Fucoxanthin is a pigment found in plants and animals such as algae， marine plankton and aquatic shellfish， and holds significant potential for development in the pharmaceutical field. This review introduces the anti-inflammatory， antioxidant， anticancer， anti-obesity， and other pharmacological effects of fucoxanthin， as well as recent advances in drug design research. It was found that fucoxanthin can exert anti-inflammatory and antioxidant effects through mechanisms such as activating AMP- activated protein kinase related signaling pathways， regulating the expression of inflammatory factors， altering microbial stability， thereby improving conditions such as metabolic associated fatty liver disease and colitis. It can exert selective antitumor effects through multi-target synergistic actions； and it was also found that it can exert anti-obesity effects by regulating the intestinal microbiota. Its characteristic functional groups （such as hydroxyl and epoxy groups） possess target specificity and reversible inhibitory properties， making it a suitable template for guiding the design and development of novel drugs， thereby providing new insights for breaking through the limitations of traditional drug design.

Objective:Proximal femur tumor resection often leads to hip joint instability and functional loss.Various methods have been clinically applied to repair hip joint soft tissue function,but deficiencies remain.This study aims to evaluate the advantages and disadvantages of the ligament advanced reinforcement system(LARS)tumor tube in assisting soft tissue function reconstruction in patients undergoing tumor type artificial hip replacement surgery. Methods:This study included 85 patients(41 males,44 females)with proximal femoral tumors treated at the Xiangya Bone Tumor Treatment Center from January 2012 to January 2022,aged 10 to 79(38.5±18.2)years.Among them,13 cases had benign aggressive tumors,45 had primary malignant bone tumors,and 27 had bone metastases.Clinical data,imaging data,and intraoperative photos were collected.Patients were followed up and postoperative functional evaluations were conducted using the Musculoskeletal Tumor Society(MSTS)scoring system and Harris hip joint scoring system to assess limb function and hip joint function. Results:Preoperative pathological fractures were present in 37 cases(43.5％),with a lesion length of(9.4±2.9)cm.Among non-metastatic tumor patients,7 experienced postoperative recurrence,including 6 cases of osteosarcoma and 1 case of fibrosarcoma.Pulmonary metastases occurred in 9 osteosarcoma patients.Five patients required reoperation due to postoperative complications,including 3 cases of deep vein thrombosis,1 case of giant cell granuloma,and 1 case of prosthesis infection.Postoperatively,5 patients exhibited Trendelenburg gait,and 6 had leg length discrepancies.The postoperative MSTS score was 26.7±1.4,and the Harris score was 89.6±5.3. Conclusion:The LARS tumor tube can effectively assist in reconstructing the soft tissue function of the hip joint and greatly reduce postoperative complications,making it an effective technical improvement in joint function reconstruction in tumor type artificial hip replacement surgery.

ObjectiveThis study aims to investigate the effectiveness and potential mechanism of Erxian Decoction （二仙汤） for late-onset depression （LOD）. MethodsForty Wistar male rats of 7-8 weeks were divided into 20 each of normal group and youth depression group. Sixty Wistar male rats of 20 months were divided into 20 each of elder group， LOD group and Erxian Decoction group. The rats in youth depression group were modelled with chronic unpredictable mild stress （CUMS） for 6 weeks to build a depression model， and the elder rats in LOD group and Erxian Decoction group were modelled with CUMS for 6 weeks to build a LOD model， with no interventions in the normal group and the elder group. Gastric administration was carried out at the same time of modelling， rats in Erxian Decoction group were given 8 g/（kg·d） of Erxian Decoction by gavage， and rats in the normal group， youth depression group， elder group， and LOD group were given 4 ml/（kg·d） of pure water by gavage， for 6 weeks in each group. Sugar water preference experiment and forced swimming experiment were used to evaluate the depression-like behaviour of rats， absent field experiment was used to evaluate the spontaneous activity ability of rats， and T-maze experiment was used to evaluate the cognitive function of rats； Western blot assay was used to detect neuronal nuclei （NeuN）， nestin， doublecortin （DCX） in hippocampal tissue， and zonula occludens-l （ZO-1）， folate receptor α （FRα）， reduced folate carrier （RFC）， and protoncoupledfolate transporter （PCFT） protein expression in choroid plexus； immunofluorescence was used to detect the number of double-positive cells for Ki-67/nestin， the number of double-positive cells for 5-bromodeoxyuracil nucleoside （BrdU）/DCX in hippocampal dentate gyrus， and the protein expression of ZO-1， FRα， RFC， and PCFT in choroid plexus tissues； ELISA technique was used to detect plasma， cerebrospinal fluid， 5-methyltetrahydrofolate （5-MTHF） in hippocampal tissues； Pearson correlation analysis was used to correlate the 5-MTHF content in cerebrospinal fluid and hippocampal tissues and the expression of nestin， DCX， and NeuN proteins in hippocampal tissues of rats in youth depression group and LOD group. ResultsCompared with normal group， rats in youth depression group and LOD group showed reduced sugar water preference， reduced total distance travelled in the absent field， reduced number of times through the grid， prolonged forced swimming immobilisation， reduced hippocampal NeuN， nestin and DCX protein expression， reduced number of Ki-67/nestin double-positive cells in hippocampal dentate gyrus， reduced number of BrdU/DCX double-positive cells in hippocampal dentate gyrus， and reduced expression of ZO-1 and FRα proteins and fluorescence intensity （P＜0.05 or P＜0.01）； the correct rate of T-maze on days 3 and 4 in the rats of youth depression group and on days 2 to 4 in the rats of LOD group significantly decreased， and the content of 5-MTHF in the cerebrospinal fluid and hippocampal tissues of the rats of LOD group significantly decreased as well （P＜0.05 or P＜0.01）. Compared with youth depression group， rats in LOD group showed a decrease in total distance travelled in absenteeism， number of times through the grid， a significant decrease in the correct rate of the T-maze on day 1-4， a decrease in NeuN， nestin， DCX protein expression of hippocampal tissue and the number of Ki-67/nestin double-positive cells， BrdU/DCX double-positive cells of hippocampal dentate gyrus （P＜0.05 or P＜0.01）. Compared with LOD group， rats in Erxian Decoction group had elevated sugar-water preference and total distance travelled in absenteeism and number of times through the grid， shorter forced swimming immobility time， significantly higher correct rate of the T-maze on day 3-4， elevated expression of NeuN， nestin， and DCX proteins in hippocampal tissues， increased number of Ki-67/nestin double-positive cells and BrdU/DCX double-positive cells in hippocampal dentate gyrus， and increased 5-MTHF content in cerebrospinal fluid and hippocampal， and ZO-1， FRα， RFC， PCFT protein expression and fluorescence intensity increased in choroid plexus （P＜0.05 or P＜0.01）. Correlation analysis showed that there was a positive correlation between 5-MTHF content in cerebrospinal fluid （r = 0.466）， hippocampal tissue （r = 0.522） and nestin expression in hippocampal tissue （P＜0.05）. ConclusionErxian Decoction could improve depressive-like behaviour and cognitive impairment in LOD model rats， and its mechanism may promote hippocampal neurogenesis by alleviating structural damage to the choroid plexus of the brain tissue， and improving impaired choroid plexus folate transport.

Periodontitis is a common chronic inflammatory disease that causes the periodontal bone destruction and may ultimately result in tooth loss.With the progression of periodontitis,the osteoimmunology microenvironment in periodontitis is damaged and leads to the formation of pathological alveolar bone resorption.CD301b+macrophages are specific to the osteoimmunology microenvironment,and are emerging as vital booster for conducting bone regeneration.However,the key upstream targets of CD301b+macrophages and their potential mechanism in periodontitis remain elusive.In this study,we concentrated on the role of Tim4,a latent upstream regulator of CD301b+macrophages.We first demonstrated that the transcription level of Timd4(gene name of Tim4)in CD301b+macrophages was significantly upregulated compared to CD301b-macrophages via high-throughput RNA sequencing.Moreover,several Tim4-related functions such as apoptotic cell clearance,phagocytosis and engulfment were positively regulated by CD301b+macrophages.The single-cell RNA sequencing analysis subsequently discovered that Cd301b and Timd4 were specifically co-expressed in macrophages.The following flow cytometric analysis indicated that Tim4 positive expression rates in total macrophages shared highly synchronized dynamic changes with the proportions of CD301b+macrophages as periodontitis progressed.Furthermore,the deficiency of Tim4 in mice decreased CD301b+macrophages and eventually magnified alveolar bone resorption in periodontitis.Additionally,Tim4 controlled the p38 MAPK signaling pathway to ultimately mediate CD301b+macrophages phenotype.In a word,Tim4 might regulate CD301b+macrophages through p38 MAPK signaling pathway in periodontitis,which provided new insights into periodontitis immunoregulation as well as help to develop innovative therapeutic targets and treatment strategies for periodontitis.

Objective This study aims to elucidate the structure-activity domain of LBP1C-2 targeting Kvβ.2 through an exploration of the structure-activity relationship.This study may also provide the scientific basis for the development of drug candidate with anti-early-onset dementia activity.Methods After partial acid hydrolysis,various structural fragments were obtained and subjected to monosaccharide composition and molecular weight analysis.Potential target proteins were selected using a protein chip,followed by validation of the targeting specificity of each structural fragment using surface plasmon resonance(SPR)technology.Results Through high-throughput screening using the HuProtTM human protein array,potential target protein Kvβ.2 was identified for LBP1C-2.SPR experiments revealed a strong binding affinity between LBP1C-2 and Kvβ.2 protein,with a binding constant(KD)of 1.9×10-7 M.The various structural fragments of LBP1C-2 exhibited different binding strengths with the target protein Kvβ.2.Among them,the segment LBP1C-2-1I(18.1 k Da)with a molar ratio of rhamose to galecturonic acid of 1:1 showed a binding strength to Kvβ.2 similar to that of the polysaccharide LBP1C-2,with a KD of approximately 3.3×10-7 M.Structural analysis indicates that the structure of LBP1C-2-1I contains 1,2-linked Rha and 1,4-linked GalA which are alternatively linked.The acid-hydrolyzed extracellular portion corresponding to this segment,LBP1C-2-1O may also bind to Kvβ.2.However,compared to other segments,it demonstrated a higher tendency to dissociate from the protein.Knockdown of the KCNAB2 gene(Kvβ.2)in BV2 cells inhibited the uptake of Aβ in BV2 cells,suggesting that protein Kvβ.2 may be a functional protein in the development of Alzheimer's disease.Conclusion LBP1C-2-1I has been identified as the primary active domain through which LBP1C-2 targets Kvβ.2.This suggests that the active domain of LBP1C-2 predominantly resides on the main chain rather than the side chain.This study provides crucial insights for a deeper understanding of the anti-early-onset dementia activity of LBP1C-2 and lays an experimental foundation for the design and development of targeted drugs for anti-early-onset dementia based on Lycium barbarum polysaccharides.

Objective To investigate the therapeutic effect of segmental decompression combined with corrective short-segment fusion surgery for the treatment of degenerative lumbar scoliosis.Methods In total,124 patients with degenerative lumbar scoliosis were selected and divided into short-and long-segment fusion groups using the random number table method,with 62 patients in each group.Posterior short-segment decompression,fixation,and fusion were performed in the short-segment fusion group;the fusion segment was the adjacent lumbar vertebra.Posterior long-segment decompression,fixation,and fusion were performed in the long-segment fusion group;the fusion segments included multiple adjacent lumbar vertebrae.At the 6th month after surgery,the coronal Cobb angle of lumbar convexity,sagittal Cobb angle of lumbar lordosis,intervertebral foramen height,intervertebral space height,intervertebral foramen area,spinal canal area,spinal canal diameter,Japanese Orthopedic Association(JOA)score,Oswestry Disability Index(ODI),degree of pain in the lower back and lower limbs,and postoperative complications were compared between the groups.Results The Cobb angle of the coronal lumbar scoliosis in the short-and long-segment fusion groups was significantly higher than that before surgery(P<0.05).At the 6th month after surgery,the intervertebral foramen height,intervertebral space height,intervertebral foramen area,spinal canal area,and spinal canal diameter in both groups increased,and those in the short-segment fusion group were higher than those in the long-segment fusion group(P<0.05);at the 6th month after the operation,the JOA scores of the short-segment and long-segment fusion groups were higher than those before surgery,and the JOA score of the short-segment fusion group was higher than that of the long-segment fusion group(P<0.05).The ODI score was lower than that before surgery in the short-and long-segment fusion groups,and the ODI score in the short-segment fusion group was lower than that in the long-segment fusion group(P<0.05).At the 6th month after surgery,the pain scores of the lower back and lower limbs in the short-and long-segment fusion groups were significantly higher than those before surgery(P<0.05).There were two cases of dural tears during decompression caused by lamina dura adhesion in the long-segment fusion group,and no serious complications were observed in the short-segment fusion group.Conclusions Both short-and long-segment decompression fixation fusion using a posterior approach can achieve good therapeutic effects for treating degenerative lumbar scoliosis.However,compared to the long-segment fusion group,the short-segment fusion group undergoing short-segment decompression fixation fusion through a posterior approach had a shorter surgical period,lower intraoperative blood loss,better recovery of lumbar function,and a lower risk of postoperative complications.

Objective To explore accuracy and clinical effect of robot-assisted implantation of sacroiliac penetrating screw in orthopedic surgery for posterior pelvic ring fracture.Methods The clinical data of 24 patients with posterior pelvic ring frac-ture treated with robot-assisted sacroiliac penetration screws from August 2022 to August 2023 were retrospectively analyzed,including 10 males and 14 females;aged from 21 to 73 years old with an average of(49.29±14.48)years old;according to Tile pelvic fractures,13 patients were type B and 11 were type C.The effect of screw placement was evaluated according to Gras criteria based on postoperative CT scan results.At the final follow-up,fracture healing was evaluated according to Matta score,and functional recovery was evaluated by Majeed score.Results All patients were followed up for 3 to 13 months with an aver-age of(6.00±3.28)months.Totally 36 sacroiliac penetrating screws,18 S1 penetrating screws,18 S2 penetrating screws were inserted,a total of 29 were excellent and 7 good according to Gras standard.Screw adjustment times was 0.00(0.00,0.75)times.At the final follow-up,Matta score was excellent in 18 patients,5 good and 1 moderate,and the maximum displacement distance was 2.55(0.00,5.65)mm.Majeed score was 84.37±8.38,15 patients were excellent,7 good and 2 moderate.Con-clusion Robot could accurately and safely assist in the placement of sacroiliac joint screws for the treatment of posterior pelvic ring fractures,and promote postoperative functional recovery of patients.

Objective:To compare the clinical efficacy of robot-assisted versus fluoroscopy-assisted sacroiliac screw internal fixation for posterior pelvic ring fractures.Methods:China National Knowledge Infrastructure (CNKI), Wanfang Data, Chinese Medical Journal Full-text Database, PubMed, Web of Science and ScienceDirect were searched for literature on robot-assisted versus fluoroscopy-assisted sacroiliac screw internal fixation for posterior pelvic ring fractures. The search time was from the establishment of each database to March 2023. Meta-analysis was performed on the included literature. The random-effects model was used when the heterogeneity between groups was large, and the fixed-effects model was used when the heterogeneity between groups was small.Results:A total of 15 studies were included in the meta-analysis, including 465 patients in the robot-assisted group and 396 patients in the fluoroscopy-assisted group. Meta-analysis showed that the number of fluoroscopies [ SMD=-3.12, 95% CI (-4.34, -1.89), P<0.001], the number of guide pin adjustments [ SMD=-3.75, 95% CI (-6.77, -0.72), P=0.015], intraoperative blood loss [ SMD=-0.83, 95% CI (-1.18, -0.49), P<0.001], and operative time [ SMD=-2.59, 95% CI (-4.11, -1.08), P<0.001] were smaller than those in the fluoroscopy-assisted group. The rate of excellent screw implantation [ OR=10.13, 95% CI (3.67,27.98), P<0.001] of the robot-assisted was larger than the fluoroscopy-assisted group. There was no significant difference in Majeed functional score [ SMD=0.28, 95% CI (-0.0003, 0.55), P=0.050] and fracture healing time [ SMD=-0.14, 95% CI (-0.46, 0.17), P=0.367] between the two groups. Conclusion:Robot-assisted percutaneous sacroiliac screw fixation for posterior pelvic ring fractures has the advantages of less fluoroscopy, less guide pin adjustment, less intraoperative blood loss, shorter operation time, and higher rate of excellent screw position. However, there is no difference in Majeed score and fracture healing time between robot-assisted percutaneous sacroiliac screw fixation and fluoroscopy-assisted percutaneous sacroiliac screw fixation.

Chronic kidney disease (CKD) is an important global public health problem that greatly threatens population health. Application of risk prediction model is a crucial way for the primary prevention of CKD, which can stratify the risk for developing CKD and identify high-risk individuals for more intensive interventions. By now, more than twenty risk prediction models for CKD have been developed worldwide. There are also four domestic risk prediction models developed for Chinese population. However, none of these models have been recommended in clinical guidelines yet. The existing risk prediction models have some limitations in terms of outcome definition, predictors, strategies for handling missing data, and model derivation. In the future, the applications of emerging biomarkers and polygenic risk scores as well as advances in machine learning methods will provide more possibilities for the further improvement of the model.
Humans ; Renal Insufficiency, Chronic ; Risk Factors ; Biomarkers

This study aimed to compare the predictive value of six selected anthropometric indicators for benign prostatic hyperplasia (BPH). Males over 50 years of age who underwent health examinations at the Health Management Center of the Second Xiangya Hospital, Central South University (Changsha, China) from June to December 2020 were enrolled in this study. The characteristic data were collected, including basic anthropometric indices, lipid parameters, six anthropometric indicators, prostate-specific antigen, and total prostate volume. The odds ratios (ORs) with 95% confidence intervals (95% CIs) for all anthropometric parameters and BPH were calculated using binary logistic regression. To assess the diagnostic capability of each indicator for BPH and identify the appropriate cutoff values, receiver operating characteristic (ROC) curves and the related areas under the curves (AUCs) were utilized. All six indicators had diagnostic value for BPH (all P ≤ 0.001). The visceral adiposity index (VAI; AUC: 0.797, 95% CI: 0.759-0.834) had the highest AUC and therefore the highest diagnostic value. This was followed by the cardiometabolic index (CMI; AUC: 0.792, 95% CI: 0.753-0.831), lipid accumulation product (LAP; AUC: 0.766, 95% CI: 0.723-0.809), waist-to-hip ratio (WHR; AUC: 0.660, 95% CI: 0.609-0.712), waist-to-height ratio (WHtR; AUC: 0.639, 95% CI: 0.587-0.691), and body mass index (BMI; AUC: 0.592, 95% CI: 0.540-0.643). The sensitivity of CMI was the highest (92.1%), and WHtR had the highest specificity of 94.1%. CMI consistently showed the highest OR in the binary logistic regression analysis. BMI, WHtR, WHR, VAI, CMI, and LAP all influence the occurrence of BPH in middle-aged and older men (all P ≤ 0.001), and CMI is the best predictor of BPH.
Middle Aged ; Male ; Humans ; Aged ; Prostatic Hyperplasia ; Obesity/epidemiology* ; Body Mass Index ; China/epidemiology* ; Waist-Height Ratio ; ROC Curve ; Waist Circumference ; Risk Factors