Related Experiment Video
Updated: Jul 10, 2026

03:55
A Sensitive Visual Method for the Detection of Hydrogen Sulfide Producing Bacteria
Published on: June 27, 2022
Hydrogen sulphide and its therapeutic potential
1Ikaria Inc., 1616 Eastlake Ave East, Suite 340, Seattle, Washington 98102, USA. csaba.szabo@ikaria.com
Nature Reviews. Drug Discovery
|October 20, 2007
Summary
Hydrogen sulphide (H2S), a key signaling molecule, plays roles in cardiovascular and nervous systems. Research explores H2S
Area of Science:
- Biochemistry
- Physiology
- Pharmacology
Background:
- Hydrogen sulphide (H2S) is recognized as a crucial signaling molecule in the cardiovascular and nervous systems.
- H2S is endogenously produced from L-cysteine, primarily by cystathionine gamma-lyase and cystathionine beta-synthase.
Purpose of the Study:
- To overview the physiology and biochemistry of H2S.
- To summarize the therapeutic potential of H2S modulation in disease models.
Main Methods:
- Review of existing literature on H2S.
- Analysis of studies involving H2S production inhibitors and H2S donor compounds in animal models.
Main Results:
- Inhibitors and donors of H2S show significant effects in models of inflammation, reperfusion injury, and circulatory shock.
- H2S can induce reversible hypothermia and a suspended-animation-like state in rodents.
Conclusions:
- H2S is a vital signaling molecule with broad physiological roles.
- Modulating H2S offers potential therapeutic strategies for various diseases.
More Related Videos
Related Concept Videos
Preparation and Reactions of Sulfides
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
Preparation and Reactions of Thiols
Thiols are prepared using the hydrosulfide anion as a nucleophile in a nucleophilic substitution reaction with alkyl halides. For instance, bromobutane reacts with sodium hydrosulfide to give butanethiol.
Structure and Nomenclature of Thiols and Sulfides
Thiols and sulfides are sulfur analogs of alcohols and ethers, respectively, where the sulfur atom takes the place of the oxygen atom. Thus, thiols are generally represented as RSH, where R is an alkyl substituent and —SH is the functional group. On the other hand, in sulfides, the central sulfur atom is bonded to two hydrocarbon groups on either side. Depending upon the type of group, sulfides can be either symmetrical or asymmetrical. Both thiols and sulfides display a bent geometry, similar...
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
Sulfur Assimilation
Sulfur is an essential element in biological systems, contributing to synthesizing key biomolecules, including amino acids such as cysteine and methionine, and cofactors such as coenzyme A and biotin. Microorganisms primarily assimilate sulfur as sulfate (SO₄²⁻) from the environment, which must undergo a series of biochemical transformations before it can be incorporated into cellular components. As sulfate is highly oxidized, it must undergo assimilatory sulfate reduction to become...
Amines to Sulfonamides: The Hinsberg Test
The Hinsberg test is a method to identify primary, secondary and tertiary amines, named after its pioneer, Oscar Hinsberg. Here, amines are treated with benzenesulfonyl chloride, also known as the Hinsberg reagent, in the presence of an excess of aqueous base, followed by acidification. Based on the nature of the amines, different changes are observed.
Generally, a primary amine reacts with the Hinsberg reagent to produce an N-substituted benzenesulfonamide. The electron-withdrawing sulfonyl...
Generally, a primary amine reacts with the Hinsberg reagent to produce an N-substituted benzenesulfonamide. The electron-withdrawing sulfonyl...

