Abstract
Background. We investigated the occluded essential vessel tributaries, both arterial and venous, occluded superior mesenteric vein and artery in rats, consequent noxious syndrome, peripherally and centrally. As therapy, we hypothesized the rapidly activated alternative bypassing pathways, arterial and venous, and the stable gastric pentadecapeptide BPC 157 since it rapidly alleviated venous occlusion syndromes. Methods. Assessments were performed for 30 min (gross recording, venography, ECG, pressure, microscopy, biochemistry, and oxidative stress), including portal hypertension, caval hypertension, aortal hypotension, and centrally, the superior sagittal sinus hypertension; systemic arterial and venous thrombosis, ECG disturbances, MDA-tissue increase, the multiple organs lesions, heart, lung, liver, kidney and gastrointestinal tract, including brain (swelling, and cortex (cerebral, cerebellar), hypothalamus/thalamus, hippocampus lesions). Rats received BPC 157 medication (10 µg/kg, 10 ng/kg) intraperitoneally at 1 min ligation-time. Results. BPC 157 rapidly activated collateral pathways. These collateral loops were the superior mesenteric vein-inferior anterior pancreaticoduodenal vein-superior anterior pancreaticoduodenal vein-pyloric vein-portal vein pathway, an alternative pathway toward inferior caval vein via the united middle colic vein and inferior mesenteric vein through the left colic vein, and the inferior anterior pancreaticoduodenal artery and inferior mesenteric artery. Consequently, BPC 157 counteracted the superior sagittal sinus, portal and caval hypertension, aortal hypotension, progressing venous and arterial thrombosis peripherally and centrally, ECG disturbances attenuated. Markedly, the multiple organs lesions, heart, lung, liver, kidney, and gastrointestinal tract, in particular, as well as brain lesions, and oxidative stress in tissues were attenuated. Conclusions. BPC 157 therapy rapidly recovered rats, which have complete occlusion of the superior mesenteric vein and artery.
Highlights
Simultaneous occlusion of the superior mesenteric artery and vein is a rare but serious complication and has recently been reported in COVID-19 patients [1]
Based on the reported benefits of BPC 157, we examined the effect of therapy with this peptide on the syndrome produced due to simultaneous occlusion of the superior mesenteric vein and artery
Since BPC 157 is an effective therapy in rats with peripheral venous occlusion syndromes [5,6,7], we tested whether it could counteract the simultaneous occlusion of the end of the superior mesenteric vein and the superior mesenteric artery close to its aortal origin
Summary
Simultaneous occlusion of the superior mesenteric artery and vein is a rare but serious complication and has recently been reported in COVID-19 patients [1]. The stable gastric pentadecapeptide BPC 157 has been shown to alleviate venous occlusion syndromes—inferior caval vein syndrome [5], Pringle manoeuvre ischemia/reperfusion [6], and Budd Chiari syndrome [7]—rapidly activating alternative bypassing pathways. These bypassing loops—the left ovarian vein [5], the inferior mesenteric vein [6], and the azygos vein [7]—are reliant on the corresponding injurious occlusion [5,6,7] to re-establish blood flow that compensates for vessel occlusion.
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