LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 262

Search options

  1. Article ; Online: Preface. Patenting and related patenting activities.

    Mizushina, Yoshiyuki

    Recent patents on food, nutrition & agriculture

    2014  Volume 6, Issue 1, Page(s) 1

    MeSH term(s) Biotechnology ; Humans ; Patents as Topic
    Language English
    Publishing date 2014-10-10
    Publishing country United Arab Emirates
    Document type Introductory Journal Article
    ZDB-ID 2486959-4
    ISSN 1876-1429 ; 2212-7984
    ISSN (online) 1876-1429
    ISSN 2212-7984
    DOI 10.2174/221279840601141210114453
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Specific inhibitors of mammalian DNA polymerase species.

    Mizushina, Yoshiyuki

    Bioscience, biotechnology, and biochemistry

    2009  Volume 73, Issue 6, Page(s) 1239–1251

    Abstract: In screening of selective inhibitors of eukaryotic DNA polymerases (pols) for 15 years, more than 100 inhibitors have been discovered from natural and chemical sources. Some compounds selectively inhibit the activities of mammalian pols, and in ... ...

    Abstract In screening of selective inhibitors of eukaryotic DNA polymerases (pols) for 15 years, more than 100 inhibitors have been discovered from natural and chemical sources. Some compounds selectively inhibit the activities of mammalian pols, and in particular, dehydroaltenusin and curcumin derivatives, such as monoacetyl-curcumin, were found to be specific inhibitors of pol alpha and pol lambda, respectively. Dehydroaltenusin was isolated from a fungus (Alternaria tennuis), and this compound inhibited cell proliferation of human cancer cell lines by arresting the cells at the S-phase, and was effective in suppressing the growth on nude mice of solid tumors of human cervical cancer cell line HeLa. Curcumin derivatives had anti-12-O-tetradecanoylphorbol-13-acetate (TPA)-induced inflammatory activity with the same tendency as pol lambda inhibitory activity. These compounds might be useful not only as "molecular probes" for pol research, but also as biomedical and chemotherapeutic drugs for anti-cancer or anti-inflammation.
    MeSH term(s) Animals ; Enzyme Inhibitors/pharmacology ; Humans ; Mammals ; Mice ; Mice, Nude ; Nucleic Acid Synthesis Inhibitors
    Chemical Substances Enzyme Inhibitors ; Nucleic Acid Synthesis Inhibitors
    Language English
    Publishing date 2009-06
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 1106450-x
    ISSN 1347-6947 ; 0916-8451
    ISSN (online) 1347-6947
    ISSN 0916-8451
    DOI 10.1271/bbb.90121
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Immunoglobulin G4-related Pleuritis Complicated with Minimal Change Disease.

    Mizushina, Yoshiko / Shiihara, Jun / Nomura, Motoko / Ohta, Hiromitsu / Ohyanagi, Fumiyoshi / Morishita, Yoshiyuki / Tsubochi, Hiroyoshi / Tanaka, Akira / Yamaguchi, Yasuhiro

    Internal medicine (Tokyo, Japan)

    2021  Volume 61, Issue 5, Page(s) 723–728

    Abstract: A 70-year-old woman with bilateral pleural effusion and respiratory failure was admitted to our hospital. Nephrotic syndrome due to minimal change disease had been diagnosed four months before admission. Because blood tests and a pleural fluid analysis ... ...

    Abstract A 70-year-old woman with bilateral pleural effusion and respiratory failure was admitted to our hospital. Nephrotic syndrome due to minimal change disease had been diagnosed four months before admission. Because blood tests and a pleural fluid analysis did not reveal the etiology of her condition, we performed a video-assisted thoracoscopic pleural biopsy. No specific thoracoscopic findings were noted. The pathological findings revealed an increase in immunoglobulin G4 (IgG4)-positive cells; IgG4-related pleuritis was diagnosed. Her pleuritis improved with oral corticosteroid therapy. A further investigation was performed on previous kidney samples; however, the etiology of the nephrotic syndrome was not IgG4-related disease but minimal change disease.
    MeSH term(s) Aged ; Female ; Humans ; Immunoglobulin G ; Nephrosis, Lipoid/complications ; Nephrosis, Lipoid/diagnosis ; Nephrosis, Lipoid/pathology ; Pleura/pathology ; Pleural Effusion/etiology ; Pleural Effusion/pathology ; Pleurisy/complications ; Pleurisy/diagnosis
    Chemical Substances Immunoglobulin G
    Language English
    Publishing date 2021-09-04
    Publishing country Japan
    Document type Case Reports ; Journal Article
    ZDB-ID 32371-8
    ISSN 1349-7235 ; 0021-5120 ; 0918-2918
    ISSN (online) 1349-7235
    ISSN 0021-5120 ; 0918-2918
    DOI 10.2169/internalmedicine.7010-20
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Identification of pheophorbide a as an inhibitor of receptor for advanced glycation end products in Mallotus japonicus.

    Matsumoto, Teruki / Matsuno, Michiyo / Ikui, Norihito / Mizushina, Yoshiyuki / Omiya, Yume / Ishibashi, Rikako / Ueda, Taro / Mizukami, Hajime

    Journal of natural medicines

    2021  Volume 75, Issue 3, Page(s) 675–681

    Abstract: Accumulation of advanced glycation end products (AGEs) plays an important role in diabetes, immunoinflammation, and cardiovascular and neurodegenerative diseases. Since AGEs mediate their pathological effects through interaction with receptor for AGEs ( ... ...

    Abstract Accumulation of advanced glycation end products (AGEs) plays an important role in diabetes, immunoinflammation, and cardiovascular and neurodegenerative diseases. Since AGEs mediate their pathological effects through interaction with receptor for AGEs (RAGE), RAGE antagonists would provide a useful therapeutic option for various health disorders. Therefore, in this study, we aimed to identify phytochemicals that would inhibit binding of AGEs to RAGE, which may help develop new drug leads and/or nutraceuticals for AGE-RAGE-related diseases. On screening ethanol extracts obtained from 700 plant materials collected in Myanmar, we found that the ethanol extract from the leaves of Mallotus philippensis inhibited the binding of AGEs to RAGE. We also found that the leaves of M. japonicus, which belongs to the same genera and distributes abundantly in Japan, exhibited the inhibitory activity similar to M. philippensis. Activity-guided fractionation and LC/MS analysis of the ethanol extract of M. japonicus helped identify pheophorbide a (PPBa) as a major component in the active fraction, along with some other pheophorbide derivatives. PPBa exhibited potent inhibitory activity against AGE-RAGE binding, with an IC
    MeSH term(s) Chlorophyll/analogs & derivatives ; Chlorophyll/pharmacology ; Glycation End Products, Advanced/metabolism ; Humans ; Mallotus Plant/chemistry ; Myanmar ; Phytochemicals/pharmacology ; Plant Leaves/chemistry ; Receptor for Advanced Glycation End Products/antagonists & inhibitors
    Chemical Substances Glycation End Products, Advanced ; Phytochemicals ; Receptor for Advanced Glycation End Products ; Chlorophyll (1406-65-1) ; pheophorbide a (IA2WNI2HO2)
    Language English
    Publishing date 2021-02-24
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 2227540-X
    ISSN 1861-0293 ; 1340-3443
    ISSN (online) 1861-0293
    ISSN 1340-3443
    DOI 10.1007/s11418-021-01495-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: The Establishment of an Assay to Measure DNA Polymerase-Catalyzed Repair of UVB-Induced DNA Damage in Skin Cells and Screening of DNA Polymerase Enhancers from Medicinal Plants.

    Ikeoka, Sawako / Nakahara, Tatsuo / Iwahashi, Hiroyasu / Mizushina, Yoshiyuki

    International journal of molecular sciences

    2016  Volume 17, Issue 5

    Abstract: An in vitro assay method was established to measure the activity of cellular DNA polymerases (Pols) in cultured normal human epidermal keratinocytes (NHEKs) by modifying Pol inhibitor activity. Ultraviolet (UV) irradiation enhanced the activity of Pols, ... ...

    Abstract An in vitro assay method was established to measure the activity of cellular DNA polymerases (Pols) in cultured normal human epidermal keratinocytes (NHEKs) by modifying Pol inhibitor activity. Ultraviolet (UV) irradiation enhanced the activity of Pols, especially DNA repair-related Pols, in the cell extracts of NHEKs. The optimal ultraviolet B (UVB) exposure dose and culture time to upregulate Pols activity was 100 mJ/cm² and 4-h incubation, respectively. We screened eight extracts of medicinal plants for enhancement of UVB-exposed cellular Pols activity using NHEKs, and found that rose myrtle was the strongest Pols enhancer. A Pols' enhancement compound was purified from an 80% ethanol extract of rose myrtle, and piceatannol was isolated by spectroscopic analysis. Induction of Pol activity involved synergy between UVB irradiation and rose myrtle extract and/or piceatannol. Both the extract and piceatannol reduced UVB-induced cyclobutane pyrimidine dimer production, and prevented UVB-induced cytotoxicity. These results indicate that rose myrtle extract and piceatannol, its component, are potential photo-protective candidates for UV-induced skin damage.
    MeSH term(s) Cell Line ; DNA Damage ; DNA Repair/drug effects ; DNA-Directed DNA Polymerase/metabolism ; Humans ; Keratinocytes/drug effects ; Keratinocytes/metabolism ; Keratinocytes/radiation effects ; Plant Extracts/pharmacology ; Plants, Medicinal/chemistry ; Ultraviolet Rays/adverse effects
    Chemical Substances Plant Extracts ; DNA-Directed DNA Polymerase (EC 2.7.7.7)
    Language English
    Publishing date 2016-05-04
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms17050667
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article: Specific Inhibitors of Mammalian DNA Polymerase Species

    MIZUSHINA, Yoshiyuki

    Bioscience, biotechnology, and biochemistry. 2009 June 23, v. 73, no. 6

    2009  

    Abstract: In screening of selective inhibitors of eukaryotic DNA polymerases (pols) for 15 years, more than 100 inhibitors have been discovered from natural and chemical sources. Some compounds selectively inhibit the activities of mammalian pols, and in ... ...

    Abstract In screening of selective inhibitors of eukaryotic DNA polymerases (pols) for 15 years, more than 100 inhibitors have been discovered from natural and chemical sources. Some compounds selectively inhibit the activities of mammalian pols, and in particular, dehydroaltenusin and curcumin derivatives, such as monoacetyl-curcumin, were found to be specific inhibitors of pol α and pol λ, respectively. Dehydroaltenusin was isolated from a fungus (Alternaria tennuis), and this compound inhibited cell proliferation of human cancer cell lines by arresting the cells at the S-phase, and was effective in suppressing the growth on nude mice of solid tumors of human cervical cancer cell line HeLa. Curcumin derivatives had anti-12-O-tetradecanoylphorbol-13-acetate (TPA)-induced inflammatory activity with the same tendency as pol λ inhibitory activity. These compounds might be useful not only as “molecular probes” for pol research, but also as biomedical and chemotherapeutic drugs for anti-cancer or anti-inflammation.
    Keywords Alternaria ; DNA ; DNA-directed DNA polymerase ; biotechnology ; cell proliferation ; curcumin ; drug therapy ; fungi ; humans ; neoplasm cells ; uterine cervical neoplasms
    Language English
    Dates of publication 2009-0623
    Size p. 1239-1251.
    Publishing place Japan Society for Bioscience, Biotechnology, and Agrochemistry
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 1106450-x
    ISSN 1347-6947 ; 0916-8451
    ISSN (online) 1347-6947
    ISSN 0916-8451
    DOI 10.1271/bbb.90121
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  7. Article: Identification of pheophorbide a as an inhibitor of receptor for advanced glycation end products in Mallotus japonicus

    Matsumoto, Teruki / Matsuno, Michiyo / Ikui, Norihito / Mizushina, Yoshiyuki / Omiya, Yume / Ishibashi, Rikako / Ueda, Taro / Mizukami, Hajime

    Natural medicines. 2021 June, v. 75, no. 3

    2021  

    Abstract: Accumulation of advanced glycation end products (AGEs) plays an important role in diabetes, immunoinflammation, and cardiovascular and neurodegenerative diseases. Since AGEs mediate their pathological effects through interaction with receptor for AGEs ( ... ...

    Abstract Accumulation of advanced glycation end products (AGEs) plays an important role in diabetes, immunoinflammation, and cardiovascular and neurodegenerative diseases. Since AGEs mediate their pathological effects through interaction with receptor for AGEs (RAGE), RAGE antagonists would provide a useful therapeutic option for various health disorders. Therefore, in this study, we aimed to identify phytochemicals that would inhibit binding of AGEs to RAGE, which may help develop new drug leads and/or nutraceuticals for AGE–RAGE-related diseases. On screening ethanol extracts obtained from 700 plant materials collected in Myanmar, we found that the ethanol extract from the leaves of Mallotus philippensis inhibited the binding of AGEs to RAGE. We also found that the leaves of M. japonicus, which belongs to the same genera and distributes abundantly in Japan, exhibited the inhibitory activity similar to M. philippensis. Activity-guided fractionation and LC/MS analysis of the ethanol extract of M. japonicus helped identify pheophorbide a (PPBa) as a major component in the active fraction, along with some other pheophorbide derivatives. PPBa exhibited potent inhibitory activity against AGE–RAGE binding, with an IC₅₀ value (0.102 μM) comparable to that of dalteparin (0.084 μM). PPBa may be a valuable natural product for use as a therapeutic agent and/or a nutraceutical against various health complications arising from activation of the AGE–RAGE axis.
    Keywords Japan ; Mallotus japonicus ; Mallotus philippensis ; diabetes ; dietary supplements ; ethanol ; fractionation ; phytochemicals ; therapeutics ; Myanmar
    Language English
    Dates of publication 2021-06
    Size p. 675-681.
    Publishing place Springer Singapore
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 1201350-x
    ISSN 1340-3443
    ISSN 1340-3443
    DOI 10.1007/s11418-021-01495-0
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  8. Article ; Online: The Establishment of an Assay to Measure DNA Polymerase-Catalyzed Repair of UVB-Induced DNA Damage in Skin Cells and Screening of DNA Polymerase Enhancers from Medicinal Plants

    Sawako Ikeoka / Tatsuo Nakahara / Hiroyasu Iwahashi / Yoshiyuki Mizushina

    International Journal of Molecular Sciences, Vol 17, Iss 5, p

    2016  Volume 667

    Abstract: An in vitro assay method was established to measure the activity of cellular DNA polymerases (Pols) in cultured normal human epidermal keratinocytes (NHEKs) by modifying Pol inhibitor activity. Ultraviolet (UV) irradiation enhanced the activity of Pols, ... ...

    Abstract An in vitro assay method was established to measure the activity of cellular DNA polymerases (Pols) in cultured normal human epidermal keratinocytes (NHEKs) by modifying Pol inhibitor activity. Ultraviolet (UV) irradiation enhanced the activity of Pols, especially DNA repair-related Pols, in the cell extracts of NHEKs. The optimal ultraviolet B (UVB) exposure dose and culture time to upregulate Pols activity was 100 mJ/cm2 and 4-h incubation, respectively. We screened eight extracts of medicinal plants for enhancement of UVB-exposed cellular Pols activity using NHEKs, and found that rose myrtle was the strongest Pols enhancer. A Pols’ enhancement compound was purified from an 80% ethanol extract of rose myrtle, and piceatannol was isolated by spectroscopic analysis. Induction of Pol activity involved synergy between UVB irradiation and rose myrtle extract and/or piceatannol. Both the extract and piceatannol reduced UVB-induced cyclobutane pyrimidine dimer production, and prevented UVB-induced cytotoxicity. These results indicate that rose myrtle extract and piceatannol, its component, are potential photo-protective candidates for UV-induced skin damage.
    Keywords DNA polymerases ; enzyme enhancer ; normal human epidermal keratinocytes (NHEK) ; ultraviolet B (UVB) ; rose myrtle ; piceatannol ; Biology (General) ; QH301-705.5 ; Chemistry ; QD1-999
    Subject code 571
    Language English
    Publishing date 2016-05-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  9. Article ; Online: Screening of mammalian DNA polymerase and topoisomerase inhibitors from Garcinia mangostana L. and analysis of human cancer cell proliferation and apoptosis.

    Onodera, Takefumi / Takenaka, Yukiko / Kozaki, Sachiko / Tanahashi, Takao / Mizushina, Yoshiyuki

    International journal of oncology

    2016  Volume 48, Issue 3, Page(s) 1145–1154

    Abstract: We purified and identified eight xanthones from mangosteen (Garcinia mangostana L.) and investigated whether these compounds inhibited the activities of mammalian DNA polymerases (Pols) and human DNA topoisomerases (Topos). β-Mangostin was the strongest ... ...

    Abstract We purified and identified eight xanthones from mangosteen (Garcinia mangostana L.) and investigated whether these compounds inhibited the activities of mammalian DNA polymerases (Pols) and human DNA topoisomerases (Topos). β-Mangostin was the strongest inhibitor of both mammalian Pols and human Topos among the isolated xanthones, with 50% inhibitory concentration (IC50) values of 6.4-39.6 and 8.5-10 µM, respectively. Thermal transition analysis indicated that β-mangostin did not directly bind to double-stranded DNA, suggesting that this compound directly bound the enzyme protein rather than the DNA substrate. β-Mangostin showed the strongest suppression of human cervical cancer HeLa cell proliferation among the eight compounds tested, with a 50% lethal dose (LD50) of 27.2 µM. This compound halted cell cycle in S phase at 12-h treatment and induced apoptosis. These results suggest that decreased proliferation by β-mangostin may be a result of the inhibition of cellular Pols rather than Topos, and β-mangostin might be an anticancer chemotherapeutic agent.
    MeSH term(s) Animals ; Antineoplastic Agents/chemistry ; Apoptosis ; Caspase 3/metabolism ; Cattle ; Cell Cycle ; Cell Proliferation ; DNA/chemistry ; DNA, Single-Stranded/chemistry ; DNA-Directed DNA Polymerase/metabolism ; Garcinia mangostana/chemistry ; HeLa Cells ; Humans ; Indoles/chemistry ; Inhibitory Concentration 50 ; Neoplasms/drug therapy ; Neoplasms/metabolism ; Nucleic Acid Synthesis Inhibitors/chemistry ; Rats ; Topoisomerase Inhibitors/chemistry ; Xanthones/chemistry
    Chemical Substances Antineoplastic Agents ; DNA, Single-Stranded ; Indoles ; Nucleic Acid Synthesis Inhibitors ; Topoisomerase Inhibitors ; Xanthones ; DAPI (47165-04-8) ; DNA (9007-49-2) ; DNA-Directed DNA Polymerase (EC 2.7.7.7) ; Caspase 3 (EC 3.4.22.-) ; mangostin (U6RIV93RU1)
    Language English
    Publishing date 2016-03
    Publishing country Greece
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1154403-x
    ISSN 1791-2423 ; 1019-6439
    ISSN (online) 1791-2423
    ISSN 1019-6439
    DOI 10.3892/ijo.2016.3321
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Inhibition of DNA polymerase λ and associated inflammatory activities of extracts from steamed germinated soybeans.

    Mizushina, Yoshiyuki / Kuriyama, Isoko / Yoshida, Hiromi

    Food & function

    2014  Volume 5, Issue 4, Page(s) 696–704

    Abstract: During the screening of selective DNA polymerase (pol) inhibitors from more than 50 plant food materials, we found that the extract from steamed germinated soybeans (Glycine max L.) inhibited human pol λ activity. Among the three processed soybean ... ...

    Abstract During the screening of selective DNA polymerase (pol) inhibitors from more than 50 plant food materials, we found that the extract from steamed germinated soybeans (Glycine max L.) inhibited human pol λ activity. Among the three processed soybean samples tested (boiled soybeans, steamed soybeans, and steamed germinated soybeans), both the hot water extract and organic solvent extract from the steamed germinated soybeans had the strongest pol λ inhibition. We previously isolated two glucosyl compounds, a cerebroside (glucosyl ceramide, AS-1-4, compound ) and a steroidal glycoside (eleutheroside A, compound ), from dried soybean, and these compounds were prevalent in the extracts of the steamed germinated soybeans as pol inhibitors. The hot water and organic solvent extracts of the steamed germinated soybeans and compounds and selectively inhibited the activity of eukaryotic pol λ in vitro but did not influence the activities of other eukaryotic pols, including those from the A-family (pol γ), B-family (pols α, δ, and ε), and Y-family (pols η, ι, and κ), and also showed no effect on the activity of pol β, which is of the same family (X) as pol λ. The tendency for in vitro pol λ inhibition by these extracts and compounds showed a positive correlation with the in vivo suppression of TPA (12-O-tetradecanoylphorbol-13-acetate)-induced inflammation in mouse ear. These results suggest that steamed germinated soybeans, especially the glucosyl compound components, may be useful for their anti-inflammatory properties.
    MeSH term(s) Animals ; DNA Polymerase beta/antagonists & inhibitors ; DNA Polymerase beta/immunology ; Enzyme Inhibitors/administration & dosage ; Female ; Germination ; Humans ; Inflammation/drug therapy ; Inflammation/enzymology ; Inflammation/genetics ; Inflammation/immunology ; Mice ; Mice, Inbred ICR ; Plant Extracts/administration & dosage ; Glycine max/chemistry ; Glycine max/growth & development
    Chemical Substances Enzyme Inhibitors ; Plant Extracts ; DNA polymerase beta2 (EC 2.7.7.-) ; DNA Polymerase beta (EC 2.7.7.7)
    Language English
    Publishing date 2014-02-11
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2612033-1
    ISSN 2042-650X ; 2042-6496
    ISSN (online) 2042-650X
    ISSN 2042-6496
    DOI 10.1039/c3fo60650c
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top