Furmonertinib re-challenge for epidermal growth factor receptormutant lung adenocarcinoma after osimertinib-induced interstitial lung disease:A case report

BACKGROUND Most non-small cell lung cancer patients have epidermal growth factor receptor(EGFR)activating mutations,such as exon 19 deletion and exon 21 replacement mutations.Osimertinib is a third-generation EGFR-tyrosine kinase inhibitors ap-proved for the treatment of lung cancer patients carrying EGFR activating mu-tations.Osimertinib-induced interstitial lung disease(ILD)is a rare and poten-tially fatal pulmonary toxic manifestation of drug therapy.At present,there is no international consensus on the risks and treatment of the osimertinib-induced ILD.CASE SUMMARY We report a case of a 56-year-old woman who was diagnosed with lung adenocar-cinoma with lung hilum,mediastinal lymph nodes and brain metastases(T4N3-M1c stage IVB).The patient received targeted treatment with osimertinib after radiotherapy and chemotherapy.But she developed ILD after osimertinib treat-ment.Following active symptomatic treatment and hormone treatment,the lung injury alleviated.The patient was retreated with furmonertinib combined with prednisone and did not experience ILD again.So far,she has survived for 14 months without disease progression.CONCLUSION Retreatment with furmonertinib under prednisone could be considered as an effective therapeutic option after risk-benefit assessment for EGFR-mutant lung adenocarcinoma patients.

Effects of interstitial cluster mobility on dislocation loops evolution under irradiation of austenitic steel

The evolution of dislocation loops in austenitic steels irradiated with Fe^(+)is investigated using cluster dynamics(CD)simulations by developing a CD model.The CD predictions are compared with experimental results in the literature.The number density and average diameter of the dislocation loops obtained from the CD simulations are in good agreement with the experimental data obtained from transmission electron microscopy(TEM)observations of Fe~+-irradiated Solution Annealed 304,Cold Worked 316,and HR3 austenitic steels in the literature.The CD simulation results demonstrate that the diffusion of in-cascade interstitial clusters plays a major role in the dislocation loop density and dislocation loop growth;in particular,for the HR3 austenitic steel,the CD model has verified the effect of temperature on the density and size of the dislocation loops.

Correlation analysis of interstitial maturity and prognosis of colorectal cancer:Meta-analysis

BACKGROUND To investigate the relationship between interstitial maturity and prognosis of colorectal cancer.AIM To examine the correlation between interstitial maturity and the prognosis of colorectal cancer.METHODS The paper database PubMed,EMBASE,Cochranelibrary,Springerlink,CNKI,and Wanfang database were searched until December 2023."tumor stroma maturity""desmoplastic stroma reaction""desmoplastic reaction""stroma reaction""degree of stroma reaction""stroma classification""stroma density""colorectal cancer""colon cancer""rectal cancer""prognosis"were searched for the search terms.Two system assessors independently screened the literature quality according to the inclusion exclusion criteria,Quality evaluation and data extraction were performed for the included literatures,and meta-analysis was performed for randomized control trials included at using Review Manager 5.2 software.RESULTS Finally,data of 9849 patients with colorectal cancer from 19 cosets in 15 literatures were included,including 4339 patients with mature type(control group),3048 patients with intermediate type(intermediate group)and 2456 patients with immature type(immature group).The results of meta-analysis showed:Relapse-free survival[hazard ratio(HR)=2.66,95%confidence interval(CI):2.30-3.08;P<0.00001],disease-free survival(HR=3.68,95%CI:2.33-5.81;P<0.00001)and overall survival(HR=1.70,95%CI:1.53-1.87;P<0.00001)were significantly lower than those in mature group(control group);relapse-free survival(HR=1.36,95%CI:1.17-1.59;P<0.0001)and disease-free survival rate(HR=1.85,95%CI:1.53-2.24;P<0.0001)was significantly lower than the mature group(control group).CONCLUSION There is the correlation between tumor interstitial maturity and survival prognosis of colorectal cancer,and different degrees of tumor interstitial maturity have a certain impact on the quality of life of colorectal cancer patients.

Clinical evolution of antisynthetase syndrome-associated interstitial lung disease after COVID-19 in a man with Klinefelter syndrome:A case report

BACKGROUND This study presents a case of rapidly developing respiratory failure due to antisynthetase syndrome(AS)following coronavirus disease 2019(COVID-19)in a 33-year-old man diagnosed with Klinefelter syndrome(KS).CASE SUMMARY A 33-year-old man with a diagnosis of KS was admitted to the Department of Pulmonary and Critical Care Medicine of a tertiary hospital in China for fever and shortness of breath 2 wk after the onset of COVID-19.Computed tomography of both lungs revealed diffuse multiple patchy heightened shadows in both lungs,accompanied by signs of partial bronchial inflation.Metagenomic next-generation sequencing of the bronchoalveolar lavage fluid suggested absence of pathogen.A biopsy specimen revealed organizing pneumonia with alveolar septal thickening.Additionally,extensive auto-antibody tests showed strong positivity for anti-SSA,anti-SSB,anti-Jo-1,and anti-Ro-52.Following multidisciplinary discussions,the patient received a final diagnosis of AS,leading to rapidly progressing respiratory failure.CONCLUSION This study underscores the clinical progression of AS-associated interstitial lung disease subsequent to viral infections such as COVID-19 in patients diagnosed with KS.

Microvascular alterations of the ocular surface and retina in connective tissue disease-related interstitial lung disease

AIM:To examine the disparities in macular retinal vascular density between individuals with connective tissue disease-related interstitial lung disease(CTD-ILD)and healthy controls(HCs)by optical coherence tomography angiography(OCTA)and to investigate the changes in microvascular density in abnormal eyes.METHODS:For a retrospective case-control study,a total of 16 patients(32 eyes)diagnosed with CTD-ILD were selected as the ILD group.The 16 healthy volunteers with 32 eyes,matched in terms of age and sex with the patients,were recruited as control group.The macular retina’s superficial retinal layer(SRL)and deep retinal layer(DRL)were examined and scanned using OCTA in each individual eye.The densities of retinal microvascular(MIR),macrovascular(MAR),and total microvascular(TMI)were calculated and compared.Changes in retinal vascular density in the macular region were analyzed using three different segmentation methods:central annuli segmentation method(C1-C6),hemispheric segmentation method[uperior right(SR),superior left(SL),inferior left(IL),and inferior right(IR)],and Early Treatment Diabetic Retinopathy Study(ETDRS)methods[superior(S),inferior(I),left(L),and right(R)].The data were analyzed using Version 9.0 of GraphPad prism and Pearson analysis.RESULTS:The OCTA data demonstrated a statistically significant difference(P<0.05)in macular retinal microvessel density between the two groups.Specifically,in the SRL and DRL analyses,the ILD group exhibited significantly lower surface density of MIR and TMI compared to the HCs group(P<0.05).Furthermore,using the hemispheric segmentation method,the ILD group showed notable reductions in SL,SR,and IL in the superficial retina(P<0.05),as well as marked decreases in SL and IR in the deep retina(P<0.05).Similarly,when employing the ETDRS method,the ILD group displayed substantial drops in superficial retinal S and I(P<0.05),along with notable reductions in deep retinal L,I,and R(P<0.05).In the central annuli segmentation method,the ILD group exhibited a significant decrease in the superficial retinal C2-4 region(P<0.05),whereas the deep retina showed a notable reduction in the C3-5 region(P<0.05).Additionally,there was an observed higher positive likelihood ratio in the superficial SR region and deep MIR.Furthermore,there was a negative correlation between conjunctival vascular density and both deep and superficial retinal TMI(P<0.001).CONCLUSION:Patients with CTD-ILD exhibits a significantly higher conjunctival vascular density compared to the HCs group.Conversely,their fundus retinal microvascular density is significantly lower.Furthermore,CTD-ILD patients display notably lower superficial and deep retinal vascular density in comparison to the HCs group.The inverse correlation between conjunctival vascular density and both superficial and deep retinal TMI suggests that detecting subtle changes in ocular microcirculation could potentially serve as an early diagnostic indicator for connective tissue diseases,thereby enhancing disease management.

This pain drives me crazy:Psychiatric symptoms in women with interstitial cystitis/bladder pain syndrome

BACKGROUND Interstitial cystitis/bladder pain syndrome(IC/BPS)is an at least 6-mo noninfectious bladder inflammation of unknown origin characterized by chronic suprapubic,abdominal,and/or pelvic pain.Although the term cystitis suggests an inflammatory or infectious origin,no definite cause has been identified.It occurs in both sexes,but women are twice as much affected.AIM To systematically review evidence of psychiatric/psychological changes in persons with IC/BPS.METHODS Hypothesizing that particular psychological characteristics could underpin IC/BPS,we investigated in three databases the presence of psychiatric symptoms and/or disorders and/or psychological characteristics in patients with IC/BPS using the following strategy:("interstitial cystitis"OR"bladder pain syndrome")AND("mood disorder"OR depressive OR antidepressant OR depression OR depressed OR hyperthymic OR mania OR manic OR rapid cyclasterisk OR dysthymiasterisk OR dysphoriasterisk).RESULTS On September 27,2023,the PubMed search produced 223 articles,CINAHL 62,and the combined PsycLIT/PsycARTICLES/PsycINFO/Psychology and Behavioral Sciences Collection search 36.Search on ClinicalTrials.gov produced 14 studies,of which none had available data.Eligible were peer-reviewed articles reporting psychiatric/psychological symptoms in patients with IC/BPS,i.e.63 articles spanning from 2000 to October 2023.These studies identified depression and anxiety problems in the IC/BPS population,along with sleep problems and the tendency to catastrophizing.CONCLUSION Psychotherapies targeting catastrophizing and life stress emotional awareness and expression reduced perceived pain in women with IC/BPS.Such concepts should be considered when implementing treatments aimed at reducing IC/BPS-related pain.

Severe acute kidney injury due to oxalate crystal induced severe interstitial nephritis:A case report

BACKGROUND Acute kidney injury(AKI)due to interstitial nephritis is a known condition primarily attributed to various medications.While medication-induced interstitial nephritis is common,occurrences due to non-pharmacological factors are rare.This report presents a case of severe AKI triggered by intratubular oxalate crystal deposition,leading to interstitial nephritis.The aim is to outline the case and its management,emphasizing the significance of recognizing uncommon causes of interstitial nephritis.CASE SUMMARY A 71-year-old female presented with stroke-like symptoms,including weakness,speech difficulties,and cognitive impairment.Chronic hypertension had been managed with hydrochlorothiazide(HCTZ)for over two decades.Upon admis-sion,severe hypokalemia and AKI were noted,prompting discontinuation of HCTZ and initiation of prednisolone for acute interstitial nephritis.Further investigations,including kidney biopsy,confirmed severe acute interstitial nephritis with oxalate crystal deposits as the underlying cause.Despite treatment,initial renal function showed minimal improvement.However,with prednisolone therapy and supportive measures,her condition gradually improved,high-lighting the importance of comprehensive management.CONCLUSION This case underscores the importance of a thorough diagnostic approach in identifying and addressing uncommon causes of interstitial nephritis.The occurrence of interstitial nephritis due to oxalate crystal deposition,especially without typical risk factors,emphasizes the need for vigilance in clinical practice.

Nodular Pulmonary Amyloidosis with Interstitial Lung Disease—Case Report and Literature Review

Amyloidosis is a rare spectrum of disease which involves deposition of misfolded extracellular proteins (amyloids) in various body organs leading to progressive organ dysfunction. Clinical presentation can be variable depending on the organ involved and type of protein. Amyloidosis can be classified based on quantity, type, and location of these proteins. Amyloid light-chain amyloidosis develops in the bone marrow, producing abnormal forms of light-chain proteins, which cannot be broken down. These proteins transform into amyloid fibrils and form amyloid deposits in different organs. Pulmonary amyloidosis is uncommonly diagnosed since it is rarely symptomatic. Diagnosis of pulmonary amyloidosis is usually made in the setting of systemic amyloidosis;however, it may present as localised pulmonary disease. Localized pulmonary Amyloidosis can present as nodular, cystic, or tracheobronchial amyloidosis. Depending on the degree of the interstitial involvement, it may affect alveolar gas exchange and cause respiratory symptoms. This is a case of a 47-year-old female with background history of interstitial lung disease presenting with progressive shortness of breath. Computed tomography scan revealed bilateral pulmonary nodules. The patient was referred to our thoracic surgery team with the suspicion of bronchogenic malignancy with metastasis. Diagnostic video assisted wedge resection was performed for this patient, and histology confirmed pulmonary amyloidosis of nodular type. Amyloid deposition simulates both inflammatory and neoplastic conditions. Definitive diagnosis requires biopsy confirmation therefore early detection and commencing the patient on appropriate treatment pathway may help in symptomatic relief and better outcome.

A Study on Literacy Enhancement:Assessing the Impact of Technology-Assisted Reading Instruction on English Language Learners

The purpose of this research is to assess the impact of technology-assisted reading instruction specifically on English language learners.The interview method was employed and the questionnaire served as the major data-gathering instrument.The respondents of the study were composed of learners.It was evident from the results that technology-assisted reading instruction provided significant benefits for improving reading comprehension through individualized and interesting learning experiences.In addition to promoting more engagement,this method enhances literacy,allowing students to engage in more meaningful conversations in English.Overall,technology-assisted reading instruction has been shown to help English language learners become more motivated and engaged by providing them with individualized,interactive learning opportunities that effectively accelerate their language development.

Effect of N-Acetylcysteine Combined with Lung Rehabilitation Therapy on Exercise Endurance and Quality of Life of Patients with Rheumatoid Arthritis-Related Interstitial Lung Disease

Objective:To explore the effect of N-acetylcysteine combined with lung rehabilitation therapy on exercise endurance and quality of life in patients with rheumatoid arthritis-related interstitial lung disease(RA-ILD).Methods:Fifty-six patients with RA-ILD admitted to Xijing Hospital from May 2022 to January 2024 were randomly divided into two groups:a non-rehabilitation group and a pulmonary rehabilitation group,with 28 patients in each group.Both groups received routine treatment.Additionally,the non-rehabilitation group received N-acetylcysteine treatment,while the lung rehabilitation group received lung rehabilitation treatment in addition to N-acetylcysteine.The improvement in exercise endurance and dyspnea between the two groups after treatment was compared and the quality of life of the patients was observed.Results:After treatment,the exercise endurance score in the lung rehabilitation group(335.67±45.29)was higher than that in the non-rehabilitation group(P<0.05).The dyspnea score in the lung rehabilitation group(0.72±0.16)was lower than that in the non-rehabilitation group(P<0.05).Additionally,FVC(3.18±0.58 L),FEV1(2.28±0.56 L),FEV1/FVC(69.69±5.56),and DLCO(60.53±5.92 mL/mmHg/min)were higher in the lung rehabilitation group compared to the non-rehabilitation group after treatment(P<0.05).Conclusion:Lung rehabilitation therapy combined with N-acetylcysteine treatment can effectively improve dyspnea symptoms,lung function,and exercise endurance in patients with RA-ILD.This approach helps to improve patient’s quality of life and is beneficial for their prognosis.

Correlation Analysis Between Changes of D-Dimer Level and Rheumatoid Arthritis Complicated with Interstitial Lung Disease

Objective:To explore the correlation between the change of D-dimer level and rheumatoid arthritis complicated with interstitial lung disease.Methods:From January 2022 to February 2024,20 rheumatoid arthritis patients complicated with interstitial lung disease(interstitial lung disease group),20 rheumatoid arthritis patients without interstitial lung disease(without interstitial lung disease group),and 20 healthy people(control group)in Xijing Hospital were selected for this study.The fasting venous blood of the three groups of subjects was collected and their D-dimer,C-reactive protein(CRP),rheumatoid factor(RF),and erythrocyte sedimentation rate(ESR)were detected.Subsequently,the correlation between each index and rheumatoid arthritis complicated with interstitial lung disease was analyzed.Results:The D-dimer level of the interstitial lung disease group was significantly higher than the other two groups(P<0.05).The D-dimer level of the group without interstitial lung disease was significantly higher than the control group(P<0.05).CRP levels in the interstitial lung disease group and the group without interstitial lung disease were significantly higher than those of the control group(P<0.05).The ESR and RF levels of the interstitial lung disease group were significantly higher than the other two groups(P<0.05).The levels of ESR and RF levels of the group without interstitial lung disease were significantly higher than the control group(P<0.05).Conclusion:D-dimer levels of rheumatoid arthritis patients are higher than those of healthy individuals,and those complicated with interstitial lung disease present even higher levels.This finding shows that there is a correlation between D-dimer levels and rheumatoid arthritis with interstitial lung disease,which may facilitate the evaluation and diagnosis of this disease.

In vitro Study of Interstitial Combination Chemotherapy in the Treatment of Glioma

Objective： To investigate the inhibitory effects of combination chemotherapy of Carboplatin （CBP）, Teniposide （Vm-26）, Methasquin （MTX）, and Nimodipine （NIM） on glioma, and to explore the sensitivity of glioma cells to different treatment regimens so as to provide some clues for clinical usage of interstitial combination chemotherapy. Methods： MTT assay and 3H-TdR incorporation assay were performed to evaluate the inhibitory effects upon the proliferation of glioma cells, and to compare the sen- sitivity of glioma cells to administration of CBP, Vm-26, MTX, and NIM with that of the administration of CBP＋NIM, Vm-26＋NIM, MTX＋NIM, CBP＋Vm-26＋MTX, or CBP＋Vm-26＋MTX＋NIM, respectively. Results： The inhibition rate of CBP＋Vm-26＋MTX＋NIM combination administration against glioma cells was 96.64%, higher than that of CBP＋NIM （69.03%）, Vm-26＋NIM （71.53%）, MTX＋NIM （52.75%）, CBP＋Vm-26＋MTX （78.59%） （P〈0.01）, and the dosage of CBP, Vm-26, and MTX was declined to 1/10- 1/100 that of respective use of CBP, Vm-26, and MTX. Conclusion： The curative effect of combination administration of CBP, Vm-26, MTX, and NIM was much better than that of respective administration, suggesting a higher inhibition rate and a lower dosage use.

EFFECT OF INTERSTITIAL IMPURITIES ON THE PHASETRANSFORMATION OF Ti-Al ALLOYS

应用固体与分子经验电子理论的平均晶胞和平均原子模型分析计算了间隙杂质对Ti-Al合金价电子结构和相变的影响。同时根据该理论的键能公式计算了间隙杂质影响下的键能、熔点和液相线的变化。据此解释了Ti-Al合金相变目前尚有争议的主要实验结果。表明，间隙杂质提高了合金元素的原子杂阶，引起键结构呈严重的各向异性，阻碍了β→α相转变，导致中间成分相变的复杂性。间隙杂质也降低了熔点及高温液相线，采用近似处理由该理论可较好地计算其平均降低程度。

Mechanism prediction of Astragalus mongholicus Bunge and Angelica sinensis Diels in treating interstitial lung disease based on network pharmacology and molecular docking

Objective:To investigate the mechanism by which Astragalus mongholicus Bunge(AM),and Angelica sinensis Diels(AS)act in interstitial lung disease(ILD)based on computational prediction.Methods:We screened the ingredients of AM and AS in PubMed,the Web of Science,China National Knowledge Infrastructure(CNKI)Databases,etc.Then obtained the potential effective components.By sharing the same molecular with ILD,we got the possible target genes for ILD treatment and constructed components–targets–disease network with Cytoscape software.The CTD(Comparative Toxicogenomics Database)database was used for GO and KEGG enrichment analysis of these target genes.Results:59 active ingredients that can be druggable were chosen from AM,67 active ingredients were chosen from AS.77 overlapping target genes for AM and ILD and 36 overlapping target genes for AS and ILD were acquired.The hub targets of AM were PTGS2,PTGS1,CDK2,MAOA,ESR1,TOP2A,GSK3B,ESR2,PPARG,NOS2,The hub targets of AS were PTGS2,GABRA1,PTGS1,CHRM1,SLC6A2,ADRA1B,ADRAIA,ADRB2,CHRM3,GABRA2,CHRM2.Quercetin,kaempferol,daidzein,pavilion,7-Hydroxycoumarin,and 5-Hydroxycoumarin were the main active ingredients which have more effective targets.Prediction of the protein-protein interaction network showed PTGS2,GSK3B,PPARG,etc.,were the important predicted targets.The enriched KEGG pathways,including the Immune System,Metabolism of lipids and lipoproteins,Cytokine Signaling in the Immune system,Generic Transcription Pathway,The interleukin pathway,Metabolism of proteins,PI3K-Akt signaling pathway,Metabolic pathways,Innate Immune System,Neuroactive ligand-receptor interaction,Metabolism,GPCR downstream signaling,Amine ligand-binding receptors,Class A/1,Calcium signaling pathway.Molecular docking showed that quercetin,kaempferol,daidzein,pavilion,7-Hydroxycoumarin,5-Hydroxycoumarin had good binding activities with PTGS2 and GSK3B,which mainly mediated PI3K/Akt and other important signaling pathways in the pathogenesis of ILD.Conclusion:The components in AS and AM share some common targets,such as PTGS2.AM and AS may ameliorate ILD through the PI3K-Akt signaling pathway which is mediated by GSK3B.PTGS2,PPARG may also be vital target genes in the treatment of ILD with AM and AS.

Interstitial cells of Cajal, the Maestro in health and disease

Interstitial cells of Cajal (ICC) are important players in the symphony of gut motility. They have a very signif icant physiological role orchestrating the normal peristaltic activity of the digestive system. They are the pacemaker cells in gastrointestinal (GI) muscles. Absence, reduction in number or altered integrity of the ICC network may have a dramatic effect on GI system motility. More understanding of ICC physiology will foster advances in physiology of gut motility which will help in a future breakthrough in the pharmacological interventions to restore normal motor function of GI tract. This mini review describes what is known about the physiologic function and role of ICCs in GI system motility and in a variety of GI system motility disorders.

Jianpi Qingchang decoction regulates intestinal motility of dextran sulfate sodium-induced colitis through reducing autophagy of interstitial cells of Cajal

AIM To investigate the underlying effect of Jianpi Qingchang decoction(JQD) regulating intestinal motility of dextran sulfate sodium(DSS)-induced colitis in mice. METHODS C57BL/6 mice were randomly divided into four groups: the control group, the DSS group, the JQD group, and the 5-aminosalicylic acid group. Except for the control group, colitis was induced in other groups by giving distilled water containing 5% DSS. Seven days after modeling, the mice were administered corresponding drugs intragastrically. The mice were sacrificed on the 15^(th) day. The disease activity index, macroscopic and histopathologic lesions, and ultrastructure of colon interstitial cells of Cajal(ICC) were observed. The levels of tumor necrosis factor-alpha(TNF-α), interleukin(IL)-1β, IL-10 and interferon gamma(IFN-γ), the expression of nuclear factor-kappa B(NF-κB) p65, c-kit, microtubule-associated protein 1 light chain 3(LC3-Ⅱ) and Beclin-l m RNA, and the colonic smooth muscle tension were assessed. RESULTS Acute inflammation occurred in the mice administered DSS. Compared with the control group, the levels of IL-1β, TNF-α, IL-10 and IFN-γ, the expression of LC3-Ⅱ, Beclin-1 and NF-κB p65 m RNA, and the contractile frequency increased(P < 0.05), the expression of c-kit m RNA and the colonic smooth muscle contractile amplitude decreased in the DSS group(P < 0.05). Compared with the DSS group, the levels of IL-10 and IFN-γ, the expression of c-kit m RNA, and the colonic smooth muscle contractile amplitude increased(P < 0.05), the levels of TNF-α and IL-1β, the expression of LC3-Ⅱ, Beclin-1 and NF-κB p65 m RNA, and the contractile frequency decreased in the JQD group(P < 0.05).CONCLUSION JQD can regulate the intestinal motility of DSS-induced colitis in mice through suppressing intestinal inflammatory cascade reaction, reducing autophagy of ICC, and regulating the network path of ICC/smooth muscle cells.

Effect of alprostadil combined with Diammonium glycyrrhizinate on renal interstitial fibrosis in SD rats

Objective:To observe effect of alprostadil combined with Diammonium glycyrrhizinate on renal interstitial fibrosis in SD rate.Methods:A total of 75 SD rate were randomly divided into A,B,C,D,E groups with 15 in each group.Rats in group A served as the control group received just only but tissue separation without modeling operation,while model of unilateral ureteral obstruction(UUO) was established in B,C,D,E groups.Rats in A,B group were given saline lavage placebo treatment,while rats in C,D,E groups were given dianunonium glycyrrhizinate and alprostadil injection.Five rats were sacrificed 1,2,3 weeks after modeling,serum creatinine level of femoral venous blood was determined.Transforming growth factor- β1(TCF- β1) and concentration of connective tissue growth factor(CTGF) were also detected by using ELISA.Line renal interstitial tissue was taken after HE staining,renal interstitial TGF- β1 and CTGF expression were detected by using immunohistochemical method.Results:Serum creatinine levels of B,C,D,E group at different time points in were significantly higher than that of group A(P<0.05);serum creatinine levels in group B were significantly higher than that of C,D,E group at each time point(P<0.05).Serum creatinine level of Croup E was significantly lower than C,D group after 2,3 weeks(P<0.05).Rate in A group at each time point showed no significant changes in TGF- β1 and CREA concentration in serum and kidney tissues(P>0.05);while serum and kidney tissue TGF- β1,concentration of CREA.expression of rats in B,C,D,E groups showed a gradual increasing trend over time.TCF- β1 and CREF of Group B in serum and kidney tissues at each time point were significantly higher than that of the other groups(P<0.05).TCF- β1 and CREF of Group E in serum and kidney tissues at each time point were significantly lower than that of B,C,D group at all time points in serum and kidney tissues(P<0.05).Conclusions:Alprostadil combined with diammonium glycyrrhizinate can significantly lower the expression of TGF- β1 and CTGF in serum and tissues of SD rat with renal interstitial fibrosis,thus inhibit rat renal interstitial fibrosis process.It has synergy protective effect.

Differential changes in intrinsic innervation and interstitial cells of Cajal in small bowel atresia in newborns

AIM: To investigate morphological changes of the enteric nervous system (ENS) and the interstitial cells of Cajal (ICCs) in small bowel atresia.METHODS: Resected small bowel specimens from affected patients (n = 7) were divided into three parts (proximal, atretic, distal). Standard histology and enzyme immunohistochemistry anti-S100, anti-protein gene product (PGP) 9.5, anti-neurofilament (NF), antic-kit-receptor (CD117) was carried out on conventional paraffin sections of the proximal and distal part. RESULTS: The neuronal and glial markers (PGP 9.5, NF, S-100) were expressed in hypertrophied ganglia and nerve fibres within the myenteric and submucosal plexuses. Furthermore, the submucous plexus contained typical giant ganglia. The innervation pattern of the proximal bowel resembled intestinal neuronal dysplasia. The density of myenteric ICCs was clearly reduced in the proximal bowel, whereas a moderate number of muscular ICCs were found. The anti-CD117 immunore- action revealed additional numerous mast cells. The distal bowel demonstrated normal morphology and density of the ENS, the ICCs and the mast cells.CONCLUSION: The proximal and distal bowel in small bowel atresia revealed clear changes in morphology and density of the ENS and ICCs.

Involvement of interstitial cells of Cajal in experimental severe acute pancreatitis in rats

AIM:To observe the changes in interstitial cells of Cajal(ICC) in rats with experimental severe acute pancreatitis(SAP).METHODS:A total of twenty-four SD rats were randomly divided into two groups(n = 12),namely the sham(S) group and the SAP group;the SAP rat model was established by retrograde injection of 5% sodium taurocholate(1.0 mL/kg) into the pancreatic duct.Twenty-four hours later intestinal motility was assessed by testing small intestinal propulsion rate,and then the rats were sacrificed.The pancreas and jejunum were resected and underwent routine pathologic examination.Immunohistochemical staining was used to detect c-kit-positive cells in the jejunum.Expression of c-kit mRNA was detected by real-time polymerase chain reaction,and the expression of c-kit protein was evaluated by Western blotting.Ultrastructure of ICC was evaluated by transmission electron microscopy.RESULTS:There was bleeding,necrosis and a largeamount of inflammatory cell infiltration in pancreatic tissue in the SAP group,while in jejunal tissue we observed a markedly denuded mucosal layer,loss of villous tissue and a slightly dilated muscular layer.The small intestinal propulsion rate was 68.66% ± 2.66% in the S group and 41.55% ± 3.85% in the SAP group.Compared with the S group,the rate of the SAP group decreased sharply.The density of c-kit-positive cells in the SAP group was significantly lower than in the S group;the respective mean densities were 88.47 ± 10.49 in the S group and 56.11 ± 7.09 in the SAP group.The levels of c-kit protein and mRNA were 0.36 ± 0.04 and 1.29 ± 0.91 in the SAP group,respectively,which were significantly lower than those in the S group(0.53 ± 0.06,0.64 ± 0.33,respectively).In the SAP group,ICC profiles showed the same change tendency,such as vacuolation of mitochondria,irregular vacuoles and loosened desmosome-like junctions.CONCLUSION:Decreased c-kit-positive cells and ultrastructural changes in ICC resulting from blockade of the c-kit signaling pathway are involved in the intestinal dysmotility associated with SAP.

350例上颌前磨牙Interstitial结节发生率的调查

上颌第一、第二前磨牙咬面上，颊侧副沟与横副沟间边缘嵴肥厚呈结节状称Interstitial结节。作者对中、日两所医科大学生Interstitial结节的发生情况作了调查，结果如下：（1）上颌第一前磨牙Interstitial结节发生率在中日两组大学生中无差异，上颌第二前磨牙日方组发生率高于中方组；（2）Interstitial结节在上颌第一前磨牙发生率显著高于上颌第二前磨牙；（3）单侧发生多于双侧；（4）上颌第一前磨牙Interstitial结节在面近中的发生率显著大于远中；（5）上颌第二前磨牙中方组近远中发生率无差异，日方组近中发生率高于远中。