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MUSTHAFA AHMAD, RYANTO GUSTYRIZKYTEGUH, SURAYA RATOE, NAGANO TATSUYA, SUZUKI YOKO, HARA TETSUYA, HIRATA KENICHI, EMOTO NORIAKI. Acute Amelioration of Inflammatory Activity Caused by Endothelin-2 Deficiency during Acute Lung Injury. Kobe J Med Sci 2023; 69:E96-E105. [PMID: 37941117 PMCID: PMC10695096 DOI: 10.24546/0100483406] [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] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 09/19/2023] [Indexed: 11/10/2023]
Abstract
In acute lung injury (ALI), a severe insult induces a hyperinflammatory state in the lungs. The mortality rate of severe ALI remains high, and novel mechanistic insights are required to improve therapeutic strategies. Endothelin-2 (Edn2), the least studied isoform of endothelin, is involved in lung physiology and development and can be affected by various factors. One of them is inflammation, and another isoform of endothelin, endothelin-1 (Edn1), affects lung inflammatory responses. Considering the importance of Edn2 in the lungs and how Edn2 works through the same receptors as Edn1, we postulated that Edn2 may affect inflammatory responses that are central to ALI pathophysiology. In this study, we performed 24 hours intratracheal lipopolysaccharide (LPS) instillation or PBS control as an in vivo ALI model in eight-week-old conditional Edn2 knockout mice (Edn2-iKO), with Edn2-floxed mice as controls. Bronchoalveolar lavage (BAL) fluid and tissue were collected after exsanguination and analyzed for its cellular, molecular, functional, and histological inflammatory phenotypes. We found that Edn2-iKO mice displayed a reduced pro-neutrophilic inflammatory phenotype even after acute LPS treatment, shown by the reduction in the overall protein concentration and neutrophil count in bronchoalveolar lavage fluids. Further investigation revealed a reduction in mRNA interferon gamma (IFNγ) level of Edn2-iKO lungs and suppression of its downstream signaling, including phosphorylated level of STAT1 and IL-1β secretion, leading to reduced NFĸB activation. To conclude, Edn2 deletion suppressed acute lung inflammation by reducing neutrophil-mediated IFNγ/STAT1/IL-1β/NFĸB signaling cascade. Targeting Edn2 signaling may be beneficial for the development of novel treatment options for ALI.
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Affiliation(s)
- AHMAD MUSTHAFA
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | | | - RATOE SURAYA
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - TATSUYA NAGANO
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - YOKO SUZUKI
- Laboratory of Clinical Pharmaceutical Science, Kobe Pharmaceutical University, Kobe, Japan
| | - TETSUYA HARA
- Laboratory of Clinical Pharmaceutical Science, Kobe Pharmaceutical University, Kobe, Japan
| | - KEN-ICHI HIRATA
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - NORIAKI EMOTO
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
- Laboratory of Clinical Pharmaceutical Science, Kobe Pharmaceutical University, Kobe, Japan
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HISAMATSU ERIKO, NAGAO MANABU, TOH RYUJI, IRINO YASUHIRO, IINO TAKUYA, HARA TETSUYA, TANAKA HIDEKAZU, SATOMI-KOBAYASHI SEIMI, ISHIDA TATSURO, HIRATA KENICHI. Fibronectin-containing High-Density Lipoprotein is Associated with Cancer Cell Adhesion and Proliferation. Kobe J Med Sci 2020; 66:E40-E48. [PMID: 32814756 PMCID: PMC7447102] [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] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 04/10/2020] [Indexed: 06/11/2023]
Abstract
A large amount of evidence suggests that high-density lipoprotein (HDL) has anti-atherosclerotic properties. HDL-cholesterol (HDL-C) has also been widely used as a marker of cardiovascular disease. Recently, it was reported that plasma HDL-C levels are inversely correlated with cancer risk. However, the relationship between HDL and cancer pathophysiology remains unknown. Here, we sought to investigate the effect of HDL on cancer progression. First, we focused on fibronectin-an essential extracellular matrix glycoprotein-as an HDL-associated protein and found that only 7.4% of subjects in this study had fibronectin in HDL isolated from their plasma. The fibronectin-containing HDL (FN-HDL) increased the phosphorylation of focal adhesion kinase (FAK) in HeLa cells compared to HDL without fibronectin, further inducing the phosphorylation in a dose-dependent manner. Second, we found that fibronectin-treated HDL activated the phosphorylation of FAK, and its upstream effector blocked the phosphorylation induced by FN-HDL. Finally, we demonstrated that FN-HDL promoted cancer cell proliferation and adhesion compared to HDL without fibronectin. Our study showed the possible mechanism by which FN-HDL enhanced cancer cell proliferation and adhesion via the FAK signaling pathway. Further investigation of the roles of HDL components in tumorigenesis might provide novel insight into cancer pathophysiology.
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Affiliation(s)
- ERIKO HISAMATSU
- Division of Cardiovascular Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - MANABU NAGAO
- Division of Evidence-based Laboratory Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - RYUJI TOH
- Division of Evidence-based Laboratory Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - YASUHIRO IRINO
- Central Research Laboratories, Sysmex Corporation, Kobe, Japan
| | - TAKUYA IINO
- Central Research Laboratories, Sysmex Corporation, Kobe, Japan
| | - TETSUYA HARA
- Division of Cardiovascular Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - HIDEKAZU TANAKA
- Division of Cardiovascular Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - SEIMI SATOMI-KOBAYASHI
- Division of Cardiovascular Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - TATSURO ISHIDA
- Division of Cardiovascular Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - KEN-ICHI HIRATA
- Division of Cardiovascular Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
- Division of Evidence-based Laboratory Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
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NANISHI E, OHGA S, DOI T, ISHIMURA M, IHARA K, TAKADA H, SHIMA M, HARA T. Complete immunotolerance induction after FEIBA prophylaxis in a haemophilia A patient with high-titre inhibitor. Haemophilia 2012; 18:e75-7. [DOI: 10.1111/j.1365-2516.2012.02776.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Abstract
A 2-dimensional neural network with time delayed connections between neurons is considered. Based on the construction of Liapunov functionals, we obtain sufficient criteria to ensure local and global asymptotic stability of the equilibrium of the neural network.
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Affiliation(s)
- W. MA
- Department of Mathematical Sciences, Osaka Prefecture University, 599-8531 Sakai, Japan
| | - T. HARA
- Department of Mathematical Sciences, Osaka Prefecture University, 599-8531 Sakai, Japan
| | - Y. TAKEUCHI
- Department of Systems Engineering, Shizuoka University, 432-8561 Hamamatsu, Japan
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SAKIYAMA K, ONISHI S, ISHIHARA K, ORITA K, KAJIYAMA T, HOSODA N, HARA T. ChemInform Abstract: Deposition and Properties of Reactively Sputtered Ruthenium Dioxide Films. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/chin.199328038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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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HARA T, FAVALE E, ROSSI GF, SACCO G. Responses in mesencephalic reticular formation and central gray matter evoked by somatic peripheral stimuli. Exp Neurol 1998; 4:297-309. [PMID: 13904511 DOI: 10.1016/0014-4886(61)90056-5] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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HARA T. Structure and function of soluble forms of MCP (CD46). Mol Immunol 1993. [DOI: 10.1016/0161-5890(93)90214-v] [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: 11/27/2022]
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KONDO SI, SEZAKI M, KOIKE M, SHIMURA M, AKITA E, SATOH K, HARA T. DESTOMYCINS A AND B, TWO NEW ANTIBIOTICS PRODUCED BY A STREPTOMYCES. J Antibiot (Tokyo) 1965; 18:38-42. [PMID: 14285470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
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HARA T, NIIDA T, SATO K, KONDO S, NOGUCHI T, KOHMOTO K. A NEW ANTIBIOTIC, CRANOMYCIN. J Antibiot (Tokyo) 1964; 17:266. [PMID: 14236208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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SHOMURA T, INOUE M, NIIDA T, HARA T. THE IMPROVED ASSAY METHOD OF BLASTICIDIN S. J Antibiot (Tokyo) 1964; 17:253-61. [PMID: 14236205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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KONDO S, SEZAKI M, SHIMURA M, SATO K, HARA T. LEUCOPEPTIN, A NEW PEPTIDE ANTIBIOTIC. J Antibiot (Tokyo) 1964; 17:262-3. [PMID: 14236206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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14
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SAKANOUE M, HARA T. [AMINCO-COTLOVE AUTOMATIC CHLORIDE TITRATOR FOR CORNEAL ELECTROLYTE METABOLISM]. Rinsho Ganka 1964; 18:1227-30. [PMID: 14216673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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15
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KONDO SI, SHIMURA M, SEZAKI M, SATO K, HARA T. ISOLATION AND CHARACTERIZATION OF CRANOMYCIN, A NEW ANTIBIOTIC. J Antibiot (Tokyo) 1964; 17:230-3. [PMID: 14236201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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16
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MAEKAWA M, MASHIMOTO Y, SUGIE T, HARA T, WATANABE T. [CASE OF PULMONARY RESECTION FOR ASPERGILLOSIS FORMING A FUNGS BALL]. Kyobu Geka 1964; 17:629-32. [PMID: 14224026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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17
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FUKUSHIMA T, AOKI T, FUJIMORI T, KAWAKAMI K, HARA T, MATSUMOTO T. [ON THE EARLY FIXATION TREATMENT IN TORTICOLLIS IN INFANTS]. Nihon Seikeigeka Gakkai Zasshi 1964; 38:632-4. [PMID: 14217372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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KUBO Y, KABURAGI H, HARA T, HITOSUGI M, SAITO T. [CONSIDERATIONS ON THE EVALUATION OF THE APPLICATION OF REMOVING CARIES IN THE VERTEBRAL BODY]. Nihon Seikeigeka Gakkai Zasshi 1964; 38:563-4. [PMID: 14216563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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HARA T, HATAKEYAMA T, NIIDA T, YUMOTO H, WATANABE T, NOGUCHI T, KHOMOTO K, YASUDA Y. "V-FACTOR" OF STREPTOMYCES ORIGIN, AN EFFECTIVE SUBSTANCE FOR THE CONTROL OF THE BACTERIAL LEAF BLIGHT OF RICE PLANT. J Antibiot (Tokyo) 1964; 17:174. [PMID: 14196287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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HARA T, AMAKI M, HARADA N, OTA S. [CASES OF SUSPECTED CONGENITAL LIVER DISEASES]. Iryo 1964; 18:476-9. [PMID: 14196273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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21
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HARA T. [ON THE EFFECT OF VARIOUS HORMONES ON THE MORTALITY AND NUMBERS OF BACTERIA IN THE ORGANS OF MICE INFECTED WITH MURINE TYPHUS]. Nihon Shonika Gakkai Zasshi 1964; 68:466-72. [PMID: 14175523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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22
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OSHITA T, MORI A, MATSUNAGA T, SHIMIZU K, HARA T, KANEKO U, HISHIDA F, OISHI K. [ANTAGONISTIC ACTION BETWEEN STRYCHININE AND ACETYLCHOLINE UPON THE SPINAL REFLEX]. Showa Igakkai Zasshi 1964; 23:506-9. [PMID: 14205042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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23
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HASHIMOTO I, UEDA Y, HARA T, MIYATA K, YOKOYAMA S. [STATISTICAL OBSERVATIONS ON CANCER OF THE RECTUM IN OUR CLINIC]. Nihon Chokucho Komonbyo 1964; 19:15-6. [PMID: 14153541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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24
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SAITO S, HARA T, WATANABE Y. [CASE OF CILIATED EPITHELIAL CYST OF THE PITUITARY WITH SPONTANEOUS HYPOGLYCEMIA ATTACKS AND KORSAKOW'S SYNDROME]. No To Shinkei 1964; 16:139-46. [PMID: 14126722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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25
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IMAGAWA T, IGUCHI K, INOUE K, SUGIURA G, HARA T, SHIINA M. [CONDUCTIVITY OF THE EXCITATORY WAVE IN THE CARDIAC MUSCLE AT RELATIVE REFRACTORY PERIOD]. Showa Igakkai Zasshi 1963; 23:238-43. [PMID: 14083264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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26
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SUGIURA G, MIYAZAWA T, HISHIDA F, IGUCHII K, IMAGAWA T, HARA T. [ON THE TONIC ACTION OF THE AMPHIBIAN OPTIC LOBE]. Showa Igakkai Zasshi 1963; 23:234-7. [PMID: 14083263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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HARA T, OKADA M. [A CASE OF ACUTE NECROTIZING ENCEPHALITIS. LESIONS IN THE LIMBIC AREAS AND KLUEVER-BUCY'S SYNDROME]. Seishin Shinkeigaku Zasshi 1963; 65:715-25. [PMID: 14083501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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TOKITO S, FUKUMA Y, TAKANO M, YANAGIDA T, MACHINO K, SADANAGA Y, HARA T. [TWO CASES OF GIANT GOITRE FOUND IN THE SAME FAMILY]. Kumamoto Igakkai Zasshi 1963; 37:56-61. [PMID: 14045531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
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29
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HARA T. [Case of clarification of leukomatous corneas in eyes treated by iridectomy]. Rinsho Ganka 1963; 17:45-7. [PMID: 13952684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/24/2023]
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FUKUMA Y, HARA T, SEI K. [Case of cancer of a thoracic wall fistula with pulmonary abscess as a complication]. Kyobu Geka 1962; 15:785-91. [PMID: 13960191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/24/2023]
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31
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TOMIKAWA R, SAKAMOTO K, HARA T. Aspects of the chemotherapy of renal tuberculosis. Kyushu J Med Sci 1962; 13:241-4. [PMID: 13985407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/24/2023]
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32
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HARA T, HARA T. [Midbrain central gray matter in relation to the limbic system]. No To Shinkei 1962; 14:575-9. [PMID: 13904512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/24/2023]
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HARA T, TOKUI T, HARA S. [Experience in the use of gamma-amino-beta-hydroxybutyric acid]. Sogo Igaku 1962; 19:466-7. [PMID: 13904513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/24/2023]
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NAGANO M, UDAGAWA E, HARA T, HONDA S, OHTA M. Synovectomy as a treatment of tuberculosis of the knee: follow-up study and a review of literature. Nihon Seikeigeka Gakkai Zasshi 1962; 35:1245-60. [PMID: 14477884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
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MOMOSE A, HARA T, WAKATSUKI T. [The latest results of the sensitivity test of the bacteria isolated from the pus of the hordeolum. II]. Nihon Ganka Kiyo 1961; 12:955-7. [PMID: 14475298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
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36
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HARA T, HARA T. I7. Mesencephalic Central Gray in Relafion to the Limbic System. Neurol Med Chir (Tokyo) 1961. [DOI: 10.2176/nmc.3.217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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HARA T, FAVALE E, ROSSI GF, SACCO G. [Data favoring the existence of an inhibitory mechanism desynchronizing the electroencephalogram in the deepest stage of sleep. Preliminary note]. Boll Soc Ital Biol Sper 1960; 36:1205-7. [PMID: 13711405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/23/2023]
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38
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HARA T, FAVALE E, ROSSI GF, SACCO G. [Response induced in the reticular substance in the central gray substance of the mesencephalon of the cat by sensitive stimuli of diverse nature. Preliminary note]. Boll Soc Ital Biol Sper 1960; 36:1201-3. [PMID: 13711408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/23/2023]
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39
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HARA T, FAVALE E, ROSSI GF, SACCO G. [Research on cerebral electrical activity in the deepest stage of sleep: depression of the synchronizing thalamic and reticular systems. Preliminary note]. Boll Soc Ital Biol Sper 1960; 36:1203-5. [PMID: 13711407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/23/2023]
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40
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HARA T, TOTSUKA G, SUZUKI J. A study of the vestibulospinal reflex. 1. Electromyographic observation. Yokohama Med Bull 1960; 11:407-14. [PMID: 13711409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/23/2023]
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41
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HARA T, FAVALE E, ROSSI GF, SACCO G. [Research on cerebral electrical activity during sleep in the cat]. Riv Neurol 1960; 30:448-60. [PMID: 13711406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/23/2023]
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Abstract
An apparatus was constructed in order to record continuously and simultaneously changes in extinction and electrical conductance of rhodopsin solutions. With this apparatus, changes in electrical conductance on exposing rhodopsin to light were investigated. On illumination solutions of rhodopsin revealed a conductance change so long as they preserved their photosensitivity. The conductance change begins almost immediately upon illumination and is almost proportional to the amount of rhodopsin decomposed, continuing until rhodopsin is converted to indicator yellow. Near pH 7 the conductance is apt to increase slightly, while it decreases considerably outside the range of pH 6-9, being accompanied by a pH change towards neutrality. The conductance change is regarded as an essential property of rhodopsin, because it occurs in aqueous suspension as well as in digitonin solution; it may be caused by hydrogen or hydroxyl ions and some other conductive substances. It is also noteworthy that the petroleum ether-soluble component of the rod outer segments-presumably the lipide-tends to increase the conductance change. In suspensions of rod outer segments and retinal homogenates, the conductance increases on illumination irrespective of pH: this may be due to secondary reactions following the photic reaction of rhodopsin. We shall discuss the significance of the conductance change in relation to the initiation of visual excitation.
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HARA T, YAMADA Y, AKITA E. Studies on sarkomycin. IV. Preparation of sarkomycin-INAH derivative and its stability. II. J Antibiot (Tokyo) 1957; 10:62-5. [PMID: 13449010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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HARA T, YAMADA Y, AKITA E. Studies on sarkomycin. V. On the nicotinic acid hydrazide derivative of sarkomycin. J Antibiot (Tokyo) 1957; 10:66-9. [PMID: 13449011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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45
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HARA T, YAMADA Y, AKITA E. Studies on sarkomycin. III. On the synthesis of 2-methylcyclopentanone-3-carboxylic acid and its activities. J Antibiot (Tokyo) 1957; 10:80-1. [PMID: 13449014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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AKITA E, HARA T, YAMADA Y. Studies on sarkomycin. VII. Effects of sarkomycin and related compounds on the anaerobic fermentation of Ehrlich ascites carcinoma cells of mice. J Antibiot (Tokyo) 1956; 9:191-2. [PMID: 13385197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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NISHIO T, MATUSHIMA A, KAMEI K, IWASA K, HARA T. An electroencephalographic study of spontaneous convulsion following electroshock therapy. Folia Psychiatr Neurol Jpn 1954; 8:192. [PMID: 13232072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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