激光杂志
激光雜誌
격광잡지
LASER JOURNAL
2014年
9期
122-124
,共3页
成琼辉%陈年%欧东%刘渤%伍津津%雷霞
成瓊輝%陳年%歐東%劉渤%伍津津%雷霞
성경휘%진년%구동%류발%오진진%뢰하
5-氨基酮戊酸散%铜绿假单胞菌%光动力治疗%绿脓毒素
5-氨基酮戊痠散%銅綠假單胞菌%光動力治療%綠膿毒素
5-안기동무산산%동록가단포균%광동력치료%록농독소
Photodynamic therapy%5-aminolevulinic acid%Pseudomonas aeruginosa
目的:研究氨基酮戊酸(5-aminolevulinic acid,5-ALA)光动力疗法(photodynamic therapy)(ALA-PDT)对铜绿假单胞菌的杀灭作用。方法:以铜绿假单胞菌标准菌株ATCC27853为研究对象,采用ALA为光敏剂,用630nm的红光为光源,按不同的浓度剂量组合分为6组,用细菌涂板法观察细菌浓度,同时利用氯仿萃取法测定照射后48小时的绿脓毒素;结果:仅有光敏剂实验组与对照组(无ALA,无红光)细菌量相比,对铜绿假单胞菌无杀灭作用,仅有红光照射(90J/cm2×40分钟)组有轻度杀菌作用,抑制率为18.9%,而ALA与红光组合的三个ALA-PDT实验组对铜绿假单胞菌均有不同程度的杀菌作用(10nM ALA+90J/cm2红光×20分钟组的抑制率为82.0%,20nM ALA+90J/cm2红光×20分钟组的抑制率为96.4%,而20nM ALA+90J/cm2红光×40分钟组抑制率为100%),ALA-PDT对铜绿假单胞菌的杀灭作用随ALA浓度增高和红光能量增高作用加强;绿脓毒素的量在光动力治疗组也有明显下降,随剂量增加明显下降。结论:ALA-PDT对体外培养的铜绿假单胞菌ATCC27853具有明确的杀灭作用,能减少绿脓毒素分泌,且与剂量相关。
目的:研究氨基酮戊痠(5-aminolevulinic acid,5-ALA)光動力療法(photodynamic therapy)(ALA-PDT)對銅綠假單胞菌的殺滅作用。方法:以銅綠假單胞菌標準菌株ATCC27853為研究對象,採用ALA為光敏劑,用630nm的紅光為光源,按不同的濃度劑量組閤分為6組,用細菌塗闆法觀察細菌濃度,同時利用氯倣萃取法測定照射後48小時的綠膿毒素;結果:僅有光敏劑實驗組與對照組(無ALA,無紅光)細菌量相比,對銅綠假單胞菌無殺滅作用,僅有紅光照射(90J/cm2×40分鐘)組有輕度殺菌作用,抑製率為18.9%,而ALA與紅光組閤的三箇ALA-PDT實驗組對銅綠假單胞菌均有不同程度的殺菌作用(10nM ALA+90J/cm2紅光×20分鐘組的抑製率為82.0%,20nM ALA+90J/cm2紅光×20分鐘組的抑製率為96.4%,而20nM ALA+90J/cm2紅光×40分鐘組抑製率為100%),ALA-PDT對銅綠假單胞菌的殺滅作用隨ALA濃度增高和紅光能量增高作用加彊;綠膿毒素的量在光動力治療組也有明顯下降,隨劑量增加明顯下降。結論:ALA-PDT對體外培養的銅綠假單胞菌ATCC27853具有明確的殺滅作用,能減少綠膿毒素分泌,且與劑量相關。
목적:연구안기동무산(5-aminolevulinic acid,5-ALA)광동력요법(photodynamic therapy)(ALA-PDT)대동록가단포균적살멸작용。방법:이동록가단포균표준균주ATCC27853위연구대상,채용ALA위광민제,용630nm적홍광위광원,안불동적농도제량조합분위6조,용세균도판법관찰세균농도,동시이용록방췌취법측정조사후48소시적록농독소;결과:부유광민제실험조여대조조(무ALA,무홍광)세균량상비,대동록가단포균무살멸작용,부유홍광조사(90J/cm2×40분종)조유경도살균작용,억제솔위18.9%,이ALA여홍광조합적삼개ALA-PDT실험조대동록가단포균균유불동정도적살균작용(10nM ALA+90J/cm2홍광×20분종조적억제솔위82.0%,20nM ALA+90J/cm2홍광×20분종조적억제솔위96.4%,이20nM ALA+90J/cm2홍광×40분종조억제솔위100%),ALA-PDT대동록가단포균적살멸작용수ALA농도증고화홍광능량증고작용가강;록농독소적량재광동력치료조야유명현하강,수제량증가명현하강。결론:ALA-PDT대체외배양적동록가단포균ATCC27853구유명학적살멸작용,능감소록농독소분비,차여제량상관。
Objective To investigate the effect of 5-aminolevulinic acid-based photodynamic therapy (ALA-PDT) on pseudomonas aeruginosa planktonic cells in vitro. Medhods: Pseudomonas aeruginosa standard strain ATCC27853 was used in this study. Pseudomonas aeruginosa was divided into 6 groups according to different dose of ALA and 630nm red light. Spread plate method was used to count the bacteria. The chloroform extraction method was used to detect the exotoxin of Pseudomonas aeruginosa. Results:Compared with blank group, the experimental group with only ALA had no effect to Pseudomonas aeruginosa. But, the experimental group with only red light has mild inhibition (18.9%) to Pseudomonas aeruginosa. Pseudomonas aeruginosa was inhibited in three ALA-PDT ex-perimental groups. The inhibition rate is 82.0%in 10nM ALA+90J/cm2 red light ×20 minutes group, 96.4%in 20nM ALA+90J/cm2 red light × 20 minutes group, 100%in 20nM ALA+90J/cm2 red light × 40 minutes. The exotoxin of Pseudomonas aeruginosa was also decreased in ALA-PDT groups.Conclusion:ALA-PDT shows a marked inhibitive effect on Pseudomonas aeruginosa planktonic cells and can reduce the production of exotoxin.