Tet 42, a novel tetracycline resistance determinant from deep subsurface bacteria, was characterized and found to have a 30% sequence similarity to TetA(Z). The protein is a putative efflux pump that shares characteristics with previously characterized pumps, including a divergently transcribed TetR repressor, a conserved GxxSDRxGRR motif, and transmembrane domains.
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http://dx.doi.org/10.1128/AAC.00640-08 | DOI Listing |
Gut Pathog
December 2024
Department of Gerontology, Sir Run Run Hospital, Nanjing Medical University, Nanjing, 211166, China.
Background: Sepsis represents the most prevalent infectious complication and the primary cause of mortality in myeloproliferative neoplasms (MPN). The risk of sepsis and the difficulty of treatment are significantly increased in MPN patients due to the need for immunomodulators and antibiotics.
Case Presentation: On June 9, 2023, a 69-year-old male was admitted to the hospital.
Curr Issues Mol Biol
December 2024
Department of Physiology, University of Louisville School of Medicine, Louisville, KY 40202, USA.
Morning-time heart attacks are associated with an ablation in the sleep-time dip in blood pressure, the mechanism of which is unknown. The epigenetic changes are the hallmark of sleep and circadian clock disruption and homocystinuria (HHcy). The homocystinuria causes ablation in the dip in blood pressure during sleep.
View Article and Find Full Text PDFFront Microbiol
December 2024
National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China.
There is a major public health threat posed by antibiotic resistance around the world. Tigecycline overcomes the resistance mechanisms of traditional tetracyclines and is often seen as the final resort in combating infections caused by bacteria resistant to multiple drugs. However, the introduction of new mobile tet(X) tetracycline destructases is leading to a notable rise in tigecycline resistance.
View Article and Find Full Text PDFAnim Microbiome
December 2024
Department of Aquatic Life Medicine, Pukyong National University, Busan, Republic of Korea.
Background: In aquaculture, the secretions of cultured organisms contribute to the development of aquatic antibiotic resistance. However, the antibiotic-induced changes in fish feces remain poorly understood. This study aimed to assess the short-term dynamics of fecal microbiome and antibiotic resistance in juvenile rainbow trout (Oncorhynchus mykiss) upon antibiotic treatment and withdrawal period.
View Article and Find Full Text PDFPharmacol Res
December 2024
GMU-GIBH Joint School of Life Sciences, Department of Cardiology, Guangzhou Institute of Cardiovascular Disease, Guangdong Key Laboratory of Vascular Diseases, the Second Affiliated Hospital, The Guangdong-Hong Kong-Macao Joint Laboratory for Cell Fate Regulation and Diseases, State Key Laboratory of Respiratory Disease, The Sixth School of Clinical Medicine, the Affiliated Qingyuan Hospital (Qingyuan People's Hospital), Guangzhou Medical University, Guangzhou, Guangdong, PR China. Electronic address:
The complex mechanisms underlying the development of cardiovascular diseases remain not fully elucidated. Epigenetics, which modulates gene expression without DNA sequence changes, is shedding light on these mechanisms and their heritable effects. This review focus on epigenetic regulation in cardiovascular aging and diseases, detailing specific epigenetic enzymes such as DNA methyltransferases (DNMTs), histone acetyltransferases (HATs), and histone deacetylases (HDACs), which serve as writers or erasers that modify the epigenetic landscape.
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