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  1. Article: Identification of Alkaloids from

    Ghosh, Rajesh / Badavath, Vishnu Nayak / Chowdhuri, Snehasis / Sen, Anik

    ChemistrySelect

    2022  Volume 7, Issue 14, Page(s) e202200055

    Abstract: Natural compounds in medicinal plants are best remedies for different diseases and are important to develop new drugs. This work was dedicated to understand the role of different natural compounds ... ...

    Abstract Natural compounds in medicinal plants are best remedies for different diseases and are important to develop new drugs. This work was dedicated to understand the role of different natural compounds of
    Language English
    Publishing date 2022-04-11
    Publishing country Germany
    Document type Journal Article
    ISSN 2365-6549
    ISSN 2365-6549
    DOI 10.1002/slct.202200055
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Anti-Amyloid-β Immunotherapy: A Leading Novel Avenue for Alzheimer's Disease.

    Sharma, Parth / Babbar, Ritchu / Sharma, Twinkle / Madaan, Piyush / Arora, Sandeep / Badavath, Vishnu Nayak

    Mini reviews in medicinal chemistry

    2022  Volume 23, Issue 1, Page(s) 53–66

    Abstract: Alzheimer's disease or senile dementia is principally acknowledged by the gradual accumulation of neurotoxic amyloid- β protein in the brain and is considered as the initial event of the phenomenon of this asymptomatic ailment. It prompts the decline in ... ...

    Abstract Alzheimer's disease or senile dementia is principally acknowledged by the gradual accumulation of neurotoxic amyloid- β protein in the brain and is considered as the initial event of the phenomenon of this asymptomatic ailment. It prompts the decline in cognitive performance, standard psychiatric functioning, and neuronal transmission across the brain. Significant inferences were withdrawn by utilizing the recently introduced disease-modifying anti- amyloid- β immunotherapy developed after performing the clinical and preclinical controlled trials to cure the neurodegenerative malady. This strategy is worthwhile because of the clinical relevance and specific targeted approach that exhibited the quenched immunotherapeutic effects and encouraged clinical findings. In vitro fabricated, anti- amyloid- β recombinant monoclonal antibodies are passively employed to promote clearance and antagonize the aggregation and synthesis of neurotoxic and degenerative aggregates of amyloid-β. Thus, passive immunotherapy has an adequate impact on treating this disorder, and currently, some other monoclonal pharmacological molecules are under clinical trials to defeat this severe exacerbation with more efficacy and clinical benefits. This review compendiously discusses the anti-amyloid-β immunotherapy, which will provide a more proficient framework to be employed as a potential therapeutic approach.
    MeSH term(s) Humans ; Alzheimer Disease/drug therapy ; Amyloid beta-Peptides/metabolism ; Immunotherapy ; Brain/metabolism
    Chemical Substances Amyloid beta-Peptides
    Language English
    Publishing date 2022-05-24
    Publishing country Netherlands
    Document type Review ; Journal Article
    ZDB-ID 2104081-3
    ISSN 1875-5607 ; 1389-5575
    ISSN (online) 1875-5607
    ISSN 1389-5575
    DOI 10.2174/1389557522666220524090354
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Primer for Designing Main Protease (M

    Thakur, Abhishek / Sharma, Gaurav / Badavath, Vishnu Nayak / Jayaprakash, Venkatesan / Merz, Kenneth M / Blum, Galia / Acevedo, Orlando

    The journal of physical chemistry letters

    2022  Volume 13, Issue 25, Page(s) 5776–5786

    Abstract: The COVID-19 outbreak has been devastating, with hundreds of millions of infections and millions of deaths reported worldwide. In response, the application of structure-activity relationships (SAR) upon experimentally validated inhibitors of SARS-CoV-2 ... ...

    Abstract The COVID-19 outbreak has been devastating, with hundreds of millions of infections and millions of deaths reported worldwide. In response, the application of structure-activity relationships (SAR) upon experimentally validated inhibitors of SARS-CoV-2 main protease (M
    MeSH term(s) Antiviral Agents/chemistry ; Antiviral Agents/pharmacology ; Cysteine Endopeptidases/metabolism ; Humans ; Molecular Docking Simulation ; Molecular Dynamics Simulation ; Peptide Hydrolases ; Protease Inhibitors/chemistry ; Protease Inhibitors/pharmacology ; SARS-CoV-2 ; Viral Nonstructural Proteins ; COVID-19 Drug Treatment
    Chemical Substances Antiviral Agents ; Protease Inhibitors ; Viral Nonstructural Proteins ; Peptide Hydrolases (EC 3.4.-) ; Cysteine Endopeptidases (EC 3.4.22.-)
    Language English
    Publishing date 2022-06-21
    Publishing country United States
    Document type Journal Article
    ISSN 1948-7185
    ISSN (online) 1948-7185
    DOI 10.1021/acs.jpclett.2c01193
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Novel imidazo[1,2-a]pyridine derivatives induce apoptosis and cell cycle arrest in non-small cell lung cancer by activating NADPH oxidase mediated oxidative stress.

    Bhavya, Kumari / Mantipally, Manohar / Roy, Soumyajit / Arora, Leena / Badavath, Vishnu Nayak / Gangireddy, Madhusudhanareddy / Dasgupta, Suman / Gundla, Rambabu / Pal, Durba

    Life sciences

    2022  Volume 294, Page(s) 120334

    Abstract: Aims: Imidazo[1,2-a]pyridine-based analogues have recently gained significant interest because of their wide spectrum of biological activities including anti-cancer potential, however the development of targeted therapeutic candidates against non-small ... ...

    Abstract Aims: Imidazo[1,2-a]pyridine-based analogues have recently gained significant interest because of their wide spectrum of biological activities including anti-cancer potential, however the development of targeted therapeutic candidates against non-small cell lung cancer (NSCLC) is of utmost need due to its high prevalence and poor prognosis. Herein, we have aimed to synthesized novel imidazo [1,2-a] pyridine derivatives (IMPA) by coupling with 2-amino-4H-pyran to enhance bioactivity against NSCLC.
    Main methods: We have designed and synthesized a series of fifteen novel imidazo [1,2-a] pyridine derivatives through molecular hybridization and studied their anti-cancer activity against in-vitro lung adenocarcinoma and 3D multicellular lung tumor spheroids.
    Key findings: IMPA-2, IMPA-5, IMPA-6, IMPA-8, and IMPA-12 markedly induced cytotoxicity by notably increased NADPH oxidase (NOX) activity, which results in the induction of ROS-mediated apoptosis in A549 lung cancer cells. It caused impairment of mitochondrial membrane potential by increasing pro-apoptotic BAX, and BAK1 expressions, and decreasing anti-apoptotic BCL2 expression, along with the induction of caspase-9/3 activation, however, these attributes were compromised in presence of N-acetyl-L-cysteine (NAC), a free radical scavenger. Increased ROS production by IMPAs also promotes p53 mediated cell cycle arrest through the inactivation of p38MAPK. Reduction of tumor size in IMPAs-treated 3D multicellular lung tumor spheroids gave further validation.
    Significance: Beside cytotoxicity, IMPAs also inhibit lung cancer cell invasion and migration, suggesting their applicability in metastatic lung cancer. Therefore, IMPA derivatives could be used as potential anti-cancer agents in treating non-small cell lung cancer.
    MeSH term(s) Adenocarcinoma of Lung/drug therapy ; Adenocarcinoma of Lung/metabolism ; Adenocarcinoma of Lung/pathology ; Antineoplastic Agents/chemistry ; Antineoplastic Agents/pharmacology ; Apoptosis ; Carcinoma, Non-Small-Cell Lung/drug therapy ; Carcinoma, Non-Small-Cell Lung/metabolism ; Carcinoma, Non-Small-Cell Lung/pathology ; Cell Cycle Checkpoints ; Cell Proliferation ; Humans ; Imidazoles/chemistry ; Lung Neoplasms/drug therapy ; Lung Neoplasms/metabolism ; Lung Neoplasms/pathology ; Membrane Potential, Mitochondrial ; Oxidative Stress ; Pyridines/chemistry ; Pyridines/pharmacology ; Reactive Oxygen Species/metabolism ; Tumor Cells, Cultured ; p38 Mitogen-Activated Protein Kinases/genetics ; p38 Mitogen-Activated Protein Kinases/metabolism
    Chemical Substances Antineoplastic Agents ; Imidazoles ; Pyridines ; Reactive Oxygen Species ; imidazole (7GBN705NH1) ; p38 Mitogen-Activated Protein Kinases (EC 2.7.11.24)
    Language English
    Publishing date 2022-01-20
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 3378-9
    ISSN 1879-0631 ; 0024-3205
    ISSN (online) 1879-0631
    ISSN 0024-3205
    DOI 10.1016/j.lfs.2022.120334
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Natural and Synthetic Agents Targeting Reactive Carbonyl Species against Metabolic Syndrome.

    Behl, Tapan / Gupta, Amit / Chigurupati, Sridevi / Singh, Sukhbir / Sehgal, Aayush / Badavath, Vishnu Nayak / Alhowail, Ahmad / Mani, Vasudevan / Bhatia, Saurabh / Al-Harrasi, Ahmed / Bungau, Simona

    Molecules (Basel, Switzerland)

    2022  Volume 27, Issue 5

    Abstract: Reactive carbonyl species (RCS) may originate from the oxidation of unsaturated fatty acids and sugar in conditions of pathology. They are known to have high reactivity towards DNA as well as nucleophilic sites of proteins, resulting in cellular ... ...

    Abstract Reactive carbonyl species (RCS) may originate from the oxidation of unsaturated fatty acids and sugar in conditions of pathology. They are known to have high reactivity towards DNA as well as nucleophilic sites of proteins, resulting in cellular dysfunction. It has been considered that various pathological conditions are associated with an increased level of RCS and their reaction products. Thus, regulating the levels of RCS may be associated with the mitigation of various metabolic and neurodegenerative disorders. In order to perform a comprehensive review, various literature databases, including MEDLINE, EMBASE, along with Google Scholar, were utilized to obtain relevant articles. The voluminous review concluded that various synthetic and natural agents are available or in pipeline research that hold tremendous potential to be used as a drug of choice in the therapeutic management of metabolic syndrome, including obesity, dyslipidemia, diabetes, and diabetes-associated complications of atherosclerosis, neuropathy, and nephropathy. From the available data, it may be emphasized that various synthetic agents, such as carnosine and simvastatin, and natural agents, such as polyphenols and terpenoids, can become a drug of choice in the therapeutic management for combating metabolic syndromes that involve RCS in their pathophysiology. Since the RCS are known to regulate the biological processes, future research warrants detailed investigations to decipher the precise mechanism.
    MeSH term(s) Metabolic Syndrome
    Language English
    Publishing date 2022-02-27
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules27051583
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Exploring the Role of Ubiquitin-Proteasome System in Parkinson's Disease.

    Behl, Tapan / Kumar, Sachin / Althafar, Ziyad M / Sehgal, Aayush / Singh, Sukhbir / Sharma, Neelam / Badavath, Vishnu Nayak / Yadav, Shivam / Bhatia, Saurabh / Al-Harrasi, Ahmed / Almoshari, Yosif / Almikhlafi, Mohannad A / Bungau, Simona

    Molecular neurobiology

    2022  Volume 59, Issue 7, Page(s) 4257–4273

    Abstract: Over the last decade, researchers have discovered that  a group of apparently unrelated neurodegenerative disorders, such as Parkinson's disease, have remarkable cellular and molecular biology similarities. Protein misfolding and aggregation are involved ...

    Abstract Over the last decade, researchers have discovered that  a group of apparently unrelated neurodegenerative disorders, such as Parkinson's disease, have remarkable cellular and molecular biology similarities. Protein misfolding and aggregation are involved in all of the neurodegenerative conditions; as a result, inclusion bodies aggregation starts in the cells. Chaperone proteins and ubiquitin (26S proteasome's proteolysis signal), which aid in refolding misfolded proteins, are frequently found in these aggregates. The discovery of disease-causing gene alterations that code for multiple ubiquitin-proteasome pathway proteins in Parkinson's disease has strengthened the relationship between the ubiquitin-proteasome system and neurodegeneration. The specific molecular linkages between these systems and pathogenesis, on the other hand, are unknown and controversial. We outline the current level of knowledge in this article, focusing on important unanswered problems.
    MeSH term(s) Humans ; Molecular Chaperones ; Neurodegenerative Diseases/metabolism ; Parkinson Disease/metabolism ; Proteasome Endopeptidase Complex/metabolism ; Ubiquitin/metabolism ; alpha-Synuclein/metabolism
    Chemical Substances Molecular Chaperones ; Ubiquitin ; alpha-Synuclein ; Proteasome Endopeptidase Complex (EC 3.4.25.1)
    Language English
    Publishing date 2022-05-03
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 645020-9
    ISSN 1559-1182 ; 0893-7648
    ISSN (online) 1559-1182
    ISSN 0893-7648
    DOI 10.1007/s12035-022-02851-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Rational design, molecular docking and synthesis of novel homopiperazine linked imidazo[1,2-a]pyrimidine derivatives as potent cytotoxic and antimicrobial agents.

    Mantipally, Manohar / Gangireddy, Madhusudhana Reddy / Gundla, Rambabu / Badavath, Vishnu Nayak / Mandha, Santhosh Reddy / Maddipati, Venkatanarayana Chowdary

    Bioorganic & medicinal chemistry letters

    2019  Volume 29, Issue 16, Page(s) 2248–2253

    Abstract: Designed and synthesized novel homopiperazine linked imidazo[1,2-a]pyrimidine derivatives (10a-i, 11a-g, 12), and evaluated them for their in vitro cytotoxicity against HeLa cells (cervical cancer), A549 cells (lung cancer) cells, by MTT assay. Compound ... ...

    Abstract Designed and synthesized novel homopiperazine linked imidazo[1,2-a]pyrimidine derivatives (10a-i, 11a-g, 12), and evaluated them for their in vitro cytotoxicity against HeLa cells (cervical cancer), A549 cells (lung cancer) cells, by MTT assay. Compound 12 (IC
    MeSH term(s) A549 Cells ; Anti-Bacterial Agents/chemical synthesis ; Anti-Bacterial Agents/chemistry ; Anti-Bacterial Agents/pharmacology ; Antifungal Agents/chemical synthesis ; Antifungal Agents/chemistry ; Antifungal Agents/pharmacology ; Antineoplastic Agents/chemical synthesis ; Antineoplastic Agents/chemistry ; Antineoplastic Agents/pharmacology ; Cell Proliferation/drug effects ; Dose-Response Relationship, Drug ; Drug Design ; Drug Screening Assays, Antitumor ; Fungi/drug effects ; Gram-Negative Bacteria/drug effects ; Gram-Positive Bacteria/drug effects ; HeLa Cells ; Humans ; Microbial Sensitivity Tests ; Molecular Docking Simulation ; Molecular Structure ; Piperazine/chemical synthesis ; Piperazine/chemistry ; Piperazine/pharmacology ; Pyrimidines/chemical synthesis ; Pyrimidines/chemistry ; Pyrimidines/pharmacology ; Structure-Activity Relationship
    Chemical Substances Anti-Bacterial Agents ; Antifungal Agents ; Antineoplastic Agents ; Pyrimidines ; imidazo(1,2-a)pyrimidine ; Piperazine (1RTM4PAL0V)
    Language English
    Publishing date 2019-06-20
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1063195-1
    ISSN 1464-3405 ; 0960-894X
    ISSN (online) 1464-3405
    ISSN 0960-894X
    DOI 10.1016/j.bmcl.2019.06.031
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Determination of potential inhibitors based on isatin derivatives against SARS-CoV-2 main protease (m

    Badavath, Vishnu Nayak / Kumar, Akhil / Samanta, Pralok K / Maji, Siddhartha / Das, Anik / Blum, Galia / Jha, Anjali / Sen, Anik

    Journal of biomolecular structure & dynamics

    2020  Volume 40, Issue 7, Page(s) 3110–3128

    Abstract: SARS-COV-2, the novel coronavirus and root of global pandemic COVID-19 caused a severe health threat throughout the world. Lack of specific treatments raised an effort to find potential inhibitors for the viral proteins. The recently invented crystal ... ...

    Abstract SARS-COV-2, the novel coronavirus and root of global pandemic COVID-19 caused a severe health threat throughout the world. Lack of specific treatments raised an effort to find potential inhibitors for the viral proteins. The recently invented crystal structure of SARS-CoV-2 main protease (M
    MeSH term(s) Antiviral Agents/chemistry ; Antiviral Agents/pharmacology ; Coronavirus 3C Proteases ; Humans ; Isatin/pharmacology ; Molecular Docking Simulation ; Molecular Dynamics Simulation ; Protease Inhibitors/chemistry ; Protease Inhibitors/pharmacology ; SARS-CoV-2 ; Structure-Activity Relationship ; COVID-19 Drug Treatment
    Chemical Substances Antiviral Agents ; Protease Inhibitors ; Isatin (82X95S7M06) ; 3C-like proteinase, SARS-CoV-2 (EC 3.4.22.-) ; Coronavirus 3C Proteases (EC 3.4.22.28)
    Keywords covid19
    Language English
    Publishing date 2020-11-17
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 49157-3
    ISSN 1538-0254 ; 0739-1102
    ISSN (online) 1538-0254
    ISSN 0739-1102
    DOI 10.1080/07391102.2020.1845800
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Novel imidazo[1,2-a]pyridine derivatives induce apoptosis and cell cycle arrest in non-small cell lung cancer by activating NADPH oxidase mediated oxidative stress

    Bhavya, Kumari / Mantipally, Manohar / Roy, Soumyajit / Arora, Leena / Badavath, Vishnu Nayak / Gangireddy, Madhusudhanareddy / Dasgupta, Suman / Gundla, Rambabu / Pal, Durba

    Life sciences. 2022 Apr. 01, v. 294

    2022  

    Abstract: Imidazo[1,2-a]pyridine-based analogues have recently gained significant interest because of their wide spectrum of biological activities including anti-cancer potential, however the development of targeted therapeutic candidates against non-small cell ... ...

    Abstract Imidazo[1,2-a]pyridine-based analogues have recently gained significant interest because of their wide spectrum of biological activities including anti-cancer potential, however the development of targeted therapeutic candidates against non-small cell lung cancer (NSCLC) is of utmost need due to its high prevalence and poor prognosis. Herein, we have aimed to synthesized novel imidazo [1,2-a] pyridine derivatives (IMPA) by coupling with 2-amino-4H-pyran to enhance bioactivity against NSCLC. We have designed and synthesized a series of fifteen novel imidazo [1,2-a] pyridine derivatives through molecular hybridization and studied their anti-cancer activity against in-vitro lung adenocarcinoma and 3D multicellular lung tumor spheroids. IMPA-2, IMPA-5, IMPA-6, IMPA-8, and IMPA-12 markedly induced cytotoxicity by notably increased NADPH oxidase (NOX) activity, which results in the induction of ROS-mediated apoptosis in A549 lung cancer cells. It caused impairment of mitochondrial membrane potential by increasing pro-apoptotic BAX, and BAK1 expressions, and decreasing anti-apoptotic BCL2 expression, along with the induction of caspase-9/3 activation, however, these attributes were compromised in presence of N-acetyl-L-cysteine (NAC), a free radical scavenger. Increased ROS production by IMPAs also promotes p53 mediated cell cycle arrest through the inactivation of p38MAPK. Reduction of tumor size in IMPAs-treated 3D multicellular lung tumor spheroids gave further validation. Beside cytotoxicity, IMPAs also inhibit lung cancer cell invasion and migration, suggesting their applicability in metastatic lung cancer. Therefore, IMPA derivatives could be used as potential anti-cancer agents in treating non-small cell lung cancer.
    Keywords NAD(P)H oxidase (H2O2-forming) ; acetylcysteine ; adenocarcinoma ; antineoplastic activity ; apoptosis ; cell cycle checkpoints ; cytotoxicity ; free radical scavengers ; lung neoplasms ; lungs ; membrane potential ; metastasis ; mitochondrial membrane ; neoplasm cells ; nucleic acid hybridization ; oxidative stress ; prognosis ; pyridines ; therapeutics
    Language English
    Dates of publication 2022-0401
    Publishing place Elsevier Inc.
    Document type Article
    ZDB-ID 3378-9
    ISSN 1879-0631 ; 0024-3205
    ISSN (online) 1879-0631
    ISSN 0024-3205
    DOI 10.1016/j.lfs.2022.120334
    Database NAL-Catalogue (AGRICOLA)

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  10. Article ; Online: Natural and Synthetic Agents Targeting Reactive Carbonyl Species against Metabolic Syndrome

    Tapan Behl / Amit Gupta / Sridevi Chigurupati / Sukhbir Singh / Aayush Sehgal / Vishnu Nayak Badavath / Ahmad Alhowail / Vasudevan Mani / Saurabh Bhatia / Ahmed Al-Harrasi / Simona Bungau

    Molecules, Vol 27, Iss 1583, p

    2022  Volume 1583

    Abstract: Reactive carbonyl species (RCS) may originate from the oxidation of unsaturated fatty acids and sugar in conditions of pathology. They are known to have high reactivity towards DNA as well as nucleophilic sites of proteins, resulting in cellular ... ...

    Abstract Reactive carbonyl species (RCS) may originate from the oxidation of unsaturated fatty acids and sugar in conditions of pathology. They are known to have high reactivity towards DNA as well as nucleophilic sites of proteins, resulting in cellular dysfunction. It has been considered that various pathological conditions are associated with an increased level of RCS and their reaction products. Thus, regulating the levels of RCS may be associated with the mitigation of various metabolic and neurodegenerative disorders. In order to perform a comprehensive review, various literature databases, including MEDLINE, EMBASE, along with Google Scholar, were utilized to obtain relevant articles. The voluminous review concluded that various synthetic and natural agents are available or in pipeline research that hold tremendous potential to be used as a drug of choice in the therapeutic management of metabolic syndrome, including obesity, dyslipidemia, diabetes, and diabetes-associated complications of atherosclerosis, neuropathy, and nephropathy. From the available data, it may be emphasized that various synthetic agents, such as carnosine and simvastatin, and natural agents, such as polyphenols and terpenoids, can become a drug of choice in the therapeutic management for combating metabolic syndromes that involve RCS in their pathophysiology. Since the RCS are known to regulate the biological processes, future research warrants detailed investigations to decipher the precise mechanism.
    Keywords reactive carbonyls species ; advanced glycation end products ; sequestering agents ; advanced lipo-oxidation end products ; metabolism ; metabolic syndrome ; Organic chemistry ; QD241-441
    Subject code 540
    Language English
    Publishing date 2022-02-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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