ObjectiveTo investigate the processing technology of calcined Haematitum based on the concept of quality by design（QbD） and to assess its health risk. MethodsTaking whole iron content， Fe²⁺ dissolution content and looseness as critical quality attributes（CQAs）， and calcination temperature， calcination time， spreading thickness and particle size as critical process parameters（CPPs） determined by the failure mode and effect analysis（FMEA）， the processing technology of calcined Haematitum was optimized by orthogonal test combined with analytic hierarchy process-criteria importance through intercriteria correlation（AHP-CRITIC） hybrid weighting method. The contents of heavy metals and harmful elements were determined by inductively coupled plasma mass spectrometry， and the health risk assessment was carried out by daily exposure（EXP）， target hazard quotient（THQ） and lifetime cancer risk（LCR）， and the theoretical value of the maximum limit was deduced. ResultsThe optimal processing technology for calcined Haematitum was calcination at 650 ℃， calcination time of 1 h， particle size of 0.2-0.5 cm， spreading thickness of 1 cm， and vinegar quenching for 1 time［Haematitum-vinegar（10：3）］. The contents of 5 heavy metals and harmful elements in 13 batches of calcined Haematitum were all decreased with reductions of up to 5-fold. The cumulative THQ of 2 batches of samples was>1， while the cumulative THQ of all batches of Haematitum was>1. The LCR of As in 1 batches of Haematitum was 1×10^-6-1×10^-4， and the LCR of the rest was<1×10^-6， and the LCRs of calcined Haematitum were all<1×10^-6， indicating that the carcinogenic risk of calcined Haematitum was low， but special attention should still be paid to Haematitum medicinal materials. Preliminary theoretical values of the maximum limits of Cu， As， Cd， Pb and Hg were formulated as 1 014， 25， 17， 27， 7 mg·kg^-1. ConclusionThe optimized processing technology of calcined Haematitum is stable and feasible， and the contents of heavy metals and harmful elements are reduced after processing. Preliminary theoretical values of the maximum limits of Cu， As， Cd， Pb and Hg are formulated to provide a scientific basis for the formulation of standards for the limits of harmful elements in Haematitum.

ObjectiveTo investigate the processing technology of calcined Haematitum based on the concept of quality by design（QbD） and to assess its health risk. MethodsTaking whole iron content， Fe²⁺ dissolution content and looseness as critical quality attributes（CQAs）， and calcination temperature， calcination time， spreading thickness and particle size as critical process parameters（CPPs） determined by the failure mode and effect analysis（FMEA）， the processing technology of calcined Haematitum was optimized by orthogonal test combined with analytic hierarchy process-criteria importance through intercriteria correlation（AHP-CRITIC） hybrid weighting method. The contents of heavy metals and harmful elements were determined by inductively coupled plasma mass spectrometry， and the health risk assessment was carried out by daily exposure（EXP）， target hazard quotient（THQ） and lifetime cancer risk（LCR）， and the theoretical value of the maximum limit was deduced. ResultsThe optimal processing technology for calcined Haematitum was calcination at 650 ℃， calcination time of 1 h， particle size of 0.2-0.5 cm， spreading thickness of 1 cm， and vinegar quenching for 1 time［Haematitum-vinegar（10：3）］. The contents of 5 heavy metals and harmful elements in 13 batches of calcined Haematitum were all decreased with reductions of up to 5-fold. The cumulative THQ of 2 batches of samples was>1， while the cumulative THQ of all batches of Haematitum was>1. The LCR of As in 1 batches of Haematitum was 1×10^-6-1×10^-4， and the LCR of the rest was<1×10^-6， and the LCRs of calcined Haematitum were all<1×10^-6， indicating that the carcinogenic risk of calcined Haematitum was low， but special attention should still be paid to Haematitum medicinal materials. Preliminary theoretical values of the maximum limits of Cu， As， Cd， Pb and Hg were formulated as 1 014， 25， 17， 27， 7 mg·kg^-1. ConclusionThe optimized processing technology of calcined Haematitum is stable and feasible， and the contents of heavy metals and harmful elements are reduced after processing. Preliminary theoretical values of the maximum limits of Cu， As， Cd， Pb and Hg are formulated to provide a scientific basis for the formulation of standards for the limits of harmful elements in Haematitum.

ObjectiveTo explore the mechanism of Huanglian Wendantang on damp-heat type diabetes enteropathy rats based on the G protein coupled bile acid receptor 5/glucagon like peptide-1 （TGR5/GLP-1） signaling pathway and intestinal flora. MethodsA total of 72 male Sprague Dawley （SD） rats were adaptively fed for one week. Twelve SD rats were randomly selected as a blank group and fed with an ordinary diet. The rest of the SD rats were fasted for 12 hours without water. A rat model with damp-heat type diabetes enteropathy was made by left intraperitoneal injection of streptozotocin （55 mg·kg^-1） and high sugar and high fat diet （20% sucrose solution + high fat diet） in a humid and hot environment （artificial climate box： temperature 30-34 ℃， relative humidity： 85%-95%）. After successful modeling， the rats were randomly divided into a model group， a metformin group （200 mg·kg^-1）， low-dose， medium-dose， and high-dose Huanglian Wendantang groups （7.10， 14.20， 28.39 g·kg^-1）， with 12 rats in each group. The normal group and the model group were orally administered with physiological saline once a day for 6 consecutive weeks. During the observation period， the weight and blood glucose levels of rats were measured and recorded weekly. After the administration， fresh feces were collected from rats， and 16S rRNA sequencing technology was used to study the differences and changes in intestinal flora among different groups. The levels of tumor necrosis factor-α （TNF-α） and interleukin-6 （IL-6） in the serum of rats were detected by enzyme-linked immunosorbent assay （ELISA）， and the pathological morphological changes of colon tissue were examined. The expression of TGR5 and GLP-1 in colon tissue was detected by immunohistochemistry， and the expression of TGR5 and GLP-1 proteins in colon tissue was measured by Western blot. ResultsCompared with the blank group， the model group showed a decrease in body weight， an increase in blood glucose， and significant damp-heat symptoms. The levels of IL-6 and TNF-α in serum were significantly increased （P<0.01）. The expression of TGR5 and GLP-1 was decreased （P<0.01）， and the pathogenic bacteria were increased. Compared with the model group， the treatment groups exhibited improvements in body weight， blood glucose levels， and damp-heat syndrome in rats. Among them， the high-dose group of Huanglian Wendantang displayed the most significant improvement effect， with significantly reduced inflammation levels （P<0.01） and elevated expression of TGR5 and GLP-1 （P<0.01）. Colonic pathological sections showed that Huanglian Wendantang could effectively ameliorate colonic pathological changes. The 16S rRNA sequencing result indicated a significant increase in beneficial bacteria in the treatment groups. ConclusionHuanglian Wendantang can effectively ameliorate the damp-heat symptoms and blood glucose levels in rats with damp-heat type diabetes enteropathy， and it may exert an effect by regulating the TGR5/GLP-1 signaling pathway and intestinal flora disorder.

ObjectiveUltra-performance liquid chromatography-quadrupole/electrostatic field orbitrap high resolution mass spectrometry（UPLC-Q-Exactive Orbitrap MS/MS） was used to investigate the metabolism and distribution of nardosinone in rats， then metabolic pathways were speculated. MethodRats were administered with 30 mg·kg^-1 of nardosinone suspension by gavage for 3 consecutive days， and plasma， urine， feces， and tissues of heart， liver， spleen， lung， kidney， brain， stomach， and intestine were collected at predetermined time points. After treatment， the samples were processed for UPLC-Q-Exactive Orbitrap MS/MS， and the MS data were analyzed using Xcalibur 2.2 software. The metabolites were searched by comparing the base peak chromatogram and extracted ion chromatogram between the treated group and blank group， and based on the relative retention time（t_R）， quasi-molecular ion peak， precise molecular mass， and fragment ions of MS/MS， the elemental composition were searched using databases such as SciFinder and PubChem， as well as referring to relevant literature， the possible metabolites were identified and the metabolic pathways were inferred. ResultA total of 30 metabolites of nardosinone were identified， including 15， 19， 12， 7， 4， 11， 8， 13， 13， 8 and 12 metabolites in urine， feces， plasma， brain， heart， liver， spleen， lung， kidney， stomach and intestine， respectively. The main metabolic pathways of nardosinone in rats were hydroxylation， dehydroxylation， reduction， dehydrogenation， hydration， dehydration， carboxylation， glucuronidation， and dehydroxy-isopropyl. ConclusionNardosinone can be metabolized by phase Ⅰ and phase Ⅱ metabolism in rats， and the metabolites are widely distributed in the major organs. The results of this study can provide a basis for further research on the pharmacodynamic material basis， pharmacological mechanism and clinical application of nardosinone.

ObjectiveTo determine the pharmacodynamic substance basis of Epimedii Folium（EF） and Epimedii Wushanensis Folium（EWF） in promoting osteogenic differentiation， and to establish a method to analyze the material basis of Chinese materia medica based on the correlation between chemical fingerprint and cellular metabolomics. MethodThe chemical fingerprints of 15 batches of EF with 4 species and 3 batches of EWF were analyzed by ultra performance liquid chromatography-quadrupole-electrostatic field orbitrap high-resolution mass spectrometry（UPLC-Q-Exactive Orbitrap-MS）， and partial least squares-discriminant analysis（PLS-DA） was used to analyze the peak areas of chemical fingerprints of samples. The effects of different samples on proliferative activity of MC3T3-E1 osteoblast precursors， as well as the activity of alkaline phosphatase（ALP） in osteoblasts were detected by cell counting kit-8（CCK-8） and enzyme-linked immunosorbent assay（ELISA）. At the same time， UPLC-quadrupole-time-of-flight mass spectrometry（UPLC-Q-TOF-MS/MS） was used to analyze the effects of different samples on the metabolomics of MC3T3-E1 cells， then metabolic peak table of osteogenic differentiation cells was constructed， and pharmacodynamic index mean Y₀ was introduced into the peak table. PLS was used to calculate mean Y₀ of each group， and the mean Y₀ was added to the peak table of chemical fingerprint to construct the correlation between chemical fingerprint and cell metabolome， the pharmacodynamic components of EF and EWF that promote bone differentiation were screened according to variable importance in the projection（VIP） value>1. The pharmacodynamic effects of EF and EWF were evaluated according to the mean Y₀ of each group. ResultThe chemical fingerprints of EF with different origins and EWF were completely separated. Compared with the blank group， the activity of MC3T3-E1 cells in EF and EWF groups was significantly increased， the activity of ALP in the Epimedium brevicornu（Gansu province）， E. koreanum and E. pubescens groups was significantly increased（P<0.05）. The results of cell metabolomics showed that the blank group and the model group had an obvious trend of separation. EF with different origins and EWF had different distance from the model group， indicating that EF with different origins and EWF had different effect on promoting osteogenic differentiation. Chemical fingerprint-cell metabolomics integration analysis screened 9 components closely related to the efficacy of EF and EWF， including diphylloside B， epimedin C， icariin， baohuoside Ⅰ， yinyanghuo B， β-anhydroicaritin， magnoflorine， cryptochlorogenic acid and quercetin. E. koreanum had the strongest effect on promoting osteogenic differentiation. ConclusionThis study determined that the material basis of EF and EWF promoting osteogenic differentiation were mostly flavonoids， alkaloids and organic acids， which provided ideas and methods for the screening of pharmacodynamic components and the prediction of therapeutic effect of Chinese materia medica.

Objective:To understand the incidence trend and temporal distribution of breast cancer and reproductive system cancers in women in different age groups and areas in China from 2006 to 2017.Methods:Based on the incidences of breast cancer, vulvar cancer, vaginal cancer, cervical cancer, uterine corpus cancer, and ovarian cancer in women, average age at diagnosis and cases in different age groups and areas in China were calculated, standardized through world population. Software Joinpoint 4.5.0.1 was used to calculate average annual percent of change (AAPC).Results:Between 2006 and 2017, the overall age-standardized incidence rate (ASIR) of the six cancers showed an increasing trend from 39.48/100 000 to 51.11/100 000 (AAPC=2.24%, 95% CI: 1.59%-2.89%). The increasing trend was more obvious in rural area (AAPC=4.65%,95% CI:3.67%-5.64%), whereas no significant increase was observed in urban area (AAPC=0.15%,95% CI:-0.26%-0.56%). Except uterine corpus cancer, the incidences of 5 cancers showed increasing trends. The incidences of cervical cancer showed similar upward trends in urban and rural areas. In urban area, the ASIRs of breast cancer, vaginal cancer and vulvar cancer showed no significant increase, while in rural area it showed significant increase. The ASIR of ovarian cancer showed a decreasing trend in urban area and an increasing trend in rural area. The average age at diagnosis increased for all the cancers, except uterine corpus cancer. However, after standardizing through world population, the increases in the standardized average age at diagnosis were observed only in cervical cancer and vaginal cancer from 49.11 and 55.15 years to 52.13 and 58.81 years, respectively. Conclusions:The overall ASIR of breast cancer and reproductive system cancers in women showed increase trend in China in 2006-2017, and the increase trend was more obvious in rural area than in urban area. Meanwhile, the accessibility to medical facilities in rural area needs to be improved to ensure medical care, early diagnosis and early treatment for the purpose of bridging the gap in female cancer incidence between rural area and urban area.

The major histocompatibility complex(MHC)is closely related to immune regulation.MHC shows distinct genetic polymorphism,and there are also species differences in MHC restriction.The human MHC is called human leukocyte antigen(HLA),and the mouse MHC is called H-2.The construction of humanized MHC transgenic mouse models is an important strategy to overcome the differences in MHC among species and simulate the characteristics of a human immune response.MHC transgenic mice are mainly divided into MHC Ⅰ or MHC Ⅱ single-transgenic mouse models and MHC Ⅰ and MHC Ⅱ double-transgenic mouse models.The development of HLA Ⅰ transgenic mouse model went through three stages,at present,the strategy of knocking out H-2Kb and H-2Db or murine β2m is adopted to eliminate the competitive inhibition of HLA Ⅰ molecules by endogenous H-2 class Ⅰ molecules.In the construction of an HLA Ⅱtransgenic mouse model,the β strand of murine origin is knocked out and HLA Ⅱ class genes are inserted.With the optimization of construction strategies,MHC transgenic mouse models have been applied to epitope vaccine development,tumor treatment,and genetic disease-association studies,becoming a powerful tool for preclinical trials.In this paper,we summarize the relevant data on MHC transgenic mouse models,as well as the construction strategies used for MHC transgenic mouse models and their application in vaccine development and disease treatment.

Objective To study the effects of vision on human postural control and the connection mechanisms of the brain's functional network.Methods 15 healthy male adults were required to perform 30 s of balanced standing on both legs with eyes open and eyes closed.The center of pressure(COP)and electroencephalograph(EEG)were recorded during balance.The sample entropy(sample En)of the COP was calculated.The phase lag index(PLI)in θ-,α-,β-band of EEG was calculated to construct the brain functional networks,and the clustering coefficient(C),characteristic path length(L),and the criteria(σ)of the small-world network were calculated based on graph theory.Results During balanced standing on both legs,the SampleEn of the COPY with eyes closed was significantly higher than that with eyes open(P＜0.05).The mean value of PLI in the α-band under the eyes closed state was significantly higher than that under the eyes open state(P＜0.05).The C and σ values in the α-band under the eyes closed state were significantly higher than those under the eyes open state,and the L value was significantly lower than that under the eyes open state(P＜0.05).The frontal-central-parietal connectivity and the central-parietal connectivity strength in the α-band under the eyes closed state were significantly higher than those under the eyes open state(P＜0.05).The average PLI and C values in the α-band were moderately negatively correlated with the SampleEn of COPY (P＜0.05).The average PLI of the left prefrontal area,left parietal area,and left occipital area in the α-band under the eyes closed state had a moderate negative correlation with the SampleEn of COPY.The average PLI of the left central region and the right occipital area in the eyes-closed state was moderately negatively correlated with the SampleEn of COPY.Conclusions During the standing balance,when there is no visual input,the stability of body balance decreases,accompanied by enhanced brain network connectivity in α-band and the requirement for efficiency enhancement in information processing in the brain.The brain adopts different neural strategies when performing postural control under various visual conditions.

Objective:To investigate the clinicopathological characteristics of gastrointestinal tumors with SWI/SNF complex deficiency and to perform a prognostic analysis of the patients.Methods:Gastrointestinal tumor cases with SWI/SNF complex deficiency expression diagnosed at the Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai, China from August 2021 to May 2023 were collected. Hematoxylin and eosin (HE) stained slides were reviewed, and immunohistochemical results were analyzed. Clinical and pathological information was recorded, and relevant literature was reviewed.Results:A total of 36 cases of gastrointestinal tumor with loss of SWI/SNF complex expression were identified, including 28 males (77.8%) and 8 females (22.2%). The average age at diagnosis was 70 years (range 48-85 years). Clinical staging showed 3 cases in stage Ⅰ (8.3%), 12 cases in stage Ⅱ (33.3%), 19 cases in stage Ⅲ (52.8%), and 2 cases in stage Ⅳ (5.6%). Complete or partial loss of ARID1A expression was observed in 20 cases (55.6%); complete or partial loss of SMARCA2 expression was observed in 24 cases (66.7%). SMARCA4 exhibited complete loss of expression in 4 cases (11.1%). Eleven cases (30.6%) showed concurrent complete or partial losses of both ARID1A and SMARCA2 expression. Twelve cases (33.3%) had mismatch repair protein deficiency, all of which were characterized by MLH1/PMS2 absence. Mismatch repair protein deficiency was associated with loss of ARID1A expression ( P<0.01). Patients with mismatch repair protein deficiency were also associated with earlier clinical stage and a lower risk of lymph node metastasis compared to the ones with intact mismatch repair proteins ( P<0.05). Conclusions:SWI/SNF complex deficiency in gastrointestinal tumors is associated with dedifferentiation and often accompanied by mismatch repair protein deficiency. Compared to the cases with intact mismatch repair proteins, the cases with defective mismatch repair protein have an earlier clinical stage and a lower risk of lymph node metastasis.

Objective To investigate the effect of melanoma associated antigen D1 (Mage-D1)on mouse femoral bone mass and mineralization ability of mouse bone marrow mesenchymal cells (BMSCs)and its potential molecular mechanism.Methods Female Mage-D1 gene knockout heterozygous mice and male wild-type (WT)mice were subjected as parent mice to breed Mage-D1 gene knockout homozygous (Mage-D1 KO)mice.PCR and agarose gel electrophoresis were used to identify male Mage-D1 knockout (Mage-D1 KO)mice and littermate male wild-type (WT)mice.Micro-CT scanning was performed to observe mouse femoral bone mass,and ELISA and chemical assay were employed to detect serum levels of calcium,phosphorus,calcitonin,and parathyroid hormone in mice.After primary cultured BMSCs were identified with flow cytometry,immunofluorescence staining was utilized to detect the expression of Mage-D1 in BMSCs.BMSCs were infected by Mage-D1 silencing lentivirus,and then the cells were divided into negative control group (sh-NC)and silencing group (sh-Mage-D1).Cell scratch assay was conducted to detect the migration ability of BMSCs,and flow cytometry and CCK-8 assay were conducted to detect the cycle change and proliferation ability of BMSCs.After mineralization induction,alkaline phosphatase (ALP) staining and alizarin red staining were performed;RT-qPCR and Western blotting were used to measure the expression levels of ALP,Runx2 and Col1.RT-qPCR was used to detect mineralization-related genes p75NTR and Msx1.Results Compared with the WT mice,the femoral cortical bone thickness,cortical bone mineral content,cancellous bone mineral content,trabecular number,and cancellous bone surface density were decreased,and trabecular separation was increased in the Mage-D1 knockout homozygous mice (P<0.05).There were no significant changes in the serum levels of calcium,phosphorus,calcitonin and parathyroid hormone in mice after Mage-D1 knockout.Mage-D1 was expressed in the whole BMSCs and was highly expressed in the nucleus and perinuclear regions.Compared with the sh-NC BMSCs,the sh-Mage-D1 group had decreased proliferation ability (P<0.01),enhanced migration ability (P<0.01),and decreased expression of ALP,Runx2 and Col1 genes (P<0.05)and protein (P<0.01)after mineralization induction,milder ALP and alizarin red stain,and lower expression levels of p75NTR and Msx1.Conclusion Mage-D1 knockout can significantly reduce femur bone mass in mice.It can promote the proliferation and inhibit migration of BMSCs,and positively regulate their mineralization in vitro,and the p75NTR-Dlx1/Msx1 signaling axis may be involved in the regulation of bone metabolism by Mage-D1.