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Pakos IS, Lo KB, Salacup G, Pelayo J, Bhargav R, Peterson E, Gul F, DeJoy R, Albano J, Patarroyo-Aponte G, Rangaswami J, Azmaiparashvili Z. Characteristics of peripheral blood differential counts in hospitalized patients with COVID-19. Eur J Haematol 2020; 105:773-778. [PMID: 32794205 PMCID: PMC7436857 DOI: 10.1111/ejh.13509] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/07/2020] [Accepted: 08/10/2020] [Indexed: 12/15/2022]
Abstract
Background A lot remains unknown about the features and laboratory findings that may predict worse outcomes in patients with coronavirus disease 2019 (COVID‐19). The aim of this study was to evaluate the difference in complete blood count parameters and differential counts in patients hospitalized with COVID‐19 who survived compared to those who died. Design We performed a single‐center retrospective study including 242 patients with confirmed COVID‐19. We described the characteristics of the complete blood count parameters in these patients. Mann‐Whitney U test was used to compare hematologic parameters of patients who died and those who survived; multivariate logistic regression was used to look for associations with mortality. Results Patients with COVID‐19 who died had significantly lower median absolute monocyte count (AMC) (0.4 vs 0.5, P = .039) and median platelet count (169 vs 213, P = .009) compared to those who survived. Patients who died had a significantly higher neutrophil‐to‐lymphocyte ratio (6.4 vs 4.5, P = .001). The NLR was positively associated with death (OR = 1.038; 95% CI, 1.003‐1.074, P = .031), while AMC was inversely associated with death (OR = 0.200; 95% CI, 0.052‐0.761, P = .018). Conclusion Among patients with COVID‐19, a lower AMC and higher NLR are associated with higher mortality.
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Affiliation(s)
- Irene S Pakos
- Department of Medicine, Einstein Medical Center Philadelphia, Philadelphia, Pennsylvania, USA
| | - Kevin Bryan Lo
- Department of Medicine, Einstein Medical Center Philadelphia, Philadelphia, Pennsylvania, USA
| | - Grace Salacup
- Department of Medicine, Einstein Medical Center Philadelphia, Philadelphia, Pennsylvania, USA
| | - Jerald Pelayo
- Department of Medicine, Einstein Medical Center Philadelphia, Philadelphia, Pennsylvania, USA
| | - Ruchika Bhargav
- Department of Medicine, Einstein Medical Center Philadelphia, Philadelphia, Pennsylvania, USA
| | - Eric Peterson
- Department of Medicine, Einstein Medical Center Philadelphia, Philadelphia, Pennsylvania, USA
| | - Fahad Gul
- Department of Medicine, Einstein Medical Center Philadelphia, Philadelphia, Pennsylvania, USA
| | - Robert DeJoy
- Department of Medicine, Einstein Medical Center Philadelphia, Philadelphia, Pennsylvania, USA
| | - Jeri Albano
- Department of Medicine, Einstein Medical Center Philadelphia, Philadelphia, Pennsylvania, USA
| | - Gabriel Patarroyo-Aponte
- Pulmonary, Critical Care and Sleep Medicine, Einstein Medical Center Philadelphia, Philadelphia, Pennsylvania, USA.,Sidney Kimmel College of Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Janani Rangaswami
- Department of Medicine, Einstein Medical Center Philadelphia, Philadelphia, Pennsylvania, USA.,Sidney Kimmel College of Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Zurab Azmaiparashvili
- Department of Medicine, Einstein Medical Center Philadelphia, Philadelphia, Pennsylvania, USA
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Rubio-Marrero EN, Vincelli G, Jeffries CM, Shaikh TR, Pakos IS, Ranaivoson FM, von Daake S, Demeler B, De Jaco A, Perkins G, Ellisman MH, Trewhella J, Comoletti D. Structural Characterization of the Extracellular Domain of CASPR2 and Insights into Its Association with the Novel Ligand Contactin1. J Biol Chem 2016; 291:5788-5802. [PMID: 26721881 PMCID: PMC4786715 DOI: 10.1074/jbc.m115.705681] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 12/28/2015] [Indexed: 01/06/2023] Open
Abstract
Contactin-associated protein-like 2 (CNTNAP2) encodes for CASPR2, a multidomain single transmembrane protein belonging to the neurexin superfamily that has been implicated in a broad range of human phenotypes including autism and language impairment. Using a combination of biophysical techniques, including small angle x-ray scattering, single particle electron microscopy, analytical ultracentrifugation, and bio-layer interferometry, we present novel structural and functional data that relate the architecture of the extracellular domain of CASPR2 to a previously unknown ligand, Contactin1 (CNTN1). Structurally, CASPR2 is highly glycosylated and has an overall compact architecture. Functionally, we show that CASPR2 associates with micromolar affinity with CNTN1 but, under the same conditions, it does not interact with any of the other members of the contactin family. Moreover, by using dissociated hippocampal neurons we show that microbeads loaded with CASPR2, but not with a deletion mutant, co-localize with transfected CNTN1, suggesting that CNTN1 is an endogenous ligand for CASPR2. These data provide novel insights into the structure and function of CASPR2, suggesting a complex role of CASPR2 in the nervous system.
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Affiliation(s)
- Eva N Rubio-Marrero
- From the Child Health Institute of New Jersey and Departments of Neuroscience and Cell Biology and
| | - Gabriele Vincelli
- From the Child Health Institute of New Jersey and Departments of Neuroscience and Cell Biology and
| | - Cy M Jeffries
- the School of Molecular Bioscience, University of Sydney, New South Wales 2006, Australia
| | - Tanvir R Shaikh
- the Structural Biology Programme, Central European Institute of Technology, Masaryk University, 62500 Brno, Czech Republic
| | - Irene S Pakos
- From the Child Health Institute of New Jersey and Departments of Neuroscience and Cell Biology and
| | - Fanomezana M Ranaivoson
- From the Child Health Institute of New Jersey and Departments of Neuroscience and Cell Biology and
| | - Sventja von Daake
- From the Child Health Institute of New Jersey and Departments of Neuroscience and Cell Biology and
| | - Borries Demeler
- the Department of Biochemistry, The University of Texas Health Science Center, San Antonio, Texas 78229
| | - Antonella De Jaco
- the Department of Biology and Biotechnologies "Charles Darwin" and Pasteur Institute-Cenci Bolognetti Foundation, Sapienza University of Rome, Rome, Italy 00185
| | - Guy Perkins
- the National Center for Microscopy and Imaging Research, University of California San Diego, La Jolla, California 92093, and
| | - Mark H Ellisman
- the National Center for Microscopy and Imaging Research, University of California San Diego, La Jolla, California 92093, and
| | - Jill Trewhella
- the School of Molecular Bioscience, University of Sydney, New South Wales 2006, Australia,; the Department of Chemistry, University of Utah, Salt Lake City, Utah 84112
| | - Davide Comoletti
- From the Child Health Institute of New Jersey and Departments of Neuroscience and Cell Biology and; Pediatrics, Robert Wood Johnson Medical School, Rutgers University, New Brunswick, New Jersey 08901,.
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