Surface plasmon resonance （SPR） sensor is an optical detection technique enables real-time and dynamic monitoring of biological samples. SPR-based biosensors have remarkable characteristics such as label-free detection and high sensitivity, making them important tools for studying molecular interactions. The recognition element, which plays a critical role in SPR sensors,which could specifically identify and capture of target analytes, closely influencing the selectivity performance of the sensor. The progress on SPR sensors in pharmaceutical research were reviewed, which focused on the application of recognition elements such as antibodies, aptamers, molecularly imprinted polymers, and metal nanoparticles.

Objective To explore potential predictive biomarkers for preeclampsia by analyzing the expression and characteristics of vascular-related inflammatory proteins in the serum of preeclamptic pregnant women.Methods A case-control study was conducted from Sep 2017 to Sep 2018 in the Obstetrics and Gynecology Hospital,Fudan University.Preeclamptic pregnant women and normotensive pregnant controls during the same period were recruited.The concentration of 12 vascular inflammation-related proteins in the patients'serum was determined by multiplex flow cytometry.The vascular-related inflammatory molecules were subjected to differential analysis by non-parametric t-test to obtain preeclampsia-related vascular inflammatory proteins.Finally,high-risk preeclampsia pregnancy serum samples from the biobank were retrieved.Serum concentrations of preeclampsia-related vascular inflammatory proteins were determined,and receiver operating characteristic(ROC)curve analysis was conducted for preliminary predictive assessment of preeclampsia.Results This study conducted a quantitative analysis of serum vascular inflammatory proteins in 39 cases of preeclampsia and 43 cases of control pregnant women,detecting 10 vascular inflammatory proteins expressed in maternal serum.Among these,myoglobin and vascular cell adhesion molecule-1(VCAM-1)exhibited significant elevation in the serum of preeclamptic pregnant women,while matrix metalloproteinase-9(MMP-9)showed a marked decrease.ROC curve analysis revealed that in 96 high-risk early pregnancy women,the area under the curve(AUC)for VCAM-1 reached 0.802,whereas myoglobin and MMP-9 did not significantly predict the occurrence of preeclampsia.Conclusion Preeclampsia patients exhibit abnormal expression of serum inflammatory proteins,among which VCAM-1 may be a potential biological marker for early pregnancy preeclampsia risk prediction.

Objective To summarize the treatment of cervical cancer patients diagnosed before 34 weeks of gestation who chose to continue pregnancy,and to provide clinical experience for improving maternal and fetal outcomes.Methods Clinical data of pregnant women with cervical cancer admitted to the Obstetrics and Gynecology Hospital,Fudan University from Jan 2013 to Feb 2024 were collected and analyzed.Treatment of patients diagnosed before 34 weeks of gestation and chose to continue pregnancy was summarized.Outcomes of patients and newborn were followed up.Results A total of 15 patients were enrolled with a median age of 34 years old.Nine cases(9/15)represented clinical symptom of abnormal vaginal bleeding,14 cases(14/15)of patients were diagnosed in the middle or late stages of pregnancy,12 cases(12/15)diagnosed with tumor size of more than 2 cm,13 patients(13/15)infected HPV type 16 or 18.The main pathological type was squamous cell carcinoma(9/15).Regarding therapy,one patient with stage Ⅰa1 was under observation and underwent a caesarean section and total hysterectomy at 35 weeks of gestation due to premature rupture of membrane and a scarred uterus.For the other patients with 14 stage Ⅰb,lymph node metastasis was excluded by pelvic lymphadenectomy or MRI,and then neoadjuvant chemotherapy was administered.Termination of pregnancy and standardized treatment for cervical cancer were provided after 34 weeks of gestation.One patient's pathology was upgraded to stage Ⅱa1 after surgery.Up to follow-up,13 out of 15 patients had survived without tumors.The average gestational age of newborns was(35.0±1.5)weeks,and the average birth weight was(2 345.33±431.44)g.Blood tests conducted one day after delivery of the newborns revealed that:8 newborns(8/15)had hypoleukocyte and one newborn(1/15)had anemia.After short-term hospitalization and supportive treatment,all newborns'progress was favorable.Conclusion For pregnant patients with stage Ⅰb cervical cancer diagnosed before 34 weeks of gestation,postponing termination to after 34 weeks of gestation through neoadjuvant chemotherapy and then giving standardized treatment for cervical cancer was safe with favorable maternal and fetal prognosis.

Objective To investigate the improvement effect and mechanism of ligustilide on lipopolysaccharide(LPS)-induced renal podocyte injury in mice.Methods(1)In vivo experiment:the mice were randomly divided into blank control group,LPS induction group,ligustilide low-and high-dose groups,ligustilide high-dose+pcDNA-NC(RhoA negative control)group,ligustilide high-dose+pcDNA-RhoA(RhoA overexpression)group.Except for the blank control group,mice in other groups were subjected to LPS-induced acute kidney injury(AKI)model.After the intervention,the levels of blood urea nitrogen(BUN)and creatinine(Cr)in the serum of mice were detected,the pathological changes of kidney tissue in mice were observed by periodic acid-schiff(PAS)staining,and the protein expressions of RhoA and Rho-associated coiled-coil forming protein kinase(ROCK)in kidney tissue were detected by Western Blot.(2)In vitro experiments:the cultured mouse podocyte MPC5 was divided into blank control group,LPS induction group,ligustilide low-and high-dose groups,ligustilide high-dose+pcDNA-NC group,ligustilide high-dose+pcDNA-RhoA group.Cell count kit 8(CCK-8)method was used to detect the proliferation activity of podocytes,flow cytometry was used to detect apoptosis,phalloidin staining method was used to analyze cytoskeleton,and Western Blot was used to detect the expressions of RhoA and ROCK proteins in the cells.Results Compared with the blank control group,the levels of BUN and Cr in serum,renal tissue injury score,and the protein expressions of RhoA and ROCK in the LPS-induced group were increased(P＜0.05).Compared with the LPS-induced group,the levels of BUN and Cr in serum,renal tissue injury score,and the expression levels of RhoA and ROCK in the low-and high-dose ligustilide groups were decreased(P＜0.05).Compared with the blank control group,the cell proliferation activity,F-actin fluorescence intensity,RhoA and ROCK expressions in the LPS-induced group were decreased(P＜0.05),and the apoptosis rate was increased(P＜0.05).Compared with the LPS-induced group,the cell proliferation activity,F-actin fluorescence intensity,RhoA and ROCK expressions were increased(P＜0.05),and the apoptosis rate was decreased in the low-and high-dose ligustilide groups(P＜0.05).Overexpression of RhoA reversed the alleviation effect of ligustilide on LPS-induced renal tissue and podocyte injury in mice(P＜0.01).Conclusion Ligustilide may improve LPS-induced renal podocyte injury in mice by inhibiting RhoA/ROCK signaling pathway.

The incidence of osteoporotic thoracolumbar vertebral fracture (OTLVF) in the elderly is gradually increasing. The kyphotic deformity caused by various factors has become an important characteristic of OTLVF and has received increasing attention. Its clinical manifestations include pain, delayed nerve damage, sagittal imbalance, etc. Currently, the definition and diagnosis of OTLVF with kyphotic deformity in the elderly are still unclear. Although there are many treatment options, they are controversial. Existing guidelines or consensuses pay little attention to this type of fracture with kyphotic deformity. To this end, the Lumbar Education Working Group of the Spine Branch of the Chinese Medicine Education Association and Editorial Committee of Chinese Journal of Trauma organized the experts in the relevant fields to jointly develop Clinical guidelines for the diagnosis and treatment of osteoporotic thoracolumbar vertebral fractures with kyphotic deformity in the elderly ( version 2024), based on evidence-based medical advancements and the principles of scientificity, practicality, and advanced nature, which provided 18 recommendations to standardize the clinical diagnosis and treatment.

Osteoporosis is an important cause of internal fixation loosening after spinal surgery.Cement-augmented pedicle screw instru-mentation(CAPSI)technique is the most widely used technique in clinical practice to improve the stability of pedicle screw,mainly applied in osteoporosis and revision surgery,which included conventional solid pedicles crews and fenestrated/cannulated pedicle screws technique.CAPSI technique may cause cement leakage and pulmonary embolism,and there is no consensus on its indications or technical points.Therefore,this article reviews the research progress of CAPSI,in order to provide relevant reference for clinical practice.

Objective:To establish and validate a gallstones classification method based on deep learning.Methods:A total of 618 gallstones samples were collected from East Hospital Affiliated to Tongji University, and 1 023 high-definition cross-sectional gallstones profile images were captured to construct a cross-sectional gallstones profile image dataset. Based on the traditional eight-category gallstones classification method, a lightweight network model, MobileNet V3, was trained using deep learning and transfer learning methods. The classification performance of MobileNet was evaluated using a confusion matrix with metrics such as accuracy rate, precision rate, F1 score, and recall rate. The MobileNet V3 was improved and further validated using accuracy and loss values.Results:The accuracy rate (94.17%), precision rate (94.03%), F1 score (92.96%) and recall rate (92.99%) of the improved MobileNet V3 model were better than other networks. The improved MobileNet V3 model achieved the highest accuracy rate (94.17%) in gallstones profile classification and was validated by the test set. The confusion matrix showed a weighted average of accuracy rate (92.0%), precision rate (92.6%), and F1 score (92.2%) for each category of gallstones.Conclusions:Based on deep learning, a high-accuracy gallstones classification method is proposed, which provides a new idea for the intelligent identification of gallstones.

Objective:To observe the relationship between the distribution of chromosome 9p21 region rs10757274,rs7044859,rs4977574 and rs496892 gene polymorphisms and susceptibility to cerebral infarction in Uyghur patients with acute non-cardiogenic cerebral infarction(ANCCI)in Xinjiang.Methods:A total of 178 Uyghur ANCCI pa-tients who admitted to Second People's Hospital of Kashgar Prefecture of Xinjiang Uygur Autonomous Region from Jan 2012 to Dec 2015 were selected,including 117 cases with and 61 cases without carotid plaque.Gene polymor-phism analysis and comparison of rs10757274,rs7044859,rs4977574,rs496892 loci in chromosome 9p21 region of two groups was performed by applying polymerase chain reaction-high temperature ligase detection reaction(PCR-LDR)technique.Results:Compared with no carotid plaque group,there was significant rise in G allele frequen-cy of rs4977574(44.3％vs.53.0％),and significant reduction in AA genotype frequency of rs4977574(37.7％vs.20.5％)in carotid plaque group(P＜0.05 both).The risk of carotid plaque in patients carrying GG genotype and AG genotype of rs4977574 was 2.476 and 2.285 times of that of those with AA genotype.Compared with non-GG genotype group,there were significant rise in proportions of diabetes(16.3％vs.30.2％),small vessel disease(42.2％vs.60.5％)and systolic blood pressure[(135.91±20.89)mmHg vs.(143.57±20.34)mmHg]in GG genotype group(P＜0.05 all).Conclusion:The rs4977574 gene polymorphism in chromosome 9p21 is associated with susceptibility to developing carotid plaque in Uyghur patients with acute non-cardiogenic cerebral infarction,and GG-pure mutations at this locus may predict an increased risk of small vessel disease.

Lateral flow immunochromatography assay is a new instantaneous detection technology that employs a chromatographic membrane and labeling materials for detection.This detection technology is convenient,fast,and inexpensive,and is therefore widely used in a number of different fields,such as biomedicine,disease detection,food safety,environmental protection,and so on.Traditional lateral flow immunochromatography assay relied on visual observation and provided only qualitative or semi-quantitative results.By utilizing various types of markers and sensitive detection devices,lateral flow immunochromatography assay enables quantitative and multi-component detection of the analytes.The research progress on the lateral flow immunoassay detection system and its current applications in the context of recognition elements,labeling materials,and detection instruments were reviewed in this paper.

Objective: To investigate the effect of the AML1-ETO (AE) fusion gene on the biological function of U937 leukemia cells by establishing a leukemia cell model that induces AE fusion gene expression. Methods: The doxycycline (Dox) -dependent expression of the AE fusion gene in the U937 cell line (U937-AE) were established using a lentivirus vector system. The Cell Counting Kit 8 methods, including the PI and sidanilide induction, were used to detect cell proliferation, cell cycle-induced differentiation assays, respectively. The effect of the AE fusion gene on the biological function of U937-AE cells was preliminarily explored using transcriptome sequencing and metabonomic sequencing. Results: ①The Dox-dependent Tet-on regulatory system was successfully constructed to regulate the stable AE fusion gene expression in U937-AE cells. ②Cell proliferation slowed down and the cell proliferation rate with AE expression (3.47±0.07) was lower than AE non-expression (3.86 ± 0.05) after inducing the AE fusion gene expression for 24 h (P<0.05). The proportion of cells in the G(0)/G(1) phase in the cell cycle increased, with AE expression [ (63.45±3.10) %) ] was higher than AE non-expression [ (41.36± 9.56) %] (P<0.05). The proportion of cells expressing CD13 and CD14 decreased with the expression of AE. The AE negative group is significantly higher than the AE positive group (P<0.05). ③The enrichment analysis of the transcriptome sequencing gene set revealed significantly enriched quiescence, nuclear factor kappa-light-chain-enhancer of activated B cells, interferon-α/γ, and other inflammatory response and immune regulation signals after AE expression. ④Disorder of fatty acid metabolism of U937-AE cells occurred under the influence of AE. The concentration of the medium and short-chain fatty acid acylcarnitine metabolites decreased in cells with AE expressing, propionyl L-carnitine, wherein those with AE expression (0.46±0.13) were lower than those with AE non-expression (1.00±0.27) (P<0.05). The metabolite concentration of some long-chain fatty acid acylcarnitine increased in cells with AE expressing tetradecanoyl carnitine, wherein those with AE expression (1.26±0.01) were higher than those with AE non-expression (1.00±0.05) (P<0.05) . Conclusion: This study successfully established a leukemia cell model that can induce AE expression. The AE expression blocked the cell cycle and inhibited cell differentiation. The gene sets related to the inflammatory reactions was significantly enriched in U937-AE cells that express AE, and fatty acid metabolism was disordered.
Humans ; U937 Cells ; RUNX1 Translocation Partner 1 Protein ; Leukemia/genetics* ; Core Binding Factor Alpha 2 Subunit/genetics* ; Oncogene Proteins, Fusion/genetics* ; Leukemia, Myeloid, Acute/genetics*