Abstract
Background: Sepsis is a syndrome with CD4+ T-cell dysfunction and dysregulation of T helper (Th) and regulatory T (Treg) cells. Glutamine (Gln) is a nutrient with immunomodulatory properties. This study investigated the effects of dietary Gln pretreatment on Th and Treg cell homeostasis and lung injury in mice with gut-derived polymicrobial sepsis. Methods: Mice were randomly assigned to 4 groups with 2 control (C and G) and 2 sepsis groups (SC and SG). The C and SC groups were fed a common semipurified diet, whereas the G and SG groups received an identical diet except that part of the casein was replaced by Gln. Mice were administered these diets for 2 weeks. Then mice in the control groups underwent a sham operation, whereas operations in the sepsis groups were performed with cecal ligation and puncture. Mice were killed 24 hours after the surgery. Blood, spleens, and lungs were collected for further examination. Results: Sepsis resulted in a decreased blood T-lymphocyte percentage, whereas percentages of interferon-γ-expressing, interleukin (IL)-4-expressing, and IL-17-expressing CD4+ T cells were upregulated. Compared with the SC group, Gln administration before sepsis reduced blood Th1, Th2, and Th17 but increased Treg percentages. Also, percentages of CD69-expressing CD4+ and CD8+ cells in the spleen increased. Concomitant with the decreased plasma IL-6 and keratinocyte-derived chemokine levels, the SG group exhibited a lower injury score of the lungs. Conclusions: Pretreatment with Gln may elicit more balanced Th polarization, alleviate inflammatory response, and attenuate lung injury induced by polymicrobial sepsis.
| Original language | English |
|---|---|
| Journal | Journal of Parenteral and Enteral Nutrition |
| DOIs | |
| Publication status | Published - Jan 1 2019 |
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Keywords
- CD4 T cells
- glutamine
- sepsis
- T helper cell
- T regulatory cell
ASJC Scopus subject areas
- Medicine (miscellaneous)
- Nutrition and Dietetics
Cite this
Antecedent Administration of Glutamine Benefits the Homeostasis of CD4+ T Cells and Attenuates Lung Injury in Mice With Gut-Derived Polymicrobial Sepsis. / Lei, Cing Syuan; Wu, Jin Ming; Lee, Po Chu; Kuo, Ting Chun; Chen, Po Da; Hou, Yu Chen; Yeh, Sung Ling; Lin, Ming Tsan.
In: Journal of Parenteral and Enteral Nutrition, 01.01.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Antecedent Administration of Glutamine Benefits the Homeostasis of CD4+ T Cells and Attenuates Lung Injury in Mice With Gut-Derived Polymicrobial Sepsis
AU - Lei, Cing Syuan
AU - Wu, Jin Ming
AU - Lee, Po Chu
AU - Kuo, Ting Chun
AU - Chen, Po Da
AU - Hou, Yu Chen
AU - Yeh, Sung Ling
AU - Lin, Ming Tsan
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Background: Sepsis is a syndrome with CD4+ T-cell dysfunction and dysregulation of T helper (Th) and regulatory T (Treg) cells. Glutamine (Gln) is a nutrient with immunomodulatory properties. This study investigated the effects of dietary Gln pretreatment on Th and Treg cell homeostasis and lung injury in mice with gut-derived polymicrobial sepsis. Methods: Mice were randomly assigned to 4 groups with 2 control (C and G) and 2 sepsis groups (SC and SG). The C and SC groups were fed a common semipurified diet, whereas the G and SG groups received an identical diet except that part of the casein was replaced by Gln. Mice were administered these diets for 2 weeks. Then mice in the control groups underwent a sham operation, whereas operations in the sepsis groups were performed with cecal ligation and puncture. Mice were killed 24 hours after the surgery. Blood, spleens, and lungs were collected for further examination. Results: Sepsis resulted in a decreased blood T-lymphocyte percentage, whereas percentages of interferon-γ-expressing, interleukin (IL)-4-expressing, and IL-17-expressing CD4+ T cells were upregulated. Compared with the SC group, Gln administration before sepsis reduced blood Th1, Th2, and Th17 but increased Treg percentages. Also, percentages of CD69-expressing CD4+ and CD8+ cells in the spleen increased. Concomitant with the decreased plasma IL-6 and keratinocyte-derived chemokine levels, the SG group exhibited a lower injury score of the lungs. Conclusions: Pretreatment with Gln may elicit more balanced Th polarization, alleviate inflammatory response, and attenuate lung injury induced by polymicrobial sepsis.
AB - Background: Sepsis is a syndrome with CD4+ T-cell dysfunction and dysregulation of T helper (Th) and regulatory T (Treg) cells. Glutamine (Gln) is a nutrient with immunomodulatory properties. This study investigated the effects of dietary Gln pretreatment on Th and Treg cell homeostasis and lung injury in mice with gut-derived polymicrobial sepsis. Methods: Mice were randomly assigned to 4 groups with 2 control (C and G) and 2 sepsis groups (SC and SG). The C and SC groups were fed a common semipurified diet, whereas the G and SG groups received an identical diet except that part of the casein was replaced by Gln. Mice were administered these diets for 2 weeks. Then mice in the control groups underwent a sham operation, whereas operations in the sepsis groups were performed with cecal ligation and puncture. Mice were killed 24 hours after the surgery. Blood, spleens, and lungs were collected for further examination. Results: Sepsis resulted in a decreased blood T-lymphocyte percentage, whereas percentages of interferon-γ-expressing, interleukin (IL)-4-expressing, and IL-17-expressing CD4+ T cells were upregulated. Compared with the SC group, Gln administration before sepsis reduced blood Th1, Th2, and Th17 but increased Treg percentages. Also, percentages of CD69-expressing CD4+ and CD8+ cells in the spleen increased. Concomitant with the decreased plasma IL-6 and keratinocyte-derived chemokine levels, the SG group exhibited a lower injury score of the lungs. Conclusions: Pretreatment with Gln may elicit more balanced Th polarization, alleviate inflammatory response, and attenuate lung injury induced by polymicrobial sepsis.
KW - CD4 T cells
KW - glutamine
KW - sepsis
KW - T helper cell
KW - T regulatory cell
UR - http://www.scopus.com/inward/record.url?scp=85061026311&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85061026311&partnerID=8YFLogxK
U2 - 10.1002/jpen.1505
DO - 10.1002/jpen.1505
M3 - Article
JO - Journal of Parenteral and Enteral Nutrition
JF - Journal of Parenteral and Enteral Nutrition
SN - 0148-6071
ER -