Article(id=1236689045053567205, tenantId=1146029695717560320, journalId=1235980733773295621, issueId=1236689043514257626, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=null, receivedDateStr=null, revisedDate=null, revisedDateStr=null, acceptedDate=1665331200000, acceptedDateStr=2022-10-10, onlineDate=1772779244912, onlineDateStr=2026-03-06, pubDate=1680105600000, pubDateStr=2023-03-30, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1772779244912, onlineIssueDateStr=2026-03-06, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1772779244912, creator=13701087609, updateTime=1772779244912, updator=13701087609, issue=Issue{id=1236689043514257626, tenantId=1146029695717560320, journalId=1235980733773295621, year='2023', volume='32', issue='6', pageStart='553', pageEnd='656', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1772779244545, creator=13701087609, updateTime=1772779562627, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1236690377705575144, tenantId=1146029695717560320, journalId=1235980733773295621, issueId=1236689043514257626, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1236690377705575145, tenantId=1146029695717560320, journalId=1235980733773295621, issueId=1236689043514257626, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=625, endPage=628, ext={EN=ArticleExt(id=1236689045238116591, articleId=1236689045053567205, tenantId=1146029695717560320, journalId=1235980733773295621, language=EN, title=Antibacterial effect of acetylkitasamycin dry suspension on Mycoplasma pneumoniae in vitro, columnId=null, journalTitle=Chinese Journal of New Drugs, columnName=null, runingTitle=null, highlight=null, articleAbstract=
Objective:

To investigate the antibacterial effect of acetylkitasamycin dry suspension on Mycoplasma pneumoniae (MP) in vitro.

Methods:

51 clinical isolates and 2 standard strains of MP from patients with respiratory tract infection stored in our laboratory from 2016 to 2019 were randomly selected for the research. Taking azithromycin and erythromycin as control drugs, the minimum inhibitory concentration (MIC) of acetylkitasamycin dry suspension against MP was determined using broth microdilution method.

Results:

Of all the 51 clinical isolates, there were 43 drug-resistant strains that contained the point mutations A2063G in V region of 23S rRNA domain, and there were 8 susceptible strains which had no mutations related to drug resistance. The MIC values of the acetyljithamycin dry suspension were 0.125 mg·L-1 for the standard MP strains FH and M129; for the clinically resistant MP strains, the MIC was 8~32 mg·L-1, the MIC50 was 16 mg·L-1, and the MIC90 was 32 mg·L-1; for clinically sensitive MP strains, the MIC was 0.063~0.125 mg·L-1, and both MIC50 and MIC90 were 0.125 mg·L-1. Erythromycin had a MIC range of 256~1 024 mg·L-1 for clinically resistant MP strains, the MIC50 was 512 mg·L-1, and the MIC90 was 1 024 mg·L-1; azithromycin had a MIC range of 64~512 mg·L-1 for clinically resistant MP strains, the MIC50 was 256 mg·L-1, and the MIC90 was 512 mg·L-1. The MIC values of erythromycin and azithromycin for clinically sensitive MP strains were <0.5 mg·L-1.

Conclusion:

MP showed different degrees of resistance to macrolide antibiotics. Acetylkitasamycin dry suspension had good bacteriostatic activity against sensitive MP strains in vitro, and the MIC value against resistant MP strains was low, and the clinical effect on MP infection need to be further studied.

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目的:

探讨乙酰吉他霉素干混悬剂对肺炎支原体(MP)的体外抗菌作用。

方法:

选择2016—2019年本实验室保存的呼吸系统感染患者的MP临床分离株51株,以阿奇霉素、红霉素对照药物,采用微量倍比稀释法测定乙酰吉他霉素干混悬剂对MP的体外最低抑菌浓度(MIC)。

结果:

51株临床分离株中,43例耐药株,含23SrRNA 2063位点突变, 8例敏感株,无耐药相关位点突变。微量倍比稀释法的结果显示:乙酰吉他霉素干混悬剂对MP标准株FH和M129的MIC值均为0.125 mg·L-1,对MP临床耐药株的MIC值为8~32 mg·L-1,MIC50为16 mg·L-1,MIC90为32 mg·L-1;对MP临床敏感株的MIC值为0.063~0.125 mg·L-1,MIC50和MIC90均为0.125 mg·L-1。红霉素对MP临床耐药株MIC范围为256~1 024 mg·L-1,MIC50和MIC90分别为512和1 024 mg·L-1;阿奇霉素对MP临床耐药株MIC范围为64~512 mg·L-1,MIC50和MIC90分别为256和512 mg·L-1;红霉素和阿奇霉素对MP临床敏感株的MIC值均<0.5 mg·L-1

结论:

肺炎支原体对大环内酯类抗生素呈不同程度的耐药,乙酰吉他霉素干混悬剂体外对MP敏感株有较好的抑菌活性,对MP耐药株的MIC值水平较低,临床上对肺炎支原体感染的作用需要进一步研究。

, correspAuthors=null, authorNote=null, correspAuthorsNote=
辛德莉,女,主任医师,教授,研究方向:呼吸系统疾病,病原生物学,中西医结合医学。E-mail:
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史大伟,男,主治医师,研究方向:儿童呼吸系统疾病。E-mail:

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史大伟,男,主治医师,研究方向:儿童呼吸系统疾病。E-mail:

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乙酰吉他霉素干混悬剂对肺炎支原体的体外抗菌作用
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史大伟 , 袁青 , 涂鹏 , 田秀君 , 窦海伟 , 辛德莉
中国新药杂志 | 实验研究 2023,32(6): 625-628
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中国新药杂志 | 实验研究 2023, 32(6): 625-628
乙酰吉他霉素干混悬剂对肺炎支原体的体外抗菌作用
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史大伟 , 袁青, 涂鹏, 田秀君, 窦海伟, 辛德莉
作者信息
  • 首都医科大学附属北京友谊医院,北京热带医学研究所,热带病防治研究北京市重点实验室,北京 100050
  • 史大伟,男,主治医师,研究方向:儿童呼吸系统疾病。E-mail:

通讯作者:

辛德莉,女,主任医师,教授,研究方向:呼吸系统疾病,病原生物学,中西医结合医学。E-mail:
Antibacterial effect of acetylkitasamycin dry suspension on Mycoplasma pneumoniae in vitro
Da-wei SHI , Qing YUAN, Peng TU, Xiu-jun TIAN, Hai-wei DOU, De-li XIN
Affiliations
  • Beijing Friendship Hospital, Capital Medical University, Beijing Tropical Medicine Research Institute, Beijing Key Laboratory of Tropical Disease Control Research, Beijing 100050, China
出版时间: 2023-03-30
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目的:

探讨乙酰吉他霉素干混悬剂对肺炎支原体(MP)的体外抗菌作用。

方法:

选择2016—2019年本实验室保存的呼吸系统感染患者的MP临床分离株51株,以阿奇霉素、红霉素对照药物,采用微量倍比稀释法测定乙酰吉他霉素干混悬剂对MP的体外最低抑菌浓度(MIC)。

结果:

51株临床分离株中,43例耐药株,含23SrRNA 2063位点突变, 8例敏感株,无耐药相关位点突变。微量倍比稀释法的结果显示:乙酰吉他霉素干混悬剂对MP标准株FH和M129的MIC值均为0.125 mg·L-1,对MP临床耐药株的MIC值为8~32 mg·L-1,MIC50为16 mg·L-1,MIC90为32 mg·L-1;对MP临床敏感株的MIC值为0.063~0.125 mg·L-1,MIC50和MIC90均为0.125 mg·L-1。红霉素对MP临床耐药株MIC范围为256~1 024 mg·L-1,MIC50和MIC90分别为512和1 024 mg·L-1;阿奇霉素对MP临床耐药株MIC范围为64~512 mg·L-1,MIC50和MIC90分别为256和512 mg·L-1;红霉素和阿奇霉素对MP临床敏感株的MIC值均<0.5 mg·L-1

结论:

肺炎支原体对大环内酯类抗生素呈不同程度的耐药,乙酰吉他霉素干混悬剂体外对MP敏感株有较好的抑菌活性,对MP耐药株的MIC值水平较低,临床上对肺炎支原体感染的作用需要进一步研究。

乙酰吉他霉素干混悬剂  /  肺炎支原体  /  抗菌  /  最低抑菌浓度  /  耐药
Objective:

To investigate the antibacterial effect of acetylkitasamycin dry suspension on Mycoplasma pneumoniae (MP) in vitro.

Methods:

51 clinical isolates and 2 standard strains of MP from patients with respiratory tract infection stored in our laboratory from 2016 to 2019 were randomly selected for the research. Taking azithromycin and erythromycin as control drugs, the minimum inhibitory concentration (MIC) of acetylkitasamycin dry suspension against MP was determined using broth microdilution method.

Results:

Of all the 51 clinical isolates, there were 43 drug-resistant strains that contained the point mutations A2063G in V region of 23S rRNA domain, and there were 8 susceptible strains which had no mutations related to drug resistance. The MIC values of the acetyljithamycin dry suspension were 0.125 mg·L-1 for the standard MP strains FH and M129; for the clinically resistant MP strains, the MIC was 8~32 mg·L-1, the MIC50 was 16 mg·L-1, and the MIC90 was 32 mg·L-1; for clinically sensitive MP strains, the MIC was 0.063~0.125 mg·L-1, and both MIC50 and MIC90 were 0.125 mg·L-1. Erythromycin had a MIC range of 256~1 024 mg·L-1 for clinically resistant MP strains, the MIC50 was 512 mg·L-1, and the MIC90 was 1 024 mg·L-1; azithromycin had a MIC range of 64~512 mg·L-1 for clinically resistant MP strains, the MIC50 was 256 mg·L-1, and the MIC90 was 512 mg·L-1. The MIC values of erythromycin and azithromycin for clinically sensitive MP strains were <0.5 mg·L-1.

Conclusion:

MP showed different degrees of resistance to macrolide antibiotics. Acetylkitasamycin dry suspension had good bacteriostatic activity against sensitive MP strains in vitro, and the MIC value against resistant MP strains was low, and the clinical effect on MP infection need to be further studied.

acetylkitasamycin dry suspension  /  Mycoplasma pneumoniae  /  antibacterial  /  minimum inhibitory concentration  /  resistance
史大伟, 袁青, 涂鹏, 田秀君, 窦海伟, 辛德莉. 乙酰吉他霉素干混悬剂对肺炎支原体的体外抗菌作用. 中国新药杂志, 2023 , 32 (6) : 625 -628 .
Da-wei SHI, Qing YUAN, Peng TU, Xiu-jun TIAN, Hai-wei DOU, De-li XIN. Antibacterial effect of acetylkitasamycin dry suspension on Mycoplasma pneumoniae in vitro[J]. Chinese Journal of New Drugs, 2023 , 32 (6) : 625 -628 .
  • 国家自然科学基金资助项目(81473214)
2023年第32卷第6期
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  • 首发时间:2026-03-06
  • 出版时间:2023-03-30
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  • 录用日期:2022-10-10
基金
国家自然科学基金资助项目(81473214)
作者信息
    首都医科大学附属北京友谊医院,北京热带医学研究所,热带病防治研究北京市重点实验室,北京 100050

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辛德莉,女,主任医师,教授,研究方向:呼吸系统疾病,病原生物学,中西医结合医学。E-mail:
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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