Trimethoprim lactate 是一种抑菌抗生素 (antibiotic)，也是一种具有口服活性的二氢叶酸还原酶 (dihydrofolate reductase) 抑制剂。Trimethoprim lactate 对多种革兰氏阳性 (Gram-positive) 和革兰氏阴性需氧细菌 (Gram-negative aerobic bacteria) 具有活性。Trimethoprim lactate 可用于尿路感染，志贺氏菌病和肺孢子菌肺炎的研究。Trimethoprim lactate 与锌联合使用可抑制甲型流感病毒 (Influenza A virus) 对鸡胚的感染。

Trimethoprim lactate is a bacteriostatic antibiotic and an orally active dihydrofolate reductase inhibitor. Trimethoprim lactate is active against a wide range of Gram-positive and Gram-negative aerobic bacteria. Trimethoprim lactate has the potential for the research of urinary tract infections, Shigellosis and Pneumocystis pneumonia. Trimethoprim lactate can inhibit infection of Influenza A virus in chick embryo when combinated with zinc.

Solid

Dihydrofolate reductase, Bacteria
Influenza A virus

Trimethoprim interrupts folate metabolism by inhibition of the activity of dihydrofolase reductase (DHFR), which reduces dihydrofolate to tetrahydrofolate (THF).
Trimethoprim (3 μg/mL; 1 h) induces protein aggregation and main heat shock proteins (Hsps) in E. coli cells, which indicates that Trimethoprim sulfate presence leads to protein misfolding.
Trimethoprim (1.5-3 μg/mL; 1 h) causes induction of DnaK, DnaJ, GroEL, ClpB, and IbpA/B Hsps in E. coli cells exposed to folate and heat stress. has not independently confirmed the accuracy of these methods. They are for reference only.

Trimethoprim (10 mg/kg; i.v.; once every 12 h; 3 d) shows antibacterial activity against H. influenzae, S. pneumoniae, E. coli and N. meningitidis in infected mice.
Trimethoprim can be connected with the thiomaltose (TM-TMP) and shows stability with a half-life of about 1 hour in complete serum, and has an MIC value around 1 μM against E. coli.
Trimethoprim (10 mg/mL; 0.5 mL; inject with Trimethoprim-Zn combined suspension) decreases the virus titer and increases the survival rate of chicken embryo. has not independently confirmed the accuracy of these methods. They are for reference only.

Room temperature in continental US; may vary elsewhere.

4°C, sealed storage, away from moistur In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

[1]. Ewa Laskowska, et al. Trimethoprim Induces Heat Shock Proteins and Protein Aggregation in E. Coli Cells. Curr Microbiol. 2003 Oct;47(4):286-9.
[2]. R N Brogden, et al. Trimethoprim: A Review of Its Antibacterial Activity, Pharmacokinetics and Therapeutic Use in Urinary Tract Infections. Drugs. 1982 Jun;23(6):405-30.
[3].

In Vitro: DMSO : 250 mg/mL (657.20 mM; Need ultrasonic)H₂O : 16.67 mg/mL (43.82 mM; Need ultrasonic)配制储备液