Therapeutic effect of zhuodu theory on ulcerative colitis and its effect on brain-gut peptide in serum and inflammatory factor

Objective:To investigate the therapeutic effect of traditional Chinese medicine xiezhuojiedu decoction on ulcerative colitis(UC)based on zhuodu theory and its effect on serum brain-gut peptide and inflammatory factors.Methods:110 cases of UC patients were divided into 2 groups according to the random number table method,with 55 cases in each group.The control group was treated with mesalazine,and the treatment group was given oral administration of Chinese medicine xiezhuojiedu decoction on the basis of the control group.Both groups received continuous treatment for 8 weeks.Integral of TCM syndromes,serum inflammatory factor and brain-gut peptide before and after treatment were compared between the two groups.The clinical efficiency,mucosal healing rate and endoscopic response rate of the two groups were compared.Results:After treatment,Integral of the main TCM syndromes abdominal pain,diarrhea,abdominal distention,mucous hematochezia,tenesmus of the treatment group were lower than the control group(P<0.01),the levels of serum(Tumor necrosis factor-α,(TNF-α),Interleukin(IL)-33,Substance P(SP)were lower than the control group(P<0.01),the levels of IL-10,vasoactive intestinal peptide(VIP),Somatostatin(SS)were higher than the control group(P<0.01),the clinical efficiency and mucosal healing rate were higher than control group(P<0.05),The difference was statistically significant.Conclusion:Based on the zhuodu theory,the xiezhuojiedu decoction can effectively regulate the levels of inflammatory factor and brain-gut peptide in the treatment of UC,improve the symptoms of patients,and promote the repair of intestinal mucosa.It's effective in treatment.

Effect of amitriptyline on gastrointestinal function and brain-gut peptides: A double-blind trial

AIM: To study the effects of low-dose amitriptyline (AMT) on gastrointestinal function and brain-gut peptides in healthy Chinese volunteers. METHODS: This was a double-blind, randomised, placebo-controlled, two-period cross-over trial. Twentyeight healthy volunteers were randomised and administered 1-wk treatments of AMT (12.5 mg tid) or placebo. Before and during the final two days of treatment, gastric emptying, proximal gastric accommodation and visceral sensitivity were measured by drinkingultrasonography test; the orocecal transit time (OCTT) was measured by lactulose hydrogen breath test, and fasting blood was collected. Plasma levels of ghrelin, motilin and neuropeptide Y (NPY) were measured by enzyme-linked immunosorbent assay kits.RESULTS: AMT slowed the OCTT (109.2 ± 29.68 min vs 96.61 ± 23.9 min, P = 0.004) but did not affect liquid gastric emptying and had no effect on proximal gastric accommodation. AMT resulted in decreases in the visual analogue scale (VAS) for difficulty in drinking 600 and 800 mL of water (3.57 ± 0.94 vs 2.98 ± 0.85, 5.57 ± 0.82 vs 4.57 ± 0.98, P < 0.01 for both), although it had no significant effect on the VAS for difficulty in drinking 200 mL and 400 mL of water. AMT significantly increased the plasma ghrelin level (442.87 ± 176.79 pg/mL vs 526.87 ± 158.44 pg/mL, P = 0.04) and the neuropeptide-Y level (890.15 ± 131.46 pg/mL vs 965.64 ± 165.63 pg/mL, P = 0.03), whereas it had no effect on the MTL level. CONCLUSION: Low-dose AMT could slow OCTT, make the stomach less sensitive and increase the plasma levels of ghrelin and NPY. Thus, we recommend the use of low-dose AMT for functional gastrointestinal disorders.

Mass spectrometry-based serum peptide profiling in hepatocellular carcinoma with bone metastasis

AIM: To investigate the potential of serum peptides as a diagnostic tool for hepatocellular carcinoma (HCC) with bone metastasis.

Serum amyloid A and pairing formyl peptide receptor 2 are expressed in corneas and involved in inflammation-mediated neovascularization

AIM:To solidify the involvement of Saa-related pathway in corneal neovascularization(CorNV).The pathogenesis of inflammatory CorNV is not fully understood yet,and our previous study implicated that serum amyloid A(Saa)1(Saa1)and Saa3 were among the genes up-regulated upon CorNV induction in mice.METHODS:Microarray data obtained during our profiling project on CorNV were analyzed for the genes encoding the four SAA family members(Saa1-4),six reported SAA receptors(formyl peptide receptor 2,Tlr2,Tlr4,Cd36,Scarb1,P2rx7)and seven matrix metallopeptidases(Mmp)1a,1b,2,3,9,10,13reportedly to be expressed upon SAA pathway activation.The baseline expression or changes of interested genes were further confirmed in animals with CorNV using molecular or histological methods.CorNV was induced in Balb/c and C57BL/6 mice by placing either three interrupted 10-0 sutures or a 2 mm filter paper soaked with sodium hydroxide in the central area of the cornea.At desired time points,the corneas were harvested for histology examination or for extraction of mRNA and protein.The mRNA levels of Saa1,Saa3,Fpr2,Mmp2and Mmp3 in corneas were detected using quantitative reverse transcription-PCR,and SAA3 protein in tissues detected using immunohistochemistry or western blotting.RESULTS:Microarray data analysis revealed that Saa1,Saa3,Fpr2,Mmp2,Mmp3 messengers were readily detected in normal corneas and significantly upregulated upon CorNV induction.The changes of these five genes were confirmed with real-time PCR assay.Onthe contrary,other SAA members(Saa2,Saa4),other SAA receptors(Tlr2,Tlr4,Cd36,P2rx7,etc),or other Mmps(Mmp1a,Mmp1b,Mmp9,Mmp10,Mmp13)did not show consistent changes.Immunohistochemistry study and western blotting further confirmed the expression of SAA3 products in normal corneas as well as their upregulation in corneas with CorNV.CONCLUSION:SAA-FPR2 pathway composing genes were expressed in normal murine corneas and,upon inflammatory stimuli challenge to the corneas,their expressions were up-regulated,suggesting their roles in pathogenesis of CorNV.The potential usefulness of SAA-FPR2 targets in future management of CorNVrelated diseases deserves investigation.

Study on the regulation of brain-gut peptide by Shenling Baizhu San in functional diarrhea rats

Objective:To explore the therapeutic mechanism of Shenling Baizhu San (SLBZS) on functional diarrhea (FDr) by studying the brain-gut axis and related neuropeptides.Methods:Sixty male Wistar rats were randomly divided into the control group,model group,SLBZS-treated group and Montmorillonite Powder-treated group (MP-treated group) (n =15/group).Rats received gavage after the establishment of functional diarrhea.An equal volume of SLBZS solution and Montmorillonite Powder (MP) solution was administered to the SLBZS-treated group and MP-treated group,respectively,and an equal volume of distilled water was administered to the control group and the model group.The chemical components and targets related to SLBZS were identified from the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform (TCMSP) and Traditional Chinese Medicine Integrated Database (TCMID).The effective chemical components were screened based on oral bioavailability (OB) and drug like-index (DL),and their biological functions were analyzed by GlueGO.Based on this screening,the expression of Cholecystokinin (CCK) and Ghrelin in the hypothalamus of rats was detected by real-time PCR (RT-PCR) and western blotting.Results:In this study,72 effective components and 190 core targets of SLBZS were screened.SLBZS may regulate smooth muscle contraction,energy metabolism and other biological processes.The results of RT-PCR showed that in the model group,the expression of CCK mRNA (P =.001) and Ghrelin mRNA (P =.000) increased significantly.Compared with the model group,CCK mRNA (P =.007) and Ghrelin mRNA (P =.001) levels in SLBZS-treated rats were decreased significantly.The results of western blotting showed that in the model group,the protein expression of CCK (P =.001) and Ghrelin (P =.000) increased significantly.The protein levels of CCK (P =.001) and Ghrelin (P =.005) in the SLBZS-treated group were decreased significantly compared with the model group.Conclusion:SLBZS improved functional diarrhea by regulating the brain-gut axis.Changes in the expressions of brain-gut peptide,CCK and Ghrelin might explain the pathogenesis of functional diarrhea related to brain-gut peptide and gastrointestinal hormone.

Relationship between contents of plasma atrial natriuretic peptide and serum lipids of atherosclerosis in rabbits

Changes in plasma atrial natriuretic peptide(ANP)and serum lipids were observed us-ing dietetic atherosclerosis(AS)models.The results showed that plasma ANP level of the ASgroup was significantly higher than that of the control group(14.33±3.58μg/L vs 9.43±3.14μg/L).There was also a marked increase in serum Tch,TG,LDL-ch and VLDL-ch comparedwith the control group(P【0.01),suggesting that release of ANP increased with disturbance ofthe serum lipids and during AS formation,and that change in ANP was closely related to Tchand LDL-ch(P【0.05).Possible mechanisms causing these changes are also discussed.

Relationship of calcitonin gene-related peptide with disease progression and prognosis of patients with severe traumatic brain injury

Calcitonin gene-related peptide（CGRP） has been implicated in multiple functions across many bioprocesses; however, whether CGRP is associated with severe traumatic brain injury（TBI） remains poorly understood. In this study, 96 adult patients with TBI（enrolled from September 2015 to December 2016） were divided into a mild/moderate TBI group（36 males and 25 females, aged 38 ± 13 years） and severe TBI group（22 males and 13 females, aged 38 ± 11 years） according to Glasgow Coma Scale scores. In addition, 25 healthy individuals were selected as controls（15 males and 10 females, aged 39 ± 13 years）. Radioimmunoassay was used to detect serum levels of CGRP and endothelin-1 at admission and at 12, 24, 48, 72 hours, and 7 days after admission. CGRP levels were remarkably lower, but endothelin-1 levels were obviously higher in the severe TBI group compared with mild/moderate TBI and control groups. Levels of CGRP were remarkably lower, but endothelin-1 levels were obviously higher in deceased patients compared with patients who survived. Survival analysis and logistic regression showed that both CGRP and endothelin-1 levels were associated with patient mortality, with each serving as an independent risk factor for 6-month mortality of severe TBI patients. Moreover, TBI patients with lower serum CGRP levels had a higher risk of death. Thus, our retrospective analysis demonstrates the potential utility of CGRP as a new biomarker, monitoring method, and therapeutic target for TBI.

Effects of Pyridoxine on Selected Appetite Regulating Peptides mRNA Expression in Hypothalamic PVN/ARC Nuclei and Gastrointestinal Tract Tissues

An experiment was conducted to investigate the effect of dietary pyridoxine on the gene expression of appetite-regulating peptides in the hypothalamus and gastrointestinal tract of rabbits. Thirty-two rabbits were randomly divided into 2 treatments for 8 weeks (16 replicates/group and 1 rabbit/replicate). The treatments were fed a basal diet (control, measured pyridoxine content is 4.51 mg/kg) and the basal diet with a pyridoxine supplementation at 10 mg/kg (pyridoxine, measured pyridoxine content is 14.64 mg/kg). The results showed that dietary pyridoxine did not significantly alter the mRNA levels of neuropeptide Y, agouti related peptide, pro-opiomelanocortin and cocaine, amphetamine regulated transcript, peptide YY and cholecystokinin in arcuate nucleus, peptide YY in jejunum and ileum, and cholecystokinin in duodenum, jejunum and ileum (P > 0.05). Compared with the control, the mRNA levels of corticotropin-releasing hormone and melanocortin 4 receptor in paraventricular nuclei and peptide YY in duodenum were significantly decreased after pyridoxine treatment (P 0.05). In conclusion, the appetite genes of melanocortin 4 receptor and corticotropin-releasing hormone in paraventricular nuclei and peptide YY in duodenum are involved in the pyridoxine-caused hyperphagia.

血清C肽与糖化血红蛋白联合检验对糖尿病患者辅助诊断的价值

目的探讨血清C肽与糖化血红蛋白诊断糖尿病的价值。方法选取厦门大学附属第一医院杏林分院于2021年1月—2023年12月收治的200例疑似糖尿病患者为研究对象,均检测C肽与糖化血红蛋白水平,以糖耐量试验为金标准,分析两项指标联合的诊断价值。结果糖耐量试验结果显示,200例疑似患者中确诊糖尿病165例,非糖尿病35例;血清C肽联合糖化血红蛋白检查的检出率为83.50%,高于单一指标的72.50%、74.50%。联合诊断糖尿病的准确度、灵敏度、阴性预测值高于单一指标,差异有统计学意义(P均<0.05)。结论糖尿病诊断时,血清C肽联合糖化血红蛋白可发挥确切价值。

血清MMP-9、ProGRP及内皮素的水平与非小细胞肺癌分期的相关性分析

目的探究非小细胞肺癌患者中血清基质金属蛋白酶-9(MMP-9)、血清胃泌素释放肽前体(ProGRP)与肿瘤分期的相关性。方法选取非小细胞肺癌患者70例作为观察组,以同期健康体检者70例作为对照组,比较两组患者血清中MMP-9、ProGRP及内皮素水平,并采用ROC曲线分析上述指标的临床诊断价值。结果观察组患者MMP-9、ProGRP以及内皮素表达水平均显著高于对照组(P<0.05),MMP-9、ProGRP以及内皮素阳性表达率男性患者和Ⅲ、Ⅳ期患者显著高于女性患者和Ⅰ、Ⅱ期者,差异有统计学意义(P<0.05),MMP-9、ProGRP以及内皮素与肿瘤分期均具有显著相关性(P<0.05)。结论MMP-9、ProGRP以及内皮素均可作为非小细胞肺癌的检测指标,且其表达水平与肿瘤分期存在相关性,为临床诊断提供依据。

Circulating proteomic biomarkers for diagnosing sporadic amyotrophic lateral sclerosis:a cross-sectional study

Biomarke rs are required for the early detection,prognosis prediction,and monitoring of amyotrophic lateral sclerosis,a progressive disease.Proteomics is an unbiased and quantitative method that can be used to detect neurochemical signatures to aid in the identification of candidate biomarke rs.In this study,we used a label-free quantitative proteomics approach to screen for substantially differentially regulated proteins in ten patients with sporadic amyotrophic lateral scle rosis compared with five healthy controls.Su bstantial upregulation of serum proteins related to multiple functional clusters was observed in patients with spo radic amyotrophic lateral sclerosis.Potential biomarke rs were selected based on functionality and expression specificity.To validate the proteomics profiles,blood samples from an additional cohort comprising 100 patients with sporadic amyotrophic lateral sclerosis and 100 healthy controls were subjected to enzyme-linked immunosorbent assay.Eight substantially upregulated serum proteins in patients with spora dic amyotrophic lateral sclerosis were selected,of which the cathelicidin-related antimicrobial peptide demonstrated the best discriminative ability between patients with sporadic amyotrophic lateral sclerosis and healthy controls(area under the curve[AUC]=0.713,P<0.0001).To further enhance diagnostic accuracy,a multi-protein combined discriminant algorithm was developed incorporating five proteins(hemoglobin beta,cathelicidin-related antimicrobial peptide,talin-1,zyxin,and translationally-controlled tumor protein).The algo rithm achieved an AUC of 0.811 and a P-value of<0.0001,resulting in 79%sensitivity and 71%specificity for the diagnosis of sporadic amyotrophic lateral scle rosis.Subsequently,the ability of candidate biomarkers to discriminate between early-stage amyotrophic lateral sclerosis patients and controls,as well as patients with different disease severities,was examined.A two-protein panel comprising talin-1 and translationally-controlled tumor protein effectively distinguished early-stage amyotrophic lateral sclerosis patients from controls(AUC=0.766,P<0.0001).Moreove r,the expression of three proteins(FK506 binding protein 1A,cathelicidin-related antimicrobial peptide,and hemoglobin beta-1)was found to increase with disease progression.The proteomic signatures developed in this study may help facilitate early diagnosis and monitor the progression of sporadic amyotrophic lateral sclerosis when used in co mbination with curre nt clinical-based parameters.

渐进式减压应用于大骨瓣减压术中治疗重型颅脑损伤的效果及对BNP、t-PA和PAI-1水平的影响

目的:探讨渐进式减压应用于大骨瓣减压术中治疗重型颅脑损伤的效果及对血清脑钠肽(BNP)、组织型纤溶酶原激活物(t-PA)、纤溶酶原激活剂抑制物-1(PAI-1)水平的影响。方法:选取2020年2月—2023年2月安徽医科大学第一附属医院收治的98例重型颅脑损伤患者作为研究对象,按照随机数表法分为对照组和观察组,各49例。两组均给予大骨瓣减压术。对照组给予常规减压治疗,观察组给予渐进式减压治疗,比较两组血清相关指标、颅内压、意识水平及术后并发症。结果:术后1 d,两组BNP高于术前,PAI-1、t-PA水平低于术前,且观察组BNP、PAI-1、t-PA低于对照组,差异有统计学意义(P<0.05)。术后1 d、1周,观察组颅内压水平均低于对照组,差异有统计学意义(P<0.05)。术后2周,两组格拉斯哥昏迷量表(GCS)评分高于术前,且观察组高于对照组,差异有统计学意义(P<0.05)。观察组并发症发生率为6.12%,低于对照组的22.45%,差异有统计学意义(P<0.05)。结论:渐进式减压应用于大骨瓣减压术中治疗重型颅脑损伤患者可以有效降低术后BNP、PAI-1、t-PA水平,改善颅内压和意识水平,减少术后并发症的发生。

血清C肽与血糖检测结合检验诊断糖尿病的准确性分析

目的分析血清C肽与血糖检测结合检验诊断糖尿病的准确性。方法选取2021年5月—2022年5月福州市第二医院就诊的100例糖尿病患者,纳入到分析组中,另选取同时期就诊的107例健康体检者,纳入到对照组中。对其共同进行糖尿病诊断,分析血清C肽、血糖检测、联合诊断结果。结果分析组患者血清C肽低于对照组,空腹血糖、餐后2 h血糖、糖化血红蛋白水平均显著高于对照组,差异有统计学意义(P均<0.05)。经血清C肽检测,阳性102例,阴性105例,其中82例为糖尿病患者;糖化血红蛋白检测出阳性102例,阴性105例,其中80例为糖尿病患者;联合检测方式中阳性102例,阴性105例,其中100例为糖尿病患者。联合检测对糖尿病患者诊断特异度、灵敏度及准确度水平均显著高于单一检测方式,差异有统计学意义(P均<0.05)。结论血清C肽与血糖检测结合检验诊断糖尿病,利于诊断准确度及诊断效能的提升。

营养小肽对黄金鲫生长、血清生化和抗氧化能力的影响

为探讨营养小肽对黄金鲫生长、血清生化和抗氧化性能的影响。试验分为1个对照组和2个试验组,分别投喂基础饲料和添加2.0%营养小肽的饲料。结果显示:养殖52d和128d,体质量、体长、增重率和特定生长率试验组均大于对照组。养殖128d时,试验组与对照组有显著差异(0.01≤P <0.05)。试验组血清总蛋白、白蛋白和脂肪酶均高于对照组。比较养殖128d和52d,试验组总超氧化物歧化酶(T-SOD)活性提高了14.94%和1.50%,对照组降低了13.70%(P> 0.05)。试验组氧化氢酶(CAT)活力降低了8.77%和3.43%,对照组降低了11.86%(P> 0.05)。试验组谷胱甘肽过氧化物酶(GSH-PX)活力提高了33.94%和30.75%,对照组提高了25.33%(P> 0.05)。试验组总抗氧化能力(T-AOC)能力提高了12.50%和4.35%,对照组降低45.71%(P> 0.05)。试验组丙二醛(MDA)含量提高了45.19%和56.65%,对照组提高80.85%(P> 0.05)。试验组一氧化氮(NO)含量提高了126.38%和38.91%,对照组降低了11.25%(P <0.01)。营养小肽对养殖黄金鲫的生长有一定的促进作用,脂质代谢处于健康水平,具有一定的抗氧化性,可有效提高黄金鲫内源性抗氧化酶活力和抗氧化能力,同时增强机体维持自由基平衡的能力。

动态监测脑利尿钠肽、D-二聚体、血清白蛋白与球蛋白比值对慢性阻塞性肺疾病急性加重期患者预后的预测意义

目的探究血清脑利尿钠肽(BNP)、D-二聚体(D-D)及白蛋白与球蛋白比值(AGR)在预测慢性阻塞性肺疾病急性加重期(AECOPD)患者预后中的价值。方法选取2021年1月至2023年4月于安徽医科大学附属巢湖医院住院治疗的162例AECOPD患者为研究对象,根据其治疗1年内的预后情况将其分为预后不良组(64例)和预后良好组(98例),记录并分析两组一般临床资料,采用多因素logistic回归分析AECOPD患者预后不良的影响因素。结果预后不良组吸烟史占比高于预后良好组(P<0.05);两组入院第7天血清BNP、D-D水平低于第1天,AGR水平高于第1天(P<0.05);入院第1天,预后不良组BNP、D-D水平高于预后良好组,AGR水平低于预后良好组(P<0.05);多因素logistic回归分析结果显示,有吸烟史(OR=4.125,95%CI:1.632~10.428,P=0.003)、入院第1天血清AGR低(OR=0.008,95%CI:0.001~0.071,P<0.001)、BNP高(OR=1.097,95%CI:1.045~1.151,P<0.001)、D-D高(OR=46.669,95%CI:5.374~405.269,P<0.001)是预后不良的主要危险因素;Pearson相关性分析结果显示,入院第1天血清BNP(r=0.376,P<0.001)、D-D水平(r=0.351,P<0.001)与AECOPD患者预后不良呈正相关;入院第1天AGR(r=-0.296,P<0.001)与AECOPD患者预后不良呈负相关;ROC曲线显示,入院第1天血清BNP、D-D、AGR指标联合预测AECOPD患者预后不良的AUC高于各项指标单一预测(P<0.05)。结论动态监测血清BNP、D-D和AGR水平对于AECOPD患者预后的预测具有重要意义,入院初期的血清指标具有早期预测价值。

SYNTAX积分联合血清NT-pro BNP、CK-MB、cTnI水平对急性心肌梗死患者PCI术预后的评估价值

目的探讨SYNTAX积分联合血清N末端钠尿肽前体(NT-pro BNP)、肌酸激酶同工酶(CK-MB)、心肌钙蛋白(cTnI)水平评估急性心肌梗死(AMI)患者经皮冠状动脉介入治疗(PCI)术预后的价值。方法选取2020年1月—2022年11月我院85例行PCI术的AMI患者为研究对象,根据患者术后是否存在主要不良心脑血管事件(MACCE)分为预后良好组(n=63)和预后不良组(n=22),术前均行冠脉造影,采用SYNTAX积分评估患者冠脉变程度,住院期间常规测定患者血清NT-pro BNP、CK-MB、cTnI水平,术后随访半年。比较两组一般临床资料、SYNTAX积分及血清NT-pro BNP、CK-MB、cTnI水平,采用多因素Logistic回归分析法分析影响AMI患者PCI术预后的危险因素,采用受试者工作曲线分析SYNTAX积分联合血清NT-pro BNP、CK-MB、cTnI水平对AMI患者PCI术预后的评估价值。结果两组性别、年龄、BMI、合并高血压、糖尿病、血清TC、TG、HDL-C、LDL-C、Scr、LVEF、LVEDD比较,差异无统计学意义(P>0.05),Killip分级、病变支数分布、支架置入数、介入治疗时间、住院时间比较,差异均有统计学意义(P<0.05);预后不良组SYNTAX积分、血清NT-pro BNP、CK-MB、cTnI水平均显著高于预后良好组(P<0.05);多因素Logistic回归分析显示,病变支数、支架置入数、SYNTAX积分、血清NT-pro BNP、CK-MB、cTnI水平是影响AMI患者PCI术预后的危险因素(P<0.05);ROC曲线显示,SYNTAX积分、NT-pro BNP、CK-MB、cTnI单独及联合预测AMI患者PCI术预后的AUC分别为0.747、0.754、0.752、0.881、0.952。结论SYNTAX积分、血清NT-pro BNP、CK-MB、cTnI水平单独或联合检测均可有效预测AMI患者PCI术后MACCE的发生,联合检测预测效能显著提升。

补肾运脾方促矮小大鼠生长的效用机制研究

目的:观察补肾运脾方对矮小大鼠生长的影响,探讨其作用机制。方法:将雌性30只、雄性15只大鼠合笼过夜,雌鼠受孕后按随机数字表随机分为低蛋白饲料组与标准饲料组,所有孕鼠分娩后采用标准饲料喂养。仔鼠2周龄去除雌仔鼠,3周龄离乳。标准饲料组孕鼠分娩的新生仔鼠中按随机数字表随机方法选取10只雄鼠仔鼠标记为正常组,选矮小模型仔鼠50只分为模型组、西药组、低剂量组、中剂量组、高剂量组,每组10只。正常组、模型组给予无菌生理盐水灌胃,1 mL/100 g;低、中、高剂量组分别给予补肾运脾方药液0.76 g/mL、1.52 g/mL、3.04 g/mL灌胃,1 mL/100 g;西药组给予重组人生长激素注射液腹部皮下注射(0.84 IU/kg)。每天上午8:00给药,1次/d,连续3周。对比各组身长、体质量、骨密度(BMD)、骨矿盐(BMC)及血清Ⅰ型前胶原羧基端肽(PICP)、Ⅰ型胶原羧基吡啶交联肽(ICTP)、生长激素(GH)、胰岛素样生长因子-1(IGF-1)。结果:各组大鼠治疗后身长、体质量高于治疗前(P<0.05),低剂量组、高剂量组BMD高于模型组(P<0.05),正常组、西药组、中剂量组、高剂量组血清PICP含量低于模型组(P<0.05),中药3组血清PICP含量大于正常组(P<0.05),正常组、中药3组、西药组血清ICTP含量小于模型组(P<0.01),中药3组血清ICTP含量大于正常组(P<0.05);正常组、中药3组、西药组血清GH含量小于模型组(P<0.01),低剂量组、中剂量组血清GH含量大于西药组(P<0.05),低剂量组血清GH含量大于正常组(P<0.05);低剂量组、中剂量组血清IGF-1水平小于西药组(P<0.05)。结论:补肾运脾方可促进矮小大鼠身长、体质量增长,促进骨代谢,增加BMD,其效用机制为通过促进血清GH利用、提高血清IGF-1水平发挥促生长作用。

Mimotope peptide modified pompon mum-like magnetic microparticles for precise recognition,capture and biotransformation analysis of rituximab in biological fluids

Due to low immobilized ligand density,limited binding capacity,and severe interference from serum proteins,developing ideal peptide-based biomaterials for precise recognition and in vivo analysis of biopharmaceuticals remains a huge challenge.In this study,mimotope peptide modified pompon mum-like biomimetic magnetic microparticles(MMPs,3.8μm)that mimic the specific functionalities of CD20 on malignant B cells were developed for the first time.Benefit from the numerous ligand binding sites(Ni^(2+))on the pompon mum-like MMPs,these novel materials achieved≥10 times higher peptide ligand densities(>2300 mg/g)and antibody binding capacities(1380 mg/g)compared to previous reported biomaterials.Leveraging the high specificity of the mimotope peptide,rituximab can be precisely recognized and enriched from cell culture media or serum samples.We also established an LC-MS/MS method using the MMPs for tracking rituximab biotransformation in patient serum.Intriguingly,deamidation of Asn55 and Asn33,as well as oxidation of Met81 and Met34 were observed at the key complementarity determining regions of rituximab,which could potentially influence antibody function and require careful monitoring.Overall,these versatile biomimetic MMPs demonstrate superior recognition and enrichment capabilities for target antibodies,offering interesting possibilities for biotransformation analysis of biopharmaceuticals in patient serum.

探讨在糖尿病诊断中采用血清C肽以及糖化血红蛋白的效果

目的 探讨在糖尿病诊断中血清C肽以及糖化血红蛋白(Glycosylated Haemoglobin, HbA1c)的效果。方法 选取2022年1月—2023年5月联勤保障部队第910医院收治的96例糖尿病患者为糖尿病组,并选取接受体检的60名健康人员为对照组,均开展血清C肽与HbA1c检测,比较两组检测结果。结果 与对照组比较,糖尿病组血清C肽更低,HbA1c水平更高,差异有统计学意义(P均<0.05)。血清C肽联合HbA1c诊断糖尿病的准确率为87.18%,灵敏度为85.42%,特异度为90.00%。结论 糖尿病诊断中血清C肽以及HbA1c可取得较好的效果,同时可为糖尿病患者的病情评估提供参考价值。

血清C肽与糖化血红蛋白联合检验在糖尿病临床诊断中的效果及灵敏度评价

目的 探讨临床诊断糖尿病过程中血清C肽与糖化血红蛋白联合检验的灵敏度与效果。方法 选取2021年5月—2023年7月寿光市人民医院收治的52例疑似糖尿病患者为研究对象,均测定血清C肽及糖化血红蛋白,并以临床最终诊断结果为金标准,分析血清C肽、糖化血红蛋白单一及联合诊断价值。结果 血清C肽联合糖化血红蛋白检查在糖尿病患者中诊断准确度(82.69%)、灵敏度(83.78%)、特异度(80.00%)、阳性预测值(91.17%)及阴性预测值(66.67%)均高于单一血清C肽及糖化血红蛋白检查,差异有统计学意义(χ^(2)=5.396、7.361、6.093、8.562、6.141,P均<0.05)。结论 血清C肽、糖化血红蛋白用于糖尿病患者中具有较高检出率,且二者联合检查能提高诊断灵敏度、特异度及准确度,能用于指导临床诊疗。