Aberrant right subclavian artery(arteria lusoria) is the most common congenital root anomaly, remaining asymptomatic in most cases. Nevertheless, some of the 20%-40% of those affected present tracheo-esophageal sympto...Aberrant right subclavian artery(arteria lusoria) is the most common congenital root anomaly, remaining asymptomatic in most cases. Nevertheless, some of the 20%-40% of those affected present tracheo-esophageal symptoms. We report on a 6-year-old previously healthy girl presenting with progressive dysphagia over 4 wk. Diagnostics including barium swallow, echocardiography and magnetic resonance angiography(MRA) revealed a retro-esophageal compression by an aberrant right subclavian artery. Despite the successful, uneventful transposition of this arteria lusoria to the right common carotid via right-sided thoracotomy, the girl was suffering from persisting dysphagia. Another barium swallow showed the persistent compression of the esophagus on the level where the arteria lusoria had originated. As MRA showed no evidence of a significant re-obstruction by the transected vascular stump, we suspected a persisting ligamentum arteriosum. After a second surgical intervention via left-sided thoracotomy consisting of transecting the obviously persisting ligamentum and shortening the remaining arterial stump of the aberrant right subclavian artery, the patient recovered fully. In this case report we discuss the potential relevance of a persisting ligamentum arteriosum for patients with leftaortic arch suffering from dysphagia lusoria and rational means of diagnosing, as well as the surgical options to prevent re-do surgery.展开更多
AIM： TO investigate the role of Lactobacillus crispatus （L. crispatus） strain China Center for Type Culture Col- lection （CCTCC） M206119 in intestinal inflammation.METHODS： Forty 8-wk-old Balb/c mice （20± ...AIM： TO investigate the role of Lactobacillus crispatus （L. crispatus） strain China Center for Type Culture Col- lection （CCTCC） M206119 in intestinal inflammation.METHODS： Forty 8-wk-old Balb/c mice （20± 2 g） were divided into four groups of 10 mice each. Three groups that had received dextran sulfate sodium （DSS） were administered normal saline, sulfasalazine or CCTCC M206119 strain, and the fourth group received none of these. We assessed the severity of colitis using a disease activity index, measured the colon length and weight, collected stools and mesenteric lymph nodes for bacterial microflora analysis. One centimeter of the proximal colon, middle colon and distal colon were collected and fixed in 10% buffered formalin, dehydrated in ethanol, and embedded in paraffin. Interleukin （IL）- 1β, IL-6 and tumor necrosis factor （TNF）-α expression was detected using reverse transcription polymerase chain reaction. Protective factors zonula occludens （ZO）-1 and β-defensin 2 were detected by immunoblot-ting. The features of CCTCC M206119 strain were identified based on morphology, biochemical profile, and 16S RNA sequencing.RESULTS： DSS-colitis animals treated with CCTCC M206119 had markedly more severe disease, with greater weight loss, diarrhea, fecal bleeding, and shortened colon length. In addition, the CCTCC-M206119- treated group had comparatively higher histologi- cal scores and more neutrophil infiltration than the controls. Expression of protective factors ZO-1 and β-defensin 2 was downregulated due to destruction of the mucosal barrier after CCTCC M206119 strain treatment. An in vitro assay demonstrated that CCTCC M206119 strain increased the nuclear translocation of nuclear factor-κB in epithelial cells. Intestinal proinflam- matory or anti-inflammatory cytokine responses were evaluated. Proinflammatory colonic cytokine （IL-Iβ, IL-6 and TNF-α） levels were clearly increased in CCTCC- M206119-treated animals, whereas anti-inflammatory colonic cytokine （IL-10） level was lowered compared with saline or 5-aminosalicylic-acid-treated DSS-colitis mice. Next, CCTCC M206119 strain was characterized as 1. crispatus by microscopic morphology, biochemical tests and 16S rRNA gene level.CONCLUSION： Not all lactobacilli are beneficial for in- testinal inflammation, and L. crispatus CCTCC M206119 strain is involved in exacerbation of intestinal inflamma- tion in DSS-colitis mice.展开更多
目的:探讨抗CXC趋化因子配体1(CXCL1)中和抗体对葡聚糖硫酸钠(dextra sulfate sodium,DSS)诱导的急性溃疡性结肠炎(ulcerative colitis,UC)小鼠模型的治疗作用,并阐明其对结肠组织中细胞因子TNF-α,IFN-γ,IL-17,IL-10的表达及中性粒细...目的:探讨抗CXC趋化因子配体1(CXCL1)中和抗体对葡聚糖硫酸钠(dextra sulfate sodium,DSS)诱导的急性溃疡性结肠炎(ulcerative colitis,UC)小鼠模型的治疗作用,并阐明其对结肠组织中细胞因子TNF-α,IFN-γ,IL-17,IL-10的表达及中性粒细胞浸润的影响。方法:雌性BALB/c小鼠48只,随机分为正常对照组(DSS-)、疾病组(DSS+saline)、抗CXCL1中和抗体治疗组(DSS+anti-CXCL1 Ab)和治疗对照组(DSS+IgG Ab),每组12只。正常对照组小鼠给予蒸馏水自由饮用,疾病组、治疗组及治疗对照组给予3.5%的DSS自由饮用,至第8天处理小鼠。其中治疗组于造模第3天和第6天腹腔注射抗CXCL1中和抗体(4 mg/kg),治疗对照组予以等量大鼠IgG抗体,正常对照组和疾病组注射等量生理盐水。对各组小鼠进行疾病活动指数评分(disease activity index,DAI)及结直肠组织损伤学评分,并采用RT-PCR法检测各组小鼠结肠组织中细胞因子TNF-α,IFN-γ,IL-17和IL-10的表达。运用免疫组织化学检测各组小鼠结肠组织中中性粒细胞特异性标志物髓过氧化物酶(myeloperoxidase,MPO)的表达。结果:与正常对照组相比,疾病组小鼠DAI评分及结直肠组织损伤学评分明显增高,但是予以抗CXCL1中和抗体干预治疗后能明显减低急性UC小鼠的DAI和结直肠组织损伤学评分。RT-PCR检测结果显示:与正常对照组相比,疾病组小鼠结直肠组织中促炎细胞因子TNF-α,IFN-γ和IL-17 m RNA表达水平均显著升高,抑炎因子IL-10 m RNA表达下降。而使用抗CXCL1中和抗体干预治疗,明显抑制DSS诱导的小鼠结肠组织中促炎细胞因子TNF-α,IFN-γ和IL-17 m RNA表达水平的升高及抑炎因子IL-10 m RNA表达水平的下降,差异具有统计学意义(P<0.05)。免疫组织化学结果显示:疾病组小鼠结肠组织中中性粒细胞的浸润明显增加,予以抗CXCL1中和抗体治疗能显著减少结肠组织中中性粒细胞的浸润,差异具有统计学意义(P<0.05)。结论:抗CXCL1中和抗体缓解了DSS诱导的急性UC的进展,其发挥抗炎作用的机制可能与抑制促炎因子的表达和中性粒细胞的浸润有关。展开更多
文摘Aberrant right subclavian artery(arteria lusoria) is the most common congenital root anomaly, remaining asymptomatic in most cases. Nevertheless, some of the 20%-40% of those affected present tracheo-esophageal symptoms. We report on a 6-year-old previously healthy girl presenting with progressive dysphagia over 4 wk. Diagnostics including barium swallow, echocardiography and magnetic resonance angiography(MRA) revealed a retro-esophageal compression by an aberrant right subclavian artery. Despite the successful, uneventful transposition of this arteria lusoria to the right common carotid via right-sided thoracotomy, the girl was suffering from persisting dysphagia. Another barium swallow showed the persistent compression of the esophagus on the level where the arteria lusoria had originated. As MRA showed no evidence of a significant re-obstruction by the transected vascular stump, we suspected a persisting ligamentum arteriosum. After a second surgical intervention via left-sided thoracotomy consisting of transecting the obviously persisting ligamentum and shortening the remaining arterial stump of the aberrant right subclavian artery, the patient recovered fully. In this case report we discuss the potential relevance of a persisting ligamentum arteriosum for patients with leftaortic arch suffering from dysphagia lusoria and rational means of diagnosing, as well as the surgical options to prevent re-do surgery.
文摘AIM： TO investigate the role of Lactobacillus crispatus （L. crispatus） strain China Center for Type Culture Col- lection （CCTCC） M206119 in intestinal inflammation.METHODS： Forty 8-wk-old Balb/c mice （20± 2 g） were divided into four groups of 10 mice each. Three groups that had received dextran sulfate sodium （DSS） were administered normal saline, sulfasalazine or CCTCC M206119 strain, and the fourth group received none of these. We assessed the severity of colitis using a disease activity index, measured the colon length and weight, collected stools and mesenteric lymph nodes for bacterial microflora analysis. One centimeter of the proximal colon, middle colon and distal colon were collected and fixed in 10% buffered formalin, dehydrated in ethanol, and embedded in paraffin. Interleukin （IL）- 1β, IL-6 and tumor necrosis factor （TNF）-α expression was detected using reverse transcription polymerase chain reaction. Protective factors zonula occludens （ZO）-1 and β-defensin 2 were detected by immunoblot-ting. The features of CCTCC M206119 strain were identified based on morphology, biochemical profile, and 16S RNA sequencing.RESULTS： DSS-colitis animals treated with CCTCC M206119 had markedly more severe disease, with greater weight loss, diarrhea, fecal bleeding, and shortened colon length. In addition, the CCTCC-M206119- treated group had comparatively higher histologi- cal scores and more neutrophil infiltration than the controls. Expression of protective factors ZO-1 and β-defensin 2 was downregulated due to destruction of the mucosal barrier after CCTCC M206119 strain treatment. An in vitro assay demonstrated that CCTCC M206119 strain increased the nuclear translocation of nuclear factor-κB in epithelial cells. Intestinal proinflam- matory or anti-inflammatory cytokine responses were evaluated. Proinflammatory colonic cytokine （IL-Iβ, IL-6 and TNF-α） levels were clearly increased in CCTCC- M206119-treated animals, whereas anti-inflammatory colonic cytokine （IL-10） level was lowered compared with saline or 5-aminosalicylic-acid-treated DSS-colitis mice. Next, CCTCC M206119 strain was characterized as 1. crispatus by microscopic morphology, biochemical tests and 16S rRNA gene level.CONCLUSION： Not all lactobacilli are beneficial for in- testinal inflammation, and L. crispatus CCTCC M206119 strain is involved in exacerbation of intestinal inflamma- tion in DSS-colitis mice.
文摘目的:探讨抗CXC趋化因子配体1(CXCL1)中和抗体对葡聚糖硫酸钠(dextra sulfate sodium,DSS)诱导的急性溃疡性结肠炎(ulcerative colitis,UC)小鼠模型的治疗作用,并阐明其对结肠组织中细胞因子TNF-α,IFN-γ,IL-17,IL-10的表达及中性粒细胞浸润的影响。方法:雌性BALB/c小鼠48只,随机分为正常对照组(DSS-)、疾病组(DSS+saline)、抗CXCL1中和抗体治疗组(DSS+anti-CXCL1 Ab)和治疗对照组(DSS+IgG Ab),每组12只。正常对照组小鼠给予蒸馏水自由饮用,疾病组、治疗组及治疗对照组给予3.5%的DSS自由饮用,至第8天处理小鼠。其中治疗组于造模第3天和第6天腹腔注射抗CXCL1中和抗体(4 mg/kg),治疗对照组予以等量大鼠IgG抗体,正常对照组和疾病组注射等量生理盐水。对各组小鼠进行疾病活动指数评分(disease activity index,DAI)及结直肠组织损伤学评分,并采用RT-PCR法检测各组小鼠结肠组织中细胞因子TNF-α,IFN-γ,IL-17和IL-10的表达。运用免疫组织化学检测各组小鼠结肠组织中中性粒细胞特异性标志物髓过氧化物酶(myeloperoxidase,MPO)的表达。结果:与正常对照组相比,疾病组小鼠DAI评分及结直肠组织损伤学评分明显增高,但是予以抗CXCL1中和抗体干预治疗后能明显减低急性UC小鼠的DAI和结直肠组织损伤学评分。RT-PCR检测结果显示:与正常对照组相比,疾病组小鼠结直肠组织中促炎细胞因子TNF-α,IFN-γ和IL-17 m RNA表达水平均显著升高,抑炎因子IL-10 m RNA表达下降。而使用抗CXCL1中和抗体干预治疗,明显抑制DSS诱导的小鼠结肠组织中促炎细胞因子TNF-α,IFN-γ和IL-17 m RNA表达水平的升高及抑炎因子IL-10 m RNA表达水平的下降,差异具有统计学意义(P<0.05)。免疫组织化学结果显示:疾病组小鼠结肠组织中中性粒细胞的浸润明显增加,予以抗CXCL1中和抗体治疗能显著减少结肠组织中中性粒细胞的浸润,差异具有统计学意义(P<0.05)。结论:抗CXCL1中和抗体缓解了DSS诱导的急性UC的进展,其发挥抗炎作用的机制可能与抑制促炎因子的表达和中性粒细胞的浸润有关。
