1
|
Jaffar N, Okinaga T, Nishihara T, Maeda T. Enhanced phagocytosis of Aggregatibacter actinomycetemcomitans cells by macrophages activated by a probiotic Lactobacillus strain. J Dairy Sci 2018; 101:5789-5798. [DOI: 10.3168/jds.2017-14355] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 02/23/2018] [Indexed: 12/22/2022]
|
2
|
Yamamoto M, Iwanaga K, Okinaga T, Ariyoshi W, Tominaga K, Nishihara T. Application of combination bubble liposomal amphotericin B and sonication has the dramatic effect on oral candidiasis. Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology 2017. [DOI: 10.1016/j.ajoms.2016.11.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
3
|
Yeom KH, Ariyoshi W, Okinaga T, Washio A, Morotomi T, Kitamura C, Nishihara T. Platelet-rich plasma enhances the differentiation of dental pulp progenitor cells into odontoblasts. Int Endod J 2015; 49:271-8. [DOI: 10.1111/iej.12443] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Accepted: 02/19/2015] [Indexed: 01/09/2023]
Affiliation(s)
- K. H. Yeom
- Division of Infections and Molecular Biology; Department of Health Promotion; Kyushu Dental University; Kitakyushu Japan
- Division of Endodontics and Restorative Dentistry; Department of Science of Oral Functions; Kyushu Dental University; Kitakyushu Japan
| | - W. Ariyoshi
- Division of Infections and Molecular Biology; Department of Health Promotion; Kyushu Dental University; Kitakyushu Japan
| | - T. Okinaga
- Division of Infections and Molecular Biology; Department of Health Promotion; Kyushu Dental University; Kitakyushu Japan
| | - A. Washio
- Division of Endodontics and Restorative Dentistry; Department of Science of Oral Functions; Kyushu Dental University; Kitakyushu Japan
| | - T. Morotomi
- Division of Endodontics and Restorative Dentistry; Department of Science of Oral Functions; Kyushu Dental University; Kitakyushu Japan
| | - C. Kitamura
- Division of Endodontics and Restorative Dentistry; Department of Science of Oral Functions; Kyushu Dental University; Kitakyushu Japan
| | - T. Nishihara
- Division of Infections and Molecular Biology; Department of Health Promotion; Kyushu Dental University; Kitakyushu Japan
| |
Collapse
|
4
|
Ariyoshi W, Okinaga T, Knudson CB, Knudson W, Nishihara T. High molecular weight hyaluronic acid regulates osteoclast formation by inhibiting receptor activator of NF-κB ligand through Rho kinase. Osteoarthritis Cartilage 2014; 22:111-20. [PMID: 24185105 DOI: 10.1016/j.joca.2013.10.013] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Revised: 10/07/2013] [Accepted: 10/22/2013] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To determine the effects of high molecular weight hyaluronic acid (HMW-HA) on osteoclast differentiation by monocytes co-cultured with stromal cells. METHODS Mouse bone marrow stromal cell line ST2 cells were incubated with HMW-HA or 4-methylunbeliferone (4-MU) for various times. In some experiments, cells were pre-treated with the anti-CD44 monoclonal antibody (CD44 mAb) or Rho kinase pathway inhibitors (simvastatin or Y27632), then treated with HMW-HA. The expression of receptor activator of NF-κB ligand (RANKL) was determined using real-time reverse transcription polymerase chain reaction (RT-PCR), western blotting, and immunofluorescence microscopy, while the amount of active RhoA was measured by a pull-down assay. To further clarify the role of HMW-HA in osteoclastogenesis, mouse monocyte RAW 264.7 cells were co-cultured with ST2 cells pre-stimulated with 1,25(OH)2D3. Osteoclast-like cells were detected by staining with tartrate-resistant acid phosphatase (TRAP). RESULTS HMW-HA decreased RANKL mRNA and protein expressions, whereas inhibition of hyaluronic acid (HA) synthesis by 4-MU enhanced RANKL expression. Blockage of HA-CD44 binding by CD44 mAb suppressed HMW-HA-mediated inhibition of RANKL. Pull-down assay findings also revealed that HMW-HA transiently activated RhoA in ST2 cells and pre-treatment with CD44 mAb inhibited the activation of RhoA protein mediated by HMW-HA. Moreover pre-treatment with Rho kinase pathway inhibitors also blocked the inhibition of RANKL by HMW-HA. Co-culture system results showed that HMW-HA down-regulated differentiation into osteoclast-like cells by RAW 264.7 cells induced by 1,25(OH)2D3-stimulated ST2 cells. CONCLUSIONS These results indicated that HA-CD44 interactions down-regulate RANKL expression and osteoclastogenesis via activation of the Rho kinase pathway.
Collapse
Affiliation(s)
- W Ariyoshi
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, Kitakyushu, Fukuoka, Japan.
| | - T Okinaga
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, Kitakyushu, Fukuoka, Japan.
| | - C B Knudson
- Department of Anatomy and Cell Biology, The Brody School of Medicine, East Carolina University, Greenville, NC, USA.
| | - W Knudson
- Department of Anatomy and Cell Biology, The Brody School of Medicine, East Carolina University, Greenville, NC, USA.
| | - T Nishihara
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, Kitakyushu, Fukuoka, Japan.
| |
Collapse
|
5
|
Morishita M, Ariyoshi W, Okinaga T, Usui M, Nakashima K, Nishihara T. A. actinomycetemcomitans LPS Enhances Foam Cell Formation Induced by LDL. J Dent Res 2013; 92:241-6. [DOI: 10.1177/0022034512473309] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The objective of this study was to examine whether native low-density lipoprotein (LDL) induces foam cell formation by macrophages and to examine the effect of lipopolysaccharide (LPS) on native LDL-induced foam cell formation by macrophages in vitro. RAW 264.7 cells were cultured with LDL or high-density lipoprotein (HDL) in the presence of LPS derived from Aggregatibacter actinomycetemcomitans. Foam cell formation was determined by staining with Oil-red-O to visualize cytoplasmic lipid droplet accumulation. The expression of LDL-receptor and the degree of internalization of FITC-conjugated LDL in RAW 264.7 cells were examined by immunofluorescence microscopy. The images were digitally recorded and analyzed with Image J software. Statistical analysis was performed by JMP software. Foam cell formation was induced by the addition of native LDL in dose- and time-dependent manners, whereas HDL showed no effect. LPS enhanced the foam cell formation induced by native LDL. In addition, LPS stimulated the expression of LDL-receptor protein on RAW 264.7 cells and enhanced the internalization of LDL. The enhancement of foam cell formation induced by LPS and LDL was inhibited by the depolymerizing agent nocodazole and amiloride analog 5-(N-ethyl-N-isoprophyl) amiloride (EIPA). Our findings indicate that LPS plays an important role in foam cell formation by LDL-stimulated macrophages.
Collapse
Affiliation(s)
- M. Morishita
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, 2-6-1 Manazuru Kokurakita-ku, Kitakyushu 803-8580, Japan
- Division of Periodontology, Department of Oral Function, Kyushu Dental University, Kitakyushu 803-8580, Japan
| | - W. Ariyoshi
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, 2-6-1 Manazuru Kokurakita-ku, Kitakyushu 803-8580, Japan
| | - T. Okinaga
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, 2-6-1 Manazuru Kokurakita-ku, Kitakyushu 803-8580, Japan
| | - M. Usui
- Division of Periodontology, Department of Oral Function, Kyushu Dental University, Kitakyushu 803-8580, Japan
| | - K. Nakashima
- Division of Periodontology, Department of Oral Function, Kyushu Dental University, Kitakyushu 803-8580, Japan
| | - T. Nishihara
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, 2-6-1 Manazuru Kokurakita-ku, Kitakyushu 803-8580, Japan
| |
Collapse
|
6
|
Okinaga T, Xie Z, Niu G, Qi F, Merritt J. Examination of the hdrRM regulon yields insight into the competence system of Streptococcus mutans. Mol Oral Microbiol 2010; 25:165-77. [PMID: 20536745 DOI: 10.1111/j.2041-1014.2010.00574.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Previous studies have identified the hdrRM operon as a novel regulatory system induced by conditions of high cell density. Little is known about the genes under the control of this system, but a variety of important phenotypes are associated with either hdrR overexpression or mutation of hdrM. To characterize the regulatory function of the HdrRM system in Streptococcus mutans we used a microarray approach to compare the transcriptional profiles of an hdrR overexpression strain with an hdrM mutant. Both strains exhibited almost identical profiles, which included all of the known late competence genes as well as a variety of competence-induced bacteriocins. Through a combination of real-time reverse transcription-polymerase chain reaction (PCR), reporter gene analysis and random amplification of complementary DNA ends PCR, we confirmed the role of comX as a central intermediate regulator of numerous genes in the hdrRM regulon. Through these studies, we also identified novel comX-regulated genes required for natural competence. Taken together, our results suggest that the primary function of the HdrRM system is to regulate the late competence genes together with various bacteriocins. This occurs independently of the ComCDE system, even though both systems regulate nearly identical genes. This suggests that S. mutans has multiple parallel input sensory systems that control the same output response: the induction of natural competence and concurrent production of bacteriocins.
Collapse
Affiliation(s)
- T Okinaga
- Department of Oral Biology, College of Dentistry, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104-5419, USA
| | | | | | | | | |
Collapse
|
7
|
Okinaga T, Yamagishi T, Yoshii M, Suzuki T, Miyazaki A, Takagi M, Tsunemitsu H. Evaluation of unexpected positive results from a commercial ELISA for antibodies to PRRSV. Vet Rec 2009; 164:455-9. [PMID: 19363226 DOI: 10.1136/vr.164.15.455] [Citation(s) in RCA: 6] [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: 11/03/2022]
Abstract
Unexpected positive results from the widely used IDEXX ELISA for the detection of antibodies to porcine reproductive and respiratory syndrome virus (PRRSV) may confound investigations of the disease. Supplementing the ELISA with blocking agents and the use of IgG purified from serum samples had no effect on the unexpected positive results, suggesting that they were due to an antibody-antigen reaction. Simple competitive and blocking ELISAs were developed by modifying the IDEXX ELISA, and they and an indirect fluorescent antibody test (IFAT) were used to examine PRRSV antibodies in 33 antibody-negative, 88 antibody-positive and 73 unexpectedly positive sera. All the unexpectedly positive sera were negative by IFAT, and 89.0 per cent were negative by both the competitive and blocking ELISAs. The competitive ELISA (97.7 per cent) and the blocking ELISA (96.5 per cent) detected more positive sera than the IFAT (90.9 per cent). These results show that both ELISAs are capable of distinguishing positive and unexpectedly positive sera, and suggest that most of the unexpected positive signals are false-positives.
Collapse
Affiliation(s)
- T Okinaga
- Viral Diseases Research Team, National Institute of Animal Health, Kannondai, Tsukuba, Ibaraki 305-0856, Japan
| | | | | | | | | | | | | |
Collapse
|
8
|
Iwanaga K, Tominaga K, Yamamoto K, Habu M, Maeda H, Akifusa S, Tsujisawa T, Okinaga T, Fukuda J, Nishihara T. Local delivery system of cytotoxic agents to tumors by focused sonoporation. Cancer Gene Ther 2007; 14:354-63. [PMID: 17273182 DOI: 10.1038/sj.cgt.7701026] [Citation(s) in RCA: 108] [Impact Index Per Article: 6.4] [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: 12/22/2022]
Abstract
Recently, ultrasound-targeting microbubble destruction has been employed in molecular gene therapy, and a new potent nonviral gene transfer method known as 'sonoporation' has been developed. We investigated the efficiency of sonoporation toward growth inhibition of human gingival squamous carcinoma cell line, Ca9-22, in vitro and in vivo. The cytotoxicity of bleomycin (BLM) was investigated using flow-cytometric analysis and Hoechst's staining in vitro assay systems. We found that the delivery of BLM by sonoporation induced cytotoxic effect toward Ca9-22 cells in vitro. Our in vivo results showed that tumors nearly disappeared in Ca9-22 cell-implanted nude KSN/slc mice treated with a low dose of BLM followed by sonoporation during the 4-week experimental period. Histological analysis revealed that the cytotoxic effect was mainly apoptosis. We previously reported that the cytolethal distending toxin B (cdtB) from Actinobacillus actinomycetemcomitans, a periodontopathic bacterium, is responsible for cell cycle arrest and apoptosis in vitro. Thus, we used sonoporation to transfect a cdtB-expressing plasmid into Ca9-22 cells and examined cell viability in vitro and in vivo. We found that an administration of cdtB-expressing plasmid followed by sonoporation-induced marked growth inhibition of Ca9-22 cells and apoptotic cells were also observed in vitro and in vivo. These findings suggest that local administration of cytotoxic agents with sonoporation is a useful method for molecular cancer therapy.
Collapse
Affiliation(s)
- K Iwanaga
- Department of Health Promotion, Division of Infections and Molecular Biology, Kitakyushu, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Mano T, Takizawa S, Mohri I, Okinaga T, Shimono K, Imai K, Taniike M, Ozono K, Fujimura H. Neuronal intranuclear hyaline inclusion disease with rapidly progressive neurological symptoms. J Child Neurol 2007; 22:60-6. [PMID: 17608307 DOI: 10.1177/0883073807299952] [Citation(s) in RCA: 7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This report describes a male patient who presented with symptoms suggestive of spinocerebellar degeneration and who died of respiratory failure at the age of 7 years but was diagnosed, at autopsy, as having neuronal intranuclear hyaline inclusion disease. Neuronal intranuclear hyaline inclusion disease is a progressive and degenerative disease; diagnosis is possible only by neuropathological analysis. This is a rare disorder; few cases with early childhood onset and rapidly progressive neurologic symptoms have been documented. According to previous reports, most neurons in the central nervous system exhibited intranuclear eosinophilic inclusion bodies; neuronal depletion appeared to be restricted to the cerebellar cortex and the medullary inferior olivary nuclei, consistent with the fact that clinical deficit appears to correspond to the site of neuronal depletion and not to where eosinophilic bodies are detected. Immunohistochemical analysis revealed that these inclusions were positive for ubiquitin. The case presented herein clearly indicates that neuronal intranuclear hyaline inclusion disease should be considered as a differential diagnosis of cases involving spinocerebellar degeneration with childhood onset.
Collapse
Affiliation(s)
- T Mano
- Department of Pediatrics, Osaka General Medical Center, 3-1-56 Mandai Higashi, Sumiyoshi-Ku, Osaka City, Osaka, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Taniguchi M, Kurahashi H, Noguchi S, Sese J, Okinaga T, Tsukahara T, Guicheney P, Ozono K, Nishino I, Morishita S, Toda T. P.O.2 Expression profiling of muscles from Fukuyama-type congenital muscular dystrophy and laminin-alpha2 deficient congenital muscular dystrophy; is congenital muscular dystrophy a primary fibrotic disease? Neuromuscul Disord 2006. [DOI: 10.1016/j.nmd.2006.05.134] [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: 11/29/2022]
|
11
|
Reber AJ, Tanner M, Okinaga T, Woolums AR, Williams S, Ensley DT, Hurley DJ. Evaluation of multiple immune parameters after vaccination with modified live or killed bovine viral diarrhea virus vaccines. Comp Immunol Microbiol Infect Dis 2006; 29:61-77. [PMID: 16543046 DOI: 10.1016/j.cimid.2006.01.001] [Citation(s) in RCA: 23] [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] [Accepted: 12/16/2005] [Indexed: 11/21/2022]
Abstract
The development of immunity to vaccine antigen was examined using three prime/boost strategies and the progression of immune activities was evaluated over the course of 8 weeks. Calves were vaccinated and multiple immune parameters were evaluated using several methods to assess humoral or cellular immunity from the same samples in parallel. The three vaccination protocols used were a killed vaccine followed by a killed boost (killed/killed), MLV vaccine and boost (MLV/MLV), or a MLV vaccine and killed boost (MLV/killed). All the vaccines used included modified live IBR/PI3 viruses to make the bystander context as similar as possible. The Singer strain of BVDV was used as the source antigen in the killed vaccine, and the NADL strain of BVDV was used in the MLV vaccine. Controls received a vaccine containing only MLV IBR/PI3. The assessment panel measured SN titers, as well as lymphocyte proliferation, cytokine mRNA expression, intracellular cytokine production, and released IFN-gamma after in vitro stimulation with three strains of BVDV virus. MLV/MLV and MLV/killed groups developed significant SN titers to the type 1 BVDV virus strains, Singer and NADL, and low crossover titers were also seen to the type 2 strain, 890 over the evaluation period. These two groups showed significant proliferation in response to the NADL virus as compared to controls. Multiple immune assessments were conducted simultaneously to attempt to provide a broader, more in depth evaluation of immune response to these BVDV vaccination protocols. We observed that the correlation among most of the assays conducted were weak; the correlation between SN titers and cellular proliferation assays demonstrated a moderate correlation.
Collapse
MESH Headings
- Animals
- Antibodies, Viral/blood
- Bovine Virus Diarrhea-Mucosal Disease/immunology
- Bovine Virus Diarrhea-Mucosal Disease/prevention & control
- Cattle/immunology
- Cell Proliferation
- Diarrhea Viruses, Bovine Viral/genetics
- Diarrhea Viruses, Bovine Viral/immunology
- Interferon-gamma/blood
- Interferon-gamma/genetics
- Interleukins/blood
- Interleukins/genetics
- Leukocytes, Mononuclear/cytology
- Leukocytes, Mononuclear/immunology
- Neutralization Tests/veterinary
- RNA, Messenger/chemistry
- RNA, Messenger/genetics
- Reverse Transcriptase Polymerase Chain Reaction/veterinary
- Vaccination/veterinary
- Vaccines, Attenuated/immunology
- Vaccines, Attenuated/therapeutic use
- Vaccines, Inactivated/immunology
- Vaccines, Inactivated/therapeutic use
- Viral Vaccines/immunology
- Viral Vaccines/therapeutic use
Collapse
Affiliation(s)
- A J Reber
- Food Animal Health and Management Program, College of Veterinary Medicine, University of Georgia, Athens, GA 30602-7385, USA
| | | | | | | | | | | | | |
Collapse
|
12
|
Arita M, Nagayoshi M, Fukuizumi T, Okinaga T, Masumi S, Morikawa M, Kakinoki Y, Nishihara T. Microbicidal efficacy of ozonated water against Candida albicans adhering to acrylic denture plates. ACTA ACUST UNITED AC 2005; 20:206-10. [PMID: 15943763 DOI: 10.1111/j.1399-302x.2005.00213.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.3] [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: 11/30/2022]
Abstract
BACKGROUND/AIMS Ozone is known to act as a strong antimicrobial agent against bacteria, fungi, and viruses. We examined the effect of ozonated water on Candida albicans on acrylic denture plate. METHODS The heat-cured acrylic resins were cultured with C. albicans. After treatment of flowing ozonated water, the number of attached C. albicans was counted. In some experiments, the test samples were treated with ozonated water in combination with ultrasonication. RESULTS After exposure to flowing ozonated water (2 or 4 mg/l) for 1 min, viable C. albicans cells were nearly nonexistent. The combination of ozonated water and ultrasonication had a strong effect on the viability of C. albicans adhering to the acrylic resin plates. There were no significant differences in antimicrobial activity against C. albicans between plates immersed in ozonated water with ultrasonication and those treated with commercially available denture cleaners. In addition, electron microscopic analysis revealed that small amounts of C. albicans remained on the plate after exposure to flowing ozonated water or immersion in ozonated water with ultrasonication. CONCLUSION Our results suggest that application of ozonated water may be useful in reducing the number of C. albicans on denture plates.
Collapse
Affiliation(s)
- M Arita
- First Department of Prosthetic Dentistry, Kyushu Dental College, Kitakyushu, Japan
| | | | | | | | | | | | | | | |
Collapse
|
13
|
Suzuki Y, Imai K, Toribe Y, Ueda H, Yanagihara K, Shimono K, Okinaga T, Ono J, Nagai T, Matsuoka T, Tagawa T, Abe J, Morita Y, Fujikawa Y, Arai H, Mano T, Okada S. Long-term response to zonisamide in patients with West syndrome. Neurology 2002; 58:1556-9. [PMID: 12034801 DOI: 10.1212/wnl.58.10.1556] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The long-term effectiveness of zonisamide (ZNS) was evaluated in 11 patients with West syndrome (7 symptomatic) who had cessation of spasms with ZNS monotherapy. During the follow-up period (24 to 79 months, mean = 53 months), this response was maintained in 7 patients (3 symptomatic, relapse rate = 36%), including 2 children in whom ZNS was successfully discontinued. No serious adverse reactions were noted. ZNS may be both effective and well tolerated for the treatment of West syndrome.
Collapse
Affiliation(s)
- Y Suzuki
- Division of Pediatric Neurology, Osaka Medical Center and Research Institute for Maternal and Child Health, Murodo-cho, Izumi, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Abstract
The mammalian zona pellucida is an extracellular matrix surrounding the oocyte, and is composed of three major glycoproteins, ZP1, ZP2, and ZP3. Previous studies have suggested that the sperm receptor activity of the zona pellucida resides in specific oligosaccharide chains on the ZP3 glycoprotein. However, the nature of the terminal monosaccharide(s) on these glycosidic chains to which sperm bind is a matter of active debate. Evidence has been presented to support a role for at least three distinct monosaccharides in sperm binding, alpha-galactose, L-fucose on Lewis X structures, and beta-N-acetylglucosamine. Previous studies have shown that beta-N-acetylglucosamine is uniformly distributed throughout the zona matrix. In this study, we have investigated the expression and distribution of alpha-galactose and fucose moieties during the maturation of the zona pellucida in mouse, rat, and hamster. Interestingly, alpha-galactose residues are expressed only during later stages of zona secretion and, consequently, are confined to the inner portions of the mature zona pellucida in mouse and rat. In hamster, alpha-galactose residues are only detectable in the zona pellucida of ovulated eggs, and are not found in ovarian oocytes. Fucosyl residues linked to Lewis X glycosides are not detectable at any stage of zona maturation in these three species, whereas fucose linked to N-linked core oligosaccharides are present throughout the zona. These studies indicate a previously unappreciated heterogeneity in the composition of zona glycosides. The specific localization of alpha-galactose residues to the inner portions of the zona matrix suggest a role in the later stages of sperm penetration through the zona. Finally, due to their absence from the zona surface, alpha-galactose and Lewis X fucosyl residues are not likely to be mediators of primary sperm binding.
Collapse
Affiliation(s)
- M Avilés
- Department of Cell Biology, Medical School, University of Murcia, Murcia, Spain
| | | | | | | |
Collapse
|
15
|
Imai K, Mano T, Shimono K, Ueda H, Okinaga T, Yanagihara K, Li Z, Okada S. [Three cases of hypoactivity and poor appetite with zonisamide-induced metabolic acidosis]. No To Hattatsu 2000; 32:75-7. [PMID: 10655757] [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: 02/15/2023]
|
16
|
Ono J, Kurahashi H, Okinaga T, Mano T, Imai K, Inui K, Okada S. Interstitial deletion of 14q, 46, XY, del (14) (q24.3q32.1) associated with status nonepileptic myoclonia and delayed myelination. J Child Neurol 1999; 14:756-8. [PMID: 10593558 DOI: 10.1177/088307389901401116] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A Japanese boy with interstitial deletion of the long arm of chromosome 14, including band 14q31, is described. The characteristic dysmorphic facial features, such as dolichocephaly, bushy eyebrows, horizontal narrow palpebral fissures, long philtrum, etc, and mental and motor developmental delay were observed. Other characteristic clinical manifestations were anuresis and status nonepileptic myoclonia The finding of delayed myelination of the cerebral white matter was observed on magnetic resonance examination, suggesting that an unknown factor related to myelination in the central nervous system might be localized in band 14q31.
Collapse
Affiliation(s)
- J Ono
- Department of Pediatrics, Developmental Medicine, Osaka University Graduate School of Medicine, Suita, Japan.
| | | | | | | | | | | | | |
Collapse
|
17
|
Kurono S, Ohashi Y, Hiruma K, Okinaga T, Hoshi M, Hashimoto H, Nagai Y. Characterization of the sulfated fucose-containing trisaccharides by fast atom bombardment tandem mass spectrometry in the study of the acrosome reaction-inducing substance of the starfish, Asterias amurensis. J Mass Spectrom 1998; 33:35-44. [PMID: 9449830 DOI: 10.1002/(sici)1096-9888(199801)33:1<35::aid-jms607>3.0.co;2-i] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Fast atom bombardment mass spectrometry (FABMS) and collision-induced dissociation tandem mass spectrometry (CID-MS/MS) were applied to the investigation of the anomeric isomerism of synthetic trisaccharides consisting of xylose, galactose and sulfated fucose {Xyl1-->3Gal alpha 1-->3(4-OSO3Na)Fuc} and {Xyl1-->3Gal alpha 1-->4(3-OSO3Na)Fuc} and the linkage position of the sulfate group. It was possible to differentiate between various glycosidic linkages in several synthetic trisaccharides. The position of a sulfate group in synthetic methyl O-sulfo-alpha-L-fucopyranoside isomers was elucidated from the fragmentation patterns. Comparing the data from the synthetic sulfated trisaccharides with the spectra from the natural compound derived from glycan chains of the acrosome reaction-inducing substance (ARIS) from starfish, the anomeric structure and the position of the sulfate group in the natural sample were determined without ambiguity as Xyl beta 1-->3Gal alpha 1-->3(4-OSO3-)Fuc, in agreement with the result from an independent study based on nuclear magnetic resonance.
Collapse
Affiliation(s)
- S Kurono
- Glycobiology Research Group, Institute of Physical and Chemical Research (RIKEN), Saitama, Japan.
| | | | | | | | | | | | | |
Collapse
|
18
|
Sase I, Okinaga T, Hoshi M, Feigenson GW, Kinosita K. Regulatory mechanisms of the acrosome reaction revealed by multiview microscopy of single starfish sperm. J Biophys Biochem Cytol 1995; 131:963-73. [PMID: 7490297 PMCID: PMC2199994 DOI: 10.1083/jcb.131.4.963] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The acrosome reaction in many animals is a coupled reaction involving an exocytotic step and a dramatic change in cell shape. It has been proposed that these morphological changes are regulated by intracellular ions such as Ca2+ and H+. We report here simultaneous visualization, under a multiview microscope, of intracellular free Ca2+ concentration ([Ca2+]i), intracellular pH (pHi), and morphological changes in a single starfish sperm (Asterina pectinifera). [Ca2+]i and pHi were monitored with the fluorescent probes indo-1 and SNARF-1, respectively. The acrosome reaction was induced with ionomycin. After the introduction of ionomycin in the medium, [Ca2+]i increased gradually and reached a plateau in approximately 30 s. The fusion of the acrosomal vacuole took place abruptly before the plateau, during the rising phase. Although the speed of the [Ca2+]i increase varied among the many sperm tested, exocytosis in all cases occurred at the same [Ca2+]i of approximately 2 microM (estimated using the dissociation constant of indo-1 for Ca2+ of 1.1 microM). This result suggests that the exocytotic mechanism in starfish sperm responds to [Ca2+]i rapidly, with a reaction time of the order of one second or less. Unlike the change in [Ca2+]i, an abrupt increase in pHi was observed immediately after exocytosis, suggesting the presence of a proton mobilizing system that is triggered by exocytosis. The rapid increase in pHi coincided with the formation of the acrosomal rod and the beginning of vigorous movement of the flagellum, both of which have been proposed to be pHi dependent. The exocytotic event itself was visualized with the fluorescent membrane probe RH292. The membrane of the acrosomal vacuole, concealed from the external medium in an unreacted sperm, was seen to fuse with the plasma membrane.
Collapse
Affiliation(s)
- I Sase
- Department of Physics, Faculty of Science and Technology, Keio University, Yokohama, Japan
| | | | | | | | | |
Collapse
|
19
|
Ogiso M, Okinaga T, Ohta M, Komoto M, Hoshi M. Identification and synthetic pathway of sialyl-Lewisx-containing neolacto-series gangliosides in lens tissues. 1. Characterization of gangliosides in human senile cataractous lens. Biochim Biophys Acta 1995; 1256:166-74. [PMID: 7766694 DOI: 10.1016/0005-2760(95)00027-a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Human lens accumulates gangliosides in association with aging and senile cataract progression. In this study we purified and characterized five major gangliosides in human cataractous lenses. Structural analyses and immunological studies revealed the presence of ganglio-series gangliosides, GM3, GM2, GM1 and GD1a, and a sialyl-Lewisx-containing neolacto-series ganglioside, NeuAc alpha 2-3Gal beta 1-4(Fuc alpha 1-3)GlcNAc beta 1-3Gal beta 1-4Glc beta 1-1ceramide (IV3NeuAcIII3FucnLc4). Slow-moving gangliosides, although minor components, were also found to have sialyl-Lewisx-related structures, based on anti-Lewisx antiserum binding to their asialo forms. However, sialyl-paragloboside, a possible precursor of the sialyl-Lewisx ganglioside, was not identified.
Collapse
Affiliation(s)
- M Ogiso
- PRESTO, Research Development Corporation of Japan (JRDC), Tokyo
| | | | | | | | | |
Collapse
|
20
|
Hashimoto H, Katayama C, Goto M, Okinaga T, Kitahata S. Transgalactosylation catalyzed by alpha-galactosidase from Candida guilliermondii H-404. Biosci Biotechnol Biochem 1995; 59:619-23. [PMID: 7772826 DOI: 10.1271/bbb.59.619] [Citation(s) in RCA: 25] [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: 01/27/2023]
Abstract
The thermostable alpha-galactosidase from Candida guilliermondii H-404 synthesized self-transfer products in the absence of a suitable acceptor. The main self-transfer product, using melibiose as a donor substrate, was O-alpha-D-galactosyl-(1,6)-O-alpha-D-galactosyl-(1,6)-D-glucose. This enzyme had a wide acceptor specificity. D-Glucose, D-galactose, maltose, maltitol, and 1,4-butandiol were the most effective acceptors in the transgalactosylation catalyzed by this enzyme. The enzyme could also transfer alpha-galactosyl residues to pentoses (L-arabinose, D-xylose, and D-ribose) and methyl pentoses (D-fucose and L-rhamnose). The main transfer products to lactose, maltose, and sucrose as acceptors were identified as O-alpha-D-galactosyl-(1,6)-O-beta-D-galactosyl-(1,4)-D-glucose, O-alpha-D-galactosyl-(1,6)-O-alpha-D-glucosyl-(1,4)-D-glucose, and O-alpha-D-galactosyl-(1,6)-O-alpha-D-glucosyl-(1,2)-beta-D-fructoside (raffinose), respectively.
Collapse
Affiliation(s)
- H Hashimoto
- Osaka Municipal Technical Research Institute, Japan
| | | | | | | | | |
Collapse
|
21
|
Abstract
Rat lens was found to contain several neutral and acidic glycosphingolipids in lens epithelia, cortex and nucleus, and showed developmental changes in their content and localization. TLC-immunostaining of gangliosides revealed the enrichment of some ganglio-series gangliosides (GM3, GM1, GD3 and GD1b) in lens epithelia and the presence of GM3 and GD3 in the lens nucleus. Immunohistochemical studies confirmed the distribution of GM3 and GM1 in anterior lens epithelial cells and the cortex, with expression decreasing toward the lens nucleus. Immunoreaction to GD3 was more intense in the lens nucleus than in epithelial cells. In contrast, the expression of neolacto-series glycosphingolipids was restricted to the lens nucleus. In order to investigate the pathological changes of glycosphingolipids in cataract, galactose-induced cataractous lenses were examined. However, no significant changes were observed in the content and composition of glycosphingolipids. In addition, Lewisx epitopes found in human cataractous lenses were not detected in the cataractous lenses of galactosaemic rats and hereditary cataractous Emory mice.
Collapse
Affiliation(s)
- M Ogiso
- Cell and Information, PRESTO, Research Development Corporation of Japan, JRDC
| | | | | | | | | | | |
Collapse
|
22
|
Abstract
We previously reported that human lens accumulates gangliosides in association with aging and senile cataract progression. Structural analysis revealed that gangliosides in human cataractous lenses were composed of ganglio-series gangliosides, such as GM3, GM2, GM1 and GD1a, and sialyl-Lewisx-containing neolacto-series gangliosides. Although Lewisx-containing neolacto-series glycolipid was found to accumulate in association with aging and cataract progression, the sialyl-Lewisx gangliosides did not show much accumulation in individual lenses from subjects between 16 and 80 years old. The content of sialyl-Lewisx gangliosides was about two to four times higher than that of Lewisx glycolipids, suggesting the possibility that the increase in Le(x) glycolipid is partly due to the desialylation of sialyl-Le(x) gangliosides. On the other hand, the expression of ganglio-series gangliosides increased in an age-related manner. Thus, age-related changes in lens glycolipids may modify the cell-to-cell interaction induced by cell surface sugar chains, leading to the initiation and progression of cataract.
Collapse
Affiliation(s)
- M Ogiso
- PRESTO, Research Development Corporation of Japan (JRDC), Tokyo
| | | | | | | | | |
Collapse
|
23
|
Abstract
The carbohydrate epitope Gal alpha 1-3Gal-R (alpha-galactosyl epitope), which is detectable by its binding with Bandeiraea simplicifolia-IB4 lectin, was found in glycosphingolipids (GSLs), both neutral and acidic (gangliosides), from lens tissues of non-primate mammals, but not in those of human senile cataracts and Old World monkeys. Instead, human cataractous and Old World monkey non-cataractous lenses expressed Lewisx (Le(x)) epitopes (Gal beta 1-4(Fuc alpha 1-3)GlcNAc-R) in neutral GSLs. Sialylated Le(x) epitopes were found in rat and pig lenses as well as in human and Old World monkey lenses. Ganglio-series gangliosides, consisting mainly of GM3, GM1, GD1a and GD3, were detected in a species-specific fashion. On the other hand, alpha-galactosyl epitopes were expressed in lens tissues only in water-insoluble proteins of non-primate mammals, but Le(x) and sialylated Le(x) epitopes were not detectable in lens proteins. Among the several mammalian lenses examined, humans and Old World monkeys showed similar GSL compositions, in particular the presence of Le(x) and sialylated Le(x) epitopes and the absence of alpha-galactosyl epitopes, in lens tissue.
Collapse
Affiliation(s)
- M Ogiso
- Cell and Information, Presto, Research Development Corporation of Japan (JRDC), Tokyo
| | | | | | | | | |
Collapse
|
24
|
Matsui T, Mizuochi T, Titani K, Okinaga T, Hoshi M, Bousfield GR, Sugino H, Ward DN. Structural analysis of N-linked oligosaccharides of equine chorionic gonadotropin and lutropin beta-subunits. Biochemistry 1994; 33:14039-48. [PMID: 7524670 DOI: 10.1021/bi00251a012] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Equine chorionic gonadotropin (eCG) and lutropin (eLH) are composed of alpha- and beta-subunits with an identical amino acid sequence but show different biological activities. To elucidate the molecular difference between these gonadotropins, the structure of the N-linked oligosaccharides of each beta-subunit was determined. N-linked sugar chains, liberated as tritum-labeled oligosaccharides by hydrazinolysis followed by N-acetylation and reduction with NaB3H4, were neutralized by sialidase digestion and/or methanolytic desulfation. Neutralized oligosaccharides were fractionated by sequential chromatography on serial lectin affinity columns and on a Bio-Gel P-4 column. Each oligosaccharide structure was determined by sequential exoglycosidase digestion in conjunction with elution profiles on lectin columns and methylation analysis. Each beta-subunit contained a single N-glycosylation site, but a high degree of microheterogeneity was observed in the structure of its N-linked oligosaccharides. eCG beta contained mono-, bi-, tri-, and tetraantennary complex-type oligosaccharides in a ratio of 3:63:13:1. eCG beta oligosaccharides contained about 16% of the bisecting GlcNAc and about 20% of poly-N-acetyllactosamine structures. Elongation of N-acetyllactosamine units showed a preference to the Man alpha 1-->6 side rather than the Man alpha 1-->3 side. Triantennary chains had only a C-2, 4-branched structure. eLH beta contained only mono- and biantennary complex-type and hybrid-type oligosaccharides in a ratio of approximately 18:67:10. eLH beta also contained bisected structures in about 18%. Oligosaccharides derived from the sulfated fraction of eLH beta contained GalNAc residues at nonreducing termini. Oligosaccharides from the sialylated/sulfated fraction of eLH beta contained both Gal and GalNAc residues at nonreducing termini, and those GalNAc residues were preferentially distributed to the Man alpha 1-->3 side of the trimannosyl core. These results clearly indicate that eCG beta and eLH beta possess structurally distinct N-linked oligosaccharides in addition to different charge groups even though they have a protein moiety identical to each other. Our results suggest that the biological activity of these hormones might be modulated by its terminal charge groups and stem structures of carbohydrate moiety synthesized in different organs.
Collapse
Affiliation(s)
- T Matsui
- Division of Biomedical Polymer Science, Fujita Health University, Aichi, Japan
| | | | | | | | | | | | | | | |
Collapse
|
25
|
Hoshi M, Nishigaki T, Ushiyama A, Okinaga T, Chiba K, Matsumoto M. Egg-jelly signal molecules for triggering the acrosome reaction in starfish spermatozoa. Int J Dev Biol 1994; 38:167-74. [PMID: 7981026] [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: 01/28/2023]
Abstract
It was in the early 1950s that J.C. Dan discovered the acrosome reaction in sea urchins, starfishes and several other marine invertebrates at Misaki Marine Biological Station on the Pacific coast of Japan. We now know that in many animals including mammals the acrosome reaction is an essential, and probably the most central, change in spermatozoa for fertilization. Starfish spermatozoa undergo the acrosome reaction upon encountering the jelly coat consisting of glycoproteins, steroid saponins, oligopeptides and inorganic components. To induce the acrosome reaction, three egg jelly components act in concert on the spermatozoa: a highly sulfated glycoprotein named acrosome reaction-inducing substance (ARIS), a group of sulfated steroidal saponins named Co-ARIS, and a group of glutamine-rich tetratriacontapeptides named sperm activating peptide (SAP). The action of ARIS is quite species-specific due to the specificity of ARIS-receptors in a restricted domain of the sperm surface and depends very much on sulfated saccharide chains. Co-ARIS is not much species-specific and its action depends on the sulfate group and steroid side chain. SAPs have a ring of 25 residues and increase the intracellular pH of spermatozoa. None of them can induce the acrosome reaction by itself in normal sea water, but ARIS does induce it in high Ca2+ or high pH sea water. Although a combination of ARIS and either Co-ARIS or SAP induces the acrosome reaction in normal sea water, all three are required to mimic the full activity of dissolved jelly coat.
Collapse
Affiliation(s)
- M Hoshi
- Department of Life Science, Tokyo Institute of Technology, Yokohama, Japan
| | | | | | | | | | | |
Collapse
|
26
|
Ogiso M, Ohta M, Okinaga T, Hoshi M, Komoto M, Asano K, Takehana M. Glycosphingolipids in cultured lens epithelial cells from dog and rhesus monkey. Glycobiology 1994; 4:375-82. [PMID: 7949663 DOI: 10.1093/glycob/4.3.375] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Vertebrate lens tissues contain several species of acidic and neutral glycosphingolipids in relatively high amounts. However, the epithelia with capsule from dog and rhesus monkey lenses had a simpler composition and lower content of glycosphingolipids than whole lenses. Gangliosides and neutral glycosphingolipids in monolayer cultures of lens epithelial cells were also different from those in whole lenses. Although alpha-galactosyl (Gal alpha 1-3Gal-R) or Lewis(x) (Gal beta 1-4[Fuc alpha 1-3]GlcNAc-R) epitopes were found in glycosphingolipids from whole lenses, they were not detected in those from monolayer cultures of dog and rhesus monkey lens cells. In addition, significant changes in ganglio-series gangliosides were induced in monolayer cultures of both cells, where GM3 and GD3 were predominant. Immunofluorescence study revealed a characteristic distribution of cell surface gangliosides in confluent monolayers. These findings suggest that glycosphingolipid synthesis in lens epithelia is intrinsically different from that in cortical and nuclear fibres, and that the expression of Lewis(x) and alpha-galactosyl epitopes in glycosphingolipids appears to be associated with the differentiation of epithelial cells to fibres.
Collapse
Affiliation(s)
- M Ogiso
- PRESTO, Research Development Corporation of Japan (JRDC), Tokyo
| | | | | | | | | | | | | |
Collapse
|
27
|
Okinaga T, Hoshi M. S8.20 Structure and activity of the carbohydrate chains in acrosome reaction-inducing substance of starfish eggs. Glycoconj J 1993. [DOI: 10.1007/bf01209962] [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: 11/29/2022]
|
28
|
Amano T, Okita Y, Okinaga T, Matsui T, Nishiyama I, Hoshi M. Egg jelly components responsible for histone degradation and acrosome reaction in the starfish, Asterina pectinifera. Biochem Biophys Res Commun 1992; 187:274-8. [PMID: 1520308 DOI: 10.1016/s0006-291x(05)81488-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [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: 12/27/2022]
Abstract
In the starfish, Asterina pectinifera, egg jelly induces the degradation of sperm histones as well as the acrosome reaction. We have isolated histone degradation-inducing components from the egg jelly. The histone degradation and the acrosome reaction are induced by a co-operative action of ARIS, which is an extremely large, sulfated glycoprotein with diffusible substance(s) in the jelly. Co-ARIS I, a steroidal saponin of the jelly, is effective to induce both reactions in the presence of ARIS.
Collapse
Affiliation(s)
- T Amano
- Department of Life Science, Tokyo Institute of Technology, Yokohama, Japan
| | | | | | | | | | | |
Collapse
|
29
|
Okinaga T, Ohashi Y, Hoshi M. A novel saccharide structure, Xyl 1----3 Gal 1----(SO3-)3,4 Fuc----, is present in acrosome reaction-inducing substance of the starfish, Asterias amurensis. Biochem Biophys Res Commun 1992; 186:405-10. [PMID: 1632780 DOI: 10.1016/s0006-291x(05)80822-8] [Citation(s) in RCA: 12] [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: 12/28/2022]
Abstract
The jelly coat of echinoderm eggs contains a glycoconjugate, acrosome reaction-inducing substance (ARIS), that is essential for triggering the acrosome reaction in homologous spermatozoa. In the starfish, Asterias amurensis, ARIS is a sulfated glycoprotein of an apparent molecular size of greater than 10(7). Since its biological activity is dependent mostly on its sugar moiety, oligosaccharides liberated by hydrolysis with 10 mM H2SO4 for 60 min at 100 degrees C from pronase digests of ARIS (P-ARIS) were chemically analyzed. The main oligosaccharide purified by high-performance anion-exchange chromatography was determined to be Xyl1----3Gal1----(SO3-)3,4Fuc by compositional analysis and FAB mass spectrometry. This structure indicates that ARIS possesses a novel saccharide chain having sulfated fucose as an internal residue.
Collapse
Affiliation(s)
- T Okinaga
- Department of Life Science, Faculty of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama, Japan
| | | | | |
Collapse
|
30
|
Yamaoka K, Yamada K, Toyoshima A, Yasuda K, Ikeda R, Okinaga M, Nakagawa S, Okinaga T. [Effects of CDDP on the serum LDH isozymes in rabbits and patients with gallbladder cancer in urinary organs]. Gan To Kagaku Ryoho 1986; 13:3546-8. [PMID: 3789764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
31
|
Ohtake H, Sakai Y, Morita S, Bussaka Y, Kikuchi S, Okinaga T, Oshibuchi M, Umezaki N. An experimental study of the effects of radiation on growing bone by bone scintigraphy. Kurume Med J 1986; 33:143-8. [PMID: 3599872 DOI: 10.2739/kurumemedj.33.143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
32
|
Shirai S, Okinaga T, Dannoura R, Bussaka Y, Oshibuchi M, Kikuchi S, Morita S, Ohtake H. [Localization of technetium-99m methylene diphosphonate in hepatocellular carcinoma--a report of two cases]. Kaku Igaku 1985; 22:1721-5. [PMID: 3007824] [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: 01/03/2023]
|
33
|
Shirai S, Okinaga T, Tsuru H, Fukushima M, Sakai Y, Koganemaru M, Ohtake H, Nakahara T, Kohfuji K. [A case of amelanotic malignant melanoma]. Rinsho Hoshasen 1983; 28:507-10. [PMID: 6887599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
34
|
Morita S, Kikuchi S, Nishi F, Okinaga T, Moriguchi Y, Bussaka Y, Umezaki N, Yano K, Ohtake H, Kojiro M, Kawasaki H. [Distribution of 67Ga-citrate in 3'-methyl-4-dimethylaminoazobenzene-induced hepatoma of rats]. Radioisotopes 1982; 31:459-62. [PMID: 6818620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The distribution of 67Ga-citrate in the hepatoma of rat induced by 3'-methyl-4-dimethylaminoazobenzene was studied. 67Ga uptake ratio resected specimen, autoradiography and histological specimen were compared each other. 67Ga uptake ratio of the tumor was increased 1.6 to 7.2 times (average 4.4) to control group. Regardless of the size of the tumor, macroautoradiographically observed distribution of 67Ga-citrate in the hepatoma was higher in the peripheral zone than in the central zone. Histologically the degeneration of tumor cell was low or absent in the peripheral zone of tumor, whereas it was intense in the central zone. 67Ga-citrate was highly accumulated in the zone which the degeneration was low or absent. We, however, could not demonstrate the site where 67Ga-citrate was incorporated.
Collapse
|
35
|
Ota M, Okinaga T, Kikuchi S, Hamada M, Koganemaru M, Otake H, Horiuchi M, Jimi A. [A case of mediastinal Castleman's tumor (author's transl)]. Rinsho Hoshasen 1982; 27:111-4. [PMID: 7077840] [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: 01/23/2023]
|
36
|
Fukushima M, Okinaga T, Akagawa H, Koganemaru M, Ohtake H, Fukushima H, Ohtsu N, Nagata N. [Primary early malignant lymphoma of the stomach]. Rinsho Hoshasen 1981; 26:1409-12. [PMID: 7186957] [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: 01/23/2023]
|