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  1. Article ; Online: Rapid Decrease in HDL-C in the Puberty Period of Boys Associated with an Elevation of Blood Pressure and Dyslipidemia in Korean Teenagers: An Explanation of Why and When Men Have Lower HDL-C Levels Than Women.

    Cho, Kyung-Hyun / Kim, Jae-Ryong

    Medical sciences (Basel, Switzerland)

    2021  Volume 9, Issue 2

    Abstract: Low serum high-density lipoproteins-cholesterol (HDL-C) levels and high blood pressure are linked to each other and are recognized as independent risk factors of cardiovascular disease and dementia. HDL can cross the blood-brain barrier to remove amyloid ...

    Abstract Low serum high-density lipoproteins-cholesterol (HDL-C) levels and high blood pressure are linked to each other and are recognized as independent risk factors of cardiovascular disease and dementia. HDL can cross the blood-brain barrier to remove amyloid plaque and the blood-testis barrier to supply cholesterol for spermatogenesis, but LDL cannot. During the teenage period, between 10 and 19 years of age, the systolic blood pressure (BP) increased gradually to 7.9% in boys (
    MeSH term(s) Adolescent ; Adult ; Blood Pressure ; Child ; Cholesterol ; Cholesterol, HDL ; Dyslipidemias/epidemiology ; Female ; Humans ; Hypolipoproteinemias ; Male ; Puberty ; Republic of Korea
    Chemical Substances Cholesterol, HDL ; Cholesterol (97C5T2UQ7J)
    Language English
    Publishing date 2021-05-24
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2754473-4
    ISSN 2076-3271 ; 2076-3271
    ISSN (online) 2076-3271
    ISSN 2076-3271
    DOI 10.3390/medsci9020035
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Ochratoxin A induces hepatic and renal toxicity in mice through increased oxidative stress, mitochondrial damage, and multiple cell death mechanisms.

    Son, Youlim / Lee, Hyun Jung / Ryu, Dojin / Kim, Jae-Ryong / Kim, Hwa-Young

    Archives of toxicology

    2024  

    Abstract: Ochratoxin A (OTA) is a widespread food toxin produced by Aspergillus ochraceus and other molds. In this study, we developed and established acute OTA toxicity conditions in mice, which received daily oral doses of OTA between 0.5 up to 8 mg/kg body ... ...

    Abstract Ochratoxin A (OTA) is a widespread food toxin produced by Aspergillus ochraceus and other molds. In this study, we developed and established acute OTA toxicity conditions in mice, which received daily oral doses of OTA between 0.5 up to 8 mg/kg body weight up to 7 days and were subjected to histological and biochemical analysis to characterize renal and hepatic damage. Oral administration of OTA for 7 days resulted in loss of body weight in a dose-dependent manner and increased the levels of serum biomarkers of hepatic and renal damage. The kidney was more sensitive to OTA-induced damage than the liver. In addition to necrosis, OTA induced hepatic and renal apoptosis in dose- and time-dependent manners. Especially, a high dose of OTA (8 mg/kg body weight) administered for 7 days led to necroptosis in both liver and kidney tissues. OTA dose-dependently increased the oxidative stress levels, including lipid peroxidation, in the liver and kidneys. OTA disrupted mitochondrial dynamics and structure in hepatic and renal cells, leading to the dysregulation of mitochondrial homeostasis. OTA increased transferrin receptor 1 and decreased glutathione peroxidase 4 levels in a dose- and time-dependent manner. These results suggest the induction of ferroptosis. Collectively, this study highlighted the characteristics of acute OTA-induced hepatic and renal toxicity in mice in terms of oxidative stress, mitochondrial damage, and multiple cell death mechanisms, including necroptosis and ferroptosis.
    Language English
    Publishing date 2024-03-28
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 124992-7
    ISSN 1432-0738 ; 0340-5761
    ISSN (online) 1432-0738
    ISSN 0340-5761
    DOI 10.1007/s00204-024-03732-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: CD9 expression in vascular aging and atherosclerosis.

    Kim, Jae-Ryong / Choi, Joon Hyuk

    Histology and histopathology

    2020  Volume 35, Issue 12, Page(s) 1449–1454

    Abstract: CD9 is a transmembrane glycoprotein belonging to the tetraspanin family. CD9 expression has been reported to be associated with cellular signaling, cell adhesion, cell migration, and tumor related processes. The aim of this study was to examine the ... ...

    Abstract CD9 is a transmembrane glycoprotein belonging to the tetraspanin family. CD9 expression has been reported to be associated with cellular signaling, cell adhesion, cell migration, and tumor related processes. The aim of this study was to examine the immunohistochemical expression of CD9 in vascular senescence and atherosclerosis. One hundred and twenty samples of normal young arteries (obtained from individuals aged 0-60 years), 40 samples of normal old arteries (obtained from individuals aged 61-80 years), and 67 samples of atherosclerotic arteries were obtained from surgically resected specimens. Tissue microarray blocks were prepared for immunohistochemical staining. Immunohistochemical staining detected CD9 expression in 10.8% (13 of 120 samples) of normal young arteries and 30.0% (12 of 40 samples) of normal old arteries. CD9 expression was absent or mildly present in the smooth muscle cells and endothelial cells of normal arteries. Normal old arteries showed significantly higher expression of CD9 than normal young arteries (P<0.01). Atherosclerotic arteries showed moderate or strong CD9 expression (65 of 67 samples, 97.0%), which was observed in the smooth muscle cells, endothelial cells, macrophages, and atheromatous plaques. CD9 was significantly expressed in the atherosclerotic arteries compared to normal young and old arteries (P<0.01). The results suggest that CD9 expression may play an important role in the vascular senescence and pathogenesis of atherosclerosis.
    MeSH term(s) Adolescent ; Adult ; Age Factors ; Aged ; Aged, 80 and over ; Arteries/immunology ; Arteries/pathology ; Atherosclerosis/immunology ; Atherosclerosis/pathology ; Biomarkers/analysis ; Case-Control Studies ; Child ; Child, Preschool ; Female ; Humans ; Immunohistochemistry ; Infant ; Infant, Newborn ; Male ; Middle Aged ; Plaque, Atherosclerotic ; Tetraspanin 29/analysis ; Young Adult
    Chemical Substances Biomarkers ; CD9 protein, human ; Tetraspanin 29
    Language English
    Publishing date 2020-10-07
    Publishing country Spain
    Document type Comparative Study ; Journal Article
    ZDB-ID 83911-5
    ISSN 1699-5848 ; 0213-3911
    ISSN (online) 1699-5848
    ISSN 0213-3911
    DOI 10.14670/HH-18-268
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Acoustic Change Complex: Clinical Implications.

    Kim, Jae-Ryong

    Journal of audiology & otology

    2015  Volume 19, Issue 3, Page(s) 120–124

    Abstract: The acoustic change complex (ACC) is a cortical auditory evoked potential elicited in response to a change in an ongoing sound. The characteristics and potential clinical implications of the ACC are reviewed in this article. The P1-N1-P2 recorded from ... ...

    Abstract The acoustic change complex (ACC) is a cortical auditory evoked potential elicited in response to a change in an ongoing sound. The characteristics and potential clinical implications of the ACC are reviewed in this article. The P1-N1-P2 recorded from the auditory cortex following presentation of an acoustic stimulus is believed to reflect the neural encoding of a sound signal, but this provides no information regarding sound discrimination. However, the neural processing underlying behavioral discrimination capacity can be measured by modifying the traditional methodology for recording the P1-N1-P2. When obtained in response to an acoustic change within an ongoing sound, the resulting waveform is referred to as the ACC. When elicited, the ACC indicates that the brain has detected changes within a sound and the patient has the neural capacity to discriminate the sounds. In fact, results of several studies have shown that the ACC amplitude increases with increasing magnitude of acoustic changes in intensity, spectrum, and gap duration. In addition, the ACC can be reliably recorded with good test-retest reliability not only from listeners with normal hearing but also from individuals with hearing loss, hearing aids, and cochlear implants. The ACC can be obtained even in the absence of attention, and requires relatively few stimulus presentations to record a response with a good signal-to-noise ratio. Most importantly, the ACC shows reasonable agreement with behavioral measures. Therefore, these findings suggest that the ACC might represent a promising tool for the objective clinical evaluation of auditory discrimination and/or speech perception capacity.
    Language English
    Publishing date 2015-12-18
    Publishing country Korea (South)
    Document type Journal Article ; Review
    ZDB-ID 3018961-5
    ISSN 2384-1710 ; 2384-1621
    ISSN (online) 2384-1710
    ISSN 2384-1621
    DOI 10.7874/jao.2015.19.3.120
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: HGF induces oncoprotein HCCR-1 expression through the Wnt/β-catenin pathway in gastric cancer.

    Koh, Sung Ae / Jung, Ji Yoon / Kim, Jae-Ryong / Lee, Kyung Hee

    American journal of translational research

    2022  Volume 14, Issue 3, Page(s) 1507–1517

    Abstract: Objective: Human cervical cancer oncogene (HCCR)-1, previously identified in cervical cancer and its cell lines, has been reported to play an important role in tumor progression in several cancers as a suppressor of apoptosis. However, the role of : ... ...

    Abstract Objective: Human cervical cancer oncogene (HCCR)-1, previously identified in cervical cancer and its cell lines, has been reported to play an important role in tumor progression in several cancers as a suppressor of apoptosis. However, the role of
    Methods: We employed several techniques including western blotting, semiquantitative reverse transcription polymerase chain reaction, diphenyltetrazolium bromide assay, chromatin immunoprecipitation assay, fluorescence-activated cell sorting, and
    Results: We observed that hepatocyte growth factor (HGF) upregulated
    Conclusion: Our study suggests the anti-apoptotic activity of HGF-induced
    Language English
    Publishing date 2022-03-15
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2471058-1
    ISSN 1943-8141
    ISSN 1943-8141
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Intermittent fasting promotes rejuvenation of immunosenescent phenotypes in aged adipose tissue.

    Ealey, Kafi N / Togo, Jacques / Lee, Ju Hee / Patel, Yash / Kim, Jae-Ryong / Park, So-Young / Sung, Hoon-Ki

    GeroScience

    2024  Volume 46, Issue 3, Page(s) 3457–3470

    Abstract: The aging of white adipose tissue (WAT) involves senescence of adipose stem and progenitor cells (ASPCs) and dysregulation of immune cell populations, serving as a major driver of age-associated adipose dysfunction and metabolic diseases. Conversely, the ...

    Abstract The aging of white adipose tissue (WAT) involves senescence of adipose stem and progenitor cells (ASPCs) and dysregulation of immune cell populations, serving as a major driver of age-associated adipose dysfunction and metabolic diseases. Conversely, the elimination of senescent ASPCs is associated with improvements in overall health. Intermittent fasting (IF), a dietary intervention that incorporates periodic cycles of fasting and refeeding, has been reported to promote weight loss and fat mass reduction and improve glucose and insulin homeostasis in both murine and human studies. While previous studies have assessed the effects of IF on obesity-associated metabolic dysfunction, few studies have examined the aging-specific changes to ASPCs and immune cell populations in WAT. Here, we show that IF in 18-20-month-old mice reduced senescent phenotypes of ASPCs and restored their adipogenic potential. Intriguingly, IF-treated mice exhibited an increase in adipose eosinophils, which has been reported to be associated with improved WAT homeostasis and immunological fitness in aged mice. The observed cellular and metabolic changes suggest that IF may be a feasible lifestyle regimen to reduce cellular senescence which could result in attenuation of downstream aging-induced WAT dysfunction and metabolic diseases.
    MeSH term(s) Mice ; Humans ; Animals ; Aged ; Intermittent Fasting ; Rejuvenation ; Adipose Tissue, White/metabolism ; Immunosenescence ; Obesity/metabolism ; Metabolic Diseases/metabolism
    Language English
    Publishing date 2024-02-21
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2886586-8
    ISSN 2509-2723 ; 2509-2715
    ISSN (online) 2509-2723
    ISSN 2509-2715
    DOI 10.1007/s11357-024-01093-4
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  7. Article ; Online: Senotherapeutics: emerging strategy for healthy aging and age-related disease.

    Kim, Eok-Cheon / Kim, Jae-Ryong

    BMB reports

    2018  Volume 52, Issue 1, Page(s) 47–55

    Abstract: Cellular senescence (CS) is one of hallmarks of aging and accumulation of senescent cells (SCs) with age contributes to tissue or organismal aging, as well as the pathophysiologies of diverse age-related diseases (ARDs). Genetic ablation of SCs in ... ...

    Abstract Cellular senescence (CS) is one of hallmarks of aging and accumulation of senescent cells (SCs) with age contributes to tissue or organismal aging, as well as the pathophysiologies of diverse age-related diseases (ARDs). Genetic ablation of SCs in tissues lengthened health span and reduced the risk of age-related pathologies in a mouse model, suggesting a direct link between SCs, longevity, and ARDs. Therefore, senotherapeutics, medicines targeting SCs, might be an emerging strategy for the extension of health span, and prevention or treatment of ARDs. Senotherapeutics are classified as senolytics which kills SCs selectively; senomorphics which modulate functions and morphology of SCs to those of young cells, or delays the progression of young cells to SCs in tissues; and immune-system mediators of the clearance of SCs. Some senolytics and senomorphics have been proven to markedly prevent or treat ARDs in animal models. This review will present the current status of the development of senotherapeutics, in relation to aging itself and ARDs. Finally, future directions and opportunities for senotherapeutics use will discussed. This knowledge will provide information that can be used to develop novel senotherapeutics for health span and ARDs. [BMB Reports 2019; 52(1): 47-55].
    MeSH term(s) Aging/drug effects ; Aging/physiology ; Animals ; Cellular Senescence/drug effects ; Cellular Senescence/physiology ; Healthy Aging/drug effects ; Healthy Aging/physiology ; Humans ; Longevity/physiology ; Mice ; Models, Animal
    Language English
    Publishing date 2018-12-10
    Publishing country Korea (South)
    Document type Journal Article ; Review
    ZDB-ID 2410389-5
    ISSN 1976-670X ; 1976-6696
    ISSN (online) 1976-670X
    ISSN 1976-6696
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  8. Article ; Online: Decrease in Serum HDL-C Level Is Associated with Elevation of Blood Pressure: Correlation Analysis from the Korean National Health and Nutrition Examination Survey 2017.

    Cho, Kyung-Hyun / Park, Hye-Jeong / Kim, Jae-Ryong

    International journal of environmental research and public health

    2020  Volume 17, Issue 3

    Abstract: A low-serum, high-density lipoproteins-cholesterol (HDL-C) level and high blood pressure (BP) are independent risk factors for cardiovascular disease and dementia. In the present study, in order to find putative correlation between low HDL-C and ... ...

    Abstract A low-serum, high-density lipoproteins-cholesterol (HDL-C) level and high blood pressure (BP) are independent risk factors for cardiovascular disease and dementia. In the present study, in order to find putative correlation between low HDL-C and hypertension, 4552 subjects (20-80 years old) were selected from the Korean National Health And Nutrition Examination Survey 2017 (KNHANES VII-2,
    MeSH term(s) Adult ; Aged ; Aged, 80 and over ; Blood Pressure/physiology ; Cholesterol, HDL/blood ; Female ; Humans ; Hypertension/blood ; Hypertension/epidemiology ; Male ; Middle Aged ; Nutrition Surveys ; Republic of Korea/epidemiology ; Risk Factors ; Young Adult
    Chemical Substances Cholesterol, HDL
    Language English
    Publishing date 2020-02-09
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1660-4601
    ISSN (online) 1660-4601
    DOI 10.3390/ijerph17031101
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Immunohistochemical Expressions of Senescence-Associated Secretory Phenotype and Its Association With Immune Microenvironments and Clinicopathological Factors in Invasive Breast Cancer.

    Park, Min Hui / Choi, Jung Eun / Kim, Jae-Ryong / Bae, Young Kyung

    Pathology oncology research : POR

    2021  Volume 27, Page(s) 1609795

    Abstract: This study was undertaken to investigate immunohistochemical expression of the senescence-associated secretory phenotype (SASP) in invasive breast cancer (IBC) tissues and to determine relationships between SASP positivity and tumor microenvironments and ...

    Abstract This study was undertaken to investigate immunohistochemical expression of the senescence-associated secretory phenotype (SASP) in invasive breast cancer (IBC) tissues and to determine relationships between SASP positivity and tumor microenvironments and the clinicopathological characteristics of IBC. Immunohistochemistry for senescence markers, that is, high mobility group box-1 (HMGB1), p16, p15, and decoy receptor 2 (DCR2), was performed in tissue microarrays of 1140 IBC samples. Cases positive for at least one of these four markers were considered SASP-positive. Relations between SASP and tumor characteristics, including immune microenvironments (stromal tumor-infiltrating lymphocytes [sTILs] density and numbers of intraepithelial CD103-positive [iCD103 + ] lymphocytes) and clinical outcomes were retrospectively evaluated. HMGB1, p16, p15, or DCR2 was positive in 6.7%, 26.6%, 21.1%, and 26.5%, respectively, of the 1,140 cases. Six hundred and five (53.1%) cases were SASP positive, and SASP positivity was significantly associated with histologic grade 3, high-sTIL and iCD103 + lymphocyte counts, absence of ER or PR, and a high Ki-67 index. Although SASP did not predict breast cancer-specific survival (BCSS) or disease-free survival (DFS) in the entire cohort, SASP positivity in luminal A IBC was associated with poor BCSS and DFS. However, patients with SASP-positive TNBC showed better survival than those with SASP-negative TNBC. In multivariate analysis, SASP positivity was an independent prognostic factor in both luminal A IBC and TNBC, although the effect on prognosis was the opposite. In conclusion, SASP would be involved in the modulation of immune microenvironments and tumor progression in IBC, and its prognostic significance depends on molecular subtype.
    MeSH term(s) Biomarkers, Tumor/metabolism ; Breast Neoplasms/immunology ; Breast Neoplasms/metabolism ; Breast Neoplasms/pathology ; Breast Neoplasms/surgery ; Carcinoma, Ductal, Breast/immunology ; Carcinoma, Ductal, Breast/metabolism ; Carcinoma, Ductal, Breast/pathology ; Carcinoma, Ductal, Breast/surgery ; Female ; Follow-Up Studies ; Gene Expression Regulation, Neoplastic ; Humans ; Immunohistochemistry ; Lymphocytes, Tumor-Infiltrating/immunology ; Middle Aged ; Prognosis ; Receptor, ErbB-2/metabolism ; Receptors, Estrogen/metabolism ; Receptors, Progesterone/metabolism ; Retrospective Studies ; Senescence-Associated Secretory Phenotype ; Survival Rate ; Tumor Microenvironment
    Chemical Substances Biomarkers, Tumor ; Receptors, Estrogen ; Receptors, Progesterone ; ERBB2 protein, human (EC 2.7.10.1) ; Receptor, ErbB-2 (EC 2.7.10.1)
    Language English
    Publishing date 2021-06-29
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1375979-6
    ISSN 1532-2807 ; 1219-4956
    ISSN (online) 1532-2807
    ISSN 1219-4956
    DOI 10.3389/pore.2021.1609795
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  10. Article: Native High-Density Lipoproteins (HDL) with Higher Paraoxonase Exerts a Potent Antiviral Effect against SARS-CoV-2 (COVID-19), While Glycated HDL Lost the Antiviral Activity.

    Cho, Kyung-Hyun / Kim, Jae-Ryong / Lee, In-Chul / Kwon, Hyung-Jun

    Antioxidants (Basel, Switzerland)

    2021  Volume 10, Issue 2

    Abstract: Human high-density lipoproteins (HDL) show a broad spectrum of antiviral activity in terms of anti-infection. Although many reports have pointed out a correlation between a lower serum HDL-C and a higher risk of COVID-19 infection and progression, the in ...

    Abstract Human high-density lipoproteins (HDL) show a broad spectrum of antiviral activity in terms of anti-infection. Although many reports have pointed out a correlation between a lower serum HDL-C and a higher risk of COVID-19 infection and progression, the in vitro antiviral activity of HDL against SARS-CoV-2 has not been reported. HDL functionality, such as antioxidant and anti-infection, can be impaired by oxidation and glycation and a change to pro-inflammatory properties. This study compared the antiviral activity of native HDL with glycated HDL via fructosylation and native low-density lipoproteins (LDL). After 72 h of fructosylation, glycated HDL showed a typical multimerized protein pattern with an elevation of yellowish fluorescence. Glycated HDL showed a smaller particle size with an ambiguous shape and a loss of paraoxonase activity up to 51% compared to native HDL. The phagocytosis of acetylated LDL was accelerated 1.3-fold by glycated HDL than native HDL. Native HDL showed 1.7 times higher cell viability and 3.6 times higher cytopathic effect (CPE) inhibition activity against SARS-CoV-2 than that of glycated HDL under 60 μg/mL (approximately final 2.2 μM) in a Vero E6 cell. Native HDL showed EC
    Language English
    Publishing date 2021-02-01
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2704216-9
    ISSN 2076-3921
    ISSN 2076-3921
    DOI 10.3390/antiox10020209
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