The aim of this paper was to study the effect of combination of Lactobacillus strains and tryptophan(Trp)-rich diet on the intestinal barrier function of Balb/c mice exposed to a cocktail of antibiotics and dextran so...The aim of this paper was to study the effect of combination of Lactobacillus strains and tryptophan(Trp)-rich diet on the intestinal barrier function of Balb/c mice exposed to a cocktail of antibiotics and dextran sodium sulfate.Several Lactobacillus strains isolated from the healthy human fecal sample was found to utilize Trp to produce indole derivatives.The results of Trp metabolism indicated that the ability of Lactobacillus to metabolize Trp to produce indole-3-lactic acid(ILA),indole-3-carboxaldehyde(I3C),and indole-3-acetic acid varies in vitro and in vivo.The effect of Lactobacillus with high-yielding indole derivatives on disease activity index,colon length,and intestinal permeability was significantly better than that of Lactobacillus with low-yielding indole derivatives in a high Trp diet.And Lactobacillus combined with Trp intervention also had a certain regulatory effect on the intestinal flora of male BALB/c mice.Among them,Lactiplantibacillus plantarum DPUL-S164 produced more ILA both in vivo and in vitro,and the combination of L.plantarum DPUL-S164 and Trp significantly decreased the expression level of the serum pro-inflammatory cytokine interleukin(IL)-6 and increased the expression level of the anti-inflammatory cytokine IL-10,significantly improved the number of goblet cells in the mouse mucous layer and increased mucin and tight junction protein expression.Furthermore,L.plantarum DPUL-S164 combined with Trp intervention activated the aryl hydrocarbon receptors(Ah R)signaling pathway.Furthermore,we found that the expression of colonic tight junction protein was positively correlated with the expression of colonic Ah R,and the expression of Ah R was positively correlated with the concentrations of ILA and I3C in vivo.Therefore,we conclude that the ILA as Ah R ligand produced by L.plantarum DPUL-S164 regulated the Ah R pathway,thus up-regulating the expression of the tight junction protein and protecting the integrity of the epithelial barrier.展开更多
Bitterness,one of the 5“basic tastes”,is usually undesired by humans.However,abundant literature reported that bitter fruits and vegetables have beneficial health effects due to their bitter contributors.This review...Bitterness,one of the 5“basic tastes”,is usually undesired by humans.However,abundant literature reported that bitter fruits and vegetables have beneficial health effects due to their bitter contributors.This review provided an updated overview of the main bitter contributors of typical bitter fruits and vegetables and their health benefits.The main bitter contributors,including phenolics,terpenoids,alkaloids,amino acids,nucleosides and purines,were summarized.The bioactivities and wide range of beneficial effects of them on anti-cancers,anti-inflammations,anti-microbes,neuroprotection,inhibiting chronic and acute injury in organs,as well as regulating behavior performance and metabolism were reported.Furthermore,not only did the bitter taste receptors(taste receptor type 2 family,T2Rs)show taste effects,but extra-oral T2Rs could also be activated by binding with bitter components,regulating physiological activities via modulating hormone secretion,immunity,metabolism,and cell proliferation.This review provided a new perspective on exploring and explaining the nutrition of bitter foods,revealing the relationship between the functions of bitter contributors from food and T2Rs.Future trends may focus on revealing the possibility of T2Rs being targets for the treatment of diseases,exploring the mechanism of T2Rs mediating the bioactivities,and making bitter foods more acceptable without getting rid of bitter contributors.展开更多
目的探讨白血病抑制因子受体(leukemia inhibitory factor receptor,LIFR)在非ST段抬高型心肌梗死(non-ST-segment elevation myocardial infarction,NSTEMI)患者中的表达情况及其与心肌重构的可能关联。方法前瞻性选取2023年1月至2024...目的探讨白血病抑制因子受体(leukemia inhibitory factor receptor,LIFR)在非ST段抬高型心肌梗死(non-ST-segment elevation myocardial infarction,NSTEMI)患者中的表达情况及其与心肌重构的可能关联。方法前瞻性选取2023年1月至2024年11月于武汉大学人民医院行冠状动脉造影的急性心肌梗死患者188例,根据是否诊断为NSTEMI分为对照组94例和NSTEMI组94例。收集患者一般临床资料,采用线性回归分析LIFR及与其他指标的相关性。结果与对照组比较,NSTEMI组吸烟史、LIFR、N末端B型钠尿肽前体、肌钙蛋白I、肌酐、尿酸、白细胞计数显著升高,左心室射血分数显著降低,差异有统计学意义[48.94%vs 13.83%,P<0.01;5.82(4.23,8.11)mmol/L vs 0.97(0.60,1.41)mmol/L,P<0.01;2.53(1.24,9.71)pg/L vs 0.03(0.02,0.04),P<0.01;18.57(4.11,250.00)ng/L vs 0.00(0.00,0.00)ng/L,P<0.01;82.50(68.00,121.25)μmol/L vs 68.50(53.00,88.25)μmol/L,P<0.01;411.00(349.00,521.25)μmol/L vs 337.00(286.75,406.00)μmol/L,P<0.01;10.21(8.71,13.09)×10~9/L vs 6.22(4.67,7.46)×10~9/L,P<0.01;47.00(38.00,54.00)%vs 59.00(56.00,60.00)%,P<0.01]。心肌梗死患者血清LIFR与N末端B型钠尿肽前体、肌钙蛋白I及白细胞计数呈正相关(β=1.403,95%CI:10597.867~17327.087,P=0.000;β=0.232,95%CI:114.558~1769.808,P=0.026;β=0.336,95%CI:0.164~0.617,P=0.001)。结论LIFR可能通过炎症参与心肌梗死后心肌重构和心力衰竭的发展。展开更多
基金project was supported by the National Key Research and Development Program(2021YFD2100700)。
文摘The aim of this paper was to study the effect of combination of Lactobacillus strains and tryptophan(Trp)-rich diet on the intestinal barrier function of Balb/c mice exposed to a cocktail of antibiotics and dextran sodium sulfate.Several Lactobacillus strains isolated from the healthy human fecal sample was found to utilize Trp to produce indole derivatives.The results of Trp metabolism indicated that the ability of Lactobacillus to metabolize Trp to produce indole-3-lactic acid(ILA),indole-3-carboxaldehyde(I3C),and indole-3-acetic acid varies in vitro and in vivo.The effect of Lactobacillus with high-yielding indole derivatives on disease activity index,colon length,and intestinal permeability was significantly better than that of Lactobacillus with low-yielding indole derivatives in a high Trp diet.And Lactobacillus combined with Trp intervention also had a certain regulatory effect on the intestinal flora of male BALB/c mice.Among them,Lactiplantibacillus plantarum DPUL-S164 produced more ILA both in vivo and in vitro,and the combination of L.plantarum DPUL-S164 and Trp significantly decreased the expression level of the serum pro-inflammatory cytokine interleukin(IL)-6 and increased the expression level of the anti-inflammatory cytokine IL-10,significantly improved the number of goblet cells in the mouse mucous layer and increased mucin and tight junction protein expression.Furthermore,L.plantarum DPUL-S164 combined with Trp intervention activated the aryl hydrocarbon receptors(Ah R)signaling pathway.Furthermore,we found that the expression of colonic tight junction protein was positively correlated with the expression of colonic Ah R,and the expression of Ah R was positively correlated with the concentrations of ILA and I3C in vivo.Therefore,we conclude that the ILA as Ah R ligand produced by L.plantarum DPUL-S164 regulated the Ah R pathway,thus up-regulating the expression of the tight junction protein and protecting the integrity of the epithelial barrier.
基金the financial support provided by“Pioneer”and“Leading Goose”R&D Program of Zhejiang(2022C020122022C02078)。
文摘Bitterness,one of the 5“basic tastes”,is usually undesired by humans.However,abundant literature reported that bitter fruits and vegetables have beneficial health effects due to their bitter contributors.This review provided an updated overview of the main bitter contributors of typical bitter fruits and vegetables and their health benefits.The main bitter contributors,including phenolics,terpenoids,alkaloids,amino acids,nucleosides and purines,were summarized.The bioactivities and wide range of beneficial effects of them on anti-cancers,anti-inflammations,anti-microbes,neuroprotection,inhibiting chronic and acute injury in organs,as well as regulating behavior performance and metabolism were reported.Furthermore,not only did the bitter taste receptors(taste receptor type 2 family,T2Rs)show taste effects,but extra-oral T2Rs could also be activated by binding with bitter components,regulating physiological activities via modulating hormone secretion,immunity,metabolism,and cell proliferation.This review provided a new perspective on exploring and explaining the nutrition of bitter foods,revealing the relationship between the functions of bitter contributors from food and T2Rs.Future trends may focus on revealing the possibility of T2Rs being targets for the treatment of diseases,exploring the mechanism of T2Rs mediating the bioactivities,and making bitter foods more acceptable without getting rid of bitter contributors.
文摘目的探讨白血病抑制因子受体(leukemia inhibitory factor receptor,LIFR)在非ST段抬高型心肌梗死(non-ST-segment elevation myocardial infarction,NSTEMI)患者中的表达情况及其与心肌重构的可能关联。方法前瞻性选取2023年1月至2024年11月于武汉大学人民医院行冠状动脉造影的急性心肌梗死患者188例,根据是否诊断为NSTEMI分为对照组94例和NSTEMI组94例。收集患者一般临床资料,采用线性回归分析LIFR及与其他指标的相关性。结果与对照组比较,NSTEMI组吸烟史、LIFR、N末端B型钠尿肽前体、肌钙蛋白I、肌酐、尿酸、白细胞计数显著升高,左心室射血分数显著降低,差异有统计学意义[48.94%vs 13.83%,P<0.01;5.82(4.23,8.11)mmol/L vs 0.97(0.60,1.41)mmol/L,P<0.01;2.53(1.24,9.71)pg/L vs 0.03(0.02,0.04),P<0.01;18.57(4.11,250.00)ng/L vs 0.00(0.00,0.00)ng/L,P<0.01;82.50(68.00,121.25)μmol/L vs 68.50(53.00,88.25)μmol/L,P<0.01;411.00(349.00,521.25)μmol/L vs 337.00(286.75,406.00)μmol/L,P<0.01;10.21(8.71,13.09)×10~9/L vs 6.22(4.67,7.46)×10~9/L,P<0.01;47.00(38.00,54.00)%vs 59.00(56.00,60.00)%,P<0.01]。心肌梗死患者血清LIFR与N末端B型钠尿肽前体、肌钙蛋白I及白细胞计数呈正相关(β=1.403,95%CI:10597.867~17327.087,P=0.000;β=0.232,95%CI:114.558~1769.808,P=0.026;β=0.336,95%CI:0.164~0.617,P=0.001)。结论LIFR可能通过炎症参与心肌梗死后心肌重构和心力衰竭的发展。
