ampicillin


Also found in: Dictionary, Thesaurus, Medical, Acronyms, Wikipedia.

ampicillin

(ăm'pĭsĭl`ĭn), a penicillinpenicillin,
any of a group of chemically similar substances obtained from molds of the genus Penicillium that were the first antibiotic agents to be used successfully in the treatment of bacterial infections in humans.
..... Click the link for more information.
-type antibioticantibiotic,
any of a variety of substances, usually obtained from microorganisms, that inhibit the growth of or destroy certain other microorganisms. Types of Antibiotics
..... Click the link for more information.
 that is effective against both gram-negative microorganisms and gram-positive microorganisms such as Escherichia coli. It is often used in the treatment of urinary tract infections, but resistant organisms are increasingly common (see drug resistancedrug resistance,
condition in which infecting bacteria can resist the destructive effects of drugs such as antibiotics and sulfa drugs. Drug resistance has become a serious public health problem, since many disease-causing bacteria are no longer susceptible to previously
..... Click the link for more information.
). Like other penicillin antibiotics, ampicillin acts against bacteria by inhibiting the synthesis of bacterial cell wall components.
References in periodicals archive ?
Most of the uropathogens isolated in our study were found to be resistant to commonly used first line antibiotics especially Ampicillin, Gentamycin, Amoxyclav, Cefuroxime, Ciprofloxacin, TMP + SMZ and Norfloxacin, while most of them were sensitive to Imipenem, Meropenem, Tigecycline, Cefoperazone + Sulbactam and Nitrofurantoin.
The combination of ampicillin and cefixime showed as synergistic for a single isolate of E.coli.
We defined 3 mutually exclusive categories of clinically important resistance according to results of testing for ceftriaxone, ciprofloxacin, and ampicillin (Figure 1) (8,19): ceftriaxone/ampicillin resistance indicates resistance to ceftriaxone and ampicillin (because all ceftriaxone-resistant isolates are ampicillin resistant); ciprofloxacin nonsusceptibility indicates nonsusceptibility to ciprofloxacin but susceptibility to ceftriaxone; and ampicillin-only resistance indicates resistance to ampicillin but susceptibility to ceftriaxone and ciprofloxacin.
The aim of the present study was to determine antimicrobial susceptibility profiles of ampicillin resistant enterococci from dogs and cats' rectal swab samples and the occurrence of five virulence determinants in those isolates.
Salmonella Paratyphi A in this study showed low resistance against most antimicrobials such as ampicillin, trimethoprim-sulfamethoxazole, ceftriaxone, cefotaxime, ciprofloxacin, and levofloxacin (6.7%, 8.0%, 1.3%, 2.7%, 0.0%, and 1.3%, resp.).
Keeping this in view, the determination of bioactivity potential of extracts of Ocimum basilicum, Thymus vulgaris, Rosmarinus officinalis and Origanum vulgare was evaluated against ampicillin resistant Gram negative bacteria.
According to the company, the Ampicillin and Sulbactam for Injection USP, 1.5 g/vial (1 g Ampicillin as the Sodium Salt and 0.5 g Sulbactam as the Sodium Salt), and 3 g/vial (2 g ampicillin as the sodium salt plus 1 g sulbactam as the sodium salt), and 15 g, Pharmacy Bulk Package, (10 g Ampicillin as the Sodium Salt and 5 g Sulbactam as the Sodium Salt) is the generic version of Pfizer's Unasyn.
saprophyticus by the Phoenix nitrocefin test and the BD-BBL chromogenic cefinase disk test methods, and to correlate those results with Phoenix penicillin MIC and ampicillin 2 [micro]g DD.
In the present work, hydrophobic PU and hydrophilic ampicillin are mixed together in the same solvent and electrospun into a fibrous scaffold.