The rapid development of artificial intelligence (AI), especially generative AI (GenAI), has already brought, and will continue to bring, revolutionary changes to our daily production and life, as well as create new opportunities and challenges for diagnostic and therapeutic practices in the medical field. Haihe Hospital of Tianjin University collaborates with the National Supercomputer Center in Tianjin, Tianjin University, and other institutions to carry out research in areas such as smart healthcare, smart services, and smart management. We have conducted research and development of a full-process disease diagnosis and treatment assistance system based on GenAI in the field of smart healthcare. The development of this project is of great significance. The first goal is to upgrade and transform the hospital's information center, organically integrate it with existing information systems, and provide the necessary computing power storage support for intelligent services within the hospital. We have implemented the localized deployment of three models: Tianhe "Tianyuan", WiNGPT, and DeepSeek. The second is to create a digital avatar of the chief physician/chief physician's voice and image by integrating multimodal intelligent interaction technology. With generative intelligence as the core, this solution provides patients with a visual medical interaction solution. The third is to achieve deep adaptation between generative intelligence and the entire process of patient medical treatment. In this project, we have developed assistant tools such as intelligent inquiry, intelligent diagnosis and recognition, intelligent treatment plan generation, and intelligent assisted medical record generation to improve the safety, quality, and efficiency of the diagnosis and treatment process. This study introduces the content of a full-process disease diagnosis and treatment assistance system, aiming to provide references and insights for the digital transformation of the healthcare industry.
Artificial Intelligence ; Humans ; Delivery of Health Care ; Generative Artificial Intelligence

Objective To investigate the effect of Zuogui Jiangtang Jieyu Formula(左归降糖解郁方,ZJJF)on hippocampal neuron apoptosis in diabetic rats with depression and to ascertain whether its mechanism involves the regulation of JNK signaling pathway. Methods(i)A total of 72 specific pathogen-free(SPF)grade male Sprague Dawley(SD)rats were randomly divided into six groups,with 12 rats in each group:control,model,metformin(Met,0.18 g/kg)+fluoxetine(Flu,1.8 mg/kg),and the high-,medium-,and low-ZJJF dosages(ZJJF-H,20.52 g/kg;ZJJF-M,10.26 g/kg;ZJJF-L,5.13 g/kg)groups.All groups except control group were injected once via the tail vein with streptozotocin(STZ,38 mg/kg)combined with 28 d of chronic unpredictable mild stress(CUMS)to establish diabetic rat models with de-pression.During the CUMS modeling period,treatments were administered via gavage,with control and model groups receiving an equivalent volume of distilled water for 28 d.The effi-cacy of ZJJF in reducing blood sugar and alleviating depression was evaluated by measuring fasting blood glucose,insulin,and glycated hemoglobin levels,along with behavioral assess-ments,including the open field test(OFT),forced swim test(FST),and sucrose preference test(SPT).Hippocampal tissue damage and neuronal apoptosis were evaluated using hema-toxylin-eosin(HE)staining and terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling(TUNEL)staining.Apoptosis-related proteins Bax,Bcl-2,caspase-3,and the ex-pression levels of JNK/Elk-1/c-fos signaling pathway were detected using Western blot and real-time quantitative polymerase chain reaction(RT-qPCR).(ii)To further elucidate the role of JNK signaling pathway in hippocampal neuronal apoptosis and the pharmacological ef-fects of ZJJF,an additional 50 SPF grade male SD rats were randomly divided into five groups,with 10 rats in each group:control,model,SP600125(SP6,a JNK antagonist,10 mg/kg),ZJJF(20.52 g/kg),and ZJJF(20.52 g/kg)+Anisomycin(Aniso,a JNK agonist,15 mg/kg)groups.Ex-cept for control group,all groups were established as diabetic rat models with depression,and treatments were administered via gavage for ZJJF and intraperitoneal injection for SP6 and Aniso for 28 d during the CUMS modeling period.Behavioral changes in rats were evaluated through the OFT,FST,and SPT,and hippocampal neuron damage and apoptosis were ob-served using HE staining,Nissl staining,TUNEL staining,and transmission electron mi-croscopy(TEM).Changes in apoptosis-related proteins and JNK signaling pathway in the hippocampal tissues of rats were also analyzed. Results(i)ZJJF significantly reduced the high blood glucose,insulin,and glycated he-moglobin levels in model rats(P<0.01).It increased autonomous activity and decreased de-spair-like behaviors(P<0.01),improved the pathological damage of hippocampal neurons,increased the number of neuronal nuclei(P<0.01),and reduced the number of mechanocytes,vacuolar cells,and apoptotic neurons(P<0.05,P<0.01,and P<0.01,respec-tively).ZJJF down-regulated the expression levels of pro-apoptotic proteins Bax and caspase-3(P<0.01),up-regulated the anti-apoptotic protein Bcl-2(P<0.01),and significantly inhibit-ed the overexpression of phosphorylated JNK(p-JNK),Elk-1,and c-fos(P<0.01).(ii)SP6 in-creased autonomous activity and reduced despair time in model rats(P<0.05),although it had no significant effects on sucrose preference(P>0.05).It increased the number of Nissl bodies in hippocampal neurons(P<0.01),reduced the protein expression levels of Bax(P<0.01)and caspase-3(P<0.05),and decreased the number of apoptotic neurons(P<0.05).SP6 also increased the expression level of Bcl-2(P<0.01),and inhibited the high expression levels of p-JNK,Elk-1,and c-fos(P<0.01,P<0.01,and P<0.05,respectively),suggesting that hip-pocampal neuronal apoptosis in diabetic rats with depression is associated with abnormal ac-tivation of JNK signaling pathway.Compared with ZJJF group,ZJJF+Aniso group showed a decrease in sucrose preference(P<0.05)and an increase in despair time(P<0.01)with more notable hippocampal neuronal damage.This group also exhibited a decrease in expression level(P<0.01)Bcl-2 and an increase in expression levels of Bax,caspase-3,p-JNK,Elk-1,and c-fos(P<0.01,P<0.05,P<0.05,P<0.01,and P<0.05,respectively),indicating that the antidepressant effects of ZJJF,its improvement of neuronal apoptosis,and regulation of JNK signaling molecules could all be reversed by a specific JNK agonist. Conclusion ZJJF exerts a significant hypoglycemic effect and ameliorates the apoptosis of hippocampal neurons by inhibiting the activation of JNK signaling pathway,which is a promising formula for the treatment of diabetic depression in clinical settings.

OBJECTIVE: Improve the quality of testing in medical device manufacturers clean workshops to ensure the authenticity and reliability of testing data. METHODS: Analyze the problems and influencing factors found in the process of testing of medical device manufacturers clean workshops from 2016 to 2020, and put forward reasonable suggestions to ensure the quality of testing. RESULTS: In the process of testing, there are six factors that affect the quality of testing, including testing personnel, instruments and equipment, testing consumables, testing methods, testing environment and actual operation. CONCLUSIONS To improve the quality of testing, should strengthen the training of testing personnel, continuously improve the testing quality management system, establish an effective information communication mechanism, find out the influencing factors in time, provide objective, real and effective testing data for medical device manufacturing enterprises, and provide technical support for the production and supervision of medical devices.
Commerce ; Equipment and Supplies ; Reproducibility of Results

Lysophosphatidic acid (LPA), a bioactive lipid medium, plays an important role in the development and progression of ovarian cancer. Doxorubicin hydrochloride (DOX) is a first-line drug in the ovarian cancer clinical therapy, while the effect and molecular mechanism of LPA in the ovarian cancer with DOX treatment is still unclear. This study intended to explore the effect and molecular mechanism of LPA in ovarian cancer treated with DOX. SKOV3 and OVCAR-3 cells of human ovarian cancer and Chinese hamster ovary cells were treated with control, LPA (lOp-mol/L), DOX (2jjLmol/L) and LPA (10jJLmol/L) + DOX (2p,mol/L) respectively for 24 hours. The morphological changes of SKOV3 cells were observed under optical microscope and transmission electron microscope. Results showed that LPA reduced cell death and the degree of chromatin aggregation in SKOV3 cells treated with DOX; RT-qPCR showed that LPA treatment could down-regulate the mRNA levels of caspase-3 in DOX-treated SKOV3 cells (P<0. 05); Western blot showed that LPA treatment could reduce caspase-3 and cleaved caspase-3 levels treated with DOX in SKOV3, OVCAR-3 and CHO cells (P<0. 05); Flow cytometry using Annexin V/PI double staining showed that LPA could down-regulate apoptosis in SKOV3 cells treated with DOX (P<0. 05); DCFH-DA method was used to detect intracellular levels of reactive oxygen species (ROS) in SKOV3 cells. It was found that LPA reduced the intracellular ROS level treated with DOX (P<0. 05). Our preliminarily study showed the effect of LPA in the apoptosis of ovarian cancer treated with DOX, which may provide a reference for the drug therapy of ovarian cancer targeting LPA.

Objective To study the accuracy of Nolla method for age estimation of Northern Chinese Han children aged between 5.00 and 14.99 years based on original transformation tables and multiple regression model. Methods A total of 2 000 orthopantomographs （OPGs） were collected from the Hospital of Stomatology, Xi'an Jiaotong University, including 1 000 males and 1 000 females. Development stage of 7 left mandibular permanent teeth （except third molars） was assessed based on Nolla method, then age estimation was conducted through transformation tables and multiple regression model, respectively. Firstly, the development stage results of 7 permanent teeth were added up and the estimated age was obtained through the original transformation tables. Secondly, 80% of the samples （80 males and 80 females in each age group） were randomly selected from 2 000 OPGs as the train set. The chronological age of the selected patients was taken as the dependent variable, while gender and the development stage results of 7 permanent teeth were taken as the independent variable to establish multiple regression model. The remaining 20% of the samples were substituted into the model as the test set, to verify the accuracy of age estimation by multiple regression model. Results Mean chronological ages of males and females were 10.03±0.09 years and 10.01±0.09 years, respectively. The age estimated by original transformation tables showed an overestimation for males （0.18 years on average） and an underestimation for females （0.02 years on average）, with mean absolute error （MAE） of 0.94 years and 0.97 years, respectively. While the results by multiple regression model showed that males were overestimated by 0.06 years on average and females were underestimated by 0.02 years on average. The MAE was 0.66 years and 0.77 years, respectively. Conclusion The Nolla method is suitable for age estimation of Northern Chinese Han children. Compared with the original transformation tables method, the multiple regression model is more accurate for age estimation.
Adolescent ; Age Determination by Teeth ; Asian People ; Child ; Child, Preschool ; China ; Female ; Humans ; Male ; Molar, Third ; Radiography, Panoramic

Objective To explore the embolization effect of new platinum coils coated with [4COOH-P (DLLA-co-TMC)] biodegradable polymer and released vascular endothelial growth factor (VEGF) into intracranial aneurysms on rat intracranial aneurysms. Methods A total of 54 adult healthy female SD rats were randomly divided into Group Ⅰ with general platinum coils, Group Ⅱ with polymer-coated platinum coils and Group Ⅲ with platinum coils modified with VEGF (n=18).The right common carotid arteries (CCA) of rats in each group were exposed; and the 8 mm lengths of platinum coil segments were inserted into the ligated right CCA of rats. The distal right CCA was performed ligation and restored the blood flow; 6 rats each time at 15,30 and 90 d after the surgery were chosen;and the distal right CCA was used as aneurysm models,and the left CCA without the coil placement or surgical disruption in Group I with general platinum coil was chosen as normal control.The proliferation and fibrosis of endothelial cells were observed by HE staining; von Willebrand Factor (vWF) expression was detected by immunohistochemical staining; and VEGF expression was examined by Western blotting. Results Cellular proliferation and fibrosis in Group Ⅲ with platinum coils modified with VEGF enjoyed significantly higher grade than those in Group Ⅰ with general platinum coils 10,60 and 90d after the surgery (P＜0.05); Cellular proliferation and fibrosis in Group Ⅲ with platinum coils modified with VEGF enjoyed significantly higher grades than those in Group Ⅱ with polymer-coated platinum coils 30 d after the surgery (P＜0.05).Pathological observations showed that the massive intimal hyperplasia and substantial clot completely occluded the aneurysm lumen in Group Ⅲ with platinum coils modified with VEGF; New small blood vessels having vwf-positive expression were noted in the fiberized tissues;the thrombosis in Group Ⅰ with general platinum coils and Group Ⅱ with polymer-coat platinum coils were not fully organized and showed loose hyperplasia structure with a large number of internal spaces.Western blotting indicated that the VEGF level in Group Ⅲ with platinum coils modified with VEGF were significantly higher than that in other groups 15 and 30 d after the operation,however,the VEGF level in Group Ⅲ with platinum coils modified with VEGF 90 d after the surgery was decreased because the lumen completed fibration and degradation of 4COOH-P (DLLA-co-TMC). Conclusion The VEGF-eontaining biodegradable polymer,by slowly releasing VEGF to modify the surface of platinum coils, could enhance the cellular proliferation, thrombosis and formation of dense fibrous tissue in aneurysm lumen; as compared with general platinum coils,these new platinum coils could occlude the rat aneurysm faster and more completely.

[Objective]To explore the distribution and expression changes of tight junctional protein JAM-1 in rat models after intracerebral hemorrhage (ICH) and their significance.[Methods]One hundred and twenty-eighty healthy male SD rats were randomly divided into normal control group (n=16) and ICH group (n=112),and the ICH models were induced by stereotactically injecting 75 uL autologous blood into the right caudate nucleus.Seven time points after ICH (6,12,24 and 48 h,and 3,7 and 14 d after ICH,16 rats for each time point) were chosen.BBB permeability was evaluated by Evans blue dye extravasation.The distribution and expression of JAM-1 were detected by immunofluorescence and real-time quantitative PCR.[Results] As compared with that in the normal control group,BBB permeability in the ICH group significantly increased at 24 and 48 h,and 3 and 7 d after ICH (P＜0.05).JAM-1 expression decreased at blood vessels at 12,24 and 48 h after ICH,and JAM-1 expressed at the circulatingleukocytes3 dafterlCH,and abundant JAM-1 positive cells around hematoma were noted in the ED-l-positve macrophages 7 d after ICH.JAM-I mRNA significantly decreased at 12,24 and 48 h after ICH,and significantly increased 7 d after ICH as compared with that in the normal control group (P＜0.05).[Conclusion] JAM-1 experssion changes not only participate in regulation of BBB permeability but also play roles in inflammatory insult after ICH.

Objective To investigate the proliferative differences of adipose-derived stem cells (ADSCs) from neonatal suckling SD rats (5-d-old) and adult ones under the same culture condition.Methods ADSCs were isolated from the subcutaneous adipose tissues of neonatal suckling SD rats and adult ones,and then,type Ⅰ collagenase digestion was employed to obtain the ADSCs; the morphology of these cells was detected.The expressions of such cell surface markers as CD45,CD29 and CD90 were observed. The number of ADSCs on the 4th d of culture under the same condition and with the same planted density was compared between the neonate and adult rats. In vitro culture of the second generation of ADSCs was performed in the 96-well plates, and CCK-8 and alamar blue kit were employed to compare and quantitate the proliferative differences; optical density was observed by microplate reader. Results The ADSCs from neonatal SD rats and adult ones expressed the stem cell biomarkers: the expression of CD45 was negative, and that of CD29 was 98.04％ and 93.17％,respectively,and that of CD90 was 94.92％ and 93.3％,respectively,for neonate SD rat and adult ones.The cell counting results indicated that the number of ADSCs from neonatal rats ([8.87±0.13]×105 cells) was larger than that of adult ones ([4.51±0.36]×105 cells) after being cultured under the same condition and at the same planted density. The optical density value of ADSCs in neonatal rats was significantly higher than that in adult ones on the 6th and 7th d of culturing detected by CCK-8 kit and on the 2nd-7th d of culturing by alamar blue assay. Conclusion The proliferative ability of ADSCs from neonatal rats is greater than that of adult ones.

Objective To investigate the effect of nimesulide (NIM), a selective cyclooxygenase-2 (COX-2) inhibitor, on angiopoietins (Ang) gene expression of human glioma xenografts in nude mice and its significance. Methods Human SHG44 glioma cells were inoculated subcutaneously in 16 nude mice to establish xenograft models, and then these mouse models were randomly divided into NIM treatment group and control group. NIM (6 mg/kg) and saline were poured into the stomachs of the mice in each group, respectively, once daily for 35 d. The mRNA expressions of Ang-1 gene and Ang-2 gene in the xenografts were determined by RT-PCR. Microvessel density (MVD) in the xenografts was assessed by immunohistochemical technique. The tumor growth curve was drawn and the inhibition ratio of tumor growth was calculated. Results NIM could significantly inhibit the glioma xenografts growth with its inhibition rate reaching 42.03%. The mRNA expression of Ang-2 gene in NIM treatment group (0.2032±0.0185) was significantly lower than that in control group (0.6024±0.0289, P＜0.05), but that of Ang-1 gene showed no significant changes; therefore, the mRNA ratio of Ang-2/Ang-1 genes was decreased (0.5825±0.0621 vs. 1.5847±0.1948, P＜0.05). MVD in the xenografts of the NIM treatment group was significantly lower than that in the control group (P＜0.05). Conclusion NIM, by down-regulating the mRNA expression ofA ng-2 gene and changing the mRNA ratio of Ang-2/Ang-1 genes, can inhibit the tumor growth

Objective To explore the effect of chondroitin sulfate enzyme ABC (chABC) on glial scar in rat models of brain traumatic injury (TBI). Methods Thirty-eight Wistar rats were randomly divided into 5 groups, including normal control group (n=2), model group (rat models of TBI,n=9), 1.0 U/mL chABC treatment group (n=9), 2.5 U/ml chABC treatment group (n=9) and 5.0 U/ml chABC treatment group (n=9). After performing TBI by free falling in the later 4 groups, rats of the model group were given no treatment, while those of the other 3 groups were administrated with different concentrations of chABC by local injection respectively. One, 2 and 4 w after TBI, HE staining was performed on the brain tissues of these rat models;and immunohistochemical assay and Western blotting were employed to evaluate the secreting of chondroitin sulfate proteoglycans (CSPGs) and the therapeutic effect of chABC on glial scar. Data were statistically analyzed using t-test. Results Pathological test revealed the scars in the treatment groups were significantly fewer than those in the model group 2 w after TBI, with 5.0 U/mL chABC treatment group enjoying the fewest level (P<0.05). Immunohistochemical assay showed that the secreting of CSPGs in the treatment groups and model group was significantly increased than that in normal control group 2 w after TBI (P<0.05);the 5.0 U/ml chABC treatment group showed an obvious reduction of CSPGs secreting as compared with the model group (P<0.05). Western blotting indicated that the treatment groups showed an obvious reduction of CSPGs secreting as compared with the model group 1, 2 and 4 w after TBI (P<0.05);an obvious gradual reduction of CSPGs secreting in the model group, 2.5 and 5.0 U/ml chABC treatment groups was noted 1, 2 and 4 w after TBI (P<0.05). Conclusion ChABC could degrade the glial scar by degrading the CSPGs molecules and improve the microenvironment of local axonal regeneration after TBI;In this experiment, the highest concentration of chABC (5U/ml) shows the best effect on removing the glial scar.