151
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Iwao T, Toyonaga A, Ikegami M, Sugawara H, Sumino M, Takagi K, Oho K, Sakaki M, Ohkubo K, Inoue R. Nicardipine infusion improved hepatic function but failed to reduce hepatic venous pressure gradient in patients with cirrhosis. Am J Gastroenterol 1992; 87:326-31. [PMID: 1539567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We investigated the effects of nicardipine on systemic and splanchnic hemodynamics and on liver function in 16 patients with cirrhosis and portal hypertension. Patients received a continuous infusion of 0.3 mg/min of nicardipine (n = 10) and a control infusion (n = 6). No significant changes were observed after a control infusion. In contrast, systemic vasodilatation, evidenced by a significant fall in mean arterial pressure (-14%, p less than 0.01) and systemic vascular resistance (-30%, p less than 0.01), increased heart rate (+8%, p less than 0.01) and cardiac output (+21%, p less than 0.01), and increased hepatic blood flow (+43%, p less than 0.01) were observed at 60 min after a continuous infusion of nicardipine. Although nicardipine improved hepatic function (intrinsic clearance from 0.29 +/- 0.13 to 0.33 +/- 0.15 L/min, p less than 0.05), portal pressure evaluated by hepatic venous pressure gradient was not reduced significantly (from 16.3 +/- 4.9 to 15.1 +/- 5.7 mm Hg; NS). We conclude that a continuous infusion of nicardipine improves liver function but has no beneficial effect on portal pressure in patients with cirrhosis.
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Affiliation(s)
- T Iwao
- Second Department of Medicine, Kurume University School of Medicine, Japan
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152
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Yamashita F, Iwao T, Torimura T, Tanaka M, Hirai K, Abe M, Toyonaga A, Sugihara S, Kojiro M, Tanikawa K. Sclerosing hepatocellular carcinoma with hypercalcemia--a case report. Kurume Med J 1992; 39:113-6. [PMID: 1328759 DOI: 10.2739/kurumemedj.39.113] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A case of sclerosing hepatocellular carcinoma (SHCC) with hypercalcemia was reported. Clinical studies revealed a tumor at the liver hilum with invasion into the bile duct. Light microscopy of the tumor disclosed a moderately differentiated hepatocellular carcinoma (HCC) of the trabecular type with diffuse fibrous stroma. Abundant dense granules were observed in the cytoplasm of the tumor cells with electron microscopy. The elevated serum calcium (13.9 mg/dl) returned to the normal range after resection of the tumor.
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Affiliation(s)
- F Yamashita
- Department of Internal Medicine, Kurume University School of Medicine, Japan
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153
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Iwao T, Toyonaga A, Sumino M, Takagi K, Ohkubo K, Inoue R, Tanikawa K. Effect of intraportal nitroglycerin on portosystemic hemodynamics in patients with cirrhosis: comparison with i.v. route. J Clin Gastroenterol 1991; 13:424-31. [PMID: 1918848 DOI: 10.1097/00004836-199108000-00012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
We observed 18 patients with portal hypertension and cirrhosis to compare the effects of intraportal nitroglycerin on portosystemic hemodynamics with the i.v. route. Patients received 1 microgram/kg/min of nitroglycerin intravenously (n = 9) or the same dose of nitroglycerin directly into the portal vein (n = 9). Both routes of nitroglycerin significantly reduced mean arterial pressure and this effect was higher with the i.v. route (-28.0% versus -19.3%, p less than 0.02). The portal pressure, as evaluated by the portal venous pressure gradient or hepatic venous pressure gradient, was also reduced significantly in both groups. The fall in portal pressure was higher in the intraportal group, but the difference was not significant (intravenous versus intraportal, -23.9 versus -25.1% in portal venous pressure gradient, -25.2 versus -33.4% in hepatic venous pressure gradient). The hepatic blood flow was maintained despite the significant reduction in portal pressure by both routes. These results indicate that intraportal nitroglycerin decreases portal pressure with a smaller effect on systemic hemodynamics than the i.v. route. We conclude that the oral administration of nitroglycerin, which is a pathway equivalent to the intraportal route, may be more useful than the i.v. (i.e., sublingual) route in the treatment of portal hypertension.
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Affiliation(s)
- T Iwao
- Second Department of Medicine, Kurume University School of Medicine, Japan
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154
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Iwao T, Toyonaga A, Sumino M, Takagi K, Ohkubo K, Inoue R, Tanikawa K. Hemodynamic study during transdermal application of nitroglycerin tape in patients with cirrhosis. Hepatology 1991; 13:124-8. [PMID: 1899080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
We studied 14 patients with portal hypertension and cirrhosis using portal and hepatic vein catheterizations to determine the effects of transdermal application of nitroglycerin tape (containing 10 mg of nitroglycerin and capable of releasing 6 to 7 mg of nitroglycerin in 12 hr) on splanchnic hemodynamics. Patients randomly received nitroglycerin (n = 7) or a placebo (n = 7). No significant changes were observed after the administration of the placebo. In contrast, transdermal nitroglycerin caused a significant reduction in portal pressure, as evaluated by measurements of the portal venous pressure gradient (-22%, p less than 0.01). The reduction of portal pressure was due to a decrease in the portal venous pressure, with no changes in the free hepatic venous pressure. Despite the fall in portal pressure, the hepatic blood flow was maintained. These findings suggest that transdermal nitroglycerin could be potentially useful in the treatment of portal hypertension associated with cirrhosis.
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Affiliation(s)
- T Iwao
- Second Department of Medicine, Kurume University School of Medicine, Japan
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155
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Iwao T, Toyonaga A, Tanikawa K. Gastric red spots in patients with cirrhosis: subclinical condition of gastric mucosal hemorrhage? Gastroenterol Jpn 1990; 25:685-92. [PMID: 2279629 DOI: 10.1007/bf02779181] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The present study was intended to assess the incidence and the nature of gastric red spots (GRS) in patients with liver cirrhosis. Endoscopically, GRS was more frequently observed in patients with cirrhosis (n = 146) than those without cirrhosis (n = 103) (43.2% vs. 4.8%; P less than 0.001). There was no relationship between the incidence of GRS and the severity of cirrhosis or the size of varices. Portal venous pressure was higher in cirrhotics with GRS (n = 21) than those without GRS (n = 25) (33.7 +/- 6.0 mmHg vs. 28.2 +/- 4.8 mmHg; P less than 0.001). Morphometric analysis using the biopsied specimens was made in 16 cirrhotics with GRS, 12 cirrhotics without GRS, and 15 non-cirrhotics. The capillary bed occupation ratio (vascular area/mucosal area) was higher in cirrhotics with GRS (9.3 +/- 4.0%) than those without GRS 84.1 +/- 1.1%) or the non-cirrhotics (3.4 +/- 9.8%) (P less than 0.005, P less than 0.005), while there was no significant differences in the number of capillaries per unit area. Infiltrating inflammatory cell count was similar among the three groups. Extravascular red blood cell count per unit area was higher in cirrhotics with GRS (29.7 +/- 31.4) than those without GRS (5.4 +/- 5.1) or non-cirrhotics (5.4 +/- 6.3) (P less than 0.05, P less than 0.01). Furthermore, extravasation of red blood cells through defective portion of the endothelium and interposition of red blood cells in interepithelial spaces were observed electron microscopically in cirrhotics with GRS.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- T Iwao
- Second Department of Medicine, Kurume University School of Medicine, Japan
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156
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Iwao T, Yoshikawa H, Takada K, Muranishi S. Potentiation of antitumor effect of bleomycin by fusogenic lipid-surfactant mixed micelles. II. Tumor-neutralizing assay for inherently bleomycin-resistant murine leukemia. Chem Pharm Bull (Tokyo) 1988; 36:2270-3. [PMID: 2467754 DOI: 10.1248/cpb.36.2270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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157
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Iwao T, Hino T, Yamashita H, Hisanaga H, Nakashima H, Ide K, Yamashita K, Sasaki E, Toyonaga A, Tanikawa K. [An interesting case of metastasis to the bowel tract after removal of renal cell carcinoma]. Nihon Shokakibyo Gakkai Zasshi 1986; 83:1204-8. [PMID: 3761688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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158
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Yamashita F, Iwao T, Nohno R, Tanikawa K, Kojiro M. [A case of posttransfusion hepatitis showing epithelioid granuloma in the bone marrow with pure red cell aplasia (PRCA)]. Rinsho Ketsueki 1986; 27:910-5. [PMID: 3093730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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159
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160
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161
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Sakurai K, Ishii H, Kobayashi S, Iwao T. Isolation of 4 beta-hydroxywithanolide E, a new withanolide from Physalis peruviana L. Chem Pharm Bull (Tokyo) 1976; 24:1403-5. [PMID: 1021295 DOI: 10.1248/cpb.24.1403] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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162
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Nishioka K, Mikanagi K, Ooi Y, Hara I, Iwao T. [Clinical study of gout and hyperuricemia. (II) Physiopathology and diagnosis]. Ryumachi 1975; 15:141-53. [PMID: 1209374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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163
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Sato G, Furuta Y, Kodama H, Iwao T, Oka M. Enzootic occurrence of chloramphenicol-resistant Salmonella typhimurium var copenhagen in calf population. Am J Vet Res 1975; 36:839-41. [PMID: 1096689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Chloramphenicol (CP)-resistant Salmonella typhimurium var copenhagen was frequently isolated (44.1 to 76.7%) from dead, diseased, and healthy calves on 3 farms in 1973 in northern Japan. On 2 of the farms, CP-resistant salmonella appeared suddenly during an epizootic of salmonella infection, and persisted. Of 87 CP-resistant to tetracycline (TC), streptomycin (SM), and sulfonamides (SA), and the remaining 13 isolates from dead calves on a farm were resistant to TC, SM, SA, and kanamycin (KM). Resistance patterns of all CP-resistant isolates were transferred completely.
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164
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Tamaki S, Iwao T, Hosoda H. [Aluminous porcelain jacket crown made by direct firing with a phosphate-bonded investment. Part I. A basic investigation (author's transl)]. Nihon Shika Zairyo Kikai Gakkai Zasshi 1974; 31:74-83. [PMID: 4535432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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165
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Takigawa K, Yamauchi Y, Abe I, Iwao T, Yoshino S. [Therapeutic results of enchondroma in the hand]. Seikei Geka 1969; 20:1401-3. [PMID: 5393142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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166
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Akahori A, Okuno I, Okanishi T, Iwao T. Studies on the steroidal components of domestic plants. LV. The steroidal sapogenins of the female flowers and the seeds of Dioscorea tokoro Makino. Chem Pharm Bull (Tokyo) 1968; 16:1994-6. [PMID: 5710932 DOI: 10.1248/cpb.16.1994] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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167
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Higashi A, Takada S, Iwao T, Takigawa K, Kakurai S. [46 cases of hand tumors]. Seikei Geka 1968; 19:112-4. [PMID: 5692357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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168
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Ishihara M, Iwao T. Berichtigung. Naunyn Schmiedebergs Arch Pharmacol 1938. [DOI: 10.1007/bf01859215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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