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Sugimoto N, Fukuda J, Takatori K, Yamada T, Maitani T. Identification of principal constituents in enzymatically hydrolyzed coix extract. SHOKUHIN EISEIGAKU ZASSHI. JOURNAL OF THE FOOD HYGIENIC SOCIETY OF JAPAN 2001; 42:309-15. [PMID: 11775356 DOI: 10.3358/shokueishi.42.309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The structural elucidation of the main constituents in enzymatically hydrolyzed coix extract, a natural food preservative, was carried out. After peracetylation, five compounds, namely peracetylated forms of glucose, maltose, maltotriose, maltotetraose, and maltopentaose were isolated. The structures were determined by PFG HMQC and HMBC experiments. In addition, by using HPLC with an RI detector, the main components of this coix extract were identified as a mixture of oligosaccharides having one to seven glucose units coupled through alpha-(1-->4) linkages. Since this extract showed no antimicrobial activity, its preservative effect may be caused by its covering of the food surface, thereby blocking contact with air.
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Tominaga K, Alstergren P, Kurita H, Matsukawa A, Fukuda J, Kopp S. Interleukin-1beta in antigen-induced arthritis of the rabbit temporomandibular joint. Arch Oral Biol 2001; 46:539-44. [PMID: 11311201 DOI: 10.1016/s0003-9969(01)00009-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The aim was to investigate joint perfusate levels of interleukin-1beta (IL-1beta) in antigen-induced monoarthritis of the rabbit temporomandibular (TMJ) and knee joints. Twenty-four adult male New Zealand White rabbits were divided into three groups: a control group as well as TMJ arthritis and knee joint arthritis groups. After sensitization, unilateral arthritis was induced by intra-articular injection with ovalbumin and the contralateral joint was injected with saline 3 weeks after induction of arthritis. Joints were then perfused continuously with saline and samples were collected at 10-min intervals over a 50-min period. The IL-1beta concentrations in the samples were then analyzed. After killing the animals, the joints were examined histologically. The IL-1beta concentrations in the samples from the arthritic TMJs and knee joints were significantly higher than in the saline-injected and the control joints. Histological signs of chronic arthritis of similar severity were found in both joints. The IL-1beta levels in the samples from the arthritic TM and knee joints correlated with the histological severity of the arthritis, including pannus formation. In conclusion, this study shows that IL-1beta is released in the synovium of rabbit TMJs and knee joints during antigen-induced arthritis, and that high IL-1beta levels in synovial fluid are associated with histological signs of inflammation including, pannus tissue formation.
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Kawamura K, Fukuda J, Kodama H, Kumagai J, Kumagai A, Tanaka T. Expression of Fas and Fas ligand mRNA in rat and human preimplantation embryos. Mol Hum Reprod 2001; 7:431-6. [PMID: 11331665 DOI: 10.1093/molehr/7.5.431] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The Fas-Fas ligand (L) system is one of the major signalling pathways to induce apoptosis in various cells and tissues. The aim of this study was to investigate the expression of the Fas-Fas L system in rat and human oocytes and preimplantation embryos. We determined the expression of Fas and Fas L mRNA of rat oocytes and embryos up to the blastocyst stage, and of human embryos at the 2- or 4-cell stage, using reverse transcription polymerase chain reaction (PCR) and nested PCR techniques. Moreover, we investigated the expression of Fas mRNA in human fragmented embryos. In rat embryos, Fas mRNA was expressed at the 2-cell stage only, whereas Fas L mRNA was expressed in oocytes, and at the pronuclear (1-cell) and 2-cell stages. In human embryos, Fas mRNA was expressed at the 4-cell stage only, whereas Fas L mRNA was expressed at both 2- and 4-cell stages. Human fragmented embryos expressed both Fas and Fas L mRNA. Because simultaneous expression of Fas and Fas L mRNA occurred in 2-cell rat embryos and in 4-cell human embryos, the Fas-Fas L system might be involved in the apoptotic pathway in the early embryos of these species.
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Hebiguchi T, Kato T, Yoshino H, Mizuno M, Takahashi T, Fukuda J, Tanaka T. Biliary atresia with hyperandrogenic amenorrhea. Pediatr Surg Int 2001; 17:209-12. [PMID: 11315291 DOI: 10.1007/s003830000412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The etiology of hyperandrogenic amenorrhea in a patient with biliary atresia successfully treated by a Kasai operation was unclear. Delayed puberty and menarche were evident at 16 years of age. Investigations showed no luteinizing hormone (LH)-follicle-stimulating hormone surge. A LH-releasing hormone provocative test showed a normal response. Peripheral aromatization of androgens appeared to function normally. Free testosterone (T) was normal, however, plasma levels of sex-hormone-binding globulin and total T were high. After menarche at 18 years of age, anovulatory menstrual cycles continued. A combination of estrogen and progesterone therapy was effective. A possible explanation may be that metabolic clearance of T is reduced in the presence of liver cirrhosis and a portosystemic shunt.
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Matsuo H, Chairoungdua A, Kim DK, Cha SH, Fukuda J, Endou H, Kanai Y. Mouse Asc-1 (asc-type amino acid transporter 1) maps to chromosome 7, region B1-B5. Chromosome Res 2001; 8:456. [PMID: 10997788 DOI: 10.1023/a:1009299311416] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Yamamoto H, Sato H, Shibata S, Murata M, Fukuda J, Tanaka T. Involvement of annexin V in the antiproliferative effect of GnRH agonist on cultured human uterine leiomyoma cells. Mol Hum Reprod 2001; 7:169-73. [PMID: 11160843 DOI: 10.1093/molehr/7.2.169] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The objective of this study was to elucidate the role of annexin V, an endogenous inhibitor of protein kinase C (PKC), with regard to the antiproliferative effect of gonadotrophin-releasing hormone (GnRH) agonist (buserelin) on cultured human uterine leiomyoma cells. Uterine leiomyoma tissue was collected from the surgical specimens of patients and cells from 37 specimens (15 cases) were cultured. For up to 96 h after the addition of buserelin to the cultured cells, a time-dependent antiproliferative effect was noted in the group to which 10(-5) mol/l buserelin was added. Both the intracellular concentration of annexin V and the expression of annexin V mRNA increased time-dependently with the addition of buserelin. The intracellular concentration of annexin V increased with the addition of PKC activator (12-O:-tetradecanoylphorbor-13-acetate; TPA) much as it did with the addition of buserelin, and the rise in the concentration caused by the addition of buserelin was completely attenuated by pretreatment with PKC inhibitor (calphostin C). Our findings suggest that buserelin inhibits cell proliferation in cultured human uterine leiomyoma cells accompanied with an increase in the intracellular concentration of annexin V, mediated, at least in part, by the activation of PKC.
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Yamashita Y, Shimada M, Tsujita E, Rikimaru T, Ijima H, Nakazawa K, Sakiyama R, Fukuda J, Funatsu K, Sugimachi K. The efficacy of nafamostat mesilate on the performance of a hybrid-artificial liver using a polyurethane foam/porcine hepatocyte spheroid culture system in human plasma. Int J Artif Organs 2001; 24:34-40. [PMID: 11266040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Nafamostat mesilate (FUT) is a protease inhibitor of complement activation. The present study investigates whether FUT protects porcine hepatocytes from being injured by human plasma in a multi-capillary polyurethane foam packed-bed culture system (MC-PUF) such as the hybrid-artificial liver (PUF-HAL). Human plasmas with 1 mM of added ammonia were perfused using a small-scale PUF-HAL with porcine hepatocytes. FUT was continuously infused (10 microg/ml, 50 microg/ml). The ammonia detoxification was maintained in human plasma for 24 hours and for 48 hours with FUT which suppressed the rapid increase of asparaginic acid aminotransferase (AST) and alanine aminotransferase (ALT). After 60 hours of perfusion, hepatocyte spheroids completely collapsed in the human plasma, but a small amount of hepatocyte spheroid was maintained by FUT. The effect of FUT was slightly greater at 50 microg/ml than at 10 microg/ml. Our results suggest that FUT has protective effects against porcine hepatocytes in human plasma, and our PUF-HAL using porcine hepatocytes can function in human plasma for about 48 hours with FUT.
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Fukuda J, Kumagai J, Kodama H, Murata M, Kawamura K, Tanaka T. Upper limit of the number of IVF-ET treatment cycles in different age groups, predicted by cumulative take-home baby rate. Acta Obstet Gynecol Scand 2001; 80:71-3. [PMID: 11167193 DOI: 10.1034/j.1600-0412.2001.800114.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Matsuo H, Tsukada S, Nakata T, Chairoungdua A, Kim DK, Cha SH, Inatomi J, Yorifuji H, Fukuda J, Endou H, Kanai Y. Expression of a system L neutral amino acid transporter at the blood-brain barrier. Neuroreport 2000; 11:3507-11. [PMID: 11095508 DOI: 10.1097/00001756-200011090-00021] [Citation(s) in RCA: 111] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Amino acid transport system L has been proposed to be one of the major nutrient transport systems at the blood-brain barrier. Using immunohistochemical analyses, a system L transporter LAT1 was shown to be expressed in the brain capillary endothelial cells in rats. Because LAT1 was coexpressed with 4F2 heavy chain which brings LAT1 to the plasma membrane, LAT1 is proposed to be functional in the plasma membrane of brain capillary endothelial cells. Both LAT1 and 4F2hc immunoreactivities were detected in a double line appearance surrounding endothelial cell nuclei, suggesting both proteins are present in the luminal and abluminal membranes. LAT1 is, thus, a blood-brain barrier system L transporter responsible for the permeation of aromatic or branched-chain amino acids and amino acid-related drugs such as L-DOPA.
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Tanaka H, Karube A, Kodama H, Fukuda J, Tanaka T. Mass screening for human papillomavirus type 16 infection in infertile couples. THE JOURNAL OF REPRODUCTIVE MEDICINE 2000; 45:907-11. [PMID: 11127102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
OBJECTIVE To investigate the prevalence of human papillomavirus (HPV) type 16 infection among in vitro fertilization (IVF) couples and to identify clinical conditions related to HPV infection. STUDY DESIGN The presence of HPV type 16 DNA in the uterine cervix of 192 women who underwent IVF and in 99 semen samples collected from their husbands were determined by the nested polymerase chain reaction method. RESULTS Ten women (5.5%) and 4 men (4.0%) were found to be HPV type 16 DNA positive. However, presence of the HPV type 16 DNA in the cervix or semen did not have any impact on IVF treatment variables, including presence of tubal factor, incidence of pregnancies and abortions, and semen quality. Only one of four women, whose partner's semen was HPV type 16 DNA positive, had a DNA positive cervix. CONCLUSION These data provide useful information for counseling infertile couples with HPV type 16 infection.
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Kawamura K, Fukuda J, Itoh H, Ito K, Kodama H, Kumagai J, Kumagai A, Tanaka T. Chaperonin 10 in the rat oocytes and early embryos: its expression and activity for early pregnancy factor. Am J Reprod Immunol 2000; 44:242-8. [PMID: 11076097 DOI: 10.1111/j.8755-8920.2000.440409.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
PROBLEM The aim of this study was to investigate the expression of chaperonin (cpn) 10 and cpn 60 mRNA in oocytes or embryos, and to further explore the possibility that early pregnancy factor (EPF) is identical with cpn 10. METHOD OF STUDY The expressions of cpn 10 and cpn 60 mRNA in oocytes and embryos at the different stages (1-cell, 2-cell, 8-cell, and morula) were examined by polymerase chain reaction techniques. The EPF activity of native rat cpn 10 isolated from rat livers was evaluated by the rosette inhibition test. RESULTS Similar levels of mRNA of cpn 10 and cpn 60 were detected in oocytes and embryos at every stage. There were no detectable EPF activities in the native cpn 10. Immunoprecipitation using polyclonal antibodies against cpn 10 did not affect the activity of EPF in the pregnant rat serum. CONCLUSION Our results do not support the hypothesis that cpn 10 is identical with EPF.
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Muraki Y, Tateishi A, Seta C, Fukuda J, Haneji T, Oya R, Ikemura K, Kobayashi N. Fas antigen expression and outcome of oral squamous cell carcinoma. Int J Oral Maxillofac Surg 2000; 29:360-5. [PMID: 11071240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Paraffin sections of biopsy specimens obtained from 46 patients with oral squamous cell carcinomas were stained with both anti-peptide antibody against human Fas antigen and monoclonal mouse antibody against human proliferating cell nuclear antigen (PCNA). The patients received chemotherapy with a combination of carboplatin and peplomycin sulfate or mitomycin C and peplomycin sulfate before surgery. The relation between the expression of Fas antigen and the clinical features of each case was examined. The correlation between PCNA and Fas antigen expression was also studied. The mean PCNA labeling index of the 22 Fas-negative cases was 46.9%, which was significantly higher than that of the 24 Fas-positive cases (39.5%). Strong correlations were found between the expression of Fas antigen and the response to chemotherapy, tumor recurrence, and survival. The Fas-negative group had only a minor response to chemotherapy and a poor outcome, whereas the Fas-positive group had a better response to chemotherapy and a good outcome. Although lymph node metastasis was significantly related to survival, there was no correlation between Fas antigen expression and lymph node metastasis. The Kaplan-Meier survival curve of patients positive for Fas antigen was significantly better than that of patients negative for Fas antigen. Our results suggest that Fas antigen expression is an independent predictor of outcome whose usefulness should be evaluated in prospective studies.
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Iida A, Takagi R, Hoshina H, Ono K, Kaji M, Tsurumaki H, Fukuda J, Nagashima K, Miyaura Y, Hayatsu M, Miyamoto T. [5-FU concentration in the serum and the tumor tissue after administration of UFT 200 mg/day to patients over 80 years of age with oral cancer]. Gan To Kagaku Ryoho 2000; 27:1527-32. [PMID: 11015997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
UFT was administered orally at a dosage of 200 mg/day, 2 times a day, to patients over 80 years of age with oral cancer. The concentration of 5-FU in the serum and tumor tissue, as well as the side effects, were investigated. The results were as follows: 1. The concentration of 5-FU in the serum peaked (0.017 to 0.066 microgram/ml) 1 or 2 hours after UFT administration. The concentration 8 hours after administration was relatively high (0.016 to 0.041 microgram/ml). 2. The 5-FU concentrations in the tumor tissues in 3 out of 5 cases were greater than 0.05 microgram/g, which is considered to be the effective level. The concentration tended to be higher with increased duration of administration. 3. A minor side effect, bone marrow dysfunction, was observed. No effect on the function of the liver or digestive system was observed.
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Kawamura K, Sekiguchi K, Shibata S, Fukuda J, Kodama H, Tanaka T. Immunohistochemical analysis of adenomatoid tumor of the uterus utilizing of monoclonal antibody HBME-1. Acta Obstet Gynecol Scand 2000; 79:798-9. [PMID: 10993108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Kamakura K, Kaida K, Kusunoki S, Miyamoto N, Fukuda J, Motoyoshi K. Elevation in anti-GQ1b, anti-GT1a, and anti-GT1b IgG antibodies in postinfectious acute ataxic neuropathy with oropharyngeal palsy but without ophthalmoplegia. J Neurol 2000; 247:566-7. [PMID: 10993504 DOI: 10.1007/s004150070160] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Seta C, Fujita M, Muraki Y, Fukuda J, Kobayashi S, Haneji T. Fas expression and Fas monoclonal antibody-induced apoptosis in a human squamous cell carcinoma cell line, SCC-25. J Oral Pathol Med 2000; 29:271-8. [PMID: 10890558 DOI: 10.1034/j.1600-0714.2000.290606.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Fas antigen is a cell surface protein that mediates apoptosis via signal transduction from the plasma membrane. Using reverse transcriptase-polymerase chain reaction (RT-PCR), messenger RNA for Fas antigen was detected in the human oral squamous cell carcinoma cell line, SCC-25. In serum-free medium, a monoclonal anti-Fas antibody (CH-11) induced Fas antigen expression in SCC-25 cells, as determined by immunocytochemistry and Western blotting, using an anti-Fas polyclonal antibody (Fas D) as primary antibody. Fas antigen was localized to the cytoplasm and the cell membrane. The molecular weight of the protein recognized by Western blot analysis was 35,000, consistent with the value reported for the Fas antigen. The CH-11 antibody did not induce Fas antigen expression in serum-containing medium. To determine whether CH-11 could induce apoptosis in oral squamous cell carcinoma, we examined its effects on the survival of cultured SCC-25 cells. Anti-Fas monoclonal antibody in serum-free medium induced cytotoxicity in SCC-25 cells in a time-dependent manner up to 8 h, as determined by phase-contrast microscopy and WST-1 assay. Marked nuclear condensation and fragmentation of chromatin were observed in the CH-11-treated cells using Hoechst 33342 staining. This anti-Fas monoclonal antibody also induced DNA ladder formation in SCC-25 cells in a time-dependent manner. The present results indicate that the anti-Fas monoclonal antibody (CH-11) may mediate apoptosis by binding to the Fas antigen expressed in SCC-25 cells.
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Tsuyama M, Kondoh T, Seto K, Fukuda J. Complications of temporomandibular joint arthroscopy: a retrospective analysis of 301 lysis and lavage procedures performed using the triangulation technique. J Oral Maxillofac Surg 2000; 58:500-5; discussion 505-6. [PMID: 10800905 DOI: 10.1016/s0278-2391(00)90010-7] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
PURPOSE This study evaluated the complications of temporomandibular joint (TMJ) arthroscopic lysis and lavage performed using the triangulation technique. PATIENTS AND METHODS The 202 consecutive patients (301 joints) who underwent arthroscopic lysis and lavage between 1992 and 1995 were retrospectively surveyed. The preoperative diagnosis of all patients was anterior disc displacement without reduction. RESULTS Complications were observed in 31 (10.3%) of 301 cases of arthroscopic lysis and lavage. Of these, otologic complications were found in 26 cases (8.6%): blood clots in the external auditory canal in 9; laceration of external auditory canal in 7; partial hearing loss in 5; ear fullness in 2; vertigo in 1; and perforation of tympanic membrane with laceration of external auditory canal in 1. Neurologic injuries were found in 5 cases (1.7%): fifth cranial nerve injuries in 3; and seventh cranial nerve injuries in 2. No other complications were observed. CONCLUSIONS A high level of understanding of the regional anatomy helps reduce the complications associated with arthroscopic lysis and lavage in the TMJ.
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Kumagai J, Fukuda J, Kodama H, Murata M, Kawamura K, Itoh H, Tanaka T. Germ cell-specific heat shock protein 105 binds to p53 in a temperature-sensitive manner in rat testis. EUROPEAN JOURNAL OF BIOCHEMISTRY 2000; 267:3073-8. [PMID: 10806408 DOI: 10.1046/j.1432-1033.2000.01336.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Heat shock protein (HSP)105 is a testis-specific and HSP90-related protein. The aim of this study was to explore the functions of HSP105 in the rat testis. Signals of HSP105 were detected immunohistochemically in the germ cells and translocated from the cytoplasm to the nucleus at 2 days after experimental induction of cryptorchidism. In cultured testicular germ cells, a significant increase in the expression of HSP105 in response to heat stress (37 degrees C) was detected in the insoluble protein fractions. Several binding proteins were isolated from rat testis using a HSP105 antibody immunoaffinity column, and p53, the tumor suppressor gene product, was copurified with these. Furthermore, immunoprecipitation using antibodies to p53 led to coprecipitation of HSP105 together with p53 after culturing germ cells at 32.5 degrees C, but not at 37 or 42 degrees C. In conclusion, HSP105 is specifically localized in the germ cells and may translocate into the nucleus after heat shock. HSP105 is suggested to form a complex with p53 at the scrotal temperature, and dissociate from it at suprascrotal temperatures. At scrotal temperature, HSP105 may thus contribute to the stabilization of p53 proteins in the cytoplasm of the germ cells, preventing the potential induction of apoptosis by p53.
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Ito I, Minegishi T, Fukuda J, Shinozaki H, Auersperg N, Leung PC. Presence of activin signal transduction in normal ovarian cells and epithelial ovarian carcinoma. Br J Cancer 2000; 82:1415-20. [PMID: 10780520 PMCID: PMC2363377 DOI: 10.1054/bjoc.1999.1127] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
In this study, we have investigated the expression of inhibin subunits and activin receptors (ActRs) in normal and malignant ovarian cells. Each product of the inhibin subunits (alpha, betaa, betab) and activin receptors (ActRs) amplified by reverse transcription polymerase chain reaction were detected as a single band in human granulosa cells, surface epithelial cells (OSE), and the ovarian cancer cell lines OVCAR 3 and SKOV 3. Western blot analysis was performed using polyclonal antibodies against ActR IIa or IIb peptides based on 13 COOH-terminal amino acids; cultured human granulosa cells were used as a positive control. Using ActR IIa antibody, one major band corresponding to approximately 80 kDa and one minor band corresponding to 105 kDa were observed in the samples. One single band at approximately 60 kDa was detected in OVCAR 3 and a 50 kDa band was detected with ActR IIb antibody in cultured granulosa cell, OSE and SKOV 3. Although no detectable change was induced in Smad 4 mRNA in OVCAR 3, Smad 2 mRNA levels were increased during 48 h treatment with activin A (50 ng ml(-1)). These data provide a better understanding as the first step in the mechanism of action of the activin in the epithelial ovarian carcinoma.
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Tominaga K, Yamada Y, Fukuda J. Changes in chewing pattern after surgically induced disc displacement in the rabbit temporomandibular joint. J Oral Maxillofac Surg 2000; 58:400-5. [PMID: 10759120 DOI: 10.1016/s0278-2391(00)90923-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
PURPOSE This study investigated whether surgically induced disc displacement (DD) in the rabbit temporomandibular joint leads to joint dysfunction. MATERIALS AND METHODS Fourteen adult Japanese white rabbits were divided into two groups. Eight animals had surgically induced DD, and 6 were used as a sham operation group. Jaw movement trajectories during chewing were recorded preoperatively and 2 weeks after induction of DD. Postoperative recordings after administration of a nonsteroidal anti-inflammatory drug (NSAID) were also performed to eliminate any influence of joint pain on chewing. Vertical and horizontal ranges of chewing movement, duration of the opening and closing phase, and total cycle of chewing were analyzed. Thereafter, the presence of induced DD was confirmed histologically. RESULTS In the sham group, the rhythm and pattern of chewing were almost the same as preoperatively. In the experimental group, increase in the cycle duration and decrease in the vertical and horizontal ranges of movement were observed. When the sham and experimental groups were compared, there was a decreased ratio of vertical movement in the experimental animals. There was no effect of preadministration of the NSAID in either the DD or sham group. All of the experimental animals had total anterior DD histologically. CONCLUSION Changes in the chewing pattern of the experimental animals occurred from mechanical interference of the displaced disc. This animal model can be used as a model for human internal derangement.
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Ota H, Tanaka JI, Murakami M, Murata M, Fukuda J, Tanaka T, Andoh H, Koyama K. Laparoscopy-assisted Ruge procedure for the creation of a neovagina in a patient with Mayer-Rokitansky-Küster-Hauser syndrome. Fertil Steril 2000; 73:641-4. [PMID: 10733306 DOI: 10.1016/s0015-0282(99)00570-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To describe the successful use of a laparoscopy-assisted Ruge procedure for the reconstruction of a vagina in a patient with Mayer-Rokitansky-Küster-Hauser syndrome. DESIGN Case report. SETTING A university hospital. PATIENT(S) A 19-year-old Japanese woman with Mayer-Rokitansky-Küster-Hauser syndrome. INTERVENTION(S) Creation of a neovagina by a laparoscopy-assisted Ruge technique. MAIN OUTCOME MEASURE(S) Clinical examinations were performed during the follow-up period. The depth and diameter of the neovagina were measured by vaginography. Patient satisfaction also was determined. RESULT(S) The neovagina was 12 cm in length and 4 cm in diameter. The mucosa of the neovagina was pinkish and had a moist surface. No intraoperative or postoperative complications were observed. CONCLUSION(S) The use of an isolated segment of the sigmoid colon for vaginal construction has the advantages of providing a sufficient length of neovagina and not requiring immediate postoperative self-dilatation. We believe that our procedure has various advantages in addition to those of the original Ruge method, including its minimally invasive nature and excellent cosmetic results. Further, a laparoscopy-assisted operation allows for the diagnosis of uterine defects and the creation of a neovagina at the same time.
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Kawamura K, Sekiguchi K, Shibata S, Fukuda J, Tanaka T. Primary psoas abscess during pregnancy. Acta Obstet Gynecol Scand 2000; 79:151-2. [PMID: 10696968 DOI: 10.1034/j.1600-0412.2000.079002151.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Fukuda J. Attraction of sensory fibers by Merkel cells during co-culture of sensory ganglia and hair follcies in collagen-gel. Neurosci Res 2000. [DOI: 10.1016/s0168-0102(00)81057-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Hebiguchi T, Kato T, Yoshino H, Mizuno M, Takahashi T, Fukuda J, Tanaka T. Biliary atresia with hyperandrogenic amenorrhea: case report. Pediatr Surg Int 2000; 16:113-5. [PMID: 10663856 DOI: 10.1007/s003830050034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The etiology of hyperandrogenic amenorrhea in a 16 year-old girl after a successful Kasai operation for biliary atresia was unclear. Delayed puberty and menarche were observed. There was no luteinizing hormone-follicular stimulating hormone surge. A provocative luteinizing hormone-releasing hormone test showed a normal response. Peripheral aromatization of androgens appeared to function normally. However, plasma levels of sex hormone-binding globulin and total testosterone were high and the free testosterone level was normal. The anovulatory menstrual cycle continued after menarche at 18 years of age. A combination of estrogen and progesterone therapy was effective. The etiology might be associated with delayed metabolic clearance of testosterone accompanied by the compensatory cirrhosis and portosystemic shunt.
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Ikeda M, Kodama H, Fukuda J, Shimizu Y, Murata M, Kumagai J, Tanaka T. Role of radical oxygen species in rat testicular germ cell apoptosis induced by heat stress. Biol Reprod 1999; 61:393-9. [PMID: 10411517 DOI: 10.1095/biolreprod61.2.393] [Citation(s) in RCA: 141] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
The present study was designed to clarify the role of radical oxygen species in testicular germ cell apoptosis induced by heat stress. Testicular cells isolated from immature rats were cultured with or without elevated temperature, and occurrence of apoptosis in these cells was defined by the appearance of DNA fragmentation following agarose gel electrophoresis and by flow cytometric quantification of apoptotic cells. At 32.5 degrees C, < 1% of cells showed signs of apoptosis throughout the culture period, whereas under heat stress, the proportion of apoptotic cells increased to 5% at 37 degrees C after 24 h of culture, or to 14% after 1-h exposure at 43 degrees C followed by 23-h culture at 32.5 degrees C. Similar to the effect of heat stress, exogenously supplied oxygen free radicals also induced apoptosis. In contrast, treatment with catalase significantly attenuated heat stress-induced apoptosis. Furthermore, heat stress of testicular cells was associated with an increased intracellular peroxide level as measured by a fluorescent probe, 2', 7'-dichlorofluorescin diacetate. In conclusion, our data indicate the involvement of radical oxygen species during testicular germ cell apoptosis induced by heat stress. This study provides a useful in vitro model for the study of testicular germ cell apoptosis.
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