gram-negative bacteria

Anti gram-positive/negative bacteria agent 1 is an antibiotic linked with a synthetic MECAM-based siderophore, serving as a conjugate aimed at combating gram-positive and gram-negative bacteria.

BING, a antimicrobial peptide discovered in Japanese medaka fish (O. laptipes), originates from vacuolar protein sorting-associated protein 13D-like (Vps13D). It exhibits efficacy against a range of Gram-negative and Gram-positive bacteria, notably including methicillin-resistant S. aureus (MRSA; MICs = 4-64 µg/ml). Furthermore, BING enhances the effectiveness of antibiotics such as ampicillin, amoxicillin, and novobiocin against P. aeruginosa, and it prevents resistance development to kanamycin and ampicillin in E. coli. Notably, its administration in vivo significantly improves survival rates in O. laptipes challenged with E. tarda.

Durlobactam sodium salt (ETX2514 sodium salt) is an inhibitor of β-lactamase with IC50 values of 4 nM, 14 nM, and 190 nM for Class A KPC-2, Class C AmpC, and Class D OXA-24, respectively. Durlobactam sodium salt can be used in studies about drug-resistant Gram-negative bacteria including Acinetobacter baumannii.

Lipopolysaccharides (LPS) is a unique component of the cell wall of Gram-negative bacteria and consists of three regions: lipid A, oligosaccharide core, and O-specific polysaccharide (O-antigen). Lipopolysaccharides help maintain the integrity of the outer cell membrane and protect bacteria from damage by bile salts and lipid antibiotics. Lipopolysaccharides is a highly immunogenic antigen that can enhance immune responses and can be used for inflammation model construction.

Mupirocin calcium hydrate is an antibiotic produced by Pseudomonas fluorescens, showed a high level of activity against staphylococci and streptococci and against certain gram-negative bacteria

Ampicillin (Aminobenzylpenicillin) is a semi-synthetic penicillin belonging to the β-lactam group of antibiotics. Ampicillin has bactericidal activity against a wide range of Gram-positive and Gram-negative bacteria.

Berberine hydrogen sulphate (Umbellatine Sulfate) , an alkaloid extracted from several plants, possesses antimicrobial activity against a wide variety of microorganisms including Gram-positive and Gram-negative bacteria, fungi, and protozoa.

Penicillin G sodium(Benzylpenicillin sodium) salt is a penicillin derivative commonly used in the form of its sodium or potassium salts in the treatment of a variety of infections. It is effective against most gram-positive bacteria and against gram-negative cocci. It has also been used as an experimental convulsant because of its actions on GAMMA-AMINOBUTYRIC ACID mediated synaptic transmission.

Norfloxacin (MK-0366)(Norxacin) is a broad-spectrum antibiotic that is active against both Gram-positive and Gram-negative bacteria.

CysHHC10 acetate shows antibacterial activities against both Gram-positive and Gram-negative bacteria with MIC of 10.1, 20.2, 2.5, and 1.3 mM for E. coli, P. aeruginosa, S. aureus, and S. epidermidis, respectively.

Sarafloxacin (A56620) has antibacterial activities against Gram-positive and Gram-negative bacteria.

Imipenem (MK0787) is a thienomycin derivative that belongs to the class of antibiotics with antibacterial activity and partial inhibition against gram-positive and gram-negative bacteria. Imipenem can be used to study carbapenem non-susceptible infections and Pseudomonas aeruginosa biofilm infections.

SPR741 acetate is a cationic peptide derived from polymyxin B. It exhibits antimicrobial activity against gram-negative bacteria by inhibiting severe gram-negative bacterial sensory by increasing the permeability of the outer membrane of gram-negative bacteria.SPR741 acetate is often used in conjunction with antibiotics for the treatment of a number of diseases.

Moiramide B is a potent acetyl coenzyme A carboxylase (ACC) inhibitor (IC50:6 nM) with antimicrobial activity, strongly inhibiting Gram-positive bacteria but weakly inhibiting Gram-negative bacteria.

Polymyxin B nonapeptide acetate is a cationic cyclic peptide. Polyxin B nonapeptide is a derivative produced by enzymatic cleavage of polyxin B. Compared with polyxin B, polyxin B nonapeptide has low toxicity, lacks bactericidal activity and still has the

ALPHA-PINENE ((-)-Alpha-Pinene) is a bicyclic monoterpene found in pine trees and other plants, including Cannabis with diverse biological activities [1]. It reduces the growth of a panel of seven Gram-positive bacteria, seven Gram-negative bacteria, and eight yeast strains with MIC values of 0.75-1.29, 1.05-1.59, and 0.7-1.17%, respectively [2]. It has insecticidal activity against C. molestus larvae with LC50 values ranging from 47 to 49 mg/L.3 ALPHA-PINENE (100 μg/ml) induces apoptosis, increases anion superoxide production and DNA fragmentation, and activates caspase-3 in B16/F10 melanoma cells [4]. In a B16/F10 mouse xenograft model, ALPHA-PINENE(100 ml of a 10 mg/ml solution) reduces the number of metastatic lung nodules by approximately 7-fold. ALPHA-PINENE(8.6 mg/L, aerosol) also increases the time spent in the open arms of the elevated plus maze by approximately 2-fold in mice, indicating anxiolytic-like activity [5].

Magainin 1 acetate is an antimicrobial peptide. Magainin 1 acetate exhibits antibiotic activity against numerous Gram-negative and Gram-positive bacteria.

Sulopenem, an orally active, potent inhibitor of beta-lactamase, is a parenteral penem antibiotic with broad-spectrum activities against Gram-negative and Gram-positive bacteria.

Sapienic acid sodium is a fatty acid commonly. It has variable antimicrobial activities against Gram-positive and Gram-negative bacteria found on the skin and in the oral cavity.

MAC13243 HCl, an inhibitor of LolA, a periplasmic chaperone that transports lipoproteins from the inner membrane to the outer membrane, is an antimicrobial agent with specificity and significant inhibitory effects on Gram-negative bacteria.

Cephalexin (Cephacillin) is a cephalosporin antibiotic.

Midecamycin (Medecamycin A1), an acetoxy-substituted macrolide antibiotic, has effective on gram-positive and gram-negative bacteria acts by inhibiting bacterial protein synthesis.

Thiostrepton (Alaninamide) is a one of the CYCLIC PEPTIDES from Streptomyces that is active against gram-positive bacteria. In veterinary medicine, it has been used in mastitis caused by gram-negative organisms and in dermatologic disorders.

Polymyxin B nonapeptide, a cationic cyclic peptide derived by enzymatic processing from the naturally occurring peptide polymyxin B, is able to increase the permeability of the outer membrane of Gram-negative bacteria toward hydrophobic antibiotics probab

Nonacosane is a straight-chain alkane comprising of 29 carbon atoms. It has a role as a plant metabolite and a volatile oil component.

Nitrofurazone (Furacilin) is a topical anti-infective agent effective against gram-negative and gram-positive bacteria. It is used for superficial WOUNDS AND INJURIES and skin infections. Nitrofurazone(NFZ) has also been administered orally in the treatment of TRYPANOSOMIASIS.

Paromomycin binds specifically to the RNA oligonucleotide at the A site of bacterial 30S ribosomes, thereby causing misreading and premature termination of translation of mRNA and inhibition of protein synthesis followed by cell death. Paromomycin Sulfate (Aminosidine sulfate) is the sulfate salt form of paromomycin, a structural derivative of neomycin, an aminoglycoside antibiotic with amebicidal and bactericidal effects against predominantly aerobic gram-negative bacteria.

4-Hydroxybenzoic acid (4-hydroxybenzoate) is a monohydroxybenzoic acid, a phenolic derivative of benzoic acid. It is a white crystalline solid that is slightly soluble in water and chloroform but more soluble in polar organic solvents such as alcohols. It could inhibit most gram-positive and some gram-negative bacteria, with an IC50 of 160 μg/mL.

Tigecycline hydrate (GAR-936 hydrate) is a broad spectrum glycylcycline antibiotic. Tigecycline hydrate is bacteriostatic, that inhibits protein synthesis by binding to the 30S ribosomal subunit of bacteria and thereby blocking entry of Aminoacyl-tRNA into the A site of the ribosome during prokaryotic translation. Tigecycline hydrate is active against resistant strains of Gram-positive and Gram-negative bacteria .

Ceftaroline fosamil hydrate acetate is a powerful cephalosporin antibiotic that exhibits broad-spectrum efficacy against both Gram-positive pathogens, such as methicillin-resistant Staphylococcus aureus (MRSA) and multidrug-resistant Streptococcus pneumoniae, and common Gram-negative bacteria. It possesses anti-infective properties suitable for studying complicated skin and skin structure infections (cSSSIs) and community-acquired bacterial pneumonia (CABP) [1] [2] [3].

Polymyxin D2 is a cationic lipopeptide antibiotic against many species of Gram-negative bacteria.

TPU-0037C is a metabolite of the marine actinomycete S. platensis that is structurally similar to lydicamycin . It is active against Gram-positive bacteria (MICs = 0.39-3.13 μg/ml), including methicillin-resistant S. aureus strains (MIC = 3.13 μg/ml), but is ineffective against Gram-negative bacteria (MICs = >50 μg/ml).

Miloxacin is an antibiotic active against gram-negative bacteria.

Ajoene is a disulfide that has been found inA. sativumand has diverse biological activities, including antibacterial, anticancer, antiplatelet, and antioxidant properties.1,2,3,4It is active against Gram-positive (MICs = 5-160 µg/ml) and Gram-negative bacteria (MICs = 136-200 µg/ml), as well as yeasts (MICs = 10-20 µg/ml).1Ajoene is cytotoxic to mouse melanoma cells (IC50= 18 µM), as well as human colon, lung, mammary, and pancreatic cancer cells (IC50s = 7-41 µM).2It reduces tumor growth in a B16/BL6 mouse model of melanoma when administered at a dose of 25 mg/kg every other day and decreases the number of lung metastases when administered prior to tumor cell inoculation at doses ranging from 1-25 mg/kg. It inhibits ADP- or collagen-induced platelet aggregation in isolated baboon platelets when used at concentrations ranging from 75 to 150 µg/ml and in platelet-rich plasma isolated from baboons when administered at a dose of 25 mg/kg.3Ajoene (25 mg/kg) prevents thrombus formation on damaged arterial walls in heparinized pigs in anin situmodel of thrombogenesis.5It also reduces high-fat diet-induced hepatic steatosis, histopathological markers of liver damage, thiobarbituric acid reactive substances (TBARS) formation, and protein oxidation in a mouse model of non-alcoholic fatty liver disease (NAFLD).4 1.Naganawa, R., Iwata, N., Ishikawa, K., et al.Inhibition of microbial growth by ajoene, a sulfur-containing compound derived from garlicAppl. Environ. Microbiol.62(11)4238-4242(1996) 2.Taylor, P., Noriega, R., Farah, C., et al.Ajoene inhibits both primary tumor growth and metastasis of B16/BL6 melanoma cells in C57BL/6 miceCancer Lett.239(2)298-304(2006) 3.Teranishi, K., Apitz-Castro, R., Robson, S.C., et al.Inhibition of baboon platelet aggregation in vitro and in vivo by the garlic derivative, ajoeneXenotransplantation10(4)374-379(2003) 4.Han, C.Y., Ki, S.H., Kim, Y.W., et al.Ajoene, a stable garlic by-product, inhibits high fat diet-induced hepatic steatosis and oxidative injury through LKB1-dependent AMPK activationAntioxid. Redox Signal.14(2)187-202(2011) 5.Apitz-Castro, R., Badimon, J.J., and Badimon, L.A garlic derivative, ajoene, inhibits platelet deposition on severely damaged vessel wall in an in vivo porcine experimental modelThromb. Res.75(3)243-249(1994)

Urdamycin A is a bacterial metabolite originally isolated fromS. fradiaethat has antibacterial and anticancer activities.1,2It is active against a variety of Gram-positive and Gram-negative bacteria, includingB. subtilisand strains ofArthrobacterandStreptomyces, but not the fungusS. cerevisiae, in a disc assay when used at a concentration of 1 mg/ml.2Urdamycin A is cytotoxic to L1210 and HT-29, but not A549, cancer cells (IC50s = 7.5, 5, and >10 μg/ml, respectively).1

PBP10, a cell-permeable and selective gelsolin-derived peptide, inhibits formyl peptide receptor 2 (FPR2) over FPR1 [1]. This 10-amino acid (AA) peptide features a rhodamine conjugation at its N terminus, exhibiting bactericidal activity against both gram-positive and gram-negative bacteria while mitigating microbial-induced inflammatory effects [2].

Ibericin is an anthraquinone metabolite isolated from the root part of Prismatomeris filamentosa with some antibacterial activity against Gram-positive and Gram-negative bacteria.

Cefpodoxime sodium is a third generation cephalosporin antibiotic agent. It targets gram-positive and gram-negative bacteria, especially those responsible for otitis media and pharyngitis.

Citromycetin is a fungal metabolite originally isolated from Australian P. frequentans. It has antibiotic activity against the Gram-negative bacteria V. cholerae and S. flexneri and the Gram-positive bacteria S. aureus.

SCH 38519 is an isochromanequinone fungal metabolite originally isolated from Thermomonospora. It inhibits aggregation induced by thrombin , as well as inhibits serotonin secretion in human platelets (IC50s = 68 and 61 μg/ml, respectively). It inhibits the growth of various Gram-negative and Gram-positive bacteria (mean MICs = 122.1 and 0.92 μg/ml, respectively).

D-Nonamannuronic acid, an alginate oligomer derived from marine brown algae and certain Gram-negative bacteria, serves as an investigative compound in pain and vascular dementia research [1] [2] [3] [4].

Actinopyrone A is a pyrone isolated from S. pactum with diverse biological activities. It has selective and potent antimicrobial activity against H. pylori (MIC = 0.1 ng/mL) with no activity against other Gram-negative bacteria including E. coli, K. pneumoniae, P. aeruginosa, and B. fragilis. Actinopyrone A also mildly inhibits growth of Gram-positive bacteria and dermatophytes with MIC values ranging from <6.25 to 25 μg/mL. Intravenous administration of actinopyrone A (30 μg/kg) increases coronary blood flow in dogs by 196.2%.

Human β-defensin-2 (HβD-2) is a cationic skin-antimicrobial peptide (SAP) characterized by its small size and rich cysteine content. It is produced by various epithelial cells and exhibits potent antimicrobial properties against gram-negative bacteria and Candida. However, it does not effectively target gram-positive Staphylococcus aureus. Given these characteristics, Human β-defensin-2 serves as a valuable tool in colitis research.

Colistin (Polymyxin E), a polypeptide antibiotic with oral activity, exhibits strong efficacy against a range of Gram-negative rod-shaped bacteria, such as multidrug-resistant Pseudomonas aeruginosa, Acinetobacter baumannii, and Klebsiella pneumoniae. However, its use is associated with nephrotoxicity. It is primarily utilized in researching infections caused by Gram-negative bacilli [1] [2].

Poly(I:C):Kanamycin (1:1) sodium is a symmetric complex combining Poly(I:C) sodium, a synthetic double-stranded RNA analog acting as a TLR3 and RIG-I/MDA5 agonist, with Kanamycin, an antibacterial agent effective against both Gram-negative and positive bacteria by inhibiting translocation and causing miscoding on the 70S ribosomal subunit. Poly(I:C) sodium serves as a potent vaccine adjuvant, bolstering innate and adaptive immunity and prompting apoptosis in cancer cells [1] [2]. Meanwhile, Kanamycin exhibits significant efficacy against Mycobacterium tuberculosis, including drug-resistant strains, and Klebsiella pneumoniae, offering valuable insights for tuberculosis and pneumonia research [3] [4] [5] [6].

EcDsbB-IN-9 is a specific EcDsbB inhibitor, targeting disulfide bond forming enzyme DsbB of Gram-negative bacteria.

TPU-0037A is an antibiotic and a congener of lydicamycin . It inhibits the growth of Gram-positive bacteria, including methicillin-resistant S. aureus (MRSA), B. subtilis, and M. luteus (MICs = 1.56-12.5 μg/ml), but not Gram-negative E. coli, P. mirabilis, P. vulgaris, or P. aeruginosa strains (MICs = >50 μg/ml).

Fumiquinazoline D is a fungal metabolite originally isolated from A. fumigatus that has activity against Gram-positive and Gram-negative bacteria (MICs = 8-16 μg/ml) as well as F. solani and C. albicans fungi (MICs = 32 and 64 μg/ml, respectively).

Aspochalasin D is a co-metabolite originally isolated from A. microcysticus with aspochalasins A, B, and C, that was initially thought to be inactive. It has antibacterial activity against Gram-positive and Gram-negative bacteria at a concentration of 1 mg/ml. Aspochalasin D is more cytotoxic, via apoptosis, to Ba/F3-V12 cells in an IL-3-free medium than in an IL-3-containing medium (IC50s = 0.49 and 1.9 μg/ml, respectively).

Zifanocycline (KBP-7072) TFA is a semi-synthetic aminomethylcycline antibiotic with oral bioavailability, targeting bacterial ribosomes to impede their function. Displaying a broad spectrum of in vitro antimicrobial efficacy, it combats both Gram-positive and Gram-negative bacteria, inclusive of numerous multidrug-resistant strains. Its clinical investigations focus on efficacies in treating acute bacterial skin and skin structure infections, community-acquired bacterial pneumonia, and complicated intra-abdominal infections [1] [2].