Potential role of hydrogen sulfide in osteoarthritis

Magro, Cynthia M.; Henriques, Roberto; Mirco, T; Sampaio, Fernanda Araújo

doi:10.23853/bsehm.2018.0601

Cited by 1 publication

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“…Pathological conditions associated with so-called “H 2 S-poor” disease states—and amenable to correction by H 2 S donors—include ( 243 , 295 ) aging, ischemia, cardiac hypertrophy, heart failure (HF), liver disease (cirrhosis, steatosis), hypertension, atherosclerosis, endothelial dysfunction, diabetic complications, preeclampsia, Alzheimer's disease (AD), and Huntington's disease (HD). Further, Szabo and Papapetropoulos rightly point out that not only H 2 S-poor diseases can be corrected by H 2 S supplementation, since “there are also several indications where endogenous H 2 S levels are not suppressed, and yet H 2 S donation may be beneficial or warranted.” Additional evidence, obtained mainly after the list just cited was compiled, supports considering therapeutic application of H 2 S prodrugs in cancer ( 148 ), psoriasis ( 12 ), multiple viral infections ( 24 , 25 ), colitis ( 180 ), autoimmune pathologies ( 42 ), systemic sclerosis ( 2 ), multiple sclerosis ( 245 ), Parkinson's disease (PD) ( 111 ), intracerebral hemorrhage ( 288 ), Duchenne muscular dystrophy/cardiomyopathy ( 44 ), allergic diseases ( 173 ), fibrotic disorders ( 229 ), osteoarthritis ( 164 ), osteoporosis ( 281 ), sarcopenia ( 32 ), pulmonary hypertension ( 287 ), ocular hypertension ( 225 ), kidney diseases ( 15 ), hearing loss ( 152 ), lens opacification ( 190 ), testicular dysfunction ( 262 ), male subfertility ( 178 ), erectile dysfunction ( 64 ), and periodontitis ( 89 ) as well.…”

Section: Prodrug-based H 2 S Supplementation Is a mentioning

confidence: 99%

SG1002 and Catenated Divalent Organic Sulfur Compounds as Promising Hydrogen Sulfide Prodrugs

Gojon¹,

Morales²

2020

Antioxidants & Redox Signaling

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Significance: Sulfur has a critical role in protein structure/function and redox status/signaling in all living organisms. Although hydrogen sulfide (H 2 S) and sulfane sulfur (SS) are now recognized as central players in physiology and pathophysiology, the full scope and depth of sulfur metabolome's impact on human health and healthy longevity has been vastly underestimated and is only starting to be grasped. Since many pathological conditions have been related to abnormally low levels of H 2 S/SS in blood and/or tissues, and are amenable to treatment by H 2 S supplementation, development of safe and efficacious H 2 S donors deserves to be undertaken with a sense of urgency; these prodrugs also hold the promise of becoming widely used for disease prevention and as antiaging agents. Recent Advances: Supramolecular tuning of the properties of well-known molecules comprising chains of sulfur atoms (diallyl trisulfide [DATS], S 8) was shown to lead to improved donors such as DATS-loaded polymeric nanoparticles and SG1002. Encouraging results in animal models have been obtained with SG1002 in heart failure, atherosclerosis, ischemic damage, and Duchenne muscular dystrophy; with TC-2153 in Alzheimer's disease, schizophrenia, age-related memory decline, fragile X syndrome, and cocaine addiction; and with DATS in brain, colon, gastric, and breast cancer. Critical Issues: Mode-of-action studies on allyl polysulfides, benzyl polysulfides, ajoene, and 12 ringsubstituted organic disulfides and thiosulfonates led several groups of researchers to conclude that the anticancer effect of these compounds is not mediated by H 2 S and is only modulated by reactive oxygen species, and that their central model of action is selective protein S-thiolation. Future Directions: SG1002 is likely to emerge as the H 2 S donor of choice for acquiring knowledge on this gasotransmitter's effects in animal models, on account of its unique ability to efficiently generate H 2 S without byproducts and in a slow and sustained mode that is dose independent and enzyme independent. Efficient tuning of H 2 S donation characteristics of DATS, dibenzyl trisulfide, and other hydrophobic H 2 S prodrugs for both oral and parenteral administration will be achieved not only by conventional structural modification of a lead molecule but also through the new ''supramolecular tuning'' paradigm. Antioxid. Redox Signal. 33, 1010-1045.

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