scholarly journals Two Cases of Endogenous Endophthalmitis Caused by Gram-Positive Bacteria with Good Visual Outcome

2010 ◽  
Vol 1 (2) ◽  
pp. 56-62 ◽  
Author(s):  
Machiko Itoh ◽  
Junko Ikewaki ◽  
Kenichi Kimoto ◽  
Yuji Itoh ◽  
Kei Shinoda ◽  
...  
Keyword(s):  
Visual Outcome ◽  
Endogenous Endophthalmitis ◽  
Gram Positive ◽  
Gram Positive Bacteria ◽  
Good Visual Outcome

scholarly journals Treatment of Bilateral Endogenous Aspergillus Endophthalmitis with Multiple Intravitreal Voriconazole Injections with Good Visual Outcome

2021 ◽  
pp. 1002-1007
Author(s):  
Inas F. Aboobakar ◽  
Sally S. Ong ◽  
Akosua Nti ◽  
Kim Jiramongkolchai ◽  
J. Fernando Arevalo
Keyword(s):  
Visual Outcome ◽  
Intravitreal Injections ◽  
Endogenous Endophthalmitis ◽  
Visual Outcomes ◽  
Good Visual Outcome ◽  
The Right ◽  
Final Visual Outcome

Endogenous endophthalmitis caused by <i>Aspergillus</i> species tends to be very aggressive, often leading to devastating visual outcomes. Historically, intravitreal amphotericin injections have played a central role in management, but with variable visual outcomes and a risk of toxicity. Limited reports suggest that use of intravitreal voriconazole is a safe and efficacious alternative, though these cases were treated with only few intravitreal injections. Here, we report a case of bilateral endogenous <i>Aspergillus</i> endophthalmitis treated with 8 intravitreal voriconazole injections in the right eye and 11 in the left eye with good best-corrected final visual outcome (20/50 right eye and 20/40 left eye).

GOOD VISUAL OUTCOME AFTER LISTERIA MONOCYTOGENES ENDOGENOUS ENDOPHTHALMITIS

Retina ◽  
1999 ◽  
Vol 19 (6) ◽  
pp. 566-567 ◽  
Author(s):  
VINCENT A. DERAMO ◽  
GAURAV K. SHAH ◽  
MARK GARDEN ◽  
JOSEPH I. MAGUIRE
Keyword(s):  
Listeria Monocytogenes ◽  
Visual Outcome ◽  
Endogenous Endophthalmitis ◽  
Good Visual Outcome

scholarly journals Causative Microorganisms of Infectious Endophthalmitis: A 5-Year Retrospective Study

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Fang Duan ◽  
Kaili Wu ◽  
Jingyu Liao ◽  
Yongxin Zheng ◽  
Zhaohui Yuan ◽  
...  
Keyword(s):  
Endogenous Endophthalmitis ◽  
Gram Negative Bacteria ◽  
Postoperative Endophthalmitis ◽  
Bacterial Isolates ◽  
Gram Positive ◽  
Gram Negative ◽  
Gram Positive Bacteria ◽  
Predominant Species ◽  
Posttraumatic Endophthalmitis ◽  
Infectious Endophthalmitis

This study aimed to identify the microbial etiology of infectious endophthalmitis and to determine the antibacterial susceptibilities of bacterial isolates at an eye hospital in South China. A retrospective analysis was carried out on 330 patients with clinically diagnosed infectious endophthalmitis who underwent microbiological evaluation from January 2010 to December 2014. Of the 330 patients, 193 patients (58.5%) had posttraumatic endophthalmitis, 67 patients (20.3%) had postoperative endophthalmitis, 61 patients (18.5%) had endogenous endophthalmitis, and 9 patients (2.7%) had postcorneal infective endophthalmitis. Of the 105 cases (31.8%) of culture-positive endophthalmitis, 79 cases (75.2%) had bacterial growth and 26 cases (24.8%) had fungal growth. In posttraumatic endophthalmitis, Gram-positive bacteria were the predominant species, followed by Gram-negative bacteria and fungi. In endogenous endophthalmitis, Gram-negative bacteria were the predominant species, followed by fungi and Gram-positive bacteria. In postsurgical endophthalmitis, all infections were bacterial. However, in postcorneal infective endophthalmitis, all infections were fungal. Overall, levofloxacin showed the highest activity against bacterial isolates. There was a significant difference in the susceptibility to tobramycin between the isolates from posttraumatic and postoperative endophthalmitis (p<0.05). The results of this study identify the microbial spectrum of infectious endophthalmitis in this clinical setting.

Endogenous endophthalmitis and liver abscesses

2012 ◽  
Vol 11 (1) ◽  
pp. 27-27
Author(s):  
S Koay ◽  
◽  
S Jain ◽  
I Cropley ◽  
H Petrushkin ◽  
...  
Keyword(s):  
Risk Factors ◽  
Early Diagnosis ◽  
Diverticular Disease ◽  
Visual Outcome ◽  
Endogenous Endophthalmitis ◽  
Medical Comorbidities ◽  
Streptococcus Anginosus ◽  
Liver Abscesses ◽  
Good Visual Outcome ◽  
Prompt Diagnosis

Abstract We present a case of endogenous endophthalmitis secondary to liver abscesses, in a patient with no previous medical comorbidities or risk factors for immunosuppression. The patient presented with acute painless loss of vision and feeling generally unwell. Investigations revealed Streptococcus anginosus-constellatus bacteraemia, and evidence of diverticular disease that likely predisposed to the liver abscesses. Due to prompt diagnosis and administration of antibiotics, the patient had a good visual outcome. This case highlights the importance of being aware of endogenous endophthalmitis, as early diagnosis and prompt administration of antibiotics will optimise visual outcomes.

scholarly journals A 14-Year Retrospective Analysis of Endogenous Endophthalmitis in a Tertiary Referral Center of Southern Thailand

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Patama Bhurayanontachai ◽  
Phingphan Klongthanakit
Keyword(s):  
Visual Acuity ◽  
Visual Outcome ◽  
Patient Characteristics ◽  
Endogenous Endophthalmitis ◽  
Light Perception ◽  
Gram Positive ◽  
Gram Negative ◽  
Visual Outcomes ◽  
Presenting Symptoms ◽  
Final Visual Outcome

Purpose. To investigate patient characteristics, clinical features, common causative organisms, and visual acuity outcomes in endogenous endophthalmitis. Methods. This was a retrospective chart analysis of patients with endogenous endophthalmitis between January 2006 and December 2019. Collected data included basic patient characteristics, presenting symptoms, causative organisms, treatments, and 3-month and 1-year visual outcomes. Results. Twenty-nine eyes of 27 patients were included in the study. The mean age of the patients was 45.4 ± 19.9 years, and 63% were female. Visual acuity at presentation ranged from counting fingers to no light perception. Systemic comorbidities presented in 66.7% of the patients, the majority of which were related to diabetes mellitus (48.1%). The most common primary infection was a urinary tract infection. Positive blood cultures were identified in 48.1% of patients, and positive cultures from vitreous and aqueous samples were identified in 59.3% and 31.6% of eyes, respectively. Among all the specimens, Gram-positive bacteria were identified in 55.5%, Gram-negative bacteria in 22.2%, fungi in 14.8%, and mixed organisms in 7.4%. Among ocular specimens, 61.1% contained Gram-positive organisms, 16.7% contained Gram-negative organisms, and 22.2% contained fungi. Streptococcus spp. was the most common causative organism. From 29 eyes, 18 (62.1%) underwent vitrectomy, and 12 (42.9%) underwent either evisceration or enucleation. Positive vitreous culture was significantly associated with unfavorable final visual outcome. Final visual acuity ranged from 20/125 to no light perception. Although visual improvement at 3 months was significantly better in younger patients, this had no impact on final visual outcome at 1 year. Conclusion. Eyes with positive vitreous cultures had significantly poorer visual outcomes. Despite full treatment coverage, visual prognosis was extremely poor and the rates of blindness and evisceration/enucleation were still high.

Influence of Cell Wall Composition on the Fossilisation of Bacteria and the Implications for the Search for Early Life Forms

1997 ◽  
Vol 161 ◽  
pp. 491-504 ◽  
Author(s):  
Frances Westall
Keyword(s):  
Cell Wall ◽  
Life Forms ◽  
Cation Binding ◽  
Positive Bacterium ◽  
Gram Positive ◽  
Gram Positive Bacteria ◽  
Transmission Electron ◽  
Hydrothermal Sediments ◽  
Identification Of Bacteria ◽  
The Difference

AbstractThe oldest cell-like structures on Earth are preserved in silicified lagoonal, shallow sea or hydrothermal sediments, such as some Archean formations in Western Australia and South Africa. Previous studies concentrated on the search for organic fossils in Archean rocks. Observations of silicified bacteria (as silica minerals) are scarce for both the Precambrian and the Phanerozoic, but reports of mineral bacteria finds, in general, are increasing. The problems associated with the identification of authentic fossil bacteria and, if possible, closer identification of bacteria type can, in part, be overcome by experimental fossilisation studies. These have shown that not all bacteria fossilise in the same way and, indeed, some seem to be very resistent to fossilisation. This paper deals with a transmission electron microscope investigation of the silicification of four species of bacteria commonly found in the environment. The Gram positiveBacillus laterosporusand its spore produced a robust, durable crust upon silicification, whereas the Gram negativePseudomonas fluorescens, Ps. vesicularis, andPs. acidovoranspresented delicately preserved walls. The greater amount of peptidoglycan, containing abundant metal cation binding sites, in the cell wall of the Gram positive bacterium, probably accounts for the difference in the mode of fossilisation. The Gram positive bacteria are, therefore, probably most likely to be preserved in the terrestrial and extraterrestrial rock record.

Microanatomy of the Periplasm of Bacillus Licheniformis

1971 ◽  
Vol 29 ◽  
pp. 262-263
Author(s):  
B.K. Ghosh
Keyword(s):  
Cell Wall ◽  
Plasma Membrane ◽  
Bacillus Licheniformis ◽  
External Environment ◽  
Permeability Barrier ◽  
Periplasmic Space ◽  
Modified Technique ◽  
Gram Positive ◽  
Gram Negative ◽  
Gram Positive Bacteria

Periplasm of bacteria is the space outside the permeability barrier of plasma membrane but enclosed by the cell wall. The contents of this special milieu exterior could be regulated by the plasma membrane from the internal, and by the cell wall from the external environment of the cell. Unlike the gram-negative organism, the presence of this space in gram-positive bacteria is still controversial because it cannot be clearly demonstrated. We have shown the importance of some periplasmic bodies in the secretion of penicillinase from Bacillus licheniformis.In negatively stained specimens prepared by a modified technique (Figs. 1 and 2), periplasmic space (PS) contained two kinds of structures: (i) fibrils (F, 100 Å) running perpendicular to the cell wall from the protoplast and (ii) an array of vesicles of various sizes (V), which seem to have evaginated from the protoplast.

Rapid demonstration of septic or infectious arthritis due to Gram-negative bacteria

1992 ◽  
Vol 50 (1) ◽  
pp. 686-687
Author(s):  
Jacob S. Hanker ◽  
Paul R. Gross ◽  
Beverly L. Giammara
Keyword(s):  
Chronic Arthritis ◽  
Blood Cultures ◽  
Gram Negative Bacteria ◽  
Infectious Arthritis ◽  
Bacterial Arthritis ◽  
Gram Positive ◽  
Gram Negative ◽  
Gram Positive Bacteria

Blood cultures are positive in approximately only 50 per cent of the patients with nongonococcal bacterial infectious arthritis and about 20 per cent of those with gonococcal arthritis. But the concept that gram-negative bacteria could be involved even in chronic arthritis is well-supported. Gram stains are more definitive in staphylococcal arthritis caused by gram-positive bacteria than in bacterial arthritis due to gram-negative bacteria. In the latter situation where gram-negative bacilli are the problem, Gram stains are helpful for 50% of the patients; they are only helpful for 25% of the patients, however, where gram-negative gonococci are the problem. In arthritis due to gram-positive Staphylococci. Gramstained smears are positive for 75% of the patients.

Optimization of total RNA extraction from Gram-positive bacteria (coagulase-negative staphylococci) for expression studies

2009 ◽  
Vol 22 (2) ◽  
pp. 35-38
Author(s):  
Rafał Sawicki ◽  
Magdalena Stankevič ◽  
Grażyna Ginalska
Keyword(s):  
Rna Extraction ◽  
Coagulase Negative Staphylococci ◽  
Gram Positive ◽  
Total Rna ◽  
Gram Positive Bacteria ◽  
Expression Studies ◽  
Total Rna Extraction

Antibacterial activity of magnesium oxide nanoparticles prepared by Calcination method

2019 ◽  
Vol 10 (03) ◽  
Author(s):  
Elaf Ayad Kadhem ◽  
Miaad Hamzah Zghair ◽  
Sarah , Hussam H. Tizkam, Shoeb Alahmad Salih Mahdi ◽  
Hussam H. Tizkam ◽  
Shoeb Alahmad
Keyword(s):  
Antibacterial Activity ◽  
Magnesium Oxide ◽  
Diffusion Method ◽  
Oxide Nanoparticles ◽  
Gram Negative Bacteria ◽  
Gram Positive ◽  
Gram Negative ◽  
Gram Positive Bacteria ◽  
Magnesium Oxide Nanoparticles ◽  
Agar Disc

magnesium oxide nanoparticles (MgO NPs) were prepared by simple wet chemical method using different calcination temperatures. The prepared NPs were characterized by Electrostatic Discharge (ESD), Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD). It demonstrates sharp intensive peak with the increase of crystallinty and increase of the size with varying morphologies with respect to increase of calcination temperature. Antibacterial studies were done on gram negative bacteria (E.coli) and gram positive bacteria (S.aureus) by agar disc diffusion method. The zones of inhibitions were found larger for gram positive bacteria than gram negative bacteria, this mean, antibacterial MgO NPs activity more active on gram positive bacteria than gram negative bacteria because of the structural differences. It was found that antibacterial activity of MgO NPs was found it has directly proportional with their concentration.

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