Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, New York.
Published: August 2019
AI Article Synopsis
Article Abstract
Background: Current regulations do not require blood collection facilities to ask donors about cigarette smoking, and the prevalence of nicotine and its metabolites in blood products is not well established. Although smokers have higher hemoglobin (Hb) levels, smoking may adversely affect the quality of donated red blood cells through higher carboxyhemoglobin (COHb) content and premature hemolysis.
Study Design And Methods: Red blood cell (RBC) unit segments from 100 unique donors were tested for nicotine and its metabolite cotinine by mass spectrometry and for COHb spectrophotometrically. Outcomes were evaluated retrospectively in adult non-bleeding patients receiving single RBC units.
Results: Thirteen of 100 RBC segments (13%) were positive for cotinine at levels consistent with current smoking (> 10 ng/mL). The cotinine positive RBCs showed significantly greater COHb content compared to cotinine negative units (median 3.0% vs. 0.8%, p = 0.007). For patients transfused cotinine-positive units, there was no significant change in their vital signs following transfusion and no transfusion reactions were observed. However, patients transfused cotinine-positive units showed significantly reduced hematocrit and hemoglobin increments (median +1.2% and +0.4 g/dL) following transfusion compared to patients receiving cotinine negative units (median +3.6% and +1.4 g/dL) (p = 0.014).
Conclusion: Thirteen percent of RBC units tested positive for cotinine at levels consistent with active smoking, accordant with the estimated national smoking rate of 15.5%. Cotinine-positive RBC units had greater COHb content and showed reduced hematocrit and hemoglobin increments following transfusion. These preliminary results should be validated in a larger cohort.
Background: A healthy diet has been proposed to support good mental health, but the addition of either red meat or meat alternatives is nuanced.
Objectives: We aimed to determine if psychological and physiological well-being is differentially affected by consuming recommended weekly amounts of either lean red meat or plant-based meat alternatives (PBMAs) supplemented with a plant-rich diet.
Methods: The trial was a parallel 2-arm randomized intervention of 10 wk duration.
Autoimmune hemolytic anemia is a disorder that is characterized by the destruction of red blood cells through an autoimmune process, such as temperature-dependent antibodies. The two predominant types, cold agglutinin and warm agglutinin disease, typically possess different underlying etiologies. Prompt recognition and workup of autoimmune hemolytic anemia should be prioritized to potentially uncover any underlying primary cause, such as malignancy.
This study aimed to investigate the effects of short-term exposure of Bisphenol A (BPA) on the growth and lactation performance, blood parameters, and milk composition of lactating rabbits and explore its potential molecular mechanisms. Eight lactating rabbits with similar body weight were selected and randomly divided into the experimental group (BPA) and the control group (Ctrl). The group BPA was orally administered 80 mg/kg/day BPA on the 15th day postpartum, while the group Ctrl received a corresponding volume of vehicle.
Photosensitizers and pigments in raw meat such as porphyrins, riboflavin, and myoglobin after incorporation with light beam prompt the generation of singlet oxygen (O) from triplet oxygen (O) and cause oxidative rancidity of meat products. In this study, the results of photooxidation reactions of sheep erythrocyte (red blood cell) model as a model rich in hemoglobin and phospholipids bilayer, and oleic acid model were obtained by H NMR spectroscopy, TBARS assay, and iodometric titration. In both models, the rate of lipid photooxidation in the presence of hydroalcoholic extracts of Turmeric ( L.
(Family: Fabaceae) is traditionally used in Ayurvedic medicine for various medicinal purposes, including as a treatment for wounds, leprosy, skin diseases, fever, diabetes, etc. Although the root and stem of this plant have a significant medicinal value, there was little research on the leaves of this plant. This study aimed to investigate the qualitative phytochemical profile and evaluate the in vitro cytotoxic, anti-inflammatory, antioxidant, and antiarthritic activities, as well as the in vivo anti-inflammatory and analgesic activities, of leaf extract.
