• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제38권2호
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• pp.90-95
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• 2012

Objectives: This study was conducted in order to assess the efficacy of 1st generation cephalosporin as use as a single-dose preoperative prophylactic antibiotic for surgical wound infections resulting from intra-oral bone grafting procedures. Materials and Methods: A total of 23 patients who were to undergo intra-oral bone graft procedures participated in this study. After randomization, 2 grams of 1st generation cephalosporin was orally administered to both the experimental and placebo groups one hour prior to surgery in a double-blind fashion. Post-operatively, the experimental group (12 patients) was orally administered placebo three times a day for three days. The control group (11 patients) was orally administered 1st generation cephalosporin three times a day for three days. The postoperative course was observed for one month including the clinical parameters associated with infection. Results: Postoperative infections were noted in 1 out of 11 patients in the experimental group. No infections occurred in the control group. Conclusion: There was no significant difference in the incidence of postoperative infections between the two groups. Two grams of 1st generation cephalosporin administered orally one hour before surgery served as an effective prophylactic antibiotics therapy for intra-oral bone graft surgery.

• 한국환경성돌연변이발암원학회:학술대회논문집
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• 한국환경성돌연변이발암원학회 2001년도 Korean Environmental Mutagen Society
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• pp.180-180
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• 2001

• Journal of Pharmaceutical Investigation
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• 제32권2호
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• pp.73-80
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• 2002

Cefuroxime axetil is a cephalosporin antibiotic having a high activity against a wide spectrum of Grampositive and Gram-negative microorganisms. It is a cephalosporin antibiotic which exist as 2 diastereoisomers: diastereoisomer A and B. It shows polymorphism of three forms: a crystalline form having a melting point of about $180^{\circ}C$, a substantially amorphous form having a high melting point of about $135^{\circ}C$ and a substantially amorphous form having a low melting point of about 70^{\circ}C$. The crystalline form of cefuroxime axetil is slightly soluble in water because diastereoisomer A has lower solubility than B in water. Substantially amorphous form of which there are no difference in solubility between diastereoisomer A and B has better solubility than crystalline form, but it forms a thicker gel than crystalline form upon contact with an aqueous medium. Based on this reason, cefuroxime axetil is not readily absorbable in the gastrointestinal tract, rendering its bioavailability on oral administration very low. The object of this study was to develop an improved non-crystalline cefuroxime axetil composition having a high physicochemical stability and bioavailability. A non-crystalline cefuroxime axetil solid dispersant showing no peak on a Differential Scanning Calorimetry (DSC) scan is prepared by dissolving cefuroxime axetil and a surfactant in an organic solvent; suspending a water-insoluble inorganic carrier in the resulting solution; and spray drying the resulting suspension to remove the organic solvent, said solid dispersant having an enhanced dissolution and stability of cefuroxime axetil and being useful for the preparation of a pharmaceutical composition for oral administration. Tablet was formulated with this cefuroxime axetil solid dispersant, disintegrants and other ingredients. It disintegrated and dissolved easily and dynamically in dissolution medium, so showed a good dissolution profile.

• 대한의생명과학회지
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• 제11권3호
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• pp.389-396
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• 2005

Resent studies have reported increased isolation of extended-spectrum $\beta-lactamase$ (ESBL) producing strains at several hospital in Korea. We studied to investigate the isolation rates of ESBL strains from clinical isolates of Klebsiella pneumoniae and to characterize differences in types using analyses of genotyping and antibiotic susceptibility test. Antibiotic susceptibility test with confirmation of ESBL by double disk synergy test was performed on the 54 ESBL strains of Klebsiella pneumoniae from a hospital in Busan. Transfer of resistant gene in ESBL strains resistant to 3rd generated antibiotics was confirmed by transconjugation test using E. coli $RG176^{nal(r)}$. blaTEM, blaSHV, blaCTX-M genes were detected by PCR. ESBL producing strains had 100% of resistant rate to ampicillin, azteronam, cefazolin, cefepime and ceftriaxone ($\beta-lactam$ antibiotics). Forty strains of bla TEM$(74\%)$, 41 strains of bla SHV $(76\%)$, 23 strains of bla CTX-M $(43\%)$ were found, respectively. The strains had one or more genes. They had high resistant rates to $\beta-lactam$ antibiotics including cephalosporin. The resistant rates of strains with multiple resistant genes were higher than those of strains with single resistant gene.

• 한국동물위생학회지
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• 제20권3호
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• pp.261-279
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• 1997

The study for a effect of monitoring on bovine mastitis was conduced for improvement of raw milk from Jan. to Dec. in 1996. Sampling the milk of 367 cows(1, 406 quarters) from 5 herds in Inchon and were carried out California mastitis test(CMT), somatic cell count(SCC), isolation of pathogens and antibiotic sensitivity tests. The results were summarized as follows, 1. The number of bovine mastitis was 177 cows(48.2%) and 371 quarters(26.4%) : clinical mastitis : 25 cows(6.8%), 32 quarters(2.3%) and subclinicsl mastitis : 152 cows(41.4% ), 339 quarters(24.1%). Incidence rate of mastitis by season were Summer 52.0%, Fall and Winter 48% and Spring 41%. Incidence rate of mastitis by quarters were Summer 30%, Fall 28%, Winter 25% and Spring 21%, respectively. 2. In the distribution of CMT degree by quarter, CMT positive(CMT$\pm$) of 1, 406 quarters milk were 50.1% (704 quarters). The ratio of CMT positivity by quarter were left front quarter 55.8%, right front quarter 48.9%, right hind quarter 48.6% and left hind quarter 47% The ratio of CMT positivity by season were Summer 54.1%, Fall 49.7%, Spring 48.5% and Winter 48% 3. The highest mean SCC by season among 5 herds was "A" herd. Mean SCC (cell/ml) of A herd were Summer 2, 032, 000cells/ml, Fall 1, 109, 000cells/ml, Winter 782, 000cells/ml and Spring 577, 000cells/ml. The lowest mean SCC by season among 5 herds was "E" herds. Mean SCC of E herd were Summer 1, 064, 000cells/ml, Spring 795, 000cells/m1, Fall 429, 000cells/ml and Winter 400, 000cells/ml. Mean SCC of the other herds by season were little difference. 4. The milk samples of "A" herd were collected from 10 cows. In 3 seasons, mean SCC of No. 2 and 3 cows were than 1, 000, 000cells/ml. In 1 season, mean SCC of No. 6, 7 and 8 cows were than 1, 000, 000cells/ml. The more than mean SCC 1, 000, 000cells/ml of cows by season were distributed Summer 4 cows, Winter 3 cows, Spring and Fall 1 cow respectively. The milk samples of "B" herd were collected from 14 cows. In 3 seasons, mean SCC of No. 1 cow was more than 1, 000, 000cells/ml. In 2 seasons, mean SCC of No. 5, 9 and 14 cows were more than 1, 000, 000cells/ml. In 1 season, No. 3, 6 and 7 cows were more than 1, 000, 000cells/ml. The more than mean SCC 1, 000, 000cells/ml of cows by season were distributed Fall and Winter 4 cows respectively, Summer 3 cows and Spring 1 cow. The milk samples of "C" herd were collected from 18 cows. In 2 seasons, mean SCC of No. 16 cow was more than 1, 000, 000cells/ml. In 1 season, mean SCC of No. 1, 2, 6, 7, 13, 15 and 18 cows were more than 1, 000, 000cells/ml respectively. The more than mean SCC 1, 000, 000cells/ml of cows by season were distributed Summer 5 cows, Fall 3 cows, Spring 2 cows and Winter 1 COW. The milk sampes of "D" herd were collected 24 cows. In 3 season, mean SCC of No. 14 cow was more than 1, 000, 000cells/ml. In 2 seasons, mean SCC of No. 14 and 18 cows were more than 1, 000, 000cells/ml. In 1 season, mean SCC of No. 1, 2, 3, 8, 12, 17, 19, 20 and 21 cows were more than 1, 000, 000cells/ml. The more than mean SCC 1, 000, 000cells/ml of cows were distributed Fall 15 cows, Spring and Winter 4 cows respectively and Summer 3 cows. The milk samples of "E" herd were collected from 27 cows. In 2 seasons, mean SCC of No. 6, 7 and 21 cows were more than 1, 000, 000cells/ml. In 1 season, mean SCC of No. 2, 4, 7, 11, 14, 16 and 23 cows were more than 1, 000, 000cells/ml. The more than mean SCC 1, 000, 000cells/ml of cows were distributed Spring and Fall 5 cows respectively, Summer and Winter 2 cows, respectively. 5. The rate of isolated pathogenic microorganisms from bovine mastitis were summarized as follows : Staphylococcus sp 168 strains(45.8%), Streptococcus sp 82 strains(22.3%), Gram(-) sp 45 strains(12.3%), Gram(＋) sp 51 strains and the other sp 21 strains(5.7%). 6. The highest of antibiotic sensitivity test of each microorganism was summarized as follows : Staphyolcoccus sp - cephalosporin 76%, gentamicin 55%, Streptococcus sp - ampicillin 61%, cephalosporin 63%, Gram(-) sp - gentamicin 58%, Gram(＋) sp - cephalosporin 63%, The other sp - cephalosporin 90%. Microorganisms showed the highest sensitivity(68%) to cephalospsorin. Microorganisms showed the highest sensitivity(68%) to cephalospsorin.

• Pediatric Infection and Vaccine
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• 제19권3호
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• pp.141-148
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• 2012

목 적 : 뇌실-복강 단락 수술은 수두증이 있는 소아 환자에서 중요한 치료 방법 중 하나이다. 뇌실-복강 단락에서 단락 감염은 중요한 합병증이며 수술의 예후를 결정하는 중요한 요인이다. 이 연구는 소아 환자에서의 뇌실-복강 단락 감염의 역학적 특성과 임상 증상, 치료와 예후를 파악하고 진단 및 치료에 도움이 되고자 하였다. 방 법 : 1995년 4월부터 2010년 6월까지 뇌실-복강 단락 수술을 시행 받은 18세 이하의 환자를 대상으로 하였으며 후향적으로 의무 기록을 분석하였다. 결 과 : 총 190명(여자 82명, 남자 107명)의 환자에서 327건의 뇌실-복강 단락 수술을 시행하였다. 중위 연령은 2.4세이며(0.02-17.9세) 뇌실-복강 단락 수술의 가장 흔한 원인은 악성 뇌종양이었다. 수술 1건 당 감염률은 6.7% (22/327건), 환자 1명 당 감염률은 9.5% (18/190명)이며 100건의 수술-년 당 감염은 0.45건 이었다. 가장 흔한 원인 균은 coagulase-negative staphylococcus (7건) 이며 methicillin resistant Staphylococcus aureus에 의한 감염은 1건 이었다. 10건의 감염에서 vancomycin과 beta-lactam antibiotics (cephalosporin or carbapenem)의 복합 정주 치료를 시행하였으며 7건의 감염에서 vancomycin 단독 정주 치료를 시행하였다. 치료 기간의 중앙값은 26일(7-58일)이었으며 수술적 치료는 18건에서 시행하였다(18/22건, 81.8%). 결 론 : 본 연구는 단일 기관에서 15년 동안의 뇌실-복강 단락 감염의 역학을 요약한 연구로 소아 환자에서의 뇌실-복강 단락 감염의 역학적 정보는 적절한 치료를 시행하는데 큰 도움이 될 것이다. 향후 단락 감염의 발생과 관련한 위험 인자에 대한 추가적인 연구가 필요할 것으로 사료된다.

• 약학회지
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• 제50권1호
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• pp.40-46
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• 2006

Square wave voltammetric (SWV) and cyclic voltammetric (CV) behaviors of cefotaxime sodium and ceftriaxone sodium have been investigated in the potential range between -0.10 V and -1.30 V using the phosphate buffers of various pH values ($2.00{\sim}9.10$). Two main peaks observed were irreversible and protons were involved in their electrochemical reductions. The first peaks of these cephalosporin antibiotics are due to the reduction of the azomethine double bond in the methoxyimino group of the side chain at position 7. The second peaks of cefotaxime sodium and ceftriaxone sodium are related to the reductions of the ${\Delta}^3$ double bond and the dioxo moiety of the side chain at position 3, respectively. The calibration curve of cefotaxime sodium in the concentration range between $1.0{\times}10^{-7}M$ and $1.0{\times}10^{-5}M$ yielded the linearity with the correlation coefficient of 0.9998 when the first peak of the antibiotic in a phosphate buffer of pH 3.02 was measured at the conditions of frequency of 120 Hz and pulse height of 50 mV by SWV. The present fast, simple and accurate SWV assay method was applied to determine cefotaxime sodium in the commercial antibiotic powder of injection.

• 동의생리병리학회지
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• 제26권6호
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• pp.886-893
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• 2012

Methicillin-Resistant Staphylococcus aureus (MRSA) is a cephalosporin and beta-lactam antibiotic-resistant strain. In most cases, MRSA is spread from infected patients and infection rates are growing increasingly. Furthermore, increased resistance to antibiotics is causing serious problems in the world. Staphylococcus aureus is responsible for both nosocomial and community-based infections that range from relatively minor skin and soft tissue infections to life-threatening systemic infections. Therefore, there is a need to develop alternative antimicrobial drugs for the treatment of infectious diseases. In this study, we investigated antimicrobial activity of oriental medicine prescription against MRSA. The minimum inhibitory concentration (MIC) of Sohamhyung-tang water extract against S. aureus strains ranged from 500 to 2,000 ${\mu}g/mL$, so we have it confirmed that a strong antibacterial effect. Also, the combinations of Sohamhyung-tang water extract and conventional antibiotics exhibited improved inhibition of MRSA with synergy effect. We suggest that Sohamhyung-tang water extract against MRSA have antibacterial activity, it has potential as alternatives to antibiotic agent. We suggest that the Sohamhyung-tang water extract lead the treatment of bacterial infection to solve the resistance and remaining side-effect problems that are the major weak points of traditional antibiotics.

• 약학회지
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• 제52권2호
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• pp.101-110
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• 2008

Total Knee Replacement (TKR) surgery is one of the invasive procedures for patients with late-stage knee joint disorders. In the present study, economic efficiency was compared between uses of the 2nd and 3rd generation cephalosporins for the prophylaxis before and after the surgery using frequency analysis in terms of various factors such as medication costs, the number of days of antibiotic use and hospitalization due to TKR surgery. The results showed that the 3rd generation cephalosporins did not reduce the infection rate and total medication costs, but rather raised antibiotic cost in comparison with the 2nd ones. A frequent use of the 3rd ones is closely related to emergence of resistant bacterial strains. Therefore, we suggest that unnecessary prescriptions for the broad spectrum antibiotics should be avoided.

• Tuberculosis and Respiratory Diseases
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• 제52권3호
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• pp.207-218
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• 2002

배 경 : 중환자실은 병원 감염의 높은 발생률, 항생제 사용의 증가, 내성세균의 출현, 더욱 강력한 항생제의 사용으로 인해 감염증 치료 및 관리가 어렵다. 이에 중환자실 환자들의 감염증의 실태와 분리세균들의 항생제 감수성 동향에 대해서 기존의 여러 연구가 시행 된 바있다. 본 연구에서는 1995년 새로 개원하여 중환자실 시설에 병원 감염균이 없는, 한양대학교부속 구리병원의 중환자실 환자에서 중환자실 원내획득 폐렴 3 대균주로 알려져 있는 Pseudomonas aeruginosa, MRSA, A cinetobacter species를 선택하여 항생제 감수성 동향을 관찰하고, 주요 균주의 감염증에서 합리적인 항생제 요법에 도움을 주고자 하였다. 방 법 : 중환자에서 흔히 나타나는 중환자실 원내획득 폐렴의 3대 균주 (S. aureus, Pseudomonas aeruginosa, A cinetobacter species) 를 선택하여, 1995년 한양대학교 구리병원 개원이후 2000년 까지 중환자실에서 시행한 배양검사 상 흔히 사용하는 항생제의 개원 후 6년간의 연도별 내성율을 조사 하였다. 결 과 : S.aureus의 methicillin 내성율은 각각 1995년 15%, 1996년 21%, 1997년 20%, 1998년 23%, 1999년 22%, 2000년 55% 였다. Pseudomonas aeruginosa의 3세대 cephalosporin 내성율은 각각 1995년 50%, 1996년 50%, 1997년 78%, 1998년 40%, 1999년 77%,2000년 39%였다 lmipenam 내성율은 각각 1995년 0%, 1996년 27%, 1997년 65%, 1998년 12%, 1999년 16%, 2000년 12%였다. Ciprofloxacin 내성율은 각각 1996년 0%, 1997년 56%, 1998년 36%, 1999년 57%, 2000년 58%였다. Tobramycin 내성율은 각각 1995년 7%, 1996년 10%, 1997년 50%, 1998년 4%, 1999년 32, 2000년 15%였다. Gentamicin 내성율은 각각 1995년 14%, 1996년 36%, 1997년 67%, 1998년 36%, 1999년 65%,2000년 12%였다 Amikacin 내성율은 각각 1995년 14%, 1996년 30%, 1997년 61%, 1998년 16%, 1999년 39%,2000년 18%였다. Acinetobacter spp.의 3세대 cephalosporin 내성율은 각각 1996년 92%, 1997년 89%, 1998년 88%, 1999년 84%, 2000년 77%였다. imipenam 내성율은 각각 1996년 50%, 1997년 48%, 1998년 45%, 1999년 49%, 2000년 50%였다. Ciprofloxacin 내성율은 각각 1996년 0%, 1997년 48%, 1998년 33%, 1999년 27%, 2000년 71%였다. Tobramycin 내성율은 각각 1995년 67%, 1996년 100%, 1997년 93%, 1998년 95%, 1999년 89%, 2000년 77%였다. Gentamicin 내성율은 각각 1995년 67%, 1996년 100%, 1997년 89%, 1998년 95%, 1999년 87%, 2000년 83%였다. Amikacin 내성율은 각각 1995년 33%, 1996년 83%, 1997년 82%, 1998년 88%, 1999년 75%, 2000년 69% 였다. 결 론 : 개원 후 6 년간 S.aureus의 methicillin 내성율, Pseudomonas aeruginosa의 quinolone 내성율, A cinetobacter spp의 quinolone 내성율의 급격한 증가가 관찰되었다. 이후 이들 항생제들에 대한 사용시 주의가 필요할 것으로 생각된다. 또한, 이러한 결과는 새로 개원하는 병원 중환자실에서 감염증 환자의 배양검사 결과 전에 항생제 선택에 도움을 줄 수 있을 것으로 사료된다.