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Mucuna laticifera: unprecedented L-dopa content and its role in neurodegenerative and inflammatory conditions

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Abstract

Genus Mucuna encompasses several plant species renowned for their utilization in traditional Ayurvedic medicine for the treatment of Parkinson’s disease, chiefly due to their exceptionally high L-dopa content relative to other plants. However, limited information exists regarding Mucuna laticifera, a newly identified species within the Mucuna genus. This study unveils a remarkable L-dopa content of 174.3 mg/g in M. laticifera seeds, surpassing all previously documented Mucuna species. Moreover, this research marks the first documentation of L-dopa, flavonoids, and phenolics within M. laticifera seeds. Furthermore, the aqueous extract derived from these seeds exhibits robust antioxidant properties. Investigation into its anti-inflammatory potential reveals a significant reduction in paw swelling and neutrophil infiltration at inflammatory sites in a carrageenan-induced rat model. Gene expression analysis utilizing a rat paw model demonstrates that the seed extract significantly downregulates the expression of various inflammation-related genes compared to carrageenan-treated rats. Collectively, these findings clearly substantiate the anti-inflammatory activity of M. laticifera seed extract. The exceptional L-dopa content combined with its anti-inflammatory properties position M. laticifera seeds as a promising therapeutic option for neurodegenerative diseases like Parkinson’s, as well as various inflammatory conditions.

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Abbreviations

COX-2:

Cyclooxygenase-2

DPPH:

2,2-Diphenyl-1picrylhydrazyl

FRAP:

Free reducing antioxidant power

GAE:

Gallic acid equivalent

GAPDH:

Glyceraldehyde 3-phosphate dehydrogenase

IL-10:

Interleukin 10

IL-1β:

Interleukin-1 beta

IL-6:

Interleukin 6

iNOS:

Inducible nitric oxide synthase

MCP-1:

Monocyte chemoattractant protein-1

MLH:

High dose of M. laticifera seed extract

MLL:

Low dose of M. laticifera seed extract

NF-κB:

Nuclear factor kappa B

SOD:

Superoxide dismutase

TGF-β1:

Transforming growth factor beta 1

TNF-α:

Tumor necrosis factor alpha

TPTZ:

2,4,6-Tris(2-pyridyl)-s-triazine

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Acknowledgements

The author Viresh Thamke would like to thank University Grants Commission (UGC), New Delhi, India, for providing a postdoctoral fellowship under the scheme Dr. D. S. Kothari Postdoctoral Fellowship, India (No.F.4-2/2006(BSR)/BL/17-18/0569). The author would like to thank Dr. Kisan M. Kodam for providing microscope and imaging facility.

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Correspondence to Viresh Thamke or Jyoti Jadhav.

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13205_2024_3969_MOESM1_ESM.docx

Supplementary file1 Figure S1: The toxicological impact of M. laticifera seed extract was tested on rat from lower (100 mg/kg BW) to higher (1000 mg/kg BW) concetration and its effect was monitored on different organs of Wistar rat. (Aa-Ad) normal histologic architecture of the kidney with well-organized glomeruli (G); (Ba-Bd) normal hepatocytes near to the central vein; (Ca-Cd) shows normal glial and neural cells in cerebral tissue; (Da-Dd) shows normal heart cells; (Ea-Ed) histological section of large intestine; (Fa-Fd) histological section showing normal lung, arrow represents bronchiole (B); (Ga-Gd) spleen shows the white pulp (WP) and red pulp (RP) (DOCX 6180 KB).

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Thamke, V., Suryawanshi, S., Aware, C. et al. Mucuna laticifera: unprecedented L-dopa content and its role in neurodegenerative and inflammatory conditions. 3 Biotech 14, 126 (2024). https://doi.org/10.1007/s13205-024-03969-w

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  • DOI: https://doi.org/10.1007/s13205-024-03969-w

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