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排序方式: 共有44条查询结果,搜索用时 15 毫秒
1.
KENTA MOTOMURA HIRONORI SAKAI HIDEHIKO ISOBE HAJIME NAWATA 《Journal of gastroenterology and hepatology》1997,12(12):887-892
All-trans retinoic acid (ATRA) has been reported to exert major effects on the immune system, including monocytes/macrophages. The present study was designed to determine whether ATRA would modulate macrophage-associated liver injury induced by Propionibacterium acnes and lipopolysaccharide (LPS) in rats. All-trans retinoic acid administration alleviated the liver injury and reduced the incidence of death following hepatic failure. Serum alanine aminotransferase (ALT) levels 5 h after, and survival rates within 12 h after the administration of LPS were significantly lower in the ATRA-treated group (134 ± 119 IU/L and 72.7%) compared with the control group (713 ± 411 IU/L and 18.2%; P < 0.05). Histological findings supported these results. These effects may be due to suppression of tumour necrosis factor-α (TNF-α) and superoxide anions produced by activated macrophages. Serum levels of TNF-α 1 h after LPS administration were significantly lower in the ATRA-treated group (60.5 ± 7.0 ng/mL) as compared with the control group (105.2 ± 39.3 ng/mL; P < 0.05). Formazan deposition that was generated by the perfusion of the liver with nitroblue tetrazolium, also suggested suppression of the release of superoxide anions from hepatic macrophages. These results suggest that ATRA acts as an immunomodulator in liver injury by suppressing the activation of liver macrophages. 相似文献
2.
Abstract Daan's two process model is known to be one of the most powerful models, covering various situations from free-running to sleep deprivation. In this study, bifurcation properties of the model dynamics as function of a gap, D , between the threshold processes are clarified using a circle map. As a function of D , we will show that the model has the different types of the mutual entrainment regions that are intervened by the tangent bifurcation. The variable behavior of human circadian rhythm is suggested to be systematically understood based on the bifurcation properties of the two process model. 相似文献
3.
KUMIKO MASUYA HITOSHI OKADA TADASHI IMAI KENICHI ISOBE SUSUMU ITOH 《Pediatrics international》2006,48(2):163-165
4.
YUKIHIKO KAWASAKI MITSUAKI HOSOYA SEIJI YASUMURA TETSUYA OHIRA HIROAKI SATOH HITOSHI SUZUKI AKIRA SAKAI AKIRA OHTSURU ATSUSHI TAKAHASHI KOTARO OZASA GEN KOBASHI KENJI KAMIYA SHUNICHI YAMASHITA MASAFUMI ABE THE FUKUSHIMA HEALTH MANAGEMENT SURVEY GROUP 《Fukushima journal of medical science》2015,61(2):101-110
5.
SHINSUKE MIYAZAKI M.D. TAISHI KUWAHARA M.D. ATSUSHI KOBORI M.D. YOSHIHIDE TAKAHASHI M.D. ASUMI TAKEI M.D. AKIRA SATO M.D. MITSUAKI ISOBE M.D. ATSUSHI TAKAHASHI M.D. 《Journal of cardiovascular electrophysiology》2010,21(11):1193-1198
AF Ablation in Patients With Valvular Heart Disease . Background: The purpose of this study is to evaluate the efficacy of atrial fibrillation (AF) ablation in patients with moderate valvular heart disease (VHD). Methods: In total, 534 consecutive patients who underwent AF ablation were enrolled. Patients with a history of valve surgery or other structural heart disease were excluded. Patients with clinically moderate VHD (group‐1, n = 45) were compared with those without VHD (control group‐2, n = 436). Ipsilateral pulmonary vein antrum isolation (PVAI) was performed with a double Lasso technique in all the patients. Left atrial (LA) linear ablation was undertaken in persistent AF patients, if AF was inducible after PVAI. Results: Patients in group‐1 were significantly older and had a larger LA. PVAI was successfully achieved in all the patients. Patients in group‐1 received LA linear ablation more frequently during the index procedure. After a median of 26 months from the index procedure, the freedom from AF was significantly lower in group‐1 than group‐2 off antiarrhythmic drugs (AADs) (47% vs 69%, P = 0.002). Although there were more number of total procedures in group‐1 than group‐2, the freedom from AF was lower at median 24 months after the last procedure (78% vs 87%, P = 0.038). There was no significant difference in the freedom from AF on AADs (91% vs 95%, P = 0.356) or complication rate between the 2 groups. Atrial tachycardia following the index procedure was observed more frequently in group‐1 (P = 0.001). Conclusion: The patients with VHD undergoing AF ablation are less likely to remain in sinus rhythm at long term without AADs than those without VHD. (J Cardiovasc Electrophysiol, Vol. 21, pp. 1193‐1198, November 2010) 相似文献
6.
TADASHI IMAI MASATOSHI KONDO KENICHI ISOBE SUSUMU ITOH SHOJU ONISHI 《Pediatrics international》1996,38(4):343-347
The effect of insulin induced hypoglycemia on cerebral energy metabolism was examined in four newborn piglets. Cerebral energy metabolism was assessed using in vivo 31P-nuclear magnetic resonance spectroscopy. It was demonstrated that the normal level of phosphocreatine/inorganic phosphate (PCr/Pi), an indicator of phosphorylation potential, was maintained at a blood glucose level of 40 mg/dL or above, whereas when blood glucose was reduced to less than 40 mg/dL, PCr/Pi rapidly decreased in parallel with this. Below the critical blood glucose level of 40 mg/dL, a positive correlation (y = 0.02x + 0.632; r = 0.668; P < 0.001) existed between blood glucose and PCr/Pi. In the present investigation, a reduction of blood glucose level to 20 mg/dL or lower resulted in a PCr/Pi of less than 1, indicating a state of cerebral energy failure. The intracellular pH (pHi) was 7.08 ± 0.05 at the onset and 7.15 ± 0.07 in the hypoglycemic state, indicating no significant difference between the two groups. The present study has clarified that cerebral energy failure occurs when the blood glucose level is about 20 mg/dL or lower. The critical point of blood glucose exists to maintain brain energy metabolism. 相似文献
7.
OSAMU KINOSHITA MINORU HONGO YUKO SAIKAWA TSUTOMU KATSUYAMA MASAO TANAKA MASASHI TAKEDA HIROAKI YAMAMOTO MITSUAKI ISOBE MORIE SEKIGUCHI 《Pacing and clinical electrophysiology : PACE》1997,20(12):2949-2953
The purpose of this study was to evaluate heart rate variability (HRV) in patients with familial amyloid polyneuropathy (FAP) using the time- and frequency-domain analysis. The study population consisted of 19 patients with FAP, and 19 age and sex matched normal volunteers. The 24-hour Holter recordings of all subjects in sinus rhythm and off medication were analyzed. Five time-domain indices of HRV were computed. The frequency component of HRV was calculated by fast Fourier transform analysis of the RR intervals. The power spectrum of the low frequency (LF) between 0.04–0.15 Hz and high frequency (HF) between 0.15–0.40 Hz and the LF/HF ratio was calculated. Global measures of HRV including the standard deviation of the mean of RR intervals (SDNN) and the standard deviation of 5-minute mean RR intervals (SDANN) were decreased in patients with FAP. Specific vagal influences on HRV including the proportion of RR intervals more than 50 milliseconds different (pNN50) and the HF power on spectral analysis were less in patients with FAP. LF power and LF/HF ratio were more decreased in patients with FAP at the advanced stage than at the early stage. In conclusion, HRV was significantly decreased in patients with FAP at the early stage, and sympathetic activity was more decreased in patients at the advanced stage. These findings suggest that the decrease of the HRV is an indicator of this disease and the power spectral analysis of the HRV is beneficial in assessing the severity of the autonomic dysfunction. 相似文献
8.
Impact of Non‐Pulmonary Vein Foci on the Outcome of the Second Session of Catheter Ablation for Paroxysmal Atrial Fibrillation
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MASATERU TAKIGAWA M.D. ATSUSHI TAKAHASHI M.D. TAISHI KUWAHARA M.D. KENJI OKUBO M.D. YOSHIHIDE TAKAHASHI M.D. EMIKO NAKASHIMA M.D. YUJI WATARI M.D. KAZUYA YAMAO M.D. JUN NAKAJIMA M.D. KATSUMASA TAKAGI M.D. SHIGEKI KIMURA M.D. HIROYUKI HIKITA M.D. KENZO HIRAO M.D. MITSUAKI ISOBE M.D. 《Journal of cardiovascular electrophysiology》2015,26(7):739-746
9.
T. FUKUTOMI S. SAKAMOTO H. ISOBE H. SAKAI A. MASUMOTO H. NAWATA 《Journal of gastroenterology and hepatology》1992,7(6):596-601
The serum levels of the 7S domain of type IV collagen were measured with a radio-immunoassay in 42 patients with primary biliary cirrhosis (asymptomatic: n = 28; symptomatic: n = 14), 10 patients with chronic active hepatitis, 10 patients with liver cirrhosis and 10 healthy female controls. Serum levels of the 7S domain of type IV collagen were: 4.28 ng/mL (3.88-4.72 ng/mL; mean and range of mean +/- s.d.) in healthy controls; 5.97 ng/mL (5.07-7.02 ng/mL) in patients with chronic active hepatitis; 8.23 ng/mL (6.40-10.58 ng/mL) in patients with liver cirrhosis; and 6.79 ng/mL (4.76-9.67 ng/mL) in patients with primary biliary cirrhosis. Patients with liver cirrhosis and primary biliary cirrhosis had higher levels of serum 7S domain of type IV collagen than healthy controls (P < 0.001, respectively). Serum levels of the 7S domain of type IV collagen in patients with asymptomatic primary biliary cirrhosis, 5.83 ng/mL (4.55-7.48 ng/mL) were significantly lower than those in symptomatic primary biliary cirrhosis, 9.18 ng/mL (6.53-12.91 ng/mL; P < 0.001). Serum levels of the 7S domain of type IV collagen increased significantly along with advancement of the histological stages of primary biliary cirrhosis. Serum levels of the 7S domain of type IV collagen in the paired sera of eight patients with asymptomatic primary biliary cirrhosis (mean interval 30 months, range 12-48 months) showed significant rises during the intervals (P < 0.05), while serum levels of albumin and total bilirubin did not change significantly during these intervals.(ABSTRACT TRUNCATED AT 250 WORDS) 相似文献
10.