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Wang Y, Gao M, Yang J, Li H, Han X, Wang S, Pan M. Bimetallic Ag/Au nanoclusters encapsulated in ZIF-8 framework: A novel strategy for ratiometric fluorescence detection of doxycycline in food. Food Chem 2024; 445:138738. [PMID: 38364497 DOI: 10.1016/j.foodchem.2024.138738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 02/08/2024] [Accepted: 02/09/2024] [Indexed: 02/18/2024]
Abstract
This study successfully encapsulated the Ag+-doped Au nanoclusters (Ag/AuNCs) within the ZIF-8 framework to construct a novel Ag/AuNCs@ZIF-8 ratiometric fluorescent probe for the antibiotic doxycycline (DOX) detection. The incorporation of Ag+ contributed to the fluorescence enhancement of the nanoclusters through the "silver effect", consequently improving the stability of the developed bimetallic Ag/AuNCs. Furthermore, the encapsulation of bimetallic Ag/AuNCs within the ZIF-8 framework restricted their intramolecular vibrations, resulting in further amplification of fluorescence intensity at 595 nm. The ZIF-8 also sensitized the restoration of DOX green fluorescence at 515 nm. Within the concentration range of 0.001-20 μg mL-1, the ratio of fluorescence intensity (F515/F595) exhibited a favorable linearity for DOX concentration, with a detection limit of 36.8 ng mL-1. This ratiometric fluorescence approach had the promising potential for accurate and efficient quantitative detection of DOX residue in food and served as a valuable reference for rapid monitoring of food contaminants.
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Affiliation(s)
- Yueyao Wang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China
| | - Mengmeng Gao
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China
| | - Jingying Yang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China
| | - Huilin Li
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China
| | - Xintong Han
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China
| | - Shuo Wang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China.
| | - Mingfei Pan
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Key Laboratory of Food Quality and Health of Tianjin, Tianjin University of Science & Technology, 300457 Tianjin, China.
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Chang HF, Cheng JY. Glioblastoma U-87 cell electrotaxis is hindered by doxycycline with a concomitant reduction in the matrix metallopeptidase-9 expression. Biochem Biophys Rep 2024; 38:101690. [PMID: 38571555 PMCID: PMC10987802 DOI: 10.1016/j.bbrep.2024.101690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 03/15/2024] [Accepted: 03/19/2024] [Indexed: 04/05/2024] Open
Abstract
Electric fields (EF) play an essential role in cancer cell migration. Numerous cancer cell types exhibit electrotaxis under direct current electric fields (dcEF) of physiological electric field strength (EFs). This study investigated the effects of doxycycline on the electrotactic responses of U87 cells. After EF stimulation, U87 cells migrated toward the cathode, whereas doxycycline-treated U87 cells exhibited enhanced cell mobility but hindered cathodal migration. We further investigated the expression of the metastasis-correlated proteins matrix metallopeptidase-2 (MMP-2) and MMP-9 in U87 cells. The levels of MMP-2 in the cells were not altered under EF or doxycycline stimulation. In contrast, the EF stimulation greatly enhanced the levels of MMP-9 and then repressed in doxycycline-cotreated cells, accompanied by reduced cathodal migration. Our results demonstrated that an antibiotic at a non-toxic concentration could suppress the enhanced cell migration accelerated by EF of physiological strength. This finding may be applied as an anti-metastatic treatment for cancers.
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Affiliation(s)
- Hui-Fang Chang
- Research Center for Applied Sciences, Academia Sinica, Taipei, Taiwan
| | - Ji-Yen Cheng
- Research Center for Applied Sciences, Academia Sinica, Taipei, Taiwan
- Institute of Biophotonics, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Mechanical and Mechatronic Engineering, National Taiwan Ocean University, Keelung, Taiwan
- College of Engineering, Chang Gung University, Taoyuan, Taiwan
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Chen X, Zhu Y, Zheng W, Yan S, Li Y, Xie S. Elucidating doxycycline biotransformation mechanism by Chryseobacterium sp. WX1: Multi-omics insights. J Hazard Mater 2024; 469:133975. [PMID: 38452667 DOI: 10.1016/j.jhazmat.2024.133975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 03/04/2024] [Accepted: 03/04/2024] [Indexed: 03/09/2024]
Abstract
Doxycycline (DOX) represents a second-generation tetracycline antibiotic that persists as a challenging-to-degrade contaminant in environmental compartments. Despite its ubiquity, scant literature exists on bacteria proficient in DOX degradation. This study marked a substantial advancement in this field by isolating Chryseobacterium sp. WX1 from an activated sludge enrichment culture, showcasing its unprecedented ability to completely degrade 50 mg/L of DOX within 44 h. Throughout the degradation process, seven biotransformation products were identified, revealing a complex pathway that began with the hydroxylation of DOX, followed by a series of transformations. Employing an integrated multi-omics approach alongside in vitro heterologous expression assays, our study distinctly identified the tetX gene as a critical facilitator of DOX hydroxylation. Proteomic analyses further pinpointed the enzymes postulated to mediate the downstream modifications of DOX hydroxylation derivatives. The elucidated degradation pathway encompassed several key biological processes, such as the microbial transmembrane transport of DOX and its intermediates, the orchestration of enzyme synthesis for transformation, energy metabolism, and other gene-regulated biological directives. This study provides the first insight into the adaptive biotransformation strategies of Chryseobacterium under DOX-induced stress, highlighting the potential applications of this strain to augment DOX removal in wastewater treatment systems containing high concentrations of DOX.
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Affiliation(s)
- Xiuli Chen
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Ying Zhu
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Wenli Zheng
- South China Institute of Environmental Sciences (SCIES), Ministry of Ecology and Environment (MEE), Guangzhou 510655, China
| | - Shuang Yan
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Yangyang Li
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Shuguang Xie
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China.
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Alrasheed M, Hamdy Mansy W, Naser Al-Arifi M. Community pharmacist intervention in doxycycline self-medication for acne among pregnant women in Saudi Arabia. Saudi Pharm J 2024; 32:102027. [PMID: 38525265 PMCID: PMC10960118 DOI: 10.1016/j.jsps.2024.102027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Accepted: 03/12/2024] [Indexed: 03/26/2024] Open
Abstract
Introduction Self-medication during pregnancy remains a prevalent global phenomenon, with pregnant women often relying on their own judgment to manage symptoms. Objective: This study aimed to assess community pharmacist practice regarding self-medication requests for acne treatment in pregnant women within Saudi Arabia. Methods A descriptive, observational cross-sectional study was conducted in Riyadh, Saudi Arabia. Community pharmacists completed a questionnaire after interacting with a simulated customer (SC) seeking doxycycline for a pregnant woman. Data were analyzed using SPSS software. Results One hundred community pharmacists participated in the study. The majority were between 25 and 35 years old (56 %) and worked in chain pharmacies (81 %). Notably, 71 % requested a prescription before dispensing any medication. While 66 % advised the SC to consult a physician or dermatologist, only 15 % inquired about the pregnancy and related information of the SC's sister. Conclusion This study suggests a positive trend in community pharmacy practice regarding self-medication requests during pregnancy. However, further improvement is needed, particularly in terms of in-depth inquiry about pregnancy status and potential risks associated with specific medications. Collaborative efforts between the Ministry of Health (MOH), Saudi Food and Drug Administration (SFDA), and pharmacy education programs are crucial to minimize inappropriate dispensing practices and ensure optimal patient safety.
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Affiliation(s)
- Marwan Alrasheed
- Department of Clinical Pharmacy, College of Pharmacy King Saud University, Riyadh 12372, Saudi Arabia
| | - Wael Hamdy Mansy
- Department of Clinical Pharmacy, College of Pharmacy King Saud University, Riyadh 12372, Saudi Arabia
| | - Mohamed Naser Al-Arifi
- Department of Clinical Pharmacy, College of Pharmacy King Saud University, Riyadh 12372, Saudi Arabia
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Kenyon C. Doxycycline post-exposure prophylaxis could theoretically select for resistance to various antimicrobials in 19 pathobionts: an in silico analysis. Int J Infect Dis 2024; 142:106974. [PMID: 38395219 DOI: 10.1016/j.ijid.2024.02.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 02/14/2024] [Accepted: 02/18/2024] [Indexed: 02/25/2024] Open
Abstract
OBJECTIVES Doxycycline post exposure prophylaxis (PEP) has been shown to reduce the incidence of bacterial STIs. However, if there is genetic linkage between resistance to tetracycline and other antimicrobials, then it could also select for resistance to these other antimicrobials. We therefore undertook to evaluate if there is an association between the minimum inhibitory concentrations (MICs) of tetracycline and other antimicrobials in 19 clinically important bacterial species. METHODS Mixed-effects linear regression was used to assess if minocycline MICs were associated with the MICs of eight other antimicrobials (ceftriaxone, ampicillin, oxacillin, vancomycin, erythromycin, levofloxacin, amikacin, and trimethoprim-sulfamethoxazole) in 19 bacterial species in the Antimicrobial Testing Leadership and Surveillance (ATLAS) database. RESULTS With the notable exception of vancomycin, where no association was found, strong positive associations were typically found between the MICs of minocycline and each of the eight antimicrobials in each of the species assessed. For example, the minocycline MICs of all the Gram-positive species were positively associated with ampicillin, ceftriaxone, oxacillin and erythromycin MICs (all P-values < 0.001). The only exceptions were ampicillin for Streptococcus pyogenes and ceftriaxone for S. dysgalactiae, where no significant associations were found. Similarly in the Gram-negative species, the minocycline MICs of all the species except Haemophilus influenzae and Stenotrophomonas maltophilia were positively associated with the MICs of ceftriaxone, ampicillin, levofloxacin and amikacin (all P-values < 0.001). CONCLUSIONS There is a theoretical risk that doxycycline PEP could select for resistance not only to tetracyclines but to a range of other antimicrobials in each of the 19 pathobionts assessed.
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Affiliation(s)
- Chris Kenyon
- STI Unit, Department of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium; Division of Infectious Diseases and HIV Medicine, University of Cape Town, Cape Town, South Africa.
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Thapa R, Pandey P, Parat MO, Gurung S, Parekh HS. Phase transforming in situ gels for sustained and controlled transmucosal drug delivery via the intravaginal route. Int J Pharm 2024; 655:124054. [PMID: 38548071 DOI: 10.1016/j.ijpharm.2024.124054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 03/24/2024] [Accepted: 03/25/2024] [Indexed: 04/01/2024]
Abstract
Direct, reliable, controlled, and sustained drug delivery to female reproductive tract (FRT) remains elusive, with conventional dosage forms falling way short of the mark, leading to premature leakage, erratic drug delivery, and loss of compliance. Historically, the intravaginal route remains underserved by the pharmaceutical sector. To comprehensively address this, we turned our focus to phase-transforming sol-gels, using poloxamers, a thermosensitive polymer and, doxycycline (as hyclate salt, DOXH) as our model agent given its potential use in sexually transmitted infections (STIs). We further enhanced mucoadhesiveness through screening of differing viscosity grade hydroxypropyl methyl celluloses (HPMCs). The optimised sol-gels remained gelled at body temperature (<37 °C) and were prepared in buffer aligned to vaginal cavity pH and osmolality. Lead formulations were progressed based on their ability to retain key rheological properties, and acidic pH in the presence of simulated vaginal fluid (SVF). From a shelf-life perspective, DOXH stability, gelation temperature (Tsol-gel), and pH to three months (2-8 °C) was attained. In summary, the meticulously engineered, phase-transforming sol-gels provided sustained mucoretention despite dilution by vaginal fluid, paving the way for localised antimicrobial drug delivery at concentrations that potentially far exceed the minimum inhibitory concentration (MIC) for target STI-causing bacteria of the FRT.
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Affiliation(s)
- Ritu Thapa
- School of Pharamcy, The University of Queensland, 20 Cornwall St, Woollongabba, QLD 4102, Australia
| | - Preeti Pandey
- School of Pharamcy, The University of Queensland, 20 Cornwall St, Woollongabba, QLD 4102, Australia.
| | - Marie-Odile Parat
- School of Pharamcy, The University of Queensland, 20 Cornwall St, Woollongabba, QLD 4102, Australia
| | - Shila Gurung
- School of Health and Allied Sciences, Pokhara University, Pokhara-30, Kaski 33700, Nepal
| | - Harendra S Parekh
- School of Pharamcy, The University of Queensland, 20 Cornwall St, Woollongabba, QLD 4102, Australia.
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Miao J, Yu J, Zhao X, Chen X, Zhu C, Cao X, Huang Y, Li B, Wu Y, Chen L, Wang X. Molecular imprinting-based triple-emission ratiometric fluorescence sensor with aggregation-induced emission effect for visual detection of doxycycline. J Hazard Mater 2024; 470:134218. [PMID: 38581878 DOI: 10.1016/j.jhazmat.2024.134218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 03/20/2024] [Accepted: 04/03/2024] [Indexed: 04/08/2024]
Abstract
The development of high-performance sensors for doxycycline (DOX) detection is necessary because its residue accumulation will cause serious harm to human health and the environment. Here, a novel tri-emission ratiometric fluorescence sensor was proposed by using "post-mixing" strategy of different emissions fluorescence molecularly imprinted polymers with salicylamide as dummy template (DMIPs). BSA was chosen as assistant functional monomer, and also acted as sensitizers for the aggregation-induced emission (AIE) effect of DOX. The blue-emitting carbon dots and the red-emitting CdTe quantum dots were separately introduced into DMIPs as the response signals. Upon DOX recognition within 2 min, blue and red fluorescence of the tri-emission DMIPs sensor were quenched while green fluorescence of DOX was enhanced, resulting in a wide range of color variations observed over bluish violet-rosered-light pink-orange-yellow-green with a detection limit of 0.061 μM. The sensor possessed highly selective recognition and was successfully applied to detect DOX in complicated real samples. Moreover, with the fluorescent color collection and data processing, the smartphone-assisted visual detection of the sensors showed satisfied sensitivity with low detection limit. This work provides great potential applications for rapid and visual detection of antibiotics in complex substrates.
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Affiliation(s)
- Jiaqi Miao
- School of Pharmacy, Binzhou Medical University, Yantai 264003, China
| | - Jialuo Yu
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Shandong Key Laboratory of Coastal Environmental Processes, Research Centre for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; Laboratory for Marine Biology and Biotechnology,Qingdao Marine Science and Technology Center, Qingdao 266237, China
| | - Xinming Zhao
- School of Pharmacy, Binzhou Medical University, Yantai 264003, China
| | - Xinru Chen
- School of Pharmacy, Binzhou Medical University, Yantai 264003, China
| | - Congzheng Zhu
- School of Pharmacy, Binzhou Medical University, Yantai 264003, China
| | - Xin Cao
- School of Pharmacy, Binzhou Medical University, Yantai 264003, China
| | - Yan Huang
- School of Pharmacy, Binzhou Medical University, Yantai 264003, China
| | - Bowei Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Shandong Key Laboratory of Coastal Environmental Processes, Research Centre for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; Laboratory for Marine Biology and Biotechnology,Qingdao Marine Science and Technology Center, Qingdao 266237, China
| | - Yixuan Wu
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Shandong Key Laboratory of Coastal Environmental Processes, Research Centre for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; Laboratory for Marine Biology and Biotechnology,Qingdao Marine Science and Technology Center, Qingdao 266237, China
| | - Lingxin Chen
- School of Pharmacy, Binzhou Medical University, Yantai 264003, China; CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Shandong Key Laboratory of Coastal Environmental Processes, Research Centre for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; Laboratory for Marine Biology and Biotechnology,Qingdao Marine Science and Technology Center, Qingdao 266237, China.
| | - Xiaoyan Wang
- School of Pharmacy, Binzhou Medical University, Yantai 264003, China.
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Saliy O, Popova M, Tarasenko H, Getalo O. Development strategy of novel drug formulations for the delivery of doxycycline in the treatment of wounds of various etiologies. Eur J Pharm Sci 2024; 195:106636. [PMID: 38185273 DOI: 10.1016/j.ejps.2023.106636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 11/01/2023] [Accepted: 11/10/2023] [Indexed: 01/09/2024]
Abstract
Doxycycline hyclate (DOXH) is a broad-spectrum antibiotic derived synthetically from tetracycline. Despite its use in clinical practice for more than 40 years, DOXH remains an effective antibiotic with retained activity. The potential advantages of DOXH for wound healing therapy include its mechanisms of action, such as anti-inflammatory effects, antioxidant properties, modulation of cellular processes, stimulation of collagen synthesis, and antimicrobial activity. As current standards of care aim to improve wound healing by promoting rapid closure, a relevant direction is the development of novel DOXH formulations for parenteral delivery that enhance both skin regeneration and control of infectious conditions. Oral delivery is the most common and commercially available route for administering DOXH therapeutic agents. However, parenteral delivery of DOXH, where the antibiotic substance is not in a solid state (as in powdered or compressed solid form) but rather dissolved in any carrier, presents challenges regarding DOX solubility and the stability of DOXH solutions, which are major factors complicating the development of new formulations for parenteral administration. This review discusses the achievements in research strategies and the development of new pharmaceutical formulations for the delivery of doxycycline in the treatment of wounds of various etiologies.
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Affiliation(s)
- Olena Saliy
- Department of Industrial Pharmacy, Kyiv National University of Technologies and Design, Mala Shyianovska (Nemyrovycha-Danchenka) Street, 2, Kyiv 01011, Ukraine
| | - Mariia Popova
- Department of Industrial Pharmacy, Kyiv National University of Technologies and Design, Mala Shyianovska (Nemyrovycha-Danchenka) Street, 2, Kyiv 01011, Ukraine.
| | - Hanna Tarasenko
- Department of Industrial Pharmacy, Kyiv National University of Technologies and Design, Mala Shyianovska (Nemyrovycha-Danchenka) Street, 2, Kyiv 01011, Ukraine
| | - Olga Getalo
- Department of Industrial, Clinical pharmacy and Clinical pharmacology, Shupyk National Healthcare University of Ukraine, Dorohozhytska Street 9, Kyiv 04112 Ukraine
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Wang J, Sun H, Feng J, Zhou J, Jing Z. Selenium Deficiency Promotes Dilatation of the Aorta by Increasing Expression and Activity of Vascular Smooth Muscle Cell Derived Matrix Metalloproteinase-2. Eur J Vasc Endovasc Surg 2024; 67:663-671. [PMID: 37863308 DOI: 10.1016/j.ejvs.2023.10.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 08/15/2023] [Accepted: 10/13/2023] [Indexed: 10/22/2023]
Abstract
OBJECTIVE Selenium (Se) is a key part of the body's oxidation defence system. However, it is unclear whether Se affects the development of aortic aneurysm (AA). An animal experiment was conducted to clarify the role of Se in AA development. METHODS C57BL/6N male mice were fed with a Se deficient (Se-D, < 0.05 mg/kg), Se adequate (Se-A, 0.2 mg/kg), or Se supplemented (Se-S, 1 mg/kg) diet for 8 weeks. Subsequently, an AA murine model (Se-D, n = 11; Se-A, n = 12; Se-S, n = 15) was established using angiotensin II (Ang II, 1 mg/kg/min) for four weeks plus β-aminopropionitrile (BAPN, 1 mg/mL) for the first two weeks. Saline replaced Ang II, and BAPN was removed during the modelling process for sham mice (Se-A, n = 9). To determine whether Se deficiency promoted aortic dilation via matrix metalloproteinase-2 (MMP-2), the non-specific MMP inhibitor doxycycline (Dox, 100 mg/kg/day) was given to Se-D AA mice (n = 7) for two weeks. RESULTS The maximum aortic diameter in Se-D AA model mice was significantly increased compared with Se-A AA model mice. MMP-2 expression and activity in the aortic media of Se-D AA model mice was significantly increased compared with Se-A AA model mice. A large number of vascular smooth muscle cells (VSMCs) were found aggregating in the media of the non-dilated aorta of Se-D AA model mice, which was completely inhibited by Dox. The percentage of VSMCs in aortic media of Se-D AA model mice was significantly higher than in Se-A AA model mice. The maximum aortic diameter and occurrence rate of AA in Se-D AA model mice with Dox were significantly reduced compared with Se-D AA model mice. CONCLUSION Se deficiency promoted dilatation of the aorta in AA model mice by increasing expression and activity of VSMC derived MMP-2, causing abnormal aggregation and proliferation of VSMCs in aortic media.
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Affiliation(s)
- Jiannan Wang
- Department of Vascular Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Huiying Sun
- Department of Vascular Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Jiaxuan Feng
- Department of Vascular Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Jian Zhou
- Department of Vascular Surgery, Changhai Hospital, Naval Medical University, Shanghai, China.
| | - Zaiping Jing
- Department of Vascular Surgery, Changhai Hospital, Naval Medical University, Shanghai, China.
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10
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Wen X, Chen M, Ma B, Xu J, Zhu T, Zou Y, Liao X, Wang Y, Worrich A, Wu Y. Removal of antibiotic resistance genes during swine manure composting is strongly impaired by high levels of doxycycline residues. Waste Manag 2024; 177:76-85. [PMID: 38290350 DOI: 10.1016/j.wasman.2024.01.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 01/20/2024] [Accepted: 01/22/2024] [Indexed: 02/01/2024]
Abstract
Antibiotic resistance genes (ARGs) are emerging pollutants that enter the farm and surrounding environment via the manure of antibiotic-treated animals. Pretreatment of livestock manure by composting decreases ARGs abundance, but how antibiotic residues affect ARGs removal efficiency remains poorly understood. Here, we explored the fate of the resistome under different doxycycline residue levels during aerobic swine manure composting. Metagenomic sequencing showed that the presence of high levels of doxycycline generally had a higher abundance of tetracycline ARGs, and their dominant host bacteria of Firmicutes, especially Clostridium and Streptococcus, also had limited elimination in composting under high levels of doxycycline stress. Moreover, high levels of doxycycline impaired the removal of the total ARGs number in finished composts, with a removal rate of 51.74 % compared to 63.70 % and 71.52 % for the control and low-level doxycycline manure, respectively. Horizontal gene transfer and strengthened correlations among the bacterial community fostered ARGs preservation at high doxycycline levels during composting. In addition, ARGs carried by both plasmids and chromosomes, such as multidrug ARGs, showed wide host characteristics and rebound during compost maturation. Compared with chromosomes, a greater variety of ARGs on plasmids suggested that the majority of ARGs were characterized by horizontal mobility during composting, and the cross-host characteristics of ARGs during composting deserve further attention. This study provided deep insight into the fate of ARGs under residual antibiotic stress during manure composting and reminded the associated risk for environmental and public health.
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Affiliation(s)
- Xin Wen
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Department of Environmental Microbiology, Helmholtz Centre for Environmental Research-UFZ, Leipzig 04318, Germany
| | - Majian Chen
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Animal Science, South China Agricultural University, Guangzhou 510642, China
| | - Baohua Ma
- Foshan Customs Comprehensive Technology Center, Foshan 528200, China
| | - Jiaojiao Xu
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Animal Science, South China Agricultural University, Guangzhou 510642, China
| | - Ting Zhu
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Animal Science, South China Agricultural University, Guangzhou 510642, China
| | - Yongde Zou
- Foshan Customs Comprehensive Technology Center, Foshan 528200, China
| | - Xindi Liao
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510642, China; State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affair, South China Agricultural University, Guangzhou 510642, China
| | - Yan Wang
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510642, China; State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affair, South China Agricultural University, Guangzhou 510642, China
| | - Anja Worrich
- Department of Environmental Microbiology, Helmholtz Centre for Environmental Research-UFZ, Leipzig 04318, Germany
| | - Yinbao Wu
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong 525000, China; National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510642, China; State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, and Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affair, South China Agricultural University, Guangzhou 510642, China.
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Ullah I, Shahzad SA, Assiri MA, Ullah MZ, Irshad H, Farooq U. A combined experimental and theoretical approach for doxycycline sensing using simple fluorescent probe with distinct fluorescence change in wide range of interferences. Spectrochim Acta A Mol Biomol Spectrosc 2024; 314:124224. [PMID: 38574611 DOI: 10.1016/j.saa.2024.124224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 03/19/2024] [Accepted: 03/29/2024] [Indexed: 04/06/2024]
Abstract
Overuse of doxycycline (DOXY) can cause serious problems to human health, environment and food quality. So, it is essential to develop a new sensing methodology that is both sensitive and selective for the quantitative detection of DOXY. In our current research, we synthesized a simple fluorescent probe 4,4'-bis(benzyloxy)-1,1'-biphenyl (BBP) for the highly selective detection of doxycycline by through fluorescence spectroscopy. The probe BBP displayed ultra-sensitivity towards doxycycline due to Forster resonance energy transfer (FRET). Fluorescence spectroscopy, density functional theory (DFT), 1H NMR titration, UV-Vis, and Job's plot were used to confirm the sensing mechanism. The charge transfer between the probe and analyte was further examined qualitatively by electron density differences (EDD) and quantitively by natural bond orbital (NBO) analyses. Whereas the non-covalent nature of probe BBP towards DOXY was verified by theoretical non-covalent interaction (NCI) analysis as along with Bader's quantum theory of atoms in molecules (QTAIM) analysis. Furthermore, probe BBP was also practically employed for the detection of doxycycline in fish samples, pharmaceutical wastewater and blood samples.
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Affiliation(s)
- Ikram Ullah
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, University Road, Abbottabad 22060, Pakistan
| | - Sohail Anjum Shahzad
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, University Road, Abbottabad 22060, Pakistan.
| | - Mohammed A Assiri
- Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Research Center for Advanced Materials Science (RCAMS), King Khalid University, P. O. Box 9004, Abha 61514, Saudi Arabia
| | - Muhammad Zahid Ullah
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, University Road, Abbottabad 22060, Pakistan
| | - Hasher Irshad
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, University Road, Abbottabad 22060, Pakistan
| | - Umar Farooq
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, University Road, Abbottabad 22060, Pakistan.
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12
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Kim DH, Shin H, Stybayeva G, Hwang SH. A comparison of doxycycline and conventional treatments of refractory chronic rhinosinusitis with nasal polyps: a systematic review and meta-analysis. Eur Arch Otorhinolaryngol 2024:10.1007/s00405-024-08563-7. [PMID: 38512383 DOI: 10.1007/s00405-024-08563-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 02/15/2024] [Indexed: 03/23/2024]
Abstract
PURPOSE To compare the effects of doxycycline (DOX) and conventional management in patients with refractory chronic rhinosinusitis and nasal polyps (CRSwNP). METHODS Six databases were searched to September 2023. We retrieved studies that compared improvements in refractory chronic sinusitis-related symptoms between DOX-treated and control groups. RESULTS DOX significantly reduced the Lund-Kennedy (LK) score [- 0.3670 (range - 0.6173; - 0.1166); I2 = 92.8%], the nasal polyposis score [- 0.9484 (- 1.2287; - 0.6680); I2 = 92.5%], the patient-reported Sinonasal Outcome Test (SNOT) score [- 0.3141 (- 0.4622; - 0.1660); I2 = 91.2%], and the nasal obstruction score [- 0.1813 (- 0.3382; - 0.0243); I2 = 86.2%]. On subgroup analyses by the measurement timepoints, the extent of nasal polyposis was significantly lower in the DOX group during treatment, at the end of treatment, and 4 and 8 weeks later. The LK scores also indicated improvements during treatment and at the end of treatment. The SNOT score tended to decrease with time in the treatment group. Nasal obstruction symptoms improved during treatment and 4 weeks later. CONCLUSION DOX enhances the postoperative endoscopic outcomes of refractory CRSwNP patients by reducing recurrent polyposis and inflammation.
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Affiliation(s)
- Do Hyun Kim
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - Hyesoo Shin
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - Gulnaz Stybayeva
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - Se Hwan Hwang
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Bucheon St. Mary's Hospital, The Catholic University of Korea, 327 Sosa-ro, Bucheon-si, Gyeonggi-do, Seoul, 14647, Korea.
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13
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Chaúque BJM, Jank L, Benetti AD, Rott MB. Preliminary insights on the development of a continuous-flow solar system for the photocatalytic degradation of contaminants of emerging concern in water. Environ Sci Pollut Res Int 2024:10.1007/s11356-024-32879-w. [PMID: 38499929 DOI: 10.1007/s11356-024-32879-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 03/09/2024] [Indexed: 03/20/2024]
Abstract
The ubiquity and impact of pharmaceuticals and pesticides, as well as their residues in environmental compartments, particularly in water, have raised human and environmental health concerns. This emphasizes the need of developing sustainable methods for their removal. Solar-driven photocatalytic degradation has emerged as a promising approach for the chemical decontamination of water, sparking intensive scientific research in this field. Advancements in photocatalytic materials have driven the need for solar reactors that efficiently integrate photocatalysts for real-world water treatment. This study reports preliminary results from the development and evaluation of a solar system for TiO2-based photocatalytic degradation of intermittently flowing water contaminated with doxycycline (DXC), sulfamethoxazole (SMX), dexamethasone (DXM), and carbendazim (CBZ). The system consisted of a Fresnel-type UV solar concentrator that focused on the opening and focal point of a parabolic trough concentrator, within which tubular quartz glass reactors were fixed. Concentric springs coated with TiO2, arranged one inside the other, were fixed inside the quartz reactors. The reactors are connected to a raw water tank at the inlet and a check valve at the outlet. Rotating wheels at the collector base enable solar tracking in two axes. The substances (SMX, DXC, and CBZ) were dissolved in dechlorinated tap water at a concentration of 1.0 mg/L, except DXM (0.8 mg/L). The water underwent sequential batch (~ 3 L each, without recirculation) processing with retention times of 15, 30, 60, 90, and 120 min. After 15 min, the degradation rates were as follows: DXC 87%, SMX 35.5%, DXM 32%, and CBZ 31.8%. The system processed 101 L of water daily, simultaneously removing 870, 355, 256, and 318 µg/L of DXC, SMX, DXM, and CBZ, respectively, showcasing its potential for real-world chemical water decontamination application. Further enhancements that enable continuous-flow operation and integrate highly effective adsorbents and photocatalytic materials can significantly enhance system performance.
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Affiliation(s)
- Beni Jequicene Mussengue Chaúque
- Laboratory of Protozoology, Department of Microbiology, Immunology, and Parasitology, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul, Sarmento Leite Street, N 500, Porto Alegre, Rio Grande do Sul, 90050-170, Brazil
- Postgraduate Program in Biological Sciences: Pharmacology and Therapeutics, UFRGS, Rio Grande do Sul, Brazil
- Center of Studies in Science and Technology (NECET), Biology Course, Universidade Rovuma, Niassa Branch, Lichinga, Mozambique
| | - Louise Jank
- Ministério da Agricultura, Pecuária e Abastecimento (MAPA), Porto Alegre, Rio Grande do Sul, Brazil
| | | | - Marilise Brittes Rott
- Laboratory of Protozoology, Department of Microbiology, Immunology, and Parasitology, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul, Sarmento Leite Street, N 500, Porto Alegre, Rio Grande do Sul, 90050-170, Brazil.
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14
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Sivaranjani PR, Subhiksha V, Okla MK, Janani B, Abdel-Maksoud MA, Al-Amri SS, Alaraidh IA, Alatar AA, Khan SS. Construction of p-n-p nano heterojunction through coupling La 2O 3, (BiO) 2CO 3 and Ag 3PO 4 for effective photocatalytic degradation of doxycycline: Insights into mechanism, pathway and intermediate toxicity evaluation. Environ Pollut 2024; 345:123521. [PMID: 38331239 DOI: 10.1016/j.envpol.2024.123521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 02/04/2024] [Accepted: 02/05/2024] [Indexed: 02/10/2024]
Abstract
The present work is centred around the development of La2O3/(BiO)2CO3/Ag3PO4 (LBA), a p-n-p nano-heterojunction to photodegrade doxycycline under visible light irradiation. Here, ultrasonication assisted co-precipitation method was employed to synthesize the photocatalyst. The photocatalyst was characterized using different analysis such as SEM, TEM, elemental mapping, XRD, XPS, FTIR, Raman, BET, DRS, PL and EIS which confirmed the successful fabrication of LBA and their excellent ability to refrain the e-/h+ recombination owing to the construction of the heterojunction. LBA was found to degrade DOX by 91.75 % with the high mineralization of 87.23%. The impact of the reaction parameters influencing the photodegradation process including the concentration of the NCs and DOX, pH and the influence of the commonly present anions were studied. The stability and reusability of the LBA was assessed through subjecting it to four cycles of photodegradation of DOX. In addition, the recovered LBA was characterized through XPS and XRD analysis to confirm the particles stability and reusability. The active participation of the photogenerated charges and the reactive oxygen species were identified through the scavenging assay and ESR analysis. Further, GC-MS/MS analysis was performed to put forward a plausible photodegradation pathway. The toxicity of the end products as well as the intermediates was predicted through ECOSAR software.
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Affiliation(s)
- P R Sivaranjani
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India
| | - V Subhiksha
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India
| | - Mohammad K Okla
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - B Janani
- Nano-imaging and Spectroscopy Laboratory, Faculty of Science, University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, ON, L1G 0C5, Canada
| | - Mostafa A Abdel-Maksoud
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Saud S Al-Amri
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Ibrahim A Alaraidh
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Abdulrahman A Alatar
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - S Sudheer Khan
- Department of Oral Medicine and Radiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, 600077, Tamil Nadu, India.
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15
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Chen Y, Zhang Y, Tang QN, Shi HB. Efficacy of doxycycline therapy for macrolide-resistant Mycoplasma pneumoniae pneumonia in children at different periods. Ital J Pediatr 2024; 50:38. [PMID: 38439015 PMCID: PMC10913651 DOI: 10.1186/s13052-024-01615-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Accepted: 02/24/2024] [Indexed: 03/06/2024] Open
Abstract
BACKGROUND The prevalence of macrolide-resistant Mycoplasma pneumoniae has increased considerably. Treatment in children has become challenging. This study aimed to evaluate the efficacy of doxycycline therapy for macrolide-resistant Mycoplasma pneumoniae pneumonia in children at different periods. METHODS We retrospectively analyzed the data of patients with macrolide-resistant Mycoplasma pneumoniae pneumonia hospitalized between May 2019 to August 2022. According to treatment, patients were divided into three groups: oral doxycycline treatment alone (DOX group), changed from intravenous azithromycin to oral doxycycline (ATD group), and intravenous azithromycin treatment alone (AZI group). ATD group cases were separated into two sub-groups: intravenous azithromycin treatment<3 days (ATD1 group) and ≥ 3 days (ATD2 group). Clinical symptoms were compared in each group and adjusted by Propensity score matching (PSM) analysis. RESULTS A total of 106 were recruited in this study. 17 (16%) were in DOX group, 58 (55%) in ATD group, and 31(29%) in AZI group. Compared with ATD group and AZI group, the DOX group showed shorter hospitalization duration and fever duration after treatment, while higher rate of chest radiographic improvement. After using PSM analysis, shorter days to hospitalization duration (P = 0.037) and to fever duration after treatment (P = 0.027) in DOX + ATD1 group than in ATD2 group was observed. A higher number of patients in the DOX + ATD1 group achieved defervescence within 72 h (P = 0.031), and fewer children received glucocorticoid adjuvant therapy (P = 0.002). No adverse reactions associated with doxycycline was observed during treatment. CONCLUSIONS Children receiving early oral doxycycline had a shorter duration of fever and hospitalization in macrolide-resistant Mycoplasma pneumoniae patients.
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Affiliation(s)
- Ying Chen
- Pediatric Department, Ningbo Medical Center Lihuili Hospital, Ningbo, Zhejiang, China
| | - Yan Zhang
- Pediatric Department, Ningbo Medical Center Lihuili Hospital, Ningbo, Zhejiang, China
| | - Qiong-Ni Tang
- Pediatric Department, Ningbo Medical Center Lihuili Hospital, Ningbo, Zhejiang, China
| | - Hong-Bo Shi
- Pediatric Department, Ningbo Medical Center Lihuili Hospital, Ningbo, Zhejiang, China.
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16
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Haaland RE, Fountain J, Edwards TE, Dinh C, Martin A, Omoyege D, Conway-Washington C, Kelley CF, Heneine W. Pharmacokinetics of single dose doxycycline in the rectum, vagina, and urethra: implications for prevention of bacterial sexually transmitted infections. EBioMedicine 2024; 101:105037. [PMID: 38428259 PMCID: PMC10910237 DOI: 10.1016/j.ebiom.2024.105037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 02/08/2024] [Accepted: 02/13/2024] [Indexed: 03/03/2024] Open
Abstract
BACKGROUND Clinical trials showed a single oral dose of doxycycline taken after sex protects against STIs among men who have sex with men (MSM) but not women. Pharmacokinetic data at vaginal, rectal and penile sites of STI exposure are lacking. We examined vaginal, rectal and urethral doxycycline concentrations in men and women to better inform STI prevention. METHODS Doxycycline pharmacokinetics in male and female participants 18-59 years of age were evaluated in blood and urine and on rectal and vaginal swabs collected at 1, 2, 4, 8, 24, 48, 72, 96 and 168 h after receiving a 200 mg oral doxycycline dose in a non-randomised single dose open label single centre study in Atlanta, Georgia. Rectal, vaginal, and cervical biopsies and male urethral swabs were collected 24 h after dosing (Trial registration: NCT04860505). Doxycycline was measured by liquid chromatography-mass spectrometry. FINDINGS Eleven male and nine female participants participated in the study. Doxycycline concentrations on rectal and vaginal swabs collected up to 96 h after dosing were approximately twice those of plasma and remained above minimum inhibitory concentrations (MICs) for at least four, three, and two days for Chlamydia trachomatis, Treponema pallidum, and tetracycline-sensitive Neisseria gonorrhoeae, respectively. Geometric mean doxycycline concentrations in male urethral secretions (1.166 μg/mL; 95% CI 0.568-2.394 μg/mL), male rectal (0.596 μg/g; 0.442-0.803 μg/g), vaginal (0.261 μg/g; 0.098-0.696 μg/g) and cervical tissue (0.410 μg/g; 0.193-0.870 μg/g) in biopsies collected 24 h after dosing exceeded MICs. Plasma and urine doxycycline levels defined adherence markers up to four and seven days postdosing, respectively. No adverse events were reported in this study. INTERPRETATION Doxycycline efficiently distributes to the rectum, vagina and urethra. Findings can help explain efficacy of STI prevention by doxycycline. FUNDING Funded by CDC intramural funds, CDC contract HCVJCG-2020-45044 (to CFK).
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Affiliation(s)
- Richard E Haaland
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA.
| | - Jeffrey Fountain
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Tiancheng E Edwards
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Chuong Dinh
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Amy Martin
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Deborah Omoyege
- The Hope Clinic of the Emory Vaccine Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Christopher Conway-Washington
- The Hope Clinic of the Emory Vaccine Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Colleen F Kelley
- The Hope Clinic of the Emory Vaccine Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA; Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Walid Heneine
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
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de Witte LD, Munk Laursen T, Corcoran CM, Munk-Olsen T, Bergink V. Association between doxycycline use and long-term functioning in patients with schizophrenia. Brain Behav Immun 2024; 117:66-69. [PMID: 38169245 PMCID: PMC10932900 DOI: 10.1016/j.bbi.2023.12.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 10/24/2023] [Accepted: 12/27/2023] [Indexed: 01/05/2024] Open
Abstract
IMPORTANCE AND OBJECTIVE The brain-penetrant tetracycline antibiotics, minocycline and doxycycline, have been proposed as potential candidate drugs for treatment of schizophrenia, based on preclinical studies and clinical trials. A potential long-term beneficial effect of these antibiotics for schizophrenia patients has not been investigated. This study was designed to determine if redemption of doxycycline prescription in schizophrenia is associated with decreased incidence of disability pension, a proxy for long-term functioning. DESIGN We performed a population-based cohort study with data from schizophrenia patients available through the Danish registers. Survival analysis models with time-varying covariates were constructed to assess incidence rate ratios (IRR) of disability pension after exposure to doxycycline or a non-brain penetrant tetracycline, defined as at least one filled prescription. The analysis was adjusted for age, sex, calendar year, parental psychiatric status and educational level. RESULTS We used data from 11,157 individuals with schizophrenia (4,945 female and 6,212 male; average age 22.4 years old, standard deviation (std) 4.50). 718 of these were exposed to brain-penetrant doxycycline, and 1,498 individuals redeemed a prescription of one or more of the non-brain-penetrant tetracyclines. The average years at risk per person in this cohort was 4.9, and 2,901 individuals received disability pension in the follow-up period. There was a significantly lower incidence rate of disability pension in schizophrenia patients who had redeemed doxycycline compared to patients who did not redeem a prescription of any tetracycline antibiotics (Incidence rate ratio (IRR) 0.68; 95 % CI 0.56, 0.83). There was also a significant lower rate of disability pension in schizophrenia patients who redeemed doxycycline compared to individuals who redeemed a prescription of one of the non-brain penetrant tetracycline antibiotics (IRR 0.69 95 % CI 0.55, 0.87). CONCLUSIONS In this observational study, doxycycline exposure is associated with a reduced incidence of disability pension. These data support further studies on the potential long term neuroprotective effects of doxycycline and level of functioning in schizophrenia patients.
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Affiliation(s)
- Lot D de Witte
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
| | - Thomas Munk Laursen
- The National Center for Register-based Research, Aarhus University, Aarhus, Denmark
| | - Cheryl M Corcoran
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Mental Illness Research, Education and Clinical Center (MIRECC), James J Peters VA Medical Center, Bronx, NY, USA
| | - Trine Munk-Olsen
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Veerle Bergink
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Department of Psychiatry, Erasmus Medical Center, Rotterdam, the Netherlands
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18
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Mah JM, Lo C, O'Connor MD. Isolated Intracranial Hypertension as a Presentation of Pediatric Lyme Borreliosis: A Case Report and Literature Review. Pediatr Neurol 2024; 152:196-199. [PMID: 38301323 DOI: 10.1016/j.pediatrneurol.2023.12.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 12/10/2023] [Accepted: 12/28/2023] [Indexed: 02/03/2024]
Abstract
BACKGROUND It is extremely rare for Lyme borreliosis to present solely with features of increased intracranial pressure. The treatment of pediatric Lyme neuroborreliosis with oral versus intravenous antibiotics remains controversial. METHODS Case report and literature review. RESULTS A 13-year-old male presented with five days of binocular diplopia, several weeks of headache, and a history of multiple tick bites six weeks prior. His examination showed a left eye abduction deficit and bilateral optic disc edema. Magnetic resonance imaging (MRI) of the brain with contrast showed tortuosity of the optic nerves, prominence of the optic nerve sheaths, and enhancement of the left fifth and bilateral sixth cranial nerves. Lumbar puncture showed an elevated opening pressure and a lymphocytic pleocytosis. Lyme IgM and IgG antibodies were positive in the serum and cerebrospinal fluid. The patient was treated with intravenous ceftriaxone for two days empirically followed by doxycycline by mouth for 19 days. Symptoms began improving after 48 hours. The strabismus resolved after two weeks, and the papilledema improved slowly with complete resolution at six months. CONCLUSIONS Lyme neuroborreliosis can present as isolated intracranial hypertension in the pediatric population; it can be differentiated from idiopathic intracranial hypertension on MRI, and lumbar puncture and can be confirmed with serum antibody testing. Oral doxycycline can be considered for Lyme neuroborreliosis in children.
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Affiliation(s)
- Jeffrey M Mah
- Department of Ophthalmology, University of Ottawa, Roger Guindon Hall, Ottawa, Ontario.
| | - Cody Lo
- Department of Ophthalmology, University of Ottawa, Roger Guindon Hall, Ottawa, Ontario
| | - Michael D O'Connor
- Department of Ophthalmology, University of Ottawa, Roger Guindon Hall, Ottawa, Ontario
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Cappellini A, Minerba P, Maimaris S, Biagi F. Whipple's disease: A rare disease that can be spotted by many doctors. Eur J Intern Med 2024; 121:25-29. [PMID: 38105122 DOI: 10.1016/j.ejim.2023.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/05/2023] [Accepted: 12/10/2023] [Indexed: 12/19/2023]
Abstract
Whipple's disease, an extremely rare, chronic infection caused by Tropheryma whipplei, an actinobacterium ubiquitously present in the environment, is a multisystemic condition that can affect several organs. Therefore, Whipple's disease should always be considered by physicians working across various branches of medicine, including internal medicine, rheumatology, infectious diseases, gastroenterology, haematology, and neurology. Initially, Whipple's disease is challenging to diagnose due to both its rarity and non-specific clinical features, almost indistinguishable from rheumatological conditions. A few years later, the onset of gastrointestinal symptoms increases the specificity of its clinical picture and helps in reaching the correct diagnosis. Diagnosis is typically made by finding PAS-positive macrophages in the lamina propria at duodenal biopsy. PCR for Tropheryma whipplei is nowadays also increasingly available, and represents an undeniable help in diagnosing this condition. However, it may also be misleading as false positives can occur. If not promptly recognized and treated, central nervous system involvement may develop, which can be fatal. The therapeutic gold standard has not yet been fully established, particularly in cases of recurrent disease, neurological involvement, and an immune reconstitution inflammatory syndrome that may arise following the initiation of antibiotic therapy.
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Affiliation(s)
| | - Paolo Minerba
- Department of Internal Medicine and Therapeutics, University of Pavia, Italy
| | - Stiliano Maimaris
- Department of Internal Medicine and Therapeutics, University of Pavia, Italy
| | - Federico Biagi
- Department of Internal Medicine and Therapeutics, University of Pavia, Italy; Istituti Clinici Scientifici Maugeri IRCCS, Gastroenterology Unit of Pavia Institute, Italy.
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Ritter K, Somnuke P, Hu L, Griemert EV, Schäfer MKE. Current state of neuroprotective therapy using antibiotics in human traumatic brain injury and animal models. BMC Neurosci 2024; 25:10. [PMID: 38424488 PMCID: PMC10905838 DOI: 10.1186/s12868-024-00851-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 02/02/2024] [Indexed: 03/02/2024] Open
Abstract
TBI is a leading cause of death and disability in young people and older adults worldwide. There is no gold standard treatment for TBI besides surgical interventions and symptomatic relief. Post-injury infections, such as lower respiratory tract and surgical site infections or meningitis are frequent complications following TBI. Whether the use of preventive and/or symptomatic antibiotic therapy improves patient mortality and outcome is an ongoing matter of debate. In contrast, results from animal models of TBI suggest translational perspectives and support the hypothesis that antibiotics, independent of their anti-microbial activity, alleviate secondary injury and improve neurological outcomes. These beneficial effects were largely attributed to the inhibition of neuroinflammation and neuronal cell death. In this review, we briefly outline current treatment options, including antibiotic therapy, for patients with TBI. We then summarize the therapeutic effects of the most commonly tested antibiotics in TBI animal models, highlight studies identifying molecular targets of antibiotics, and discuss similarities and differences in their mechanistic modes of action.
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Affiliation(s)
- Katharina Ritter
- Department of Anesthesiology, University Medical Center, Johannes Gutenberg-University Mainz, Langenbeckstraße 1 (Bld. 505), Mainz, 55131, Germany
| | - Pawit Somnuke
- Department of Anesthesiology, University Medical Center, Johannes Gutenberg-University Mainz, Langenbeckstraße 1 (Bld. 505), Mainz, 55131, Germany
- Department of Anesthesiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - Lingjiao Hu
- Department of Anesthesiology, University Medical Center, Johannes Gutenberg-University Mainz, Langenbeckstraße 1 (Bld. 505), Mainz, 55131, Germany
- Department of Gastroenterology, Nanxishan Hospital of Guangxi Zhuang Autonomous Region, Guilin, China
| | - Eva-Verena Griemert
- Department of Anesthesiology, University Medical Center, Johannes Gutenberg-University Mainz, Langenbeckstraße 1 (Bld. 505), Mainz, 55131, Germany
| | - Michael K E Schäfer
- Department of Anesthesiology, University Medical Center, Johannes Gutenberg-University Mainz, Langenbeckstraße 1 (Bld. 505), Mainz, 55131, Germany.
- Focus Program Translational Neurosciences (FTN, Johannes Gutenberg-University Mainz, Mainz, Germany.
- Research Center for Immunotherapy, University Medical Center, Johannes Gutenberg- University Mainz, Mainz, Germany.
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21
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Reeves SD, Hartmann AP, Tedder AC, Juang PA, Hofer M, Kollef MH, Micek ST, Betthauser KD. Comparison of Empiric Antibiotic Treatment Regimens for Hospitalized, Non-severe Community-acquired Pneumonia: A Retrospective, Multicenter Cohort Study. Clin Ther 2024:S0149-2918(24)00020-1. [PMID: 38403509 DOI: 10.1016/j.clinthera.2024.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 01/14/2024] [Accepted: 01/31/2024] [Indexed: 02/27/2024]
Abstract
PURPOSE Consensus guidelines for hospitalized, non-severe community-acquired pneumonia (CAP) recommend empiric macrolide + β-lactam or respiratory fluoroquinolone monotherapy in patients with no risk factors for resistant organisms. In patients with allergies or contraindications, doxycycline + β-lactam is a recommended alternative. The purpose of this study was to compare differences in outcomes among guideline-recommended regimens in this population. METHODS This retrospective, multicenter cohort study included patients ≥18 years of age with CAP who received respiratory fluoroquinolone monotherapy, empiric macrolide + β-lactam, or doxycycline + β-lactam. Major exclusion criteria included patients with immunocompromising conditions, requiring vasopressors or invasive mechanical ventilation within 48 hours of admission, and receiving less than 2 days of total antibiotic therapy. The primary outcome was in-hospital mortality. Secondary outcomes included clinical failure, 14- and 30-day hospital readmission, and hospital length of stay. Safety outcomes included incidence of new Clostridioides difficile infection and aortic aneurysm ruptures. FINDINGS Of 4685 included patients, 1722 patients received empiric respiratory fluoroquinolone monotherapy, 159 received empiric doxycycline + β-lactam, and 2804 received empiric macrolide + β-lactam. Incidence of in-hospital mortality was not observed to be significantly different among empiric regimens (doxycycline + β-lactam group: 1.9% vs macrolide + β-lactam: 1.9% vs respiratory fluoroquinolone monotherapy: 1.5%, P = 0.588). No secondary outcomes were observed to differ significantly among groups. IMPLICATIONS We observed no differences in clinical or safety outcomes among three guideline-recommended empiric CAP regimens. Empiric doxycycline + β-lactam may be a safe empiric regimen for hospitalized CAP patients with non-severe CAP, although additional research is needed to corroborate these observations with larger samples.
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Affiliation(s)
- Sidney D Reeves
- Department of Pharmacy, Lt. Col. Luke Weathers Jr. VA Medical Center, Memphis, Tennessee
| | - Aaron P Hartmann
- Department of Pharmacy Practice, Barnes-Jewish Hospital, St. Louis, Missouri
| | - Amanda C Tedder
- Department of Pharmacy Practice, Barnes-Jewish Hospital, St. Louis, Missouri
| | - Paul A Juang
- Department of Pharmacy Practice, University of Health Sciences and Pharmacy, St. Louis, Missouri
| | - Mikaela Hofer
- Department of Pharmacy, Mayo Clinic Rochester, Rochester, Minnesota
| | - Marin H Kollef
- Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Scott T Micek
- Department of Pharmacy Practice, University of Health Sciences and Pharmacy, St. Louis, Missouri; Center for Health Outcomes Research and Education, University of Health Sciences and Pharmacy, St. Louis, Missouri.
| | - Kevin D Betthauser
- Department of Pharmacy Practice, Barnes-Jewish Hospital, St. Louis, Missouri
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22
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Plymoth M, Lundquist R, Nystedt A, Sjöstedt A, Gustafsson TN. Targeting Tularemia: Clinical, Laboratory, and Treatment Outcomes from an 11-year Retrospective Observational Cohort in Northern Sweden. Clin Infect Dis 2024:ciae098. [PMID: 38393822 DOI: 10.1093/cid/ciae098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 01/25/2024] [Accepted: 02/21/2024] [Indexed: 02/25/2024] Open
Abstract
BACKGROUND Tularemia is an important re-emerging disease with a multimodal transmission-pattern. Treatment outcomes of current recommended antibiotic regimens (including ciprofloxacin and doxycycline) remain unclear. In this retrospective cohort study, we report clinical, laboratory, geographical, and treatment outcomes of laboratory-confirmed tularemia cases over an 11-year period in Northern Sweden. METHODS Data from reported tularemia cases (aged >10 years at time of study) in Norrbotten county between 2011-2021 were collected through review of electronic medical records and participant questionnaires; with 415 out of 784 accepting participation (52.9%). Of these, 327 were laboratory-confirmed cases (serology and/or PCR). A multivariable logistic regression model was used to investigate variables associated with re-treatment. RESULTS Median age of participants was 54 years (IQR 41.5-65) and 49.2% were female. While ulceroglandular tularemia was the predominant form (n=215, 65.7%), there were several cases of pulmonary tularemia (n=40; 12.2%). Inflammatory markers were largely non-specific, with monocytosis frequently observed (n=36/75; 48%). Tularemia was often misdiagnosed upon presentation (n=158, 48.3%), with 65 (19.9%) receiving initial inappropriate antibiotics, and 102 (31.2%) re-treated. Persistent lymphadenopathy was infrequent (n=22, 6.7%), with 10 undergoing surgical interventions. In multivariable analysis of variables associated with re-treatment, we highlight differences in time until receiving appropriate antibiotics (8 [IQR 3.25-20.75] vs. 7 [IQR 4-11.25] days; adjusted p=0.076), and doxycycline-based treatment regimen (vs. ciprofloxacin; adjusted p=0.084), although not significant after correction for multiple comparisons. CONCLUSION We comprehensively summarize clinical, laboratory, and treatment outcomes of type B tularemia. Targeting tularemia requires clinical awareness, early diagnosis and timely commencement of treatment for an appropriate duration.
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Affiliation(s)
- Martin Plymoth
- Department of Clinical Microbiology, Sunderby Research Unit, Umeå University, Umeå, Sweden
- Westmead Hospital, Sydney, New South Wales, Australia
| | - Robert Lundquist
- Department of Public Health and Clinical Medicine, Sunderby Research Unit, Umeå University, Umeå, Sweden
| | - Anders Nystedt
- Department of Communicable Disease Control, County Counsel of Norrbotten, Luleå, Sweden
| | - Anders Sjöstedt
- Department of Clinical Microbiology, Umeå University, Umeå, Sweden
| | - Tomas N Gustafsson
- Department of Clinical Microbiology, Sunderby Research Unit, Umeå University, Umeå, Sweden
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23
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Chaves-Filho AJM, Soares MVR, Jucá PM, Oliveira TDQ, Clemente DCDS, Monteiro CEDS, Silva FGO, de Aquino PEA, Macedo DS. Doxycycline reversal of amphetamine-induced mania-like behavior is related to adjusting brain monoamine abnormalities and antioxidant effects in primary hippocampal neurons. Naunyn Schmiedebergs Arch Pharmacol 2024:10.1007/s00210-024-03009-7. [PMID: 38386042 DOI: 10.1007/s00210-024-03009-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 02/12/2024] [Indexed: 02/23/2024]
Abstract
Mania is associated with disturbed dopaminergic transmission in frontotemporal regions. D-amphetamine (AMPH) causes increased extracellular DA levels, considered an acknowledged mania model in rodents. Doxycycline (DOXY) is a second-generation tetracycline with promising neuroprotective properties. Here, we tested the hypothesis that DOXY alone or combined with Lithium (Li) could reverse AMPH-induced mania-like behavioral alterations in mice by the modulation of monoamine levels in brain areas related to mood regulation, as well as cytoprotective and antioxidant effects in hippocampal neurons. Male Swiss mice received AMPH or saline intraperitoneal (IP) injections for 14 days. Between days 8-14, mice receive further IP doses of DOXY, Li, or their combination. For in vitro studies, we exposed hippocampal neurons to DOXY in the presence or absence of AMPH. DOXY alone or combined with Li reversed AMPH-induced risk-taking behavior and hyperlocomotion. DOXY also reversed AMPH-induced hippocampal and striatal hyperdopaminergia. In AMPH-exposed hippocampal neurons, DOXY alone and combined with Li presented cytoprotective and antioxidant effects, while DOXY+Li also increased the expression of phospho-Ser133-CREB. Our results add novel evidence for DOXY's ability to reverse mania-like features while revealing that antidopaminergic activity in some brain areas, such as the hippocampus and striatum, as well as hippocampal cytoprotective effects may account for this drug's antimanic action. This study provides additional rationale for designing clinical trials investigating its potential as a mood stabilizer agent.
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Affiliation(s)
- Adriano José Maia Chaves-Filho
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Rua Cel. Nunes de Melo 1000, Fortaleza, CE, 60431-270, Brazil
- Division of Medical Sciences, University of Victoria, Victoria, British Columbia, Canada
| | - Michele Verde-Ramo Soares
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Rua Cel. Nunes de Melo 1000, Fortaleza, CE, 60431-270, Brazil
| | - Paloma Marinho Jucá
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Rua Cel. Nunes de Melo 1000, Fortaleza, CE, 60431-270, Brazil
| | - Tatiana de Queiroz Oliveira
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Rua Cel. Nunes de Melo 1000, Fortaleza, CE, 60431-270, Brazil
| | - Dino Cesar da Silva Clemente
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Rua Cel. Nunes de Melo 1000, Fortaleza, CE, 60431-270, Brazil
| | - Carlos Eduardo da Silva Monteiro
- Laboratory of Physiopharmacology Study of Gastrointestinal Tract, Department of Physiology and Pharmacology, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Francisca Géssica Oliveira Silva
- Laboratory of Physiopharmacology Study of Gastrointestinal Tract, Department of Physiology and Pharmacology, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Pedro Everson Alexandre de Aquino
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Rua Cel. Nunes de Melo 1000, Fortaleza, CE, 60431-270, Brazil
| | - Danielle S Macedo
- Neuropharmacology Laboratory, Drug Research and Development Center, Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Rua Cel. Nunes de Melo 1000, Fortaleza, CE, 60431-270, Brazil.
- National Institute for Translational Medicine (INCT-TM, CNPq), São Paulo, Brazil.
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24
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Roca Mora MM, Cunha LM, Godoi A, Donadon I, Clemente M, Marcolin P, Valenzuela S A, Wormser GP. Shorter versus longer duration of antimicrobial therapy for early Lyme disease: A systematic review and meta-analysis. Diagn Microbiol Infect Dis 2024; 109:116215. [PMID: 38493509 DOI: 10.1016/j.diagmicrobio.2024.116215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 02/13/2024] [Accepted: 02/13/2024] [Indexed: 03/19/2024]
Abstract
BACKGROUND Antibiotic therapy for patients with early Lyme disease is necessary to prevent later-stage Lyme disease complications. This systematic review and meta-analysis compares shorter versus longer antibiotic regimens in treating early Lyme disease. METHODS A systematic search of PubMed, Embase, and Cochrane Central Register of Controlled Trials was conducted up to November 2023. We examined treatment failure, complete response, and photosensitivity. Short vs. long therapy was defined as ≤10 days vs. >10 days. Subgroup analyses included antibiotic type and varying treatment durations. Analysis utilized RStudio 4.1.2. PROSPERO registration: CRD42023423876. RESULTS Seven studies, encompassing 1,462 patients, were analyzed. No significant differences in treatment failure, 12-month complete response, final visit complete response were found between short and long durations of antibiotic therapy. Subgroup and sensitivity analyses corroborated these findings. CONCLUSION Shorter and longer antibiotic regimens for early Lyme disease show similar efficacy, highlighting the potential of ≤10-day courses, as effective treatment options.
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Affiliation(s)
| | | | - Amanda Godoi
- Cardiff School of Medicine, Wales, United Kingdom
| | | | | | | | - Andres Valenzuela S
- Pontificia Universidad Católica, Chile; McMaster University, Hamilton, Canada
| | - Gary P Wormser
- Department of Medicine, New York Medical College, New York, United States
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25
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Wehrli JM, Xia Y, Abivardi A, Kleim B, Bach DR. The impact of doxycycline on human contextual fear memory. Psychopharmacology (Berl) 2024:10.1007/s00213-024-06540-w. [PMID: 38334789 DOI: 10.1007/s00213-024-06540-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 01/20/2024] [Indexed: 02/10/2024]
Abstract
RATIONALE Previous work identified an attenuating effect of the matrix metalloproteinase (MMP) inhibitor doxycycline on fear memory consolidation. This may present a new mechanistic approach for the prevention of trauma-related disorders. However, so far, this has only been unambiguously demonstrated in a cued delay fear conditioning paradigm, in which a simple geometric cue predicted a temporally overlapping aversive outcome. This form of learning is mainly amygdala dependent. Psychological trauma often involves the encoding of contextual cues, which putatively necessitates partly different neural circuits including the hippocampus. The role of MMP signalling in the underlying neural pathways in humans is unknown. METHODS Here, we investigated the effect of doxycycline on configural fear conditioning in a double-blind placebo-controlled randomised trial with 100 (50 females) healthy human participants. RESULTS Our results show that participants successfully learned and retained, after 1 week, the context-shock association in both groups. We find no group difference in fear memory retention in either of our pre-registered outcome measures, startle eye-blink responses and pupil dilation. Contrary to expectations, we identified elevated fear-potentiated startle in the doxycycline group early in the recall test, compared to the placebo group. CONCLUSION Our results suggest that doxycycline does not substantially attenuate contextual fear memory. This might limit its potential for clinical application.
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Affiliation(s)
- Jelena M Wehrli
- Department of Psychiatry, Psychotherapy, and Psychosomatics, Psychiatric Hospital, University of Zurich, Lenggstrasse 31, 8008, Zurich, Switzerland
| | - Yanfang Xia
- Department of Psychiatry, Psychotherapy, and Psychosomatics, Psychiatric Hospital, University of Zurich, Lenggstrasse 31, 8008, Zurich, Switzerland
| | - Aslan Abivardi
- Department of Psychiatry, Psychotherapy, and Psychosomatics, Psychiatric Hospital, University of Zurich, Lenggstrasse 31, 8008, Zurich, Switzerland
- Wellcome Centre for Integrative Neuroimaging, Nuffield Department of Clinical Neurosciences, University of Oxford, FMRIB Building, John Radcliffe Hospital, Headington, Oxford, OX3 9DU, UK
| | - Birgit Kleim
- Department of Psychiatry, Psychotherapy, and Psychosomatics, Psychiatric Hospital, University of Zurich, Lenggstrasse 31, 8008, Zurich, Switzerland
| | - Dominik R Bach
- Department of Psychiatry, Psychotherapy, and Psychosomatics, Psychiatric Hospital, University of Zurich, Lenggstrasse 31, 8008, Zurich, Switzerland.
- Wellcome Centre for Human Neuroimaging, University College London, Russell Square House, 10-12 Russell Square, London, WC1B 5EH, UK.
- Hertz Chair for Artificial Intelligence and Neuroscience, Transdisciplinary Research Area Life & Health , University of Bonn, Am Probsthof 49, 53121, Bonn, Germany.
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26
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Guimarães MJ, Lopes AG, Vieira AP. Morbihan Disease: A Diagnostic and Therapeutic Challenge. ACTA MEDICA PORT 2024; 37:145-146. [PMID: 37381776 DOI: 10.20344/amp.19904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 05/26/2023] [Indexed: 06/30/2023]
Affiliation(s)
- Maria J Guimarães
- Serviço de Dermatologia e Venereologia. Hospital de Braga. Braga. Portugal
| | - Ana Gabriela Lopes
- Serviço de Dermatologia e Venereologia. Hospital de Braga. Braga. Portugal
| | - Ana Paula Vieira
- Serviço de Dermatologia e Venereologia. Hospital de Braga. Braga. Portugal
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27
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Bížová B, Procházka P, Nyčová E, Bořil P, Kubele J, Poláková A, Zemanová Z, Unemo M, Rob F. Single-dose cefixime 800 mg plus doxycycline 100 mg twice a day for 7 days compared with single-dose ceftriaxone 1 g plus single-dose azithromycin 2 g for treatment of urogenital, rectal, and pharyngeal gonorrhoea: a randomised clinical trial. Clin Microbiol Infect 2024; 30:211-215. [PMID: 37981059 DOI: 10.1016/j.cmi.2023.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 10/25/2023] [Accepted: 11/11/2023] [Indexed: 11/21/2023]
Abstract
OBJECTIVES To evaluate the efficacy and tolerability of a single dose of oral cefixime 800 mg plus oral doxycycline 100 mg twice a day for 7 days, compared with a recommended single dose of ceftriaxone plus single dose of oral azithromycin, for treatment of uncomplicated urogenital, rectal, or pharyngeal gonorrhoea. METHODS A noninferiority, open-label, multicentre randomized controlled trial was conducted in Prague, Czech Republic. Some 161 patients, 18-65 years of age diagnosed with uncomplicated urogenital, rectal, or pharyngeal gonorrhoea by nucleic acid amplification test (NAAT) were randomized to treatment with single dose of cefixime 800 mg plus doxycycline 100 mg twice a day for 1 week or a single dose of ceftriaxone 1 g intramuscularly plus single dose of azithromycin 2 g. The primary outcome was the number of participants with negative culture and NAAT at 1 week and 3 weeks, respectively, after treatment initiation. RESULTS In all, 161 patients were randomized and 152 were included in per-protocol analyses. All 76 (100%; 95% CI, 0.95-1.00) patients treated with ceftriaxone plus azithromycin achieved negative cultures and NAAT after treatment. In the cefixime plus doxycycline arm at week 1, culture was negative in all 76 (100%) patients; at week 3, culture was negative in 70 of the 76 patients (92%; 95% CI, 0.84-0.97) and NAAT negative in 66 of the 76 patients (87%; 95% CI, 0.77-0.94). At week 3, culture and NAAT were negative in 65 of the 76 patients (86%; 95% CI, 0.76-0.93). Per-protocol risk difference was 14.5%; 95% CI, 6.56-22.38. All treatment failures observed in the cefixime arm were pharyngeal gonorrhoea cases. DISCUSSION The combination of cefixime and doxycycline did not achieve noninferiority to ceftriaxone and azithromycin for treatment of gonorrhoea when including pharyngeal gonorrhoea. It did, however, show high efficacy for urogenital and rectal gonorrhoea.
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Affiliation(s)
- Beatrice Bížová
- Dermatovenereology Department, Second Faculty of Medicine, Charles University, University Hospital Bulovka, Prague, Czech Republic
| | | | - Elka Nyčová
- Department of Microbiology, University Hospital Bulovka, Prague, Czech Republic
| | - Petr Bořil
- Clinical Laboratory, Medicentrum Beroun, Beroun, Czech Republic
| | - Jan Kubele
- Clinical Microbiology and ATB Centre, Na Homolce Hospital, Prague, Czech Republic
| | - Anna Poláková
- Department of Microbiology, University Hospital Bulovka, Prague, Czech Republic
| | - Zuzana Zemanová
- Clinical Microbiology and ATB Centre, Na Homolce Hospital, Prague, Czech Republic
| | - Magnus Unemo
- World Health Organization Collaborating Centre for Gonorrhoea and Other STIs, Department of Laboratory Medicine, Microbiology, Faculty of Medicine of Health, Örebro University, Örebro, Sweden; Institute for Global Health, University College London, London, United Kingdom
| | - Filip Rob
- Dermatovenereology Department, Second Faculty of Medicine, Charles University, University Hospital Bulovka, Prague, Czech Republic.
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28
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Stupica D, Collinet-Adler S, Kejžar N, Velušček M, Boršič K. Which trial do we need? Treatment of multiple erythema migrans with doxycycline for 7 days versus 14 days. Clin Microbiol Infect 2024; 30:159-161. [PMID: 37353079 DOI: 10.1016/j.cmi.2023.06.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 06/13/2023] [Accepted: 06/19/2023] [Indexed: 06/25/2023]
Affiliation(s)
- Daša Stupica
- Department of Infectious Diseases, Clinical Centre Ljubljana, Ljubljana, Slovenia; Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.
| | - Stefan Collinet-Adler
- Department of Infectious Diseases, Park Nicollet/Health Partners, Methodist Hospital, Saint Louis Park, MN, USA
| | - Nataša Kejžar
- Institute for Biostatistics and Medical Informatics, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Maša Velušček
- Department of Infectious Diseases, Clinical Centre Ljubljana, Ljubljana, Slovenia
| | - Katarina Boršič
- Department of Infectious Diseases, Clinical Centre Ljubljana, Ljubljana, Slovenia
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29
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Morsy SAA, Fathelbab MH, El-Sayed NS, El-Habashy SE, Aly RG, Harby SA. Doxycycline-Loaded Calcium Phosphate Nanoparticles with a Pectin Coat Can Ameliorate Lipopolysaccharide-Induced Neuroinflammation Via Enhancing AMPK. J Neuroimmune Pharmacol 2024; 19:2. [PMID: 38236457 PMCID: PMC10796490 DOI: 10.1007/s11481-024-10099-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 12/06/2023] [Indexed: 01/19/2024]
Abstract
Neuroinflammation occurs in response to different injurious triggers to limit their hazardous effects. However, failure to stop this process can end in multiple neurological diseases. Doxycycline (DX) is a tetracycline, with potential antioxidant and anti-inflammatory properties. The current study tested the effects of free DX, DX-loaded calcium phosphate (DX@CaP), and pectin-coated DX@CaP (Pec/DX@CaP) nanoparticles on the lipopolysaccharide (LPS)-induced neuroinflammation in mice and to identify the role of adenosine monophosphate-activated protein kinase (AMPK) in this effect. The present study was conducted on 48 mice, divided into 6 groups, eight mice each. Group 1 (normal control), Group 2 (blank nanoparticles-treated), Group 3 (LPS (untreated)), Groups 4, 5, and 6 received LPS, then Group 4 received free DX, Group 5 received DX-loaded calcium phosphate nanoparticles (DX@CaP), and Group 6 received DX-loaded calcium phosphate nanoparticles with a pectin coat (Pec/DX@CaP). At the end of the experimentation period, behavioral tests were carried out. Then, mice were sacrificed, and brain tissue was extracted and used for histological examination, and assessment of interleukin-6 positive cells in different brain areas, in addition to biochemical measurement of SOD activity, TLR-4, AMPK and Nrf2. LPS can induce prominent neuroinflammation. Treatment with (Pec/DX@CaP) can reverse most behavioral, histopathological, and biochemical changes caused by LPS. The findings of the current study suggest that (Pec/DX@CaP) exerts a significant reverse of LPS-induced neuroinflammation by enhancing SOD activity, AMPK, and Nrf2 expression, in addition to suppression of TLR-4.
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Affiliation(s)
| | - Mona Hassan Fathelbab
- Medical Biochemistry Department, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Norhan S El-Sayed
- Medical Physiology Department, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Salma E El-Habashy
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Rania G Aly
- Pathology Department, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Sahar A Harby
- Clinical Pharmacology Department, Faculty of Medicine, Alexandria University, Alexandria, Egypt.
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30
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Sales AJ, Gobira PH, Pedrazzi JFC, Silveira JR, Del Bel E, Gomes FV, Guimarães FS. Doxycycline diminishes the rewarding and psychomotor effects induced by morphine and cocaine. Prog Neuropsychopharmacol Biol Psychiatry 2024; 128:110870. [PMID: 37793480 DOI: 10.1016/j.pnpbp.2023.110870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 09/22/2023] [Accepted: 10/01/2023] [Indexed: 10/06/2023]
Abstract
Few pharmacological treatments are available for substance use disorders (SUDs). Neuroplastic changes induced by increased activity of metalloproteinase (MMP) enzymes in the brain are among the several molecular processes that may play a role in drug addiction. Doxycycline, a widely used tetracycline that crosses the blood-brain barrier, inhibits MMPs and has been investigated as a potential treatment for brain disorders. However, the effects of doxycycline on rewarding properties of drugs of abuse remain not investigated. Here, we tested the effects of low doses of doxycycline on the rewarding effects of morphine and cocaine in conditioned place preference (CPP) and locomotor sensitization in mice. Acute doxycycline (10 mg/kg) attenuated the cocaine-induced CPP and hyperlocomotion. Repeated doxycycline (10 mg/kg) blocked hyperlocomotion and attenuated the locomotor sensitization induced by cocaine. It also decreased the rewarding effects in the CPP induced by morphine and cocaine. Our results suggest that doxycycline could be repurposed for treating SUDs.
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Affiliation(s)
- Amanda J Sales
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Pedro H Gobira
- Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - João F C Pedrazzi
- Departament of Neuroscience, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - João R Silveira
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Elaine Del Bel
- Departament of Phisiology, Faculty of Odontology of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Felipe V Gomes
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Francisco S Guimarães
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil.
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Zhang Y, Fan X, Sun X, Yang X, Li Z, Yang Z, Dong C. Synthesis of oil-soluble carbon dots via pyrolysis and their diverse applications in doxycycline detection, fluorescent ink and film. Spectrochim Acta A Mol Biomol Spectrosc 2024; 304:123406. [PMID: 37722160 DOI: 10.1016/j.saa.2023.123406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 08/25/2023] [Accepted: 09/12/2023] [Indexed: 09/20/2023]
Abstract
The overuse of doxycycline poses a risk for ecological environment. Advanced materials such as anti-counterfeiting and photovoltaic materials are urgently needed to develop innovative strategies for exploiting solar cells and protecting valuable products. Herein, oil-soluble CDs (o-CDs) were successfully fabricated from citric acid, tris-base and oleylamine as precursors via pyrolysis method. The o-CDs with uniform size distribution exhibited a high quantum yield of 0.48 and excellent photostability. The fluorescence of o-CDs was rapidly quenched by doxycycline at room temperature without further modification. Optimal conditions were selected to construct a fluorescence probe with high selectivity and good sensitivity to detect doxycycline. Interestingly, the probe achieved two linear ranges of 0.85--16.7 µM and 16.7--33.4 µM with a low detection limit of 0.26 µM. Furthermore, inner filter effect (IFE) was dominated in the process in which doxycycline interact with the oxygen-containing groups of o-CDs. This sensing platform has been further successfully applied to the detection of doxycycline in milk with recovery rates of 96.8%- 102.7% and relative standard deviations of 0.98%- 1.02%, suggesting that the novel probe has the potential to be applied in real samples. Moreover, o-CDs directly serve as fluorescence ink and work as fluorescence film using PVA as matrix because of strong fluorescence in the solid state, indicating that they have potential applications in anti-counterfeiting and photovoltaic materials. This is the first report that oil-soluble CDs via pyrolysis is applied in the detection of doxycycline in milk. Importantly, this work provides efficient strategies for the construction of anti-counterfeiting and photovoltaic materials.
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Affiliation(s)
- Yuexia Zhang
- Institute of Environmental Science, Shanxi University, Taiyuan 030006, China
| | - Xiaopeng Fan
- Institute of Environmental Science, Shanxi University, Taiyuan 030006, China
| | - Xuansen Sun
- Institute of Environmental Science, Shanxi University, Taiyuan 030006, China
| | - Xintong Yang
- Institute of Environmental Science, Shanxi University, Taiyuan 030006, China
| | - Zhongping Li
- Institute of Environmental Science, Shanxi University, Taiyuan 030006, China
| | - Zhenhua Yang
- Institute of Environmental Science, Shanxi University, Taiyuan 030006, China.
| | - Chuan Dong
- Institute of Environmental Science, Shanxi University, Taiyuan 030006, China.
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Koller EJ, Wood CA, Lai Z, Borgenheimer E, Hoffman KL, Jankowsky JL. Doxycycline for transgene control disrupts gut microbiome diversity without compromising acute neuroinflammatory response. J Neuroinflammation 2024; 21:11. [PMID: 38178148 PMCID: PMC10765643 DOI: 10.1186/s12974-023-03004-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 12/21/2023] [Indexed: 01/06/2024] Open
Abstract
The tetracycline transactivator (tTA) system provides controllable transgene expression through oral administration of the broad-spectrum antibiotic doxycycline. Antibiotic treatment for transgene control in mouse models of disease might have undesirable systemic effects resulting from changes in the gut microbiome. Here we assessed the impact of doxycycline on gut microbiome diversity in a tTA-controlled model of Alzheimer's disease and then examined neuroimmune effects of these microbiome alterations following acute LPS challenge. We show that doxycycline decreased microbiome diversity in both transgenic and wild-type mice and that these changes persisted long after drug withdrawal. Despite the change in microbiome composition, doxycycline treatment had minimal effect on basal transcriptional signatures of inflammation the brain or on the neuroimmune response to LPS challenge. Our findings suggest that central neuroimmune responses may be less affected by doxycycline at doses needed for transgene control than by antibiotic cocktails at doses used for experimental microbiome disruption.
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Affiliation(s)
- Emily J Koller
- Department of Neuroscience, Baylor College of Medicine, One Baylor Plaza, Mail Stop BCM295, Houston, TX, 77030, USA
| | - Caleb A Wood
- Department of Neuroscience, Baylor College of Medicine, One Baylor Plaza, Mail Stop BCM295, Houston, TX, 77030, USA
| | - Zoe Lai
- Department of Neuroscience, Baylor College of Medicine, One Baylor Plaza, Mail Stop BCM295, Houston, TX, 77030, USA
| | - Ella Borgenheimer
- Department of Neuroscience, Baylor College of Medicine, One Baylor Plaza, Mail Stop BCM295, Houston, TX, 77030, USA
| | - Kristi L Hoffman
- Alkek Center for Metagenomics and Microbiome Research, Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Joanna L Jankowsky
- Department of Neuroscience, Baylor College of Medicine, One Baylor Plaza, Mail Stop BCM295, Houston, TX, 77030, USA.
- Departments of Neurology, Neurosurgery, and Molecular and Cellular Biology, Huffington Center On Aging, Baylor College of Medicine, Houston, TX, 77030, USA.
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Chato-Astrain J, Toledano-Osorio M, Alaminos M, Toledano M, Sanz M, Osorio R. Effect of functionalized titanium particles with dexamethasone-loaded nanospheres on macrophage polarization and activity. Dent Mater 2024; 40:66-79. [PMID: 37914549 DOI: 10.1016/j.dental.2023.10.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 10/09/2023] [Accepted: 10/25/2023] [Indexed: 11/03/2023]
Abstract
OBJECTIVE The aim of this study was to determine the effect of titanium micro particles (TiP) previously functionalized with nanoparticles doped with dexamethasone (Dex) and doxycycline (Dox), on macrophage polarization and activity. METHODS Macrophages RAW264.7 were cultured in the presence TiP loaded with dexamethasone -NPs (Dex)- and doxycycline -NPs (Dox)-, and as control, TiP with or without doped NPs. Cells were tested with and without previous bacterial lipopolysaccharide endotoxin (LPS) stimulation. Their morphology, proliferation, cytotoxicity, phenotypic change, and cytokines release were assessed by LIVE/DEAD, DNA release, metabolic activity, brightfield and scanning electron microscopy. The test Kruskall-Wallis was used for comparisons, while the cytokine expression profiles were examined by hierarchical clustering (p < 0.05). RESULTS Upon exposure with TiP macrophages were activated and polarized to M1, but without depicting cytotoxic effects. The particles were phagocytised, and vacuolized. When exposed to functionalised TiP with NPs(Dex) and NPs(Dox), the ratio M1/M2 was up to forty times lower compared to TiP alone. When exposed to LPS, TiP reduced cell viability in half. Functionalised TiP with NPs(Dex) inhibited the cytokine release exerted by TiP on macrophages. When macrophages were exposed to functionalised TiPs with NPs(Dex) with and without LPS, the effect of TiP on cytokine secretion was inhibited. SIGNIFICANCE Functionalised TiPs with NPs(Dex) and NPs(Dox) may potentially have beneficial effects on modulating titanium and LPS-related inflammatory reactions.
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Affiliation(s)
- Jesús Chato-Astrain
- Tissue Engineering Group, Department of Histology, Faculty of Medicine, University of Granada, 18016 Granada, Spain; Instituto de Investigación Biosanitaria IBS. Granada, Granada, Spain
| | - Manuel Toledano-Osorio
- Dental School, Faculty of Dentistry, University of Granada, Colegio Máximo de Cartuja s/n, Granada 18071, Spain..
| | - Miguel Alaminos
- Tissue Engineering Group, Department of Histology, Faculty of Medicine, University of Granada, 18016 Granada, Spain; Instituto de Investigación Biosanitaria IBS. Granada, Granada, Spain
| | - Manuel Toledano
- Instituto de Investigación Biosanitaria IBS. Granada, Granada, Spain; Dental School, Faculty of Dentistry, University of Granada, Colegio Máximo de Cartuja s/n, Granada 18071, Spain
| | - Mariano Sanz
- ETEP (Etiology and Therapy of Periodontal and Peri-Implant Diseases) Research Group. University Complutense of Madrid, Madrid, Spain
| | - Raquel Osorio
- Instituto de Investigación Biosanitaria IBS. Granada, Granada, Spain; Dental School, Faculty of Dentistry, University of Granada, Colegio Máximo de Cartuja s/n, Granada 18071, Spain
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Liu S, Tan M, Cai J, Li C, Yang M, Sun X, He B. Ribosome-targeting antibiotic control NLRP3-mediated inflammation by inhibiting mitochondrial DNA synthesis. Free Radic Biol Med 2024; 210:75-84. [PMID: 37992790 DOI: 10.1016/j.freeradbiomed.2023.11.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 11/08/2023] [Accepted: 11/16/2023] [Indexed: 11/24/2023]
Abstract
While antibiotics are designed to target bacteria specifically, most are known to affect host cell physiology. Certain classes of antibiotics have been reported to have immunosuppressive effects, but the underlying mechanisms remain elusive. Here, we show that doxycycline, a ribosomal-targeting antibiotic, effectively inhibited both mitochondrial translation and nucleotide-binding domain and leucine-rich repeat-containing protein 3 (NLRP3) inflammasome-mediated caspase-1 activation and interleukin-1β (IL-1β) production in bone-marrow-derived macrophages (BMDMs). In addition, knockdown of mitochondrial methionyl-tRNA formyltransferase (Mtfmt), which is rate limiting for mitochondrial translation, also resulted in the inhibition of NLRP3 inflammasome-mediated caspase-1 activation and IL-1β secretion. Furthermore, both doxycycline treatment and Mtfmt knockdown blocked the synthesis of mitochondrial DNA (mtDNA) and the generation of oxidized mtDNA (Ox-mtDNA), which serves as a ligand for NLRP3 inflammasome activation. In addition, in vivo results indicated that doxycycline mitigated NLRP3 inflammasome-dependent inflammation, including lipopolysaccharide-induced systemic inflammation and endometritis. Taken together, the results unveil the antibiotics targeting the mitoribosome have the ability to mitigate NLRP3 inflammasome activation by inhibiting mitochondrial translation and mtDNA synthesis thus opening up new possibilities for the treatment of NLRP3-related diseases.
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Affiliation(s)
- Suyuan Liu
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Meiling Tan
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Jiangxue Cai
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Chenxuan Li
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Miaoxin Yang
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Xiaoxiao Sun
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, PR China
| | - Bin He
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, PR China; MOE Joint International Research Laboratory of Animal Health & Food Safety, Nanjing Agricultural University, Nanjing, 210095, PR China.
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Rieder JC, Steffensen N, Imker R, Lassnig S, de Buhr N. The effect of doxycycline on canine neutrophil functions. Vet Immunol Immunopathol 2024; 267:110701. [PMID: 38147695 DOI: 10.1016/j.vetimm.2023.110701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 12/04/2023] [Accepted: 12/08/2023] [Indexed: 12/28/2023]
Abstract
Doxycycline is a broad-spectrum tetracycline-class antibiotic that is frequently used to treat bacterial infections. Its use has also been described in immune-mediated diseases due to its immunomodulatory properties. The aim of this study was to evaluate the immunomodulatory effect of doxycycline on canine neutrophil functions. Therefore, the release of reactive oxygen species (ROS) and the formation of neutrophil extracellular traps (NETs) were determined after incubation of canine PMNs with doxycycline in three different concentrations (4 µg/mL, 20 µg/mL and 200 µg/mL) for one and three hours, respectively. Additionally, a neutrophil killing assay with a doxycycline-resistant Staphylococcus aureus was performed to determine the bactericidal effect of doxycycline treated PMNs in presence of plasma. Doxycycline significantly diminished the production of ROS. However, doxycycline concentrations of 4 µg/mL and 20 µg/mL significantly induced NETs. A synergistic bacteriostatic effect of PMNs and doxycycline on a doxycycline-resistant Staphylococcus aureus isolate was detectable. However, already PMNs and especially doxycycline alone inhibited the growth. In summary, doxycycline showed a concentration-dependent immunomodulatory property in canine PMNs with a reduced ROS production and increased NET-induction. This immunomodulatory effect resulted in a slightly increased elimination of a doxycycline-resistant Staphylococcus aureus by the doxycycline plasma concentrations achieved in dogs.
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Affiliation(s)
- Johanna C Rieder
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover Foundation, Bünteweg 9, 30559 Hannover, Germany.
| | - Nicole Steffensen
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover Foundation, Bünteweg 9, 30559 Hannover, Germany
| | - Rabea Imker
- Institute of Biochemistry, University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, 30559 Hannover, Germany; Research Center for Emerging Infections and Zoonoses (RIZ), Bünteweg 17, 30559 Hannover, Germany
| | - Simon Lassnig
- Institute of Biochemistry, University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, 30559 Hannover, Germany; Research Center for Emerging Infections and Zoonoses (RIZ), Bünteweg 17, 30559 Hannover, Germany
| | - Nicole de Buhr
- Institute of Biochemistry, University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, 30559 Hannover, Germany; Research Center for Emerging Infections and Zoonoses (RIZ), Bünteweg 17, 30559 Hannover, Germany.
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Miyata S, Tsuda M, Mitsui S. Overexpression of Motopsin, an Extracellular Serine Protease Related to Intellectual Disability, Promotes Adult Neurogenesis and Neuronal Responsiveness in the Dentate Gyrus. Mol Neurobiol 2023:10.1007/s12035-023-03890-y. [PMID: 38153682 DOI: 10.1007/s12035-023-03890-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 12/18/2023] [Indexed: 12/29/2023]
Abstract
Motopsin, a serine protease encoded by PRSS12, is secreted by neuronal cells into the synaptic clefts in an activity-dependent manner, where it induces synaptogenesis by modulating Na+/K+-ATPase activity. In humans, motopsin deficiency leads to severe intellectual disability and, in mice, it disturbs spatial memory and social behavior. In this study, we investigated mice that overexpressed motopsin in the forebrain using the Tet-Off system (DTG-OE mice). The elevated agrin cleavage or the reduced Na+/K+-ATPase activity was not detected. However, motopsin overexpression led to a reduction in spine density in hippocampal CA1 basal dendrites. While motopsin overexpression decreased the ratio of mature mushroom spines in the DG, it increased the ratio of immature thin spines in CA1 apical dendrites. Female DTG-OE mice showed elevated locomotor activity in their home cages. DTG-OE mice showed aberrant behaviors, such as delayed latency to the target hole in the Barnes maze test and prolonged duration of sniffing objects in the novel object recognition test (NOR), although they retained memory comparable to that of TRE-motopsin littermates, which normally express motopsin. After NOR, c-Fos-positive cells increased in the dentate gyrus (DG) of DTG-OE mice compared with that of DTG-SO littermates, in which motopsin overexpression was suppressed by the administration of doxycycline, and TRE-motopsin littermates. Notably, the numbers of doublecortin- and 5-bromo-2'-deoxyuridine-labeled cells significantly increased in the DG of DTG-OE mice, suggesting increased adult neurogenesis. Importantly, our results revealed a new function in addition to modulating neuronal responsiveness and spine morphology in the DG: the regulation of neurogenesis.
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Affiliation(s)
- Shiori Miyata
- Department of Rehabilitation Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa, Maebashi, Gunma, 371-8514, Japan
| | - Masayuki Tsuda
- Division of Laboratory Animal Science, Science Research Center, Kochi Medical School, Kochi University, Oko-cho, Nankoku, Kochi, 783-8505, Japan
| | - Shinichi Mitsui
- Department of Rehabilitation Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa, Maebashi, Gunma, 371-8514, Japan.
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Zhang M, Song G, Zheng H, Pathakumari B, Liu W, Liang G. In vitro combination with doxycycline plus antifungals against clinical Mucorales pathogens. Braz J Microbiol 2023; 54:2597-2602. [PMID: 37934403 PMCID: PMC10689593 DOI: 10.1007/s42770-023-01167-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 10/19/2023] [Indexed: 11/08/2023] Open
Abstract
PURPOSE Since systematic antifungals for mucormycosis showed variable MICs depending on strains, effective and safe antifungal therapy was still needed. This study is aimed to evaluate the in vitro activity of doxycycline combined with antifungal therapy against dominant Mucorales pathogens. METHODS Multidrug susceptibility testing was performed with doxycycline and antifungals, including itraconazole, posaconazole, and amphotericin, in 21 isolates of 8 dominant Mucorales pathogens. RESULTS The fractional inhibitory concentration index according to M38 showed one Rhizopus arrhizus isolate synergic (∑FICI = 0.375) and other isolates in addition (0.5 < ∑FICI < 4). CONCLUSIONS Doxycycline was found to have in vitro advantages in combined antifungal treatment over antifungals alone.
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Affiliation(s)
- Meijie Zhang
- Department of Medical Mycology, Institute of Dermatology, Chinese Academy of Medical Science and Peking Union Medical College, Nanjing, 210042, China
- Department of Dermatology, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Ge Song
- Department of Medical Mycology, Institute of Dermatology, Chinese Academy of Medical Science and Peking Union Medical College, Nanjing, 210042, China
- Department of Dermatology, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, China
| | - Hailin Zheng
- Department of Medical Mycology, Institute of Dermatology, Chinese Academy of Medical Science and Peking Union Medical College, Nanjing, 210042, China
- Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Nanjing, 211166, China
- CAMS Collection Center of Pathogen Microorganisms-D (CAMS-CCPM-D), Nanjing, 210042, China
| | - Balaji Pathakumari
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic, Rochester, MN, 55901, USA
| | - Weida Liu
- Department of Medical Mycology, Institute of Dermatology, Chinese Academy of Medical Science and Peking Union Medical College, Nanjing, 210042, China.
- Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Nanjing, 211166, China.
- CAMS Collection Center of Pathogen Microorganisms-D (CAMS-CCPM-D), Nanjing, 210042, China.
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
| | - Guanzhao Liang
- Department of Medical Mycology, Institute of Dermatology, Chinese Academy of Medical Science and Peking Union Medical College, Nanjing, 210042, China.
- Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Nanjing, 211166, China.
- CAMS Collection Center of Pathogen Microorganisms-D (CAMS-CCPM-D), Nanjing, 210042, China.
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Hornuss D, Mathé P, Usadel S, Zimmermann S, Müller M, Rieg S. Already current practice? A snapshot survey on doxycycline use for prevention of sexually transmitted infections in parts of the German MSM community. Infection 2023; 51:1831-1834. [PMID: 37608042 PMCID: PMC10665247 DOI: 10.1007/s15010-023-02086-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 08/13/2023] [Indexed: 08/24/2023]
Abstract
PURPOSE Recent studies point toward a potential benefit of doxycycline use for post-exposure prophylaxis (PEP) or pre-exposure prophylaxis (PrEP) to prevent sexually transmitted infections (STIs). Although prescribing doxycycline in a prophylactic intention is not generally recommended yet, we noticed an increasing number of inquiries from individuals within the LGBTQ community for doxycycline prescriptions. METHODS We conducted an anonymous online survey to evaluate the current extent of doxycycline use for PEP or PrEP within the LGBTQ community using REDCap electronic data capture tools. Participants gained access to the online survey through a QR code on posters in the premises of our STI outpatient department and at LGBTQ community-related events in the south-western region of Germany. Additional access was provided by a direct link shared on social media profiles for men having sex with men (MSM), transgender, and queers. RESULTS 96 of 99 responses were eligible for analysis. Twenty-two participants (23%) indicated to have already used doxycycline for PEP and six participants (6%) used doxycycline for PrEP. The majority of participants used pills left over from previous doxycycline treatment. Forty percent of indicated modes of access were without a regular prescription, e.g., by provision from acquaintances (with or without healthcare profession) or by ordering online. CONCLUSION Our study shows that the concept of doxycycline use for prevention of STIs is already well known and applied in the LGBTQ community. Further analysis, especially modeling studies, are needed to evaluate strategies aiming to reduce doxycycline intake (PEP/PrEP versus repeated targeted therapies) and improve sexual health outcomes within the community.
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Affiliation(s)
- Daniel Hornuss
- Division of Infectious Diseases, Department of Medicine II, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106, Freiburg, Germany.
| | - Philipp Mathé
- Division of Infectious Diseases, Department of Medicine II, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106, Freiburg, Germany
| | - Susanne Usadel
- Department of Infection Medicine, Medical Service Centre Clotten, Freiburg, Germany
| | | | - Matthias Müller
- Division of Infectious Diseases, Department of Medicine II, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106, Freiburg, Germany
- Department of Infection Medicine, Medical Service Centre Clotten, Freiburg, Germany
| | - Siegbert Rieg
- Division of Infectious Diseases, Department of Medicine II, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106, Freiburg, Germany
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Mandili SY, Albishi AA, Badr OI. Case report of pulmonary brucellosis complicated by pleural effusion. Respir Med Case Rep 2023; 46:101924. [PMID: 38053628 PMCID: PMC10694564 DOI: 10.1016/j.rmcr.2023.101924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/21/2023] [Accepted: 10/03/2023] [Indexed: 12/07/2023] Open
Abstract
Brucellosis is a bacterial disease and one of the most widespread zoonoses transmitted by an animal. It can affect any organ system, but pulmonary involvement is an unusual presentation according to the literature. We report the case of a 32 -year-old lady from Saudi Arabia who suffered from persistent fever and was found to have lobar pneumonia complicated by parapneumonic effusion. She started empirical antibiotics, and many investigations were done. In the end, after more detail about the patient's circumstances, the presumptive diagnosis of Brucella was made by high serology titer. She was effectively treated with doxycycline and rifampicin and completely recovered. In conclusion, pulmonary brucellosis is infrequent and challengeable in diagnosis but should be knowledge, especially in endemic areas of brucellosis.
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Affiliation(s)
- Shuaa Y. Mandili
- Pulmonary Department, Alnoor Specialist Hospital/Ministry of Health, Mecca, Saudi Arabia
| | - Anas A. Albishi
- Internal Medicine Department, Alnoor Specialist Hospital/Ministry of Health, Mecca, Saudi Arabia
| | - Omaima ibrahim Badr
- Pulmonary Department, Alnoor Specialist Hospital/Ministry of Health, Mecca, Saudi Arabia
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Alonso-Llada C, Zapico-González MS, Caminal-Montero L, Fernández J. Clostridioides difficile recovered in pleural fluid: Contamination or infection? A case report of a proven empyema and a literature review. Enferm Infecc Microbiol Clin (Engl Ed) 2023; 41:563-566. [PMID: 36707287 DOI: 10.1016/j.eimce.2022.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 06/15/2022] [Indexed: 06/18/2023]
Abstract
INTRODUCTION Pleural empyema is an infrequent manifestation of extraintestinal Clostridioidesdifficile infection, with just eight cases reported in literature. METHODS We report a new case in a 70-year-old male without comorbidities or evidence of concomitant gastrointestinal disease, and review the previous cases reported in the literature. RESULTS The isolate was susceptible to all antimicrobial tested and was negative for A+B toxins. The patient fully recovered after drainages and antimicrobial therapy with amoxicillin-clavulanate and doxycycline. CONCLUSION As in the previously reported cases, aspiration was the most plausible hypothesis of mechanism of infection in our patient. Empyema by Clostridioidesdifficile is a diagnostic challenge, since it is necessary to rule out that the isolation of this microorganism in pleural fluid is not a contamination. Furthermore, more evidence is needed for its treatment since data regarding this entity are still scarce.
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Affiliation(s)
- Carmen Alonso-Llada
- Internal Medicine Department, Hospital Universitario Central de Asturias, Oviedo, Spain
| | | | - Luis Caminal-Montero
- Internal Medicine Department, Hospital Universitario Central de Asturias, Oviedo, Spain; Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Javier Fernández
- Clinical Microbiology Department, Hospital Universitario Central de Asturias, Oviedo, Spain; Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain; Research & Innovation, Artificial Intelligence and Statistical Department, Pragmatech AI Solutions, Oviedo, Spain; CIBER-Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain.
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Pfarr KM, Krome AK, Al-Obaidi I, Batchelor H, Vaillant M, Hoerauf A, Opoku NO, Kuesel AC. The pipeline for drugs for control and elimination of neglected tropical diseases: 2. Oral anti-infective drugs and drug combinations for off-label use. Parasit Vectors 2023; 16:394. [PMID: 37907954 PMCID: PMC10619278 DOI: 10.1186/s13071-023-05909-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 07/31/2023] [Indexed: 11/02/2023] Open
Abstract
In its 'Road map for neglected tropical diseases 2021-2030', the World Health Organization outlined its targets for control and elimination of neglected tropical diseases (NTDs) and research needed to achieve them. For many NTDs, this includes research for new treatment options for case management and/or preventive chemotherapy. Our review of small-molecule anti-infective drugs recently approved by a stringent regulatory authority (SRA) or in at least Phase 2 clinical development for regulatory approval showed that this pipeline cannot deliver all new treatments needed. WHO guidelines and country policies show that drugs may be recommended for control and elimination for NTDs for which they are not SRA approved (i.e. for 'off-label' use) if efficacy and safety data for the relevant NTD are considered sufficient by WHO and country authorities. Here, we are providing an overview of clinical research in the past 10 years evaluating the anti-infective efficacy of oral small-molecule drugs for NTD(s) for which they are neither SRA approved, nor included in current WHO strategies nor, considering the research sponsors, likely to be registered with a SRA for that NTD, if found to be effective and safe. No such research has been done for yaws, guinea worm, Trypanosoma brucei gambiense human African trypanosomiasis (HAT), rabies, trachoma, visceral leishmaniasis, mycetoma, T. b. rhodesiense HAT, echinococcosis, taeniasis/cysticercosis or scabies. Oral drugs evaluated include sparfloxacin and acedapsone for leprosy; rifampicin, rifapentin and moxifloxacin for onchocerciasis; imatinib and levamisole for loiasis; itraconazole, fluconazole, ketoconazole, posaconazole, ravuconazole and disulfiram for Chagas disease, doxycycline and rifampicin for lymphatic filariasis; arterolane, piperaquine, artesunate, artemether, lumefantrine and mefloquine for schistosomiasis; ivermectin, tribendimidine, pyrantel, oxantel and nitazoxanide for soil-transmitted helminths including strongyloidiasis; chloroquine, ivermectin, balapiravir, ribavirin, celgosivir, UV-4B, ivermectin and doxycycline for dengue; streptomycin, amoxicillin, clavulanate for Buruli ulcer; fluconazole and isavuconazonium for mycoses; clarithromycin and dapsone for cutaneous leishmaniasis; and tribendimidine, albendazole, mebendazole and nitazoxanide for foodborne trematodiasis. Additional paths to identification of new treatment options are needed. One promising path is exploitation of the worldwide experience with 'off-label' treatment of diseases with insufficient treatment options as pursued by the 'CURE ID' initiative.
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Affiliation(s)
- Kenneth M Pfarr
- Institute of Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn, Germany
- German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Bonn, Germany
| | - Anna K Krome
- Institute of Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn, Germany
- German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Bonn, Germany
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Bonn, Bonn, Germany
| | - Issraa Al-Obaidi
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, UK
| | - Hannah Batchelor
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, UK
| | - Michel Vaillant
- Competence Center for Methodology and Statistics, Luxembourg Institute of Health, Strassen, Grand Duchy of Luxembourg
| | - Achim Hoerauf
- Institute of Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn, Germany
- German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Bonn, Germany
| | - Nicholas O Opoku
- Department of Epidemiology and Biostatistics School of Public Health, University of Health and Allied Sciences, Hohoe, Ghana
| | - Annette C Kuesel
- UNICEF/UNDP/World Bank/WHO Special Programme for Research and Training in Tropical Diseases (WHO/TDR), World Health Organization, Geneva, Switzerland.
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Li Z, Li S, Li Y, Liu M, Jiang L, Niu J, Zhang Y, Zhou Q. Highly selective and sensitive determination of doxycycline integrating enrichment with thermosensitive magnetic molecular imprinting nanomaterial and carbon dots based fluorescence probe. Sci Total Environ 2023; 896:165257. [PMID: 37414165 DOI: 10.1016/j.scitotenv.2023.165257] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 06/15/2023] [Accepted: 06/30/2023] [Indexed: 07/08/2023]
Abstract
Doxycycline (DOX), a typical tetracycline antibiotic, is widely used because of its excellent antibacterial activity. To develop effective method for DOX has attracted much more attention. Herein, a new detection technology integrating magnetic solid phase extraction (MSPE) based on thermosensitive magnetic molecularly imprinted polymers (T-MMIPs) and fluorescence spectrometry based on carbon dots (CDs) was established. Thermosensitive magnetic molecularly imprinted polymers (T-MMIPs) was designed for selective enrichment of trace DOX. The synthesized T-MMIPs showed excellent selectivity for DOX. The adsorption performance of T-MMIPs varied with temperature in different solvents, which could achieve the enrichment and rapid desorption of DOX. In addition, the synthesized CDs had stable fluorescent property and better water-solubility, and the fluorescence of CDs was significantly quenched by DOX due to the internal filtration effect (IFE). Under the optimized conditions, the method resulted in good linearity over the range from 0.5 to 30 μg L-1, and the limit of detection was 0.2 μg L-1. The constructed detection technology was validated with real water samples, and excellent spiked recoveries from 92.5 % to 105.2 % were achieved. These data clearly indicated that the proposed technology was rapid, highly selective, environmentally friendly, and possessed significant potential application and development prospects.
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Affiliation(s)
- Zhi Li
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing 102249, China
| | - Shuangying Li
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing 102249, China
| | - Yanhui Li
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing 102249, China
| | - Menghua Liu
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing 102249, China
| | - Liushan Jiang
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing 102249, China
| | - Jinwen Niu
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing 102249, China
| | - Yue Zhang
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing 102249, China
| | - Qingxiang Zhou
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing 102249, China.
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Li J, Qin Y, Zhao C, Zhang Z, Zhou Z. Tetracycline antibiotics: Potential anticancer drugs. Eur J Pharmacol 2023; 956:175949. [PMID: 37541377 DOI: 10.1016/j.ejphar.2023.175949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 07/22/2023] [Accepted: 08/01/2023] [Indexed: 08/06/2023]
Abstract
In recent years, research on tetracycline antibiotics has gradually shifted from their antibacterial effects to anticancer effects. Doxycycline, minocycline, and tigecycline as the US Food and Drug Administration (FDA) approved tetracycline antibiotics have been the main subjects of studies. Evidence indicated that they have anticancer properties and are able to control cancer progression through different mechanisms, such as anti-proliferation, anti-metastasis, and promotion of autophagy or apoptosis. In addition, studies have shown that these three tetracycline antibiotics can be utilized in conjunction with chemotherapeutic and targeted drugs to inhibit cancer progression and improve the quality of patient survival. Therefore, doxycycline, minocycline, and tigecycline are taken as examples in this work. Their mechanisms of action in different cancers and related combination therapies are introduced. Their current roles in alleviating the suffering of patients undergoing chemotherapy when used as adjuvant drugs in clinical treatment are also described. Finally, the research gaps and potential research directions at this stage are briefly summarized.
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Affiliation(s)
- Jiayu Li
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Yuan Qin
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China; College of Pharmacy, Nankai University, China
| | - Chenhao Zhao
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Zhi Zhang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Zhiruo Zhou
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, China.
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Rezaei Shahrabi A, Moradkasani S, Goodarzi F, Beig M, Sholeh M. Prevalence of Brucella melitensis and Brucella abortus tetracyclines resistance: A systematic review and meta-analysis. Microb Pathog 2023; 183:106321. [PMID: 37673354 DOI: 10.1016/j.micpath.2023.106321] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 08/21/2023] [Accepted: 08/22/2023] [Indexed: 09/08/2023]
Abstract
INTRODUCTION Brucellosis is a zoonotic disease that can be transmitted from animals to humans. Brucellosis is caused by bacteria of the genus Brucella, which are typically transmitted through contact with infected animals, unpasteurized dairy products, or airborne pathogens. Tetracyclines (tetracycline and doxycycline) are antibiotics commonly used to treat brucellosis; however, antibiotic resistance has become a major concern. This study assessed the worldwide prevalence of tetracycline-resistant Brucella isolates. METHODS A systematic search was conducted in Scopus, PubMed, Web of Science, and EMBASE using relevant keywords and Medical Subject Headings (MeSH) terms until August 13, 2022, to identify relevant studies for meta-analysis. A random effects model was used to estimate the proportion of resistance. Meta-regression analysis, subgroup analysis, and examination of outliers and influential studies were also performed. RESULTS The prevalence rates of resistance to tetracycline and doxycycline were estimated to be 0.017 (95% confidence interval [CI], 0.009-0.035) and 0.017 (95%CI, 0.011-0.026), respectively, based on 51 studies conducted from 1983 to 2020. Both drugs showed increasing resistance over time (tetracycline: r = 0.077, P = 0.012; doxycycline: r = 0.059, P = 0.026). CONCLUSION The prevalence of tetracycline and doxycycline resistance in Brucella was low (1.7%) but increased over time. This increase in tetracycline and doxycycline resistance highlights the need for further research to understand resistance mechanisms and develop more effective treatments.
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Affiliation(s)
| | | | - Forough Goodarzi
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Masoumeh Beig
- Department of Bacteriology, Pasteur Institute of Iran, Tehran, Iran
| | - Mohammad Sholeh
- Department of Bacteriology, Pasteur Institute of Iran, Tehran, Iran.
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Korać Jačić J, Dimitrijević M, Bajuk-Bogdanović D, Stanković D, Savić S, Spasojević I, Milenković MR. The formation of Fe 3+- doxycycline complex is pH dependent: implications to doxycycline bioavailability. J Biol Inorg Chem 2023; 28:679-687. [PMID: 37656248 DOI: 10.1007/s00775-023-02018-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 08/20/2023] [Indexed: 09/02/2023]
Abstract
The interactions of drugs with iron are of interest in relation to the potential effects of iron-rich foods and iron supplements on sorption and bioavailability. Doxycycline (DOX), a member of the tetracycline class of broad-spectrum antibiotics, is frequently administered by oral route. In the digestive tract, DOX can be exposed to iron at different pH values (stomach pH 1.5-4, duodenum pH 5-6, distal jejunum and ileum pH 7-8). In relation to this, we analyzed the impact of pH on Fe3+-DOX complex formation. The optimal conditions for Fe3+-DOX complex formation are pH = 4 and [Fe3+]/[DOX] = 6 molar ratio. HESI-MS showed that Fe3+-DOX complex has 1:1 stoichiometry. Raman spectra of Fe3+-DOX complex indicate the presence of two Fe3+-binding sites in DOX structure: tricarbonylamide group of ring A and phenolic-diketone oxygens of BCD rings. The Fe3+-DOX complex formed at pH = 4 is less susceptible to oxidation than DOX at this pH. The increase of pH induces the decomposition of Fe3+-DOX complex without oxidative degradation of DOX. The pH dependence of Fe3+-DOX complex formation may promote unwanted effects of DOX, impeding the absorption that mainly takes place in duodenum. This could further result in higher concentrations in the digestive tract and to pronounced impact on gut microbiota.
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Affiliation(s)
- Jelena Korać Jačić
- Life Sciences Department, University of Belgrade-Institute for Multidisciplinary Research, Kneza Višeslava 1, 11000, Belgrade, Serbia.
| | - Milena Dimitrijević
- Life Sciences Department, University of Belgrade-Institute for Multidisciplinary Research, Kneza Višeslava 1, 11000, Belgrade, Serbia
| | - Danica Bajuk-Bogdanović
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11000, Belgrade, Serbia
| | - Dalibor Stanković
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000, Belgrade, Serbia
| | - Slađana Savić
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000, Belgrade, Serbia
| | - Ivan Spasojević
- Life Sciences Department, University of Belgrade-Institute for Multidisciplinary Research, Kneza Višeslava 1, 11000, Belgrade, Serbia
| | - Milica R Milenković
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000, Belgrade, Serbia.
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Carrillo MP, Sevilla M, Casado M, Piña B, Pastor López E, Matamoros V, Vila-Costa M, Barata C. Impact of the antibiotic doxycycline on the D. magna reproduction, associated microbiome and antibiotic resistance genes in treated wastewater conditions. Environ Pollut 2023; 334:122188. [PMID: 37442322 DOI: 10.1016/j.envpol.2023.122188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 06/02/2023] [Accepted: 07/11/2023] [Indexed: 07/15/2023]
Abstract
Wastewater Treatment Plant (WWTP) effluents are important sources of antibiotics, antibiotic resistance genes (ARGs) and resistant bacteria that threaten aquatic biota and human heath. Antibiotic effects on host-associated microbiomes, spread of ARGs and the consequences for host health are still poorly described. This study investigated changes of the Daphnia magna associated microbiome exposed to the recalcitrant antibiotic doxycycline under artificial reconstituted lab water media (lab water) and treated wastewater media. D. magna individual juveniles were exposed for 10 days to treated wastewater with and without doxycycline, and similarly in lab water. We analysed 16 S rRNA gene sequences to assess changes in community structure, monitored Daphnia offspring production and quantified ARGs abundances by qPCR from both Daphnia and water (before and after the exposure). Results showed that doxycycline and media (lab water or wastewater) had a significant effect modulating Daphnia-associated microbiome composition and one of the most discriminant taxa was Enterococcus spp. Moreover, in lab water, doxycycline reduced the presence of Limnohabitans sp., which are dominant bacteria of the D. magna-associated microbiome and impaired Daphnia reproduction. Contrarily, treated wastewater increased diversity and richness of Daphnia-associated microbiome and promoted fecundity. In addition, the detected ARG genes in both lab water and treated wastewater medium included the qnrS1, sul1, and blaTEM, and the integron-related intI1 gene. The treated wastewater contained about 10 times more ARGs than lab water alone. Furthermore, there was an increase of sul1 in Daphnia cultured in treated wastewater compared to lab water. In addition, there were signs of a higher biodegradation of doxycycline by microbiomes of treated wastewater in comparison to lab water. Thus, results suggest that Daphnia-associated microbiomes are influenced by their environment, and that bacterial communities present in treated wastewater are better suited to cope with the effects of antibiotics.
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Affiliation(s)
- Maria Paula Carrillo
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Jordi Girona 18, 08034, Catalonia, Spain
| | - Marina Sevilla
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Jordi Girona 18, 08034, Catalonia, Spain
| | - Marta Casado
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Jordi Girona 18, 08034, Catalonia, Spain
| | - Benjamin Piña
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Jordi Girona 18, 08034, Catalonia, Spain
| | - Edward Pastor López
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Jordi Girona 18, 08034, Catalonia, Spain
| | - Victor Matamoros
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Jordi Girona 18, 08034, Catalonia, Spain
| | - Maria Vila-Costa
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Jordi Girona 18, 08034, Catalonia, Spain
| | - Carlos Barata
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Jordi Girona 18, 08034, Catalonia, Spain.
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Osorio MT, Toledano R, Huang H, Toledano-Osorio M, Osorio R, Huang CYC, García-Godoy F. Effect of doxycycline doped nanoparticles on osteogenic/cementogenic and anti-inflammatory responses of human cells derived from the periodontal ligament. J Dent 2023; 137:104668. [PMID: 37597689 DOI: 10.1016/j.jdent.2023.104668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 08/14/2023] [Accepted: 08/16/2023] [Indexed: 08/21/2023] Open
Abstract
OBJECTIVES This work aimed to evaluate if doxycycline-doped polymeric nanoparticles possessed any anti-inflammatory effect and promote osteogenic/cementogenic differentiation of stem cells from human periodontal ligament (PDLSCs). METHODS The polymeric nanoparticles (NPs) were produced by a polymerization/precipitation process and doped with doxycycline (Dox-NPs). PDLSCs were cultured in the presence or absence of the NPs under osteogenic medium or IL-1β treatment. Cells' differentiation was assessed by gene expression analysis of osteogenic/cementogenic markers alkaline phosphatase (ALP) and Runt-related transcription factor 2 (RUNX2). An anti-inflammatory effect was also ascertained by analyzing IL-1β gene expression. Adipogenic and chondrogenic differentiation was used to confirm the multipotency of PDLSCs. RESULTS Gene expression of ALP and RUNX2 in PDLSCs was significantly upregulated by the osteogenic medium (ALP: p<0.001; RUNX2: p = 0.005) while Dox-NPs further enhanced ALP gene expression of PDLSCs treated with the osteogenic medium. Furthermore, Dox-NPs suppressed the up-regulation of IL-1β when cells were subjected to an inflammatory challenge. CONCLUSIONS Dox-NPs enhanced PDLSCs differentiation into osteoblasts/cementoblasts lineages while providing an anti-inflammatory effect. CLINICAL SIGNIFICANCE Due to their biocompatibility as well as anti-inflammatory and osteogenic/cementogenic effects, Dox-NPs are potential candidates for being used in periodontal regeneration.
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Affiliation(s)
| | | | | | | | | | | | - Franklin García-Godoy
- University of Tennessee, Memphis, TN, USA; The Forsyth Institute, Cambridge, MA, USA
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Park KH, He X, Jiang L, Zhu H, Liang J, Wang Y, Ma J. Activation of MG53 Enhances Cell Survival and Engraftment of Human Induced Pluripotent Stem Cell-Derived Cardiomyocytes in Injured Hearts. Stem Cell Rev Rep 2023; 19:2420-2428. [PMID: 37477774 PMCID: PMC10579131 DOI: 10.1007/s12015-023-10596-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/13/2023] [Indexed: 07/22/2023]
Abstract
BACKGROUND AND OBJECTIVE Our previous studies demonstrated that MG53 protein can protect the myocardium, but its use as a therapeutic is challenging due to its short half-life in blood circulation. This study aimed to investigate the cardioprotective role of MG53 on human induced pluripotent stem cell-derived cardiomyocytes (HiPSC-CMs) in the context of myocardial ischemia/reperfusion (I/R). METHODS In vitro: HiPSC-CMs were transfected with adenoviral MG53 (HiPSC-CMsMG53), in which the expression of MG53 can be controlled by doxycycline (Dox), and the cells were then exposed to H2O2 to mimic ischemia/reperfusion injury. In vivo: HiPSC-CMsMG53 were transplanted into the peri-infarct region in NSG™ mice after I/R. After surgery, mice were treated with Dox (+ Dox) to activate MG53 expression (sucrose as a control of -Dox) and then assessed by echocardiography and immunohistochemistry. RESULTS MG53 can be expressed in HiPSC-CMMG53 and released into the culture medium after adding Dox. The cell survival rate of HiPSC-CMMG53 was improved by Dox under the H2O2 condition. After 14 and 28 days of ischemia/reperfusion (I/R), transplanted HiPSC-CMsMG53 + Dox significantly improved heart function, including ejection fraction (EF) and fractional shortening (FS) in mice, compared to HiPSC-CMsMG53-Dox, and reduced the size of the infarction. Additionally, HiPSC-CMMG53 + Dox mice demonstrated significant engraftment in the myocardium as shown by staining human nuclei-positive cells. In addition, the cell survival-related AKT signaling was found to be more active in HiPSC-CMMG53 + Dox transplanted mice's myocardium compared to the HiPSC-CMMG53-Dox group. Notably, the Dox treatment did not cause harm to other organs. CONCLUSION Inducible MG53 expression is a promising approach to enhance cell survival and engraftment of HiPSC-CMs for cardiac repair.
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Affiliation(s)
- Ki Ho Park
- Division of Surgical Sciences, Department of Surgery, University of Virginia School of Medicine, Charlottesville, VA, USA.
| | - Xingyu He
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Lin Jiang
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Hua Zhu
- Department of Surgery, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Jialiang Liang
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Yigang Wang
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH, USA.
| | - Jianjie Ma
- Division of Surgical Sciences, Department of Surgery, University of Virginia School of Medicine, Charlottesville, VA, USA.
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Zhang J, Wang J, Kelly PJ, Zhang Y, Li M, Li J, Zhang R, Wang Y, Huang K, You J, Qiu H, Zheng X, Wang X, Li J, Dong J, Yang Y, Wang C. Experimental infection and co-infection with Chinese strains of Ehrlichia canis and Babesia vogeli in intact and splenectomized dogs: Insights on clinical, hematologic and treatment responses. Vet Parasitol 2023; 323:110032. [PMID: 37783174 DOI: 10.1016/j.vetpar.2023.110032] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 09/20/2023] [Accepted: 09/22/2023] [Indexed: 10/04/2023]
Abstract
Animal infection models are crucial for studying various aspects of Ehrlichia canis infections. To understand the pathogenesis of the first Chinese isolate of E. canis and simulate the natural progression of canine ehrlichiosis, we developed a model with 18 Beagle dogs that consisted of E. canis initial infection (days 0-17), treatment with doxycycline or rifampicin (days 18-32), recovery (days 33-66), E. canis reinfection (days 67-91), and Babesia vogeli superinfection (days 92-116). We measured body weight and rectal temperature every other day, drew blood every 4 days for routine hematology and biochemistry tests, and for quantification of E. canis and B. vogeli by quantitative PCRs. In this study, the first isolate of E. canis from China was used to experimentally infect dogs, and the infected dogs exhibited clinical signs of acute severe ehrlichiosis, including high fever, loss of appetite, dehydration, and body weight loss, confirming the similar pathogenicity of E. canis in China as compared to isolates from other regions. Infection with E. canis and B. vogeli led to reduced body weight and fever in dogs. Doxycycline treatment led to absence of E. canis DNA in infected dogs, while rifampicin treatment lowered the blood E. canis copy number up to 1.5 folds. E. canis-free infected dogs after doxycycline treatment were successfully re-infected with E. canis, indicating dogs with antibodies are still at risk of re-infection. Super-infection with B. vogeli resulted in higher fever, more severe anemia, and a reduced number of platelets. Splenectomized dogs showed significantly higher E. canis numbers during recovery and re-infection than intact dogs. The histological changes were observed in brain, lung, kidney, liver and spleen of the infected dogs. The findings in this study provide insights into clinical and hematologic responses, as well as effective treatment options, for dogs infected with the first Chinese isolate of E. canis, and may contribute to our understanding of the diagnosis and prevention of tick-borne diseases in dogs, including canine monocytic ehrlichiosis.
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Affiliation(s)
- Jilei Zhang
- Yangzhou University College of Veterinary Medicine, Yangzhou, Jiangsu, China; College of Medicine, University of Illinois Chicago, Chicago, IL, USA
| | - Jiawei Wang
- Yangzhou University College of Veterinary Medicine, Yangzhou, Jiangsu, China
| | | | - Yuanyuan Zhang
- Yangzhou University College of Veterinary Medicine, Yangzhou, Jiangsu, China
| | - Min Li
- Yangzhou University College of Veterinary Medicine, Yangzhou, Jiangsu, China
| | - Jing Li
- Yangzhou University College of Veterinary Medicine, Yangzhou, Jiangsu, China
| | - Rong Zhang
- Yangzhou University College of Veterinary Medicine, Yangzhou, Jiangsu, China
| | - Yaoyao Wang
- Yangzhou University College of Veterinary Medicine, Yangzhou, Jiangsu, China
| | - Ke Huang
- Yangzhou University College of Veterinary Medicine, Yangzhou, Jiangsu, China
| | - Jinfeng You
- Yangzhou University College of Veterinary Medicine, Yangzhou, Jiangsu, China
| | - Haixiang Qiu
- Yangzhou University College of Veterinary Medicine, Yangzhou, Jiangsu, China
| | - Xiaofeng Zheng
- Jiangsu Agri-animal Husbandry Vocational College, Taizhou, Jiangsu, China
| | - Xiaobo Wang
- Yangzhou University College of Veterinary Medicine, Yangzhou, Jiangsu, China
| | - Jianji Li
- Yangzhou University College of Veterinary Medicine, Yangzhou, Jiangsu, China
| | - Junsheng Dong
- Yangzhou University College of Veterinary Medicine, Yangzhou, Jiangsu, China
| | - Yi Yang
- Yangzhou University College of Veterinary Medicine, Yangzhou, Jiangsu, China.
| | - Chengming Wang
- College of Veterinary Medicine, Auburn University, Auburn, AL, USA.
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Jung D, Cha JK, Kim YT, Kim CS. Comparing the clinical effects of local administration of minocycline ointment and doxycycline solution in the treatment of acute periodontal abscesses: a retrospective clinical study. J Periodontal Implant Sci 2023; 53:53.e49. [PMID: 37857519 DOI: 10.5051/jpis.2300800040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 05/30/2023] [Accepted: 06/15/2023] [Indexed: 10/21/2023] Open
Abstract
PURPOSE The objective of this retrospective clinical study was to provide evidence supporting the adjunctive local application of doxycycline solution or minocycline ointment, in conjunction with drainage, for the treatment of acute periodontal abscesses. METHODS The study included 63 patients who had received treatment for acute periodontal abscesses through drainage supplemented with 1 of 3 types of adjunctive medications during their initial visit (visit 1; baseline): 1) saline irrigation (the control group), 2) 2% minocycline ointment (the TM group), or 3) 300 mg/mL doxycycline irrigation (the TD group). The same adjunctive medication was administered at visit 2, which took place 1 week after visit 1. Probing depth (PD), bleeding on probing (BOP), plaque index, gingival recession, clinical attachment level, and tooth mobility were clinically evaluated at visits 1, 2, and a third visit (visit 3; 4 weeks after visit 1). Statistical significance was considered to be indicated by P values <0.05. RESULTS By visit 3, all clinical indices and tooth mobility had significantly decreased in each group. At this visit, PD and BOP on the abscess side were significantly lower in the TM and TD groups compared to the control group. The TD group showed a significantly greater improvement than the TM group, with mean PD reductions of 1.09 mm in the control group, 1.88 mm in the TM group, and 2.88 mm in the TD group. Similarly, mean BOP reductions were 45% in the control group, 73.02% in the TM group, and 95.45% in the TD group. CONCLUSIONS Local and adjunctive administration of doxycycline and minocycline in combination with drainage exhibited clinical advantages over drainage alone in improving PD and BOP. Notably, a doxycycline solution of 300 mg/mL was more effective than a 2% minocycline ointment.
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Affiliation(s)
- DongYeol Jung
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Jae-Kook Cha
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Young-Taek Kim
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
- Department of Periodontology, National Health Insurance Corporation Ilsan Hospital, Goyang, Korea
| | - Chang-Sung Kim
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
- Oral Science Research Center, Yonsei University College of Dentistry, Seoul, Korea.
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