Glycyrrhizin inhibited the cytotoxic activity of the T cells against antigen-presenting cells and also suppressed TNF-α-induced cytotoxicity in the TNF-α-sensitive cell line in vitro. These results suggest that the decrease of elevated transaminase levels by glycyrrhizin in patients with chronic viral hepatitis is mediated in part by inhibition of immune-mediated cytotoxicity against hepatocytes. 相似文献
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YOSHIAKI KANEKO M.D. Ph .D. TADASHI NAKAJIMA M.D. Ph .D. AKIHIRO SAITO M.D. TADANOBU IRIE M.D. MASAKI OTA M.D. TOSHIMITSU KATO M.D. TAKAFUMI IIJIMA M.D. MAMORU MANITA M.D. Ph .D. TOSHIO ITO M.D. MASAHIRO AKIYAMA M.D. Ph .D. YASUHIRO TANIGUCHI M.D. MASAHIKO KURABAYASHI M.D. Ph .D. 《Pacing and clinical electrophysiology : PACE》2009,32(S1):S72-S75
Background: The purpose of this study was to identify the His-bundle (HB) versus right bundle branch (RBB) during electrophysiologic studies, using the V3 phenomenon, and to compare the timing of HB versus RBB potentials of sinus cycles (His-ventricular [H-V] interval).
Methods: The study enrolled 16 patients without structural heart disease, who underwent electrophysiologic studies during which the H-V interval was within normal limits and the V3 phenomenon was induced during recordings of the HB and the RBB potentials by a multi-electrode catheter. The recording site of the earliest HB potential just before the V3 phenomenon was defined as the branching portion of His bundle (HBBP), the site immediately proximal to the HBBP as the HB, and the site immediately distal to the HBBP as the RBB.
Results: The HBBP was identified in all patients. In all cases but one patient, the H-V interval measured at the HB adjacent to the HBBP was ≥35 ms. However, in 12 patients, the H-V interval measured at the RBB adjacent to the HBBP was also ≥35 ms.
Conclusions: The electrophysiologic identification of HB versus RBB by simultaneous recordings of HB and RBB potentials during induction of the V3 phenomenon was feasible. When the discrimination between HB and RBB was based on the measurement of the H-V interval, the proximal portion of the RBB was frequently misidentified as the HB. 相似文献
Methods: The study enrolled 16 patients without structural heart disease, who underwent electrophysiologic studies during which the H-V interval was within normal limits and the V3 phenomenon was induced during recordings of the HB and the RBB potentials by a multi-electrode catheter. The recording site of the earliest HB potential just before the V3 phenomenon was defined as the branching portion of His bundle (HBBP), the site immediately proximal to the HBBP as the HB, and the site immediately distal to the HBBP as the RBB.
Results: The HBBP was identified in all patients. In all cases but one patient, the H-V interval measured at the HB adjacent to the HBBP was ≥35 ms. However, in 12 patients, the H-V interval measured at the RBB adjacent to the HBBP was also ≥35 ms.
Conclusions: The electrophysiologic identification of HB versus RBB by simultaneous recordings of HB and RBB potentials during induction of the V3 phenomenon was feasible. When the discrimination between HB and RBB was based on the measurement of the H-V interval, the proximal portion of the RBB was frequently misidentified as the HB. 相似文献
9.
Kazuko ISHIGAKI Harue MASAKI Nobue NAKAMURA Misako MIYAZAKI Noriko YAMAMOTO-MITANI 《Japan Journal of Nursing Science》2006,3(1):77-82
Aim: The Center of Excellence for the Creation and Dissemination of a New Japanese Nursing Science at Chiba University School of Nursing is now in its third year of operation. This center aims to develop nursing science that is appropriate for Japanese culture and to internationally disseminate the importance of culturally based care. Our project seeks to systematically transform the art of nursing practise into a nursing science. Method: To date, multiple frameworks have been created through the qualitative meta‐synthesis of research on effective nursing care. To create a nursing science, these frameworks derived from meta‐synthesis must be verified and internalized in nursing practise. Results: After three years of research, the following findings are emerging: professional care relationships in nursing practise in Japan are characterized by the bidirectional process between the nurse and the client, in which both gradually undergo a transformation in order to establish a collaborative, therapeutic relationship; Japanese nurses emphasize the importance of understanding adolescent clients’ subjective understanding of their own life with self‐care, as well as social support; and the priority for community health nurses in Japan is to create support systems in the community, regardless of whether the intended client is an individual, a family, a specific group, or the community as a whole. Conclusions: Our future efforts will focus on verifying our findings through interdisciplinary and international comparative research and by integrating various frameworks in order to create a new Japanese nursing science. 相似文献
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