scholarly journals Recovery of Drug‐Resistant Influenza Virus from Immunocompromised Patients: A Case Series

2006 ◽  
Vol 193 (6) ◽  
pp. 760-764 ◽  
Author(s):  
Michael G. Ison ◽  
Larisa V. Gubareva ◽  
Robert L. Atmar ◽  
John Treanor ◽  
Frederick G. Hayden
Keyword(s):  
Influenza Virus ◽  
Case Series ◽  
Immunocompromised Patients ◽  
Drug Resistant

Community acquired pneumonia-current scenario among immunocompromised patients in a tertiary care hospital

2016 ◽  
Vol 5 (01) ◽  
pp. 4715
Author(s):  
A. V. Sowmya* ◽  
G. Jayalakshmi ◽  
David Agatha
Keyword(s):  
Diabetes Mellitus ◽  
Antimicrobial Therapy ◽  
Tertiary Care ◽  
Community Acquired Pneumonia ◽  
Polymicrobial Infection ◽  
Resistance Pattern ◽  
Care Hospital ◽  
Immunocompromised Patients ◽  
Drug Resistant ◽  
Etiologic Agents

Pneumonia is a common illness accounting for majority of hospitalizations worldwide with significant mortality and morbidity. Antimicrobial therapy, being the main stay of treatment, the choices of antibiotics depends on the nature of the etiologic agents and the host factors. The current study was aimed to identify the bacterial & fungal etiologic agents of Community Acquired Pneumonia (CAP) in Immunocompromised (IC) patients, with their antimicrobial resistant pattern and to analyze the associated immunocompromised states. Various respiratory samples from study group of 75 immunocompromised patients with features of pneumonia were collected, processed and the isolates were identified with their antimicrobial susceptibility& resistance pattern according to CLSI guidelines. The results were analyzed statistically. Diabetes mellitus is the most common immunocompromised state (48%) associated with CAP. Monomicrobial and polymicrobial infection rates were 80.36% and 19.64% respectively. Gram negative pathogens and fungal pathogens were identified in 60% and 25.37% of culture positive cases respectively. Diabetes mellitus is commonly found in association with polymicrobial infection (19.44%) and fungal infection (16.66%). Drug resistant strains comprise about 75% of MRSA strains, 72.72 % of ESBL producers and 3.44% of Amp C producers. As the number of elderly people with associated IC state is on rise, with change in the pattern of microbial etiologic agents causing CAP, a prior knowledge of the host and microbial factors will help in formulating empirical antimicrobial therapy and proper treatment thereby curbing the spread of infections by drug resistant pathogens and the associated morbidity and mortality.

scholarly journals Cutaneous Mucormycosis Arising in the Skin Folds of Immunocompromised Patients: A Case-Series

2021 ◽  
Author(s):  
Renajd Rrapi ◽  
Sidharth Chand ◽  
Rebecca Gaffney ◽  
Jennifer A. Lo ◽  
Jeffrey S. Smith ◽  
...  
Keyword(s):  
Case Series ◽  
Immunocompromised Patients ◽  
Cutaneous Mucormycosis

scholarly journals Neuraminidase Activity and Resistance of 2009 Pandemic H1N1 Influenza Virus to Antiviral Activity in Bronchoalveolar Fluid

2016 ◽  
Vol 90 (9) ◽  
pp. 4637-4646 ◽  
Author(s):  
Kanyarat Ruangrung ◽  
Ornpreya Suptawiwat ◽  
Kittipong Maneechotesuwan ◽  
Chompunuch Boonarkart ◽  
Warunya Chakritbudsabong ◽  
...  
Keyword(s):  
Influenza Virus ◽  
Antiviral Activity ◽  
H1n1 Virus ◽  
H1n1 Influenza ◽  
Surfactant Protein D ◽  
Pandemic H1n1 ◽  
Drug Resistant ◽  
Bronchoalveolar Fluid ◽  
Influenza Activity ◽  
Resistant Strains

ABSTRACTHuman bronchoalveolar fluid is known to have anti-influenza activity. It is believed to be a frontline innate defense against the virus. Several antiviral factors, including surfactant protein D, are believed to contribute to the activity. The 2009 pandemic H1N1 influenza virus was previously shown to be less sensitive to surfactant protein D. Nevertheless, whether different influenza virus strains have different sensitivities to the overall anti-influenza activity of human bronchoalveolar fluid was not known. We compared the sensitivities of 2009 pandemic H1N1, seasonal H1N1, and seasonal H3N2 influenza virus strains to inhibition by human bronchoalveolar lavage (BAL) fluid. The pandemic and seasonal H1N1 strains showed lower sensitivity to human BAL fluid than the H3N2 strains. The BAL fluid anti-influenza activity could be enhanced by oseltamivir, indicating that the viral neuraminidase (NA) activity could provide resistance to the antiviral defense. In accordance with this finding, the BAL fluid anti-influenza activity was found to be sensitive to sialidase. The oseltamivir resistance mutation H275Y rendered the pandemic H1N1 virus but not the seasonal H1N1 virus more sensitive to BAL fluid. Since only the seasonal H1N1 but not the pandemic H1N1 had compensatory mutations that allowed oseltamivir-resistant strains to maintain NA enzymatic activity and transmission fitness, the resistance to BAL fluid of the drug-resistant seasonal H1N1 virus might play a role in viral fitness.IMPORTANCEHuman airway secretion contains anti-influenza activity. Different influenza strains may vary in their susceptibilities to this antiviral activity. Here we show that the 2009 pandemic and seasonal H1N1 influenza viruses were less sensitive to human bronchoalveolar lavage (BAL) fluid than H3N2 seasonal influenza virus. The resistance to the pulmonary innate antiviral activity of the pandemic virus was determined by its neuraminidase (NA) gene, and it was shown that the NA inhibitor resistance mutation H275Y abolished this resistance of the pandemic H1N1 but not the seasonal H1N1 virus, which had compensatory mutations that maintained the fitness of drug-resistant strains. Therefore, the innate respiratory tract defense may be a barrier against NA inhibitor-resistant mutants, and evasion of this defense may play a role in the emergence and spread of drug-resistant strains.

scholarly journals Efficacy of transdermal rotigotine in chronic cluster headache: A case series

2018 ◽  
Vol 1 ◽  
pp. 251581631880969
Author(s):  
Cherubino Di Lorenzo ◽  
Lanfranco Pellesi ◽  
Gianluca Coppola ◽  
Vincenzo Parisi ◽  
Maurizio Evangelista ◽  
...  
Keyword(s):  
Cluster Headache ◽  
Case Series ◽  
Chronic Cluster Headache ◽  
Drug Resistant ◽  
Transdermal Patch ◽  
Full Resolution ◽  
Episodic Cluster Headache ◽  
Monoaminergic System ◽  
Rotigotine Transdermal Patch ◽  
Effective Treatments

Cluster headache (CH) is one of the most severe forms of headache, but the number of effective treatments is still limited. Recently, we reported the case of a drug-resistant CH patient responsive to the rotigotine transdermal patch, which is used in the treatment of Parkinson’s disease. This report formed the basis for a case series where other drug-resistant CH patients were treated with rotigotine. Here are the results of this study. Twenty-two CH patients underwent the treatment. Eight were episodic cluster headache (ECH) patients and 14 were chronic cluster headache (CCH) patients. Of the eight ECH patients, four reported that their CH had been stopped by the treatment. Of the 14 CCH patients, 11 were considered responders to the treatment (5 experienced a full resolution of headache, and 6 had a headache reduction of at least 50% in terms of mean monthly number of attacks). Our case series confirms the previous observation that rotigotine could be helpful in the treatment of CH. It may even influence the monoaminergic system that has a key role in the pathogenesis of CH.

scholarly journals Cases of cytomegalovirus retinitis in patients treated for cancer

2020 ◽  
Vol 2 (1) ◽  
pp. 69-74
Author(s):  
Marium Jamaluddin Ahmad ◽  
Tengku Ain Kamalden ◽  
Nurliza Khaliddin ◽  
Tajunisah Iqbal
Keyword(s):  
Cancer Treatment ◽  
Opportunistic Infection ◽  
Case Series ◽  
Cytomegalovirus Retinitis ◽  
Immunocompromised Patients ◽  
Blurred Vision ◽  
Cmv Retinitis ◽  
Frosted Branch Angiitis

Cytomegalovirus (CMV) retinitis is an opportunistic infection affecting immunocompromised patients. This case series describes 2 patients aged 19 and 10 years who were undergoing cancer treatment and were referred for complaints of worsening blurred vision. The retinal findings in the first patient showed multiple yellowishsubretinal areas with haemorrhages, while in the second patient there was presence of frosted branch angiitis. Confirmation of diagnosis was done using PCR of vitreous samples and blood CMV levels. Both tested negative for HIV. Both received intravitreal and systemic ganciclovir. It is important for ophthalmologists to consider CMVretinitis in all patients with any form of immunosuppression.

scholarly journals Cryptoccal meningitis in non-HIV, non-organ transplant diabetic patients

2021 ◽  
Vol 8 (4) ◽  
pp. 591
Author(s):  
Sneha Biradar ◽  
Balakrishna Teli
Keyword(s):  
Human Immunodeficiency Virus ◽  
Organ Transplant ◽  
Case Series ◽  
Central Nervous System Disease ◽  
Diabetic Patients ◽  
Immunocompromised Patients ◽  
Current Case ◽  
Infected People ◽  
System Disease ◽  
Immunodeficiency Virus

Cryptococcosis is an important opportunistic fungal infection and also cause of death due to central nervous system disease among patients with human immunodeficiency virus worldwide. Most of the cases occur in immunocompromised patients like HIV infected people, people with organ transplants and on immunosuppressants. Nowdays there is increase in cases of cryptoccal meningitis among diabetic patients. Current case series includes cryptococcal meningitis among diabetic patients after ruling out of other immunocompromised states. 

scholarly journals Large-Scale Sequence Analysis of M Gene of Influenza A Viruses from Different Species: Mechanisms for Emergence and Spread of Amantadine Resistance

2009 ◽  
Vol 53 (10) ◽  
pp. 4457-4463 ◽  
Author(s):  
Yuki Furuse ◽  
Akira Suzuki ◽  
Hitoshi Oshitani
Keyword(s):  
Influenza Virus ◽  
Influenza A ◽  
Drug Resistant ◽  
Human Influenza ◽  
Influenza A Viruses ◽  
M Gene ◽  
Drug Pressure ◽  
Human Influenza Virus ◽  
Selective Pressures ◽  
Amantadine Resistance

ABSTRACT Influenza A virus infects many species, and amantadine is used as an antiviral agent. Recently, a substantial increase in amantadine-resistant strains has been reported, most of which have a substitution at amino acid position 31 in the M2 gene. Understanding the mechanism responsible for the emergence and spread of antiviral resistance is important for developing a treatment protocol for seasonal influenza and for deciding on a policy for antiviral stockpiling for pandemic influenza. The present study was conducted to identify the existence of drug pressure on the emergence and spread of amantadine-resistant influenza A viruses. We analyzed data on more than 5,000 virus sequences and constructed a phylogenetic tree to calculate selective pressures on sites in the M2 gene associated with amantadine resistance (positions 26, 27, 30, and 31) among different hosts. The phylogenetic tree revealed that the emergence and spread of the drug-resistant M gene in different hosts and subtypes were independent and not through reassortment. For human influenza virus, positive selection was detected only at position 27. Selective pressures on the sites were not always higher for human influenza virus than for viruses of other hosts. Additionally, selective pressure on position 31 did not increase after the introduction of amantadine. Although there is a possibility of drug pressure on human influenza virus, we could not find positive pressure on position 31. Because the recent rapid increase in drug-resistant virus is associated with the substitution at position 31, the resistance may not be related to drug use.

Sign in / Sign up

Export Citation Format

Share Document