Joyce B. Li

ORCID: 0000-0002-9170-8017
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About
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Research Areas
  • Trauma, Hemostasis, Coagulopathy, Resuscitation
  • Cardiac Arrest and Resuscitation
  • Hemoglobin structure and function
  • COVID-19 Clinical Research Studies
  • Sepsis Diagnosis and Treatment
  • Trauma and Emergency Care Studies
  • SARS-CoV-2 and COVID-19 Research
  • Blood transfusion and management
  • Adipokines, Inflammation, and Metabolic Diseases
  • Immune Response and Inflammation
  • Biochemical Analysis and Sensing Techniques
  • Blood donation and transfusion practices
  • Traumatic Brain Injury and Neurovascular Disturbances
  • COVID-19 epidemiological studies
  • Influenza Virus Research Studies
  • Mosquito-borne diseases and control
  • Heart Rate Variability and Autonomic Control
  • Regulation of Appetite and Obesity
  • Mechanical Circulatory Support Devices

University of California, San Diego
2017-2023

La Jolla Bioengineering Institute
2018-2022

VA San Diego Healthcare System
2017-2021

Politecnico di Milano
2017

Conference Board
2017

Matrix metalloproteinase–2 inhibition rescued leptin receptor expression in the hypothalamus and reduced fat accumulation rodent models of obesity.

10.1126/scitranslmed.aah6324 article EN Science Translational Medicine 2018-08-22

Abstract Traumatic brain injury (TBI) is often accompanied by hemorrhage, and treatment of hemorrhagic shock (HS) after TBI particularly challenging because the two therapeutic strategies for HS conflict. Ischemia/reperfusion from resuscitation can be exaggerated TBI-induced loss autoregulation. In resuscitation, goal to restore lost blood volume, while in priority focused on maintenance adequate cerebral perfusion pressure avoidance secondary bleeding. this study, we investigate responses...

10.1038/s41598-021-81717-3 article EN cc-by Scientific Reports 2021-01-28

Introduction: Infection by SARS-CoV-2 and subsequent COVID-19 can cause viral sepsis. We investigated plasma protease activity patterns in COVID-19-induced sepsis with bacterial superinfection, as well proteomics peptidomics order to assess the possible implications of enhanced proteolysis on major protein systems (e.g., coagulation). Methods: Patients (=4) admitted intensive care units (ICUs) at University California, San Diego (UCSD) Medical Center confirmed positive test for real-time...

10.3389/fmolb.2022.1051471 article EN cc-by Frontiers in Molecular Biosciences 2023-01-11

BACKGROUND Irreversible hemorrhagic shock is characterized by hyporesponsiveness to vasopressor and fluid therapy. Little known, however, about the mechanisms that contribute this phenomenon. Previous studies have shown decreased intestinal perfusion in leads proteolytically mediated increases gut permeability, with subsequent egress of vasoactive substances systemically. Maintenance blood pressure achieved part α1 receptor modulation, which may be affected factors; we thus hypothesized...

10.1097/ta.0000000000001513 article EN Journal of Trauma and Acute Care Surgery 2017-04-19

Refractory vascular failure due to the inability of smooth muscle respond vasoconstrictors such as phenylephrine is a final common pathway for severe circulatory shock any cause, including trauma/hemorrhagic shock. Increased inflammation, Toll-like receptor 4 activation, and decreased response alpha-1 adrenergic receptors which control tone have been reported in shock.In shock, activation contributes via bioavailability receptors.Trauma/hemorrhagic was induced Wistar rats (laparotomy...

10.1097/cce.0000000000000469 article EN cc-by-nc-nd Critical Care Explorations 2021-07-01

Trauma-hemorrhagic shock (T-HS) is a major cause of multiorgan failure and mortality world-wide. Our previous work demonstrates that uncontrolled proteolysis in T-HS associated with poor outcomes enteral inhibition proteolytic activity may be beneficial. However, the enzymes involved, their degradation products, systemic consequences protease are not well understood. aim was to identify plasma enzymatic resulting peptidome experimental T-HS, determine changes this following inhibition....

10.1152/physiol.2023.38.s1.5731285 article EN Physiology 2023-05-01

Preserving vascular function is crucial for preventing multiorgan failure and death in ischemic low-pressure states such as trauma/hemorrhagic shock (T/HS). It has recently been reported that inhibiting circulating proteases released from the bowel to circulation during T/HS may preserve improve outcomes following T/HS. This study aimed evaluate role of serine protease inhibitor gabexate mesilate (GM) preserving when given enterally. We studied reactivity mesenteric arteries male Wistar rats...

10.1038/s41598-023-36021-7 article EN cc-by Scientific Reports 2023-06-22

Objective Fluid resuscitation with blood products is standard of care in the current management trauma/hemorrhagic shock (T/HS). However, availability whole rare civilian prehospital care, and thus component therapy other fluid replacement options are required. This study sought to differentiate compare effects lactated Ringer’s solution (LR), plasma, washed red cells (RBC), (Control) as fluids for hemodynamic restoration after T/HS. Methods Wister male rats (400g) were randomly divided into...

10.1096/fasebj.2020.34.s1.02991 article EN The FASEB Journal 2020-04-01

Abstract Infection by SARS-CoV-2 and subsequent COVID-19 can cause viral sepsis septic shock. Several complications have been observed in patients admitted to the intensive care unit (ICU) with COVID-19, one of those being bacterial superinfection. Based on prior evidence that dysregulated systemwide proteolysis is associated death shock, we investigated whether protease activity could be elevated COVID-19-induced In particular, sought assess possible implications regulation protein systems,...

10.1101/2021.10.20.21265115 preprint EN medRxiv (Cold Spring Harbor Laboratory) 2021-10-22
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