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An International Peer Reviewed Journal for Pharmaceutical, Medical & Biological Sciences

An Official Publication of Society for Advance Healthcare Research (Reg. No. : 01/01/01/31674/16)

European Journal of Pharmaceutical and Medical Research (EJPMR) has indexed with various reputed international bodies like : Google Scholar , Indian Science Publications , InfoBase Index (In Process) , SOCOLAR, China , Research Bible, Fuchu, Tokyo. JAPAN , International Society for Research activity (ISRA) , Scientific Indexing Services (SIS) , Polish Scholarly Bibliography , Global Impact Factor (GIF) (Under Process) , Universal Impact Factor , International Scientific Indexing (ISI), UAE  , Index Copernicus , CAS (A Division of American Chemical Society) USA (Under Process) , Directory of Open Access Journal (DOAJ, Sweden, in process) , UDLedge Science Citation Index , CiteFactor , Directory Of Research Journal Indexing (DRJI) , Indian citation Index (ICI) , Journal Index (JI, Under Process) , Directory of abstract indexing for Journals (DAIJ) , Open Access Journals (Under Process) , Impact Factor Services For International Journals (IFSIJ) , Cosmos Impact Factor , Jour Informatics (Under Process) , Eurasian Scientific Journal Index (ESJI) , International Innovative Journal Impact Factor (IIJIF) , Science Library Index, Dubai, United Arab Emirates , Pubmed Database [NLM ID: 101669306] (Under Process) , IP Indexing (IP Value 2.40) , Web of Science Group (Under Process) , Directory of Research Journals Indexing , Scholar Article Journal Index (SAJI) , International Scientific Indexing ( ISI ) , Scope Database , 

 ISSN 2394-3211

Impact Factor: 6.222

 ICV - 79.57



*B. Sugithra, Dr. K. Raadhika M.D., Dr. K. Periyanayagam, N. Subbulekshmi, S. Indumathi, T. Uma Poorani and R. Balasubramaniyan


Objective: To prescreen the in vivo neuro protective activity of the VO of the leaves of P.nigrum family Piperaceae commonly called as pepper, using the model organism Aβ42-amyloid neuro toxicity induced Drosophila melanogaster. Method: Isolation of leaf VO and its analysis by GC-MS were carried out. Acute toxicity assessment were also performed. The neuro protective effect of the VO of the leaves of P.nigrum (VOPNL) in vivo was evaluated on the transgenic Aβ42 model of Drosophila melanogaster, a novel model system for screening drugs for Alzheimer disease by Longivity Assay, Climbing Assay, Pseudopupil assay and nail polish imprint technique and SEM. Results: GC-MS Profile of the VO showed the presence of nerolidol, β- caryophyllene, cubein, globulol, α -pinene, α -terpinene, elemol, α–bisbolol, β- bisabolene, β-elemene. Toxicity assessment using brine shrimp lethality bioassay (BSLA) of the VOPNL showed nontoxic upto LC50 500ppm. The VOPNL possesses potential in vivo neuro protective activity on Drosophila melanogaster against beta amyloid induced neuronal toxicity. Conclusion: We investigated the in vivo neuroprotection of the VOPNL on the representative of Alzheimer disease model of transgenic Drosophila by overexpression of beta amyloid protein, Aβ42. In the present study we have presented the first evidence that the VO of the leaves could significantly ameliorate the adverse morphological changes from Aβ42 protein in Drosophila, as indicated by prolonging the lifespan, by improving locomotor abilities and rescuing neurodegeneration in ommatidia of Aβ expressing Drosophila which is comparable with donepezil. So it demonstrated the novel use of VOPNL against Aβ induced neurodegeneration which may be mediated through the multiple components of the VO. Based on this findings we suggest developing VO of the leaves of P.nigrum as a potential therapeutic intervention for neurodegenerative diseases like Alzheimer‟s disease. VOPNL effectively protect, rescue and most importantly restore the impaired movement activity (i.e climbing capability) in Drosophila melanogaster, a valid model of AD. It provides a framework for future studies to assess the suppression of oxidative stress and to restore and or maintain locomotor activity in AD patients. Elucidation of their mechanism of action will provide new insight for new targets.

Keywords: Piper nigrum, Piperacae, Neurooprotective, Drosophila melanogaster, Voaltile oil, Alzheimer disease.

[Full Text Article]




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Google Scholar Indian Science Publications InfoBase Index (In Process) SOCOLAR, China Research Bible, Fuchu, Tokyo. JAPAN International Society for Research activity (ISRA) Scientific Indexing Services (SIS) Polish Scholarly Bibliography Global Impact Factor (GIF) (Under Process) Universal Impact Factor International Scientific Indexing (ISI), UAE Index Copernicus CAS (A Division of American Chemical Society) USA (Under Process) Directory of Open Access Journal (DOAJ, Sweden, in process) UDLedge Science Citation Index CiteFactor Directory Of Research Journal Indexing (DRJI) Indian citation Index (ICI) Journal Index (JI, Under Process) Directory of abstract indexing for Journals (DAIJ) Open Access Journals (Under Process) Impact Factor Services For International Journals (IFSIJ) Cosmos Impact Factor Jour Informatics (Under Process) Eurasian Scientific Journal Index (ESJI) International Innovative Journal Impact Factor (IIJIF) Science Library Index, Dubai, United Arab Emirates Pubmed Database [NLM ID: 101669306] (Under Process) IP Indexing (IP Value 2.40) Web of Science Group (Under Process) Directory of Research Journals Indexing Scholar Article Journal Index (SAJI) International Scientific Indexing ( ISI ) Scope Database