Objective To establish the functional constipated mouse model by compound diphenoxylate, and explore the anti-constipation effect of black garlic polysaccharide. Methods Mouse small intestine ink propulsion experiment and mouse defecation experiment were carried out respectively. The mice in each experiment were randomly divided into blank group, model group, positive group and black garlic polysaccharide （0.25, 0.5, 1 g/kg） groups. Mice in blank group and model group were given distilled water, and in positive group were given lactulose oral solution. Compound diphenoxylate （5 mg/kg） was intragastric administrated after 1 week of administration, and small intestine propulsion experiment and defecation experiment were conducted respectively. Results Compared with model group, intestinal propulsion rate of black garlic polysaccharide groups was significantly increased and first dejection time was significantly shorten, and the number, weight and fecal water content increased significantly at 6 h in middle and high dose groups. Conclusion Black garlic polysaccharide could promote intestinal propelling, shorten defecation time and increase fecal water content.

The basement membrane is a specialized extracellular matrix between the epithelium and the mesenchyme.In stratified epithelium,only the basal cells in contact with the basement membrane exhibit the apical-basal polarity,whereas the epithelial cells do being not in contact with the basement membrane do not exhibit the apical-basal polarity.The basement membrane plays an important role in epithelial cell polarization.It is an important extracellular matrix(ECM)structure in the multicellular organisms,is situated between the epithelium and the mesenchyme,and is produced jointly by the epithelial cells and mesenchymal cells.Its components mainly include Laminin,type Ⅳ collagen(Col-Ⅳ),nidogen(NDG),and heparan sulfate proteoglycans(HSPG),and each component plays the different role in influencing the epithelial cell polarity.The network scaffold formed by Col-Ⅳ and Laminin is the main structure of the basement membrane,and the integrity of the structure affects the epithelial cell polarization.This review summarizes the composition and structure of the basement membrane,focuses on its role in epithelial cell polarization and its mechanism,and compiles the current status of biomimetic basement membrane materials that promotes the epithelial cell polarization,and provides the theoretical foundation for further exploration of the establishment and maintenance of epithelial cell polarity.

Transcatheter aortic valve replacement(TAVR)has become one of the effective methods for treating patients with aortic valve disease.With the continuous maturity of technology,innovation of instruments and increasing experience,the indications for TAVR has been expanded.Following international trends,the number of TAVR in China has steadily increased with each passing year.In 2023,the long-term follow-up results of TAVR in low-risk AS patients further confirm the long-term benefits of TAVR.The relevant research on TAVR for patients with aortic regurgitation and patients with bicuspid aortic stenosis provide evidence support for the expansion of TAVR indications.At the same time,the development of valve devices and new technological innovations are emerging in an endless stream,and the new concept of full life cycle management is increasingly being valued.Especially in China,the development of local devices is progressing rapidly,and multiple devices have entered the clinical research stage.The clinical manifestations and research results are worth pursuing.

To address the key challenges in multivariate statistical modeling,a higher-order derivative approach combined with vector space angle multiplicative error correction was proposed for establishing an acid value prediction ordinary least squares(OLS)regression model based on attenuated total reflectance-Fourier transform infrared(ATR-FTIR)spectroscopy.By using acid values measured by potentiometric titration as reference,ATR-FTIR spectroscopy was utilized for direct calibration and prediction of acid values on 96 kinds of lubricating oil samples from a wind turbine.Firstly,the simulated hyperbolic(SH)method was employed to obtain accurate fourth derivative spectrum,resolving overlapping bands and enhancing spectral selectivity.Then,from the calibration set(48 samples),informative spectral regions were identified based on correlation coefficients.Next,the sample with the highest acid value was selected as the reference and1/(1+tan(θ/2))was used as the metric relation of the spectrum to suppress the multiplicity error caused by factors such as the change of effective optical path in ATR-FTIR spectroscopy.After pretreatment of the spectrum by the method of fourth-order derivative combined with angular quantity,the number of variables decreased from 1737 to 8,and the matrix condition number decreased from 1.85×1015 to 56.34,which effectively eliminated the collinearity issue for OLS regression.Direct OLS modeling on spectral preprocessed data achieved a determination coefficient of 0.981 for 47 validation samples,with a relative error range of-8.38%-8.22%,outperforming the commonly used partial least squares(PLS)method(Determination coefficient of 0.865,relative error of-27.82%-22.38%).It was proved that effective data preprocessing significantly improved the prediction accuracy of the model.Furthermore,when the number of calibration set was compressed to 25 and the number of validation set was expanded to 70,the model retained 8 variables with a condition number of 42.60,the determination coefficient of validation set was 0.972,and the relative error ranged from-10.80%to 12.31%.Comparing with the PLS method(Determination coefficient of 0.724,relative error of-34.26%-53.84%),the improvement was more obvious,which showed that the method could still have high prediction accuracy even with fewer modeling samples as well as robustness against multiplicative error interference.

Objective:To investigate the study on the diagnostic value of multimodal ultrasound technique for the lesion of extensor carpi ulnaris(ECU)tendon in patients with rheumatoid arthritis(RA).Methods:A total of 175 RA patients who were confirmed by the department of rheumatology of Yantaishan Hospital of Yantai city from December 2021 to January 2023 were selected,and them were included into the RA group.Other 50 patients without RA but with clinical symptoms of wrist were included into the non-RA group,and 50 healthy volunteers were included into the healthy control group.All subjects underwent routine ultrasound and shear wave elastography(SWE)examination on wrist,and then,the characteristics of ultrasound images of wrists and the blood flow distribution of ECU power Doppler ultrasonography(PDUS)were recorded.SWE was used to measure ECU to obtain elastic modulus index(EI)and velocity modulus index(VI).The differences between three groups were compared,and the receiver operating characteristic(ROC)value of RA patients were drawn,so as to confirm the area under curve(AUC)value and optimize cutoff value.Results:There were significant differences in EI and VI of the ECU tendon among three groups(F=61.15,61.28,P<0.05),respectively.The optimal cut-off values of EI and VI were respectively 319.35 kPa and 10.55 m/s in RA patients.In RA patients,age and disease course had significant influences on EI(r=0.19,0.21,P<0.05),and age,disease course,ultrasound score of wrist joint,and grade of power Doppler ultrasonography PDUS of the ECU tendon(ECUPDUS)had significant influences on VI(r=0.19,0.15,-0.16,-0.17,P<0.05).Conclusion:SWE is able to quantitatively and non-invasively assess the stiffness information of the ECU tendon in RA patients.After the supplement of gray-scale ultrasound and PDUS,multimodal ultrasound technique can clearly judge the correlation of the lesions of ECU tendon of RA patients.

Objective To observe the application effect of a quantitative nursing management program in the operating room constructed based on risk assessment strategies for patients with osteochondroma. Methods Thirty patients who underwent osteochondroma surgery from July 2021 to June 2022 at Suqian Hospital Affiliated to Xuzhou Medical University were set as control group (receiving conventional nursing management), and 30 patients who underwent osteochondroma surgery from July 2022 to June 2023 were set as study group (receiving quantitative nursing management centered on risk assessment strategies). The perioperative indicators, psychological stress status, self-care ability, quality of life, and complication occurrence were compared between the two groups. Results The recovery time of gastrointestinal function, postoperative anal exhaust time, and hospital stay in the study group were (0.72±0.12), (1.71±0.32), and (21.32±3.47) days, respectively, which were shorter than (1.04±0.28), (2.02±0.42), and (28.02±4.02) days in the control group (P < 0.05). After nursing, the scores of the Self-rating Depression Scale and Self-rating Anxiety Scale in the study group were (36.87±5.64) and (32.42±6.82), respectively, which were lower than those (45.24±6.32) and (48.33±6.56) in the control group (P < 0.05). After nursing, the total scores of the Exercise of Self-Care Agency Scale (ESCA) and SF-36 Scale in the study group were (142.87±15.62) and (86.42±7.28), respectively, which were higher than (125.42±16.32) and (78.33±8.56) in the control group (P < 0.05). The total complication rate in the study group was 6.67%, which was lower than 26.67% in the control group (P < 0.05). Conclusion The quantitative nursing management program in the operating room constructed centered on risk assessment strategies can effectively improve the postoperative recovery effect of patients with osteochondroma, relieve psychological stress responses, enhance self-care ability and quality of life, and reduce the occurrence of complications.

Tunneling nanotube (TNT) is a newly discovered communication mode between animal cells in recent years, which have important physiological and pathological significance. However, the role of TNT in bone biology is still unclear. At present, there are many reports about tunneling nanotubes in bone marrow mesenchymal stem cells, osteoclast precursor cells, osteoblasts and immune cells. This review describes the research advances of TNT and its research progress in bone biology. It looks forward to the research direction of TNT in oral and maxillofacial bone development and bone biology, to provide new strategies for the maintenance of bone homeostasis and the treatment of bone diseases.
Animals ; Bone and Bones ; Nanotubes ; Osteoclasts ; Biology ; Cell Communication/physiology*

Fibro-osseous lesions is a class of diseases with obvious similarities in clinical manifestations and pathological features, which has been attracting the attention of clinicians and pathologists. The latest WHO 2022 Classification (5th edition) included six of these diseases (cemento-osseous dysplasia, segmental odontomaxillary dysplasia, fibrous dysplasia, juvenile trabecular ossifying fibroma, psammomatoid ossifying fibroma and familial gigantiform cementoma) in the " fibro-osseous tumours and dysplasias ", and put forward new ideas on the diagnosis and treatment of these diseases. According to the latest WHO 2022 Classification (5th edition), the clinical and pathological features, diagnosis and differential diagnosis of these six diseases were described.
Humans ; Fibroma, Ossifying/pathology* ; Diagnosis, Differential ; Cementoma/pathology* ; Jaw Neoplasms ; Facial Bones

The hyperacute stage of myocardial infarction refers to a period of time within 30 minutes after the occurrence of myocardial infarction, when the symptoms are not obvious and the diagnosis is difficult, and the related pathophysiological mechanism has received less attention. In this study, proteomics was used to investigate the pathological changes in the early hyperacute phase of myocardial infarction, aiming to provide experimental evidence for pathological mechanism of myocardial infarction hyperacute stage. Meanwhile, the intervention effect and related mechanism of salvianolate injection were discussed based on heat shock protein B6 (HSPB6), aiming to benefit the clinical rational use of salvianolate injection. The protein expression changes before and after myocardial infarction model establishment were detected by label-free proteomics via mass spectrometry and analyzed by bioinformatics method. Then the binding effect of salvianolate injection on the commonly differential protein HSPB6 was evaluated by molecular docking technology, which was finally verified by animal experiments. All animal experimental protocols were approved by the Ethics Committee of Xiyuan Hosptial (2022XLC041). The results of this study showed that a total of 2 166 proteins were quantified by lable-free proteomics, of which 194 shared differential proteins were involved in myocardial injury and body regulation in the hyperacute phase of myocardial infarction, mainly involving molecular functions such as protein homodimerization activity, oxygen binding and transport, and serine endopeptidase inhibitor activity. Among them, HSPB6 protein is involved in the regulation of myocardial function. Molecular docking results indicated that magnesium salvianolate acetate, which is the main component of salvianolate injection, had the lowest binding energy with HSPB6 protein: -14.53 kcal·mol^-1. Animal experiments showed that compared with the Sham group, the model group had significantly lower ejection fraction (EF) and fractional shortening (FS) (P < 0.001), cardiac blood perfusion decreased significantly (P < 0.001). There were obvious pathological changes such as myocardial fiber disorder, cardiomyocyte edema and interstitial small blood vessel congestion; the injury of cardiac function of rats in the administration group was attenuated, and the FS of rats in the low-dose group was significantly improved (P < 0.05), the pathological injury of myocardial tissue was markedly mitigated, and the expression of HSPB6 protein was up-regulated to varying degrees (P < 0.01, P < 0.001). In conclusion, salvianolate injection could be able to improve the cardiac function and pathological morphology of rats in the early hyperacute stage of myocardial infarction, and its mechanism may be related to the promotion of expression of HSPB6.

Objective : To investigate the effects of angiopoietin 4 (ANGPT4) on the odontogenic differentiation of human dental pulp stem cells. Methods : This study has been reviewed and approved by the Ethics Committee, and informed consent has been obtained from patients. Human premolars were fixed, decalcified, dehydrated, embedded, and sectioned. Immunofluorescence staining was used to observe the expression and localization of ANGPT4. Human dental pulp stem cells (hDPSCs) were isolated and cultured in vitro. The growth state and morphology of hDPSCs were observed under an inverted phase contrast microscope. The expression of cell surface-related molecular markers was detected by flow cytometry. Alkaline phosphatase and alizarin red S staining were used to detect the odontogenic differentiation potential of hDPSCs. Oil-red O staining was used to detect the adipogenic differentiation potential of hDPSCs. RNA was extracted from hDPSCs at different time points after odontogenic induction, and RT-qPCR was used to analyze the mRNA expression of ANGPT4 and odontogenic-related genes during the odontogenic differentiation of hDPSCs in vitro. siRNA gene silencing technology was used to silence the expression of ANGPT4 in hDPSCs, and the silencing efficiency was detected by RT-qPCR and Western Blot. After silencing ANGPT4 in hDPSCs for 24 h, odontogenic induction was performed. Alkaline phosphatase and alizarin red S staining were performed on the 7th and 14th of induction to detect the odontogenic differentiation ability of hDPSCs after silencing ANGPT4 Results : Immunofluorescence staining of human premolars showed that ANGPT4 was expressed in odontoblasts and sub-odontoblastic cell-rich zone. hDPSCs were in good condition after 14 days of isolation and culture. Under the microscope, multiple cell colonies were observed, and the cell morphology was uniform and long spindle-shaped. The results of flow cytometry showed that hDPSCs expressed mesenchymal stem cell markers CD105 (90.42%) and CD90 (97.15%), but did not express hematopoietic cell markers CD45 (0.01%) and CD34 (0.08%). After odontogenic and adipogenic induction of hDPSCs, alkaline phosphatase staining, alizarin red S staining and oil red O staining were positive. The results of RT-qPCR after the odontogenic induction of hDPSCs showed that ANGPT4 was highly expressed on the 5th, 7th, 11th and 14th days of differentiation of hDPSCs (P<0.05), with the highest expression level on the 5th day. After hDPSCs were transfected with si-ANGPT4, the expression of ANGPT4 mRNA and protein was significantly down-regulated (P<0.05). The results of alkaline phosphatase staining showed that ALP staining intensity and area in the si-ANGPT4 group were significantly lower than those in the negative control. Alizarin red S staining showed that the formation of calcium nodules in the si-ANGPT4 group was significantly lower than that in the negative control. Conclusion ANGPT4 was expressed in odontoblasts and sub-odontoblastic cell-rich zone of human premolars. ANGPT4 may be a factor to promote the odontogenic differentiation of hDPSCs.