Pharmacological restoration of autophagy reduces hypertension-related stroke occurrence.

Pharmacological restoration of autophagy reduces hypertension-related stroke occurrence.
Autophagy. 2019 Nov 03;:
Authors: Forte M, Bianchi F, Cotugno M, Marchitti S, De Falco E, Raffa S, Stanzione R, di Nonno F, Chimenti I, Palmerio S, Pagano F, Petrozza V, Micaloni A, Madonna M, Relucenti M, Torrisi MR, Frati G, Volpe M, Rubattu S, Sciarretta S
Abstract
The identification of the mechanisms predisposing to stroke may improve its preventive and therapeutic strategies in patients with essential hypertension. The role of macroautophagy/autophagy in the development of hypertension-related stroke needs to be clarified. We hypothesized that a defective autophagy may favor hypertension-related spontaneous stroke by promoting mitochondrial dysfunction. We studied autophagy in the stroke-prone spontaneously hypertensive (SHRSP) rat, which represents a clinically relevant model of stroke associated with high blood pressure. We assessed autophagy, mitophagy and NAD+:NADH levels in brains of SHRSP and stroke-resistant SHR fed with high salt diet. Vascular smooth muscle cells silenced for the mitochondrial complex I subunit Ndufc2 gene (NADH:ubiquinone oxidoreductase subunit C2) and cerebral endothelial cells isolated from SHRSP were also used to assess autophagy/mitophagy and mitochondrial function in response to high salt levels. We found a reduction of autophagy in brains of high salt-fed SHRSP. Autophagy impairment was associated with NDUFC2...

Source: Autophagy - November 2, 2019 Category: Cytology Authors: Forte M, Bianchi F, Cotugno M, Marchitti S, De Falco E, Raffa S, Stanzione R, di Nonno F, Chimenti I, Palmerio S, Pagano F, Petrozza V, Micaloni A, Madonna M, Relucenti M, Torrisi MR, Frati G, Volpe M, Rubattu S, Sciarretta S Tags: Autophagy Source Type: research