1
|
Kakutani N, Fukushima A, Yokota T, Katayama T, Nambu H, Shirakawa R, Maekawa S, Abe T, Takada S, Furihata T, Okita K, Kinugawa S, Anzai T. P6057High respiratory exchange ratio during submaximal exercise predicts adverse clinical outcomes in patients with heart failure. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6057] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- N Kakutani
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - A Fukushima
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - T Yokota
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - T Katayama
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - H Nambu
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - R Shirakawa
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - S Maekawa
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - T Abe
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - S Takada
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - T Furihata
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - K Okita
- Hokusho University, Graduate School of Lifelong Sport, Ebetsu, Japan
| | - S Kinugawa
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - T Anzai
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| |
Collapse
|
2
|
Nambu H, Takada S, Fukushima A, Matsumoto J, Kakutani N, Maekawa S, Shirakawa R, Furihata T, Nakajima T, Katayama T, Tsuda M, Saito A, Yokota T, Kinugawa S, Anzai T. P4774Empagliflozin improves exercise endurance via the activation of fatty acid oxidation in the skeletal muscle in murine model of post-infarct heart failure. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4774] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- H Nambu
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - S Takada
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - A Fukushima
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - J Matsumoto
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - N Kakutani
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - S Maekawa
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - R Shirakawa
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - T Furihata
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - T Nakajima
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - T Katayama
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - M Tsuda
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - A Saito
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - T Yokota
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - S Kinugawa
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - T Anzai
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| |
Collapse
|
3
|
Shirakawa R, Yokota T, Nakajima T, Takada S, Yamane M, Furihata T, Matsumoto J, Tsuda M, Katayama T, Maekawa S, Nambu H, Fukushima A, Saito A, Kinugawa S, Anzai T. 3143Excessive mitochondrial reactive oxygen species emission from circulating blood cells is associated with severity of heart failure and exercise intolerance. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.3143] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- R Shirakawa
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - T Yokota
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - T Nakajima
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - S Takada
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - M Yamane
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - T Furihata
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - J Matsumoto
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - M Tsuda
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - T Katayama
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - S Maekawa
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - H Nambu
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - A Fukushima
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - A Saito
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - S Kinugawa
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - T Anzai
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| |
Collapse
|
4
|
Sun Y, Woess K, Wimmer M, Zauner R, Feinle A, Wally V, South A, Furihata T, Piñón Hofbauer J, Gruber C. 561 Extracellular vesicles as biomarkers for the detection of epidermolysis bullosa-associated squamous cell carcinoma. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
5
|
Nakajima T, Yokota T, Shingu Y, Yamada A, Iba Y, Ujihara K, Takada S, Shirakawa R, Furihata T, Tsuda M, Matsumoto J, Fukushima A, Matsui Y, Kinugawa S. P700Mitochondrial dysfunction in epicardial adipose tissue; possible role in progression of coronary artery disease. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p700] [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: 11/12/2022] Open
|
6
|
Fukushima Y, Takeda A, Matsutani T, Fukushima F, Furihata T, Maezawa R, Miyoshi M, Hirata H, Sugiyama K, Okada M, Fukuda T. Involvement of antigen-driven mechanisms in interstitial pneumonia with polymyositis. Rheumatology (Oxford) 2013; 52:1537-40. [DOI: 10.1093/rheumatology/ket003] [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: 11/12/2022] Open
|
7
|
Iso Y, Sawada T, Rokkaku K, Furihata T, Shimoda M, Kita J, Kubota K. A case of symptomatic Morgagni's hernia and a review of Morgagni's hernia in Japan (263 reported cases). Hernia 2006; 10:521-4. [PMID: 16912844 DOI: 10.1007/s10029-006-0123-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2006] [Accepted: 07/13/2006] [Indexed: 10/24/2022]
Abstract
An 81-year-old female patient was admitted to the emergency room of our hospital with complaints of respiratory distress, abdominal ache, nausea, and intermittent vomiting. A plain X-ray of the abdomen and chest revealed air-fluid levels on the abdomen and the right side of the chest. Laboratory tests showed severe acidemia with a blood base excess level of -24.9 mmol/L. Since the patient was considered to have acute intestinal obstruction due to transverse colon herniation into the thorax through a foramen of Morgagni, emergency surgery was performed. Operative findings revealed that the retrosternal diaphragm had a defect of 5 cm in diameter and 20 cm in length with the transverse colon herniated into the thorax. The diaphragm defect was sutured first, and partial resection of the transverse colon was performed. After the operation, the patient had no symptoms and no recurrence has been observed during the 1-year follow-up. There have been 263 reported cases of Morgagani hernia in Japan. The case of the Morgagni hernia is reported here with some bibliographical comments.
Collapse
Affiliation(s)
- Y Iso
- Second Department of Surgery, Dokkyo University School of Medicine, 880 Mibu, Tochigi 321-0293, Japan.
| | | | | | | | | | | | | |
Collapse
|
8
|
Horiuchi H, Kawamata H, Furihata T, Omotehara F, Hori H, Shinagawa Y, Ohkura Y, Tachibana M, Yamazaki T, Ajiki T, Kuroda Y, Fujimori T. A MEK inhibitor (U0126) markedly inhibits direct liver invasion of orthotopically inoculated human gallbladder cancer cells in nude mice. J Exp Clin Cancer Res 2004; 23:599-606. [PMID: 15743030] [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: 05/02/2023]
Abstract
Primary cancer of the gallbladder is not unusual. Most cases of gallbladder cancer are found at an advanced stage, accompanied by the invasion to the liver, metastases to the lymph nodes and distant organs, and peritoneal dissemination. In this study, we first examined the effect of mitogen-activated protein kinase kinase (MEK) inhibitors on the production of matrix metalloproteinases (MMPs), urokinase-type plasminogen activator (uPA), and tissue inhibitors of metalloproteinases (TIMPs) in a human gallbladder cancer cell line, NOZ cells in vitro. MEK inhibitors (PD98059 and U0126) inhibited the production of MMP-2, MMP-9 and high MW uPA, and upregulated TIMPs (TIMP-1, TIMP-2 and TIMP-3). Subsequently, we examined the effect of U0126 on invasion and metastasis of orthotopically inoculated NOZ cells in nude mice. Direct liver invasion by cancer cells was detected in all of the mice in the control group, but in only one mouse in the U0126-treated group. Most of the primary tumors in the U0126-treated group expanded to the liver, but did not invade into the liver. Vessel invasion in the liver was evident in 4 out of 5 mice in the control group, but in only one mouse in the U0126-treated group. Lymph node metastases and peritoneal dissemination were recognized in all of the mice in both groups. All 5 mice in the U0126-treated group, and 4 out of 5 mice in the vehicle control group, had metastases in the lungs. The present results suggest that a MEK inhibitor, U0126, prolonged the survival of the mice with NOZ tumor by inhibiting direct liver invasion and vessel invasion of the cancer cells via down-regulation of the matrix degrading ability of the cancer cells.
Collapse
Affiliation(s)
- H Horiuchi
- Dept. of Surgical and Molecular Pathology, Dokkyo University School of Medicine, Tochigi, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Sakai T, Furihata T, Kawamata H, Omotehara F, Shinagawa Y, Imura J, Kubota K, Terano A, Fujimori T. Molecular and genetic characterization of a non-metastatic human esophageal cancer cell line, T.Tn expressing non-functional mutated p53. Int J Oncol 2002. [DOI: 10.3892/ijo.21.3.547] [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: 11/05/2022] Open
|
10
|
Furihata T, Kawamata H, Kubota K, Fujimori T. Evaluation of the malignant potential of aberrant crypt foci by immunohistochemical staining for β-catenin in inflammation-induced rat colon carcinogenesis. Int J Mol Med 2002. [DOI: 10.3892/ijmm.9.4.353] [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: 11/05/2022] Open
|
11
|
Tagaya N, Suzuki N, Furihata T, Kubota K. Laparoscopic resection of a functional paraganglioma in the organ of Zuckerkandl. Surg Endosc 2002; 16:219. [PMID: 11961657 DOI: 10.1007/s00464-001-4108-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2001] [Accepted: 06/18/2001] [Indexed: 10/26/2022]
Abstract
We describe the successful laparoscopic resection of a functional paraganglioma in the organ of Zuckerkandl. A 47-year-old man with hypertension and diabetes mellitus was found to have an abdominal mass beside the aorta. The tumor was diagnosed as a functional paraganglioma by diagnostic imaging and biochemical tests. We then performed a transperitoneal laparoscopic resection for removal. After freeing the left ureter, resecting the inferior mesenteric artery, and dividing the small blood vessels, the tumor was isolated and found to be preserved in its capsule. It was retrieved in a bag through an enlarged incision. The operation time was 450 min and blood loss was 410 ml. The postoperative course was uneventful and there has been no local recurrence or distant metastasis during the 18-month follow-up period. Laparoscopic resection of functional extraadrenal paragangliomas is technically feasible and safe if adequate pre- and intraoperative medical management and a careful, steady surgical technique are used.
Collapse
Affiliation(s)
- N Tagaya
- Second Department of Surgery, Dokkyo University School of Medicine, 880 Kitakobayashi, Mibu, Tochigi 321-0293, Japan.
| | | | | | | |
Collapse
|
12
|
Furihata T, Sakai T, Kawamata H, Omotehara F, Shinagawa Y, Imura J, Ueda Y, Kubota K, Fujimori T. A new in vivo model for studying invasion and metastasis of esophageal squamous cell carcinoma. Int J Oncol 2001; 19:903-7. [PMID: 11604986 DOI: 10.3892/ijo.19.5.903] [Citation(s) in RCA: 9] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The aim of our current study was to establish an orthotopic inoculation model for studying invasion and metastasis of esophageal squamous cell carcinoma (SCC). Male BALB/c nude mice were used for the experiment. A midline incision was made from the upper to middle abdomen. The abdominal esophagus was carefully exposed. Human esophageal T.Tn SCC cells or human cervical HeLa SCC cells, were injected into the submucosa of the lower esophagus. One of the mice injected with T.Tn cells was sacrificed at 5 weeks, and the remaining five sacrificed at 13 weeks after inoculation. The mice injected with HeLa cells were sacrificed at 3-4 weeks after inoculation. T.Tn cells and HeLa cells formed tumors at the esophagus, but did not metastasize to lymph nodes or lungs. HeLa cells produced peritoneal implants, and directly invaded the stomach and the liver. In the present study, we established a novel orthotopic inoculation model of esophageal SCC. This system is an appropriate and a useful model for studying invasion and metastasis of esophageal SCC, and can also be used as a model for developing therapeutic strategies for esophageal cancer in vivo.
Collapse
Affiliation(s)
- T Furihata
- Department of Gastroenterological Surgery, Dokkyo University School of Medicine, Tochigi 321-0293, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Abstract
We cloned a cDNA encoding a novel synGAP, synGAP-d (GenBank(TM) accession number ), from a rat brain cDNA library. The clone consisted of 4801 nucleotides with a coding sequence of 3501 nucleotides, encoded a protein consisting of 1166 amino acids with >99% homology with 1092 amino acid overlaps to synGAP, and contained a 13-nucleotide insertion to the previously reported synGAP mRNAs, which suggested that the clone was a splice variant of synGAP. We also found that there are at least seven variants in the 3' portion of the synGAP mRNA and that they encoded five different protein isoforms. The coding sequence of these C-terminal variants were classified into alpha1, alpha2, beta1, beta2, beta3, beta4, and gamma, and synGAP-d was classified as the beta1 form. The previously reported synGAPs (synGAP-a, -b, and -c and p135synGAP) can be classified as the alpha1 isoform. All isoforms were expressed specifically in the brain. Unexpectedly, the beta isoform, which lacks a C-terminal PSD-95-binding motif ((S/T)XV), was more restricted to the postsynaptic density fraction than the motif-containing alpha1 isoform. The beta isoform did not interact with PSD-95 but specifically interacted with a nonphosphorylated alpha subunit of Ca(2+)/calmodulin-dependent protein kinase II through its unique C-terminal tail.
Collapse
Affiliation(s)
- W Li
- Department of Neuroplasticity, Research Center on Aging and Adaptation, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto 390-8621, Japan
| | | | | | | | | | | | | |
Collapse
|
14
|
Furihata T, Kawamata H, Ohsugi R, Sato S, Kubota K, Fujimori T. [Colitis enhances the colorectal carcinogenesis in rats: correlation between the incidence of aberrant crypt foci and the incidence of tumors]. Nihon Shokakibyo Gakkai Zasshi 2001; 98:525-32. [PMID: 11400280] [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: 02/20/2023]
Abstract
We examined the implication of colitis on the colorectal carcinogenesis in rats. We used 1, 2-dimethylhydrazine (DMH) as a carcinogen and trinitrobenzenesulfonic acid (TNB) as a colitis-inducing agent on F344 rats. After treating the rats with DMH, TNB markedly enhanced the incidence of aberrant crypt foci (ACF), putative preneoplastic lesions, as well as colon cancers in the rats (p < 0.01). There was positive correlation between the incidence of ACF and the incidence of tumors. Furthermore, we treated the rats with two different anti-inflammatory drugs (a non-steroidal anti-inflammatory drug: Fenbufen and a platelet activating factor-receptor antagonist: PAF-RA) after pre-treatment with DMH and TNB. Only PAF-RA significantly decreased the incidence of ACF in the rats (p < 0.05).
Collapse
Affiliation(s)
- T Furihata
- Department of Gastroenterological Surgery, Dokkyo University School of Medicine
| | | | | | | | | | | |
Collapse
|
15
|
Uno Y, Furihata T, Abe H, Yoshida R, Shinozaki K, Yamaguchi-Shinozaki K. Arabidopsis basic leucine zipper transcription factors involved in an abscisic acid-dependent signal transduction pathway under drought and high-salinity conditions. Proc Natl Acad Sci U S A 2000; 97:11632-7. [PMID: 11005831 PMCID: PMC17252 DOI: 10.1073/pnas.190309197] [Citation(s) in RCA: 820] [Impact Index Per Article: 34.2] [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: 11/18/2022] Open
Abstract
The induction of the dehydration-responsive Arabidopsis gene, rd29B, is mediated mainly by abscisic acid (ABA). Promoter analysis of rd29B indicated that two ABA-responsive elements (ABREs) are required for the dehydration-responsive expression of rd29B as cis-acting elements. Three cDNAs encoding basic leucine zipper (bZIP)-type ABRE-binding proteins were isolated by using the yeast one-hybrid system and were designated AREB1, AREB2, and AREB3 (ABA-responsive element binding protein). Transcription of the AREB1 and AREB2 genes is up-regulated by drought, NaCl, and ABA treatment in vegetative tissues. In a transient transactivation experiment using Arabidopsis leaf protoplasts, both the AREB1 and AREB2 proteins activated transcription of a reporter gene driven by ABRE. AREB1 and AREB2 required ABA for their activation, because their transactivation activities were repressed in aba2 and abi1 mutants and enhanced in an era1 mutant. Activation of AREBs by ABA was suppressed by protein kinase inhibitors. These results suggest that both AREB1 and AREB2 function as transcriptional activators in the ABA-inducible expression of rd29B, and further that ABA-dependent posttranscriptional activation of AREB1 and AREB2, probably by phosphorylation, is necessary for their maximum activation by ABA. Using cultured Arabidopsis cells, we demonstrated that a specific ABA-activated protein kinase of 42-kDa phosphorylated conserved N-terminal regions in the AREB proteins.
Collapse
Affiliation(s)
- Y Uno
- Biological Resources Division, Japan International Research Center for Agricultural Science (JIRCAS), Ministry of Agriculture, Forestry, and Fisheries, Ohwashi 1-2, Tsukuba, Ibaraki 305-8686, Japan
| | | | | | | | | | | |
Collapse
|
16
|
Yamada J, Kurata A, Hirata M, Taniguchi T, Takama H, Furihata T, Shiratori K, Iida N, Takagi-Sakuma M, Watanabe T, Kurosaki K, Endo T, Suga T. Purification, molecular cloning, and genomic organization of human brain long-chain acyl-CoA hydrolase. J Biochem 1999; 126:1013-9. [PMID: 10578051 DOI: 10.1093/oxfordjournals.jbchem.a022544] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [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: 11/13/2022] Open
Abstract
An acyl-CoA hydrolase, referred to as hBACH, was purified from human brain cytosol. The enzyme had a molecular mass of 100 kDa and 43-kDa subunits, and was highly active with long-chain acyl-CoAs, e.g. a maximal velocity of 295 micromol/min/mg and K(m) of 6.4 microM for palmitoyl-CoA. Acyl-CoAs with carbon chain lengths of C(8-18) were also good substrates. In human brain cytosol, 85% of palmitoyl-CoA hydrolase activity was titrated by an anti-BACH antibody, which accounted for over 75% of the enzyme activity found in the brain tissue. The cDNA isolated for hBACH, when expressed in Escherichia coli, directed the expression of palmitoyl-CoA hydrolase activity and a 44-kDa protein immunoreactive to the anti-BACH antibody, which in turn neutralized the hydrolase activity. The hBACH cDNA encoded a 338-amino acid sequence which was 95% identical to that of a rat homolog. The hBACH gene spanned about 130 kb and comprised 9 exons, and was mapped to 1p36.2 on the cytogenetic ideogram. These findings indicate that the long-chain acyl-CoA hydrolase present in the brain is well conserved between man and the rat, suggesting a conserved role for this enzyme in the mammalian brain, and enabling genetic studies on the functional analysis of acyl-CoA hydrolase.
Collapse
Affiliation(s)
- J Yamada
- Department of Clinical Biochemistry, Tokyo University of Pharmacy and Life Science, Hachioji, Tokyo, 192-0392, Japan. . ac.jp
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Yamada J, Suga K, Furihata T, Kitahara M, Watanabe T, Hosokawa M, Satoh T, Suga T. cDNA cloning and genomic organization of peroxisome proliferator-inducible long-chain acyl-CoA hydrolase from rat liver cytosol. Biochem Biophys Res Commun 1998; 248:608-12. [PMID: 9703974 DOI: 10.1006/bbrc.1998.9048] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [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: 11/22/2022]
Abstract
The cDNA for a peroxisome proliferator-inducible long-chain acyl-CoA hydrolase from rat liver cytosol, referred to as rLACH2, was isolated and its genomic structure was determined. The cDNA encoded a 419-amino-acid polypeptide with a calculated molecular weight of 46,011. Sequence analysis identified an active-site serine motif (Gly-x-Ser-x-Gly) common to carboxylesterases and lipases. When expressed in Escherichia coli, the cDNA directed expression of a protein immunoreactive to an anti-rLACH2 antibody with a molecular mass of 47 kDa, identical to that of purified rLACH2. Northern blot analysis showed marked induction of rLACH2 mRNA in the liver after feeding rats with di(2-ethylhexyl)phthalate, a peroxisome proliferator. The rLACH2 gene spanned about 19 kb and comprised 3 exons, the intron/exon boundaries of which were consistent with the donor/acceptor splice rule. A putative peroxisome proliferator response element (AGGTCATGGTTCA) was identified in the 5'-flanking region, suggesting the involvement of peroxisome proliferator-activated receptors in the regulation of rLACH2 gene expression.
Collapse
Affiliation(s)
- J Yamada
- Department of Clinical Biochemistry, Tokyo University of Pharmacy and Life Science, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
18
|
Yamada J, Furihata T, Iida N, Watanabe T, Hosokawa M, Satoh T, Someya A, Nagaoka I, Suga T. Molecular cloning and expression of cDNAs encoding rat brain and liver cytosolic long-chain acyl-CoA hydrolases. Biochem Biophys Res Commun 1997; 232:198-203. [PMID: 9125130 DOI: 10.1006/bbrc.1997.6246] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [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: 02/04/2023]
Abstract
cDNAs encoding the long-chain acyl-CoA hydrolases (ACHs) from rat brain and liver, referred to as rBACH and rLACH1, respectively, were isolated and sequenced. The rBACH cDNA contained an open reading frame encoding a 338-amino acid polypeptide with a calculated molecular weight of 37,559, of which the deduced amino acid sequence matched partial amino acid sequences directly determined for peptides generated by tryptic digestion or CNBr cleavage of purified rBACH. The rLACH1 cDNA contained an open reading frame encoding a 343-amino acid polypeptide with a molecular weight of 38,240. When expressed in Escherichia coli, these cDNAs produced palmitoyl-CoA hydrolase activity and 44-kDa proteins with molecular masses similar to those of purified rBACH and rLACH1 (43 kDa). These expressed proteins and enzyme activity were immunoblotted and neutralized, respectively, by anti-rBACH or anti-rLACH1 antibodies. rLACH1 cDNA had 84 and 94% identity with rBACH cDNA at the nucleotide and amino acid levels, respectively. However, the 5'-end of the former cDNA which contained the N-terminal coding region of rLACH1 was entirely different from the corresponding region of rBACH cDNA, suggesting that these enzymes may be generated by alternative use of exons of the same gene. Northern blot analysis showed that ACH mRNA was expressed constitutively in the rat brain and testis, whereas its expression in the liver was inducible by treatment with the peroxisome proliferator. This study demonstrated the molecular diversity of ACH and suggested the presence of tissue-specific mechanisms to regulate the ACH gene expression.
Collapse
Affiliation(s)
- J Yamada
- Department of Clinical Biochemistry, Tokyo University of Pharmacy and Life Science, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Yamada J, Furihata T, Tamura H, Watanabe T, Suga T. Long-chain acyl-CoA hydrolase from rat brain cytosol: purification, characterization, and immunohistochemical localization. Arch Biochem Biophys 1996; 326:106-14. [PMID: 8579357 DOI: 10.1006/abbi.1996.0053] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.3] [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: 01/31/2023]
Abstract
Long-chain acyl-CoA hydrolase (EC 3.1.2.2), which is found primarily in the brain in rats, catalyzes the hydrolysis of fatty acyl-CoA thioesters. We purified this enzyme, referred to as ACH, from the rat brain cytosol. The molecular masses of the native enzyme and the subunit were estimated to be 104 and 36 kDa, respectively. The enzyme showed high activity with long-chain acyl-CoAs, e.g., with maximal velocity of 262 mumol/min/mg and Km of 5.7 microM for palmitoyl-CoA, but acyl-CoAs with carbon chain lengths of C8-18 were also good substrates. The enzyme was refractory to the inhibitory effect of diisopropyl fluorophosphate and phenylmethylsulfonyl fluoride, but sensitive to p-chloromercuribenzoate. In the rat brain cytosol, about 90% of palmitoyl-CoA hydrolase activity was titrated by anti-ACH antibody, which accounted for over 70% of the enzyme activity found in the brain tissue. Immunoblots of the cytosol prepared from rat brain regional blocks indicated the broad distribution of ACH over the brain, with a relatively high level in the pons and medulla. Immunohistochemically, ACH was localized to neurons. In addition to various nuclei, some neuronal cells, such as mitral cells in the olfactory bulb, pyramidal cells in the cerebral cortex, and Purkinje cells in the cerebellum, were also immunostained with anti-ACH antibody. Brain cytosols prepared from ten mammalian species including human contained a single polypeptide reactive to anti-ACH antibody with molecular masses of 34-36 kDa, together with high activities of palmitoyl-CoA hydrolase. These findings suggest the physiological significance of ACH in the brain, although its precise role remains to be determined.
Collapse
Affiliation(s)
- J Yamada
- Department of Clinical Biochemistry, Tokyo University of Pharmacy and Life Science, Japan
| | | | | | | | | |
Collapse
|
20
|
Yamada J, Matsumoto I, Furihata T, Sakuma M, Suga T. Purification and properties of long-chain acyl-CoA hydrolases from the liver cytosol of rats treated with peroxisome proliferator. Arch Biochem Biophys 1994; 308:118-25. [PMID: 7906114 DOI: 10.1006/abbi.1994.1017] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [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: 01/27/2023]
Abstract
Two long-chain acyl-CoA hydrolases, referred to as ACH1 and ACH2, were purified from the liver cytosol of rats fed a diet containing di(2-ethylhexyl)phthalate, a peroxisome proliferator. The molecular mass of ACH1 was estimated to be 73 kDa by gel filtration, and that of the subunits, 36 kDa by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The corresponding values of ACH2 were 42 and 43 kDa, respectively. Both enzymes were active toward fatty acyl-CoAs with chain-lengths of C12-16, but ACH1 had relatively broad specificity as acyl-CoAs with C8-18 were good substrates. A marked difference in their catalytic properties was found in the maximal velocity; for palmitoyl-CoA, 553 and 4.23 mumol/min/mg with Km values of 5.9 and 5.4 microM for ACH1 and ACH2, respectively. ACH2 underwent severe substrate inhibition with high concentrations of long-chain acyl-CoAs, whereas ACH1 did not. Examination with various reagents including divalent cations, sulfhydryl-blocking reagent, nucleotides, and hypolipidemic drugs, characterized ACH1 and ACH2 with several properties distinct from those of mitochondrial and microsomal hydrolases. ACH1 and ACH2 were also discernible in that the former, but not the latter, was inhibited by ATP. In the liver cytosol of rats treated with di(2-ethylhexyl)phthalate, about 90% of palmitoyl-CoA hydrolase activity was titrated with anti-ACH1 and anti-ACH2 antibodies. Immunoblot analysis suggested the presence of the enzymes also in extrahepatic tissues, especially in the brain and testis (ACH1), and in the heart and kidney (ACH2).
Collapse
Affiliation(s)
- J Yamada
- Department of Clinical Biochemistry, Tokyo College of Pharmacy, Japan
| | | | | | | | | |
Collapse
|
21
|
Furihata T. [My experience in obstetrical nursing]. Josanpu Zasshi 1986; 40:330-1. [PMID: 3636471] [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: 01/06/2023]
|
22
|
Wakai S, Fukushima T, Furihata T, Sano K. Association of cerebral aneurysm with pituitary adenoma. Surg Neurol 1979; 12:503-7. [PMID: 524269] [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: 12/15/2022]
Abstract
Seven cases of coincidental aneurysm with pituitary adenoma found through the review of our personal series of 95 pituitary adenomas over a period of five years are reported. The incidence of coexisting aneurysms in our series of pituitary adenomas (7.4%) was significantly higher than that in other brain tumors (1.1%) (p less than 0.001). Its clinical significance is discussed including the indications for four-vessel angiography, the surgical approaches to these pituitary adenomas, and the management of the associated aneurysms.
Collapse
|
23
|
Nagai M, Teraoka A, Furihata T, Nomura K, Matsutani M. [Problems of the action of cyclic AMP on malignant brain tumors (author's transl)]. No Shinkei Geka 1974; 2:511-9. [PMID: 4374664] [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: 01/10/2023]
|
24
|
Saito I, Furihata T, Hashizume K, Sato O, Sano K. [Total removal of hemangioblastoma of the spinal cord]. No To Shinkei 1971; 23:13-7. [PMID: 5107669] [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: 01/13/2023]
|
25
|
Sato O, Furihata T, Tsuchida T, Sekino H, Nakamura N. [Cystic meningioma]. No To Shinkei 1971; 23:33-9. [PMID: 5107672] [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: 01/13/2023]
|
26
|
Sato O, Furihata T, Chigasaki H, Sano K. [Pinealoma of the cerebellopontine angle--problems in the location of the lesion]. No To Shinkei 1970; 22:821-7. [PMID: 5311886] [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]
|