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  1. Article ; Online: Antiviral, immunomodulatory, and anticoagulant effects of quercetin and its derivatives: Potential role in prevention and management of COVID-19.

    Manjunath, Souparnika H / Thimmulappa, Rajesh K

    Journal of pharmaceutical analysis

    2021  Volume 12, Issue 1, Page(s) 29–34

    Abstract: The coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has caused a devastating health crisis worldwide. In this review, we have discussed that prophylactic phytochemical ... ...

    Abstract The coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has caused a devastating health crisis worldwide. In this review, we have discussed that prophylactic phytochemical quercetin supplementation in the form of foods or nutraceuticals may help manage the COVID-19 pandemic. The following evidence supports our argument. First, nuclear factor erythroid-derived 2-like 2 (NRF2) agonists abrogate replication of SARS-CoV-2 in lung cells, and quercetin is a potent NRF2 agonist. Second, quercetin exerts antiviral activity against several zoonotic coronaviruses, including SARS-CoV-2, mainly by inhibiting the entry of virions into host cells. Third, inflammatory pathways activated by nuclear factor kappa B, inflammasome, and interleukin-6 signals elicit cytokine release syndrome that promotes acute respiratory distress syndrome in patients with COVID-19, and quercetin inhibits these pro-inflammatory signals. Fourth, patients with COVID-19 develop thrombosis, and quercetin mitigates coagulation abnormalities by inhibiting plasma protein disulfide isomerase. This review provides a strong rationale for testing quercetin for the management of COVID-19.
    Language English
    Publishing date 2021-09-20
    Publishing country China
    Document type Journal Article ; Review
    ZDB-ID 2630174-X
    ISSN 2214-0883 ; 2095-1779
    ISSN (online) 2214-0883
    ISSN 2095-1779
    DOI 10.1016/j.jpha.2021.09.009
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Forced expression of microRNA-221-3p exerts protective effects against manganese-induced cytotoxicity in human lung epithelial cells.

    Gandhi, Deepa / Bhandari, Sneha / Mishra, Sehal / Rudrashetti, Ashwinkumar P / Vetrivel, Umashankar / Thimmulappa, Rajesh K / Rajasekaran, Subbiah

    Toxicology and applied pharmacology

    2024  Volume 485, Page(s) 116904

    Abstract: Manganese (Mn)-induced pulmonary toxicity and the underlying molecular mechanisms remain largely enigmatic. Further, in recent years, microRNAs (miRNAs) have emerged as regulators of several pollutants-mediated toxicity. In this context, our study aimed ... ...

    Abstract Manganese (Mn)-induced pulmonary toxicity and the underlying molecular mechanisms remain largely enigmatic. Further, in recent years, microRNAs (miRNAs) have emerged as regulators of several pollutants-mediated toxicity. In this context, our study aimed at elucidating whether miRNAs are involved in manganese (II) chloride (MnCl
    MeSH term(s) Humans ; MicroRNAs/genetics ; MicroRNAs/metabolism ; A549 Cells ; Epithelial Cells/drug effects ; Epithelial Cells/metabolism ; Apoptosis/drug effects ; Lung/drug effects ; Lung/pathology ; Lung/metabolism ; Reactive Oxygen Species/metabolism ; Membrane Potential, Mitochondrial/drug effects ; Cell Survival/drug effects ; Manganese Compounds ; Manganese/toxicity ; Cell Line ; Chlorides/toxicity ; Cell Cycle Checkpoints/drug effects ; Dose-Response Relationship, Drug
    Chemical Substances MicroRNAs ; MIRN221 microRNA, human ; Reactive Oxygen Species ; manganese chloride (QQE170PANO) ; Manganese Compounds ; Manganese (42Z2K6ZL8P) ; Chlorides
    Language English
    Publishing date 2024-03-19
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 204477-8
    ISSN 1096-0333 ; 0041-008X
    ISSN (online) 1096-0333
    ISSN 0041-008X
    DOI 10.1016/j.taap.2024.116904
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Human papillomavirus-driven repression of NRF2 signalling confers chemo-radio sensitivity and predicts prognosis in head and neck squamous cell carcinoma.

    Ramesh, Pushkal S / Bovilla, Venugopal R / Swamy, Vikas H / Manoli, Nandini N / Dasegowda, Krishnappa B / Siddegowda, Siddegowda M / Chandrashekarappa, Shilpa / Somasundara, Vishveshwara M / Kabekkodu, Shama P / Rajesh, R / Devegowda, Devanand / Thimmulappa, Rajesh K

    Free radical biology & medicine

    2023  Volume 205, Page(s) 234–243

    Abstract: Purpose: To investigate the role of NRF2 signalling in conferring superior prognosis in patients with HPV positive (HPV: Methods: NRF2 activity (NRF2, KEAP1, and NRF2-transcriptional targets), p16, and p53 levels between HPV: Results: Prospective ... ...

    Abstract Purpose: To investigate the role of NRF2 signalling in conferring superior prognosis in patients with HPV positive (HPV
    Methods: NRF2 activity (NRF2, KEAP1, and NRF2-transcriptional targets), p16, and p53 levels between HPV
    Results: Prospective analysis revealed a marked reduction in expression of NRF2, and its downstream genes in HPV
    Conclusion: Low constitutive NRF2 activity contributes to better prognosis of HPV
    MeSH term(s) Humans ; Squamous Cell Carcinoma of Head and Neck/genetics ; Human Papillomavirus Viruses ; NF-E2-Related Factor 2/genetics ; NF-E2-Related Factor 2/metabolism ; Kelch-Like ECH-Associated Protein 1/genetics ; Kelch-Like ECH-Associated Protein 1/metabolism ; Head and Neck Neoplasms/genetics ; Papillomavirus Infections/complications ; Papillomavirus Infections/genetics ; Papillomavirus Infections/metabolism ; Carcinoma, Squamous Cell/metabolism ; Retrospective Studies ; Tumor Suppressor Protein p53/genetics ; Tumor Suppressor Protein p53/metabolism ; Oncogene Proteins, Viral/genetics ; Oncogene Proteins, Viral/metabolism
    Chemical Substances NF-E2-Related Factor 2 ; Kelch-Like ECH-Associated Protein 1 ; Tumor Suppressor Protein p53 ; Oncogene Proteins, Viral
    Language English
    Publishing date 2023-06-14
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 807032-5
    ISSN 1873-4596 ; 0891-5849
    ISSN (online) 1873-4596
    ISSN 0891-5849
    DOI 10.1016/j.freeradbiomed.2023.06.011
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Reciprocal enhancement of SARS-CoV-2 and influenza virus replication in human pluripotent stem cell-derived lung organoids

    Kim, Min Jung / Kim, Sumi / Kim, Heeyeon / Gil, Dayeon / Han, Hyeong-Jun / Thimmulappa, Rajesh K / Choi, Jang-Hoon / Kim, Jung-Hyun

    Emerging microbes & infections

    2023  Volume 12, Issue 1, Page(s) 2211685

    Abstract: Patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and influenza A virus (FLUAV) coinfections were associated with severe respiratory failure and more deaths. Here, we developed a model for studying SARS-CoV-2 and FLUAV ... ...

    Abstract Patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and influenza A virus (FLUAV) coinfections were associated with severe respiratory failure and more deaths. Here, we developed a model for studying SARS-CoV-2 and FLUAV coinfection using human pluripotent stem cell-induced alveolar type II organoids (hiAT2). hiAT2 organoids were susceptible to infection by both viruses and had features of severe lung damage. A single virus markedly enhanced the susceptibility to other virus infections. SARS-CoV-2 delta variants upregulated α-2-3-linked sialic acid, while FLUAV upregulated angiotensin-converting enzyme 2 (ACE2) and transmembrane serine protease 2 (TMPRSS2). Moreover, coinfection by SARS-CoV-2 and FLUAV caused hyperactivation of proinflammatory and immune-related signaling pathways and cellular damage compared to a respective single virus in hiAT2 organoids. This study provides insight into molecular mechanisms underlying enhanced infectivity and severity in patients with co-infection of SARS-CoV-2 and FLUAV, which may aid in the development of therapeutics for such co-infection cases.
    MeSH term(s) Humans ; SARS-CoV-2 ; Coinfection ; COVID-19 ; Influenza, Human/metabolism ; Lung ; Virus Replication ; Pluripotent Stem Cells ; Organoids
    Language English
    Publishing date 2023-05-10
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2681359-2
    ISSN 2222-1751 ; 2222-1751
    ISSN (online) 2222-1751
    ISSN 2222-1751
    DOI 10.1080/22221751.2023.2211685
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Lipid peroxidation index of particulate matter: Novel metric for quantifying intrinsic oxidative potential and predicting toxic responses.

    Dey, Sumit K / Sugur, Kavya / Venkatareddy, Venkataramana G / Rajeev, Pradhi / Gupta, Tarun / Thimmulappa, Rajesh K

    Redox biology

    2021  Volume 48, Page(s) 102189

    Abstract: Using particulate matter (PM) mass as exposure metric does not reveal the intrinsic PM chemical characteristics or toxic potential, which is crucial for monitoring the sources of emission causing adverse health effects and developing risk mitigating ... ...

    Abstract Using particulate matter (PM) mass as exposure metric does not reveal the intrinsic PM chemical characteristics or toxic potential, which is crucial for monitoring the sources of emission causing adverse health effects and developing risk mitigating strategies. Oxidative stress and ensuing lipid peroxidation (LPO) in the lung are crucial underlying mechanisms of action by which PM drives cardiorespiratory disease. In the current study, we have postulated and demonstrated that the intrinsic potential of PM to elicit LPO, defined as "LPO index" as a novel approach for characterizing oxidative potential of PM (PM
    Language English
    Publishing date 2021-11-17
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2701011-9
    ISSN 2213-2317 ; 2213-2317
    ISSN (online) 2213-2317
    ISSN 2213-2317
    DOI 10.1016/j.redox.2021.102189
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: NRF2, p53, and p16: Predictive biomarkers to stratify human papillomavirus associated head and neck cancer patients for de-escalation of cancer therapy.

    Ramesh, Pushkal S / Devegowda, Devananda / Singh, Anju / Thimmulappa, Rajesh K

    Critical reviews in oncology/hematology

    2020  Volume 148, Page(s) 102885

    Abstract: Patients with HPV associated ( ... ...

    Abstract Patients with HPV associated (HPV
    MeSH term(s) Biomarkers, Tumor/analysis ; Biomarkers, Tumor/blood ; Carcinoma, Squamous Cell/genetics ; Carcinoma, Squamous Cell/metabolism ; Carcinoma, Squamous Cell/pathology ; Carcinoma, Squamous Cell/virology ; Cyclin-Dependent Kinase Inhibitor p16/analysis ; Head and Neck Neoplasms/genetics ; Head and Neck Neoplasms/metabolism ; Head and Neck Neoplasms/pathology ; Head and Neck Neoplasms/virology ; Human papillomavirus 16/genetics ; Humans ; NF-E2-Related Factor 2/genetics ; NF-E2-Related Factor 2/metabolism ; Neoplasm Recurrence, Local ; Papillomaviridae/genetics ; Papillomaviridae/isolation & purification ; Papillomavirus Infections/diagnosis ; Papillomavirus Infections/metabolism ; Papillomavirus Infections/virology ; Tumor Suppressor Protein p53/genetics ; Tumor Suppressor Protein p53/metabolism
    Chemical Substances Biomarkers, Tumor ; Cyclin-Dependent Kinase Inhibitor p16 ; NF-E2-Related Factor 2 ; TP53 protein, human ; Tumor Suppressor Protein p53
    Language English
    Publishing date 2020-02-01
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 605680-5
    ISSN 1879-0461 ; 0737-9587 ; 1040-8428
    ISSN (online) 1879-0461
    ISSN 0737-9587 ; 1040-8428
    DOI 10.1016/j.critrevonc.2020.102885
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: The effect of yoga on insomnia and quality of life among nursing professionals during COVID-19: A pre-post-test interventional study.

    Basavegowda, Madhu / Umeshchandra, Sujan M / Duraisamy, Patteswari / Thimmulappa, Rajesh K / Manivasagan, Mounika S / Mallaiah, Chaithra / Madhu, Jahnavi V / Yogeeshwaran, Vijaya V / Vishwanath, Nagashree / Rudramuniyappa, Vinitha K / Galag, Srinath C / Manasa Priya Dwadasi, Vsk

    Indian journal of psychiatry

    2023  Volume 65, Issue 11, Page(s) 1143–1150

    Abstract: Background: The coronavirus disease 2019 (COVID-19) pandemic has taken a toll on the well-being and quality of life (QoL) of healthcare professionals, especially nurses. Insomnia, a common consequence of the pandemic, adds to the physical and mental ... ...

    Abstract Background: The coronavirus disease 2019 (COVID-19) pandemic has taken a toll on the well-being and quality of life (QoL) of healthcare professionals, especially nurses. Insomnia, a common consequence of the pandemic, adds to the physical and mental strain on healthcare workers.
    Aim: This study aimed to assess the impact of workplace yoga intervention on insomnia severity and QoL among female nursing and healthcare professionals during the pandemic.
    Methods: A pre-post-interventional study was conducted among 173 nursing professionals working in a hospital setting. Baseline assessments collected age, body mass index (BMI), insomnia severity using the Insomnia Severity Index (ISI), and QoL using the World Health Organization Quality-of-Life Brief Version (WHOQOL-BREF). A 6-week workplace yoga intervention was conducted by trained professionals, followed by posttest assessments.
    Results: Among 173 participants, 57 had insomnia. Participants without significant insomnia had higher QoL scores (
    Conclusion: Workplace yoga intervention appears to be a promising approach to alleviate insomnia and enhance QoL among female nursing and healthcare professionals during the COVID-19 pandemic. Implementing tailored workplace yoga programs can play a crucial role in promoting the well-being and resilience of healthcare workers, contributing to a positive work environment and improved patient care outcomes.
    Language English
    Publishing date 2023-11-24
    Publishing country India
    Document type Journal Article
    ZDB-ID 221523-8
    ISSN 0019-5545
    ISSN 0019-5545
    DOI 10.4103/indianjpsychiatry.indianjpsychiatry_573_23
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Tannic acid alleviates experimental pulmonary fibrosis in mice by inhibiting inflammatory response and fibrotic process.

    Rajasekar, Nandhine / Sivanantham, Ayyanar / Kar, Amrita / Mahapatra, Santanu Kar / Ahirwar, Rajesh / Thimmulappa, Rajesh K / Paramasivam, Sudhakar Gandhi / Subbiah, Rajasekaran

    Inflammopharmacology

    2020  Volume 28, Issue 5, Page(s) 1301–1314

    Abstract: Pulmonary fibrosis (PF) is a chronic and irreversible scarring disease in the lung with limited treatment options. Therefore, it is critical to identify new therapeutic options. This study was undertaken to identify the effects of tannic acid (TA), a ... ...

    Abstract Pulmonary fibrosis (PF) is a chronic and irreversible scarring disease in the lung with limited treatment options. Therefore, it is critical to identify new therapeutic options. This study was undertaken to identify the effects of tannic acid (TA), a naturally occurring dietary polyphenol, in a mouse model of PF. Bleomycin (BLM) was intratracheally administered to induce PF. Administration of TA significantly reduced BLM-induced histological alterations, inflammatory cell infiltration and the levels of various inflammatory mediators (nitric oxide, leukotriene B
    MeSH term(s) Animals ; Anti-Inflammatory Agents/pharmacology ; Bleomycin ; Disease Models, Animal ; Inflammation/drug therapy ; Inflammation/pathology ; Inflammation Mediators/metabolism ; Mice ; Mice, Inbred C57BL ; Pulmonary Fibrosis/drug therapy ; Pulmonary Fibrosis/pathology ; Tannins/pharmacology
    Chemical Substances Anti-Inflammatory Agents ; Inflammation Mediators ; Tannins ; Bleomycin (11056-06-7)
    Language English
    Publishing date 2020-05-05
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1080058-x
    ISSN 1568-5608 ; 0925-4692
    ISSN (online) 1568-5608
    ISSN 0925-4692
    DOI 10.1007/s10787-020-00707-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Development of

    Manjunath, Souparnika H / Nataraj, Prabhakaran / Swamy, Vikas H / Sugur, Kavya / Dey, Sumit K / Ranganathan, Veena / Daniel, Shyni / Leihang, Zonunsiami / Sharon, Veronica / Chandrashekharappa, Sandeep / Sajeev, Nithin / Venkatareddy, Venkataramana G / Chuturgoon, Anil / Kuppusamy, Gowthamarajan / Madhunapantula, SubbaRao V / Thimmulappa, Rajesh K

    Food & function

    2023  Volume 14, Issue 10, Page(s) 4734–4751

    Abstract: Pharmacological activation of nuclear factor erythroid 2 related factor 2 (NRF2) provides protection against several environmental diseases by inhibiting oxidative and inflammatory injury. Besides high in protein and minerals, ...

    Abstract Pharmacological activation of nuclear factor erythroid 2 related factor 2 (NRF2) provides protection against several environmental diseases by inhibiting oxidative and inflammatory injury. Besides high in protein and minerals,
    MeSH term(s) Mice ; Animals ; Antioxidants/pharmacology ; Moringa oleifera/chemistry ; NF-E2-Related Factor 2/genetics ; NF-E2-Related Factor 2/metabolism ; Interleukin-6 ; Functional Food ; Tumor Necrosis Factor-alpha ; Anti-Inflammatory Agents/pharmacology ; Plant Extracts/pharmacology ; Plant Extracts/chemistry ; Reactive Oxygen Species
    Chemical Substances Antioxidants ; NF-E2-Related Factor 2 ; Interleukin-6 ; Tumor Necrosis Factor-alpha ; Anti-Inflammatory Agents ; Plant Extracts ; Reactive Oxygen Species
    Language English
    Publishing date 2023-05-22
    Publishing country England
    Document type Journal Article
    ZDB-ID 2612033-1
    ISSN 2042-650X ; 2042-6496
    ISSN (online) 2042-650X
    ISSN 2042-6496
    DOI 10.1039/d3fo00572k
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Antiviral and immunomodulatory activity of curcumin: A case for prophylactic therapy for COVID-19.

    Thimmulappa, Rajesh K / Mudnakudu-Nagaraju, Kiran Kumar / Shivamallu, Chandan / Subramaniam, K J Thirumalai / Radhakrishnan, Arun / Bhojraj, Suresh / Kuppusamy, Gowthamarajan

    Heliyon

    2021  Volume 7, Issue 2, Page(s) e06350

    Abstract: Coronavirus disease-19 (COVID-19), a devastating respiratory illness caused by SARS-associated coronavirus-2 (SARS-CoV-2), has already affected over 64 million people and caused 1.48 million deaths, just 12 months from the first diagnosis. COVID-19 ... ...

    Abstract Coronavirus disease-19 (COVID-19), a devastating respiratory illness caused by SARS-associated coronavirus-2 (SARS-CoV-2), has already affected over 64 million people and caused 1.48 million deaths, just 12 months from the first diagnosis. COVID-19 patients develop serious complications, including severe pneumonia, acute respiratory distress syndrome (ARDS), and or multiorgan failure due to exaggerated host immune response following infection. Currently, drugs that were effective against SARS-CoV are being repurposed for SARS-CoV-2. During this public health emergency, food nutraceuticals could be promising prophylactic therapeutics for COVID-19. Curcumin, a bioactive compound in turmeric, exerts diverse pharmacological activities and is widely used in foods and traditional medicines. This review presents several lines of evidence, which suggest curcumin as a promising prophylactic, therapeutic candidate for COVID-19. First, curcumin exerts antiviral activity against many types of enveloped viruses, including SARS-CoV-2, by multiple mechanisms: direct interaction with viral membrane proteins; disruption of the viral envelope; inhibition of viral proteases; induce host antiviral responses. Second, curcumin protects from lethal pneumonia and ARDS via targeting NF-κB, inflammasome, IL-6 trans signal, and HMGB1 pathways. Third, curcumin is safe and well-tolerated in both healthy and diseased human subjects. In conclusion, accumulated evidence indicates that curcumin may be a potential prophylactic therapeutic for COVID-19 in the clinic and public health settings.
    Language English
    Publishing date 2021-02-22
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2835763-2
    ISSN 2405-8440
    ISSN 2405-8440
    DOI 10.1016/j.heliyon.2021.e06350
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