HCMV-DNA is detected more frequently than infectious virus in blood leucocytes of immunocompromised patients: A direct comparison of culture-immunofluorescence and PCR for detection of HCMV in clinical specimens

1992 ◽  
Vol 38 (4) ◽  
pp. 252-259 ◽  
Author(s):  
V. M. Ratnamohan ◽  
J. M. Mathÿs ◽  
A. McKenzie ◽  
A. L. Cunningham
Keyword(s):  
Infectious Virus ◽  
Immunocompromised Patients ◽  
Clinical Specimens

scholarly journals Effective Heat Inactivation of SARS-CoV-2

2020 ◽  
Author(s):  
Tony Wang ◽  
Christopher Lien ◽  
Shufeng Liu ◽  
Prabhuanand Selveraj
Keyword(s):  
Severe Acute Respiratory Syndrome ◽  
Healthcare Professionals ◽  
Infectious Virus ◽  
Heat Inactivation ◽  
Clinical Specimens ◽  
Global Pandemic ◽  
Human Sera ◽  
Laboratory Workers ◽  
Stool Samples ◽  
The Stability

The outbreak of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2 or 2019-nCoV) has quickly turned into a global pandemic. Infectious viruses had been isolated from oro- or naso-pharyngeal swabs, sputum and possibly stool samples of infected individuals. Handling these clinical specimens therefore poses a biosafety risk to both healthcare professionals and laboratory workers. In this study, we aimed to evaluate the stability of SARS-CoV-2 under different heat conditions and report that the virus is stable at 37 C for at least 24 hours. Heating at 56 C for 30 minutes, however, effectively inactivated the virus while preserved the stability of viral RNA in both human sera and sputum samples. These findings provide critical information regarding the biology of the virus as well as a practical way to inactivate infectious virus that is potentially found in clinical specimens.

A combined pseudoreplica-immunocytochemical technique for research and diagnostic virology

1990 ◽  
Vol 48 (3) ◽  
pp. 900-901
Author(s):  
Blayne Fritz ◽  
Stanley J. Naides ◽  
Kenneth Moore
Keyword(s):  
Phosphotungstic Acid ◽  
Immunogold Labelling ◽  
Uranyl Acetate ◽  
Distilled Water ◽  
Clinical Specimens ◽  
Tissue Sections ◽  
Specimen Retrieval ◽  
Transmission Electron ◽  
Viral Particles ◽  
Diagnostic Virology

The pseudoreplica method of staining viral particles for visualization by transmission electron microscopy is a very popular technique. The ability to concentrate clinical specimens while semi-embedding viral particles makes it especially well suited for morphologic and diagnostic virology. Immunolabelling viral particles with colloidal gold is a technique frequently employed by both research and diagnostic virologists. We have characterized a procedure which provides the advantage of both by modifying and combining pseudoreplica staining and immunogold labelling.Modification of specimen retrieval and delay of staining allows us to utilize pseudoreplica processed specimens within our standard immunogold labelling protocol. In brief, we absorbed samples onto 2% agarose, added.25% Formvar and wicked dry. We then floated the Formvar-virus film onto double distilled water, added grids and retrieved with parafilm. The Formvar-virus specimens were then treated as thin tissue sections within our standard two stage immunolabelling protocol. Following completion of immunogold labelling; each grid was negatively stained with phosphotungstic acid or uranyl acetate contrast stains.

Prevalence of Vancomycin Resistant Enterococci in Various Clinical Specimens in Tertiary Care Hospital in North Delhi

2012 ◽  
Vol 3 (3) ◽  
pp. 141-144
Author(s):  
Swati Chaudhary ◽  
◽  
Swastika Aggarwal ◽  
Pawan Kumar ◽  
SK Aggarwal SK Aggarwal ◽  
...  
Keyword(s):  
Tertiary Care Hospital ◽  
Tertiary Care ◽  
Care Hospital ◽  
Clinical Specimens ◽  
Vancomycin Resistant Enterococci ◽  
Vancomycin Resistant

A Rare Case of Tuberculous Prostatitis

2016 ◽  
Vol 1 (2) ◽  
pp. 33
Author(s):  
Nurul Yaqeen Mohd Esa ◽  
Mohammad Hanafiah ◽  
Marymol Koshy ◽  
Hilmi Abdullah ◽  
Ahmad Izuanuddin Ismail ◽  
...  
Keyword(s):  
Rare Case ◽  
Correct Diagnosis ◽  
Immunocompetent Patient ◽  
Clinical Suspicion ◽  
Tuberculosis Infection ◽  
Advanced Age ◽  
Immunocompromised Patients ◽  
Prostatic Biopsy ◽  
High Clinical Suspicion

Tuberculous prostatitis is an uncommon form of tuberculosis infection. It is commonly seen in immunocompromised patients and in those of middle or advanced age. The diagnosis is often not straight forward due to the nature of its presentation. We report a case of tuberculous prostatitis in a young, healthy and immunocompetent patient, who initially presented with respiratory features, followed by episodes of seizures and testicular swelling. He was finally diagnosed with tuberculous prostatitis after prostatic biopsy. This case illustrates that in a high TB prevalence environment, when symptoms warrant, there should be a high clinical suspicion coupled with a thorough approach in order to arrive at a correct diagnosis of TB prostatitis.

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