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How Long Does Antimycobacterial Antibiotic-loaded Bone Cement Have In Vitro Activity for Musculoskeletal Tuberculosis?

 Lee, Jae Hoo  ;  Han, Chang Dong  ;  Cho, Sang-Nae  ;  Yang, Ick Hwan  ;  Lee, Woo Suk  ;  Baek, Seung-Hun  ;  Shin, Jae Won  ;  Husein, Khalid Elfadil Ibrahim  ;  Park, Kwan Kyu 
 Clinical Orthopaedics and Related Research, Vol.475(11) : 2795-2804, 2017 
Journal Title
 Clinical Orthopaedics and Related Research 
Issue Date
Amoxicillin-Potassium Clavulanate Combination/chemistry ; Amoxicillin-Potassium Clavulanate Combination/pharmacology* ; Antitubercular Agents/chemistry ; Antitubercular Agents/pharmacology* ; Bone Cements/chemistry ; Bone Cements/pharmacology* ; Chromatography, High Pressure Liquid ; Drug Carriers* ; Drug Liberation ; Humans ; Mass Spectrometry ; Microbial Sensitivity Tests ; Mycobacterium tuberculosis/drug effects* ; Mycobacterium tuberculosis/growth & development ; Streptomycin/chemistry ; Streptomycin/pharmacology* ; Time Factors ; Tuberculosis, Osteoarticular/drug therapy* ; Tuberculosis, Osteoarticular/microbiology
BACKGROUND: Antibiotic-loaded bone cement is accepted as an effective treatment modality for musculoskeletal tuberculosis. However, comparative information regarding combinations and concentrations of second-line antimycobacterial drugs, such as streptomycin and amoxicillin and clavulanic acid, are lacking. QUESTIONS/PURPOSES: (1) In antibiotic-loaded cement, is there effective elution of streptomycin and Augmentin® (amoxicillin and clavulanic acid) individually and in combination? (2) What is the antibacterial activity duration for streptomycin- and amoxicillin and clavulanic acid -loaded cement? METHODS: Six different types of bone cement discs were created by mixing 40 g bone cement with 1 or 2 g streptomycin only, 0.6 g or 1.2 g Augmentin® (amoxicillin and clavulanic acid) only, and a combination of 1 g streptomycin plus 0.6 g amoxicillin and clavulanic acid and 2 g streptomycin plus 1.2 g amoxicillin and clavulanic acid. Five bone discs of each type were incubated in phosphate buffered saline for 30 days with renewal of the phosphate buffered saline every day. The quantity of streptomycin and/or amoxicillin and clavulanic acid in eluates were measured by a liquid chromatography-mass spectrometry system, and the antimycobacterial activity of eluates against Mycobacterium tuberculosis H37Rv, were calculated by comparing the minimal inhibitory concentration of each eluate with that of tested drugs using broth dilution assay on microplate. RESULTS: Streptomycin was detected in eluates for 30 days (in 1 g and 2 g discs), whereas 1.2 g amoxicillin and clavulanate eluted until Day 7 and 0.6 g amoxicillin and clavulanate until Day 3. All eluates in streptomycin-containing discs (streptomycin only, and in combination with amoxicillin and clavulanic acid) had effective antimycobacterial activity for 30 days, while amoxicillin and clavulanate-only preparations were only active until Day 14. The antimycobacterial activity of eluates of 2 g streptomycin plus 1.2 g amoxicillin and clavulanate were higher than those of discs containing 1 g streptomycin plus 0.6 g amoxicillin and clavulanate until Day 3, without differences (Day 3, 1 g streptomycin plus 0.6 g amoxicillin and clavulanate: 17.5 ± 6.85 ug/mL; 2 g streptomycin plus 1.2 g amoxicillin and clavulanate: 32.5 ± 16.77 ug/mL; p = 0.109). After Day 7, however, values of the two combinations remained no different than that of Day 30 (Day 30, 1 g streptomycin plus 0.6 g amoxicillin and clavulanate: 0.88 ± 0.34 ug/mL; 2 g streptomycin plus 1.2 g amoxicillin and clavulanate: 0.59 ± 0.94 ug/mL; p = 0.107). CONCLUSIONS: Streptomycin, in the form of antibiotic-loaded bone cement, had effective elution characteristics and antimycobacterial effects during a 30-day period, whereas amoxicillin and clavulanate only had effective elution and antimycobacterial characteristics during the early period of this study. The two drugs did not interfere with each other during the elution test. CLINICAL RELEVANCE: This research revealed that combinations of streptomycin and amoxicillin and clavulanate mixed with bone cement are effective for 30 days. Further trials to determine various different combinations of drugs are necessary to improve the effectiveness of treatments for musculoskeletal tuberculosis.
Appears in Collections:
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Orthopedic Surgery (정형외과학교실)
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Microbiology (미생물학교실)
Yonsei Authors
박관규(Park, Kwan Kyu) ; 신재원(Shin, Jae Won) ; 양익환(Yang, Ick Hwan) ; 이우석(Lee, Woo Suk) ; 이재후(Lee, Jae Hoo) ; 조상래(Cho, Sang Nae) ; 한창동(Han, Chang Dong)
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