基里丁醇化合物对阳性细菌表现出抗菌作用
Juan Canchola1, Gracious Yoofi Boafo Donkor2, Patrick Ofori Tawiah2
1Department of Chemistry, Illinois State University, Normal, IL 61761, USA.
Antibiotics (Basel, Switzerland)
|September 28, 2024
概括
新型基里丁醇衍生物对抗耐药黄金葡萄球菌菌株表现出强大的抗菌活性. 这些化合物破坏细菌膜,为打击抗菌素耐药性提供了一个有希望的新途径.
科学领域:
- 自然产品化学 自然产品化学
- 药用化学 医学化学
- 微生物学 微生物学
背景情况:
- 像金黄色葡萄球菌 (Staphylococcus aureus) 这样的病原体的抗生素耐药性是全球健康的关键威胁.
- 新型抗生素的发现正在下降,需要新的治疗策略.
- 自然产品为抗微生物药物发现提供了多样化的化学结构和机制.
研究的目的:
- 合成和生物学描述新型的阿内衍生物.
- 评估这些衍生物的抗菌活性,以对抗包括MRSA在内的各种金黄色葡萄球菌菌株.
- 为了研究最强效化合物的作用机制.
主要方法:
- 用Sonogashira交叉合作为关键步骤合成了五种新型阿内衍生物.
- 生物特征包括对哺乳动物细胞的细胞毒性测定.
- 确定最小抑制度 (MIC) 和评估对生物膜形成细胞的活性.
主要成果:
- 合成的衍生物对哺乳动物细胞具有较低的细胞毒性.
- 观察到强烈的抗菌活性对多种金黄色葡萄球菌菌株,包括甲素耐药金黄色葡萄球菌 (MRSA) 和USA300LAC.
- 化合物JC-01-074在低度 (MIC: 16μg/mL) 时表现出杀菌活性,并破坏了细菌膜.
结论:
- 从天然产品中提取的基二醇是新型抗菌剂的有希望的候选者.
- 这些化合物有效地向活跃生长和生物膜形成的金黄色葡萄球菌细胞.
- 观察到的膜破坏表明这些新型抗生素的作用机制与膜相关.
相关概念视频
Hand hygiene
3.1K
Asepsis is the practice of preventing or breaking the chain of infection. The nurse employs aseptic techniques to prevent the spread of microorganisms and reduce the risk of diseases. Hand hygiene is the cornerstone of aseptic techniques and is classified into medical and surgical asepsis. Medical asepsis includes hand hygiene and the use of gloves. Surgical asepsis, or the sterile technique, refers to practices that render and keep objects and areas free of microorganisms.
Hand washing...
Hand washing...
3.1K
Antimicrobial Proteins
945
Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
945
Combined Effects of Drugs: Synergism
3.8K
Synergism is a useful mechanism where combining two or more drugs is more effective than each constituent used alone. Such combinations are also called supra-additive interactions. The drugs collectively enhance the final therapeutic effect by acting on different targets. Another advantage is that the low dose of each constituent drug is sufficient to achieve the desired effect. This helps reduce the duration of therapy and lower the adverse effects of these drugs.
Such synergistic combinations...
Such synergistic combinations...
3.8K
Physical Properties of Alcohols and Phenols
14.1K
Alcohols are organic compounds in which a hydroxy group is attached to a saturated carbon. Phenols are a class of alcohols containing a hydroxy group attached to an aromatic ring. The physical properties of the alcohols and phenols are influenced by hydrogen bonding due to the oxygen–hydrogen dipole in the hydroxy functional group and dispersion forces between alkyl or aryl regions of alcohol and phenol molecules.
Alcohols possess a higher boiling point than aliphatic hydrocarbons of...
Alcohols possess a higher boiling point than aliphatic hydrocarbons of...
14.1K
Aryldiazonium Salts to Azo Dyes: Diazo Coupling
2.9K
The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the...
2.9K
Basicity of Heterocyclic Aromatic Amines
5.7K
Heterocyclic amines, where the N atom is a part of an alicyclic system, are similar in basicity to alkylamines. Interestingly, the heterocyclic amine having a nitrogen atom as part of an aromatic ring has much less basicity than its corresponding alicyclic counterpart. For this reason, as presented in Figure 1, piperidine (pKb = 2.8) is significantly more basic than pyridine (pKb = 8.8).
5.7K


