Background And Aims: The aim of the present study was to examine the time course of the change in the concentrations of plasma retinol, alpha-tocopherol, lutein, lycopene, alpha-carotene, beta-carotene (antioxidant vitamins) and malondialdehyde (lipid peroxidation) in patients following elective knee arthroplasty.
Methods: Patients (n=20) who underwent an elective knee arthroplasty, had venous blood samples withdrawn pre-operatively and at 12, 24, 48, 72 and 168 h after the start of surgery for the analysis of circulating concentrations of C-reactive protein, albumin, cholesterol, triglycerides and malondialdehyde and also the lipid soluble antioxidants vitamins.
Results: Over the study period of 0-168 h there was a significant increase in circulating C-reactive protein concentrations (peak 48 h, P<0.001) and a significant fall in albumin, cholesterol and triglyceride concentrations (trough 48 h, P<0.001). Malondialdehyde concentrations fell by approximately 35% (P<0.001) during the study period. However, they did not alter significantly over the study period when adjusted for triglyceride (P=0.309). The plasma concentrations of retinol, alpha-tocopherol, lutein, lycopene, alpha-carotene and beta-carotene all fell (P0.001). When adjusted for cholesterol, the reductions in plasma concentrations of alpha-tocopherol, lutein, lycopene, and beta-carotene in the post-operative period were no longer statistically significant.
Conclusions: The results of the present study indicate that, in apparently healthy subjects undergoing an acute inflammatory insult, circulating lipid soluble vitamin antioxidants are transiently reduced. However, when corrected for lipids the concentrations were similar to those of baseline. In the absence of an increase in lipid peroxidation such falls in plasma concentrations of lipid soluble vitamins are unlikely to be a reliable measure of status.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.clnu.2005.02.008 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The Limited Utility of Hemoglobin A1c as a Predictor for Periprosthetic Joint Infection Following Total Joint Arthroplasty: A Continuous Variable Analysis.
J Arthroplasty
January 2025
Department of Orthopaedic Surgery, Keck School of Medicine of the University of Southern California, Los Angeles, California. Electronic address:
Introduction: Patients who have poorly controlled diabetes mellitus are at increased risk of periprosthetic joint infection (PJI). Nevertheless, an optimal preoperative hemoglobin A1c (HbA1c) threshold has not been established. This study sought to identify preoperative HbA1c thresholds that were predictive of adverse outcomes for total hip (THA) and total knee arthroplasty (TKA) patients.
View Article and Find Full Text PDFTwo Decades Since the Unequal Treatment Report: The State of Racial, Ethnic, and Socioeconomic Disparities in Elective Total Hip and Knee Replacement Use.
J Bone Joint Surg Am
November 2024
Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania.
Published in 2003 by the Institute of Medicine, Unequal Treatment: Confronting Racial and Ethnic Disparities in Health Care placed an unprecedented spotlight on disparities in the U.S. health-care system.
View Article and Find Full Text PDFComplete Blood Cell Count-Based Ratios Identify Total Joint Arthroplasty Patients Likely to Benefit from Perioperative Dexamethasone.
J Bone Joint Surg Am
January 2025
Department of Orthopaedic Surgery, Keck School of Medicine of the University of Southern California, Los Angeles, California.
Background: Complete blood cell count-based ratios (CBRs), including the neutrophil-lymphocyte ratio (NLR) and monocyte-lymphocyte ratio (MLR), are inflammatory markers associated with postoperative morbidity. Given the link between the surgical stress response and complications after total joint arthroplasty (TJA), this study aimed to evaluate whether higher preoperative CBR values predict greater postoperative benefits associated with dexamethasone utilization.
Methods: The Premier Healthcare Database was queried for adult patients who underwent primary, elective total hip or knee arthroplasty (THA or TKA).
Penicillin is a frequently reported medication allergy. The beta-lactam ring shared between cephalosporins and penicillin often leads to the use of alternative antibiotics for surgical prophylaxis due to concern for cross-reactivity, despite a true IgE-mediated hypersensitivity being very rare. This misconception leads to the use of less effective second line antibiotics, such as clindamycin or vancomycin, for penicillin-allergic patients which has been shown to increase odds of postoperative infection in elective knee arthroplasty, shoulder arthroplasty and spine surgery.
View Article and Find Full Text PDFTourniquet and/or Adductor Canal Block Use Confer No Additional Early Quadriceps Weakness Following Total Knee Arthroplasty: An Analysis of 203 Patients.
Iowa Orthop J
January 2025
Department of Orthopedic Surgery, NYU Langone Health, New York, New York, USA.
Background: Quadriceps weakness following total knee arthroplasty (TKA) delays rehabilitation and increases fall risk. The combined impact of tourniquets and adductor canal blocks (ACBs) on postoperative quadriceps strength has not been defined. This study evaluated the early effects of tourniquet and/or ACB usage on quadriceps strength following TKA.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!