Proteomics of the mediodorsal thalamic nucleus of rats with stress-induced gastric ulcer

BACKGROUND Stress-induced gastric ulcer(SGU) is one of the most common visceral complications after trauma. Restraint water-immersion stress(RWIS) can cause serious gastrointestinal dysfunction and has been widely used to study the pathogenesis of SGU to identify medications that can cure the disease. The mediodorsal thalamic nucleus(MD) is the centre integrating visceral and physical activity and contributes to SGU induced by RWIS. Hence, the role of the MD during RWIS needs to be studied.AIM To screen for differentially expressed proteins in the MD of the RWIS rats to further elucidate molecular mechanisms of SGU.METHODS Male Wistar rats were selected randomly and divided into two groups, namely, a control group and an RWIS group. Gastric mucosal lesions of the sacrificed rats were measured using the erosion index and the proteomic profiles of the MD were generated through isobaric tags for relative and absolute quantitation(iTRAQ) coupled with two-dimensional liquid chromatography and tandem mass spectrometry. Additionally, iTRAQ results were verified by Western blot analysis.RESULTS A total of 2853 proteins were identified, and these included 65 dysregulated(31 upregulated and 34 downregulated) proteins(fold change ratio ≥ 1.2). Gene Ontology(GO) analysis showed that most of the upregulated proteins are primarily related to cell division, whereas most of the downregulated proteins are related to neuron morphogenesis and neurotransmitter regulation. Ingenuity Pathway Analysis revealed that the dysregulated proteins are mainly involved in the neurological disease signalling pathways. Furthermore, our results indicated that glycogen synthase kinase-3 beta might be related to the central mechanismthrough which RWIS gives rise to SGU.CONCLUSION Quantitative proteomic analysis elucidated the molecular targets associated with the production of SGU and provides insights into the role of the MD. The underlying molecular mechanisms need to be further dissected.

Stress gastric ulcer after cardiac surgery: Pathogenesis risk factors and medical management

Stress ulcer lesions of upper gastrointestinal tract are well recognized in patients undergoing open cardiac surgery. Gastrointestinal bleeding following cardiac surgery is infrequent with significant morbidity and mortality. The pathogenesis of mucosal lesions and subsequent haemorrhage is complex and multifactorial. The diagnosis as well as the treatment of this complication remains a challenge for surgeons. Identifying the source of bleeding can be difficult. Despite of the successful control of haemorrhage using various combinations of endoscopic and pharmacological therapies, the mortality rate remains unchanged. Benefit of routine stress ulcer prophylaxis remains controversial.

Oral administration of hyperoxygenated solution for the prophylaxis of gastric ulceration induced by stress or Helicobacter pylori

Oxygen was first discovered by Sweden chemist Scheele in 1773 and convinced as an essential factor for living by French scientists in 1777.To tackle with different hypoxic emergencies,corresponding medical approaches,e.g.mask or nasal catheter oxygen inhalation,breathing machine,hyperbaric oxygen therapy etc.,have been contrived in succession.However,one mortal trouble exists in all these conventional ways,i.e.they must rely on the ventilation and gas exchange via lungs,thus not being able to promptly render oxygen to specific hypoxia tissues.Hyperoxygenated solution(HOS),a new kind of medical liquid which can be orally taken or intravenously administrated,has been widely applied as an auxiliary method of offering oxygen in China.A large number of experiments have proved its validity in the treatment of myocardial and cerebral ischemia/reperfusion injury,nerve lesions,shock,respiratory diseases,neonatal hypoxia and so forth.These findings suggest that HOS might not only play a role of increasing oxygen pressure in local region,but also conspicuously contribute to improving the pathologic process of hypoxia,which coincidently is the vital link in stress-induced lesions in the gastrointestinal tract.Additionally,Helicobacter pylori(H.pylori),a kind of microaerophilic(anaerobic)bacterium which can hardly survive in an aerobic atmosphere,has also been identified as an independent risk factor for the occurrence and development of ulceration.Considering the etiology of peptic ulceration and the features of HOS,we hypothesize that drinking HOS might prevent gastric ulceration caused by stress or anaerobic H.pylori.

comparison between tocotrienol and omeprazole on gastric growth factors in stress-exposed rats

AIM To investigate and compare the effects of tocotrienol and omeprazole on gastric growth factors in rats exposed to water-immersion restraint stress(WIRS).METHODS Twenty-eight male Wistar rats were randomly assigned to four groups of seven rats. The two control groups were administered vitamin-free palm oil(vehicle) and the two treatment groups were given omeprazole(20 mg/kg) or tocotrienol(60 mg/kg) by oral gavage. After 28 d of treatment, rats from one control group and both treated groups were subjected to WIRS one time for 3.5 h. Gastric lesions were measured and gastric tissues were obtained to measure vascular endothelial growth factor(VEGF), epidermal growth factor(EGF), basic fibroblast growth factor(b FGF), and transforming growth factor-alpha(TGF-α) m RNA expression. RESULTS Rats exposed to WIRS for 3.5 h demonstrated the presence of considerable ulcers in the form of gastric erosion. The lesion index in the stressed control(S) group was increased(P < 0.001) compared to the tocotrienol treated and omeprazole treated groups. Stress led to a decrease in gastric VEGF(P < 0.001), b FGF(P < 0.001) and TGF-α(P < 0.001) m RNA levels and caused an increase in EGF m RNA(P < 0.001) that was statistically significant compared to the nonstressed control group. Although both treatment agents exerted similar ulcer reducing ability, only treatment with tocotrienol led to increased expression of VEGF(P = 0.008), b FGF(P = 0.001) and TGF-α(P = 0.002) m RNA.CONCLUSION Tocotrienol provides gastroprotective effects in WIRSinduced ulcers. Compared to omeprazole, tocotrienol exerts a similar protective effect, albeit through multiple mechanisms of protection, particularly through up-regulation of growth factors that assist in repair of gastric tissue injuries.

Gastric mucosal damage in water immersion stress:Mechanism and prevention with GHRP-6

AIM:To investigate the mechanism of gastric mucosal demage induced by water immersion restraint stress(WRS) and its prevention by growth hormone releasing peptide-6(GHRP-6).METHODS:Male Wistar rats were subjected to conscious or unconscious(anesthetized) WRS,simple restraint(SR),free swimming(FS),non-water fluid immersion,immersion without water contact,or rats were placed in a cage surrounded by sand.To explore the sensitivity structures that influence the stress reaction besides skin stimuli,a group the rats had their eyes occluded.Cervical bilateral trunk vagotomy or atropine injection was performed in some rats to assess the parasympathetic role in mucosal damage.Gastric mucosal lesions,acid output and heart rate variability were measured.Plasma renin,endothelin-1 and thromboxane B2 and gastric heat shock protein 70 were also assayed.GHRP-6 was injected [intraperitoneal(IP) or intracerebroventricular(ICV)] 2 h before the onset of stress to observe its potential prevention of the mucosal lesion.RESULTS:WRS for 6 h induced serious gastric mucosal lesion [lesion area,WRS 81.8 ± 6.4 mm 2 vs normal control 0.0 ± 0.0 mm 2,P < 0.01],decreased the heart rate,and increased the heart rate variability and gastric acid secretion,suggesting an increase in vagal nervecarrying stimuli.The mucosal injury was inversely correlated with water temperature(lesion area,WRS at 35 ℃ 56.4 ± 5.2 mm 2 vs WRS at 23 ℃ 81.8 ± 6.4 mm 2,P < 0.01) and was consciousness-dependent.The injury could not be prevented by eye occlusion,but could be prevented by avoiding contact of the rat body with the water by dressing it in an impermeable plastic suit.When water was replaced by vegetable oil or liquid paraffin,there were gastric lesions in the same grade of water immersion.When rat were placed in a cage surrounded by sand,there were no gastric lesions.All these data point to a remarkable importance of cutenuous information transmitted to the high neural center that by vagal nerves reaching the gastric mucosa.FS alone also induced serious gastric injury,but SR could not induce gastric injury.Bilateral vagotomy or atropine prevented the WRS-induced mucosal lesion,indicating that increased outflow from the vagal center is a decisive factor in WRS-induced gastric injury.The mucosal lesions were prevented by prior injection of GHRP-6 via IP did,but not via ICV,suggesting that the protection is peripheral,although a sudden injection is not equivalent to a physiological release and uptake,which eventually may affect the vagal center.CONCLUSION:From the central nervous system,vagal nerves carry the cutaneous stimuli brought about by the immersion restraint,an experimental model for inducing acute gastric erosions.GHRP-6 prevents the occurrence of these lesions.

Potential protective effects of Clostridium butyricum on experimental gastric ulcers in mice

AIM: To investigate the effects of Clostridium butyricum(C. butyricum) on experimental gastric ulcers(GUs) induced by alcohol, restraint cold stress, or pyloric ligation in mice, respectively.METHODS: One hundred and twenty mice were randomly allocated into three types of gastric ulcer models(n = 40 each), induced by alcohol, restraint cold stress, or pyloric ligation. In each GU model, 40 mice were allocated into four groups(n = 10 each): the sham control group; model group(GU induction without pretreatment); C. butyricum group(GU induction with C. butyricum pretreatment); and Omeprazole group(GU induction with Omeprazole pretreatment). Theeffects of C. butyricum were evaluated by examining the histological changes in the gastric mucosal erosion area, the activities of superoxide dismutase(SOD) and catalase(CAT), the level of malondialdehyde(MDA), and the contents of interleukin(IL)-1b, tumor necrosis factor(TNF)-α, leukotriene B4(LTB4) and 6-keto-PGF-1α(degradation product of PGI2) in the gastric tissue.RESULTS: Our data showed that C. butyricum significantly reduced the gastric mucosal injury area and ameliorated the pathological conditions of the gastric mucosa. C. butyricum not only minimized the decreases in activity of SOD and CAT, but also reduced the level of MDA in all three GU models used in this study. The accumulation of IL1-b, TNF-α and LBT4 decreased, while 6-keto-PGF-1α increased with pretreatment by C. butyricum in all three GU models.CONCLUSION: Our data demonstrated the protective effects of pretreatment with C. butyricum on antioxidation and anti-inflammation in different types of GU models in mice. Further studies are needed to explore its potential clinical benefits.

Dynamic functional and ultrastructural changes of gastric parietal cells induced by water immersion-restraint stress in rats

瞄准：为了调查胃的壁细胞的动态功能、极端的结构的变化，走水路在老鼠导致了沉浸抑制应力(WRS ) 。方法：Sprague-Dawley (SD ) 老鼠的 WRS 模型被建立。56 只男 SD 老鼠随机被划分成控制组，压力组和压力以后的组。压力组被划分成 1， 2 和 4 h 压力亚群。压力以后的组被划分成 24， 48 和 72 h 亚群。胃的果汁，胃粘膜的溃疡索引(UI ) 和 H (+) 的 pH 价值，胃的壁细胞的 K (+)-ATPase 活动被测量。壁细胞的 Ultrastructural 变化在传播电子显微镜(TEM ) 下面被观察。结果：胃的果汁的 pH 价值在压力组 time-dependently 减少了并且在压力以后的组增加了。H (+) ，胃的壁细胞的 K (+)-ATPase 活动和胃粘膜的 UI 在压力组 time-dependently 增加了并且在压力以后的组减少了。比作控制组， pH 价值显著地减少了(P = 0.0001 ) ， UI 和 H (+) ，显著地增加的 K (+)-ATPase 活动(P = 0.0001， P = 0.0174 ) 在 4 h 压力亚群。UI 断然与压力时间被联系(r = 0.9876， P 【 0.01 ) 但是否定地与 pH 珍视(r =-0.8724, P 【 0.05 ) 。壁细胞在压力组变得活跃，特别在 4 h 压力亚群，很多的细胞内部的小管和线粒体在 TEM 下面在被观察。在压力以后的组，壁细胞恢复了到休眠状态。结论：壁细胞的酸分泌物在发展期间与他们的极端结构的变化一致并且 WRS 和胃的粘膜损害的度导致的压力溃疡愈合，建议胃的酸在压力溃疡的发展起一个重要作用并且仔细与 WRS 导致的胃的粘膜损害的恢复被联系。

Octreotide ameliorates gastric lesions in chronically mild stressed rats

AIM:To evaluate the effect of chronic mild stress(CMS) on the emergence of gastric ulcers and possible modulation by octreotide,a synthetic somatostatin analogue. METHODS:Adult male Wistar rats were subjected to nine different unpredictable random stress procedures for 21 d,a multifactorial interactional animal model for CMS.Octreotide was administered daily for 21 d at two dose levels(50 and 90μg/kg)before exposure to stress procedure.Macro-and microscopical assessments were made,in addition to quantification of plasma corticosterone and gastric mucosal inflammatory,oxidative stress, and apoptotic biomarkers. RESULTS:Exposure to CMS elevated plasma corticosterone(28.3±0.6μg/dL,P=0.002),an event that was accompanied by gastric lesions(6.4±0.16 mm,P=0.01) and confirmed histopathologically.Moreover,the insult elevated gastric mucosal lipid peroxides(13±0.5 nmol/g tissue,P=0.001),tumor necrosis factor-α(3008.6±78.18 pg/g tissue,P<0.001),prostaglandin E2(117.1 ±4.31 pg/g tissue,P=0.002),and caspase-3 activity (2.4±0.14 OD/mg protein,P=0.002).Conversely,CMS mitigated interleukin-10(627.9±12.82 pg/g tissue,P= 0.001).Furthermore,in animals exposed to CMS,octreotide restored plasma corticosterone(61%and 71%from CMS,P=0.002)at both dose levels.These beneficial effects were associated with a remarkable suppression of gastric lesions(38%and 9%from CMS,P=0.01)and reversal of derangements in gastric mucosa. CONCLUSION:The current investigation provides evidence that exposure to CMS induces gastric ulceration, which was alleviated by administration of octreotide possibly possessing antioxidant,anti-inflammatory,and anti-apoptotic actions.

Protective effect of melatonin against multistress condition induced lipid peroxidation via measurement of gastric mucosal lesion and plasma malondialdehyde levels in rats

AIM: To study the protective effect of a natural antioxi- dant, melatonin, against multistress condition induced lipid peroxidation via determination of gastric damage and plasma malondialdehyde (MDA) level by high perfor- mance liquid chromatography in rats. METHODS: We compared indomethacin-induced gas- tric damage and MDA plasma level in three groups of rats: unoperated, bile duct ligated and sham-operated and evaluated the role of the melatonin on gastric dam- age and plasma MDA level. Indomethacin and melatonin were injected intraperitoneally in doses of 50 mg/kg and 20 mg/kg, respectively. Animals were killed 4 h after in- domethacin injection. RESULTS: Indomethacin induced more severe gastric damage and plasma MDA level in bile duct ligated ani- mals was significantly higher (3.1 ± 0.04 μmol/L) than sham (2.8 ± 0.04 μmol/L) and unoperated animals (1.4 ± 0.08 μmol/L). Pretreatment with melatonin reduced indomethacin-induced gastric damage and plasma MDA level. CONCLUSION: Considering the results of this study, we suggest that in multistress conditions the intensity of gastric damage and the plasma MDA level are great and melatonin reduces the negative effect of lipid peroxida- tion and cell damage by oxidative stress in multistress conditions due to its antioxidizing activity.

Association of high expression in rat gastric mucosal heat shock protein 70 induced by moxibustion pretreatment with protection against stress injury

AIM:To study the effect of moxibustion on Zusanli or Liangmeng point on gastric mucosa injury in stress-induced ulcer rats and its correlation with the expression of heat shock protein 70 (HSP70). METHODS:Sixty healthy SD rats (30 males,30 females) were divided into control group,injury model group,Zushanli point group,Liangmeng point group. Stress gastric ulcer model was induced by binding cold stress method. Gastric mucosa ulcer injury (UI) index was calculated by Guth method. Gastric mucosa blood flow (GMBF) was recorded with a biological signal analyzer. Protein content and gene expression in gastric mucosal HSP70 were detected by immunohistochemistry (IHC) and reverse transcription polymerase chain reaction (RT-PCR). Thiobarbital method was used to determine malondialdehyde (MDA) content. Gastric mucosal endothelin (ET) and prostaglandin E2 (PGE2) were analyzed by radioimmunoassay. RESULTS:High gastric mucosal UI index,high HSP70 expression,low GMBF and PGF2,elevated MDA and ET were observed in gastric mucosa of rats subjected to cold stress. Moxibustion on Zusanli or Liangmeng point decreased rat gastric mucosal UI index,MDA and ET. Conversely,the expression of HSP70,GMBF,and PGE2 was elevated in gastric mucosa after pretreatment with moxibustion on Zusanli or Liangmeng point. The observed parameters were significantly different between Zusanli and Liangmeng points. CONCLUSION:Pretreatment with moxibustion on Zusanli or Liangmeng point protects gastric mucosa against stress injury. This protection is associated with the higher expression of HSP70 mRNA and protein,leading to release of PGE2 and inhibition of MDA and ET,impairment of gastric mucosal index.

Experimental study on mechanism and protection of stress ulcer produced by explosive noise

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Hemorrhagic gastric and duodenal ulcers after the Great East Japan Earthquake Disaster

AIM:To elucidate the characteristics of hemorrhagic gastric/duodenal ulcers in a post-earthquake period within one medical district.METHODS:Hemorrhagic gastric/duodenal ulcers in the Iwate Prefectural Kamaishi Hospital during the 6-mo period after the Great East Japan Earthquake Disaster were reviewed retrospectively.The subjects were 27patients who visited our hospital with a chief complaint of hematemesis or hemorrhagic stool and were diagnosed as having hemorrhagic gastric/duodenal ulcers by upper gastrointestinal endoscopy during a 6-mo period starting on March 11,2011.This period was divided into two phases:the acute stress phase,comprising the first month after the earthquake disaster,and the chronic stress phase,from the second through the sixth month.The following items were analyzed according to these phases:age,sex,sites and number of ulcers,peptic ulcer history,status of Helicobacter pylori(H.pylori)infection,intake of non-steroidal anti-inflammatory drugs,and degree of impact of the earthquake disaster.RESULTS:In the acute stress phase from 10 d to 1mo after the disaster,the number of patients increased rapidly,with a nearly equal male-to-female ratio,and the rate of multiple ulcers was significantly higher than in the previous year(88.9%vs 25%,P<0.005).In the chronic stress phase starting 1 mo after the earthquake disaster,the number of patients decreased to a level similar to that of the previous year.There were more male patients during this period,and many patients tended to have a solitary ulcer.All patients with duodenal ulcers found in the acute stress phase were negative for serum H.pylori antibodies,and this was significantly different from the previous year’s positive rate of 75%(P<0.05).CONCLUSION:Severe stress caused by an earthquake disaster may have affected the characteristics of hemorrhagic gastric/duodenal ulcers.

运动应激性胃溃疡发生机制探讨

运动应激性胃溃疡是运动引起的应激性溃疡(stress ulcer,SU),是一种以黏膜糜烂、溃疡及出血为特征的急性胃黏膜病变,临床调查显示,应激性溃疡除了会导致胃肠道黏膜的急性糜烂、溃疡,通常还会伴随胃肠道出血增多,发展至后期预后不良。自胃溃疡被发现并命名以来,研究人员一直在探讨溃疡的发生机制,由于运动应激性胃溃疡的发病范围广、频率高,其发生机制复杂,本文主要从运动引起的氧化应激产生过多的自由基会损伤胃肠黏膜细胞损坏黏膜的屏障功能、运动系统损伤会加重机体的炎症反应、运动时胃肠道血流量减少易出现缺血损伤、过度运动影响细胞代谢能量供给4个方面对运动应激性胃溃疡发生的机制进行分析总结,旨在为运动应激性胃溃疡的防治提供更多的借鉴与参考。

基于Nrf2/HO-1信号通路探究胃复春胶囊辅助治疗重症肺炎合并应激性胃溃疡临床研究

背景重症肺炎合并应激性溃疡发病机制并未完全阐述,尚无特效治疗方案,预后普遍较差,明确其发病机制,确定治疗靶点有望控制病情进展,促使疾病转归.目的探讨基于核因子E2相关因子2/血红素氧合酶-1(nuclear factor erythroid 2 related factor 2/heme oxygenase-1,Nrf2/HO-1)信号通路探究胃复春胶囊辅助治疗重症肺炎合并应激性胃溃疡效果.方法收集2021-01/2023-01舟山市中医医院108例重症肺炎合并应激性胃溃疡患者临床资料进行回顾性分析,根据治疗方案分为对照组(n=54)和研究组(n=54),分别采取奥美拉唑、奥美拉唑+胃复春胶囊,连续治疗1 wk.统计2组治疗总有效率、临床症状缓解时间、不良反应、复发率及治疗前后生长抑素(somatostatin,SS)、血管活性肠肽(vasoactive intestinal peptide,VIP)、胃泌素(gastrin,GAS)、Nrf2/HO-1信号通路相关mRNA、蛋白表达、氧化应激指标[丙二醛(malondialdehyde,MDA)、一氧化氮(nitric oxide,NO)、8-羟基脱氧鸟苷酸(8-Hydroxy-2'-deoxyguanine,8-OHdG)].结果研究组治疗总有效率较对照组高,临床症状缓解时间较对照组短(P<0.05);治疗1 wk后研究组VIP、GAS、SS含量及其差值均高于对照组(P<0.05);治疗1 wk后研究组Nrf2、HO-1 mRNA、蛋白及NO含量均高于对照组,MDA、8-OHdG含量低于对照组,差值均高于对照组(P<0.05);2组不良反应及复发率比较差异无统计学意义.结论胃复春胶囊辅助治疗重症肺炎合并应激性胃溃疡效果确切,有利于增加胃肠激素含量,缩短症状缓解时间,且安全性高,可能机制与上调Nrf2/HO-1信号通路有关.

芪贝消痈汤治疗幽门螺杆菌阳性胃溃疡临床研究

目的:基于氧化应激反应、核因子κB(NF-κB)信号通路探讨芪贝消痈汤治疗幽门螺杆菌(HP)阳性胃溃疡的效果观察。方法:选取HP阳性胃溃疡患者96例为研究对象,按照随机数字表法分为对照组和观察组,各48例。对照组采用西医药物治疗,观察组在对照组基础联合芪贝消痈汤治疗。比较两组治疗4周后临床疗效,治疗前及治疗4周后中医症候积分、胃镜检查指标(溃疡直径、底部厚苔面积、溃疡周围黏膜充血面积及再生上皮面积)、氧化应激指标[超氧化物歧化酶(SOD)、丙二醛(MDA)、一氧化氮(NO)]、炎性反应指标[肿瘤坏死因子-α(TNF-α)、白细胞介素8(IL-8)、基质金属蛋白酶9(MMP-9)、基质金属蛋白酶抑制剂1(TIMP-1)]、NF-κB阳性表达率,比较治疗后1个月HP根除率及12个月内复发情况。结果:治疗4周后,观察组临床疗效为93.75%,高于对照组的79.17%(P<0.05);治疗4周后,两组胃脘胀痛、恶心呕吐、嗳气反酸、胃脘灼烧感症候积分、溃疡直径、底部厚苔面积及周围黏膜充血面积、血清MDA、TNF-α、IL-8、MMP-9、TIMP-1水平较治疗前降低,且观察组低于对照组(P<0.05);两组再生上皮面积、血清SOD及NO水平较治疗前升高,且观察组高于对照组(P<0.05);治疗4周后观察组NF-κB阳性表达率为22.92%,低于对照组的43.75%(P<0.05);治疗后1个月观察组HP根除率为93.75%,高于对照组的70.83%(P<0.05);治疗后12个月内观察组复发率为6.25%,低于对照组的20.83%(P<0.05)。结论:芪贝消痈汤能通过减弱氧化应激反应、抑制NF-κB信号通路表达,改善HP阳性胃溃疡患者临床症状,缓解胃的炎性反应,进而促进溃疡修复,减少复发风险。

藏药日官孜玛通过NF-κB信号通路对小鼠乙醇性胃溃疡的胃保护作用

目的:通过灌胃无水乙醇建立小鼠乙醇性胃溃疡模型,研究日官孜玛总提物对小鼠乙醇性胃溃疡的保护作用。方法:随机将60只KM系小鼠分为空白对照组、模型组、奥美拉唑阳性组、日官孜玛总提物低、中、高剂量组,共6组每组10只。灌胃给药一周后,禁食不禁水24h,末次给药1.5h后,除空白对照组给同等体积的生理盐水外,其余五组按照体重灌胃0.1mL/10g的无水乙醇造模1h,建立小鼠乙醇性胃溃疡模型。造模1h后,取血取胃,计算乙醇性胃溃疡的损伤发生率及损伤抑制率,制备血清上层液和胃组织匀浆液,苏木精-伊红(HE)染色观察胃组织病理学变化;试剂盒检测血清中一氧化氮(NO)、超氧化物歧化酶(SOD)和胃组织中丙二醛(MDA)、髓过氧化物酶(MPO)的水平;实时荧光定量PCR(qRT-PCR)检测胃组织中p65、IKK-β、TNF-α和IL-1β的mRNA表达情况。结果:正常对照组小鼠胃黏膜光滑完整,无出血现象,其余各组小鼠均出现了黏膜出血、组织不同程度坏死。模型组小鼠胃损伤最为严重,表现为大块的出血面积,呈鲜红色。与正常组相比,模型对照组HE染色图表现为组织整体结构异常,黏膜层小面积坏死,黏膜下层结缔组织排列疏松,少见淋巴细胞浸润,血清中NO、胃组织中MDA、MPO及胃组织中p65、IKK-β、TNF-α和IL-1β的mRNA表达水平显著升高(P<0.05),血清中SOD水平降低(P<0.05);与模型组相比,阳性组和高、中、低剂量日官孜玛总提物给药组则表现为点状或条状出血,出血面积明显缩小、损伤发生率明显下降(P<0.05)、小鼠胃组织病理损伤有明显改善,血清、组织相关指标均出现不同程度的改善。结论:日官孜玛总提物能通过抑制NF-κB信号通路中关键基因p65、IKK-β、TNF-α和IL-1β的mRNA表达,抑制氧化应激和炎症反应,对小鼠乙醇性胃溃疡产生保护性作用。

云南白药辅治脑出血后应激性胃溃疡临床观察

目的:观察云南白药辅治脑出血后应激性胃溃疡的疗效。方法:72例用随机数字表法分为两组各36例。两组均用康复新液联合奥美拉唑治疗,观察组加用云南白药治疗。结果:总有效率、SOD水平、胃酸pH值、SS水平观察组高于对照组(P<0.05),ROS、MDA、GAS、IL-6、TNF-α、IL-2水平观察组低于对照组(P<0.05)。结论:云南白药辅治脑出血后应激性胃溃疡可提高疗效。

黄芪建中汤加味对脾胃虚寒型胃溃疡的影响

目的:探讨黄芪建中汤加味对脾胃虚寒型胃溃疡的影响。方法:选取2022年6月—2023年8月淄博市中医医院收治的76例脾胃虚寒型胃溃疡患者。随机将其分为对照组和观察组,各38例。对照组给予常规治疗,观察组在对照组基础上给予黄芪建中汤加味治疗。比较两组治疗前后炎症因子、中医症候积分、氧化应激指标及临床疗效。结果:治疗后,两组白细胞介素-10(IL-10)、白细胞介素-6(IL-6)与肿瘤坏死因子-α(TNF-α)水平低于治疗前,观察组IL-6、IL-10、TNF-α水平低于对照组,差异有统计学意义(P<0.05)。治疗后,两组丙二醛(MDA)低于治疗前,超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)高于治疗前,观察组MDA低于对照组,SOD及GSH-Px均高于对照组,差异有统计学意义(P<0.05)。治疗后,两组胃脘疼痛、胸胁满闷、食欲不振、嗳气吞酸及倦怠乏力评分均低于治疗前,观察组胃脘疼痛、胸胁满闷、食欲不振、嗳气吞酸及倦怠乏力评分均低于对照组,差异有统计学意义(P<0.05)。观察组总有效率为94.74%,高于对照组的76.32%,差异有统计学意义(P<0.05)。结论:在西药治疗基础上联合黄芪建中汤加味可有效减轻脾胃虚寒型胃溃疡患者的炎症反应,改善其氧化应激反应,改善其病情,提高治疗效果。