SAPT:a synchrotron-based proton therapy facility in Shanghai

Because of its excellent dose distribution,proton therapy is becoming increasingly popular in the medical application of cancer treatment.A synchrotron-based proton therapy facility was designed and constructed in Shanghai.The synchrotron,beam delivery system,and other technical systems were commissioned and reached their expected performances.After a clinical trial of 47 patients was finished,the proton therapy facility obtained a registration certificate from the National Medical Products Administration.The characteristics of the accelerator and treatment systems are described in this article.

Mutual promotion of mitochondrial fi ssion and oxidative stress contributes to mitochondrial-DNAmediated infl ammation and epithelial-mesenchymal transition in paraquat-induced pulmonary fibrosis

BACKGROUND:Pulmonary fibrosis(PF)is one of the main causes of death in patients with paraquat(PQ)poisoning.This study aimed to evaluate the relationship between mitochondrial fi ssion and oxidative stress in PQ-induced epithelial-mesenchymal transition(EMT)and PF.METHODS:C57BL/6 mice and MLE-12 cells were exposed to PQ to construct a PF model in vivo and in vitro.Histological changes in the lungs were examined by hematoxylin and eosin(H&E)staining.Mitochondrial morphology was detected by MitoTracker®Deep Red FM or transmission electron microscopy(TEM).Western blotting and immunofluorescence were used to determine the expression of protein.The migration ability of the cells was detected by the cell scratch test.Mitochondrial DNA(mtDNA)levels were assessed by real-time polymerase chain reaction(PCR).Enzyme-linked immunosorbent assay(ELISA)was applied to detect cytokine levels.Superoxide dismutase(SOD)activity and the levels of glutathione(GSH)and malondialdehyde(MDA)were detected by chemichromatometry.RESULTS:PQ exposure caused EMT and PF in vivo and in vitro.PQ destroyed mitochondrial structure and enhanced the expression of dynamin-related protein 1(Drp1),which were accompanied by oxidative stress.Inhibiting mitochondrial fission using mitochondrial division inhibitor-1(Mdivi-1),a selective inhibitor of Drp1,attenuated PQ-induced EMT and oxidative damage.Treatment with N-acetyl-L-cysteine(NAC),an antioxidant,reduced Drp1 expression,attenuated mitochondrial structure damage and inhibited PQ-induced EMT and PF.Both Mdivi-1 and NAC treatment markedly suppressed mtDNA release,the expression of Toll-like receptor 9(TLR9)and phosphorylation(P)-NF-κB p65 as well as cytokines(interleukin 6[IL-6],interleukin-1β[IL-1β],and tumor necrosis factor-α[TNF-α])production.CONCLUSION:Mutual promotion of mitochondrial fission and oxidative stress contributes to EMT in PQ-induced PF,which is associated with the mtDNA/TLR9/NF-κB pathway.

Observation on ultrastructure and histopathology of cornea following femtosecond laser-assisted deep lamellar keratoplasty for acute corneal alkaline burns

AIM： To demonstrate the changes in ultrastructure and histopathology of the cornea in acute corneal alkaline burns after femtosecond laser-assisted deep lamellar keratoplasty.·METHODS： The New Zealand white rabbits treated with alkaline corneal burn were randomized into two groups,Group A（16 eyes） with femtosecond laser-assisted deep lamellar keratoplasty 24 h after burn and Group B（16 eyes）without keratoplasty as controls. All eyes were evaluated with transmission electron microscopy（TEM） at 1, 2, 3,and 4wk follow-up, then all corneas were tested by hematoxylin and eosin staining histology.· RESULTS： The corneal grafts in Group A were transparent, while those in Group B showed corneal stromal edema and loosely arranged collagen fibers. One week after treatment, TEM revealed the intercellular desmosomes in the epithelial layers and intact non-dissolving nuclei in Group A. At week 4, the center of the corneas in Group A was transparent with regularly arranged collagen fibers and fibroblasts in the stroma. In Group B, squamous cells were observed on the corneal surface and some epithelial cells were detached.· CONCLUSION： Femtosecond laser-assisted deep lamellar keratoplasty can suppress inflammatory responses, prevent toxic substance-induced injury to the corneal endothelium and inner tissues with quicker recovery and better visual outcomes.

Comparative analysis of different feeder layers with 3T3 fibroblasts for culturing rabbits limbal stem cells

AIM： To explore the possibility of human umbilical cord mesenchymal stem cells（h UCMSCs）, human umbilical vein endothelial cells（h UVECs）, human dental pulp stem cells（h DPSCs） and human periodontal ligament stem cells（h PDLSCs） serving as feeder cells in co-culture systems for the cultivation of limbal stem cells.METHODS： Different feeder layers were cultured in Dulbecco＇s modified Eagle＇s medium（DMEM）/F12 and were treated with mitomycin C. Rabbits limbal stem cells（LSCs） were co-cultured on h UCMSCs, h UVECs, h DPSCs, h PDLSCs and NIH-3T3, and then comparative analysis were made between each group to see their respective colony-forming efficiency（CFE） assay and immunofluorescence（IPO13,CK3/12）.RESULTS： The efficiency of the four type cells in supporting the LSCs morphology and its cellular differentiation was similar to that of NIH-3T3 fibroblasts as demonstrated by the immunostaining properties analysis, with each group exhibiting a similar strong expression pattern of IPO13, but lacking CK3 and CK12 expression in terms of immunostaining. But h UCMSCs, h DPSCs and h PDLSCs feeder layers were superior in promoting colony formation potential of cells when compared to h UVECs and feedercell-free culture.CONCLUSION： hUCMSCs, hDPSCs and hPDLSCs can be a suitable alternative to conventional mouse NIH-3T3 feeder cells, so that risk of zoonotic infection can be diminished.

某三甲医院达比加群酯潜在药物相互作用的回顾性研究

目的了解医疗机构的达比加群酯合并用药情况,为临床合理使用提供参考。方法采用回顾性研究方法,以达比加群酯药品说明书为基础,参考相关指南、文献及专业数据库,对某三甲综合医院2020年1月1日—2022年6月30日使用达比加群酯的住院患者潜在药物相互作用情况进行分析。结果共纳入1965份使用达比加群酯的病历,共发生736例(1088例次)潜在药物相互作用,发生率37.46%。涉及41种药物,主要为抗心律失常药、抗血小板药、抗凝药、非甾体抗炎药等,其中高风险药物相互作用共879例次,占80.79%。结论达比加群酯临床应用过程中发生潜在药物相互作用现象较普遍,临床医师应权衡利弊,优化药物治疗方案,药师应通过药学监护保障患者用药安全。

角膜生物力学分析仪评估SMILE与FS-LASIK术后角膜生物力学的变化

目的:利用角膜生物力学分析仪(Corvis ST)评估行飞秒激光小切口角膜基质透镜取出术(SMILE)和飞秒激光辅助的准分子激光原位角膜磨镶术(FS-LASIK)治疗的中度屈光不正患者术后角膜生物力学的变化特征。方法:前瞻性队列研究。选取2020-11/2021-11在宁夏眼科医院视光中心拟行角膜屈光手术的中度近视患者65例130眼,考虑双眼存在关联,双眼同时满足条件选右眼进行研究,其中SMILE组30眼,FS-LASIK组35眼。应用Corvis ST观察两组患者术前、术后1、3mo角膜生物力学参数综合半径(IR)、反向凹面半径(ICR)、形变幅度比值(DAR2)、硬度指数(SP-A1)、相关厚度-水平方向(ARTh)和最大压陷曲率半径(HC-Radius)的变化。结果:两组间患者术前,术后1、3mo生物力学参数比较均无差异(P>0.05)。各组患者术后1、3mo IR、ICR、DAR2均较术前明显增加,SP-A1、ARTh、HC-Radius均较术前明显降低(均P<0.05),术后1mo与术后3mo生物力学参数比较无差异(P>0.05)。两组患者术后3mo中央角膜厚度(CCT)与ARTh和SP-A1呈正相关(FS-LASIK组:r=0.727、0.819,SMLIE组:r=0.683、0.434,均P<0.05),与IR和ICR呈负相关(FS-LASIK组:r=-0.697、-0.622,SMLIE组:r=-0.447、-0.491,均P<0.05)。结论:对于中度近视患者,SMILE和FS-LASIK术后均可导致角膜生物力学稳定性降低,两种手术方式对生物力学的影响无明显差异,且在术后1mo时生物力学趋于稳定,术后CCT与生物力学参数ARTh、SP-A1、IR和ICR存在相关性。

Multidrug resistant organism infections in patients with COVID-19:risk factors and outcomes

Background:Coronavirus disease 2019(COVID-19)has now spread to most countries and regions of the world.Risk factors associated with multi-drug resistant organism(MDRO)infections in patients with COVID-19 have not been well studied yet.In the present study,we aimed to identify the risk factors associated with the MDRO infections and their impact on in-hospital mortality of COVID-19 patients.Methods:This retrospective cohort study was conducted between December 2019 and April 2020 at two tertiary hospitals in Wuhan,China.Data of cases were collected through electronic medical records system.This study was focused on cases with bacterial culture records.Risk factors and outcomes associated with MDRO infections were analyzed using logistic regression model.Results:Of the 2891 patients,370 patients have bacterial culture results,and MDROs were isolated in 38 patients.Respiratory tract infections(67.3%)were the most common hospital acquired infections.Variables independently associated with MDRO infections were dyspnea at admission(odds ratio(OR)4.74;95%confidence interval(CI)2.06-10.88;P<0.001),intensive care unit(ICU)admission(OR 5.02;95%CI 1.99-12.63;P<0.01),and invasive mechanical ventilation(OR 5.13;95%CI 2.15-12.27;P<0.001),adjusted for age and gender.MDROs infection was also a significant risk factor of death for the patients,adjusted for age,gender,severity of illness,ICU admission and mechanical ventilation(OR 1.12,95%CI:0.43-2.96,P=0.817).Conclusion:In our study,dyspnea at admission,ICU admission and invasive mechanical ventilation were associated with the presence of MDRO infections,and clinicians should be alert in MDRO infections in COVID-19 hospitalized patients.

青少年近视配戴角膜塑形镜前后眼轴长度的变化

目的:观察青少年近视配戴角膜塑形镜前后眼轴长度的变化。方法:选取2014-07/2017-10在西安交通大学第一附属医院眼视光中心配戴角膜塑形镜的8～16岁青少年近视102例为研究对象,观察其戴镜后1、2、3a眼轴变化情况,对研究对象的右眼数据进行统计分析。结果:青少年近视102例配戴角膜塑形镜3a后,眼轴增长0.42±0.37mm,低、中、高度近视组眼轴分别增长0.65±0.35、0.32±0.37、0.30±0.29mm,高度近视组(夜戴角膜塑形镜联合白天全矫框架眼镜)眼轴增长最慢;配戴时间与戴镜前屈光度、起始治疗年龄之间均存在交互作用(P<0.001);而配戴时间和性别之间无交互作用(F=0.292,P=0.695),男、女性戴镜后的眼轴变化速率未见差异。结论:低、中、高度近视青少年配戴角膜塑形镜后眼轴长度均有增长,高度近视青少年夜间配戴角膜塑形镜联合白天全矫框架眼镜眼轴增长速度慢于低中度近视者。

转录因子Yin Yang-1在头颈部肿瘤的研究进展

Yin Yang-1(YY1)是一种锌指蛋白,是GLI-Krüppel家族的成员,其可以作为转录抑制因子、激活因子或启动因子结合蛋白,指导并启动细胞和病毒基因的转录。因YY1的表达及功能与细胞周期的进展密切相关,最近被广泛应用于肿瘤生物学模型中。一些证据表明,YY1的表达和/或激活除了在正常的生物学过程中起调节作用外,还与肿瘤的发生有关。该文主要对YY1在转录调控、胚胎发育作用及其在头颈部肿瘤中的研究进展做一综述。

有晶状体眼后房型人工晶状体植入与FS-LASIK术后视觉质量分析

目的:比较有晶状体眼后房型人工晶状体(ICL)植入与FS-LASIK术治疗中高度近视术后的视觉质量。方法:前瞻性研究。选取2018-06/12分别行ICL植入术和FS-LASIK术的近视患者58例116眼(ICL组)和48例96眼(FS-LASIK组)。分析比较两组患者手术前后屈光度、视力和视觉质量情况。结果:术后3mo,ICL组患者球镜度数高于FS-LASIK组(0.19±0.22D vs 0.09±0.29D,P<0.05),但两组患者视力、柱镜度数和等效球镜度数无差异(均P>0.05);ICL组患者调制传递函数截止频率(MTF cut off)、客观散射指数(OSI)和OV9%均明显优于FS-LASIK组,而SR较FS-LASIK组降低,且与术前相比,ICL组患者MTF cut off明显增高,SR、OSI值降低,FS-LASIK组患者SR值降低(均P<0.05)。结论:ICL植入和FS-LASIK术均可有效改善患者视力和屈光度,对于中高度近视患者ICL植入术可提供相对较好的视觉质量。

Mechanism of immune tolerance induced by donor derived immature dendritic cells in rat high-risk corneal transplantation

·AIM: To study the role of immature dendritic cells (imDCs) on immune tolerance in rat penetrating keratoplasty (PKP) in high -risk eyes and to investigate the mechanism of immune hyporesponsiveness induced by donor-derived imDCs. ·METHODS: Seventy-five SD rats (recipient) and 39 Wistar rats (donor) were randomly divided into 3 groups: control, imDC and mature dendritic cell (mDC) group respectively. Using a model of orthotopic corneal transplantation in which allografts were placed in neovascularized high -risk eyes of recipient rat. Corneal neovascularization was induced by alkaline burn in the central cornea of recipient rat. Recipients in imDC group or mDC group were injected donor bone marrow-derived imDCs or mDCs of 1 ×10 6 respectively 1 week before corneal transplantation tail vein. Control rat received the same volume of PBS. In each group, 16 recipients were kept for determination of survival time and other 9 recipients were executed on day 3, 7 and 14 after transplantation. Cornea was harvested for hematoxylin eosin staining and acute rejection evaluation, Western blot was used to detect the expression level of Foxp3. ·RESULTS: The mean survival time of imDC group was significantly longer than that of control and mDC groups (all 【0.05). The expression level of Foxp3 on CD4 + CD25 + T cells of imDC group (2.24 ±0.18) was significantly higher than that in the control (1.68 ±0.09) and mDC groups (1.46±0.13) (all 【0.05).·CONCLUSION: Donor -derived imDC is an effective treatment in inducing immune hyporesponsiveness in rat PKP. The mechanism of immune tolerance induced by imDC might be inhibit T lymphocytes responsiveness by regulatory T cells. ·

新型中央孔型有晶状体眼后房型人工晶状体植入术后前房角的变化

目的:观察新型中央孔型有晶状体眼后房型人工晶状体(ICL)V4c植入术矫正高度近视术后前房角的变化。方法:前瞻性临床研究。选择高度近视患者150例300眼,均行ICL V4c植入术,记录术前及术后1d,1、3、6mo,1a的视力、眼压、拱高及前房角的变化。采用重复测量方差分析及LSD-t检验对数据进行分析。结果:术后1d,1、3、6mo,1a,裸眼视力(UCVA)恢复情况较术前显著提高(F=98.2,P<0.01);术前与术后各时间点鼻侧AOD500、AOD750、TISA500、TISA750、SSA比较均有差异(F=108.256、112.342、164.856、316.549、115.338,均P<0.01);术前与术后各时间点颞侧AOD500、AOD750、TISA500、TISA750、SSA比较均有差异(F=102.68、548.47、93.37、316.549、117.698,均P<0.01);两侧术后1d,1、3mo各房角参数逐渐降低,两两比较均有差异(P<0.05),术后3、6mo,1a各房角参数两两相比均无差异(P>0.05)。结论:ICL V4c植入术后1d,1、3、6mo,1a水平方向各房角参数较术前变小,3mo后基本趋于稳定状态。

TfR1 Extensively Regulates the Expression of Genes Associated with Ion Transport and Immunity

Transferrin receptor 1(TfR1),encoded by the TFRC gene,is the gatekeeper of cellular iron uptake for cells.A variety of molecular mechanisms are at work to tightly regulate TfR1 expression,and abnormal TfR1 expression has been associated with various diseases.In the current study,to determine the regulation pattern of TfR1,we cloned and overexpressed the human TFRC gene in HeLa cells.RNA-sequencing(RNA-seq)was used to analyze the global transcript levels in overexpressed(OE)and normal control(NC)samples.A total of 1669 differentially expressed genes(DEGs)were identified between OE and NC.Gene ontology(GO)analysis was carried out to explore the functions of the DEGs.It was found that multiple DEGs were associated with ion transport and immunity.Moreover,the regulatory network was constructed on basis of DEGs associated with ion transport and immunity,highlighting that TFRC was the node gene of the network.These results together suggested that precisely controlled TfR1 expression might be not only essential for iron homeostasis,but also globally important for cell physiology,including ion transport and immunity.

Assessment of Stroke Volume Variation Perioperatively by Using Arterial Pressure with Cardiac Output

Objective To observe the sensitivity of stroke volume variation(SVV) for assessing volume change during induction period of general anesthesia. Methods Patients who underwent orthopaedic surgery under general anesthesia and mechanical ventilation were divided into two groups randomly. Patients in the group Ⅰwere subjected to progressive central hypovolemia and correction of hypovolemia sequentially; patients in the Group Ⅱ were exposed to hypervolemia alone. Each step was implemented after 5 minutes when the hemodynamics was stable. SVV and cardiac index(CI) were recorded, and Pearson's product-moment correlation was used to analyze correlation between SVV and CI. Results Forty patients were included in this study, 20 cases in each group. For group Ⅰ patients, SVV was increased significantly along with blood volume reduction, and changes in CI were negatively correlated with changes in SVV(r=-0.605, P<0.01); SVV decreased significantly along with correction of blood volume; changes in CI were negatively correlated with changes in SVV(r=-0.651, P<0.01). For group Ⅱ patients, along with blood volume increase, SVV did not change significantly; changes in CI revealed no significant correlation with changes in SVV(r=0.067, P>0.05). Conclusion SVV is a useful indicator for hypovolemia, but not for hypervolemia.

无黏弹剂微切口ICL V4c植入术后拱高对角膜内皮细胞的影响

目的:评估无黏弹剂微切口中心孔型植入式透镜(ICL)V4c植入术后拱高对角膜内皮细胞的影响。方法:前瞻性非随机对照研究。选取2017-11/2018-02于我院行无黏弹剂微切口ICL V4c植入术的近视患者70例137眼,按照术后拱高的大小分为低拱高组(100μm<拱高≤250μm,37眼)、中拱高组(250μm<拱高≤750μm,69眼)、高拱高组(750μm<拱高≤900μm,31眼)。术后随访1a,观察角膜内皮细胞计数及前房参数的变化。结果:术后1wk,三组患者前房深度、前房容积、前房角角度均较术前减小(P<0.05)。三组患者手术前后不同时间的角膜内皮细胞计数无明显差异,术后1wk,3mo,1a低拱高组角膜内皮细胞丢失率分别约为1.2%、1.5%、1.7%,中拱高组分别约为0.5%、0.7%、1.0%,高拱高组分别约为1.1%、1.3%、1.4%。结论:无黏弹剂微切口ICL V4c植入术后早期拱高对角膜内皮细胞无明显影响。

Genetic diversity and temporal changes of an endemic cyprinid fish species, Ancherythroculter nigrocauda,from the upper reaches of Yangtze River

Small populations with low genetic diversity are prone to extinction. Knowledge on the genetic diversity and structure of small populations and their genetic response to anthropogenic effects are of critical importance for conservation management. In this study, samples of Ancherythroculter nigrocauda, an endemic cyprinid fish from the upper reaches of Yangtze River, were collected from five sites to analyze their genetic diversity and population structure using mitochondrial cytochrome b gene and 14 microsatellite loci. Haplotype diversity, nucleotide diversity, and expected heterozygosity indicated that the A. nigrocauda populations had low genetic diversity, and decreased heavily from 2001 to 2016. Significant genetic differentiation was found among different populations in the cyt b gene and SSR markers based on the genetic differentiation index (F ST), whereas no differentiation was found in 2001. Haplotype genealogy showed that eight out of 15 haplotypes were private to one population. The SSR STRUCTURE analysis showed that there were four genetic clusters in the A. nigrocauda samples, with each population forming a single cluster, except for the Chishui River (CSR) and Mudong River (MDR) populations, which formed a common cluster. Therefore, loss of genetic diversity and increased genetic differentiation were found in the A. nigrocauda populations, which could be attributed to dam construction, overfishing, and water pollution in the upper Yangtze River. It is therefore recommended that the government should ban fishing, control water pollution, increase river connectivity, and establish artificial breeding and stocking.

Claudin-7 gene knockout causes destruction of intestinal structure and animal death in mice

BACKGROUND Claudin-7, one of the important components of cellular tight junctions, is currently considered to be expressed abnormally in colorectal inflammation and colorectal cancer. However, there is currently no effective animal model to study its specific mechanism. Therefore, we constructed three lines of Claudin-7 knockout mice using the Cre/LoxP system.AIM To determine the function of the tumor suppressor gene Claudin-7 by generating three lines of Claudin-7 gene knockout mice.METHODS We crossed Claudin-7-floxed mice with CMV-Cre, vil1-Cre, and villin-CreERT2 transgenic mice, and the offspring were self-crossed to obtain conventional Claudin-7 knockout mice, conditional(intestinal specific) Claudin-7 knockout mice, and inducible conditional Claudin-7 knockout mice. Intraperitoneal injection of tamoxifen into the inducible conditional Claudin-7 knockout mice can induce the knockout of Claudin-7. PCR and agarose gel electrophoresis were used to identify mouse genotypes, and Western blot was used to confirm the knockout of Claudin-7. The mental state, body length, and survival time of these mice were observed. The dying mice were sacrificed, and hematoxylin-eosin(HE) staining and immunohistochemical staining were performed to observe changes in intestinal structure and proliferation markers.RESULTS We generated Claudin-7-floxed mice and three lines of Claudin-7 gene knockout mice using the Cre/LoxP system successfully. Conventional and intestinal specific Claudin-7 knockout mice were stunted and died during the perinatal period, and intestinal HE staining in these mice revealed mucosal gland structure disappearance and connective tissue hyperplasia with extensive inflammatory cell infiltration. The inducible conditional Claudin-7 knockout mice had a normal phenotype at birth, but after the induction with tamoxifen, they exhibited a dying state. Intestinal HE staining showed significant inflammatory cell infiltration, and atypical hyperplasia and adenoma were also observed. Intestinal immunohistochemistry analysis showed abnormal expression and distribution of Ki67, and the normal intestinal proliferation balance was disrupted. The intestinal crypt size in inducible conditional Claudin-7 knockout mice was increased compared with control mice(small intestine: 54.1 ± 2.96 vs 38.4 ± 1.63;large intestine: 44.7 ± 1.93 vs 27.4 ± 0.60; P < 0.001).CONCLUSION The knockout of Claudin-7 in vivo causes extensive inflammation, atypical hyperplasia, and adenoma in intestinal tissue as well as animal death in mice.Claudin-7 may act as a tumor suppressor gene in the development of colorectal cancer.

Lung adenocarcinoma metastasis to paranasal sinus:A case report

BACKGROUND Lung cancer is often metastasized to the brain,liver,kidneys,bone,bone marrow,and adrenal glands;however,metastasis of primary lung cancer to the paranasal sinuses is extremely rare.CASE SUMMARY In this paper,we present a case of metastatic tumors of the sinus secondary to lung adenocarcinoma.The patient was a 46-year-old woman who underwent surgical removal of lung carcinoma.Four months after the surgical removal of the lung tumor,the patient presented with epistaxis,and on investigation,the diagnosis was confirmed to be nasal sinus tumors due to metastasis of lung adenocarcinoma.CONCLUSION Thorough investigation of patients with epistaxis and a history of lung cancer is necessary to diagnose metastatic sinus tumors.We reviewed relevant literature and found that there are no characteristic clinical or radiologic features for metastatic sinus tumors;however,the diagnosis can be confirmed by histopathological examination of biopsied tumor sample.

Erratum to: TfRl Extensively Regulates the Expression of Genes Associated with Ion Transport and Immunity

It is hereby certified that there is no shared co-first authorship in this paper.Dr.Nan HUANG is the only first author of this article.

Significance of preoperative fibrinogen levels,neutrophils-to-lymphocyte ratio and its combined scores in evaluating the prognosis of postoperative patients with gastric cancer

Objective:To investigate the clinic significance of the combined detection of peripheral fibrinogen(Fbg)and neutrophils-to-lymphocyte ratio(NLR)(F-NLR)on the prognosis of postoperative gastric cancer patients.Methods:The clinical and pathological characteristics of 70 gastric cancer patients who were diagnosed by gastroscopy and surgically resected were collected,and the relationship between Fbg,NLR and F-NLR scores and pathological characteristics and prognosis of gastric cancer patients was retrospectively analyzed.Results:There were statistically significant differences in the levels of NLR in gastric cancer patients of different genders(P<0.05),while there were no significant differences in the levels of NLR and Fbg in other pathological factors such as age,T stage,lymph node metastasis and TNM stage(P>0.05).The f-NLR score of gastric cancer patients with different gender,T stage and TNM stage had statistical significance(P<0.05),but there was no statistical significance in the F-NLR score of gastric cancer patients with different age and whether lymph node metastasis(P>0.05).Univariate analysis showed that Fbg,NLR,F-NLR score,and TNM stage had an effect on recurrence and survival of patients with gastric cancer after surgery(P<0.05);multivariate COX regression analysis showed that only F-NLR score and TNM stage were independent risk factors for relapse and survival of patients with gastric cancer(P<0.05).Conclusion:The F-NLR scores about the combined detection of Fbg and NLR may guide clinical prediction of the prognosis of gastric cancer patients.