Objective A novel compound based on near-infrared fluorescence(NIRF)probe was prepared to achieve dynamic monitoring of an inflammatory brain edema model in mice and real-time evaluation of therapeutic effects through in vivo imaging.Methods The NIRF probe IR-783 was chemically linked with clinical brain edema therapeutic drug furosemide(FSM)to obtain the new compound,IR-783-FSM.The ultraviolet fluorescence properties of the compound were evaluated using an ultraviolet spectrophotometer.The uptake of the compound by mouse macrophage cells RAW 264.7 was detected with in vitro cellular experiments.Its cytotoxicity was evaluated through CCK8 assays.A brain edema model was established in BALB/c mice via intraperitoneal injection of lipopolysaccharide(LPS),confirmed by HE staining and dry-wet weight methods for brain tissues.The mice in the brain edema model were divided into control group,IR-783,and IR-783-FSM treatment groups,receiving intraperitoneal injections of PBS,IR-783,and IR-783-FSM,respectively.Real-time in vivo fluorescence imaging was then performed.The mice in each group were euthanized after 10 hours.Ex vivo brain imaging and dry-wet weight measurements were performed to observe the NIRF imaging characteristics and therapeutic effects of IR-783-FSM on brain edema model.Results The newly synthesized compound,IR-783-FSM,retained the excellent near-infrared fluorescence characteristics of IR-783.It could target mouse macrophages with an IC50 of 48.82 μmol/L.A brain edema model could be successfully constructed with intraperitoneal injection of LPS,with significantly higher brain tissue water content compared to the control group(P＜0.01).In vivo imaging showed that IR-783-FSM had a significantly stronger fluorescence signal in the brain edema model than IR-783.Compared to the control group,the brain water content was significantly reduced in the 2,5,and 8 mmol/L IR-783-FSM treatment groups(P＜0.01).Conclusion The newly synthesized NIRF probe IR-783-FSM facilitates dynamic monitoring of brain edema and real-time evaluation of therapeutic effects.

Necroptosis is a regulated process of programmed cell death independent of aspartic acid-specific cysteine protease,which can induce inflammation.Studies have shown that necroptosis is closely related to the progression and prognosis of pancreatic disease and plays an important two-way regulatory role in its progression.Related necroptosis inhibitors and inducers are expected to be used in the treatment of pancreatic disease.We herein review the mechanism of necroptosis and its role in the progression of pancreatic disease to provide a new understanding of the pathogenesis and treatment of pancreatic diseases and offer a theoretical basis for the research and development of targeted drugs.

Objective To explore the effect of temperature on the risk of hand-foot-and-mouth disease (HFMD) and population susceptibility. Methods The data of HFMD cases in Chengdu from January 1, 2016 to October 31, 2022 were collected, and local meteorological data during the same period were also collected. Distributional lag nonlinear models were developed. The relative risk (RR) of morbidity at different temperatures and different lags was calculated. Differences in the relative risk levels of different populations were analyzed and compared. Results A total of 263 776 cases of HFDM were reported in Chengdu during the study period. The distribution of HFMD was periodic. For the overall population, the short-term average temperature and RR showed a ^“U^”-shaped relationship. When the lag time was 0-7 days, the cumulative RR was 1.59 (95%CI: 1.18-2.14) at the average temperature of -0.5℃ and 2.16 (95%CI: 1.60-2.91) at the average temperature of 34.5℃. The RR values under high and low temperatures decreased with increasing lag period. When the lag time was extended, the average temperature and RR showed an inverted ^“U^”-shaped relationship, with higher RR at moderate temperatures and increasing as the lag period increased. The results of the subgroups showed that the RR of onset among scattered children was higher at high and low temperatures. Conclusion The risk effect of temperature on the onset of HFMD in different populations is variable and changes with the lag period, and the prevention and control measures should be adjusted in a timely and targeted manner.

The ideological and political content of the laboratory animal science degree course with the basic task of "cultivating morality and cultivating people" is organically integrated into the teaching system of laboratory animal science. It can have a subtle influence on students' thoughts and behaviors. Combined with the curriculum design and professional characteristics of laboratory animal science, this article discussed the ideological and political elements contained in this course, proposed the forms and methods of integrating ideological and political elements into the curriculum design in each chapter. Additionally, the typical cases and characteristic practices of the organic connection of ideological and political education in the teaching system of laboratory animal science were summarized. Practice has proved that integrating the ideological and political elements into the teaching system of laboratory animal science can enhance teacher's awareness and ability of politics, thus effectively improving the compre-hensive quality of students and enhancing the effectiveness of ideological and political education in laboratory animal science.

Objective:To study the patterns of tocilizumab (TCZ) use, its efficacy and safety in patients with rheumatoid arthritis (RA) in routine clinical practice.Methods:A total of 407 patients with RA were enrolled from 23 centers and treated with TCZ within 8 weeks prior to the enrollment visit, and were followed for 6-month. The patterns of TCZ treatment at 6 months, the effectiveness and safety outcomes were recorded. Statistical analysis was performed using SAS version 9.4.Results:A total of 396 patients were included for analysis, in which 330 (83.3%) patients received TCZ combined with conventional synthetic disease-modifying antirheumatic drugs (csDMARDs), and 16.7%(66/396) received TCZ monotherapy. At baseline, TCZ was initiated in 56.6%(224/396) and 9.6%(38/396) of patients after failure of DMARDs and other biological agents (bDMARDs) respectively. During the 6-month follow-up period, the mean frequency of TCZ administration was (3.7±1.6), the mean TCZ dosage was (7.4±1.2) mg/kg, and the mean interval between doses was (40±13) days. 120(25.8%) patients were on TCZ treatment at the end of the study. Improvements in disease activity, systemic symptoms and patient report outcomes were observed at the end of the study. 22.7%(90/396) patients experienced at least one treatment related adverse event, and 8 patients experienced at least one serious adverse event.Conclusion:This study demonstrates that TCZ treatment is effective in patients with RA when being treated for 6 months with an acceptable safety profile. The duration of TCZ treatment needs to be extended.

Objective:To compare the expression levels of absent in melanoma 2 (AIM2) inflammasome pathways in rheumatoid arthritis (RA) and osteoarthritis (OA) synovial specimens.Methods:Synovial tissue samples were collected from 41 RA and 26 OA patients, respectively. Horseradish peroxidase immunohi stochemical staining was used to detect AIM2 inflammasome pathway-related proteins, including AIM2, apoptosis-associated speck-like protein containing a CARD(ASC), caspase-1, and interleukin-1 (IL-1β). A semi-quantitative score (H-score) was performed according to the degree of positiveness. Correlation analysis between H-score results and clinical indicators of erythrocyte sedimentation tate (ESR) and C-reactive protein (CRP) were performed. The H score between RA and OA was analyzed by t test and Spearman correlation analysis were utilized for correlation analysis between H score and ESR and CRP.Results:The H scores of AIM2 protein in RA synovial tissues was (132±7) and (54±8) in OA synovial tissues ( t=7.42, P<0.01). The H scores of ASC protein in RA synovial tissues was (107±9) and (74±6) in OA synovial tissues ( t=2.36, P<0.05). The H scores of caspase-1 protein in RA synovial tissues was (99±5) and (74±10) in OA synovial tissues ( t=2.15, P<0.05). The H scores of IL-1β protein in RA synovial tissues was (118±11) and (76±7) in OA synovial tissues ( t=3.30, P<0.05) . In the correlation analysis, AIM2 was positively correlated with ESR [ r=0.74, P<0.01, 95% CI(0.38, 0.9)], and ASC was positively correlated with ESR [ r=0.5, P<0.05, 95% CI(0.16, 0.74)], IL-1β was positively correlated with ESR [ r=0.62, P<0.05, 95% CI (0.31, 0.81)], and the difference was statistically significant ( P<0.05). At the same time, AIM2 was positively correlated with CRP [ r=0.65, P<0.05, 95% CI(0.25, 0.86)]; ACS was positively correlated with CRP [ r=0.42, P<0.05, 95% CI(0.05, 0.69)]. IL-1β was positively correlated with C-reactive Protein [ r=0.41, P<0.05, 95% CI(0.05, 0.67)] and positively correlated with C-reactive protein, and the difference was statistically significant ( P<0.05). Conclusion::The expression of AIM2 inflammasome pathway-related proteins in RA synovium, including AIM2, ASC, caspase-1, and IL-1β, is higher than that of OA and are positively correlated with disease activity. Activation of AIM2 inflammasome pathway may be associated with the pathogenesis of RA disease activity.

The accurate position of the center of rotation (COR) is a key factor to ensure the quality of computed tomography (CT) reconstructed images. The classic cross-correlation matching algorithm can not satisfy the requirements of high-quality CT imaging when the projection angle is 0 and 180°, and thus needs to be improved and innovated. In this study, considering the symmetric characteristic of the 0° and flipped 180° projection data in sinogram, a novel COR correction algorithm based on the translation and match of the 0° and 180° projection data was proposed. The OTSU method was applied to reduce noise on the background, and the minimum offset of COR was quantified using the -norm, and then a precise COR was obtained for the image correction and reconstruction. The Sheep-Logan simulation model with random gradients and Gaussian noise and the real male SD rats samples which contained the heterogenous tooth image and the homogenous liver image, were adopted to verify the performance of the new algorithm and the cross-correlation matching algorithm. The results show that the proposed algorithm has better robustness and higher accuracy of the correction (when the sampled data is from 10% to 50% of the full projection data, the COR value can still be measured accurately using the proposed algorithm) with less computational burden compared with the cross-correlation matching algorithm, and it is able to significantly improve the quality of the reconstructed images.

Prostate cancer is one of the most common malignant tumors in men and related studies have achieved great breakthrough in recent years.But because of the lack of effective in vivo animal models, the process to translate basic research into clinical application has been severely hampered.Patient derived prostate tumor xenograft ( PDPTX) model is an ideal animal model in which freshly isolated tumor tissues from patients were inoculated into immunodeficient mice.This model can duplicate the heterogeneity of primary tumor in a better way and keep the tumor complexity at molecular, genetic and pathological levels.Particularly, the PDPTX model, in which the isolated tumor tissue is inoculated under the renal capsule, is even better, because it solves the clrawbacks of traditional subcutaneous inoculation model.In traditional mod-els, the success rate is low, it’s not easy for lower grade tumor to form xenograft, and it’s not easy to reconstruct metasta-sis, etc.PDPTX provides a more ideal in vivo model for prostate cancer studies.It has irreplaceable advantages, especially in target therapy, new drug screening and individualized tumor treatment.

Objective To explore the association of C20orf54 gene rs3746804 position single nucleotide polymorphism and susceptibility to esophageal squamous cell carcinoma (ESCC).Methods Purification of genomic DNA from whole blood was used the Maxwell(R) 16 System.rs3746804 in C20ort54 was detected by direct sequencing in 434 ESCC patients from Changzhi (Shanxi province) and Linzhou (Henan province) and 554 healthy controls from Changzhi,Linzhou and including immigrators from Linzhou to Changzhi.Results For rs3746804,the genotypic frequencies of CT(37.5％ vs 51.0％,37.5％ vs 52.0％),CC (44.2％ vs 34.8％,44.2％ vs 33.0％) in Changzhi ESCC patients showed significant differences with healthy Changzhi controls and the healthy immigrator controls (all P ＜ 0.05),and the frequencies of TT(18.3％ vs 4.1％) and CC (44.2％ vs 54.6％) in Changzhi ESCC patients showed significant differences with Linzhou ESCC patients (all P ＜0.05).The genotypic frequencies of TT (4.1％ vs 15.0％),CT (41.2％ vs 52.0％) and CC(54.6％ vs 33.0％) showed significant differences between Linzhou ESCC patients and the healthy immigrator controls (all P ＜ 0.05),and the frequencies of TT (4.1％ vs 14.1％) and CC (54.6％ vs 34.8％) showed significant differences between Linzhou ESCC patients and Changzhi healthy controls (all P ＜ 0.01).Meanwhile,there were significant differences between ESCC patients (including Changzhi and Linzhou ESCC patients) and healthy controls (including the healthy Changzhi,Linzhou and immigrator controls) in genotypic frequencies of CT(39.2％ vs 48.7％) and CC (48.8％ vs 38.2％) (all P ＜ 0.01).CT and CT + TT genotype could decrease the risk of ESCC compared with the CC genotype (OR =0.630,95％ CI0.481-0.826 ; OR =0.654,95％ CI 0.507-0.844).Conclusion There is a closed relationship between SNP rs3746804 in C20orf54 and susceptibility to ESCC.

ObjectiveTo study the relationship between plasma riboflavin levels and esophageal squamous cell carcinoma.Methods We detected and compared plasma concentrations of riboflavin in patients with esophageal squamous cell carcinoma (ESCC) and immigrants of Linzhou living in Changzhi.Plasma riboflavin levels were quantified in 445 ESCC patients,689 healthy control subjects and 347 immigrants of Linzhou living in Changzhi by using enzyme-linked immunosorbent assay.ResultsThe plasma riboflavin levels in patients with ESCC were significantly lower than those in the healthy controls and immigrants of Linzhou living in Changzhi [ (731.69 ± 330.67 ) μg/L vs ( 1090.43 ± 445.08 ) μg/L,(731.69 ± 330.67) μg/L vs ( 897.58 ± 177.78) μg/L,respectively,all P ＜ 0.05 ],and the plasma riboflavin levels of the healthy controls were higher than those in the immigrants of Linzhou living in Changzhi (P ＜ 0.05).ConclusionPatients with ESCC have decreased plasma riboflavin levels as compared with the healthy controls and immigrants of Linzhou living in Changzhi,there exists a lack of riboflavin in ESCC patients,but the specific mechanism needs further study.