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  1. Article ; Online: Angiocrine Signaling in Sinusoidal Health and Disease.

    Cooper, Shawna A / Kostallari, Enis / Shah, Vijay H

    Seminars in liver disease

    2023  Volume 43, Issue 3, Page(s) 245–257

    Abstract: Liver sinusoidal endothelial cells (LSECs) are key players in maintaining hepatic homeostasis. They also play crucial roles during liver injury by communicating with liver cell types as well as immune cells and promoting portal hypertension, fibrosis, ... ...

    Abstract Liver sinusoidal endothelial cells (LSECs) are key players in maintaining hepatic homeostasis. They also play crucial roles during liver injury by communicating with liver cell types as well as immune cells and promoting portal hypertension, fibrosis, and inflammation. Cutting-edge technology, such as single cell and spatial transcriptomics, have revealed the existence of distinct LSEC subpopulations with a clear zonation in the liver. The signals released by LSECs are commonly called "angiocrine signaling." In this review, we summarize the role of angiocrine signaling in health and disease, including zonation in healthy liver, regeneration, fibrosis, portal hypertension, nonalcoholic fatty liver disease, alcohol-associated liver disease, aging, drug-induced liver injury, and ischemia/reperfusion, as well as potential therapeutic advances. In conclusion, sinusoidal endotheliopathy is recognized in liver disease and promising preclinical studies are paving the path toward LSEC-specific pharmacotherapies.
    MeSH term(s) Humans ; Endothelial Cells/metabolism ; Liver/pathology ; Non-alcoholic Fatty Liver Disease/metabolism ; Hypertension, Portal/metabolism ; Fibrosis ; Liver Cirrhosis/metabolism
    Language English
    Publishing date 2023-07-13
    Publishing country United States
    Document type Review ; Journal Article
    ZDB-ID 603177-8
    ISSN 1098-8971 ; 0272-8087
    ISSN (online) 1098-8971
    ISSN 0272-8087
    DOI 10.1055/a-2128-5907
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Omics and AI advance biomarker discovery for liver disease.

    Wu, Tiffany / Cooper, Shawna A / Shah, Vijay H

    Nature medicine

    2022  Volume 28, Issue 6, Page(s) 1131–1132

    MeSH term(s) Artificial Intelligence ; Biomarkers ; Genomics ; Humans ; Liver Diseases/genetics ; Proteomics
    Chemical Substances Biomarkers
    Language English
    Publishing date 2022-06-16
    Publishing country United States
    Document type Journal Article ; Comment
    ZDB-ID 1220066-9
    ISSN 1546-170X ; 1078-8956
    ISSN (online) 1546-170X
    ISSN 1078-8956
    DOI 10.1038/s41591-022-01853-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Angiocrine Signaling in Sinusoidal Health and Disease

    Cooper, Shawna A. / Kostallari, Enis / Shah, Vijay H.

    Seminars in Liver Disease

    2023  Volume 43, Issue 03, Page(s) 245–257

    Abstract: Liver sinusoidal endothelial cells (LSECs) are key players in maintaining hepatic homeostasis. They also play crucial roles during liver injury by communicating with liver cell types as well as immune cells and promoting portal hypertension, fibrosis, ... ...

    Abstract Liver sinusoidal endothelial cells (LSECs) are key players in maintaining hepatic homeostasis. They also play crucial roles during liver injury by communicating with liver cell types as well as immune cells and promoting portal hypertension, fibrosis, and inflammation. Cutting-edge technology, such as single cell and spatial transcriptomics, have revealed the existence of distinct LSEC subpopulations with a clear zonation in the liver. The signals released by LSECs are commonly called “angiocrine signaling.” In this review, we summarize the role of angiocrine signaling in health and disease, including zonation in healthy liver, regeneration, fibrosis, portal hypertension, nonalcoholic fatty liver disease, alcohol-associated liver disease, aging, drug-induced liver injury, and ischemia/reperfusion, as well as potential therapeutic advances. In conclusion, sinusoidal endotheliopathy is recognized in liver disease and promising preclinical studies are paving the path toward LSEC-specific pharmacotherapies.
    Keywords angiocrine signaling ; liver sinusoidal endothelial cells ; liver health ; liver disease ; therapeutics
    Language English
    Publishing date 2023-07-13
    Publisher Thieme Medical Publishers, Inc.
    Publishing place Stuttgart ; New York
    Document type Article
    ZDB-ID 603177-8
    ISSN 1098-8971 ; 0272-8087
    ISSN (online) 1098-8971
    ISSN 0272-8087
    DOI 10.1055/a-2128-5907
    Database Thieme publisher's database

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  4. Article ; Online: Use of a health worker-targeted smartphone app to support quality malaria RDT implementation in Busia County, Kenya: A feasibility and acceptability study.

    Skjefte, Malia / Cooper, Shawna / Poyer, Stephen / Lourenço, Christopher / Smedinghoff, Sam / Keller, Brett / Wambua, Tonny / Oduor, Christine / Frade, Sasha / Waweru, Wycliffe

    PloS one

    2024  Volume 19, Issue 3, Page(s) e0295049

    Abstract: Malaria rapid diagnostic tests (mRDTs) are an essential diagnostic tool in low-resource settings; however, administration and interpretation errors reduce their effectiveness. HealthPulse, a smartphone mRDT reader application, was developed by Audere to ... ...

    Abstract Malaria rapid diagnostic tests (mRDTs) are an essential diagnostic tool in low-resource settings; however, administration and interpretation errors reduce their effectiveness. HealthPulse, a smartphone mRDT reader application, was developed by Audere to aid health workers in mRDT administration and interpretation, with an aim to improve the mRDT testing process and facilitate timely decision making through access to digitized results. Audere partnered with PSI and PS Kenya to conduct a pilot study in Busia County, Kenya between March and September 2021 to assess the feasibility and acceptability of HealthPulse to support malaria parasitological diagnosis by community health volunteers (CHVs) and private clinic health workers (private clinic HWs). Metadata was interpreted to assess adherence to correct use protocols and health worker perceptions of the app. Changes to mRDT implementation knowledge were measured through baseline and endline surveys. The baseline survey identified clear mRDT implementation gaps, such as few health workers correctly knowing the number of diluent drops and minimum and maximum wait times for mRDT interpretation, although health worker knowledge improved after using the app. Endline survey results showed that 99.6% of health workers found the app useful and 90.1% found the app easy to use. Process control data showed that most mRDTs (89.2%) were photographed within the recommended 30-minute time frame and that 91.4% of uploaded photos passed the app filter quality check on the first submission. During 154 encounters (3.5% of all encounters) a health worker dispensed an artemisinin-based combination therapy (ACT) to their patient even with a negative mRDT readout. Overall, study results indicated that HealthPulse holds potential as a mobile tool for use in low-resource settings, with future supportive supervision, diagnostic, and surveillance benefits. Follow-up studies will aim to more deeply understand the utility and acceptance of the HealthPulse app.
    MeSH term(s) Humans ; Mobile Applications ; Kenya ; Feasibility Studies ; Pilot Projects ; Malaria/diagnosis ; Diagnostic Tests, Routine/methods ; Antimalarials/therapeutic use
    Chemical Substances Antimalarials
    Language English
    Publishing date 2024-03-26
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0295049
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Three-Dimensional Structure of Inner Ear Hair Cell Ribbon Synapses in a Zebrafish Model of Usher Syndrome Type 1B.

    Riley, Kenneth C / Koleilat, Alaa / Dugdale, Joseph A / Cooper, Shawna A / Christensen, Trace A / Schimmenti, Lisa A

    Zebrafish

    2023  Volume 20, Issue 2, Page(s) 47–54

    Abstract: Our understanding of inner ear hair cell ultrastructure has heretofore relied upon two-dimensional imaging; however, serial block-face scanning electron microscopy (SBFSEM) changes this paradigm allowing for three-dimensional evaluation. We compared ... ...

    Abstract Our understanding of inner ear hair cell ultrastructure has heretofore relied upon two-dimensional imaging; however, serial block-face scanning electron microscopy (SBFSEM) changes this paradigm allowing for three-dimensional evaluation. We compared inner ear hair cells of the apical cristae in
    MeSH term(s) Animals ; Humans ; Zebrafish ; Usher Syndromes/genetics ; Usher Syndromes/metabolism ; Synapses/metabolism ; Synapses/ultrastructure ; Hair Cells, Auditory, Inner/metabolism ; Hair Cells, Auditory, Inner/ultrastructure ; Hair ; Myosins/genetics ; Myosins/metabolism ; Zebrafish Proteins/genetics ; Zebrafish Proteins/metabolism
    Chemical Substances Myo7aa protein, zebrafish ; Myosins (EC 3.6.4.1) ; Zebrafish Proteins
    Language English
    Publishing date 2023-04-18
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2156020-1
    ISSN 1557-8542 ; 1545-8547
    ISSN (online) 1557-8542
    ISSN 1545-8547
    DOI 10.1089/zeb.2022.0049
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Pathologic light chain amyloidosis oligomer detection in urinary extracellular vesicles as a diagnostic tool for response and progression of disease.

    Cooper, Shawna A / Dick, Christopher J / Misra, Pinaki / Leung, Nelson / Schinstock, Carrie A / Ramirez-Alvarado, Marina

    Frontiers in oncology

    2022  Volume 12, Page(s) 978198

    Abstract: Light Chain (AL) Amyloidosis is a plasma cell dyscrasia producing amyloidogenic light chains (LC) that misfold and form amyloid deposits that cause damage in vital organs, primarily the heart and kidneys. Urinary extracellular vesicles (uEVs) are ... ...

    Abstract Light Chain (AL) Amyloidosis is a plasma cell dyscrasia producing amyloidogenic light chains (LC) that misfold and form amyloid deposits that cause damage in vital organs, primarily the heart and kidneys. Urinary extracellular vesicles (uEVs) are nanoparticles produced by renal epithelial cells throughout the nephron. We previously showed that uEVs from active renal AL amyloidosis patients contain LC oligomers that are large (>250kDa), resistant to heat and chemical denaturation, but of low abundance. Renal dysfunction in AL amyloidosis results in high urine protein, compounding technical challenges to use uEVs as analytical tools. In this study, we assess the use of uEVs as analytical diagnostic tools for response and disease progression in AL amyloidosis. Our results suggest that uEV protein concentration, urine volume, and particle concentrations are not directly correlated. Multiple strategies for overcoming non-specific antibody binding in uEV samples were validated in our study. We demonstrated that the sensitivity for pre-clinical testing is improved with a urine sample requirement algorithm that we developed. The findings of our study will provide a pathway toward development of critically needed tools for patient management. Sensitive detection of LC oligomers from a non-invasive urine sample rather than an invasive renal biopsy will reduce patient burden and healthcare costs. The ability to detect LC oligomers in patients with renal progression, despite positive hematologic response; will allow clinicians to confidently treat, but not overtreat, patients at risk of ongoing significant renal injury.
    Language English
    Publishing date 2022-10-04
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2649216-7
    ISSN 2234-943X
    ISSN 2234-943X
    DOI 10.3389/fonc.2022.978198
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Flu@home: the Comparative Accuracy of an At-Home Influenza Rapid Diagnostic Test Using a Prepositioned Test Kit, Mobile App, Mail-in Reference Sample, and Symptom-Based Testing Trigger.

    Kotnik, Jack Henry / Cooper, Shawna / Smedinghoff, Sam / Gade, Piyusha / Scherer, Kelly / Maier, Mitchell / Juusola, Jessie / Ramirez, Ernesto / Naraghi-Arani, Pejman / Lyon, Victoria / Lutz, Barry / Thompson, Matthew

    Journal of clinical microbiology

    2022  Volume 60, Issue 3, Page(s) e0207021

    Abstract: At-home testing with rapid diagnostic tests (RDTs) for respiratory viruses could facilitate early diagnosis, guide patient care, and prevent transmission. Such RDTs are best used near the onset of illness when viral load is highest and clinical action ... ...

    Abstract At-home testing with rapid diagnostic tests (RDTs) for respiratory viruses could facilitate early diagnosis, guide patient care, and prevent transmission. Such RDTs are best used near the onset of illness when viral load is highest and clinical action will be most impactful, which may be achieved by at-home testing. We evaluated the diagnostic accuracy of the QuickVue Influenza A+B RDT in an at-home setting. A convenience sample of 5,229 individuals who were engaged with an on-line health research platform were prospectively recruited throughout the United States. "Flu@home" test kits containing a QuickVue RDT and reference sample collection and shipping materials were prepositioned with participants at the beginning of the study. Participants responded to daily symptom surveys. If they reported experiencing cough along with aches, fever, chills, and/or sweats, they used their flu@home kit following instructions on a mobile app and indicated what lines they saw on the RDT. Of the 976 participants who met criteria to use their self-collection kit and completed study procedures, 202 (20.7%) were positive for influenza by qPCR. The RDT had a sensitivity of 28% (95% CI = 21 to 36) and specificity of 99% (98 to 99) for influenza A, and 32% (95% CI = 20 to 46) and 99% (95% CI = 98 to 99), for influenza B. Our results support the concept of app-supported, prepositioned at-home RDT kits using symptom-based triggers, although it cannot be recommended with the RDT used in this study. Further research is needed to determine ways to improve the accuracy and utility of home-based testing for influenza.
    MeSH term(s) Diagnostic Tests, Routine ; Fever ; Humans ; Influenza, Human/diagnosis ; Mobile Applications ; Postal Service ; Sensitivity and Specificity
    Language English
    Publishing date 2022-02-02
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, P.H.S. ; Review
    ZDB-ID 390499-4
    ISSN 1098-660X ; 0095-1137
    ISSN (online) 1098-660X
    ISSN 0095-1137
    DOI 10.1128/JCM.02070-21
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Evaluating an app-guided self-test for influenza: lessons learned for improving the feasibility of study designs to evaluate self-tests for respiratory viruses.

    Zigman Suchsland, Monica L / Rahmatullah, Ivan / Lutz, Barry / Lyon, Victoria / Huang, Shichu / Kline, Enos / Graham, Chelsey / Cooper, Shawna / Su, Philip / Smedinghoff, Sam / Chu, Helen Y / Sewalk, Kara / Brownstein, John S / Thompson, Matthew J

    BMC infectious diseases

    2021  Volume 21, Issue 1, Page(s) 617

    Abstract: Background: Seasonal influenza leads to significant morbidity and mortality. Rapid self-tests could improve access to influenza testing in community settings. We aimed to evaluate the diagnostic accuracy of a mobile app-guided influenza rapid self-test ... ...

    Abstract Background: Seasonal influenza leads to significant morbidity and mortality. Rapid self-tests could improve access to influenza testing in community settings. We aimed to evaluate the diagnostic accuracy of a mobile app-guided influenza rapid self-test for adults with influenza like illness (ILI), and identify optimal methods for conducting accuracy studies for home-based assays for influenza and other respiratory viruses.
    Methods: This cross-sectional study recruited adults who self-reported ILI online. Participants downloaded a mobile app, which guided them through two low nasal swab self-samples. Participants tested the index swab using a lateral flow assay. Test accuracy results were compared to the reference swab tested in a research laboratory for influenza A/B using a molecular assay.
    Results: Analysis included 739 participants, 80% were 25-64 years of age, 79% female, and 73% white. Influenza positivity was 5.9% based on the laboratory reference test. Of those who started their test, 92% reported a self-test result. The sensitivity and specificity of participants' interpretation of the test result compared to the laboratory reference standard were 14% (95%CI 5-28%) and 90% (95%CI 87-92%), respectively.
    Conclusions: A mobile app facilitated study procedures to determine the accuracy of a home based test for influenza, however, test sensitivity was low. Recruiting individuals outside clinical settings who self-report ILI symptoms may lead to lower rates of influenza and/or less severe disease. Earlier identification of study subjects within 48 h of symptom onset through inclusion criteria and rapid shipping of tests or pre-positioning tests is needed to allow self-testing earlier in the course of illness, when viral load is higher.
    MeSH term(s) Adult ; Cross-Sectional Studies ; Data Accuracy ; Enzyme-Linked Immunosorbent Assay/methods ; Feasibility Studies ; Female ; Humans ; Influenza A virus/immunology ; Influenza B virus/immunology ; Influenza, Human/diagnosis ; Influenza, Human/virology ; Male ; Middle Aged ; Mobile Applications ; Self-Testing ; Sensitivity and Specificity
    Language English
    Publishing date 2021-06-29
    Publishing country England
    Document type Evaluation Study ; Journal Article
    ISSN 1471-2334
    ISSN (online) 1471-2334
    DOI 10.1186/s12879-021-06314-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Stiffness is associated with hepatic stellate cell heterogeneity during liver fibrosis.

    Kostallari, Enis / Wei, Bo / Sicard, Delphine / Li, Jiahui / Cooper, Shawna A / Gao, Jinhang / Dehankar, Mrunal / Li, Ying / Cao, Sheng / Yin, Meng / Tschumperlin, Daniel J / Shah, Vijay H

    American journal of physiology. Gastrointestinal and liver physiology

    2021  Volume 322, Issue 2, Page(s) G234–G246

    Abstract: The fibrogenic wound-healing response in liver increases stiffness. Stiffness mechanotransduction, in turn, amplifies fibrogenesis. Here, we aimed to understand the distribution of stiffness in fibrotic liver, how it impacts hepatic stellate cell (HSC) ... ...

    Abstract The fibrogenic wound-healing response in liver increases stiffness. Stiffness mechanotransduction, in turn, amplifies fibrogenesis. Here, we aimed to understand the distribution of stiffness in fibrotic liver, how it impacts hepatic stellate cell (HSC) heterogeneity, and identify mechanisms by which stiffness amplifies fibrogenic responses. Magnetic resonance elastography and atomic force microscopy demonstrated a heterogeneous distribution of liver stiffness at macroscopic and microscopic levels, respectively, in a carbon tetrachloride (CCl
    MeSH term(s) Animals ; Carbon Tetrachloride/metabolism ; Cells, Cultured ; Disease Models, Animal ; Hepatic Stellate Cells/metabolism ; Humans ; Kupffer Cells/metabolism ; Liver/metabolism ; Liver Cirrhosis/metabolism ; Mechanotransduction, Cellular/physiology ; Mice
    Chemical Substances Carbon Tetrachloride (CL2T97X0V0)
    Language English
    Publishing date 2021-12-23
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 603840-2
    ISSN 1522-1547 ; 0193-1857
    ISSN (online) 1522-1547
    ISSN 0193-1857
    DOI 10.1152/ajpgi.00254.2021
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Polyester nasal swabs collected in a dry tube are a robust and inexpensive, minimal self-collection kit for SARS-CoV-2 testing.

    Padgett, Leah R / Kennington, Lauren A / Ahls, Charlotte L / Samarasinghe, Delini K / Tu, Yuan-Po / Wallander, Michelle L / Cooper, Shawna D / Elliott, James S / Rains, Douglas

    PloS one

    2021  Volume 16, Issue 4, Page(s) e0245423

    Abstract: Background: In order to identify an inexpensive yet highly stable SARS-CoV-2 collection device as an alternative to foam swabs stored in transport media, both contrived ("surrogate") CoV-positive and patient-collected spun polyester swabs stored in dry ... ...

    Abstract Background: In order to identify an inexpensive yet highly stable SARS-CoV-2 collection device as an alternative to foam swabs stored in transport media, both contrived ("surrogate") CoV-positive and patient-collected spun polyester swabs stored in dry tubes were evaluated for time- and temperature-stability using qPCR.
    Methods: Surrogate specimens were prepared by combining multiple, residual SARS-CoV-2-positive clinical specimens and diluting to near-LOD levels in either porcine or human mucus ("matrix"), inoculating foam or polyester nasal swabs, and sealing in dry tubes. Swabs were then subjected to one of three temperature excursions: (1) 4°C for up to 72 hours; (2) 40°C for 12 hours, followed by 32°C for up to 60 hours; or (3) multiple freeze-thaw cycles (-20°C). The stability of extracted SARS-CoV-2 RNA for each condition was evaluated by qPCR. Separate usability studies for the dry polyester swab-based HealthPulse@home COVID-19 Specimen Collection Kit were later conducted in both adult and pediatric populations.
    Results: Polyester swabs stored dry demonstrated equivalent performance to foam swabs for detection of low and moderate SARS-CoV-2 viral loads. Mimicking warm- and cold- climate shipment, surrogate specimens were stable following either 72 hours of a high-temperature excursion or two freeze-thaw cycles. In addition, usability studies comprised of self-collected patient specimens yielded sufficient material for molecular testing, as demonstrated by RNase P detection.
    Conclusions: Polyester nasal swabs stored in dry collection tubes offer a robust and inexpensive self-collection method for SARS-CoV-2 viral load testing, as viral RNA remains stable under conditions required for home collection and shipment to the laboratory.
    MeSH term(s) Animals ; COVID-19/diagnosis ; COVID-19/virology ; COVID-19 Testing/methods ; Clinical Laboratory Techniques/methods ; Diagnostic Tests, Routine/methods ; Humans ; Molecular Diagnostic Techniques ; Nasopharynx/virology ; Polyesters ; RNA, Viral/genetics ; Real-Time Polymerase Chain Reaction/methods ; SARS-CoV-2/genetics ; SARS-CoV-2/isolation & purification ; Specimen Handling/methods ; Swine
    Chemical Substances Polyesters ; RNA, Viral
    Language English
    Publishing date 2021-04-14
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0245423
    Database MEDical Literature Analysis and Retrieval System OnLINE

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