Two new strains of Streptomyces with metabolic potential for biological control of pear black spot disease by Yi-Huang Chen, Jia-Xing Zhang, Yan Min, Yang Liu, Jian-Ming Wang, Lin-Quan Bai, Xiao-Xia Luo

“…The resistance genes of strain TRM 76172 were classified as macrolides, and genomic prediction revealed the biosynthetic pathway of the active compound Candidin. …”
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Genomic epidemiology and evolution of Bordetella pertussis under the vaccination pressure of acellular vaccines in Beijing, China, 2020–2023 by Zhen Li, Fei Xiao, Yue Hou, Bin Jia, Ji Zhuang, Yang Cao, Jianxin Ma, Jianhong Zhao, Zengquan Xu, Zhe Jia, Fang Liu, Lin Pang, Jie Liu

“…Additionally, all 60 isolated strains (100%) presented the A2047G mutation associated with erythromycin resistance, of which ptxP3 accounted for 91.7%. Macrolide-resistant Bordetella pertussis (MRBP) is widespread in China, and the prevalence of ptxP3-MRBP may be increasing. …”
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The pattern of antibiotic utilisation among intensive care unit patients hospitalised in a Gauteng (South African) provincial tertiary hospital: Comparing findings before and durin... by L Spinickum, Z Booth, S Leigh-de Rapper

“…The study found that the most frequently prescribed antibiotics were amoxicillin in combination with clavulanate (pre-pandemic 31.99%; amid-COVID-19 38.43%), followed by ceftriaxone (pre-pandemic 15.44%; amid-COVID-19 14.55%), piperacillin in combination with tazobactam (pre-pandemic 11.40%; amid-COVID-19 8.58%) and azithromycin (pre-pandemic 7.725%; amid-COVID-19 19.78%). Conclusion. The macrolide and penicillin (in combination with a beta-lactamase inhibitor) classes demonstrated an increase in consumption from the pre-pandemic period moving into the COVID-19 pandemic. …”
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Management of Irritable Bowel Syndrome: Novel Approaches to the Pharmacology of Gut Motility by Carmelo Scarpignato, Iva Pelosini

“…Erythromycin and related 14-member macrolide compounds inhibit the binding of motilin to its receptors on GI smooth muscle and, therefore, act as motilin agonists. …”
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Dissemination of clinical Escherichia coli harboring the mcr-1 gene in Pakistan by Sabahat Abdullah, Sabahat Abdullah, Muhammad Ahmad Mushtaq, Kalim Ullah, Brekhna Hassan, Mariya Azam, Mariya Azam, Muhammad Asif Zahoor, Juan Wang, Jianzhen Xu, Mark A. Toleman, Mashkoor Mohsin

“…ResFinder analysis revealed the presence of multiple resistance determinants conferring co-resistance to β-lactams, aminoglycosides, trimethoprim, sulfonamides, tetracycline, quinolones, florfenicol, and macrolides. Hybrid genomic assembly indicated that mcr-1 is carried on IncI2 plasmids. …”
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Effect of drug interactions with apixaban on clinical outcomes in cancer patients with venous thromboembolism by Marte Svalastoga, Trine-Lise Larsen, Trine-Lise Larsen, Jorunn Brekke, Tone Enden, Hege Frøen, Herish Garresori, Eva Marie Jacobsen, Alina Carmen Porojnicu, Anne Hansen Ree, Anne Hansen Ree, Dag Torfoss, Elin Osvik Velle, Hilde Skuterud Wik, Waleed Ghanima, Waleed Ghanima, Per Morten Sandset, Per Morten Sandset, Anders Erik Astrup Dahm, Anders Erik Astrup Dahm

“…There were no major bleedings in 23 patients using aprepitant nor in the 10 patients taking macrolides. We found no association between drugs and recurrent VTE, except that there were no recurrent VTE in 19 patients using bevacizumab.ConclusionsDespite the high number of drugs taken that could potentially interact with apixaban, none were found to clearly influence clinical outcomes, except that fluconazole may increase the risk of CRNMB.…”
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Clarithromycin-Associated Acute Liver Failure Leading to Fatal, Massive Upper Gastrointestinal Hemorrhage from Profound Coagulopathy: Case Report and Systematic Literature Review by Ahmed I. Edhi, Seifeldin Hakim, Christienne Shams, Damanpreet Bedi, Mitual Amin, Mitchell S. Cappell

“…While erythromycin has caused numerous cases of acute liver failure (ALF), clarithromycin, a similar macrolide antibiotic, has caused only six reported cases of ALF. …”
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Whole-genome phylogenetic analysis of Mycobacterium avium complex from clinical respiratory samples by Chew Ka Lip, Joelle Go, Nur Aisyah Binte Abu Bakar, Sophie Octavia, Raymond Tzer Pin Lin, Jeanette W. P. Teo

“…Of the entire cohort, only one isolate was found to have a A2059G 23S rRNA (rrl) gene mutation responsible for macrolide resistance.IMPORTANCEMycobacterium avium complex (MAC) infections are increasingly challenging to manage due to their complex species diversity and varied resistance patterns. …”
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Evaluation of multidrug resistance in the Gram-negative microbiome of cancer patients and the adverse effects of their metabolites on albino rats and epithelial or fibroblasts cell... by Mervat Morsy Abbas Ahmed El-Gendy, Huda Ahmed Alghamdi, Khaled G. Abdel-Wahhab, Nabila S. Hassan, Aya A. M. El-Bondkly, Mohammed Abdel-Wahab, Ayman A. Farghaly, Ahmed Mohamed Ahmed El-Bondkly

“…Esraa 5 strains showed multidrug resistant profile against all antibiotic classes under study including penicillins, cephalosporins, carbapenems, fluoroquinolones, β-lactamase inhibitors combinations, folate synthesis pathway inhibitors, phosphonic, aminoglycosides, polymyxins, tetracyclines, macrolides, and chloramphenicol antibiotics. The adverse effects of oral ingestion of their metabolites were evaluated in albino rats. …”
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Detection of CRISPR‒Cas and type I R–M systems in Klebsiella pneumoniae of human and animal origins and their relationship to antibiotic resistance and virulence by Xue Li, Ling Wang, Jinghuan Lin, Yingjuan Gu, Zhihua Liu, Jing Hu

“…However, a lower prevalence of most antibiotic-resistance genes was found when the CRISPR‒Cas systems were alone, and when type I R-M systems were coexisting, some of the antibiotic resistance gene incidence rates were even lower (quinolones, macrolides, tetracyclines and carbapenems), and some of them were higher instead (aminoglycosides, clindamycins, rifampicin-associated, sulfonamides, methotrexates, beta-lactamases and ultrabroad-spectrum beta-lactamases). …”
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Antibiotic Resistance and Molecular Epidemiological Characteristics of Streptococcus agalactiae Isolated from Pregnant Women in Guangzhou, South China by Zhaomin Cheng, Pinghua Qu, Peifeng Ke, Xiaohan Yang, Qiang Zhou, Kai Lan, Min He, Nannan Cao, Sheng Qin, Xianzhang Huang

“…Seventy-two S. agalactiae strains, collected from pregnant women, were subjected to antibiotic susceptibility tests; then, the screened erythromycin and clindamycin nonsusceptible isolates were used for macrolides and clindamycin resistance genes detection, respectively. …”
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Scrub typhus in pregnancy: A 10-year multicenter study in resource-limited settings in China. by Peilin Zhao, Tieyong Dong, Hongbin Lu, Rui Zhu, Shanshan Zhao, Wuqian Tao, Li Li, Chunmei Liu, Shuwei Pu, Ling Mo, Huanhuan Wang

“…Over 1/3 (n = 90) had a poor fetal outcome, including 40.0% (n = 36) miscarriage, 23.3% (n = 21) fetal death/stillbirth and 36.7% (n = 33) preterm birth. The use of macrolides reduced the risk of a poor fetal outcome, while lower gestational age (GA) at the time of infection, pneumonia, leucopoenia, thrombocytopenia, and use of chloramphenicol were associated with a poor fetal outcome in univariate logistic-regression analysis, but only lower GA at the time of infection and pneumonia were independent risk factors for a poor fetal outcome on multivariate logistic-regression analysis with an odds ratio of 6.6 (95% CI 2.4-17.8, p < 0.001) and 3.1 (95% CI 1.3-7.6, p = 0.011).…”
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The prevalence and antimicrobial resistance of respiratory pathogens isolated from feedlot cattle in Canada by Porjai Rattanapanadda, Porjai Rattanapanadda, Dana Ramsay, Alyssa Butters, Calvin W. Booker, Sherry J. Hannon, Steve Hendrick, Joyce Van Donkersgoed, Brian N. Warr, Sheryl P. Gow, Paul S. Morley

“…There was a significant (p &lt; 0.05) increase in resistance prevalence after arrival for macrolide drugs in M. haemolytica, and for ampicillin, danofloxacin, enrofloxacin, spectinomycin, gamithromycin, tildipirosin, tulathromycin and tetracycline in P. multocida isolates. …”
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Azithromycin to prevent acute lower respiratory infections among Australian and New Zealand First Nations and Timorese children (PETAL trial): study protocol for a multicentre, int... by Anne B Chang, Keith Grimwood, Yuejen Zhao, Gabrielle B McCallum, Catherine A Byrnes, Heidi Smith-Vaughan, Peter S Morris, Christine Connors, Adrian Trenholme, Shirley Lawrence, Joshua Francis, Kobi L Schutz, Mark D Chatfield, Nevio Sarmento, Robyn L. Marsh, Emily R Bowden, Nicholas Fancourt, Adriano Vieira, Kim M Hare, Dennis Bonney, Felicity Marwick, Bronwyn Karvonen, Carolyn Maclennan, Milena Santos Lay, Endang Soares da Silva

“…This randomised controlled trial (RCT) will address this unmet need by trialling a commonly prescribed macrolide antibiotic (azithromycin) for 6–12 months. …”
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Prevalence and characterization of IncQ1α-mediated multi-drug resistance in Proteus mirabilis Isolated from pigs in Kunming, Yunnan, China by Hongmei Liu, Hongmei Liu, Hongmei Liu, Na Xia, Fanan Suksawat, Bundit Tengjaroenkul, Yue Hu, Xiaofeng Zhou, Xiaojiang Li, Cuiqin Huang, Yinli Bao, Qiong Wu, Chunrong Zhang, Sunpetch Angkititrakul, Bin Xiang, Xin Wu

“…Strain NO. 15 carried 33 ARGs, and strain NO. 21 carried 38 ARGs, conferring resistance to tetracyclines, fluoroquinolones, aminoglycosides, sulfonamides, peptides, chloramphenicol, cephalosporins, lincomycins, macrolides, and 2-aminopyrimidines.ConclusionThe repC gene is primarily associated with IncQ1α, with structural genes from other F-type plasmids. …”
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Phenotypic and Genotypic Characterization of Extended Spectrum Beta-Lactamase-Producing Clinical Isolates of Escherichia coli and Klebsiella pneumoniae in Two Kenyan Facilities: A... by Sylvia M. Maveke, Gabriel O. Aboge, Laetitia W. Kanja, Alfred O. Mainga, Naftaly Gachau, Beatrice W. Muchira, Gervason A. Moriasi

“…Furthermore, the antimicrobial resistance patterns exhibited towards extended-spectrum cephalosporins, beta-lactam/beta-lactamase inhibitor combinations, fluoroquinolones, and macrolides show the risk of co-resistance associated with ESBL-producing isolates responsible for MDR. …”
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Phenotypic and genotypic characterization of clinical carbapenem-resistant Acinetobacter species harboring the metallo-beta-lactamases IMP-8 or NDM-1 in China by Qingye Xu, Xinli Mu, Jintao He, Haiyang Liu, Xiaochen Liu, Yanfei Wang, Xiaoting Hua, Yunsong Yu

“…Additionally, multiple resistance genes, including those conferring resistance to aminoglycosides, tetracyclines, and macrolides, were detected on plasmids from these strains. …”
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Molecular characterization of ST15 carbapenem-resistant Klebsiella pneumoniae isolated in a single patient by Yongjin Hu, Rong Tang, Shanshan Jin, Jiahao Guan, Xiaoxiao Meng, Zengpeijie Dan, Ruilan Wang, Hong-Yu Ou, Jian Lu

“…Six of the strains were classified as CRKP, all of which carried 11 drug resistance genes: oqxB, oqxA, fosA6, aac(3)-lld, blaSHV-28, blaKPC-2, blaOXA-1, mph(A), tet(A), catB3 and aac(6′)-lb-cr, mediating drug resistance to quinolones, fosfomycin, aminoglycosides, β-lactam, carbapenems, macrolides and chloramphenicol, belonging to multi-drug resistant bacteria. …”
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Resistome phylodynamics of multidrug-resistant Shigella isolated from diarrheal patients by Asaduzzaman Asad, Md. Abu Jaher Nayeem, Md. Golam Mostafa, Ruma Begum, Shah Nayeem Faruque, Suraia Nusrin, Israt Jahan, Shoma Hayat, Zhahirul Islam

“…Two third-generation cephalosporin-resistant [wubC-blaCTX-M-15-ISEcp1 and blaTEM-1] and two macrolide-resistant mobile genomic islands (GIs) [mphA-mrx-mph(R)A-IS6100 and mphE-msrE-IS482-IS6] had emerged in Shigella in Bangladesh. …”
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Prevailing Antibiotic Resistance Patterns in Hospitalized Patients with Urinary Tract Infections in a Vietnamese Teaching Hospital (2014 &ndash; 2021) by Le HHL, Thuc LC, Ta TB, Tran TV, Hung DV, Kien HT, Le MN, Luong VH, Nguyen VTH, Pham HQ, Le HV, Viet NH, Hoang LH, Nguyen TT, Latsavong M, Le TD, Trong Tuan D, An NV

“…Among Gram-positive bacteria, high resistance was seen for macrolides ranging from 85.5% (azithromycin) to 89.8% (erythromycin), and for tetracyclines, ranging from 0% (teicoplanin) to 85.2% (tetracycline). …”
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