title: Anti-inflammatory and antimicrobial effects of nanocatechin in a chronic bacterial prostatitis rat model.
abstract: Chronic bacterial prostatitis (CBP) is one of the most common relapsing urinary tract infection (UTI) in males. Catechin, an extract of green tea, is known to have anti-inflammatory and antimicrobial effects against various bacteria. However, catechin can be easily degenerated during digestion, and this may result in decreased absorption into the body. Nanocatechin is catechin coated with hydroxypropyl methyl cellulose by nanotechnology. It reduces degeneration during digestion and enhances absorption of catechin into the body. We evaluated the anti-inflammatory and antimicrobial effect of nanocatechin on CBP and also analyzed plasma concentration of catechins to evaluate absorptivity in an animal model. Forty rats demonstrating CBP were randomly divided into four groups: control, ciprofloxacin, catechin, and nanocatechin. After treatment, the results of microbiological culture of prostate and urine samples as well as histological findings of the prostate in each group were analyzed. Plasma concentration of catechins in catechin and nanocatechin groups was compared. The use of ciprofloxacin, catechin, and nanocatechin showed statistically significant decrease in bacterial growth and improvement in prostatic inflammation compared with the control group. The nanocatechin group showed statistically significant decrease in bacterial growth and improvement in prostatic inflammation compared with the catechin group. Plasma concentrations of epicatechin, gallocatechin gallate, and epigallocatechin gallate were significantly higher in the nanocatechin group than those in the catechin group. These results suggest that nanocatechin has better antimicrobial and anti-inflammatory effects on rat CBP than catechin due to higher absorption into the body.
authors.affiliation: Department of Urology, St Mary's Hospital, The Catholic University of Korea College of Medicine, 62 Youido-dong, Youngdungpoku, Seoul, 150-713, Korea.
authors.forename: Byung Il
authors.initials: BI
authors.lastname: Yoon
authors.forename: U-Syn
authors.initials: US
authors.lastname: Ha
authors.forename: Dong Wan
authors.initials: DW
authors.lastname: Sohn
authors.forename: Seung-Ju
authors.initials: SJ
authors.lastname: Lee
authors.forename: Hyun Woo
authors.initials: HW
authors.lastname: Kim
authors.forename: Chang Hee
authors.initials: CH
authors.lastname: Han
authors.forename: Choong Bum
authors.initials: CB
authors.lastname: Lee
authors.forename: Yong-Hyun
authors.initials: YH
authors.lastname: Cho
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology / Q000627:therapeutic use*; D000893:Anti-Inflammatory Agents / Q000494:pharmacology / Q000627:therapeutic use*; D002392:Catechin / Q000494:pharmacology / Q000627:therapeutic use*; D002908:Chronic Disease; D004195:Disease Models, Animal; D004926:Escherichia coli / Q000187:drug effects*; D004927:Escherichia coli Infections / Q000188:drug therapy* / Q000382:microbiology; D006801:Humans; D008297:Male; D011467:Prostate / Q000382:microbiology / Q000473:pathology; D011472:Prostatitis / Q000188:drug therapy* / Q000382:microbiology; D051381:Rats; D017208:Rats, Wistar
chemical_list: D000900:Anti-Bacterial Agents; D000893:Anti-Inflammatory Agents; D002392:Catechin