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Guan L, Beig M, Wang L, Navidifar T, Moradi S, Motallebi Tabaei F, Teymouri Z, Abedi Moghadam M, Sedighi M. Global status of antimicrobial resistance in clinical Enterococcus faecalis isolates: systematic review and meta-analysis. Ann Clin Microbiol Antimicrob 2024; 23:80. [PMID: 39182092 PMCID: PMC11344933 DOI: 10.1186/s12941-024-00728-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 07/29/2024] [Indexed: 08/27/2024] Open
Abstract
BACKGROUND Due to the increasing emergence of antibiotic resistance in Enterococcus faecalis (E. faecalis), it indicated as potentially opportunistic pathogen causing various healthcare-associated and life-threatening diseases around the world. OBJECTIVE The aim of this meta-analysis was to evaluate the weighted pooled resistance rates in clinical E. faecalis isolates based on over time, areas, antimicrobial susceptibility testing (AST), and infection source. METHODS We searched the studies in PubMed, Scopus, and Web of Science (November 30, 2022). All statistical analyses were carried out using the statistical package R. RESULTS The analysis encompassed a total of 74 studies conducted in 28 countries. According to the meta-regression, the chloramphenicol, fosfomycin, imipenem, linezolid, minocycline, norfloxacin, quinupristin-dalfopristin, and tetracycline resistance rate increased over time. Analysis revealed statistically significant differences in antibiotic resistance rates for ampicillin, chloramphenicol, erythromycin, gentamicin, penicillin, rifampicin, teicoplanin, tetracycline, and vancomycin across various countries. CONCLUSIONS Globally, the prevalence of drug resistant E. faecalis strains are on the increase over time. Daptomycin and tigecycline can be an effective agent for the treatment of clinical E. faecalis infections. Considering the low prevalence of antibiotic resistance in continents of Europe and Australia, it is suggested to take advantage of their preventive strategies in order to obtain efficient results in other places with high prevalence of resistance.
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Affiliation(s)
- Lingbo Guan
- Department of Intensive Care Unit, Linping Campus, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 311100, Zhejiang, China
| | - Masoumeh Beig
- Department of Bacteriology, Pasteur Institute of Iran, Tehran, Iran
| | - Lina Wang
- Department of Intensive Care Unit, Linping Campus, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 311100, Zhejiang, China
| | - Tahereh Navidifar
- Department of Basic Sciences, Shoushtar Faculty of Medical Sciences, Shoushtar, Iran
| | - Samaneh Moradi
- Department of Microbiology, Faculty of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
| | - Faezeh Motallebi Tabaei
- Department of Microbiology, Faculty of Medicine, Golestan University of Medical Sciences, Gorgan, Iran.
| | - Zahra Teymouri
- Laboratory Sciences Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Mahya Abedi Moghadam
- Laboratory Sciences Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Mansour Sedighi
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran.
- Department of Microbiology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran.
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Mullally CA, Fahriani M, Mowlaboccus S, Coombs GW. Non- faecium non- faecalis enterococci: a review of clinical manifestations, virulence factors, and antimicrobial resistance. Clin Microbiol Rev 2024; 37:e0012123. [PMID: 38466110 PMCID: PMC11237509 DOI: 10.1128/cmr.00121-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024] Open
Abstract
SUMMARYEnterococci are a diverse group of Gram-positive bacteria that are typically found as commensals in humans, animals, and the environment. Occasionally, they may cause clinically relevant diseases such as endocarditis, septicemia, urinary tract infections, and wound infections. The majority of clinical infections in humans are caused by two species: Enterococcus faecium and Enterococcus faecalis. However, there is an increasing number of clinical infections caused by non-faecium non-faecalis (NFF) enterococci. Although NFF enterococcal species are often overlooked, studies have shown that they may harbor antimicrobial resistance (AMR) genes and virulence factors that are found in E. faecium and E. faecalis. In this review, we present an overview of the NFF enterococci with a particular focus on human clinical manifestations, epidemiology, virulence genes, and AMR genes.
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Affiliation(s)
- Christopher A Mullally
- Antimicrobial Resistance and Infectious Diseases (AMRID) Research Laboratory, Murdoch University, Murdoch, Western Australia, Australia
- The Marshall Centre for Infectious Diseases Research and Training, School of Biomedical Sciences, The University of Western Australia, Perth, Western Australia, Australia
| | - Marhami Fahriani
- Antimicrobial Resistance and Infectious Diseases (AMRID) Research Laboratory, Murdoch University, Murdoch, Western Australia, Australia
| | - Shakeel Mowlaboccus
- Antimicrobial Resistance and Infectious Diseases (AMRID) Research Laboratory, Murdoch University, Murdoch, Western Australia, Australia
- The Marshall Centre for Infectious Diseases Research and Training, School of Biomedical Sciences, The University of Western Australia, Perth, Western Australia, Australia
- PathWest Laboratory Medicine-WA, Department of Microbiology, Fiona Stanley Hospital, Murdoch, Western Australia, Australia
| | - Geoffrey W Coombs
- Antimicrobial Resistance and Infectious Diseases (AMRID) Research Laboratory, Murdoch University, Murdoch, Western Australia, Australia
- The Marshall Centre for Infectious Diseases Research and Training, School of Biomedical Sciences, The University of Western Australia, Perth, Western Australia, Australia
- PathWest Laboratory Medicine-WA, Department of Microbiology, Fiona Stanley Hospital, Murdoch, Western Australia, Australia
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Garcia O’Farrill N, Abi Karam M, Villegas VM, Flynn HW, Grzybowski A, Schwartz SG. New Approaches to Overcoming Antimicrobial Resistance in Endophthalmitis. Pharmaceuticals (Basel) 2024; 17:321. [PMID: 38543107 PMCID: PMC10974156 DOI: 10.3390/ph17030321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 02/22/2024] [Accepted: 02/26/2024] [Indexed: 04/01/2024] Open
Abstract
Endophthalmitis is a rare but vision-threatening infection characterized by marked inflammation of intraocular fluids and tissues, uncommonly seen following surgery and intravitreal injection. Antimicrobials are used worldwide in the prophylaxis and treatment of bacterial and fungal infections of the eye and are standard treatment in the preoperative and postoperative care of surgical patients. However, antimicrobials are reported to be overprescribed in many parts of the world, which contributes to antimicrobial resistance (AMR). AMR complicates the prophylaxis and treatment of endophthalmitis. This article examines the prevalence and mechanisms of AMR in ocular microorganisms, emphasizing the importance of understanding AMR patterns for tailored treatments. It also explores prophylaxis and management strategies for endophthalmitis, with a discussion on the use of intracameral antibiotic administration. The use of prophylactic intracameral antibiotics during cataract surgery is common in many parts of the world but is still controversial in some locations, especially in the US. Finally, it highlights the role of stewardship in ophthalmology and its benefits in the treatment of endophthalmitis.
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Affiliation(s)
- Noraliz Garcia O’Farrill
- Department of Ophthalmology, University of Puerto Rico School of Medicine, San Juan, PR 00936, USA; (N.G.O.); (V.M.V.)
| | - Mariana Abi Karam
- Department of Ophthalmology, MetroHealth, Cleveland, OH 44109, USA;
- Department of Ophthalmology and Visual Sciences, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Victor M. Villegas
- Department of Ophthalmology, University of Puerto Rico School of Medicine, San Juan, PR 00936, USA; (N.G.O.); (V.M.V.)
| | - Harry W. Flynn
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Andrzej Grzybowski
- Institute for Research in Ophthalmology, Foundation for Ophthalmology Development, 61-553 Poznan, Poland;
| | - Stephen G. Schwartz
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL 33136, USA
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Yoshino Y. Enterococcus casseliflavus Infection: A Review of Clinical Features and Treatment. Infect Drug Resist 2023; 16:363-368. [PMID: 36714353 PMCID: PMC9879772 DOI: 10.2147/idr.s398739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 01/16/2023] [Indexed: 01/22/2023] Open
Abstract
Some Enterococcus species, including Enterococcus faecalis and E. faecium, are increasingly becoming a common cause of nosocomial infections, accounting for the majority of human enterococcal infections, while other species, such as E. casseliflavus, have also been shown to be pathogenic to humans due to the increase in immunocompromised patients. These infections vary widely in their mode of transmission, symptoms, and other characteristics. Treatment is difficult in some cases because enterococci are resistant to numerous antimicrobial agents. Enterococcus faecalis and E. faecium are the best-known opportunistic pathogens, but others, including E. casseliflavus, occasionally cause opportunistic infections. This review summarizes the clinical features of E. casseliflavus infections and discusses effective therapeutic strategies. Bacteremia was the most common form of E. casseliflavus infections. Because E. casseliflavus carries the VanC gene, which confers resistance to vancomycin, less resistant drugs such as ampicillin were found more effective in treating the bacteremia. The second most common form of E. casseliflavus infection was trauma-induced endophthalmitis. This was commonly reported in active young to middle-aged patients. Vitreoretinal surgery and local or systemic administration of sensitive antimicrobial agents seem to be key to successful treatment. Other conditions such as infective endocarditis, meningitis, peritonitis, and pyothorax have also been reported as forms of E. casseliflavus infection. This review clarifies the clinical features of E. casseliflavus infection and provides important insights into its treatment.
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Affiliation(s)
- Yusuke Yoshino
- Teikyo University, School of Medicine, Department of Microbiology and Immunology, Tokyo, Japan,Correspondence: Yusuke Yoshino, Teikyo University, School of Medicine, Department of Microbiology and Immunology, 2-11-1, Kaga, Itabashi, Tokyo, 173-8605, Japan, Tel +81-3-3964-1211, Email
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Friedman DZP, Chesdachai S, Shweta FNU, Mahmood M. Enterococcus gallinarum endophthalmitis and meningitis in an allogeneic hematopoietic stem cell transplant patient: A case report and literature review. JOURNAL OF THE ASSOCIATION OF MEDICAL MICROBIOLOGY AND INFECTIOUS DISEASE CANADA = JOURNAL OFFICIEL DE L'ASSOCIATION POUR LA MICROBIOLOGIE MEDICALE ET L'INFECTIOLOGIE CANADA 2021; 6:313-318. [PMID: 36338465 PMCID: PMC9629259 DOI: 10.3138/jammi-2021-0016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 07/28/2021] [Indexed: 06/16/2023]
Abstract
Endogenous endophthalmitis caused by Enterococcus gallinarum, an organism with intrinsic resistance to vancomycin, has rarely been reported. We present a case of persistent E. gallinarum bacteremia in a female recipient of hematopoietic stem cell transplant (HSCT) complicated by endophthalmitis and meningoventriculitis, resulting in a fatal outcome despite treatment with intravenous ampicillin and daptomycin. Treatment of endophthalmitis often presents a challenge due to the lack of options for antimicrobials with reliable ocular penetration. Therapeutic decisions can become particularly complex with the involvement of drug-resistant pathogens and host characteristics that limit the choice of antimicrobials due to drug toxicity. This case illustrates a rare manifestation of an opportunistic pathogen.
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Affiliation(s)
- Daniel ZP Friedman
- Division of Infectious Diseases, Mayo Clinic, Rochester, Minnesota, United States
- William J. von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, Minnesota, United States
| | - Supavit Chesdachai
- Division of Infectious Diseases, Mayo Clinic, Rochester, Minnesota, United States
| | - FNU Shweta
- Division of Infectious Diseases, Mayo Clinic, Rochester, Minnesota, United States
| | - Maryam Mahmood
- Division of Infectious Diseases, Mayo Clinic, Rochester, Minnesota, United States
- William J. von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, Minnesota, United States
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Susceptibility of bacterial endophthalmitis isolates to vancomycin, ceftazidime, and amikacin. Sci Rep 2021; 11:15878. [PMID: 34354181 PMCID: PMC8342408 DOI: 10.1038/s41598-021-95458-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 07/27/2021] [Indexed: 11/08/2022] Open
Abstract
Bacterial endophthalmitis is a rare intraocular infection, and prompt administration of intravitreal antibiotics is crucial for preventing severe vision loss. The retrospective study is to investigate the in vitro susceptibility to the antibiotics vancomycin, amikacin, and ceftazidime of bacterial endophthalmitis isolates in specimens at a tertiary referral center from January 1996 to April 2019 in Taiwan. Overall, 450 (49.9%) isolates were Gram positive, 447 (49.6%) were Gram negative, and 4 (0.4%) were Gram variable. In Gram-positive isolates, coagulase-negative staphylococci were the most commonly cultured bacteria (158, 35.1%), followed by Streptococci (100, 22.2%), Enterococci (75, 16.7%), and Staphylococcus aureus (70, 15.6%). In Gram-negative isolates, they were Klebsiella pneumoniae (166, 37.1%) and Pseudomonas aeruginosa (131, 29.3%). All Gram-positive organisms were susceptible to vancomycin, with the exception of one Enterococcus faecium isolate (1/450, 0.2%). Of the Gram-negative isolates, 96.9% and 93.7% were susceptible to ceftazidime and amikacin, respectively. Nine isolates (9/447, 2.0%) were multidrug-resistant Gram-negative bacteria, comprising K. pneumoniae (4/164, 2.4%), Acinetobacter baumannii (2/3, 67%), and Stenotrophomonas maltophilia (3/18, 17%). In conclusion, in vitro susceptibility testing revealed that vancomycin remains the suitable antibiotic treatment for Gram-positive endophthalmitis. Ceftazidime and amikacin provide approximately the same degree of Gram-negative coverage. Multidrug-resistant bacterial endophthalmitis was uncommon.
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Enterococcus faecalis Endophthalmitis: Clinical Settings, Antibiotic Susceptibility, and Management Outcomes. Microorganisms 2021; 9:microorganisms9050918. [PMID: 33923356 PMCID: PMC8146393 DOI: 10.3390/microorganisms9050918] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 04/17/2021] [Accepted: 04/22/2021] [Indexed: 12/13/2022] Open
Abstract
Enterococcus faecalis is known to cause severe acute endophthalmitis and often leads to poor visual outcomes in most ophthalmic infections. This retrospective study is to report the clinical settings, antimicrobial susceptibility patterns, and visual outcome of E. faecalis endophthalmitis at a tertiary referral institution in Taoyuan, Taiwan. E. faecalis endophthalmitis was diagnosed in 37 eyes of 37 patients. Post-cataract surgery was the most common cause (n = 27, 73%), followed by bleb-associated (n = 3, 8%), endogenous (n = 2, 5%), corneal ulcer-related (n = 2, 5%), post-vitrectomy (n = 1, 3%), post-pterygium excision (n = 1, 3%), and trauma (n = 1, 3%). Visual acuities upon presentation ranged from counting fingers to no light perception. Pars plana vitrectomy with intravitreal antibiotics were performed in 23 eyes (76%) as primary or secondary treatment. All isolates (37/37, 100%) were sensitive to vancomycin, penicillin, ampicillin, and teicoplanin. Six of 22 eyes (27%) were resistant to high-level gentamicin (minimum inhibitory concentration > 500 mg/L). Final visual acuities were better than 20/400 in 11 eyes (30%), 5/200 to hand motions in 4 eyes (11%), and light perception to no light perception in 22 eyes (59%). Three eyes were treated with evisceration. Compared with non-cataract subgroups, the post-cataract subgroup showed a significant difference of better visual prognosis (p = 0.016).
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Ishikawa H, Uchida K, Takesue Y, Mori J, Kinoshita T, Morikawa S, Okamoto F, Sawada T, Ohji M, Kanda T, Takeuchi M, Miki A, Kusuhara S, Ueda T, Ogata N, Sugimoto M, Kondo M, Yoshida S, Ogata T, Kimura K, Mitamura Y, Jujo T, Takagi H, Terasaki H, Sakamoto T, Sugisawa T, Komuku Y, Gomi F. Clinical Characteristics and Outcomes in 314 Japanese Patients with Bacterial Endophthalmitis: A Multicenter Cohort Study from J-CREST. Pathogens 2021; 10:pathogens10040390. [PMID: 33805010 PMCID: PMC8063932 DOI: 10.3390/pathogens10040390] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 03/18/2021] [Accepted: 03/21/2021] [Indexed: 12/25/2022] Open
Abstract
Bacterial endophthalmitis is an intraocular infection that causes rapid vison loss. Pathogens can infect the intraocular space directly (exogenous endophthalmitis (ExE)) or indirectly (endogenous endophthalmitis (EnE)). To identify predictive factors for the visual prognosis of Japanese patients with bacterial endophthalmitis, we retrospectively examined the bacterial endophthalmitis characteristics of 314 Japanese patients and performed statistics using these clinical data. Older patients, with significantly more severe clinical symptoms, were prevalent in the ExE group compared with the EnE group. However, the final best-corrected visual acuity (BCVA) was not significantly different between the ExE and EnE groups. Bacteria isolated from patients were not associated with age, sex, or presence of eye symptoms. Genus Streptococcus, Streptococcus pneumoniae, and Enterococcus were more prevalent in ExE patients than EnE patients and contributed to poor final BCVA. The presence of eye pain, bacterial identification, and poor BCVA at baseline were risk factors for final visual impairment.
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Affiliation(s)
- Hiroto Ishikawa
- Department of Ophthalmology, Hyogo College of Medicine, Nishinomiya 6638501, Japan; (T.S.); (Y.K.); (F.G.)
- Correspondence: ; Tel.: +81-798-45-6462
| | - Kazutaka Uchida
- Clinical Epidemiology, Hyogo College of Medicine, Nishinomiya 6638501, Japan;
| | - Yoshio Takesue
- Department of Infection Control and Prevention, Hyogo College of Medicine, Nishinomiya 6638501, Japan;
| | - Junya Mori
- Department of Ophthalmology, Sapporo City General Hospital, Sapporo 0608604, Japan; (J.M.); (T.K.)
| | - Takamasa Kinoshita
- Department of Ophthalmology, Sapporo City General Hospital, Sapporo 0608604, Japan; (J.M.); (T.K.)
| | - Shohei Morikawa
- Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, Tsukuba 3058576, Japan; (S.M.); (F.O.)
| | - Fumiki Okamoto
- Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, Tsukuba 3058576, Japan; (S.M.); (F.O.)
| | - Tomoko Sawada
- Department of Ophthalmology, Shiga University of Medical Science, Otsu 5202192, Japan; (T.S.); (M.O.)
| | - Masahito Ohji
- Department of Ophthalmology, Shiga University of Medical Science, Otsu 5202192, Japan; (T.S.); (M.O.)
| | - Takayuki Kanda
- Department of Ophthalmology, National Defense Medical College, Tokorozawa 3598513, Japan; (T.K.); (M.T.)
| | - Masaru Takeuchi
- Department of Ophthalmology, National Defense Medical College, Tokorozawa 3598513, Japan; (T.K.); (M.T.)
| | - Akiko Miki
- Department of Surgery, Division of Ophthalmology, Kobe University Graduate School of Medicine, Kobe 6500017, Japan; (A.M.); (S.K.)
| | - Sentaro Kusuhara
- Department of Surgery, Division of Ophthalmology, Kobe University Graduate School of Medicine, Kobe 6500017, Japan; (A.M.); (S.K.)
| | - Tetsuo Ueda
- Department of Ophthalmology, Nara Medical University School of Medicine, Kashihara 6348522, Japan; (T.U.); (N.O.)
| | - Nahoko Ogata
- Department of Ophthalmology, Nara Medical University School of Medicine, Kashihara 6348522, Japan; (T.U.); (N.O.)
| | - Masahiko Sugimoto
- Department of Ophthalmology, Mie University Graduate School of Medicine, Tsu 5148507, Japan; (M.S.); (M.K.)
| | - Mineo Kondo
- Department of Ophthalmology, Mie University Graduate School of Medicine, Tsu 5148507, Japan; (M.S.); (M.K.)
| | - Shigeo Yoshida
- Department of Ophthalmology, Kurume University School of Medicine, Kurume 8300011, Japan;
| | - Tadahiko Ogata
- Department of Ophthalmology, Graduate School of Medicine, Yamaguchi University, Ube 7558505, Japan; (T.O.); (K.K.)
| | - Kazuhiro Kimura
- Department of Ophthalmology, Graduate School of Medicine, Yamaguchi University, Ube 7558505, Japan; (T.O.); (K.K.)
| | - Yoshinori Mitamura
- Department of Ophthalmology, Tokushima University Graduate School, Tokushima 7708503, Japan;
| | - Tatsuya Jujo
- Department of Ophthalmology, St. Marianna University School of Medicine, Kawasaki 2168511, Japan; (T.J.); (H.T.)
| | - Hitoshi Takagi
- Department of Ophthalmology, St. Marianna University School of Medicine, Kawasaki 2168511, Japan; (T.J.); (H.T.)
| | - Hiroto Terasaki
- Department of Ophthalmology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima 8908520, Japan; (H.T.); (T.S.)
| | - Taiji Sakamoto
- Department of Ophthalmology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima 8908520, Japan; (H.T.); (T.S.)
| | - Takaaki Sugisawa
- Department of Ophthalmology, Hyogo College of Medicine, Nishinomiya 6638501, Japan; (T.S.); (Y.K.); (F.G.)
| | - Yuki Komuku
- Department of Ophthalmology, Hyogo College of Medicine, Nishinomiya 6638501, Japan; (T.S.); (Y.K.); (F.G.)
| | - Fumi Gomi
- Department of Ophthalmology, Hyogo College of Medicine, Nishinomiya 6638501, Japan; (T.S.); (Y.K.); (F.G.)
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PRODUCTION AND APPLICATION OF ANGIOSTATINS FOR THE TREATMENT OF OCULAR NEOVASCULAR DISEASES. BIOTECHNOLOGIA ACTA 2021. [DOI: 10.15407/biotech14.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Angiostatins comprise a group of kringle-containing proteolytically-derived fragments of plasminogen/plasmin, which act as potent inhibitory mediators of endothelial cells proliferation and migration. Angiostatins are involved in modulation of vessel growth in healthy tissues and various pathological conditions associated with aberrant neovascularization. The aim of the present paper was to summarize available information, including our own experimental data, on prospects of angiostatin application for treatment of ocular neovascular diseases (OND), focusing on retinal pathologies and corneal injury. In particular, literature data on prospective and retrospective studies, clinical trials and animal models relating to the pathophysiology, investigation and management of OND are described. Special emphasis was made on the laboratory approaches of production of different angiostatin isoforms, as well as comparison of antiangiogenic capacities of native and recombinant angiostatin polypeptides. Several studies reported that angiostatins may completely abolish pathologic angiogenesis in diabetic proliferative retinopathy without affecting normal retinal vessel development and without exhibiting adverse side effects. Angiostatins have been tested as a tool for corneal antiangiogenesis target therapy in order to manage diverse ocular surface pathological conditions induced by traumas, chemical burns, previous surgery, chronic contact lens wear, autoimmune diseases, keratitis and viral infections (herpes, COVID-19), corneal graft rejection, etc. Among all known angiostatin species, isolated K5 plasminogen fragment was shown to display the most potent inhibitory activity against proliferation of endothelial cells via triggering multiple signaling pathways, which lead to cell death and resulting angiogenesis suppression. Application of adenoviral genetic construct encoding angiostatin K5 as a promising tool for OND treatment illustrates a vivid example of upcoming revolution in local gene therapy. Further comprehensive studies are necessary to elucidate the clinical potential and optimal regimes of angiostatinbased intervention modalities for treating ocular neovascularization.
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Yan T, Ma Z, Liu J, Yin N, Lei S, Zhang X, Li X, Zhang Y, Kong J. Thermoresponsive GenisteinNLC-dexamethasone-moxifloxacin multi drug delivery system in lens capsule bag to prevent complications after cataract surgery. Sci Rep 2021; 11:181. [PMID: 33420301 PMCID: PMC7794611 DOI: 10.1038/s41598-020-80476-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 12/11/2020] [Indexed: 01/29/2023] Open
Abstract
Cataract surgery is the most common intraocular procedure. To decrease postsurgical inflammation, prevent infection and reduce the incidence of secondary cataract, we built a temperature-sensitive drug delivery system carrying dexamethasone, moxifloxacin and genistein nanostructured lipid carrier (GenNLC) modified by mPEG-PLA based on F127/F68 as hydrogel. Characterizations and release profiles of the drug delivery system were studied. In vitro functions were detected by CCK-8 test, immunofluorescence, wound-healing assay, real time-PCR and western blotting. The size of GenNLCs was 39.47 ± 0.69 nm in average with surface charges of - 4.32 ± 0.84 mV. The hydrogel gelation temperature and time were 32 °C, 20 s with a viscosity, hardness, adhesiveness and stringiness of 6.135 Pa.s, 54.0 g, 22.0 g, and 3.24 mm, respectively. Transmittance of the gel-release medium was above 90% (93.44 ± 0.33% to 100%) at range of 430 nm to 800 nm. Moxifloxacin released completely within 10 days. Fifty percent of dexamethasone released at a constant rate in the first week, and then released sustainably with a tapering down rate until day 30. Genistein released slowly but persistently with a cumulative release of 63% at day 40. The thermoresponsive hydrogel inhibited the proliferation, migration and epithelial-mesenchymal transition of SRA 01/04 cells, which were confirmed by testing CCK-8, wound-healing assay, western blot, real time-PCR (RT-PCR) and immunofluorescence. These results support this intracameral thermoresponsive in situ multi-drug delivery system with programmed release amounts and release profiles to cut down the need of eye drops for preventing inflammation or infection and to reduce posterior capsular opacification following cataract surgery.
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Affiliation(s)
- Tingyu Yan
- grid.412644.1Department of Ophthalmology, The Fourth Affiliated Hospital of China Medical University, No.11 Xinhua Road, Heping District, Shenyang, 110005 Liaoning Province China
| | - Zhongxu Ma
- grid.265021.20000 0000 9792 1228Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Vision Science, Clinical College of Ophthalmology, Tianjin Medical University, No. 4 Gansu Rd, Heping District, Tianjin, 300020 China
| | - Jingjing Liu
- grid.412644.1Department of Ophthalmology, The Fourth Affiliated Hospital of China Medical University, No.11 Xinhua Road, Heping District, Shenyang, 110005 Liaoning Province China
| | - Na Yin
- grid.412561.50000 0000 8645 4345Department of Pharmaceutics, Shenyang Pharmaceutical University, No.103 Wen Hua Road, Shenyang, 110016 China
| | - Shizhen Lei
- grid.412644.1Department of Ophthalmology, The Fourth Affiliated Hospital of China Medical University, No.11 Xinhua Road, Heping District, Shenyang, 110005 Liaoning Province China
| | - Xinxin Zhang
- grid.412644.1Department of Ophthalmology, The Fourth Affiliated Hospital of China Medical University, No.11 Xinhua Road, Heping District, Shenyang, 110005 Liaoning Province China
| | - Xuedong Li
- grid.412644.1Department of Ophthalmology, The Fourth Affiliated Hospital of China Medical University, No.11 Xinhua Road, Heping District, Shenyang, 110005 Liaoning Province China
| | - Yu Zhang
- grid.412561.50000 0000 8645 4345Department of Pharmaceutics, Shenyang Pharmaceutical University, No.103 Wen Hua Road, Shenyang, 110016 China
| | - Jun Kong
- grid.412644.1Department of Ophthalmology, The Fourth Affiliated Hospital of China Medical University, No.11 Xinhua Road, Heping District, Shenyang, 110005 Liaoning Province China
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Dave VP, Pappuru RR, Khader MA, Basu S, Tyagi M, Pathengay A. Endophthalmitis with opaque cornea managed with primary endoscopic vitrectomy and secondary keratoplasty: Presentations and outcomes. Indian J Ophthalmol 2020; 68:1587-1592. [PMID: 32709783 PMCID: PMC7640882 DOI: 10.4103/ijo.ijo_1840_19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Purpose: To describe the outcomes of endophthalmitis with opaque cornea managed with primary endoscopic vitrectomy and secondary keratoplasty. Methods: Retrospective consecutive interventional case series. All cases of endophthalmitis with opaque cornea which underwent endoscopic vitrectomy followed by secondary keratoplasty were analyzed. The study period was from Jan 2015 to March 2019. The outcome measures were resolution of infection, the magnitude of unnecessary keratoplasties avoided and corneal graft survival. The final anatomic and functional outcomes were reported and compared with relevant literature. Results: Seventy-eight eyes of 78 patients underwent endoscopic pars plana vitrectomy for endophthalmitis with the opaque cornea, of these 14 eyes of 14 patients were deemed eligible for further corneal intervention and were included in the study. The mean age at presentation was 42.27 ± 21.6 years (median 36 years). Etiology-wise, eight cases (57.14%) were post-trauma, three cases (21.42%) post-keratoplasty, two cases (14.28%) were endogenous, and one case (7.14%) following corneal dermoid excision and wound melt. Culture positivity was in 5/14 (35.71%). The mean interval between endoscopic vitrectomy and keratoplasty was 5.42 ± 2.69 months (median 3.5 months). The mean follow-up noted was 20.42 ± 11.45 months (median 17.5 months). The infection resolved in 100% of cases. Unnecessary keratoplasties were avoided in 64/78 (82%) cases due to the primary endoscopic intervention. The favorable anatomic outcome was seen in 11/14 (78.57%) of cases and favorable functional outcome in 8/14 (57.14%) cases. Conclusion: Endoscopic vitrectomy allows for early intervention in endophthalmitis with the opaque cornea. This facilitates early settlement of infection, globe preservation, greater graft survival, and lesser repeat posterior segment procedures.
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Affiliation(s)
- Vivek P Dave
- Smt. Kanuri Santhamma Center for Vitreoretinal Services, LV Prasad Eye Institute, Hyderabad, Telangana, India
| | - Rajeev R Pappuru
- Smt. Kanuri Santhamma Center for Vitreoretinal Services, LV Prasad Eye Institute, Hyderabad, Telangana, India
| | - Mohammad A Khader
- Smt. Kanuri Santhamma Center for Vitreoretinal Services; Academy for Eye Care Education, LV Prasad Eye Institute, Hyderabad, Telangana, India
| | - Sayan Basu
- The Cornea Institute, Kallam Anji Reddy Campus, LV Prasad Eye Institute, Hyderabad, Telangana, India
| | - Mudit Tyagi
- Smt. Kanuri Santhamma Center for Vitreoretinal Services, LV Prasad Eye Institute, Hyderabad, Telangana, India
| | - Avinash Pathengay
- Retina-Vitreous Services, GMR Varalakshmi Campus, LV Prasad Eye Institute, Visakhapatnam, Andhra Pradesh, India
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Khader MA, Pappuru RR, Dave VP. <p>Can Prompt Endoscopic Vitrectomy in Post-Trauma Endophthalmitis with Corneal Edema Avoid Unnecessary Keratoplasties?</p>. Int Med Case Rep J 2020; 13:279-284. [PMID: 32801939 PMCID: PMC7386801 DOI: 10.2147/imcrj.s258946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 06/30/2020] [Indexed: 11/24/2022] Open
Abstract
Objective To describe a series of prompt endoscopic vitrectomy in eyes with post-trauma endophthalmitis and hazy cornea. Methods Retrospective consecutive interventional case series. Cases of endophthalmitis with hazy cornea which underwent prompt endoscopic vitrectomy were analyzed. The study period was from August 2018 to April 2019. The final anatomic and functional outcomes are reported here. Results Four eyes of four patients were included. Mean age at presentation was 24.50±21.29 years (median 24 years). All cases were post-open globe injury. Microbiology showed smear positivity in 3/4 (75%) and culture positivity in 2/4 (50%). The antibiotic susceptibility was 100% for vancomycin and ceftazidime. Mean follow-up was 7.75±1.7 months (median 7.5 months). Favorable anatomic outcome was seen in 100% of cases and favorable functional outcome in 75% cases. Conclusion Endoscopic vitrectomy allows for early intervention in endophthalmitis post open-globe injuries. This enables early resolution of infection and avoids a need for unnecessary corneal interventions.
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Affiliation(s)
- Mohammad Abdul Khader
- Smt. Kanuri Santhamma Center for Vitreoretinal Diseases, LV Prasad Eye Institute, Hyderabad, India
- Academy for Eye Care Education, LV Prasad Eye Institute, Hyderabad, India
| | - Rajeev Reddy Pappuru
- Smt. Kanuri Santhamma Center for Vitreoretinal Diseases, LV Prasad Eye Institute, Hyderabad, India
| | - Vivek Pravin Dave
- Smt. Kanuri Santhamma Center for Vitreoretinal Diseases, LV Prasad Eye Institute, Hyderabad, India
- Correspondence: Vivek Pravin Dave Smt. Kanuri Santhamma Center for Vitreoretinal Diseases, LV Prasad Eye Institute, Hyderabad, IndiaTel +91-7680859900 Email
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