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  1. Article ; Online: Adding a chapter to the literature: A rare encounter of unilateral Moyamoya disease with ipsilateral persistent trigeminal artery.

    Cornejo, Marilhia / Singla, Ramit / Singh, Savdeep / Elangovan, Cheran / Krishnaiah, Balaji

    eNeurologicalSci

    2023  Volume 33, Page(s) 100478

    Abstract: Background: The coexistence of persistent trigeminal artery (PTA) and Moyamoya disease (MMD) has been reported. If their pathogenesis is related and if PTA is protective or harmful in MMD remains unknown as these are rare cerebrovascular anomalies.: ... ...

    Abstract Background: The coexistence of persistent trigeminal artery (PTA) and Moyamoya disease (MMD) has been reported. If their pathogenesis is related and if PTA is protective or harmful in MMD remains unknown as these are rare cerebrovascular anomalies.
    Case presentation: A 35-year-old woman with sudden global aphasia whose CT head and CT angiography of head and neck showed a hypodensity in the left posterior middle cerebral artery (MCA), a possible left proximal internal carotid artery occlusion, and a left PTA with hypoplasia of vertebral and basilar arteries. Digital subtraction angiography showed chronic MMD in the left MCA with extensive pial collateralization from anterior cerebral artery (ACA). The patient was initiated on single antiplatelet therapy and later she underwent direct bypass surgical intervention and rehabilitation.
    Discussion: Our case report brings attention to the infrequent coexistence of ipsilateral MMD and PTA suggesting a potential congenital pathogenesis based on embryologic development and hemodynamics. Also, we propose a protective role of PTA in MMD in case of large anterior vessel occlusion. This case contributes to the scarce literature on the intriguing relationship between MMD and PTA.
    Language English
    Publishing date 2023-10-07
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2838045-9
    ISSN 2405-6502 ; 2405-6502
    ISSN (online) 2405-6502
    ISSN 2405-6502
    DOI 10.1016/j.ensci.2023.100478
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Case 1: An 11-year-old Girl Presenting with Fine Motor Difficulties.

    Singla, Ramit / Agarwal, Rajkumar

    Pediatrics in review

    2020  Volume 41, Issue 3, Page(s) 137–139

    MeSH term(s) Brain Stem/diagnostic imaging ; Brain Stem Neoplasms/diagnostic imaging ; Child ; Female ; Glioma/diagnostic imaging ; Humans ; Hydrocephalus/diagnostic imaging ; Hydrocephalus/surgery ; Magnetic Resonance Imaging ; Motor Skills ; Psychomotor Performance ; Treatment Outcome ; Ventriculoperitoneal Shunt
    Language English
    Publishing date 2020-05-11
    Publishing country United States
    Document type Case Reports ; Journal Article
    ZDB-ID 774515-1
    ISSN 1526-3347 ; 0191-9601
    ISSN (online) 1526-3347
    ISSN 0191-9601
    DOI 10.1542/pir.2016-0200
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: A Systematic Review Unraveling the Intricate Neurological Spectrum of COVID-19: Manifestations, Complications, and Transformative Insights for Patient Care.

    Pitliya, Aakanksha / Dhamecha, Jatin / Kumar, Deepak / Anusha, Kvn / Kancherla, Neeraj / Kumar, Lakshya / Singla, Ramit / Pitliya, Anmol

    Neurology India

    2024  Volume 72, Issue 1, Page(s) 11–19

    Abstract: The coronavirus disease 2019 (COVID-19) pandemic has strained global healthcare and financial infrastructures. Neurological manifestations of COVID-19 have gained recognition, emphasizing the need for comprehensive research in this area. This systematic ... ...

    Abstract The coronavirus disease 2019 (COVID-19) pandemic has strained global healthcare and financial infrastructures. Neurological manifestations of COVID-19 have gained recognition, emphasizing the need for comprehensive research in this area. This systematic review aims to comprehensively examine the neurological manifestations and complications associated with COVID-19 and assess their prevalence, impact on patient outcomes, and potential relationships with comorbidities, while emphasizing the significance of ongoing research in this field. We conducted a systematic review using the Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) 2020 guidelines. A comprehensive search of PubMed, Google Scholar, Science Direct, and ResearchGate databases was conducted to identify eligible studies focusing on COVID-19 patients, reporting neurological symptoms or complications, and published between 2020 and 2022 in English. The data extracted is performed in a Microsoft Excel spreadsheet. Two independent reviewers assessed study quality and bias using the AMSTAR 2 scale before inclusion. This systematic includes 12 systematic reviews and meta-analysis with 191,412 participants and average age of 60 years. Neurological symptoms included headaches, dizziness, anosmia, and ageusia. Complications ranged from cerebrovascular events to Guillain-Barré syndrome. Comorbidities, such as hypertension and diabetes, exacerbated severity. Mortality rates associated with neurological manifestations varied from 29.1% to 84.8%. The study underscores the complex neurological impact of COVID-19, affecting patients across age groups. Ongoing research is vital to understand mechanisms and develop targeted interventions, improving patient care and addressing pandemic consequences. This review provides a holistic view of COVID-19's neurological effects, emphasizing the need for sustained research efforts and collaborative endeavors to combat the neurological issues.
    MeSH term(s) Humans ; COVID-19/complications ; Nervous System Diseases/virology
    Language English
    Publishing date 2024-02-29
    Publishing country India
    Document type Journal Article ; Systematic Review
    ZDB-ID 415522-1
    ISSN 1998-4022 ; 0028-3886
    ISSN (online) 1998-4022
    ISSN 0028-3886
    DOI 10.4103/neurol-india.Neurol-India-D-24-00003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Incidence of Pediatric Stroke During the COVID-19 Pandemic in a Tertiary Care Center.

    Singla, Ramit / Sivaswamy, Lalitha / Mody, Swati / Thomas, Ronald / Kannikeswaran, Nirupama

    Clinical pediatrics

    2021  Volume 61, Issue 3, Page(s) 217–221

    MeSH term(s) Adolescent ; COVID-19/epidemiology ; Child ; Child, Preschool ; Female ; Hospitals, Pediatric ; Humans ; Incidence ; Infant ; Male ; Retrospective Studies ; SARS-CoV-2 ; Stroke/classification ; Stroke/diagnostic imaging ; Stroke/epidemiology ; Tertiary Care Centers
    Language English
    Publishing date 2021-12-29
    Publishing country United States
    Document type Comparative Study ; Journal Article
    ZDB-ID 207678-0
    ISSN 1938-2707 ; 0009-9228
    ISSN (online) 1938-2707
    ISSN 0009-9228
    DOI 10.1177/00099228211062735
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Multitargeted Molecular Docking Study of Natural-Derived Alkaloids on Breast Cancer Pathway Components.

    Singla, Ramit / Jaitak, Vikas

    Current computer-aided drug design

    2017  Volume 13, Issue 4, Page(s) 294–302

    Abstract: Background: Targeting of multiple sites is a pharmacologically, pharmacokinetic and dynamically more acceptable approach for complex diseases such as BC. It is recommended that the women who are at high risk of developing BC might be given foods ... ...

    Abstract Background: Targeting of multiple sites is a pharmacologically, pharmacokinetic and dynamically more acceptable approach for complex diseases such as BC. It is recommended that the women who are at high risk of developing BC might be given foods enhanced by indole alkaloids from vegetables like cabbage and broccoli. Administration of indole-3-carbinol is associated with decreased incidence of hormone-responsive BC (HRBC) which is implicated due to the induction of cytochrome P450 and glutathione-S-transferase which metabolizes chemical mutagens and by altering estrogen metabolism.
    Objective: To determine the molecular mechanism behind the anticancer activity of natural indole alkaloids present in various food and nutraceuticals products by utilizing Induced-fit docking (IFD) approach.
    Methods: Indole alkaloids were obtained from the database maintained by ChEBI (The database and ontology of Chemical Entities of Biological Interest) with ChEBI id 38958. The 3-dimentional and X-ray structure coordinates of Estrogen receptor- α (ER-α), Estrogen receptor- β (ER-β), and aromatase were obtained from protein data bank with PDB id codes 3ERT, 3OLS, and 3S7S (www.rcsb.org). The Induced fit molecular docking and ADME properties were calculated using Maestro 9.6.
    Results: IFD analysis showed that bromocriptine exhibits maximum binding affinity towards ER-α and fellutanine B towards ER-β and aromatase.
    Conclusion: Present research provided in-depth analysis of molecular mechanism and helped in the future design of new pharmacophores based on natural indole alkaloids targeting BC.
    MeSH term(s) Anticarcinogenic Agents/chemistry ; Anticarcinogenic Agents/pharmacology ; Antineoplastic Agents, Phytogenic/chemistry ; Antineoplastic Agents, Phytogenic/pharmacology ; Aromatase/chemistry ; Aromatase/metabolism ; Breast Neoplasms/drug therapy ; Breast Neoplasms/metabolism ; Breast Neoplasms/prevention & control ; Computer-Aided Design ; Crystallography, X-Ray ; Drug Discovery/methods ; Estrogen Receptor alpha/chemistry ; Estrogen Receptor alpha/metabolism ; Estrogen Receptor beta/chemistry ; Estrogen Receptor beta/metabolism ; Female ; Humans ; Indole Alkaloids/chemistry ; Indole Alkaloids/pharmacology ; Molecular Docking Simulation ; Protein Binding ; Signal Transduction/drug effects
    Chemical Substances Anticarcinogenic Agents ; Antineoplastic Agents, Phytogenic ; Estrogen Receptor alpha ; Estrogen Receptor beta ; Indole Alkaloids ; Aromatase (EC 1.14.14.1)
    Language English
    Publishing date 2017-04-05
    Publishing country United Arab Emirates
    Document type Journal Article
    ISSN 1875-6697
    ISSN (online) 1875-6697
    DOI 10.2174/1573409913666170406144642
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Stevia rebaudiana targeting α-amylase: An in-vitro and in-silico mechanistic study

    Singla, Ramit / Jaitak, Vikas / Singla, Navdeep

    Natural product research. 2019 Feb. 16, v. 33, no. 4

    2019  

    Abstract: Diabetes mellitus (DM) is the fastest growing metabolic disorder in the world. Recently, more attention is paid to the study of natural products due to side effects of synthetic drugs. Stevia rebaudiana (Bertoni) is considered an encouraging starting ... ...

    Abstract Diabetes mellitus (DM) is the fastest growing metabolic disorder in the world. Recently, more attention is paid to the study of natural products due to side effects of synthetic drugs. Stevia rebaudiana (Bertoni) is considered an encouraging starting point for the antidiabetic lead development. In the present study, the in vitro α-amylase inhibitory activity of the extracts of S. rebaudiana is investigated. In order to understand the molecular mechanism and future pharmacophore development, in silico study of secondary metabolites isolated from S. rebaudiana was carried out. Results indicated that water extract shows highest α-amylase inhibitory activity as compared to other extracts. Moreover, compound 20 (rebaudioside A) which has been previously reported and isolated from water extract showed the impressive binding profile with α-amylase. Therefore, our study suggests that S. rebaudiana could be used in the development of therapeutic drugs for the treatment of diabetes.
    Keywords adverse effects ; alpha-amylase ; diabetes mellitus ; drugs ; enzyme inhibition ; lead ; pharmacology ; secondary metabolites ; Stevia rebaudiana ; therapeutics
    Language English
    Dates of publication 2019-0216
    Size p. 548-552.
    Publishing place Taylor & Francis
    Document type Article
    ZDB-ID 2185747-7
    ISSN 1478-6427 ; 1478-6419
    ISSN (online) 1478-6427
    ISSN 1478-6419
    DOI 10.1080/14786419.2017.1395433
    Database NAL-Catalogue (AGRICOLA)

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  7. Article ; Online: Synthesis of rebaudioside A from stevioside and their interaction model with hTAS2R4 bitter taste receptor.

    Singla, Ramit / Jaitak, Vikas

    Phytochemistry

    2016  Volume 125, Page(s) 106–111

    Abstract: Steviol glycosides (SG's) from Stevia rebaudiana (Bertoni) have been used as a natural low-calorie sweeteners. Its aftertaste bitterness restricts its use for human consumption and limits its application in food and pharmaceutical products. In present ... ...

    Abstract Steviol glycosides (SG's) from Stevia rebaudiana (Bertoni) have been used as a natural low-calorie sweeteners. Its aftertaste bitterness restricts its use for human consumption and limits its application in food and pharmaceutical products. In present study, we have performed computational analysis in order to investigate the interaction of two major constituents of SG's against homology model of the hTAS2R4 receptor. Molecular simulation study was performed using stevioside and rebaudioside A revealed that, sugar moiety at the C-3'' position in rebaudioside A causes restriction of its entry into the receptor site thereby unable to trigger the bitter reception signaling cascade. Encouraged by the current finding, we have also developed a greener route using β-1,3-glucanase from Irpex lacteus for the synthesis of de-bittered rebaudioside A from stevioside. The rebaudioside A obtained was of high quality with percent conversion of 62.5%. The results here reported could be used for the synthesis of rebaudioside A which have large application in food and pharmaceutical industry.
    MeSH term(s) Chromatography, High Pressure Liquid ; Diterpenes, Kaurane/chemical synthesis ; Diterpenes, Kaurane/chemistry ; Diterpenes, Kaurane/metabolism ; Glucan 1,3-beta-Glucosidase/metabolism ; Glucosides/chemistry ; Humans ; Receptors, G-Protein-Coupled/physiology ; Stevia/chemistry ; Sweetening Agents/metabolism ; Taste/physiology
    Chemical Substances Diterpenes, Kaurane ; Glucosides ; Receptors, G-Protein-Coupled ; Sweetening Agents ; taste receptors, type 2 ; stevioside (0YON5MXJ9P) ; rebaudioside A (B3FUD0528F) ; Glucan 1,3-beta-Glucosidase (EC 3.2.1.58)
    Language English
    Publishing date 2016-05
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 208884-8
    ISSN 1873-3700 ; 0031-9422
    ISSN (online) 1873-3700
    ISSN 0031-9422
    DOI 10.1016/j.phytochem.2016.03.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Synthesis of rebaudioside A from stevioside and their interaction model with hTAS2R4 bitter taste receptor

    Singla, Ramit / Vikas Jaitak

    Phytochemistry. 2016 May, v. 125

    2016  

    Abstract: Steviol glycosides (SG’s) from Stevia rebaudiana (Bertoni) have been used as a natural low-calorie sweeteners. Its aftertaste bitterness restricts its use for human consumption and limits its application in food and pharmaceutical products. In present ... ...

    Abstract Steviol glycosides (SG’s) from Stevia rebaudiana (Bertoni) have been used as a natural low-calorie sweeteners. Its aftertaste bitterness restricts its use for human consumption and limits its application in food and pharmaceutical products. In present study, we have performed computational analysis in order to investigate the interaction of two major constituents of SG’s against homology model of the hTAS2R4 receptor. Molecular simulation study was performed using stevioside and rebaudioside A revealed that, sugar moiety at the C-3′′ position in rebaudioside A causes restriction of its entry into the receptor site thereby unable to trigger the bitter reception signaling cascade. Encouraged by the current finding, we have also developed a greener route using β-1,3-glucanase from Irpex lacteus for the synthesis of de-bittered rebaudioside A from stevioside. The rebaudioside A obtained was of high quality with percent conversion of 62.5%. The results here reported could be used for the synthesis of rebaudioside A which have large application in food and pharmaceutical industry.
    Keywords beta-glucanase ; bitterness ; drugs ; glycosides ; humans ; Irpex lacteus ; models ; pharmaceutical industry ; Stevia rebaudiana ; steviol ; stevioside ; sugars ; sweeteners ; taste receptors ; taste sensitivity
    Language English
    Dates of publication 2016-05
    Size p. 106-111.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 208884-8
    ISSN 1873-3700 ; 0031-9422
    ISSN (online) 1873-3700
    ISSN 0031-9422
    DOI 10.1016/j.phytochem.2016.03.004
    Database NAL-Catalogue (AGRICOLA)

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  9. Article ; Online: Coumarin Derivatives as Anticancer Agents for Lung Cancer Therapy: A Review.

    Kumar, Manvendra / Singla, Ramit / Dandriyal, Jyoti / Jaitak, Vikas

    Anti-cancer agents in medicinal chemistry

    2018  Volume 18, Issue 7, Page(s) 964–984

    Abstract: Background: The prevalence of lung cancer is 14% among the newly diagnosed cancer cases worldwide. Currently, the number of drugs that are in clinical practice is having a high prevalence of side effect and multidrug resistance. Researchers have made an ...

    Abstract Background: The prevalence of lung cancer is 14% among the newly diagnosed cancer cases worldwide. Currently, the number of drugs that are in clinical practice is having a high prevalence of side effect and multidrug resistance. Researchers have made an attempt to expand a suitable anticancer drug that has no MDR and side effect.
    Objective: Extensive exploration of Coumarin derivatives as a potent inhibitor of variety of proteins including EGFR, tyrosine kinase, ERK1/2, PI3K, HSP 90, Bax, STAT proteins, NF-κB and telomerase which have been associated with lung cancer.
    Method: The recent literature was surveyed utilizing the online resources and databases including scifinder, pubchem, EMBL, scopus and google scholar.
    Results: Upon analyzing the structure-activity relationship, it was found that N-aryl carboxamide, phenyl substitution at the C-3 position and 1,2,3- triazolyl, trihydroxystilbene, amino substitution at the C-4 position of the coumarin nucleus were the most effective in targeting lung cancer.
    Conclusion: This review is a collaborative and extensive compilation of synthetic strategies, mechanism of action, and the structure-activity relationship thereof for the management of lung carcinoma.
    MeSH term(s) Angiogenesis Inhibitors/chemical synthesis ; Angiogenesis Inhibitors/chemistry ; Angiogenesis Inhibitors/pharmacology ; Angiogenesis Inhibitors/therapeutic use ; Animals ; Antineoplastic Agents/chemical synthesis ; Antineoplastic Agents/chemistry ; Antineoplastic Agents/pharmacology ; Antineoplastic Agents/therapeutic use ; Apoptosis/drug effects ; Chemistry Techniques, Synthetic/methods ; Coumarins/chemical synthesis ; Coumarins/chemistry ; Coumarins/pharmacology ; Coumarins/therapeutic use ; HSP90 Heat-Shock Proteins/antagonists & inhibitors ; HSP90 Heat-Shock Proteins/metabolism ; Humans ; Lung/drug effects ; Lung/metabolism ; Lung/pathology ; Lung Neoplasms/drug therapy ; Lung Neoplasms/metabolism ; Lung Neoplasms/pathology ; Molecular Targeted Therapy/methods ; Protein Kinase Inhibitors/chemical synthesis ; Protein Kinase Inhibitors/chemistry ; Protein Kinase Inhibitors/pharmacology ; Protein Kinase Inhibitors/therapeutic use ; Structure-Activity Relationship
    Chemical Substances Angiogenesis Inhibitors ; Antineoplastic Agents ; Coumarins ; HSP90 Heat-Shock Proteins ; Protein Kinase Inhibitors
    Language English
    Publishing date 2018-01-02
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 2217610-X
    ISSN 1875-5992 ; 1871-5206
    ISSN (online) 1875-5992
    ISSN 1871-5206
    DOI 10.2174/1871520618666171229185926
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Stevia rebaudiana targeting α-amylase: An in-vitro and in-silico mechanistic study.

    Singla, Ramit / Singla, Navdeep / Jaitak, Vikas

    Natural product research

    2017  Volume 33, Issue 4, Page(s) 548–552

    Abstract: Diabetes mellitus (DM) is the fastest growing metabolic disorder in the world. Recently, more attention is paid to the study of natural products due to side effects of synthetic drugs. Stevia rebaudiana (Bertoni) is considered an encouraging starting ... ...

    Abstract Diabetes mellitus (DM) is the fastest growing metabolic disorder in the world. Recently, more attention is paid to the study of natural products due to side effects of synthetic drugs. Stevia rebaudiana (Bertoni) is considered an encouraging starting point for the antidiabetic lead development. In the present study, the in vitro α-amylase inhibitory activity of the extracts of S. rebaudiana is investigated. In order to understand the molecular mechanism and future pharmacophore development, in silico study of secondary metabolites isolated from S. rebaudiana was carried out. Results indicated that water extract shows highest α-amylase inhibitory activity as compared to other extracts. Moreover, compound 20 (rebaudioside A) which has been previously reported and isolated from water extract showed the impressive binding profile with α-amylase. Therefore, our study suggests that S. rebaudiana could be used in the development of therapeutic drugs for the treatment of diabetes.
    MeSH term(s) Computer Simulation ; Diabetes Mellitus/drug therapy ; Diterpenes, Kaurane/metabolism ; Molecular Docking Simulation ; Plant Extracts/chemistry ; Plant Extracts/pharmacology ; Protein Binding ; Stevia/chemistry ; Stevia/metabolism ; Sweetening Agents ; alpha-Amylases/antagonists & inhibitors ; alpha-Amylases/metabolism
    Chemical Substances Diterpenes, Kaurane ; Plant Extracts ; Sweetening Agents ; rebaudioside A (B3FUD0528F) ; alpha-Amylases (EC 3.2.1.1)
    Language English
    Publishing date 2017-10-26
    Publishing country England
    Document type Journal Article
    ZDB-ID 2185747-7
    ISSN 1478-6427 ; 1478-6419
    ISSN (online) 1478-6427
    ISSN 1478-6419
    DOI 10.1080/14786419.2017.1395433
    Database MEDical Literature Analysis and Retrieval System OnLINE

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