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S-allylcysteine in an acute myocardial infarction

Sunday, January 27, 2013 7:11
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Home of Kyle J. Norton for The Better of Living & Living Health Sulfur represents approximately 1/4% of our total body weight and occurs principally in the body as a constituent of the cysteine and methionine. It plays an important role in protein synthesis and enzyme reaction functions and is found abundantly in broccoli, cauliflower, cabbage, kale, kohlrabi, etc.
Organosulfides
Organosulfur compounds presented in natural food are generally considered as beneficial for health because of their antioxidant and anticarcinogenic properties. This has led to their excessive and long-term consumption. However, there is also evidence that these compounds demonstrate toxicity and adverse health effects suggesting their potential dual biological roles. Thus, they can act as double-edged biological swords(a).
S-Allyl cysteine (SAC) is a natural compound found abundantly in fresh and aged garlic.
S-allylcysteine in an acute myocardial infarction
S-allylcysteine (SAC) is an organosulfur-containing compound derived from garlic. According to the study by the National Univ. of Singapore, showed that  SAC significantly lowered mortality (12.5% vs. 33.3%, P < 0.05) and reduced infarct size. SAC + PAG- and PAG-treated rats had larger infarct sizes than controls (60.9 ± 0.01 and 62.0 ± 0.03%, respectively, vs. 50.0 ± 0.03%; P < 0.05). Pretreatment with SAC did not affect BP, but BP was significantly elevated in SAC + PAG and PAG-treated groups (P < 0.05). In addition, plasma H2S levels and left ventricular cystathionine-γ-lyase (CSE) activities were analyzed to investigate the involvement of H2S. CSE is the enzyme responsible for H2S production in the heart. SAC increased left ventricular CSE activity in AMI rats (2.75 ± 0.34 vs. 1.23 ± 0.16 μmol·g protein−1·h−1; P < 0.01). SAC + PAG-treated rats had significantly lower CSE activity compared with the SAC-treated group (1.22 ± 0.27 vs. 2.75 ± 0.34 μmol·g protein−1·h−1; P < 0.05). Similarly, SAC-treated rats had higher plasma H2S concentration compared with controls and the SAC + PAG-treated group. Protein expression studies revealed that SAC upregulated CSE expression (1.1-fold of control; P < 0.05), whereas SAC + PAG and PAG downregulated its expression (0.88-fold of control in both groups; P < 0.005)(3).


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Sources
(3) http://ajpheart.physiology.org/content/293/5/H2693.abstract http://medicaladvisorjournals.blogspot.com



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