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Yoshioka S, Phyu WW, Wagatsuma K, Nagai T, Sano Y, Taniguchi K, Nagata N, Tomimoto K, Sato I, Kaji H, Sugata K, Sugiura K, Saito N, Aoki S, Suzuki E, Shimada Y, Hamabata H, Chon I, Otoguro T, Watanabe H, Saito R. Molecular Epidemiology of Respiratory Syncytial Virus during 2019-2022 and Surviving Genotypes after the COVID-19 Pandemic in Japan. Viruses 2023; 15:2382. [PMID: 38140623 PMCID: PMC10748361 DOI: 10.3390/v15122382] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 12/01/2023] [Accepted: 12/02/2023] [Indexed: 12/24/2023] Open
Abstract
To evaluate the changes in respiratory syncytial virus (RSV) collected between 2019 and 2022, we analyzed RSV-A and RSV-B strains from various prefectures in Japan before and after the COVID-19 pandemic. RT-PCR-positive samples collected from children with rapid test positivity at outpatient clinics in 11 prefectures in Japan were sequenced for the ectodomain of the G gene to determine the genotype. Time-aware phylogeographic analyses were performed using the second hypervariable region (HVR) of the G gene from 2012 to 2022. Of 967 samples, 739 (76.4%) were found to be RSV-positive using RT-PCR. RSV peaked in September 2019 but was not detected in 2020, except in Okinawa. Nationwide epidemics occurred with peaks in July 2021 and 2022. The genotype remained the same, ON1 for RSV-A and BA9 for RSV-B during 2019-2022. Phylogeographic analysis of HVR revealed that at least seven clusters of RSV-A had circulated previously but decreased to two clusters after the pandemic, whereas RSV-B had a single monophyletic cluster over the 10 years. Both RSV-A and RSV-B were transferred from Okinawa into other prefectures after the pandemic. The RSV epidemic was suppressed due to pandemic restrictions; however, pre-pandemic genotypes spread nationwide after the pandemic.
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Grants
- not available Ministry of Education, Culture, Sports, Science and Technology
- 18K10043 Ministry of Education, Culture, Sports, Science and Technology
- 21K10414 Ministry of Education, Culture, Sports, Science and Technology
- 15fm0108009h0001-19fm0108009h005 Japan Agency for Medical Research and Development
- 20wm0125005h001-23wm0125005h004 Japan Agency for Medical Research and Development
- H24-Shinkou-Ippan-014 Ministry of Health, Labour and Welfare, and Sciences, Japan
- H27- Shinkougyousei-Shitei-001 Ministry of Health, Labour and Welfare, and Sciences, Japan
- H30-Shinkougyousei-Shitei-004 Ministry of Health, Labour and Welfare, and Sciences, Japan
- not available Niigata Prefectural Medical Association Grant
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Affiliation(s)
- Sayaka Yoshioka
- Division of International Health (Public Health), Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan; (S.Y.); (W.W.P.); (K.W.); (I.C.)
- Infectious Diseases Research Center of Niigata University (IDRC), Niigata University, Niigata 951-8510, Japan; (T.O.); (H.W.)
| | - Wint Wint Phyu
- Division of International Health (Public Health), Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan; (S.Y.); (W.W.P.); (K.W.); (I.C.)
- University of Medicine, Yangon, Myanmar
| | - Keita Wagatsuma
- Division of International Health (Public Health), Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan; (S.Y.); (W.W.P.); (K.W.); (I.C.)
| | - Takao Nagai
- Nagai Pediatric Clinic, Takamatsu 760-0002, Japan;
| | | | | | - Nobuo Nagata
- Hiraoka-Kouen Pediatric Clinic, Sapporo 004-0872, Japan;
| | | | - Isamu Sato
- Yoiko Pediatric Clinic Sato, Niigata 950-0983, Japan;
| | | | - Ken Sugata
- Mie National Hospital, Tsu 514-0125, Japan; (K.T.); (K.S.)
| | | | - Naruo Saito
- Saito Pediatric Clinic, Moriyama 524-0022, Japan;
| | | | | | | | | | - Irina Chon
- Division of International Health (Public Health), Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan; (S.Y.); (W.W.P.); (K.W.); (I.C.)
| | - Teruhime Otoguro
- Infectious Diseases Research Center of Niigata University (IDRC), Niigata University, Niigata 951-8510, Japan; (T.O.); (H.W.)
| | - Hisami Watanabe
- Infectious Diseases Research Center of Niigata University (IDRC), Niigata University, Niigata 951-8510, Japan; (T.O.); (H.W.)
| | - Reiko Saito
- Division of International Health (Public Health), Graduate School of Medical and Dental Sciences, Niigata University, Niigata 951-8510, Japan; (S.Y.); (W.W.P.); (K.W.); (I.C.)
- Infectious Diseases Research Center of Niigata University (IDRC), Niigata University, Niigata 951-8510, Japan; (T.O.); (H.W.)
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Tonosaki K, Suzuki Y, Yonenaga K, Tomimoto K, Yuzawa K, Oku S, Eto S. Infantile umbilical hernia tape fixation method without compression materials. J Gen Fam Med 2023; 24:223-230. [PMID: 37484134 PMCID: PMC10357089 DOI: 10.1002/jgf2.626] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 04/16/2023] [Accepted: 04/30/2023] [Indexed: 07/25/2023] Open
Abstract
Background Compression therapy using compression material is often used for umbilical hernias in infants; however, there are problems regarding its use, such as appearance and cost. In our hospital, we use the tape fixation method without compression materials. We report the effectiveness of this method, its significance in measuring the degree of hernia bulge before treatment, and parent satisfaction with the treatment. Methods We analyzed 77 cases of umbilical hernias (41 boys and 36 girls, mean age 52.7 ± 18.3 days) that were treated with the tape fixation method at the Department of Pediatrics of our hospital. Hernia size was classified based on the height of the bulge: mild (<1 cm), moderate (1≦ and <3 cm), or severe (>3 cm). Treatment duration was compared between the groups using the Steel-Dwass test. After the treatment, a questionnaire was mailed to the parents to assess the treatment satisfaction. Results Seventy-three patients (94.8%) achieved closure of the hernia orifice, with no excess skin and a well-shaped umbilicus. The duration of treatment was significantly shorter, with the following order: mild (18.5 ± 8.2 days), moderate (25.0 ± 11.9 days), and severe cases (47.8 ± 11.7 days). According to the questionnaire, 97.5% of the parents were satisfied with the treatment. Conclusions Our tape fixation method without compression material achieved a high closure rate and a good shape of the umbilicus. In addition, we noted that the height of the hernia bulge can be used as a guide to estimate the duration of treatment.
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Affiliation(s)
- Kanata Tonosaki
- Department of PediatricsMisawa City HospitalAomoriJapan
- Department of General MedicineTowada City HospitalAomoriJapan
- Department of Eat‐Loss Medicine, Graduate School of MedicineUniversity of TokyoTokyoJapan
| | - Yuki Suzuki
- Department of PediatricsMisawa City HospitalAomoriJapan
| | - Kazumichi Yonenaga
- Department of General MedicineTowada City HospitalAomoriJapan
- Department of Eat‐Loss Medicine, Graduate School of MedicineUniversity of TokyoTokyoJapan
| | | | | | - Shiori Oku
- Department of PediatricsMisawa City HospitalAomoriJapan
| | - Shuji Eto
- Department of PediatricsMisawa City HospitalAomoriJapan
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Kubota M, Ito K, Tomimoto K, Kanazaki M, Tsukiyama K, Kubota A, Kuroki H, Fujita M, Vandenplas Y. Lactobacillus reuteri DSM 17938 and Magnesium Oxide in Children with Functional Chronic Constipation: A Double-Blind and Randomized Clinical Trial. Nutrients 2020; 12:E225. [PMID: 31952280 PMCID: PMC7019518 DOI: 10.3390/nu12010225] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 01/10/2020] [Accepted: 01/12/2020] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVE Chronic functional constipation is a frequent condition. The aim of the study was to evaluate the efficacy of the probiotic Lactobacillus (L.) reuteri DSM 17938 and magnesium oxide (MgO) for relieving chronic functional constipation in children. STUDY DESIGN A prospective, double-blind, placebo-controlled, randomized, and parallel-group trial was conducted in five pediatric outpatient clinics in Japan. Sixty patients who were more than six months old and under six years of age with a diagnosis of functional constipation according to Rome IV criteria were randomly divided into three groups: group A (n = 20) received L. reuteri DSM 17938 and lactose hydrate as a placebo of MgO; group B (n = 19) received L. reuteri DSM 17938 and MgO; and group C (n = 21) received a placebo of L. reuteri DSM 17938 and MgO. RESULTS All three groups exhibited significant improvement in defecation frequency in the fourth week compared with the baseline condition (group A: p < 0.05; group B: p < 0.05; group C: p < 0.05). The MgO group and combination group showed a significant decrease in stool consistency, but the L. reuteri DSM 17938 group did not (group A: p = 0.079; group B: p < 0.05; group C: p < 0.05). MgO significantly suppressed the presence of the genus Dialister. Defecation frequency negatively correlated with the frequency of Clostridiales-belonging bacteria among the gut microbiome. CONCLUSIONS L. rueteri DSM 17938 and MgO were both effective in the management of functional constipation in young children. MgO caused an imbalance in the gastrointestinal microbiome, which was not the case in the probiotic group.
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Affiliation(s)
- Megumi Kubota
- Kubota Children’s Clinic, 2-6-18 Katsuyamakita Ikunoku, Osaka 544-0033, Japan
- Department of Public Health, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi Abenoku, Osaka 545-0051, Japan;
| | - Kazuya Ito
- Department of Public Health, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi Abenoku, Osaka 545-0051, Japan;
| | - Kazuhiko Tomimoto
- Tomimoto Pediatric Clinic, 6-6-20 Minatotakadai, Hachinohe 031-0823, Japan;
| | | | - Kei Tsukiyama
- Tsukiyama Child Care Clinic, 484 Akizuki, Wakayama 640-8322, Japan; (K.T.); (A.K.)
| | - Akio Kubota
- Tsukiyama Child Care Clinic, 484 Akizuki, Wakayama 640-8322, Japan; (K.T.); (A.K.)
| | - Haruo Kuroki
- Sotobo Children’s Clinic, 1880-4 Izumi Misakicho, Isumi 299-4503, Japan;
| | - Mitsugu Fujita
- Department of Microbiology, Kindai University Faculty of Medicine, 377-2 Ohnohigashi, Osakasayama 589-8511, Japan;
| | - Yvan Vandenplas
- KidZ Health Castle, UZ Brussel, Vrije Universiteit Brussel, 1090 Brussels, Belgium;
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Sato T, Suzuki K, Umemura J, Takahashi Y, Tomimoto K. Cor triatriatum with unroofed coronary sinus and persistent left superior vena cava associated with atrial tachycardia. Pediatr Cardiol 2003; 24:520-3. [PMID: 14627330 DOI: 10.1007/s00246-002-0376-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [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: 10/26/2022]
Abstract
A 2-year-old girl with cor triatriatum with unroofed coronary sinus and persistent left superior vena cava underwent preoperative radiofrequency catheter ablation for atrial tachycardia attack that developed after admission to our hospital. The procedure was not successful. Cryoablation was successfully performed during corrective surgery. Cutting back from the coronary sinus orifice, resection of the fibrous tissue above the mitral valvular orifice, closure of the excised fossa ovalis and coronary sinus orifice with a Gore-Tex patch, and ligation of the persistent left superior vena cava resulted in an excellent hemodynamic outcome. At 2-year follow-up, the patient was free from tachycardia attack.
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Affiliation(s)
- T Sato
- Department of Pediatrics, Sakakibara Heart Institute, 2-5-4 Yoyogi, Shibuya-ku, Tokyo 151-0053, Japan
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5
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Mase T, Houpis IN, Akao A, Dorziotis I, Emerson K, Hoang T, Iida T, Itoh T, Kamei K, Kato S, Kato Y, Kawasaki M, Lang F, Lee J, Lynch J, Maligres P, Molina A, Nemoto T, Okada S, Reamer R, Song JZ, Tschaen D, Wada T, Zewge D, Volante RP, Reider PJ, Tomimoto K. Synthesis of a muscarinic receptor antagonist via a diastereoselective Michael reaction, selective deoxyfluorination and aromatic metal-halogen exchange reaction. J Org Chem 2001; 66:6775-86. [PMID: 11578234 DOI: 10.1021/jo0157425] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.5] [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: 12/27/2022]
Abstract
An efficient synthesis of a structurally unique, novel M(3) antagonist 1 is described. Compound 1 is conveniently disconnected retrosynthetically at the amide bond to reveal the acid portion 2 and the amine fragment 3. The synthesis of key intermediate 2 is highlighted by a ZnCl(2)-MAEP complex 19 catalyzed diastereoselective Michael reaction of dioxolane 7 with 2-cyclopenten-1-one (5) to establish the contiguous quaternary-tertiary chiral centers and a subsequent geminal difluorination of ketone 17 using Deoxofluor in the presence of catalytic BF(3).OEt(2). The synthesis of the amine moiety 3 is highlighted by the discovery of a novel n-Bu(3)MgLi magnesium-halogen exchange reaction for selective functionalization of 2,6-dibromopyridine. This new and practical metalation protocol obviated cryogenic conditions and upon quenching with DMF gave 6-bromo-2-formylpyridine (26) in excellent yield. Further transformations afforded the amine fragment 3 via reductive amination with 35, Pd-catalyzed aromatic amination, and deprotection. Finally, the highly convergent synthesis of 1 was accomplished by coupling of the two fragments. This synthesis has been used to prepare multi-kilogram quantities of the bulk drug.
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Affiliation(s)
- T Mase
- Process R & D, Laboratories for Technology Development, Banyu Pharmaceutical Co. Ltd., Kamimutsuna 3-Chome-9-1, Okazaki, Aichi 444-0858, Japan.
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6
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Mizokawa T, Kim C, Shen ZX, Ino A, Yoshida T, Fujimori A, Goto M, Eisaki H, Uchida S, Tagami M, Yoshida K, Rykov AI, Siohara Y, Tomimoto K, Tajima S, Yamada Y, Horii S, Yamada N, Yamada Y, Hirabayashi I. Angle-resolved photoemission study of insulating and metallic Cu-O chains in PrBa2Cu3O7 and PrBa2Cu4O8. Phys Rev Lett 2000; 85:4779-4782. [PMID: 11082650 DOI: 10.1103/physrevlett.85.4779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2000] [Indexed: 05/23/2023]
Abstract
We compare the angle-resolved photoemission spectra of the hole-doped Cu-O chains in PrBa2Cu3O7 (Pr123) and in PrBa2Cu4O8 (Pr124). While, in Pr123, a dispersive feature from the chain takes a band maximum at k(b) (momentum along the chain) approximately pi/4 and loses its spectral weight around the Fermi level, it reaches the Fermi level at k(b) approximately pi/4 in Pr124. Although the chains in Pr123 and Pr124 are approximately 1/4 filled, they show contrasting behaviors: While the chains in Pr123 have an instability to charge ordering, those in Pr124 avoid it and show an interesting spectral feature of a metallic coupled-chain system.
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Affiliation(s)
- T Mizokawa
- Department of Complexity Science and Engineering, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan and Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
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7
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Tanaka H, Waga S, Tateyama T, Nakahata T, Ito T, Sugimoto K, Kakizaki Y, Tomimoto K, Yokoyama M. Interstitial cystitis and ileus in pediatric-onset systemic lupus erythematosus. Pediatr Nephrol 2000; 14:859-61. [PMID: 10955946 DOI: 10.1007/s004679900285] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [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: 10/27/2022]
Abstract
A girl aged 11 years presented with autoimmune hemolytic anemia with thrombocytopenia, and subsequently developed severe abdominal pain, vomiting, and pollakiuria. X-ray findings of her abdomen demonstrated paralytic ileus with intestinal wall thickening. Intravenous pyelography revealed bilateral hydroureter with mild hydronephrosis and contracted bladder. Pathological examination of her bladder revealed interstitial cystitis, with evidence of focal deposition of IgG and C3 in a granular pattern on small blood vessel walls. She was diagnosed as having systemic lupus erythematosus (SLE) associated with paralytic ileus and chronic interstitial cystitis. Although initiation of high-dose prednisolone therapy resulted in a gradual improvement in clinical symptoms, reducing the dosage of prednisolone caused a relapse. To our knowledge, the combination of paralytic ileus and chronic interstitial cystitis is quite uncommon in pediatric-onset SLE.
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Affiliation(s)
- H Tanaka
- Department of Pediatrics, Hirosaki University, School of Medicine, Japan.
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8
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Mitsuya M, Mase T, Tsuchiya Y, Kawakami K, Hattori H, Kobayashi K, Ogino Y, Fujikawa T, Satoh A, Kimura T, Noguchi K, Ohtake N, Tomimoto K. J-104129, a novel muscarinic M3 receptor antagonist with high selectivity for M3 over M2 receptors. Bioorg Med Chem 1999; 7:2555-67. [PMID: 10632066 DOI: 10.1016/s0968-0896(99)00177-7] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.7] [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: 10/16/2022]
Abstract
A new class of 4-acetamidopiperidine derivatives has been synthesized and investigated for human muscarinic receptor subtype selectivity. Introduction of a hydrocarbon chain of appropriate length into the piperidine nitrogen of the racemic N-(piperidin-4-yl)-2-cyclobutyl-2-hydroxy-2-phenylacetamide platform conferred up to 70-fold selectivity for human muscarinic M3 receptors over M2 receptors. Subsequent synthetic derivatizations resulted in highly potent M3 receptor antagonists with selectivity greater than two orders of magnitude for M3 over M2 receptors, from which the analogue 4r was selected. Preparation of both enantiomers of 4r led to the identification of (2R)-N-[1-(4-methyl-3-pentenyl)piperidin-4-yl]-2-cyclopentyl-2-hyd roxy-2-phenylacetamide (J-104129, (R)-4r), which exhibited 120-fold selectivity for M3 receptors (Ki = 4.2 nM) over M2 receptors (Ki = 490 nM). In isolated rat trachea, (R)-4r potently and specifically antagonized acetylcholine (ACh)-induced responses with a K(B) value of 3.3 nM. The highly subtype-selective profile was also seen in isolated rat tissue assays (50-fold) and in anesthetized rats (> 250-fold). Oral administration of J-104129 ((R)-4r) antagonized ACh-induced bronchoconstriction with an ED50 value of 0.58 mg/kg in rats. Thus, J-104129 ((R)-4r) may effectively facilitate bronchodilation in the treatment of obstructive airway disease.
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Affiliation(s)
- M Mitsuya
- Banyu Tsukuba Research Institute in collaboration with Merck Research Laboratories, Ibaraki, Japan
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9
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Yonemoto M, Satoh T, Arakawa H, Suzuki-Takahashi I, Monden Y, Kodera T, Tanaka K, Aoyama T, Iwasawa Y, Kamei T, Nishimura S, Tomimoto K. J-104,871, a novel farnesyltransferase inhibitor, blocks Ras farnesylation in vivo in a farnesyl pyrophosphate-competitive manner. Mol Pharmacol 1998; 54:1-7. [PMID: 9658183 DOI: 10.1124/mol.54.1.1] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [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: 11/22/2022] Open
Abstract
Farnesylation of the activated ras oncogene product by protein farnesyltransferase (FTase) is a critical step for its oncogenic function. Because squalene synthase and FTase recruit farnesyl pyrophosphate as a common substrate, we modified squalene synthase (SS) inhibitors to develop FTase inhibitors. Among the compounds tested, a novel FTase inhibitor termed J-104,871 inhibited rat brain FTase with an IC50 of 3.9 nM in the presence of 0.6 microM farnesyl pyrophosphate (FPP), whereas it scarcely inhibited rat brain protein geranylgeranyltransferase-I or SS. The in vitro inhibition of rat brain FTase by J-104,871 depends on the FPP concentration but not on the concentration of Ras peptide. Thus, in vitro studies strongly suggest that J-series compounds have an FPP-competitive nature. J-104,871 also inhibited Ras processing in activated H-ras-transformed NIH3T3 cells with an IC50 value of 3.1 microM. We tested the effects of lovastatin and zaragozic acid A, which modify cellular FPP levels, on Ras processing of J-104,871. Lovastatin, a hepatic hydroxymenthyl coenzyme A reductase inhibitor that reduced the cellular FPP pool, increased the activity of J-104,871, whereas 3 microM zaragozic acid A, an SS inhibitor that raised the FPP level, completely abrogated the activity of J-104,871 even at 100 microM. These results suggest that J-104,871 inhibits FTase in an FPP-competitive manner in whole cells as well as in the in vitro system. Furthermore, J-104,871 suppressed tumor growth in nude mice transplanted with activated H-ras-transformed NIH3T3 cells.
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Affiliation(s)
- M Yonemoto
- Tsukuba Research Institute, Banyu Pharmaceutical, Ltd., Tsukuba, 300-2611 Japan.
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Aoyama T, Satoh T, Yonemoto M, Shibata J, Nonoshita K, Arai S, Kawakami K, Iwasawa Y, Sano H, Tanaka K, Monden Y, Kodera T, Arakawa H, Suzuki-Takahashi I, Kamei T, Tomimoto K. A new class of highly potent farnesyl diphosphate-competitive inhibitors of farnesyltransferase. J Med Chem 1998; 41:143-7. [PMID: 9457237 DOI: 10.1021/jm970540f] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- T Aoyama
- Drug Discovery Research Laboratory, Tsukuba Research Institute, Banyu Pharmaceutical Co. Ltd., Japan
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Abstract
Accurate electron density analyses have been performed on the title compound, yttrium titanate, at room and low temperature using W K\alpha radiation. Room- and low temperature \delta\rho maps are generally consistent. Difference electron densities near the two symmetrically independent O atoms differ markedly. These observations may have significance for understanding the role of the O atom in mediating d-electron interactions between neighbouring Ti coordination polyhedra. Features having lower symmetry than that of the approximately octahedral local environment are observed within the Ti coordination octahedron. Crystal data at room temperature: YTiO3, M
r
= 184.79, T = 293 K, Pnma, a = 5.6901 (4), b = 7.6130 (7), c = 5.3381 (6) Å, V = 231.24 (4) Å3, Z = 4, D
x
= 5.308 Mg m-3, \mu(W K\alpha) = 1.02 mm−1, R = 0.024, wR = 0.017, S = 1.64 (2) for 2996 independent reflections. Low temperature: T = 127 K, Pnma, a = 5.690 (4), b = 7.583 (6), c = 5.318 (5) Å, V = 229.5 (3) Å3, D
x
= 5.35 Mg m−3, \mu(W K\alpha) = 1.02 mm−1, R = 0.021, wR = 0.015, S = 1.80 (2) for 2968 independent reflections.
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Yonesaka S, Takahashi T, Tomimoto K, Kinjo M, Sunagawa Y, Sato S, Nakada T, Matubara T, Oura H, Koda M, Furukawa H. Clinical and histopathological studies in children with supraventricular tachycardia. Jpn Circ J 1996; 60:560-6. [PMID: 8889658 DOI: 10.1253/jcj.60.560] [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] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
To determine whether myocardial changes in patients with supraventricular tachycardia (SVT) are primary or secondary to persistent tachycardia, 11 patients with SVT were studied. These patients were divided into 2 groups with respect to the type of SVT. Group I consisted of 5 patients with incessant SVT and one with multifocal atrial tachycardia, while group II consisted of 4 patients with paroxysmal supraventricular tachycardia and one with short-run supraventricular premature contraction. All of the patients underwent electrophysiological study and endomyocardial biopsy from the right ventricle following routine cardiac catheterization. In group II, there were no significant abnormalities in the clinical and hemodynamic parameters. In group I, 3 patients had clinical features of dilated cardiomyopathy including abnormal ECG, chest X-ray and hypokinesis on left ventriculography. Induction and termination of SVT were possible in 2 patients in group I and in 4 of the 5 patients in group II. The only significant histologic difference between group I and group II was fibrosis. A high incidence of histopathological abnormalities, such as hypertrophy, degeneration, interstitial fibrosis and disarray was observed in both groups. The incidence of significant pathology was higher in group I than in group II. Almost all of the patients were given antiarrhythmic drugs. One patient underwent a successful surgical procedure and normal cardiac function returned after resection of the foci of the right atrium. Our present results suggest that patients with SVT who have incessant or recurrent SVT should undergo not only intracardiac electrophysiologic study but also endomyocardial biopsy for the evaluation of myocardial damage, since SVT might be the initial sign of cardiomyopathy.
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Affiliation(s)
- S Yonesaka
- Department of Pediatrics, Hirosaki University School of Medicine, Japan
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Yonesaka S, Tomimoto K, Takahashi T, Furukawa H, Oura H. Clinical studies on long-standing Kawasaki disease with special reference to myocardial changes using endomyocardial biopsy. Progress in Pediatric Cardiology 1992. [DOI: 10.1016/s1058-9813(06)80037-8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Yonesaka S, Takahashi T, Matubara T, Nakada T, Furukawa H, Tomimoto K, Oura H. Histopathological study on Kawasaki disease with special reference to the relation between the myocardial sequelae and regional wall motion abnormalities of the left ventricle. Jpn Circ J 1992; 56:352-8. [PMID: 1578606 DOI: 10.1253/jcj.56.352] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Thirty-eight consecutive patients with Kawasaki disease (18 patients with normal coronary artery and 20 with coronary artery lesions) were studied in order to find the incidence of myocardial abnormalities and the influence of the myocardial damage on the regional wall motion of the left ventricle in patients with Kawasaki disease with or without coronary artery lesion. Abnormal regional wall motion of the left ventricle was found in 28% of the patients with normal coronary artery (NCA) and in 55% of those with coronary artery lesions (CAL). Hypertrophy of myocytes, degeneration of myocytes and disarray were found frequently in the patients with CAL. The histopathology of endomyocardial biopsy taken from patients more than 3 years after disease onset and less than 3 years after onset were compared. Histopathologic abnormalities were found even in the biopsies taken more than 3 years after onset, especially from patients with coronary artery lesions, although the incidence of abnormalities was less frequent. We consider that repeat endomyocardial biopsies may be necessary in the patients who have significant histopathologic changes in the first endomyocardial biopsy to clarify the natural course of myocardial abnormalities, regardless of whether or not they have CAL.
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Affiliation(s)
- S Yonesaka
- Department of Pediatrics, Hirosaki University School of Medicine, Aomori Prefecture
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15
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Yonesaka S, Takahashi T, Furukawa H, Matubara T, Tomimoto K, Oura H, Nakada T, Sunagawa Y. [Histopathological analysis of myocardial damages following Kawasaki disease with repeated endomyocardial biopsy]. Kokyu To Junkan 1992; 40:375-81. [PMID: 1570427] [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] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Since Kawasaki disease was first reported 20 years ago, many investigations about cardiac complications and treatment have been carried out. However, etiology still remains unknown. Although many studies focused on coronary artery lesions (CAL) have been reported, there have been only a few reports of pathological studies on myocardial after-effects of Kawasaki disease using endomyocardial biopsy. In order to investigate the myocardial sequelae, repeated coronary arteriography and endomyocardial biopsy were performed in thirteen patients of Kawasaki disease with coronary artery lesions. Their ages ranged from 19 months to 12 years in the first study, 4 years to 15 years in the second study, and the male to female ratio was 8:5. In this study the interval between the first study and the second one was more than two years and six months. In the second study, progression of the CAL was noticed in 23% of the cases. It was unchanged in 54%, and regression was observed in 23%. Twenty-three percent of the patients were found to have an ejection fraction of less than 55%, and abnormal regional wall motion was found in 62% of the patients. Myocardial changes in the second endomyocardial biopsy were interstitial fibrosis in 62%, degeneration in 54%, disarray in 32% and inflammatory cell infiltration in 23%. One of the cases with Kawasaki disease, who had mild CAL, revealed massive inflammatory cell infiltration and myocytolysis in the second study performed seven years after onset, which suggested chronic myocarditis. Myocardial changes in the patients with advanced CAL were relatively mild, and low EF and abnormal regional wall motion were not always related to severity of CAL.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- S Yonesaka
- Department of Pediatrics, Hirosaki University School of Medicine
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16
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Nakada T, Yonesaka S, Sunagawa Y, Tomimoto K, Takahashi T, Matsubara T, Furukawa H, Kamimura K, Naka S. Coronary arterial calcification in Kawasaki disease. Acta Paediatr Jpn 1991; 33:443-9. [PMID: 1792902 DOI: 10.1111/j.1442-200x.1991.tb02569.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The purpose of this paper is to describe the clinical characteristics and significance of the coronary arterial calcification due to Kawasaki disease (KD), based on our five patients. The coronary arterial lesions (CAL) were in segments 1, 2, 5, 6 and 11 according to the classification of the American Heart Association. The interval from the onset to the first appearance of coronary calcification was 17 months to 61 months. Progression of CAL into coronary arterial stenosis or myocardial infarction occurred in all five patients. In the comparative study between the patients with calcified CAL and those with non-calcified CAL, the maximal size of CAL of the former was 8 mm or larger in contrast with that of the latter (less than 8 mm). It is concluded that coronary arterial calcification is one of the important signs which suggest the presence of the advanced CAL in the follow-up of children with a history of KD.
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Affiliation(s)
- T Nakada
- Department of Pediatrics, Hirosaki University School of Medicine, Japan
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17
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Yonesaka S, Takahashi T, Matubara T, Furukawa H, Tomimoto K, Sekigami I, Shiota T, Nakada T, Sunagawa Y, Yoshida S. [Clinical investigation on the patients with tachyarrhythmic syncope with special reference to comparative study between long QT syndrome and ventricular tachycardia without long QT interval]. Kokyu To Junkan 1991; 39:457-63. [PMID: 2068405] [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] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The long QT syndrome (LQTS) is one of the important diseases that may lead to sudden death mainly in childhood, however etiology and pathogenesis are still poorly understood. The group studied consisted of 6 patients with a history of ventricular tachyarrhythmic syncope, 3 with long QT syndrome (LQTS) and 3 without long QT interval, and of 4 patients with ventricular tachycardia without syncopal episode. Their ages ranged from 5 years to 17 years. Histopathology of endomyocardial biopsy was nonspecific and mild in two cases but in one patient with LQTS, who had several episodes of syncope and refractory ventricular arrhythmia, remarkable subendocardial fibrosis, interstitial fibrosis and hypertrophy of myocytes were demonstrated. As far as ventricular tachycardia without long QT interval was concerned, in the patients with VT with syncope, histopathological abnormalities were more remarkable than in those without syncope. Electrophysiological findings in the patients with LQTS showed no characteristic findings, but only mild abnormalities with functional atrioventricular conduction disturbance on programmed atrial pacing. No inducible VT was demonstrated. Although electrophysiologic study and endomyocardial biopsy are of limited value, such studies are considered to be worthwhile for treating ventricular arrhythmias, and making a prognosis of the patients with tachyarrhythmic syncope and LQTS.
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Affiliation(s)
- S Yonesaka
- Department of Pediatrics, Hirosaki University School of Medicine
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18
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Yonesaka S, Nakada T, Sunagawa Y, Takahashi T, Matubara T, Sekigami I, Shiota T, Sashinami T, Tomimoto K, Furukawa H. [Clinical investigation on childhood HCM; long-term follow-up study with special reference to electrophysiology, histopathology by endomyocardial biopsy and ambulatory and exercise electrocardiography]. Kokyu To Junkan 1990; 38:677-82. [PMID: 2402570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In order to determine the prognosis and risk factors of childhood HCM, we investigated clinical parameters, such as the age of onset, symptoms and signs related to HCM, dysrhythmias and ST-T and changes by Holter ECG and exercise ECG, electrophysiological study and histopathological study by endomyocardial biopsy. Heart murmur was the commonest sign although only one patient revealed a significant left ventricular outflow tract gradient of more than 20 mmHg. The peak age of patients diagnosed as having HCM was 10 to 15 years. The major ECG manifestations of our series showed specific findings and in some cases ECG changed remarkably during the follow-up period. The diagnosis of apical hypertrophy should be made with caution in childhood. Holter ECG seemed to be indispensable for the follow-up of childhood HCM because Holter ECG in our patients manifested such significant findings as ventricular premature contractions or couplets or ST depression. The degree of clinical severity did not always correlate with the histopathological severity obtained by endomyocardial biopsy. As HCM in childhood is heterogeneous and multifaceted, there is no one therapy, and prognosis and proper treatment with close observation should be carried out in each individual case.
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Affiliation(s)
- S Yonesaka
- Department of Pediatrics, Hirosaki University School of Medicine
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19
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Yonesaka S, Nakada T, Sunagawa Y, Tomimoto K, Naka S, Takahashi T, Matubara T, Sekigami I. Endomyocardial biopsy in children with Kawasaki disease. Acta Paediatr Jpn 1989; 31:706-11. [PMID: 2516398 DOI: 10.1111/j.1442-200x.1989.tb01384.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
To study the histopathology of the myocardium in Kawasaki Disease (KD) with various coronary angiographic findings, right endomyocardial biopsy specimens were evaluated on 20 boys and 16 girls with this disorder. KD with coronary artery lesions (CAL) showed various histopathological abnormalities, such as myocellular hypertrophy in 44%, degeneration in 61%, interstitial fibrosis in 44% and endomyocardial changes in 22%. KD without CAL revealed myocellular hypertrophy in 44%, degeneration in 50%, disarray in 28% and interstitial fibrosis in 6%. As in patients with long-standing KD, more than three years after onset, myocardial changes such as myocellular hypertrophy, disarray and interstitial fibrosis persisted, it is suggested that cardiomyopathy may develop in some patients with KD.
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20
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Ihara M, Tsuchiya Y, Sawasaki Y, Hisaka A, Takehana H, Tomimoto K, Yano M. A new potential prodrug to improve the duration of L-dopa: L-3-(3-hydroxy-4-pivaloyloxyphenyl)alanine. J Pharm Sci 1989; 78:525-9. [PMID: 2778650 DOI: 10.1002/jps.2600780703] [Citation(s) in RCA: 19] [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: 01/02/2023]
Abstract
L-3-(3-Hydroxy-4-pivaloyloxyphenyl)alanine (1, NB-355) is a novel L-dopa prodrug. After oral administration with carbidopa in rats, 1 demonstrated 2.3 times longer duration (MRT) and 1.4 times larger bioavailability (AUC) on plasma L-dopa concentrations than those of L-dopa itself. Similar results were obtained in dogs. The prolonged profile of L-dopa was parallel to that of carbidopa, and the intact ester was undetectable in rat plasma. After intravenous administration in rats, 1 was converted quickly and completely to L-dopa in the systemic circulation. It was also noted that the oral LD50 value of 1 was greater than 6 g/kg in mice. These data suggest that 1 will offer long-lasting L-dopa therapy for the treatment of Parkinson's disease with little concern about toxicity.
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Affiliation(s)
- M Ihara
- Central Research Laboratories, Banyu Pharmaceutical Company, Ltd., Tokyo, Japan
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21
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Yonesaka S, Nakata T, Sunagawa K, Tomimoto K, Matubara T, Takahashi T, Naka S, Furukawa H. [Electrophysiologic and histopathologic investigations in children with idiopathic ventricular arrhythmias]. Kokyu To Junkan 1989; 37:195-9. [PMID: 2727407] [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: 01/02/2023]
Abstract
Between April 1984 and December 1987, electrophysiological studies and endomyocardial biopsy were performed in 14 pediatric patients, aged from 7 to 15 years, with idiopathic ventricular arrhythmias in whom diagnostic evaluation had revealed no structural heart disease. They were 8 boys and 6 girls. Cardiac catheterization revealed regional wall motion abnormalities of the left ventricle in 3 patients, one of whom showed decreased ejection fraction (EF). Electrophysiologic examination showed sinus node dysfunction in 21%. AV nodal dysfunction in 14% and dual AV nodal pathway in 21%. Histopathologic examination by endomyocardial biopsy showed myocellular hypertrophy, degeneration of myocytes, interstitial fibrosis and endomyocardial thickness in 86%, 36%, 35% and 14%, respectively. Since idiopathic ventricular arrhythmias in pediatric age group included relatively high electrophysiologic and histopathologic abnormalities, which were suggestive of occult myocardial disease and might be the early stage of cardiomyopathy, careful follow-up should be required.
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22
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Yonesaka S, Nakata T, Sunagawa Y, Tomimoto K, Naka S, Takahashi T, Matsubara T, Furukawa H. [Histopathological examination of endomyocardial biopsy in the cases of supraventricular tachycardia in children]. Kokyu To Junkan 1988; 36:1221-5. [PMID: 3247540] [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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23
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Kishimoto C, Kaburagi T, Takayama S, Yokoyama S, Hanyu I, Takatsu Y, Tomimoto K. Two forms of hypertrophic cardiomyopathy distinguished by inheritance of HLA haplotypes and left ventricular outflow tract obstruction. Am Heart J 1983; 105:988-94. [PMID: 6683070 DOI: 10.1016/0002-8703(83)90401-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
In this study we have performed human leukocyte antigen (HLA)-A and B typing on nine patients with hypertrophic cardiomyopathy (HCM) and their relatives. Four patients had relatives who also had the disease. HLA typing of the familial form of HCM revealed a very close association of a given HLA-A,B haplotype with the occurrence of the disease. All four patients who had affected relatives had obstruction of left ventricular outflow (LVOT), while four patients with unaffected relatives did not have obstruction. One additional patient with obstruction and without familial incidence was an only child and had few living relatives. Thus, HCM can be divided into two subtypes: a familial form linked to the HLA-A,B system, which may be related to obstructive type, and a sporadic form not linked to HLA antigens. These data confirm the existence of at least two separate forms of hypertrophic cardiomyopathy. The study also confirms their existence in the Japanese population, with a completely different gene pool than the population from the southeastern United States in whom the observation was initially described.
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24
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Yoshida K, Abe R, Akiyoshi T, Tsuji H, Tomimoto K, Kadota T. [High serum ferritin levels in malignant lymphoma of the ileum]. Gan No Rinsho 1983; 29:458-62. [PMID: 6876412] [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: 01/22/2023]
Abstract
A 61-year-old woman was admitted to our hospital with lower abdominal distension, anemia and slight emaciation. Primary malignant lymphoma of the ileum was diagnosed after laparotomy and palliative surgery was performed. Pathological specimens demonstrated diffuse lymphoma, and histiocytic (Rappaport's classification) aneurysm-type macroscopic development. The preoperative serum ferritin level was high and increased postoperatively with a slight decrease during VEMP chemotherapy, suggesting it to be a marker of tumor activity. Although palliation was observed during chemotherapy, this patient died of pulmonary complications a little less than 3 months after the operation.
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25
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Tanaka S, Yamada K, Ito T, Kita K, Adachi M, Nasu K, Yokoyama S, Tomimoto K, Shirakawa S. [Seven cases of T-cell malignancy in Shizuoka district]. Rinsho Ketsueki 1982; 23:708-14. [PMID: 6982354] [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: 01/22/2023]
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26
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Kishimoto C, Fujiwara H, Kaburagi T, Yokoyama S, Takayama S, Tomimoto K, Taneichi Y, Matsumoto S, Murakami T. Familial congestive cardiomyopathy with positive rheumatoid factor. Report of one family. Jpn Circ J 1982; 46:303-309. [PMID: 7199594 DOI: 10.1253/jcj.46.303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Three members of one family had cardiomyopathy of the congestive type. Autopsies of 2 brothers revealed marked dilatation of the left ventricle with diffuse interstitial fibrosis of unknown origin. The father's diagnosis was based on clinical findings. In one brother, a positive latex fixation test for rheumatoid factor had been documented when he were healthy. Another brother had a positive test for rheumatoid factor almost simultaneously with the onset of the disease. It remained positive until both died. Thus, the positive rheumatoid factor presumably reflected primary or independent immunologic defects rather than a secondary immunologic mechanism in these cases of familial congestive cardiomyopathy.
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27
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Abstract
Two cases of brothers with congenital hydrocephalus and clasped thumbs are reported. In consideration of the rare incidence of sporadic congenital hydrocephalus, hereditary origin of these cases based on X-linked recessive inheritance was suspected. Serial sectioning of the brain stem revealed stenosis and abnormal dorso-ventral elongation of the aqueduct. These findings support the postulation of Landrieu et al that the primary defect in X-linked hereditary hydrocephalus is a communicating hydrocephalus leading usually to aqueductal stenosis in consequence of lateral compression of the brain stem.
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28
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Kaburagi T, Yokoyama S, Tanaka K, Haniu T, Suzuki T, Mithunami K, Takayama S, Oguma S, Hatori T, Kishimoto T, Tomimoto K. [The fibrinolytic therapy in renal disease (author's transl)]. Nihon Jinzo Gakkai Shi 1980; 22:59-79. [PMID: 6991744] [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: 01/22/2023]
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29
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Hanaoka M, Sasaki M, Matsumoto H, Tankawa H, Yamabe H, Tomimoto K, Tasaka C, Fujiwara H, Uchiyama T, Takatsuki K. Adult T cell leukemia. Histological classification and characteristics. Acta Pathol Jpn 1979; 29:723-38. [PMID: 315153 DOI: 10.1111/j.1440-1827.1979.tb00940.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Adult T cell leukemia was classified into two distinct types, monomorphic and pleomorphic, according to their histological and cytological features. The former type is composed of uniform neoplastic cells with round or slightly indented nuclei without any marked deformation. The latter type, on the other hand, occupies a unique position in lymphocytic leukemias with the following characteristics: a) onset in adulthood, b) an acute and subacute course, c) well-differentiated T cell origin of the neoplastic cells, d) pleomorphism of the neoplastic cells with markedly deformed nuclei, e) diffuse proliferation of the neoplastic cells without nodular pattern, f) histologically heterogeneous features of lymph nodes frequently admixing a cluster of normal lymphocytes, proliferation of macrophages and dendritic cells, and well-developed high endothelium venules, g) high incidence of skin lesions due to the infiltration of neoplastic cells, and h) exclusively limited localization of patients' birth places.
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30
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Ozaki T, Handa H, Tomimoto K, Hazama F. Anatomical variations of the arterial system of the base of the brain. Nihon Geka Hokan 1977; 46:3-17. [PMID: 561574] [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: 12/23/2022]
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31
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Hazama F, Ooshima A, Tanaka T, Tomimoto K, Okamoto K. Vascular lesions in the various substrains of spontaneously hypertensive rats and the effects of chronic salt ingestion. Jpn Circ J 1975; 39:7-22. [PMID: 1127829 DOI: 10.1253/jcj.39.7] [Citation(s) in RCA: 39] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Among different races, countries and districts there are definite differences in incidence of hypertensive vascular diseases, for example cerebral bleeding. Hereditary and dietary factors presumably play significant roles. Experimental studies under controlled conditions and utilizint suitable animals are indispensable for analysis of the related factors. For confirmation, hypertensive vascular changes in the spontaneously hypertensive rats were histopathologically studied and related to the difference of substrains. Dietary effects of sodium chloride on these vascular changes were investigated by providing the animals with 1% saline for drinking.
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32
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Yamori Y, Tomimoto K, Ooshima A, Hazama F, Okamoto K. Proceedings: Developmental course of hypertension in the SHR-substrains susceptible to hypertensive cerebrovascular lesions. Jpn Heart J 1974; 15:209-10. [PMID: 4546183 DOI: 10.1536/ihj.15.209] [Citation(s) in RCA: 38] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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