scholarly journals Dexamethasone ameliorates severe pneumonia but slightly enhances viral replication in the lungs of SARS-CoV-2-infected Syrian hamsters

Author(s):  
Lunzhi Yuan ◽  
Ming Zhou ◽  
Jian Ma ◽  
Xuan Liu ◽  
Peiwen Chen ◽  
...  
Author(s):  
Michael P. Goheen ◽  
Marilyn S. Bartlett ◽  
James W. Smith

Studies of the biology of Pneumocystis carinii (PC) are of increasing importance because this extracellular pathogen is a frequent source of severe pneumonia in patients with acquired immunodeficiency syndrome (AIDS) and is a leading cause of mortality in these patients. Immunoelectron microscopic localization of antigenic sites on the surface of PC would improve the understanding of these sites and their role in pathenogenisis of the disease and response to chemotherapy. The purpose of this study was to develop a methodology for visualizing immunoreactive sites on PC with transmission electron microscopy (TEM) using immunogold labeled probes.Trophozoites of PC were added to spinner flask cultures and allowed to grow for 7 days, then aliquots of tissue culture fluid were centrifuged at 12,000 RPM for 30 sec. Pellets of organisims were fixed in either 1% glutaraldehyde, 0.1% glutaraldehyde-4% paraformaldehyde, or 4% paraformaldehyde for 4h. All fixatives were buffered with 0.1M Na cacodylate and the pH adjusted to 7.1. After fixation the pellets were rinsed in 0.1M Na cacodylate (3X), dehydrated with ethanol, and immersed in a 1:1 mixture of 95% ethanol and LR White resin.


2006 ◽  
Vol 39 (16) ◽  
pp. 40
Author(s):  
BRUCE JANCIN
Keyword(s):  

2016 ◽  
Vol 54 (12) ◽  
pp. 1343-1404
Author(s):  
V Duhan ◽  
V Khairnar ◽  
SK Friedrich ◽  
C Hardt ◽  
PA Lang ◽  
...  

2000 ◽  
Vol 21 (03) ◽  
pp. 295-304 ◽  
Author(s):  
Emanuel N. Vergis ◽  
Efsun Akbas ◽  
Victor L. Yu
Keyword(s):  

2019 ◽  
Vol 2 (31) ◽  
pp. 46-51
Author(s):  
D. A. Temerov ◽  
L. V. Vorobyova ◽  
S. V. Vyzhevsky ◽  
S. B. Savchenkov ◽  
Yu. V. Marchenkov

The article presents a clinical case of successful treatment of a patient with prolonged asthmatic status. The pathogenesis of purulent-septic and other life-threatening complications developing as a result of the above critical condition is described. The positive effect of a differentiated approach in conducting respiratory support depending on the stage of the disease is justified: at the beginning, when airway obstruction is in the foreground, and in the future, when restrictive respiratory disorders develop. When conducting respiratory support, the most reasonable methods for ensuring airway patency were selected. The necessity of neurovegetative blockade and myoplegia for the prevention of pulmonary barotrauma during respiratory support by aggressive ventilation modes and with the goal of antihypoxic protection of the brain is emphasized. During the treatment of the patient, it was confirmed that the optimal regime for obstruction of the bronchi is forced volume-cyclic ventilation of the lungs to provide the necessary minute volume of breathing, and in severe pneumonia, in the case of relief of bronchial obstruction, respiratory support is carried out in pressure control mode for better air-oxygen mixture distribution in the airways. The need for early tracheostomy and daily therapeutic fibrobronchoscopy to ensure airway patency and treat pneumonia has been confirmed.


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