Background: Experimental intravenous (IV) parenteral nutrition (PN) diminishes gut-associated lymphoid tissue (GALT) cell number and function. PN solution cannot maintain GALT at the same level as a normal diet, even when delivered intragastrically (IG). Previous studies demonstrated pyrroloquinoline quinone (PQQ)-deficient mice to be less immunologically responsive. Because standard (STD) PN solution lacks PQQ, PQQ supplementation may prevent PN-induced GALT changes. This study was designed to determine the influence of adding PQQ to PN on GALT.

Methods: In experiment 1, mice (n = 32) were randomized to chow, IV-STD-PN, and IV-PQQ-PN groups. The chow group was fed chow with the same caloric content as PN. The IV-STD-PN group received STD-PN solution, whereas the IV-PQQ-PN group was given PQQ (3 mcg/d)-enriched PN by the IV route. After 5 days of feeding, lymphocytes were isolated from the Peyer's patch (PPs), intraepithelial space (IE), and lamina propria (LP) of the small intestine. GALT lymphocyte number and phenotype (αβTCR+, γδTCR+, CD4+, CD8+, B220+ cells) and intestinal immunoglobulin A (IgA) level were determined. In experiment 2, mice (n = 28) were randomized to IG-STD-PN or IG-PQQ-PN group. After IG nutrition supports, GALT mass and function were determined as in experiment 1.

Results: The IV-PQQ-PN group showed increased PP lymphocyte number and PP CD8+ cell number compared with the IV-STD PN group. The IG-PQQ-PN group had significantly greater PP lymphocyte number and PP CD4+ cell numbers than the IG-STD-PN group. Neither IV nor IG PQQ treatment raised IgA level.

Conclusions: PQQ added to PN partly restores GALT mass, although its effects on GALT function remain unclear.

Download full-text PDF

Source
http://dx.doi.org/10.1177/0148607110395512DOI Listing

Publication Analysis

Top Keywords

lymphocyte number
12
influence adding
8
pyrroloquinoline quinone
8
parenteral nutrition
8
gut-associated lymphoid
8
lymphoid tissue
8
cell number
8
experiment mice
8
mice randomized
8
group
8

Similar Publications

Dose effect of corticosteroids on peripheral lymphocyte profiles in patients with systemic lupus erythematosus.

Clin Rheumatol

January 2025

Department of Rheumatology and Immunology, Peking University People's Hospital, 11 Xizhimen South Street, Beijing, 100044, China.

Objective: To investigate the dose effect of methylprednisolone (MP) on peripheral lymphocyte profiles in patients with systemic lupus erythematosus (SLE). This study investigated the impact of varied MP doses on peripheral lymphocyte subtypes in SLE patients.

Methods: We conducted a prospective study involving 51 SLE patients, categorized into four groups (40 mg/day, 80 mg/day, 500 mg/day, and 1000 mg/day) based on the administered MP dosage during hospitalization.

View Article and Find Full Text PDF

The ability of the prognostic nutritional index to predict short-term mortality in geriatric acute heart failure.

Egypt Heart J

January 2025

Department of Emergency Medicine, Ümraniye Education and Research Hospital, University of Health Sciences, Site Mahallesi, Adıvar Sokak, No 44/15, Ümraniye, İstanbul, Turkey.

Background: Heart failure is a critical cardiovascular condition, necessitating comprehensive treatment approaches and contributing to elevated mortality rates. This study aimed to evaluate the effect of the prognostic nutritional index (PNI) on the prognosis of geriatric patients diagnosed with acute heart failure.

Results: A total of 104 patients were included and evaluated retrospectively in this study; 57.

View Article and Find Full Text PDF

Objectives: This study aims to assess the correlation between clinical features and mortality in human immunodeficiency virus (HIV)-infected individuals with COVID-19.

Methods: A systematic literature search was conducted for cohort, cross-sectional, and case series that reported co-infection with HIV and COVID-19 published from January to September 2020. Clinical features such as age, comorbidities, CD4T lymphocyte counts, HIV RNA levels, and antiretroviral regimens were evaluated using meta-analyses and systematic reviews.

View Article and Find Full Text PDF

Microalgae have well-established health benefits for farmed fish. Thus, this study aims to explore the potential protective effects of , is, and against pyrogallol-induced hematological, hepatic, and renal biomarkers in African catfish (), as well as the histopathological changes in the liver and kidney. Fish weighing 200 ± 25 g were divided into several groups: group 1 served as the control, group 2 was exposed to 10 mg/L of pyrogallol, and groups 3, 4, and 5 were exposed to the same concentration of pyrogallol, supplemented with at 20 g/kg diet, is at 50 g/kg diet, and at 5 g/kg diet, respectively, for 15 days.

View Article and Find Full Text PDF

Associations of aldehyde exposure with serum uric acid and hyperuricemia among U.S. adults from NHANES 2013-2014.

Heliyon

December 2024

Key Laboratory of Cardiovascular Epidemiology & Department of Epidemiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China.

Background: Aldehyde is a kind of important environmental pollutant, which has been demonstrated to be associated with increased risks of various chronic diseases with the economic and social development. However, the effects of aldehydes on serum uric acid (SUA) and hyperuricemia remained inexplicit, and the potential mediating pathways for this relationship needed to be addressed.

Methods: This study investigated the associations of individual and mixed aldehydes with SUA and hyperuricemia among 1588 U S.

View Article and Find Full Text PDF

Want 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!