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Fukatsu S, Ogihara S, Imada H, Ikemune S, Tamaru JI, Saita K. Chronic spontaneous epidural hematoma in the lumbar spine with cauda equina syndrome and severe vertebral scalloping mimicking a spinal tumor: a case report. BMC Musculoskelet Disord 2022; 23:508. [PMID: 35637479 PMCID: PMC9150287 DOI: 10.1186/s12891-022-05463-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 05/20/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Chronic spinal epidural hematomas (SEHs) are rare clinical entities. SEH with vertebral scalloping is extremely rare, with only a few cases having been reported to date. We report a unique case of spontaneous chronic SEH in the lumbar spine with severe vertebral scalloping mimicking an epidural tumor. CASE PRESENTATION A 71-year-old man presented with a 2-month history of lumbar pain and a 3-week history of paresthesia and pain in the right lower extremity, hypesthesia in the perineal and perianal regions, and bladder dysfunction. Computed tomography following myelography revealed an epidural mass lesion on the right side that compressed the dural sac and was associated with severe bony scalloping on the posterior wall of the L4 vertebral body. Magnetic resonance imaging (MRI) on T1- and T2-weighted images revealed a space-occupying lesion with heterogeneous intensity, and T1-gadolinium images showed an intralesional heterogeneous enhancement effect. A tumoral lesion in the spinal canal was suspected, based on preoperative imaging; therefore, a total spinal tumor resection was planned. Intraoperative findings revealed that the brownish lesion adhered to the dura and epidural tissues in the spinal canal, and the space-occupying mass in the scalloped cavity of the posterior wall of the L4 vertebra was encapsulated in red-brownish soft tissues. The lesion was totally resected in a piecemeal fashion, and pathological examination revealed a mixture of tissues that contained a relatively new hematoma with hemoglobin, as well as an obsolete hematoma with hemosiderin and amyloid deposits. The mass was diagnosed as a chronic epidural hematoma with recurrent hemorrhage. The postoperative course was uneventful, and the preoperative neurological symptoms immediately improved. CONCLUSIONS The preoperative diagnosis of chronic SEHs is challenging, as MRI results may not be conclusive, particularly in patients with scalloping of bony structures. Thus, chronic SEHs should be considered as a differential diagnosis in cases of suspected tumoral lesions in the spinal canal. To the best of our knowledge, this is the first reported case of acute exacerbation of chronic SEH with cauda equina syndrome and severe vertebral scalloping.
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Affiliation(s)
- Shusaku Fukatsu
- Department of Orthopaedic Surgery, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama, 350-8550, Japan
| | - Satoshi Ogihara
- Department of Orthopaedic Surgery, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama, 350-8550, Japan.
| | - Hiroki Imada
- Department of Pathology, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama, 350-8550, Japan
| | - Satoshi Ikemune
- Department of Orthopaedic Surgery, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama, 350-8550, Japan
| | - Jun-Ichi Tamaru
- Department of Pathology, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama, 350-8550, Japan
| | - Kazuo Saita
- Department of Orthopaedic Surgery, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama, 350-8550, Japan
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Fukatsu S, Kitamura K, Asai Y, Nagai K, Kikuchi M, Asano K, Tadokoro K, Yamanishi F, Tomita Y, Abe M, Wada T, Matsue Y, Nutahara D, Taira J, Nakamura H, Itoi T. A case of juvenile eosinophilic cholangitis: Rapid peripheral blood hypereosinophilia after admission leading to diagnosis. JGH Open 2021; 5:314-316. [PMID: 33553674 PMCID: PMC7857273 DOI: 10.1002/jgh3.12454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 11/01/2020] [Accepted: 11/03/2020] [Indexed: 02/05/2023]
Abstract
A 15-year-old boy was referred to our hospital with elevated hepatobiliary enzyme levels and jaundice. Magnetic resonance cholangiopancreatography performed at the previous medical facility revealed a stricture of the intrahepatic and extrahepatic bile duct. Computed tomography showed dilatation and wall thickness of the intrahepatic bile ducts. Primary sclerosing cholangitis or cholangiocarcinoma was suspected. Endoscopic retrograde cholangiopancreatography (ERCP) showed stricture in the intrahepatic and extrahepatic bile duct. On admission, the eosinophil count in the peripheral blood was normal; however, rapid hypereosinophilia in the peripheral blood was observed after admission, leading us to suspect eosinophilic cholangitis (EC). A bile duct biopsy showed inflammatory cells and eosinophil infiltration during a second ERCP. The patient was diagnosed with EC based on histopathology.
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Affiliation(s)
- Shusaku Fukatsu
- Department of Gastroenterology and HepatologyTokyo Medical University Hachioji Medical CenterTokyoJapan
| | - Katsuya Kitamura
- Department of Gastroenterology and HepatologyTokyo Medical University Hachioji Medical CenterTokyoJapan
| | - Yasutsugu Asai
- Department of Gastroenterology and HepatologyTokyo Medical University Hachioji Medical CenterTokyoJapan
| | - Kazumasa Nagai
- Department of Gastroenterology and HepatologyTokyo Medical University Hachioji Medical CenterTokyoJapan
| | - Miho Kikuchi
- Department of Gastroenterology and HepatologyTokyo Medical University Hachioji Medical CenterTokyoJapan
| | - Kyoko Asano
- Department of Gastroenterology and HepatologyTokyo Medical University Hachioji Medical CenterTokyoJapan
| | - Kenichi Tadokoro
- Department of Gastroenterology and HepatologyTokyo Medical University Hachioji Medical CenterTokyoJapan
| | - Fumito Yamanishi
- Department of Gastroenterology and HepatologyTokyo Medical University Hachioji Medical CenterTokyoJapan
| | - Yusuke Tomita
- Department of Gastroenterology and HepatologyTokyo Medical University Hachioji Medical CenterTokyoJapan
| | - Masakazu Abe
- Department of Gastroenterology and HepatologyTokyo Medical University Hachioji Medical CenterTokyoJapan
| | - Takuya Wada
- Department of Gastroenterology and HepatologyTokyo Medical University Hachioji Medical CenterTokyoJapan
| | - Yubu Matsue
- Department of Gastroenterology and HepatologyTokyo Medical University Hachioji Medical CenterTokyoJapan
| | - Daisuke Nutahara
- Department of Gastroenterology and HepatologyTokyo Medical University Hachioji Medical CenterTokyoJapan
| | - Junichi Taira
- Department of Gastroenterology and HepatologyTokyo Medical University Hachioji Medical CenterTokyoJapan
| | - Hironori Nakamura
- Department of Gastroenterology and HepatologyTokyo Medical University Hachioji Medical CenterTokyoJapan
| | - Takao Itoi
- Department of Gastroenterology and HepatologyTokyo Medical UniversityTokyoJapan
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Fukatsu S, Jo M, Ishida K, Yasuhara N, Kawamoto K. Evidence for amplified interband spontaneous emission in Si-based trans-column quantum dots. Materials Science and Engineering: C 2003. [DOI: 10.1016/j.msec.2003.09.144] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Affiliation(s)
- M. Jo
- Graduate School of Arts and Sciences, University of Tokyo, Komaba, Meguro, Tokyo 153‐8902, Japan
| | - K. Ishida
- Graduate School of Arts and Sciences, University of Tokyo, Komaba, Meguro, Tokyo 153‐8902, Japan
| | - K. Kawamoto
- Graduate School of Arts and Sciences, University of Tokyo, Komaba, Meguro, Tokyo 153‐8902, Japan
| | - S. Fukatsu
- Graduate School of Arts and Sciences, University of Tokyo, Komaba, Meguro, Tokyo 153‐8902, Japan
- PRESTO, Japan Science and Technology Corporation (JST), Kawaguchi, Saitama 332‐0012, Japan
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5
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Fukatsu S, Yano I, Igarashi T, Hashida T, Takayanagi K, Saito H, Uemoto S, Kiuchi T, Tanaka K, Inui K, Tanaka K, Inui K. Population pharmacokinetics of tacrolimus in adult recipients receiving living-donor liver transplantation. Eur J Clin Pharmacol 2001; 57:479-84. [PMID: 11699612 DOI: 10.1007/s002280100331] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.2] [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: 10/27/2022]
Abstract
OBJECTIVE To characterize the pharmacokinetics of tacrolimus in adult recipients receiving living-donor liver transplantation (LDLT). METHODS Thirty-five patients were given tacrolimus as 18- to 60-h intravenous infusions after surgery, followed by a 4-week course of oral dose therapy (at 0900 hours and 2100 hours). Blood samples were collected daily in the morning (0800 hours) beginning the day after surgery. Whole blood concentration data were evaluated by nonlinear mixed-effect modeling using the program NONMEM and were characterized using a one-compartment model. RESULTS The clearance (CL, l h(-1)) was related to the grafted hepatic weight, postoperative days (POD), and hepatic and renal dysfunction. Interindividual variabilities in CL, volume of distribution (V), and bioavailability (F) were 57.4%. 39.7%, and 63.0%, respectively, and the correlation between individual CL and F was 0.776. Residual intraindividual variability was 2.9 ng ml(-1). Based on the estimated final parameters, a typical recipient of LDLT with grafted hepatic weight of 600 g and normal hepatic and renal function would have a CL of 0.737 l h(-1) on POD 0 and 1.14 l h(-1) on POD 30, V of 1.52 l kg(-1) and F of 6.8%. CONCLUSIONS Nonlinear mixed-effect modeling was useful for analysis of pharmacokinetic characteristics of tacrolimus in LDLT patients. Immediately after surgery, patients receiving LDLT showed a smaller CL value than other transplant patients, and CL value increased with POD within 30 days after surgery. The estimated population pharmacokinetic parameters can be applied for a priori dosage calculations in adult patients with LDLT.
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Affiliation(s)
- S Fukatsu
- Department of Pharmacy, Kyoto University Hospital, Faculty of Medicine, Kyoto University, Japan
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Okuda M, Masaki K, Fukatsu S, Hashimoto Y, Inui K. Role of apoptosis in cisplatin-induced toxicity in the renal epithelial cell line LLC-PK1. Implication of the functions of apical membranes. Biochem Pharmacol 2000; 59:195-201. [PMID: 10810454 DOI: 10.1016/s0006-2952(99)00303-2] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.5] [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: 10/18/2022]
Abstract
The role of apoptosis and the implications of the functions of apical membranes in cisplatin-induced nephrotoxicity were investigated using the kidney epithelial cell line LLC-PK1. When LLC-PK1 cells were treated with 30 microM cisplatin, the number of floating cells was increased markedly. However, the number was not increased by treatment with 1 mM cisplatin, suggesting that different mechanisms were involved in the toxicities of these two treatments. DNA fragmentation, condensation of nuclear chromatin, and the absence of trypan blue staining suggested that cellular toxicity following treatment with 30 microM cisplatin for 24 hr was mediated predominantly by apoptosis. Specific activities of apical enzymes (gamma-glutamyltransferase, EC 2.3.2.2; and alkaline phosphatase, EC 3.1.3.1) in LLC-PK1 cells were decreased markedly by treatment with 30 microM cisplatin for 24 hr, whereas neither lactate dehydrogenase (LDH; EC 1.1.1.27) release nor a decrease in cellular protein content was observed following the same treatment. In addition, concomitant treatment with reduced glutathione completely attenuated both the apoptosis and the decrease of apical enzyme activities induced by 30 microM cisplatin. Neither DNA fragmentation nor condensation of chromatin was induced by treatment with 1 mM cisplatin for 12 hr. However, LDH release and a decrease in cellular protein level were induced by 1 mM cisplatin, suggesting that the toxic effect was due to necrosis. Under these conditions, specific activities of apical enzymes were not decreased. These results suggested that apoptosis was more responsible than necrosis for the loss of apical functions in cisplatin-induced toxicity in LLC-PK1 cells.
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Affiliation(s)
- M Okuda
- Department of Pharmacy, Kyoto University Hospital, Faculty of Medicine, Kyoto University, Japan
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7
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Muraki K, Fujiwara A, Fukatsu S, Shiraki Y, Takahashi Y. Evidence for resonant electron capture and charge buildup in GaAs/AlxGa1-xAs quantum wells. Phys Rev B Condens Matter 1996; 53:15477-15480. [PMID: 9983375 DOI: 10.1103/physrevb.53.15477] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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8
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Hirai H, Komiyama S, Fukatsu S, Osada T, Shiraki Y, Toyoshima H. Dependence of inter-edge-channel scattering on temperature and magnetic field: Insight into the edge-confining potential. Phys Rev B Condens Matter 1995; 52:11159-11164. [PMID: 9980216 DOI: 10.1103/physrevb.52.11159] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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9
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Usami N, Akiyama H, Shiraki Y, Fukatsu S. Dynamics of exciton diffusion in SiGe quantum wells on a ssV-groove patterned Si substrate. Phys Rev B Condens Matter 1995; 52:5132-5135. [PMID: 9981696 DOI: 10.1103/physrevb.52.5132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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10
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Funaoka M, Matsubara M, Seki N, Fukatsu S. Conversion of native lignin to a highly phenolic functional polymer and its separation from lignocellulosics. Biotechnol Bioeng 1995; 46:545-52. [DOI: 10.1002/bit.260460607] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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11
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Fujiwara A, Muraki K, Fukatsu S, Shiraki Y, Ito R. Enhancement of nonradiative recombination due to resonant electron capture in AlxGa1-xAs/GaAs quantum-well structures. Phys Rev B Condens Matter 1995; 51:14324-14329. [PMID: 9978362 DOI: 10.1103/physrevb.51.14324] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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12
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Fujiwara A, Takahashi Y, Fukatsu S, Shiraki Y, Ito R. Resonant electron capture in AlxGa1-xAs/AlAs/GaAs quantum wells. Phys Rev B Condens Matter 1995; 51:2291-2301. [PMID: 9978981 DOI: 10.1103/physrevb.51.2291] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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13
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Ebihara M, Fukatsu S, Hirano K, Ozaki H. Neutron activation analysis of trace copper, zinc and indium in geological and meteoritic samples, using rapid chemical separations. J Radioanal Nucl Chem 1994. [DOI: 10.1007/bf02037505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Yang WS, Wang XD, Cho K, Kishimoto J, Fukatsu S, Hashizume T, Sakurai T. Missing-dimer complexes and dimers on the Ge(001) surface. Phys Rev B Condens Matter 1994; 50:2406-2408. [PMID: 9976459 DOI: 10.1103/physrevb.50.2406] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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15
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Sakagami K, Atsumi K, Yamamoto Y, Tamura A, Yoshida T, Nishihata K, Fukatsu S. Synthesis and oral activity of pivaloyloxymethyl 7-[(Z)-2-(2-aminothiazol-4-yl)-2-methoxyiminoacetamido]-3(Z)- (4-methylthiazol-5-yl)vinyl-3-cephem-4-carboxylate (ME1207) and its related compound. Chem Pharm Bull (Tokyo) 1991; 39:2433-6. [PMID: 1804557 DOI: 10.1248/cpb.39.2433] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [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: 12/28/2022]
Abstract
7-[2-(2-Aminothiazol-4-yl)-2(Z)-methoxyiminoacetamido]-3(Z)- (4-methylthiazol-5-yl)vinyl-3-cephem-4-carboxylic acid (11, ME1206) and its 3-trans isomer (13) were prepared to test antibacterial activity. These compounds exhibited excellent antibacterial activity against both gram-positive and gram-negative bacteria, including beta-lactamase producing strains. The pivaloyloxymethyl esters (12 and 14) of the compounds (11 and 13) were prepared by esterification with pivaloyloxymethyl iodide. Among them, pivaloyloxymethyl 7-[(Z)-2-(2-aminothiazol-4-yl)-2-methoxyiminoacetamido]- 3(Z)-(4-methylthiazol-5-yl)vinyl-3-cephem-4-carboxylate (12, ME1207) showed good urinary recovery after oral administration in mice.
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Affiliation(s)
- K Sakagami
- Pharmaceutical Research Center, Meiji Seika Kaisha, Ltd., Yokohama, Japan
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Ogasawara N, Fujiwara A, Ohgushi N, Fukatsu S, Shiraki Y, Katayama Y, Ito R. Well-width dependence of photoluminescence excitation spectra in GaAs-AlxGa1-xAs quantum wells. Phys Rev B Condens Matter 1990; 42:9562-9565. [PMID: 9995196 DOI: 10.1103/physrevb.42.9562] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Sakagami K, Atsumi K, Tamura A, Yoshida T, Nishihata K, Fukatsu S. Synthesis and oral activity of ME1207, a new orally active cephalosporin. J Antibiot (Tokyo) 1990; 43:1047-50. [PMID: 2211357 DOI: 10.7164/antibiotics.43.1047] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Tatsuta K, Gunji H, Tajima S, Ishiyama T, Imai S, Okuyama S, Fukatsu S. Biosynthetic studies on oleandomycin by incorporation of the chemically synthesized aglycones. J Antibiot (Tokyo) 1990; 43:909-11. [PMID: 2201673 DOI: 10.7164/antibiotics.43.909] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- K Tatsuta
- Department of Applied Chemistry, Keio University, Yokohama, Japan
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Ishizawa T, Tsuji A, Tamai I, Terasaki T, Hosoi K, Fukatsu S. Sodium and pH dependent carrier-mediated transport of antibiotic, fosfomycin, in the rat intestinal brush-border membrane. J Pharmacobiodyn 1990; 13:292-300. [PMID: 2273445 DOI: 10.1248/bpb1978.13.292] [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 mechanism of intestinal absorption of an antimicrobial agent, fosfomycin (FOM), was investigated in rats using small intestinal brush-border membrane vesicles (BBMV). The uptake of [3H]FOM by BBMV was osmolarity- and temperature-sensitive and showed apparently saturable uptake kinetics consistent with the Michaelis-Menten equation, having Kt = 15.3 mM and Jmax = 7.78 nmol/30 s/mg protein at 37 degrees C. An overshoot uptake of FOM was observed in the presence of an inwardly direct Na+ gradient. The replacement of extravesicular Na+ with choline or mannitol significantly reduced the uptake. An addition of a protonophore, FCCP, significantly decreased the initial uptake of FOM in the absence of Na+ gradient but in the presence of a H+ gradient (pHin = 7.5, pHout = 6.0), whereas in the absence of a H+ gradient no significant difference was observed between the uptakes at an acidic pH (pHin = pHout = 6.0) and a neutral pH (pHin = pHout = 7.5). An inside negative potassium diffusion potential induced by valinomycin enhanced significantly the uptake of FOM. The uptake of FOM in the presence of both Na(+)- and H(+)-gradients was significantly inhibited by phosphate, arsenate and phosphonoformic acid (PFA), which are specific inhibitors of phosphate transport, but not by D-glucose. Based on these results, it is concluded that FOM transport in the small intestine is partially shared with the Na(+)-phosphate cotransport system and in part occurs via a H(+)-gradient dependent carrier-mediated system.
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Affiliation(s)
- T Ishizawa
- Faculty of Pharmaceutical Sciences, Kanazawa University, Japan
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20
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Kunimoto S, Komuro K, Nosaka C, Tsuchiya T, Fukatsu S, Takeuchi T. Biological activities of new anthracyclines containing fluorine, FAD104 and its metabolites. J Antibiot (Tokyo) 1990; 43:556-65. [PMID: 1694165 DOI: 10.7164/antibiotics.43.556] [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: 12/28/2022]
Abstract
From various new anthracyclines containing fluorine in their sugar moieties, 7-O-(2,6-dideoxy-2-fluoro-alpha-L-talopyranosyl)adriamycinone-14-hemi pimerate (FAD104) has been selected for clinical investigation, because of its excellent antitumor activity and solubility. In this paper, the mechanism whereby FAD104 exhibits good antitumor activity in vivo was studied through experiments in vitro in comparison with doxorubicin (DOX). FAD104 had weaker activity than DOX in DNA single and double strand scission in P388 cells and in binding to calf thymus DNA. FAD104 was taken up by P388 cells faster than DOX. The ester linkage in FAD104 was gradually hydrolyzed at neutral pH. FAD104 was metabolized to 7-O-(2,6-dideoxy-2-fluoro-alpha-L-talopyranosyl)adriamycinone (FT-ADM) when incubated with mouse or human serum. In mouse serum the esterase activity was about 100 times higher than in human serum. The product of nonenzymatic and enzymatic esterolysis, FT-ADM, was rapidly taken up by P388 cells and accumulated, reaching at a 9.7-fold higher level than DOX. Thus FAD104 was less active than DOX in itself, but it showed much higher activity through conversion into FT-ADM, due to the action of esterase or to spontaneous and gradual hydrolysis at physiological pH. 7-O-(2,6-Dideoxy-2-fluoro-alpha-L-talopyranosyl)adriamycinol (FT-ADM-OH), another metabolite found in mouse serum had the least biological activity among the fluorine-containing anthracycline glycosides, but its activity was still higher than DOX.
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Affiliation(s)
- S Kunimoto
- Institute of Microbial Chemistry, Tokyo, Japan
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21
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Sakagami K, Watanabe T, Fukatsu S, Nitta H, Hatanaka M, Ishimaru T. [Synthetic cephalosporins. V. Synthesis and antibacterial activity of 3-alkylthio-7 beta-[(Z)-2-(2-aminothiazol-4-yl)-2-(O-substituted oxyimino)acetamido]cephalosporins and related compounds]. YAKUGAKU ZASSHI 1989; 109:913-25. [PMID: 2698417 DOI: 10.1248/yakushi1947.109.12_913] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
3-Alkylthio-7 beta-[(Z)-2-(2-aminothiazol-4-yl)-2-(O-substituted oxyimino)acetamido]cephalosporins (6 and 7) and the 3-methoxy analogues (10) were prepared by coupling diphenylmethyl 7-amino-3-alkylthio-3-cephem-4-carboxylate (1 and 2) or diphenylmethyl 7-amino-3-methoxy-3-cephem-4-carboxylate with (Z)-2-(2-tritylaminothiazol-4-yl)-2-(O-substituted oxyimino)acetic acid (4), followed by deprotection and subjected to examination of antibacterial activities. The pivaloyloxymethyl esters (8 and 9) of the compounds (6 and 7) were also prepared and oral activities of these esters were compared with those of the parent compounds (6 and 7). The cephalosporins (6a-j and 7a-c) had potent and wide antibacterial spectra against Gram positive and Gram negative bacteria which were comparable to those of cefixime or cefteram. Among them, the cephalosporins (6f and 7c) and the pivaloyloxymethyl esters (8b and 9b) had good in vivo efficacy in mice against infections of Escherichia coli No. 29 and especially 8b showed high urinary recovery in mice.
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22
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Tsuchiya T, Takagi Y, Umezawa S, Takeuchi T, Komuro K, Nosaka C, Umezawa H, Fukatsu S, Yoneta T. Synthesis and antitumor activities of 14-O-acyl derivatives of 7-O-(2,6-dideoxy-2-fluoro-alpha-L-talopyranosyl)adriamycinone. J Antibiot (Tokyo) 1988; 41:988-91. [PMID: 3417571 DOI: 10.7164/antibiotics.41.988] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- T Tsuchiya
- Institute of Bioorganic Chemistry, Kawasaki-shi, Japan
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23
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Sakagami K, Watanabe T, Fukatsu S, Nitta H, Hatanaka M, Ishimaru T. Synthetic cephalosporins. II. The synthesis and oral activity of 7-[R-2-amino-2-(3-chloro-4-hydroxyphenyl)acetamido]-3-methylthio-3- cephem-4-carboxylic acid and related compounds. J Antibiot (Tokyo) 1987; 40:1325-30. [PMID: 3680042 DOI: 10.7164/antibiotics.40.1325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 01/06/2023]
Abstract
A series of 3-methylthio-3-cephem-4-carboxylic acids were prepared to test their antibacterial activities, and 7-[R-2-amino-2-(3-chloro-4-hydroxyphenyl)acetamido]-3-methylthio-3-ce phe m-4- carboxylic acid was found to be a new orally active antibiotic.
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Affiliation(s)
- K Sakagami
- Central Research Laboratories, Meiji Seika Kaisha, Ltd., Yokohama, Japan
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Aoyagi T, Wada T, Ohuchi S, Kawamura K, Fukatsu S, Umezawa H. In vivo actions of bestatin-related compounds in relation to their actions in vitro. Biochem Int 1984; 9:643-50. [PMID: 6525200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A study was performed to elucidate the effects of low-molecular-weight enzyme inhibitors on enzyme networks in vivo. Seven compounds, including bestatin and its 5 derivatives and arphamenine B, were tested, with each of them being administered to mice at the dose of 200 micrograms/day for 8 consecutive days. The spectrum of enzymatic changes thus induced were extensive and were not simply explainable by the in vitro actions of each agent administered. Nevertheless, a multivariate study on the changes in enzyme networks showed some degree of interrelationship between the in vitro and in vivo actions of the agents under study. The present findings seem to certify that the direct enzyme-inhibiting effect motivates the extensive movement of enzyme networks in vivo, although the latter often seems rather paradoxical at a glance.
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Hachisu M, Nakamura T, Kawashima H, Shitoh K, Fukatsu S, Koeda T, Sekizawa Y, Munakata M, Kawamura K, Umezawa H, Takeuchi T, Aoyagi T. Relationship between enhancement of morphine analgesia and inhibition of enkephalinase by 2S, 3R 3-amino-2-hydroxy-4-phenylbutanoic acid derivatives. Life Sci 1982; 30:1739-46. [PMID: 6124860 DOI: 10.1016/0024-3205(82)90308-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The effects of nineteen AHPA* derivatives were examined on morphine analgesia by tail-flick test in rats and on enkephalinase inhibition which was based on the formation of tyrosyl-glycyl-glycine from met-enkephalin. The correlation between the enhancement of morphine analgesia in vivo and enkephalinase inhibition in vitro was analyzed. The different analogs varied considerably in the degree of enhancement of morphine analgesia and inhibition of enkephalinase. A close relationship between enkephalinase inhibition expressed by IC50 in vitro and enhancement of morphine analgesia in vivo was observed in thirteen out of nineteen AHPA derivatives examined. One of other six AHPA derivatives which showed weak effectiveness in potentiating on morphine analgesia but was highly potent as an enkephalinase inhibitor, caused potent analgesic action when it was applied intracisternally indicating poor penetration of the blood brain barrier. The possibility was discussed that some of other compounds excluded from the linear relationship might act on other enkephalin degrading enzymes such as aminopeptidase.
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Fukatsu S. Industrial chemical synthesis of dideoxykanamycin B. Jpn J Antibiot 1979; 32 Suppl:S178-86. [PMID: 398901] [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: 12/15/2022]
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Fujita M, Mayama T, Abe M, Tomono N, Fukatsu S. [Toxicity, absorption, distribution and excretion of prolinomethyl tetracycline]. Jpn J Antibiot 1972; 25:95-8. [PMID: 4538475] [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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31
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Mayama T, Abe M, Fujita M, Fukatsu S. [Preliminary report on a new tetracycline derivative, prolinomethyl tetracycline]. Jpn J Antibiot 1971; 24:156-9. [PMID: 5314916] [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: 01/14/2023]
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32
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Misato T, Huang KT, Katagiri M, Ueda M, Fukatsu S. Bihoromycin, a new anti-plant-virus antibiotic. J Antibiot (Tokyo) 1967; 20:254-60. [PMID: 5630767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Watanabe S, Matsuhashi G, Fukatsu S, Koyama G, Maeda K, Umezawa H. The studies on the chemical derivations of formycin and formycin B. J Antibiot (Tokyo) 1966; 19:93-6. [PMID: 5952900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Fukatsu S, Umezawa S. Studies on antibiotics and related substances. XX. The synthesis of adenine nucleosides of 3-amino-3-deoxyglucose and 6-amino-6-deoxyglucose. Bull Chem Soc Jpn 1965; 38:1443-7. [PMID: 5831765 DOI: 10.1246/bcsj.38.1443] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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