Porins in the Inflammatory and Immunological Response Following Salmonella Infections

Coronavirus disease 2019 (COVID-19) is a new infectious respiratory disease that has caused the ongoing global pandemic. The primary purpose of this article is to describe evolving clinical epidemiology of COVID-19, including 1) infection and testing, 2) clinical spectrum including classification of clinical type, asymptomatic cases, severe cases and comorbidity, and clinical and immunological response, 3) regional variation in clinical presentation, 4) population distribution by age, sex, and occupation, and finally, 5) case-fatality. This content may provide important information on detailed clinical type and presentation of the disease, in which appropriate clinical outcomes can be derived for developing prevention strategies and clinical studies or trials that aim to test potential therapeutics or products for different patient populations.

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Impact of Antibiotics on the Intestinal Microbiota and on the Treatment of Shiga-toxin-Producing Escherichia coli and Salmonella Infections

Current Pharmaceutical Design ◽

10.2174/13816128113196660730 ◽

2014 ◽

Vol 20 (28) ◽

pp. 4535-4548 ◽

Cited By ~ 8

Author(s):

Jolanta Szych ◽

Tomasz Wo.lkowicz ◽

Roberto Ragione ◽

Grzegorz Madajczak

Keyword(s):

Escherichia Coli ◽

Intestinal Microbiota ◽

Shiga Toxin ◽

Salmonella Infections

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Computational Evidences of Phytochemical Mediated Disruption of PLpro Driven Replication of SARS-CoV-2: A Therapeutic Approach Against COVID-19

Current Pharmaceutical Biotechnology ◽

10.2174/1389201021999201110204116 ◽

2020 ◽

Vol 21 ◽

Author(s):

Acharya Balkrishna ◽

Rashmi Mittal ◽

Vedpriya Arya

Keyword(s):

Molecular Docking ◽

Md Simulation ◽

Bond Distance ◽

Immunological Response ◽

Docking Study ◽

Receptor Interaction ◽

Molecular Docking Study ◽

Replication Process ◽

Stable Conformation ◽

Distance Analysis

Background:: COVID-19 caused by SARS-CoV-2 has been declared as global pandemic by WHO. Comprehensive analysis of this unprecedented outbreak may help to fight against the disease and may play a pivotal role in decreasing the mortality rate linked with it. Papain like protease (PLpro), a multifunctional polyprotein facilitates the replication of SARS-CoV-2 and evades it from the host immunological response by antagonizing cytokines, interferons and may be considered as potential drug target to combat the current pandemic. Methods:: Natural moieties obtained from medicinal plants were analysed for their potency to target PLpro of SARS-CoV-2 by molecular docking study and were compared with synthetic analogs named as remdesivir, chloroquine and favipiravir. The stability of complexes of top hits was analysed by MD Simulation and interaction energy was calculated. Furthermore, average RMSD values were computed and deepsite ligand binding pockets were predicted using Play Molecule. Drug like abilities of these moieties were determined using ADMET and bond distance between the ligand and active site was assessed to predict the strength of interaction. Results:: Nimbocinol (-7.6 Kcal/mol) and sage (-7.3 Kcal/mol) exhibited maximum BA against PLpro SARS-CoV-2 as evident from molecular docking study which was found to be even better than remdesivir (-6.1 Kcal/mol), chloroquine (-5.3 Kcal/mol) and favipiravir (-5.7 Kcal/mol). Both nimbocinol-PLpro and sage-PLpro SARS-CoV-2 complex exhibited stable conformation during MD Simulation of 101ns at 310 K and potential, kinetic and electrostatic interaction energies were computed which was observed to be concordant with results of molecular docking study. RMSD average values were found to be 0.496 ± 0.015 Å and 0.598 ± 0.023 Å for nimbocinol and sage respectively thus revealing that both the deviation and fluctuations during MD Simulation were observed to be least. Deepsite prediction disclosed that both compounds occupied cryptic pockets in receptor and non-bond distance analysis revealed the formation of hydrogen bonds during ligand-receptor interaction. ADMET exploration further validated the drug like properties of these compounds. Conclusion:: Present study revealed that active constituents of Azadirachta indica and Salvia officinalis can be potentially used to target SARS-CoV-2 by hindering its replication process.

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Fournier’s gangrene due to Salmonella Typhimurium in a healthy male: a rare aberrant infection

Infectious Disorders - Drug Targets ◽

10.2174/1871526520666201117143421 ◽

2020 ◽

Vol 20 ◽

Author(s):

Varsha Gupta ◽

Lipika Singhal ◽

Kritika Pal ◽

Mani Bhushan ◽

Rajeev Sharma ◽

...

Keyword(s):

Salmonella Typhimurium ◽

Systemic Disease ◽

External Genitalia ◽

Fournier’S Gangrene ◽

The Body ◽

Healthy Male ◽

Fournier's Gangrene ◽

Salmonella Infections ◽

Chief Complaints ◽

Human Infections

Introduction: Human Salmonella infections have been classically distinguised into diseases caused by typhoidal and non-typhoidal salmonella (NTS). Typhiodal salmonella includes S. enterica serovars Typhi and Paratyphi that cause the systemic disease but are restricted to human infections, while NTS consists mainly of other serovars that predominantly cause self-limiting gastroenteritis in humans. Localisation of foci with persisting infection occurs due to dissemination of the bacteria throughout the body and can cause a variety of rare clinical syndromes at aberrant sites. Fournier’s gangrene, a rapidly progressive, often fatal, necrotizing fasciitis of the external genitalia and perineum due to Salmonella Typhimurium, is a rare manifestation and has never been reported. Case: A 22-year-old male, apparently healthy patient with no relevant past medical history presented to surgical emergency with chief complaints of swelling of bilateral scrotal area. Infective etiology was considered and a diagnosis of fournier’s gangrene was made. Pure growth of Salmonella Typhimurium was obtained after repeated subculture and was identified biochemically and on serotyping, as Salmonella enterica serotype Typhimurium using specific antisera. Conclusion: In our case report, we describe a case of fournier’s gangrene due to Salmonella Typhimurium in an otherwise healthy male to highlight the unusual presentation of Non typhoidal salmonellae at an aberrant site. We also emphasize the importance of using selective media like Selenite F broth for isolation of Salmonella Typhimurium from a pus sample.

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014 Does TB treatment alter virological and immunological response to HAART?

HIV Medicine ◽

10.1046/j.1468-1293.2000.00024-27.x ◽

2000 ◽

Vol 1 (3) ◽

pp. 170-170

Author(s):

Gl Dean ◽

Sg Edwards ◽

L Navaratne ◽

G Matthews ◽

Ef Fox ◽

...

Keyword(s):

Immunological Response ◽

Tb Treatment

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Comparative Genomic Analysis of 450 Strains of Salmonella enterica Isolated from Diseased Animals

Genes ◽

10.3390/genes11091025 ◽

2020 ◽

Vol 11 (9) ◽

pp. 1025

Author(s):

Shaohua Zhao ◽

Cong Li ◽

Chih-Hao Hsu ◽

Gregory H. Tyson ◽

Errol Strain ◽

...

Keyword(s):

Resistance Genes ◽

Bacterial Infections ◽

Genomic Analysis ◽

Heavy Metal Resistance ◽

Metal Resistance ◽

Comparative Genomic ◽

Salmonella Infections ◽

Antimicrobial Resistance Genes ◽

Salmonella Pathogenicity Islands ◽

Shed Light

Salmonella is a leading cause of bacterial infections in animals and humans. We sequenced a collection of 450 Salmonella strains from diseased animals to better understand the genetic makeup of their virulence and resistance features. The presence of Salmonella pathogenicity islands (SPIs) varied by serotype. S. Enteritidis carried the most SPIs (n = 15), while S. Mbandaka, S. Cerro, S. Meleagridis, and S. Havana carried the least (n = 10). S. Typhimurium, S. Choleraesuis, S. I 4,5,12:i:-, and S. Enteritidis each contained the spv operon on IncFII or IncFII-IncFIB hybrid plasmids. Two S. IIIa carried a spv operon with spvD deletion on the chromosome. Twelve plasmid types including 24 hybrid plasmids were identified. IncA/C was frequently associated with S. Newport (83%) and S. Agona (100%) from bovine, whereas IncFII (100%), IncFIB (100%), and IncQ1 (94%) were seen in S. Choleraesuis from swine. IncX (100%) was detected in all S. Kentucky from chicken. A total of 60 antimicrobial resistance genes (ARGs), four disinfectant resistances genes (DRGs) and 33 heavy metal resistance genes (HMRGs) were identified. The Salmonella strains from sick animals contained various SPIs, resistance genes and plasmid types based on the serotype and source of the isolates. Such complicated genomic structures shed light on the strain characteristics contributing to the severity of disease and treatment failures in Salmonella infections, including those causing illnesses in animals.

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