Ampicillin sodium

Chemical properties

White or almost white powder, hygroscopic.

The Uses of Ampicillin sodium

Ampicillin sodium salt is a reagent for transformed cells expressing beta-lactamase. It acts as a structural analogue of acyl-D-alanyl-D-alanine, acylates the transpeptidase enzyme and prevents the cross-linking of the peptidoglycan of the cell wall necessary for the growth of the bacterium.

The Uses of Ampicillin sodium

Penicillin antibacterial.

The Uses of Ampicillin sodium

diuretic, anti-hypertensive

What are the applications of Application

Ampicillin sodium salt, cell culture grade is a widely used cell culture antibiotic

Definition

ChEBI: Ampicillin sodium is an organic sodium salt. It contains an ampicillin(1-).

brand name

Polycillin-N (Bristol-Myers Squibb).

General Description

Chemical structure: ?-lactam

Biological Activity

ampicillin sodium is a competitive inhibitor of the enzyme transpeptidase with ic50 value of 1.8 μg/ml [1].ampicillin is a β-lactam antibiotic that kills bacteria by inhibiting transpeptidase reactions. transpeptidase is involved in the final stages of cell wall biosynthesis and inhibition of it ultimately leads to cell lysis [1].in e. coli 146 cells treated with ether, ampicillin showed no significant inhibition on the transpeptidase reaction at concentrations below 0.5 μg/ml, but exhibited 50% inhibition at the concentration of 1.8 μg/ml. in e. coli 146 cells, the minimal inhibitory concentration (mic) of ampicillin was 3.1 μg/ml [1]. in e. coli and s. typhi, ampicillin and epicillin at concentrations close to mic values killed bacteria at slower rates than amoxycillin [2].in experimental mouse infections, oral or subcutaneous treatment of ampicillin at the dose of 0.2 ml/20 g was significantly more effective than epicillin and amoxycillin against the majority of infections [2].[1]. moore b a, jevons s, brammer k w. inhibition of transpeptidase activity in escherichia coli by thienamycin. antimicrobial agents and chemotherapy, 1979, 15(6): 831-833.[2]. basker m j, gwynn m n, white a r. comparative activities of ampicillin, epicillin and amoxycillin in vitro and in vivo. chemotherapy, 1979, 25(3): 170-180.

Contact allergens

Ampicillin caused contact dermatitis in a nurse also sensitized to amoxicillin (with tolerance to oral phenoxymethylpenicillin) and in a pharmaceutical factory worker. Systemic drug reactions are common. Crossreactivity is regular with ampicillin and can occur with other penicillins.

Biochem/physiol Actions

Mode of Action: This is a ?-lactam antibiotic that inhibits bacterial cell-wall synthesis by inactivating transpeptidases on the inner surface of the bacterial cell membrane. Mode of Resistance: Administration with ?-lactamase cleaves the ?-lactam ring of Ampicillin and inactivates it. Antimicrobial Spectrum: Includes both gram-positive (similar to benzylpenicillin) and gram-negative bacteria (similar to tetracyclines and chloramphenicol.

Safety Profile

Moderately toxic by intraperitoneal route. Human systemic effects by ingestion: hypermotility, diarrhea, and other gastrointestinal changes. Questionable carcinogen. When heated to decomposition it emits very toxic fumes of NOx, Na2O, and SOx.

storage

+4°C