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Medicine and Health Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

2021

Aga Khan University

Infectious Disease

Infectious disease

Articles 1 - 3 of 3

Full-Text Articles in Medicine and Health Sciences

Upregulated Type I Interferon Responses In Asymptomatic Covid-19 Infection Are Associated With Improved Clinical Outcome, Kiran I. Masood, Maliha Yameen, Javeria Ashraf, Saba Shahid, Syed Faisal Mahmood, Asghar Nasir, Nosheen Nasir, Bushra Jamil, Najia Karim Ghanchi, Iffat Khanum, Safina Abdul Razzak, Akber Kanji, Rabia Hussain, Martin E. Rottenberg, Zahra Hasan Nov 2021

Upregulated Type I Interferon Responses In Asymptomatic Covid-19 Infection Are Associated With Improved Clinical Outcome, Kiran I. Masood, Maliha Yameen, Javeria Ashraf, Saba Shahid, Syed Faisal Mahmood, Asghar Nasir, Nosheen Nasir, Bushra Jamil, Najia Karim Ghanchi, Iffat Khanum, Safina Abdul Razzak, Akber Kanji, Rabia Hussain, Martin E. Rottenberg, Zahra Hasan

Department of Pathology and Laboratory Medicine

Understanding key host protective mechanisms against SARS-CoV-2 infection can help improve treatment modalities for COVID-19. We used a blood transcriptome approach to study biomarkers associated with differing severity of COVID-19, comparing severe and mild Symptomatic disease with Asymptomatic COVID-19 and uninfected Controls. There was suppression of antigen presentation but upregulation of inflammatory and viral mRNA translation associated pathways in Symptomatic as compared with Asymptomatic cases. In severe COVID-19, CD177 a neutrophil marker, was upregulated while interferon stimulated genes (ISGs) were downregulated. Asymptomatic COVID-19 cases displayed upregulation of ISGs and humoral response genes with downregulation of ICAM3 and TLR8. Compared across …


The Role Of Interspecies Recombination In The Evolution Of Antibiotic-Resistant Pneumococci, Joshua C. D'Aeth, Mark Pg Van Der Linden, Lesley Mcgee, Herminia De Lencastre, Paul Turner, Jae-Hoon Song, Stephanie W. Lo, Rebecca A. Gladstone, Gps Consortium, Sadia Shakoor Jul 2021

The Role Of Interspecies Recombination In The Evolution Of Antibiotic-Resistant Pneumococci, Joshua C. D'Aeth, Mark Pg Van Der Linden, Lesley Mcgee, Herminia De Lencastre, Paul Turner, Jae-Hoon Song, Stephanie W. Lo, Rebecca A. Gladstone, Gps Consortium, Sadia Shakoor

Department of Pathology and Laboratory Medicine

Multidrug-resistant Streptococcus pneumoniae emerge through the modification of core genome loci by interspecies homologous recombinations, and acquisition of gene cassettes. Both occurred in the otherwise contrasting histories of the antibiotic-resistant S. pneumoniae lineages PMEN3 and PMEN9. A single PMEN3 clade spread globally, evading vaccine-induced immunity through frequent serotype switching, whereas locally circulating PMEN9 clades independently gained resistance. Both lineages repeatedly integrated Tn916-type and Tn1207.1-type elements, conferring tetracycline and macrolide resistance, respectively, through homologous recombination importing sequences originating in other species. A species-wide dataset found over 100 instances of such interspecific acquisitions of resistance cassettes and flanking …


Silent Epidemic Of Childhood Bronchiectasis In Pakistan: An Infectious Disease Physician's Perspective, Fatima Mir Jan 2021

Silent Epidemic Of Childhood Bronchiectasis In Pakistan: An Infectious Disease Physician's Perspective, Fatima Mir

Department of Paediatrics and Child Health

No abstract provided.