ObjectiveTo delineate imaging findings using an imaging platform and investigate the correlation between MRI characteristics of spinal cord atrophy and clinical diagnosis in children with spinal cord injury (SCI). MethodsImaging data of 150 children with SCI admitted to Beijing Bo'ai Hospital, China Rehabilitation Research Center, from January, 2002 to March, 2024 were collected and imported into the imaging platform. The anteroposterior and transverse diameters of the middle part of the spinal cord at the cross-section with the most severe atrophy were measured, and the relevant indicators of the previous normal spinal cord segment were measured as controls; the radiomic features were extracted. Clinical data of the children including gender, age, cause of injury, sensory level, motor level, spinal cord injury level, injury severity and disease course were collected. ResultsSpinal cord atrophy was identified in 81 cases (54%), among which 78 cases (96%) were American Spinal Injury Association Impairment Scale (AIS) grade A and 3 cases (4%) were AIS grade C. The upper boundary of the spinal cord atrophy site strongly correlated with the injury level, motor level and sensory level (r > 0.8, P < 0.001). ConclusionMore than half of children with SCI may develop secondary spinal cord atrophy, the vast majority of whom suffer from complete spinal cord injury; the upper boundary of spinal cord atrophy is correlated with the injury level.

ObjectiveTo develop a full-process data platform of renal rehabilitation, diagnosis and quality control information. MethodsA hierarchical architectural design was proposed, adhering to clinical pathway models and standardized data protocols. The platform comprehensively covered assessment, intervention, follow-up and quality control for maintenance hemodialysis (MHD) patients. By integrating multidisciplinary resources and standardizing rehabilitation workflows, it delivered standardized and intelligent rehabilitation services. ResultsThe platform achieved standardized and intelligent management of rehabilitation services, effectively improved the physiological function, psychological state and quality of life convenience for MHD patients, while significantly reduced the economic and care burden on patients' families and society. ConclusionThe rehabilitation service model based on a full-process data platform may provide scientific and systematic support for MHD patients.

Traditional development of small protein scaffolds has relied on display technologies and mutation-based engineering, which limit sequence and functional diversity, thereby constraining their therapeutic and application potential. Protein design tools have significantly advanced the creation of novel protein sequences, structures, and functions. However, further improvements in design strategies are still needed to more efficiently optimize the functional performance of protein-based drugs and enhance their druggability. Here, we extended an evolution-based design protocol to create a novel minibinder, BindHer, against the human epidermal growth factor receptor 2 (HER2). It not only exhibits super stability and binding selectivity but also demonstrates remarkable properties in tissue specificity. Radiolabeling experiments with ^99mTc, ⁶⁸Ga, and ¹⁸F revealed that BindHer efficiently targets tumors in HER2-positive breast cancer mouse models, with minimal nonspecific liver absorption, outperforming scaffolds designed through traditional engineering. These findings highlight a new rational approach to automated protein design, offering significant potential for large-scale applications in therapeutic mini-protein development.

Objective:To design a wireless regulation system based on STM 32 single chip microcomputer for three-dimension(3D)water tank,so as to improve the efficiency of physical verification for radiation.Methods:The wireless regulation system of 3D water tank was designed on the basis of STM32F103 single chip microcomputer and ZigBee technique through combined with regulation and control system for conventional 3D water tank,and the indicators of testing performance was also evaluated.Results:The wireless regulation system for 3D water tank can realize remote control to drive the operation of motor.The accuracy error of the detector was less than 0.2 mm along the x axis,y axis and z axis of the water tank.The repetitive error of the designated position was less than 0.1 mm after the detector repetitively reached the specified location along each axis.The vertical error of motion was less than 0.5 mm when the itinerary was less and equal to 200 mm,and this error was less than 1.0 mm when it was greater than 200 mm.Conclusion:The wireless regulation system of 3D water tank based on STM 32 can improve the information and intelligence levels that are measured and verified by ray beam,which is more in line with the requirement of radiation physics for measurement,and it can provide better technical support for the metrological verification of the equipment of nuclear medicine.

As one of the major diseases threatening human health,the early accurate diagnosis and localization of tumors are crucial for formulating effective treatment plans.In recent years,molecular probes(MPs)have made significant progress in the field of biological imaging.With advantages such as high sensitivity,high specificity,and non-invasiveness,they have become a research hotspot in the field of tumor diagnosis and treatment.This paper systematically reviews the applications of MPs in tumor diagnosis and treatment,covering their classifications(such as fluorescent,photoacoustic,chemiluminescent,bioluminescent,and multimodal probes),design strategies(including active/pas-sive targeting mechanisms and the synergistic construction of identification units,imaging units,signal conversion units and treatment units),as well as detection principles.It also focuses on elabo-rating the research progress of MPs based on enzymes,receptors,reactive substances,and tumor microenvironment.Meanwhile,this paper emphasizes the advantages of multifunctional integration and multimodal imaging,and analyzes the challenges faced by MPs in clinical translation(such as biocompatibility and optimization of supporting equipment).It aims to provide ideas for the develop-ment of high-performance MPs and promote the advancement of precise and personalized tumor di-agnosis and treatment.

Objective:To investigate the use of non-vitamin K antagonist oral anticoagulants(NOACs)and their associated comorbidities in patients aged 80 years and older with non-valvular atrial fibrillation(NVAF), as well as to understand the challenges faced by elderly patients receiving NOAC therapy.Methods:We retrospectively enrolled elderly patients(≥80 years old)with NVAF who were treated with NOACs at a hospital in Beijing from January 2018 to August 2023.Patients were categorized into two age groups: 80-89 years and ≥90 years.We collected baseline data, including demographic characteristics, details of atrial fibrillation, comorbidities, laboratory test results, and medication combinations, for descriptive statistical analysis and intergroup comparisons.Results:A total of 695 elderly patients with NVAF receiving NOACs were included in the study, with a median age of 84 years.Among these patients, there were 328 males(47.19%, 328/695)and 422 cases of paroxysmal atrial fibrillation(60.72%, 422/695).The age group of 80-89 years comprised 640 cases(92.09%, 640/695), while the group aged 90 years and above included 55 cases(7.91%, 55/695).The use of NOACs in patients aged 90 and older exhibited an increasing trend over the years.Inter-group comparisons indicated that the ≥90 years group had lower body mass index, longer hospital stays, increased bedridden time, poorer renal function, lower levels of albumin and hemoglobin, and higher D-dimer levels.Inappropriate dosing of DOACs occurred in 49.64%(345/695)of cases, with 90.72%(313/345)receiving doses lower than recommended.Lower-than-recommended doses were more prevalent in the ≥90 years group, while higher-than-recommended doses were more common in the 80-89 years group.Polypharmacy was noted in 61.29%(426/695)of patients.The concurrent use of antiplatelet drugs, rhythm control medications, and ventricular rate control drugs was observed in 12.52%(87/695), 19.57%(136/695), and 54.53%(379/695)of patients, respectively, with no significant differences between groups.Conclusions:Inappropriate dosing and polypharmacy are prevalent issues among elderly NVAF patients.Therefore, it is essential to enhance multidisciplinary collaboration to optimize anticoagulation treatment strategies.

Objective:To investigate multi-system involvement in Kennedy′s disease and its association with disease progression.Methods:We retrospectively reviewed the clinical, laboratory, and electrophysiological data from 48 genetically confirmed patients with Kennedy′s disease at the Department of Neurology, First Medical Center of the Chinese PLA General Hospital, between February 2016 and February 2024. The disease progression rate was calculated based on the functional scores at baseline and follow-up. Correlation analyses and multiple linear regression models were employed to assess the relationships among clinical variables and to identify potential predictors of disease progression.Results:The age of muscle weakness onset ranged from 16 to 66 years (mean 42±11 years), with a diagnostic delay of 5.0 (3.0, 9.8) years. Lower limb weakness was the most common initial symptom in 72.9% (35/48) of patients, and 37.5% (18/48) exhibited non-motor manifestations prior to the onset of weakness. Core motor manifestations included bulbar weakness (89.6%, 43/48) and symmetric proximal limb weakness (83.3%, 40/48), frequently accompanied by gynecomastia (74.2%, 23/31) and sexual dysfunction (64.6%, 31/48). The median CAG repeat length was 43 (42, 46), which showed a significant negative correlation with the age at onset ( r=-0.406, P=0.004). Patients with CAG repeats > 43 had a higher prevalence of sexual dysfunction. Elevated serum muscle enzymes were observed in 97.9% (47/48), and abnormal sex hormone levels were detected in 81.2% (39/48). Sensory neuropathy was present in 68.1% (32/47), with CAG repeat length inversely correlating with compound muscle action potential (CMAP) amplitudes in the median ( β=-0.29; t=-2.27, P=0.029) and ulnar ( β=-0.22; t=-2.23, P=0.031) nerves. Low-frequency repetitive nerve stimulation (RNS) revealed a decrement in 43.3% (13/30) of patients, most commonly affecting the axillary and spinal accessory nerves. The disease progression rate was 1.3±0.3 (range: 0.5-2.0). Furthermore, serum creatine kinase-MB (CK-MB) levels were negatively correlated with disease progression rate ( r=-0.303, P=0.036). Conclusions:Kennedy′s disease presents with diverse initial manifestations and frequent multi-system involvement. Non-motor manifestations may precede muscle weakness, serving as valuable clues for early diagnosis. Widespread sex hormone abnormalities (particularly testosterone/luteinizing hormone dysregulation) support the role of androgen insensitivity in disease pathogenesis. Sensory neuropathies are frequent and not length-dependent. The presence of decremental responses on low-frequency RNS suggests neuromuscular junction dysfunction, which may underlie motor impairment in patients with Kennedy′s disease. Finally, serum CK-MB may serve as a potential biomarker for disease progression.

Objective To investigate the protective effect of Gynostemma pentaphyllum on memory of individuals rapidly ascending to high altitudes.Methods Twenty-one healthy subjects were randomly divided into a G.pentaphyllum food group(n=12)and a control group(n=9).The first group consumed G.pentaphyllum food for seven consecutive days while the control group received placebos.Both groups ascended from the plains to an altitude of 3600 m.Memory function was assessed using the matching memory and sequential memory tests of a cognitive evaluation system on day 1 and day 7 on the plains,and at 24 and 48 h after ascending to the high altitude.Scores of acute mountain sickness symptoms were also recorded.Results After 24 h of stay at the high altitude,the score of headache of the G.pentaphyllum food group was significantly lower than that of the control group(P＜0.05).Cognitive test results showed that the matching memory accuracy and sequential memory accuracy of the control group at 24 and 48 h were significantly lower than those on the plains(P＜0.05).In contrast,the G.pentaphyllum food group performed significantly better than the control group in these metrics(P＜0.05).Conclusion Regular consumption of G.pentaphyllum food can effectively alleviate headache symptoms in individuals rapidly ascending to high altitudes and mitigate the decline in working memory,short-term memory,and memory spans caused by acute hypoxic exposure.

ObjectiveTo examine the relationship between metabolic syndrome (MS) and its key components in granulomatous mastitis (GM), we explored potential pathological mechanisms through the lens of traditional Chinese medicine (TCM), particularly the concept of intermingled phlegm-blood stasis.MethodsIn this retrospective study, we enrolled 172 patients with GM and 164 patients with non-inflammatory benign breast masses. Metabolic indicators (waist circumference [WC], blood lipids, etc.), inflammatory markers (C-reactive protein, interleukin-6, tumor necrosis factor-α), and adipose tissue CD68 expression were measured. Logistic regression was used to analyze risk factors and receiver operating characteristic curves were used to evaluate diagnostic efficacy. The correlation between TCM pathogenesis and biomarkers was also examined.ResultsMS prevalence was significantly higher in the GM group than in the controls (26.16% vs. 6.10%, P .001). Multivariate analysis identified abdominal obesity (WC ≥ 80 cm, odds ratio [OR] = 1.065) and low levels of high-density lipoprotein cholesterol (HDL-C; 1.29 mmol/L, OR = 0.066) as independent risk factors for GM (P .001 for both). Among patients with GM, HDL-C levels were inversely correlated with inflammatory markers (r = −0.341 to −0.440), whereas patients with concurrent MS demonstrated greater CD68 macrophage infiltration (P .001). According to TCM, abdominal obesity corresponds to “spleen deficiency with phlegm-dampness accumulation,” and low HDL-C reflects “deficiency of vital qi,” which collectively lead to phlegm-blood stasis obstruction in the mammary collaterals; this aligns with the key MS driving mechanisms of chronic inflammation and immune dysregulation.ConclusionMS promotes GM development through chronic inflammation and immune dysregulation, with abdominal obesity and low HDL-C levels serving as core risk factors. The TCM theory of intermingled phlegm-blood stasis provides a novel interpretation of the metabolic-inflammatory mechanisms underlying GM. Accordingly, we propose phlegm-resolving and blood-activating strategies as potential therapeutic approaches for metabolic–immune axis regulation.