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TOSHIYASU SAKANE MOTOHIRO AKIZUKI YOKO TAKI SHINJI YAMASHITA HITOSHI SEZAKI TANEKAZU NADAI 《The Journal of pharmacy and pharmacology》1995,47(5):379-381
To clarify the relationship between the direct transport from the rat nasal cavity to the cerebrospinal fluid (CSF) and the molecular weight of the drug, the transport of fluorescein isothiocyanate-labelled dextran (FD) with various molecular weights was investigated. FDs (average molecular weights 4400 (FD4); 9400 (FD10); 18 900 (FD20); 40 500 Da (FD40)) were administered nasally or intravenously to rats, and the concentrations in the plasma and the CSF were measured and compared. None of the FDs were detected in the CSF after intravenous administration. However, FD4, FD10 and FD20 were observed to appear in the CSF after nasal administration, whereas the concentration in the plasma was much lower than that after intravenous administration. FD40 was not detected even after nasal administration. In addition, the concentration of these FDs in the CSF decreased with the increase in the molecular weight of FDs. These findings show that drugs with a molecular weight up to at least 20 000 Da can be directly transported from the nasal cavity to the CSF and that the transport of FDs to the CSF is dependent on their molecular weights. 相似文献
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Takeshi SHIMIZU Shingo TOYOTA Kanji NAKAGAWA Tomoaki MURAKAMI Kanji MORI Haruhiko KISHIMA Takuyu TAKI 《Neurologia medico-chirurgica》2021,61(1):55
One of the merits of recently introduced exoscopes, including ORBEYE, is that they are superior to a conventional microscope in terms of ergonomic features. Taking advantage of it, the retrosigmoid approach can be performed in the supine position using ORBEYE. We report a consecutive series of 14 operations through the retrosigmoid approach in the supine position using ORBEYE. Fourteen consecutive patients who underwent surgery through the retrosigmoid approach for cerebellopontine (CP) angle lesions in the supine position using ORBEYE were targeted, and surgical outcomes and complications were examined. We evaluated the posture of the operator and the surgical field during this approach compared with those using a conventional microscope. In all 14 cases, all operative procedures were accomplished only using the ORBEYE. There were no operative complications due to this approach. Using ORBEYE, even when the angle of the operative visual axis was horizontal, the operators could manipulate in a comfortable posture. They were not forced to be in an uncomfortable posture that extended their arms, as is often the case with a conventional microscope. Therefore, they could use shorter surgical instruments. As the cerebellum shifted downward with gravity even using slight retraction during this approach, the working space of the surgical field was easily secured. Through this approach, the operators can perform stable microsurgery of CP angle lesions in a comfortable posture. This approach can reduce the burden on the operator and the patient, leading to a refined surgical procedure. 相似文献
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TAKUYA MYOJO M.D. NOBUYUKI SATO M.D. Ph.D. MOTOKI MATSUKI M.D. OSAMU TANIGUCHI M.D. HIDEKI NAKAMURA M.D. Ph.D. NAOYUKI HASEBE M.D. Ph.D. 《Pacing and clinical electrophysiology : PACE》2012,35(1):e27-e30
We describe a case of a myocardial infarction, in which prominent ischemic J waves were documented during recurrent ventricular fibrillation attacks. The patient was referred to our hospital to treat an out‐of hospital cardiac arrest. Although the 12‐lead electrocardiogram obtained just after the first cardioversion did not show any apparent J waves, a J wave‐like steep downsloping type ST‐segment elevation associated with q waves in the inferior leads was documented during multiple episodes of ventricular fibrillation. Our report revealed the appearance of J waves as an important marker for lethal arrhythmias in acute ischemia. (PACE 2012; 35:e27–e30) 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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TORU KANNO NOBORU SHIBASAKI MASAAKI ITO YUTAKA TSUJI YOJI TAKI HIDEO TAKEUCHI HIROYA MIHARA MIKA IKEDA YUJI YOSHIMOTO 《International journal of urology》2005,12(2):228-230
Abstract A 47-year-old man was admitted with the chief complaint of a urethral defect. An approximately 17-cm defect of the urethra seemed to have been occurred by the infection of implanted foreign bodies in the penile skin. Reconstruction of the urethra and the ventral skin was performed with a free radial forearm flap. A fistula formed at the proximal anastomosis after the operation, but was controlled conservatively. Urethral stricture at the proximal anastomosis subsequently developed. A urethral stent made of shape memory alloy was placed with the preservation of voiding function. 相似文献
9.
YOSHIAKI YAMADA KOGENTA NAKAMURA SHIGEYUKI AOKI TOMOHIRO TAKI HIROTO KOKUBO HIROYUKI MATSUBARA MOTOI TOBIUME NOBUAKI HONDA 《International journal of urology》2006,13(2):111-115
OBJECTIVE: To assess the clinical efficacy of endoscope-assisted minilaparotomic radical retropubic prostatectomy (EAM-RRP) compared with conventional radical retropubic prostatectomy (cRRP). METHODS: From September 2001 to December 2003, 30 patients with localized prostate cancer were treated by EAM-RRP. The surgical manipulation was performed through the wound with thoracoscopic assistance, using standard surgical instruments. In all cases, 800 mL of blood was collected from the patient for autotransfusion. For both EAM-RRP and cRRP, the internal iliac and obturator lymph nodes were dissected before the prostate removal. Clinical indicators such as operation time, blood loss, and duration of postoperative urine incontinence were analysed in the two groups. RESULTS: The postoperative period before ambulation and the duration of postoperative urine incontinence were significantly shorter after EAM-RRP than after cRRP, while no significant difference was found in operation time, blood loss, and duration of urethral catheterization. None of the cases required allotransfusion. CONCLUSION: EAM-RRP, which had a shorter postoperative period before ambulation and continence, is considered a safe and useful technique for radical prostatectomy. 相似文献
10.
TOSHIHARU TAKEUCHI NOBUYUKI SATO YUICHIRO KAWAMURA FUMIHIKO TAKAHASHI MOTOHIKO SATO KENJIRO KIKUCHI NOBUYUKI AKASAKA† KAZUTOMO GO† KAZUHIRO FUJIMOTO‡ NAOYUKI HASEBE 《Pacing and clinical electrophysiology : PACE》2003,26(2P1):632-636
TAKEUCHI, T., et al. : A Case of a Short-Coupled Variant of Torsades De Pointes with Electrical Storm. This case report describes a short-coupled variant of Torsades de Pointes with a characteristic ECG pattern consisting of a prominent J wave in leads V3 –V6 , in which an electrical storm was evoked with autonomic receptor stimulation and a blockade test. The patient's frequent VF attacks were triggered by short-coupled premature ventricular contractions with a right bundle branch block morphology and left-axis deviation, and were suppressed by deep sedation followed by a combination therapy using verapamil and mexiletine. Interestingly, with the use of those drugs, the prominent J wave diminished. The mechanism underlying this syndrome is discussed. (PACE 2003; 26[Pt. I]:632–636) 相似文献