Protein Information

Name nNOS
Synonyms Constitutive NOS; NOS1; IHPS 1; IHPS1; N NOS; NC NOS; NOS; NOS type I…

Compound Information

Name rotenone
CAS

Reference List

PubMed Abstract RScore(About this table)
14642398 Gil J, Almeida S, Oliveira CR, Rego AC: Cytosolic and mitochondrial ROS in staurosporine-induced retinal cell apoptosis. Free Radic Biol Med. 2003 Dec 1;35(11):1500-14.

Endogenous sources of ROS production were investigated by testing the effect of the following inhibitors: 7-nitroindazole (7-NI), a specific inhibitor of the neuronal isoform of nitric oxide synthase (nNOS); arachidonyl trifluoromethyl ketone (AACOCF (3)), a phospholipase A (2) (PLA (2)) inhibitor; allopurinol, a xanthine oxidase inhibitor; and the mitochondrial inhibitors rotenone and oligomycin.
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16085056 Bae SY, Xu Q, Hutchinson D, Colton CA: Y+ and y+ L arginine transporters in neuronal cells expressing tyrosine hydroxylase. Biochim Biophys Acta. 2005 Aug 15;1745(1):65-73. Epub 2005 Feb 9.

Neurons that express nNOS require intracellular arginine to generate nitric oxide (NO).
Short term exposure to the oxidizing agents, rotenone and Angeli's salt, but not FeSO4, increases arginine transport.
1(0,0,0,1) Details
9694040 Cutillas B, Espejo M, Ambrosio S: 7-Nitroindazole prevents dopamine depletion caused by low concentrations of MPP+ in rat striatal slices. Neurochem Int. 1998 Jul;33(1):35-40.

This protection was reproduced with other less specific NOS-inhibitors, such as nitro-arginine and nitro-arginine methylester. 7-nitroindazole did not protect against the dopamine depletion caused by the non-specific mitochondrial chain blocker rotenone.
The inhibition of nNOS may protect against dopamine loss at early stages of a neurodegenerative process, and it could then be considered in the treatment or prevention of neurodegenerative human processes such as Parkinson's disease.
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19103678 Dedkova EN, Blatter LA: Characteristics and function of cardiac mitochondrial nitric oxide synthase. J Physiol. 2009 Feb 15;587(Pt 4):851-72. Epub 2008 Dec 22.


Collapsing the mitochondrial membrane potential with the protonophore FCCP or blocking the mitochondrial Ca (2+) uniporter with Ru360 as well as blocking the respiratory chain with rotenone or antimycin A in combination with oligomycin inhibited mitochondrial NO production.
0(0,0,0,0) Details