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  1. Article ; Online: Amyloid-β: A potential mediator of aging-related vascular pathologies.

    Khan, Fazlullah / Qiu, Hongyu

    Vascular pharmacology

    2023  Volume 152, Page(s) 107213

    Abstract: Aging is one of the most promising risk factors for vascular diseases, however, the precise mechanisms mediating aging-related pathologies are not fully understood. Amyloid beta (Aβ), a peptide produced by the proteolytic processing of amyloid precursor ... ...

    Abstract Aging is one of the most promising risk factors for vascular diseases, however, the precise mechanisms mediating aging-related pathologies are not fully understood. Amyloid beta (Aβ), a peptide produced by the proteolytic processing of amyloid precursor protein (APP), is known as a key mediator of brain damage involved in the pathogenesis of Alzheimer's disease (AD). Recently, it was found that the accumulation of Aβ in the vascular wall is linked to a range of aging-related vascular pathologies, indicating a potential role of Aβ in the pathogenesis of aging-associated vascular diseases. In the present review, we have updated the molecular regulation of Aβ in vascular cells and tissues, summarized the relevance of the Aβ deposition with vascular aging and diseases, and the role of Aβ dysregulation in aging-associated vascular pathologies, including the impaired vascular response, endothelial dysfunction, oxidative stress, and inflammation. This review will provide advanced information in understanding aging-related vascular pathologies and a new avenue to explore therapeutic targets.
    MeSH term(s) Humans ; Amyloid beta-Peptides ; Vascular Diseases ; Oxidative Stress ; Inflammation
    Chemical Substances Amyloid beta-Peptides
    Language English
    Publishing date 2023-08-23
    Publishing country United States
    Document type Journal Article ; Review ; Research Support, N.I.H., Extramural
    ZDB-ID 2082846-9
    ISSN 1879-3649 ; 1537-1891 ; 1879-3649
    ISSN (online) 1879-3649 ; 1537-1891
    ISSN 1879-3649
    DOI 10.1016/j.vph.2023.107213
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Nephrotic proteinuria and hematuria with newly diagnosed IgA nephropathy after liver transplant: A case report.

    Wang, Tingli / Ren, Honghong / Yin, Dan / Qiu, Hongyu

    Transplant immunology

    2024  Volume 83, Page(s) 102003

    Abstract: Background: IgA nephropathy is a renal lesion in patients with end-stage liver disease, called hepatic IgA nephropathy. The common manifestation of hepatic IgA nephropathy is microscopic hematuria. Sirolimus, often used to prevent organ rejection, has ... ...

    Abstract Background: IgA nephropathy is a renal lesion in patients with end-stage liver disease, called hepatic IgA nephropathy. The common manifestation of hepatic IgA nephropathy is microscopic hematuria. Sirolimus, often used to prevent organ rejection, has been reported to induce proteinuria after organ transplantation. But few cases of nephrotic proteinuria and hematuria are reported.
    Case presentation: In this case, a 45-year-old male with a long history of hepatic B virus infection and liver cirrhosis, received liver transplant and was taking sirolimus as one of his immunosuppression drugs. Overt proteinuria and hematuria occurred. With no proteinuria history before, renal biopsy was performed, which indicated IgA nephropathy.
    Conclusion: We reported a liver recipient, who was taking sirolimus, developing nephrotic proteinuria and hematuria with IgA nephropathy. Further studies need to be carried out to disclose mechanism behind this phenomenon.
    MeSH term(s) Male ; Humans ; Middle Aged ; Glomerulonephritis, IGA/diagnosis ; Hematuria/etiology ; Hematuria/pathology ; Liver Transplantation/adverse effects ; Proteinuria ; Sirolimus
    Chemical Substances Sirolimus (W36ZG6FT64)
    Language English
    Publishing date 2024-01-23
    Publishing country Netherlands
    Document type Case Reports
    ZDB-ID 1160846-8
    ISSN 1878-5492 ; 0966-3274
    ISSN (online) 1878-5492
    ISSN 0966-3274
    DOI 10.1016/j.trim.2024.102003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Valosin-containing protein acts as a target and mediator of S-nitrosylation in the heart through distinct mechanisms.

    Shi, Xiaomeng / O'Connor, Molly / Qiu, Hongyu

    Redox biology

    2024  Volume 72, Page(s) 103166

    Abstract: S-nitrosylation (SNO) is an emerging paradigm of redox signaling protecting cells against oxidative stress in the heart. Our previous studies demonstrated that valosin-containing protein (VCP), an ATPase-associated protein, is a vital mediator protecting ...

    Abstract S-nitrosylation (SNO) is an emerging paradigm of redox signaling protecting cells against oxidative stress in the heart. Our previous studies demonstrated that valosin-containing protein (VCP), an ATPase-associated protein, is a vital mediator protecting the heart against cardiac stress and ischemic injury. However, the molecular regulations conferred by VCP in the heart are not fully understood. In this study, we explored the potential role of VCP in cardiac protein SNO using multiple cardiac-specific genetically modified mouse models and various analytical techniques including biotin switch assay, liquid chromatography, mass spectrometry, and western blotting. Our results showed that cardiac-specific overexpression of VCP led to an overall increase in the levels of SNO-modified cardiac proteins in the transgenic (TG) vs. wild-type (WT) mice. Mass spectrometry analysis identified mitochondrial proteins involved in respiration, metabolism, and detoxification as primary targets of SNO modification in VCP-overexpressing mouse hearts. Particularly, we found that VCP itself underwent SNO modification at a specific cysteine residue in its N-domain. Additionally, our study demonstrated that glyceraldehyde 3-phosphate dehydrogenase (GAPDH), a key enzyme in glycolysis, also experienced increased SNO in response to VCP overexpression. While deletion of inducible nitric oxide synthase (iNOS) in VCP TG mice did not affect VCP SNO, it did abolish SNO modification in mitochondrial complex proteins, suggesting a dual mechanism of regulation involving both iNOS-dependent and independent pathways. Overall, our findings shed light on post-translational modification of VCP in the heart, unveiling a previously unrecognized role for VCP in regulating cardiac protein SNO and offering new insights into its function in cardiac protection.
    MeSH term(s) Animals ; Valosin Containing Protein/metabolism ; Valosin Containing Protein/genetics ; Mice ; Mice, Transgenic ; Myocardium/metabolism ; Protein Processing, Post-Translational ; Oxidative Stress ; Oxidation-Reduction ; Nitric Oxide Synthase Type II/metabolism ; Nitric Oxide Synthase Type II/genetics
    Chemical Substances Valosin Containing Protein (EC 3.6.4.6) ; Nitric Oxide Synthase Type II (EC 1.14.13.39)
    Language English
    Publishing date 2024-04-26
    Publishing country Netherlands
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2701011-9
    ISSN 2213-2317 ; 2213-2317
    ISSN (online) 2213-2317
    ISSN 2213-2317
    DOI 10.1016/j.redox.2024.103166
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: New Insights Into Energy Substrate Utilization and Metabolic Remodeling in Cardiac Physiological Adaption.

    Shi, Xiaomeng / Qiu, Hongyu

    Frontiers in physiology

    2022  Volume 13, Page(s) 831829

    Abstract: Cardiac function highly relies on sufficient energy supply. Perturbations in myocardial energy metabolism play a causative role in cardiac pathogenesis. Accumulating evidence has suggested that modifications of cardiac metabolism are also an essential ... ...

    Abstract Cardiac function highly relies on sufficient energy supply. Perturbations in myocardial energy metabolism play a causative role in cardiac pathogenesis. Accumulating evidence has suggested that modifications of cardiac metabolism are also an essential part of the adaptive responses to various physiological conditions in the heart to meet specific energy needs. The review highlighted some new studies on basic myocardial energy substrate metabolism and updated recent findings regarding cardiac metabolic remodeling and their associated mechanisms under physiological conditions, including exercise and cardiac development. Studying basic metabolic profiles in the heart in these conditions can contribute to understanding the significance of metabolic regulation in the heart during physiological adaption and gaining further insights into the maladaptive metabolic changes associated with cardiac pathogenesis, thus opening up new avenues to exploring novel therapeutic strategies in cardiac diseases.
    Language English
    Publishing date 2022-02-25
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2564217-0
    ISSN 1664-042X
    ISSN 1664-042X
    DOI 10.3389/fphys.2022.831829
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Thrombotic thrombocytopenic purpura in a patient on long-term alpha-interferon therapy for essential thrombocythemia: a case report.

    Qin, Chunmei / Yin, Dan / Liu, Fang / Qiu, Hongyu

    BMC nephrology

    2023  Volume 24, Issue 1, Page(s) 143

    Abstract: Background: Thrombotic thrombocytopenic purpura (TTP) is rare and severe thrombotic microangiopathy characterized by thrombocytopenia, hemolytic anemia, and renal dysfunction. In contrast, essential thrombocythemia (ET) is a myeloproliferative disease ... ...

    Abstract Background: Thrombotic thrombocytopenic purpura (TTP) is rare and severe thrombotic microangiopathy characterized by thrombocytopenia, hemolytic anemia, and renal dysfunction. In contrast, essential thrombocythemia (ET) is a myeloproliferative disease associated with an abnormal increase in platelet numbers. Previous studies reported several cases of the development of ET in patients with TTP. However, the case of an ET patient complicated with TTP has not been previously reported. In this case study, we present a patient with TTP who was previously diagnosed with ET. Therefore, to the best of our knowledge, this is the first report of TTP in ET.
    Case presentation: A 31-year-old Chinese female who was previously diagnosed with ET presented with anemia and renal dysfunction. The patient had been on long-term treatment with hydroxyurea, aspirin, and alpha interferon (INF-α) for ten years. The diagnosis of TTP was confirmed by clinical features, schistocytes noted on the peripheral blood smear, and lower ADAMTS13 activity (8.5%), together with the renal biopsy results. INF-α was discontinued, and the patient was then treated with plasma exchange and corticosteroids. After one year of follow-up, the patient had a normal hemoglobin level and platelet numbers, and her ADAMTS13 activity had improved. However, the patient's renal function remains impaired.
    Conclusions: We report a case of an ET patient complicated with TTP that was possibly due to INF-α, highlighting the potential complications associated with long-term ET therapy. The case also highlights the importance of considering TTP in patients with pre-existing ET who present with anemia and renal dysfunction, extending the spectrum of known studies.
    MeSH term(s) Humans ; Female ; Adult ; Thrombocythemia, Essential ; Interferon-alpha ; Purpura, Thrombotic Thrombocytopenic ; Immunotherapy ; Kidney Diseases
    Chemical Substances Interferon-alpha
    Language English
    Publishing date 2023-05-23
    Publishing country England
    Document type Case Reports ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2041348-8
    ISSN 1471-2369 ; 1471-2369
    ISSN (online) 1471-2369
    ISSN 1471-2369
    DOI 10.1186/s12882-023-03200-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Epigenetic Reader Bromodomain-Containing Protein 4 in Aging-Related Vascular Pathologies and Diseases: Molecular Basis, Functional Relevance, and Clinical Potential.

    Zheng, Xiaoxu / Diktonaite, Kotryna / Qiu, Hongyu

    Biomolecules

    2023  Volume 13, Issue 7

    Abstract: Aging is a key independent risk factor of various vascular diseases, for which the regulatory mechanisms remain largely unknown. Bromodomain-containing protein 4 (BRD4) is a member of the Bromodomain and Extra-Terminal domain (BET) family and is an ... ...

    Abstract Aging is a key independent risk factor of various vascular diseases, for which the regulatory mechanisms remain largely unknown. Bromodomain-containing protein 4 (BRD4) is a member of the Bromodomain and Extra-Terminal domain (BET) family and is an epigenetic reader playing diverse roles in regulating transcriptional elongation, chromatin remodeling, DNA damage response, and alternative splicing in various cells and tissues. While BRD4 was initially recognized for its involvement in cancer progression, recent studies have revealed that the aberrant expression and impaired function of BRD4 were highly associated with aging-related vascular pathology, affecting multiple key biological processes in the vascular cells and tissues, providing new insights into the understanding of vascular pathophysiology and pathogenesis of vascular diseases. This review summarizes the recent advances in BRD4 biological function, and the progression of the studies related to BRD4 in aging-associated vascular pathologies and diseases, including atherosclerosis, aortic aneurism vascular neointima formation, pulmonary hypertension, and essential hypertension, providing updated information to advance our understanding of the epigenetic mechanisms in vascular diseases during aging and paving the way for future research and therapeutic approaches.
    MeSH term(s) Humans ; Transcription Factors/genetics ; Transcription Factors/metabolism ; Nuclear Proteins/genetics ; Nuclear Proteins/metabolism ; Cell Cycle Proteins/metabolism ; Epigenesis, Genetic ; Hypertension, Pulmonary/genetics ; Aging/genetics
    Chemical Substances Transcription Factors ; Nuclear Proteins ; Cell Cycle Proteins ; BRD4 protein, human
    Language English
    Publishing date 2023-07-15
    Publishing country Switzerland
    Document type Journal Article ; Review ; Research Support, N.I.H., Extramural
    ZDB-ID 2701262-1
    ISSN 2218-273X ; 2218-273X
    ISSN (online) 2218-273X
    ISSN 2218-273X
    DOI 10.3390/biom13071135
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Interleukin-1β in Multifactorial Hypertension: Inflammation, Vascular Smooth Muscle Cell and Extracellular Matrix Remodeling, and Non-Coding RNA Regulation.

    Melton, Elaina / Qiu, Hongyu

    International journal of molecular sciences

    2021  Volume 22, Issue 16

    Abstract: The biological activities of interleukins, a group of circulating cytokines, are linked to the immuno-pathways involved in many diseases. Mounting evidence suggests that interleukin-1β (IL-1β) plays a significant role in the pathogenesis of various types ...

    Abstract The biological activities of interleukins, a group of circulating cytokines, are linked to the immuno-pathways involved in many diseases. Mounting evidence suggests that interleukin-1β (IL-1β) plays a significant role in the pathogenesis of various types of hypertension. In this review, we summarized recent findings linking IL-1β to systemic arterial hypertension, pulmonary hypertension, and gestational hypertension. We also outlined the new progress in elucidating the potential mechanisms of IL-1β in hypertension, focusing on it's regulation in inflammation, vascular smooth muscle cell function, and extracellular remodeling. In addition, we reviewed recent studies that highlight novel findings examining the function of non-coding RNAs in regulating the activity of IL-1β and its associated proteins in the setting of hypertension. The information collected in this review provides new insights into understanding the pathogenesis of hypertension and could lead to the discovery of new anti-hypertensive therapies to combat this highly prevalent disease.
    MeSH term(s) Animals ; Extracellular Matrix/pathology ; Extracellular Matrix/physiology ; Female ; Gene Expression Regulation ; Humans ; Hypertension/etiology ; Hypertension/pathology ; Hypertension/physiopathology ; Hypertension, Pregnancy-Induced/etiology ; Hypertension, Pregnancy-Induced/pathology ; Hypertension, Pregnancy-Induced/physiopathology ; Hypertension, Pulmonary/etiology ; Hypertension, Pulmonary/pathology ; Hypertension, Pulmonary/physiopathology ; Inflammation/complications ; Inflammation/physiopathology ; Interleukin-1beta/genetics ; Interleukin-1beta/physiology ; Muscle, Smooth, Vascular/physiopathology ; Pregnancy ; RNA, Untranslated/physiology ; Vascular Remodeling/physiology
    Chemical Substances IL1B protein, human ; Interleukin-1beta ; RNA, Untranslated
    Language English
    Publishing date 2021-08-11
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms22168639
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Metabolic Profiling and Metabolites Fingerprints in Human Hypertension: Discovery and Potential.

    Onuh, John Oloche / Qiu, Hongyu

    Metabolites

    2021  Volume 11, Issue 10

    Abstract: Early detection of pathogenesis through biomarkers holds the key to controlling hypertension and preventing cardiovascular complications. Metabolomics profiling acts as a potent and high throughput tool offering new insights on disease pathogenesis and ... ...

    Abstract Early detection of pathogenesis through biomarkers holds the key to controlling hypertension and preventing cardiovascular complications. Metabolomics profiling acts as a potent and high throughput tool offering new insights on disease pathogenesis and potential in the early diagnosis of clinical hypertension with a tremendous translational promise. This review summarizes the latest progress of metabolomics and metabolites fingerprints and mainly discusses the current trends in the application in clinical hypertension. We also discussed the associated mechanisms and pathways involved in hypertension's pathogenesis and explored related research challenges and future perspectives. The information will improve our understanding of the development of hypertension and inspire the clinical application of metabolomics in hypertension and its associated cardiovascular complications.
    Language English
    Publishing date 2021-10-07
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2662251-8
    ISSN 2218-1989
    ISSN 2218-1989
    DOI 10.3390/metabo11100687
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Serum response factor‐cofactor interactions and their implications in disease

    Onuh, John Oloche / Qiu, Hongyu

    FEBS journal. 2021 May, v. 288, no. 10

    2021  

    Abstract: Serum response factor (SRF), a member of the Mcm1, Agamous, Deficiens, and SRF (MADS) box transcription factor, is widely expressed in all cell types and plays a crucial role in the physiological function and development of diseases. SRF regulates its ... ...

    Abstract Serum response factor (SRF), a member of the Mcm1, Agamous, Deficiens, and SRF (MADS) box transcription factor, is widely expressed in all cell types and plays a crucial role in the physiological function and development of diseases. SRF regulates its downstream genes by binding to their CArG DNA box by interacting with various cofactors. However, the underlying mechanisms are not fully understood, therefore attracting increasing research attention due to the importance of this topic. This review's objective is to discuss the new progress in the studies of the molecular mechanisms involved in the activation of SRF and its impacts in physiological and pathological conditions. Notably, we summarized the recent studies on the interaction of SRF with its two main types of cofactors belonging to the myocardin families of transcription factors and the members of the ternary complex factors. The knowledge of these mechanisms will create new opportunities for understanding the dynamics of many traits and disease pathogenesis especially, cardiovascular diseases and cancer that could serve as targets for pharmacological control and treatment of these diseases.
    Keywords DNA ; blood serum ; pathogenesis ; transcription factors
    Language English
    Dates of publication 2021-05
    Size p. 3120-3134.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note NAL-AP-2-clean ; REVIEW
    ZDB-ID 2173655-8
    ISSN 1742-4658 ; 1742-464X
    ISSN (online) 1742-4658
    ISSN 1742-464X
    DOI 10.1111/febs.15544
    Database NAL-Catalogue (AGRICOLA)

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  10. Article ; Online: Optimization of Voriconazole Dosing Regimens Against Aspergillus Species and Candida Species in Pediatric Patients After Hematopoietic Cell Transplantation: A Theoretical Study Based on Pharmacokinetic/Pharmacodynamic Analysis.

    Xie, Mengyuan / Jiang, Manxue / Qiu, Hongyu / Rong, Li / Kong, Lingti

    Journal of clinical pharmacology

    2023  Volume 63, Issue 9, Page(s) 993–1001

    Abstract: This study aimed to optimize the dosing regimens of voriconazole (VRC) for pediatric patients after hematopoietic cell transplantation with different cytochrome P450 (CYP) 2C19 phenotypes and body weights, based on pharmacokinetic (PK)/pharmacodynamic ( ... ...

    Abstract This study aimed to optimize the dosing regimens of voriconazole (VRC) for pediatric patients after hematopoietic cell transplantation with different cytochrome P450 (CYP) 2C19 phenotypes and body weights, based on pharmacokinetic (PK)/pharmacodynamic (PD) analysis. The PK parameters of VRC were derived from previous literature. Combined with key factors affecting VRC, patients were categorized into 9 subgroups based on different CYP2C19 phenotypes (poor metabolizer/intermediate metabolizer, normal metabolizer, and rapid metabolizer/ultrarapid metabolizer) and typical body weights (15, 40, and 65 kg). Monte Carlo simulation was used to investigate dosing regimens for different groups. The area under the 24-hour free drug concentration-time curve to the minimum inhibitory concentration (MIC) > 25 was used as the target value for effective treatment. The probability of target achievement and the cumulative fraction of response were determined on the basis of the assumed MICs and MICs distribution frequency of Aspergillus species and Candida species. When the MIC was ≤1 mg/L, 4 mg/kg every 12 hours was sufficient for optimal effects in groups 1-3 and groups 5 and 6; however, 6 mg/kg every 12 hours was required for group 4, and 8 mg/kg every 12 hours was required for groups 7-9. In empirical treatment, lower (2-6 mg/kg every 12 hours) and higher (6-12 mg/kg every 12 hours) dosing regimens were recommended for Candida spp. and Aspergillus spp., respectively. Our findings will assist in selecting appropriate dosing regimens of VRC for pediatric patients after hematopoietic cell transplantation with different CYP2C19 phenotypes and body weights. Clinically, it is better to continuously adjust the dosing on the basis of the therapeutic drug monitoring.
    MeSH term(s) Humans ; Child ; Voriconazole ; Antifungal Agents ; Candida ; Cytochrome P-450 CYP2C19/genetics ; Aspergillus ; Hematopoietic Stem Cell Transplantation ; Monte Carlo Method ; Microbial Sensitivity Tests ; Models, Theoretical ; Body Weight
    Chemical Substances Voriconazole (JFU09I87TR) ; Antifungal Agents ; Cytochrome P-450 CYP2C19 (EC 1.14.14.1)
    Language English
    Publishing date 2023-05-11
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 188980-1
    ISSN 1552-4604 ; 0091-2700 ; 0021-9754
    ISSN (online) 1552-4604
    ISSN 0091-2700 ; 0021-9754
    DOI 10.1002/jcph.2254
    Database MEDical Literature Analysis and Retrieval System OnLINE

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