Nonivamide

Protective effect and relation structure-activity of nonivamide and iododerivatives in several models of lipid oxidation.[Pubmed: 19497416]

Chem Biol Interact. 2009 Jul 15;180(2):183-92.

The introduction of an iodine atom on the vanillyl moiety of Nonivamide causes a switch in the vanilloid activity (TRPV1 antagonism versus TRPV1 desensitization) and nullifies the aversive properties of capsaicinoids. In the present study we investigated the effect of iodination in the vanillyl moiety on the antioxidant activity of capsaicinoids.
METHODS AND RESULTS:
To this aim, we have compared the protective effects of Nonivamide and three iododerivatives, 2-iodoNonivamide (2IN), 5-iodoNonivamide (5IN), and 6-iodoNonivamide (6IN) in a series of in vitro models of lipid oxidation, namely the autoxidation and the FeCl(3)-mediated oxidation of linoleic acid at 37 degrees C and the thermal (140 degrees C), solvent-free oxidation of cholesterol. All tested compounds could protect linoleic acid and cholesterol against oxidative degradation, the order of potency being: Nonivamide>5IN>6IN approximately 2IN. Our results show that, in general, the introduction of an iodine atom on the vanillyl moiety of Nonivamide causes a decrease in the antioxidant activity, and this effect is sensitive to the position of iodine on the aromatic ring, with 5IN substantially retaining the efficacy of Nonivamide to protect linoleic and cholesterol against free radical attack. Moreover, the pre-treatment with 5IN, at noncytotoxic concentrations, significantly preserved LDL from Cu(2+)-induced oxidative damage at 37 degrees C for 2h, inhibiting the reduction of polyunsaturated fatty acids and cholesterol and the increase of their oxidative products.
CONCLUSIONS:
The results of the present work suggest that 5IN exerts useful antioxidant properties in different in vitro systems of lipid peroxidation. This, coupled to its lacks of pungency and TRPV1 inhibiting properties, qualifies this phenolic compound as an attractive candidate for further investigations in vivo.

Capsaicin and nonivamide as novel skin permeation enhancers for indomethacin.[Pubmed: 11113638]

Eur J Pharm Sci. 2001 Jan;12(3):195-203.

METHODS AND RESULTS:
The study was conducted in vitro to investigate the changes of indomethacin transdermal permeation pretreated by capsaicin and Nonivamide, two compounds chemically similar to Azone. The combined effect of low frequency ultrasound (20 kHz) and enhancers on the indomethacin permeation was also evaluated. The experimental data demonstrated that capsaicin and Nonivamide significantly enhanced the flux of indomethacin across nude mouse skin. Enhancement effects of both analogues were very similar and depended predominantly on the concentration tested. Histological examination coupled with visual scores indicated the safety of capsaicin and Nonivamide on skin structure.
CONCLUSIONS:
Simultaneous application of ultrasound and enhancers significantly increased skin permeation of indomethacin compared with either ultrasound or enhancers alone. Better effect was obtained by the combination with capsaicin than Nonivamide.

Nonivamide enhances miRNA let-7d expression and decreases adipogenesis PPARγ expression in 3T3-L1 cells.[Pubmed: 25704235 ]

J Cell Biochem. 2015 Jun;116(6):1153-63.

Red pepper and its major pungent principle, capsaicin (CAP), have been shown to be effective anti-obesity agents by reducing energy intake, enhancing energy metabolism, decreasing serum triacylglycerol content, and inhibiting adipogenesis via activation of the transient receptor potential cation channel subfamily V member 1 (TRPV1). However, the binding of CAP to the TRPV1 receptor is also responsible for its pungent sensation, strongly limiting its dietary intake.
METHODS AND RESULTS:
Here, the effects of a less pungent structural CAP-analog, Nonivamide, on adipogenesis and underlying mechanisms in 3T3-L1 cells were studied. Nonivamide was found to reduce mean lipid accumulation, a marker of adipogenesis, to a similar extent as CAP, up to 10.4% (P < 0.001). Blockage of the TRPV1 receptor with the specific inhibitor trans-tert-butylcyclohexanol revealed that the anti-adipogenic activity of Nonivamide depends, as with CAP, on TRPV1 receptor activation. In addition, in cells treated with Nonivamide during adipogenesis, protein levels of the pro-adipogenic transcription factor peroxisome-proliferator activated receptor γ (PPARγ) decreased.
CONCLUSIONS:
Results from miRNA microarrays and digital droplet PCR analysis demonstrated an increase in the expression of the miRNA mmu-let-7d-5p, which has been associated with decreased PPARγ levels.

Nonivamide, a capsaicin analogue, exhibits anti-inflammatory properties in peripheral blood mononuclear cells and U-937 macrophages.[Pubmed: 27666931 ]

Mol Nutr Food Res. 2017 Feb;61(2).

Inflammation-related diseases are a worldwide problem. The counteraction of inflammation with compounds activating the trigeminal nerve is one strategy to fight these diseases. Known trigeminally active compounds found in black or red pepper are the tingling t-pellitorine, the pungent capsaicin, and the less pungent Nonivamide. The presented study compares the anti-inflammatory potential of Nonivamide to the two known anti-inflammatory compounds, elucidating the mechanism of action and the role of transient receptor protein (TRP) channels.
METHODS AND RESULTS:
Primary peripheral blood mononuclear cells (PBMCs) and U-937 macrophages were stimulated with 1 μg/mL LPS from Escherichia coli (EC-LPS) to induce inflammation. Nonivamide attenuated the EC-LPS induced release of IL-6 and TNF-α in PBMCs and U-937 macrophages determined by magnetic bead kit analysis. This anti-inflammatory mechanism was independent from nuclear factor-kappa B pathway but mitogen-activated protein kinase (MAPK) pathway may be involved. In addition, cotreatment of U-937 with the trigeminally active compound and an antagonist of TRPV1 or TRPA1 abolished the anti-inflammatory activity.
CONCLUSIONS:
Nonivamide possessed similar anti-inflammatory potential as capsaicin and t-pellitorine. In U-937 macrophages, the tested compounds exploited an anti-inflammatory effect by inhibiting the EC-LPS induced activation of the MAPK pathway. In addition, the TRP channel activation plays a role in the anti-inflammatory capacity of capsaicin and Nonivamide.