Results 1 to 10 of about 56,311 (156)
Sulbactam: A β–Lactam Compound with Neuroprotective Effects in Epilepsy [PDF]
Background: The pathophysiology of epilepsy is characterized by increased neuronal activity due to an excess of the excitatory neurotransmitter glutamate and a deficiency in the inhibitory neurotransmitter gamma–aminobutyric acid (GABA).
Fang-Chia Chang +8 more
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β-Lactam Antibiotics Renaissance
Since the 1940s β-lactam antibiotics have been used to treat bacterial infections. However, emergence and dissemination of β-lactam resistance has reached the point where many marketed β-lactams no longer are clinically effective.
Wenling Qin
exaly +3 more sources
Unraveling the mechanisms behind the enhanced efficacy of β-lactam-based sideromycins [PDF]
Previous studies have explored combining β-lactams with siderophores to create Trojan horse molecules that can penetrate the outer membrane of Gram-negative bacteria via TonB-dependent transporter (TBDT).
Evelyne Lacasse +8 more
doaj +2 more sources
β-lactam antibiotics are one of the most widely used and diverse classes of antimicrobial agents for treating both Gram-negative and Gram-positive bacterial infections.
Lekshmi Narendrakumar +4 more
doaj +1 more source
OBJECTIVE:. β-lactams are the cornerstone of empiric and targeted antibiotic therapy for critically ill patients. Recently, there have been calls to use β-lactam therapeutic drug monitoring (TDM) within 24–48 hours after the initiation of therapy in ...
Thomas J. Dilworth, PharmD +4 more
doaj +1 more source
Giant linear plasmids of β-lactam antibiotic producing Streptomyces [PDF]
A survey of the total cellular DNA from five β-lactam antibiotic-producing Streptomyces spp. by pulsed field gel electrophoresis was conducted to investigate the presence of linear plasmids. Streptomyces clavuligerus NRRL 3585 contained two giant linear plasmids of 120 and 430 kb, in addition to the well-characterized 11.7 kb linear plasmid ...
Donald J. Netolitzky +3 more
openaire +1 more source
A method to transform the β-lactam antibiotic producerStreptomyces wadayamensis [PDF]
We have developed a transformation system for Streptomyces wadayamensis, a cephamycin C producer. 1−5 × 109 protoplasts can be obtained when late logarithmic phase cultures of this microorganisms are incubated with 10 mg/ml of lysozyme. Polyethylene glycol-Ca2+-mediated transformation of these protoplasts yielded 106 transformants per μg of pIJ702 or ...
C. Acebal, V. Rubio, G. Márquez
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Stereoselective cyanation of 4-formyl and 4-imino-?-lactams: application to the synthesis of polyfunctionalized ?-lactams [PDF]
Peer ...
Alcaide, Benito +3 more
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Spherical and rod shaped protoplasts from β-lactam antibiotic treated cultures of Bacillus subtilis [PDF]
Addition of β-lactams to exponentially growing cultures of an autolytically deficient Bacillus subtilis metc3 lyt-2 strain FJ6 caused increase in optical density to stop after 1 h when it had about doubled, and thereafter to remain constant for at least 6 h.
G. Wright, H.J. Rogers
openaire +1 more source
The state and consideration for skin test of β-lactam antibiotics in pediatrics
β-lactam antibiotics are the most frequently used drugs and the most common drugs that cause allergic reactions in pediatrics. The occurrence of some allergic reactions can be predicted by skin testing, especially severe adverse reactions such as ...
Chunhui Gao +3 more
doaj +1 more source

