OBJECTIVE To investigate the correlation of serum P-Tau protein and β-amyloid protein expression levels with obstructive sleep apnea syndrome(OSAS)and mild cognitive impairment(MCI)patients,and their diagnostic value.METHODS From December 2020 to December 2023,120 patients with OSAS admitted to Third Hospital of Shijiazhuang were collected as the case group.According to the diagnostic criteria for MCI,patients were grouped into OSAS without MCI group(40 cases)and OSAS with MCI group(80 cases).ELISA method was applied to detect the levels of serum P-Tau protein and β-amyloid protein.Spearman method was applied to analyze the correlation between serum P-Tau protein,β-amyloid protein,and MCI.Multivariate logistic regression was applied to analyze the influencing factors of OSAS patients with MCI.ROC curve was applied to evaluate the diagnostic efficacy of serum P-Tau protein and β-amyloid protein in OSAS patients with MCI.RESULTS The Montreal Cognitive Assessment(MoCA)score in the OSAS with MCI group was obviously lower than that in the OSAS without MCI group(P<0.05).The expression levels of P-Tau protein and β-amyloid protein in the OSAS with MCI group were obviously higher than those in the OSAS without MCI group(P<0.05).The expression levels of serum P-Tau protein and β-amyloid protein in OSAS patients were negatively correlated with MoCA score(r=-0.346,-0.565,P<0.001).Serum P-Tau protein and β-amyloid protein were risk factors for OSAS with MCI(P<0.05).The AUC of the expression levels of serum P-Tau protein,β-amyloid protein,and their combination for OSAS with MCI was 0.751,0.848,and 0.928,respectively.The combined evaluation of the two showed better results(Zcombination-P-Tau protein=4.102,P<0.001;Zcombination-β amyloid protein=2.147,P=0.032).CONCLUSION The expression of serum P-Tau protein and β-amyloid protein is upregulated in OSAS patients with MCI,they are risk factors for the development of MCI in OSAS patients.The combined detection of the two has higher diagnostic efficacy.

Objective To investigate the optimal scanning parameters for cone beam computed tomography(CBCT)of the nasal bone,to achieve low-dose scanning of the nasal bone CBCT.Methods Utilizing Prangmerka CBCT 3D single-tooth sequence,nasal bone scans were performed on two human-equivalent phantoms using two dose protocols,five body types,and five resolutions,resul-ting in 50 scanning sequences.The dose area product(DAP)and volume CT dose index(CTDIvol)were recorded.Objective image quality assessment was conducted by calculating the contrast-to-noise ratio(CNR),signal-to-noise ratio(SNR),noise,and figure of merit(FOM)in region of interest(ROI)set on sagittal images.Subjective scoring was performed using a five-point Likert scale.Differences in radiation dose and image quality among various scanning parameters were compared and analyzed.Results(1)Signifi-cant differences in DAP were observed among different dose modes,body types,and resolutions(P＜0.05),with the lowest DAP values recorded for the XS body type.(2)Statistically significant differences in CNR,SNR,noise,and FOM were found among differ-ent dose modes and resolutions(P＜0.05).The XS body type exhibited the highest SNR and FOM values and the lowest noise.The 200 μm resolution demonstrated the higher CNR value and the highest SNR value,with moderate noise and FOM value.(3)Signifi-cant differences in image quality,contrast,sharpness,and noise were observed among different dose modes,body types,and resolu-tions(P＜0.05).Higher subjective scores were assigned to the 200 μm and 150 μm resolutions,indicating clear anatomical details.Conclusion The scanning parameters of 200 μm resolution combined with an ultra-low-dose protocol for the XS body type achieve a balance between low radiation dose and high image quality,making them suitable for low-dose nasal bone CBCT examinations.

Dengue fever is a mosquito-borne disease prevalent in tropical and subtropical regions, with its prevalence expanding due to increased global travel. The dengue virus, the causative agent of dengue fever, often co-circulates in the form of four distinct serotypes. Cross-reactive antibodies generated during a primary infection pose a significant risk during secondary infections with different serotypes, and fully protective vaccines and antiviral drugs are yet to be developed. Over the past decade, advances in antibody technology have led to the isolation of numerous monoclonal antibodies against dengue virus, with their neutralizing epitopes elucidated through structure-based analyses. This review highlights the key epitopes associated with neutralizing antibodies against dengue virus and discusses their potential applications in vaccine design and therapeutic antibody development. This review helps systematically summarize the progress in dengue virus neutralizing antibody research, providing a theoretical foundation and technical guidance for the development of novel vaccines and antibody therapeutics.
Dengue Virus/immunology* ; Antibodies, Neutralizing/immunology* ; Antibodies, Monoclonal/therapeutic use* ; Dengue/prevention & control* ; Humans ; Antibodies, Viral/immunology* ; Epitopes/immunology* ; Animals ; Dengue Vaccines/immunology*

OBJECTIVE: The present study aimed to evaluate the therapeutic effect and explore the underlying mechanisms of Longxue Tongluo Capsule (LTC) on ischemic stroke rats. METHODS: Twenty-six rats were randomly divided into four groups, including sham group, sham + LTC group, MCAO group, and MCAO + LTC group. Ischemic stroke rats were simulated by middle cerebral artery occlusion (MCAO), and LTC treatment group were orally administrated with 300 mg/kg of LTC once daily for seven consecutive days. LTC therapy was validated in terms of neurobehavioral abnormality evaluation, cerebral infarct area, and histological assessments. The plasma metabolome comparisons amongst different groups were conducted by UHPLC-Q Exactive MS in combination with subsequent multivariate statistical analysis, aiming to finding the molecules in respond to the surgery or LTC treatment. RESULTS: Intragastric administration of LTC significantly decreased not only the neurobehavioral abnormality scores but also the cerebral infarct area of MCAO rats. The interstitial edema, atrophy, and pyknosis of glial and neuronal cells occurred in the infarcted area, core area, and marginal area of cerebral cortex were improved after LTC treatment. A total of 13 potential biomarkers were observed, and Youden index of 11 biomarkers such as LysoPC, SM, and PE were more than 0.7, which were involved in neuroprotective process. The correlation and pathway analysis showed that LTC was beneficial to ischemic stroke rats via regulating glycerophospholipid and sphingolipid metabolism, together with nicotinate and nicotinamide metabolism. Heatmap and ternary analysis indicated the synergistic effect of carbohydrates and lipids may be induced by flavonoid intake from LTC. CONCLUSION The present study could provide evidence that metabolomics, as systematic approach, revealed its capacity to evaluate the holistic efficacy of TCM, and investigate the molecular mechanism underlying the clinical treatment of LTC on ischemic stroke.

Objective:To compare the differences in radiation dose and image quality between cone-beam CT (CBCT) and multi-slice spiral CT (MSCT) applied to atlantoaxial spine imaging.Methods:Head and neck phantom was scanned at 30 exposure parameter combinations using Pramerica CBCT scanner and 15 parameter combinations using Toshiba 320-row MSCT. The effective dose ( E) of CBCT was calculated based on the Monte Carlo dose estimation software PCXMC, the E value of MSCT was obtained by multiplying the dose length product (DLP) by the related factor. t-test for two independent samples or Wilcoxon rank sum test were used for comparison of radiation dose and subjective and objective image quality between two modalities. The subjective evaluation was a 5-point subjective scale using double-blind method for edge sharpness, contrast, soft tissue level, and artifacts of the images. The signal and noise in the region of interest (ROI) were measured and the contrast signal-to-noise ratio (CNR) was calculated. Results:For radiation dose, the volumetric dose index and E values of 2.9 mGy and 27.61 μSv for CBCT were lower than those of 8.8 mGy and 433.16 μSv for MSCT, and the differences were statistically significant( z=-3.05, -5.25, P<0.05). For objective evaluation of image quality, the noise and CNR were 27.74 HU and 3.69 in CBCT group, 7.84 HU and 27.1 in MSCT group. The difference between them were statistically significant( z=-5.39, -5.42, P<0.05). The overall image quality, contrast and artifact scores of the CBCT group were 3.5, 3.0 and 5 were higher than those of the MSCT group at 2.0, 2.0, and 4.0, respectively ( z=-2.32, -2.46, -3.31, P<0.05). Conclusions:Both atlantoaxial CBCT and MSCT scans provide image quality that meets diagnostic requirements. Compared to MSCT, CBCT atlantoaxial scans can effectively reduce radiation dose according to the principle of optimization of radiation protection.

A total of 6 patients were treated with surface knee joint prosthesis combined with 3D-printed customized bionic tibial block for reconstruction of bone defect after giant cell tumor (GCT) in proximal tibia (1 male and 5 females, aged 50, 40, 68, 53, 35, 42, respectively). 3 patients with primary and 3 patients with recurrence of GCT. After resection of the tumor, the bone defect was filled with 3D-printed block combined with surface knee prosthesis, the surrounding ligaments were reconstructed with microporous structure and artificial mesh. All cases were followed up for 60, 90, 60, 60, 75, and 50 months, respectively. During the follow-up, there was no local recurrence, no radiolucent lines around prosthesis, and no signs of loosening. The clinical scores of the American Knee Society Score (KSS) were 87, 92, 85, 90, 95 and 78. The functional scores were 70, 100, 70, 100, 100 and 80 respectively. Musculoskeletal Tumor Society Score (MSTS) were 27, 28, 26, 26, 26, 27, respectively. Surface knee prosthesis combined with bionic block can effectively fill the bone defect after resection of GCT in proximal tibia, achieve anatomical and functional reconstruction of knee joint.

Objective To explore the nursing effect of modified prone position and traditional prone position in the skin protection of patients with prone position in ICU. Methods A total of 60 ICU patients with prone position treatment were selected in June 2014 to May 2015. According to the digital method the patients were randomly divided into the control group and the experimental group with 30 cases in each.The control group adopted traditional way of prone position with the head and chest pad pushed up. used by patients not pad up way of improvement of prone position. The incidence of skin pressure injury and the incidence of stress in the two groups were compared. Results The incidence of skin pressure injury was 20.0％(6/30) in the experimental group and 66.7％(20/30) in the control group, and the difference was statistically significant (χ2=13.30, P < 0.05). Conclusions Modified prone position has obvious advantages in reducing the incidence of skin pressure ulcer and is suitable for patients with clinical prone position.

Objective To observe the clinical effect of minimally invasive vitreoretinal (MIV) surgery combined with a modified suprachoroidal drainage surgery for retinal detachment associated with choroidal detachment (RRDCD).Methods A prospective clinical study.A total of 27 patients (27eyes) diagnosed as RRDCD were recruited in this study.There were 16 males and 11 females,with an average of (53.67± 14.82) years.The mean intraocular pressure (IOP) was (8.2± 2.1) mmHg (1 mmHg=0.133 kPa) and best corrected visual acuity (BCVA) of minimum resolution angle logarithm (logMAR) was 1.87±0.58.All subjects underwent 23G MIV combined a modified suprachoroidal drainage surgery,which 23G stab knife and 1 ml syringe needle were used for surgery.The visual outcome,IOP,rate of retinal reattachment and complications were comparatively analyzed preoperatively and postoperatively.Results At 1 day,10 days,1 month and 3 months after surgery,the average of logMAR BCVA were 1.62 ± 0.67,1.51 ± 0.63,1.39 ± 0.54,1.32± 0.56 and the mean of IOP were (13.47 ± 5.06),(14.43 ± 4.09),(14.89 ± 4.30),(15.38 ± 3.37) mmHg,respectively.There were significant differences of logMAR BCVA and IOP between before and after surgery (F=6.19,15.21;P＜0.05).Retinal reattachments were achieved in 27 eyes (100％) at 1 day and 10 days after surgery.At 1 month and 3 months after surgery,the rate of retinal reattachment were 88.89％ (24 eyes) and 85.19％ (23 eyes),respectively.No severe complications such as endophthalmitis and choroidal hemorrhage were found at follow-up visits.Conclusion MIV combined with a modified suprachoroidal drainage surgery is an effective and safe treatment for RRDCD,which can promote retina tear closure,improve visual acuity.

Objective To study the impact of interposed abdominal pulling-pressing cardiopulmonary resuscitation (IAPP-CPR) for patients with cardiac arrest (CA). Methods A prospective study was conducted. A total of 122 CA patients admitted to Department of Emergency of Shandong Provincial Mining Industry Group Company Central Hospital from July 2013 to December 2017 were enrolled. They were divided into standard cardiopulmonary resuscitation (S-CPR) group (n = 62) and IAPP-CPR group (n = 60) according to order of admission. The patients in S-CPR group received external cardiac compression, open airway, endotracheal intubation, mechanical ventilation, routine drug rescue, and defibrillation when ventricular fibrillation was found. And the patients in IAPP-CPR group received the IAPP-CPR on the basis of the routine chest compression. During the relaxation period, the patients were subjected to abdominal lifting and compressing with amplitude of 4-5 cm, frequency of 100 times/min, and the time ratio of lifting to compressing was 1:1. The data of demographics and clinical signs of patients were collected. The markers of respiratory and circulatory performance of all patients after CPR were determined. The rates of restoration of spontaneous circulation (ROSC), successful resuscitation, and the prognosis were recorded. With the success of CRP as the dependent variable, the factors with statistical significance showed by univariate analysis were used as the independent variable to carry out two classification Logistic regression analysis for screening the influence factors of CPR success. Receiver operating characteristic (ROC) curve was plotted to analyze the predictive value of various factors on the success of CPR. Results 122 patients were enrolled in the analysis. Compared with the S-CPR group, heart rate (HR), mean arterial pressure (MAP), arterial partial pressure of oxygen (PaO2), and end-tidal carbon dioxide partial pressure (PETCO2) were significantly increased at 30 minutes after CPR in IAPP-CPR group [HR (bpm): 66.3±11.5 vs. 53.1±12.6, MAP (mmHg, 1 mmHg = 0.133 kPa): 65.4±6.5 vs. 53.2±5.4, PaO2(mmHg): 77.7±11.8 vs. 61.8±14.3, PETCO2(mmHg):45.5±9.6 vs. 31.8±8.2, all P < 0.05], and arterial partial pressure of carbon dioxide (PaCO2) and lactic acid (Lac) were significantly lowered [PaCO2(mmHg): 46.7±6.2 vs. 57.9±9.5, Lac (mmol/L): 2.1±1.5 vs. 4.4±2.2, both P < 0.05]. The time of CA to ROSC in IAPP-CPR group was significantly shorter than that in S-CPR group (minutes: 6.3±1.8 vs. 11.2±1.4, P < 0.05), the ROSC rate and CPR success rate were significantly higher than those in S-CPR group [ROSC rate: 61.7% (37/60) vs. 43.5% (27/62), CPR success rate: 40.0% (24/60) vs. 21.0% (13/62), both P < 0.05], and 24-hour survival rate and survival and discharge rate of patients were significantly higher than those in the S-CPR group [24-hour survival rate: 46.7% (28/60) vs. 29.0% (18/62), survival and discharge rate: 20.0% (12/60) vs. 11.3% (7/62), both P < 0.05]. Logistic regression analysis showed that PaO2, PaCO2 and PETCO2 were the factors that affect the success of CPR [PaO2: β= -3.76, odds ratio (OR) = 0.23, 95% confidence interval (95%CI) = 0.12-0.86, P = 0.031; PaCO2:β=1.41,OR=4.09,95%CI=1.70-9.82,P=0.002,PETCO2:β=0.78,OR=2.18,95%CI=1.42-3.35,P=0.000]. ROC curve analysis showed that the above three factors had good predictive value for the success of CPR. The predictive value of PaCO2 and PETCO2 were better, the area under ROC curve (AUC) was 0.93 and 0.92, respectively, when the cut-off values was 46.7 mmHg and 48.8 mmHg, the sensitivity was 92.0%, 88.0%, respectively, and the specificity was both 94.3%. Conclusions PaO2, PaCO2 and PETCO2 are the factors that influence the success of CPR. PaCO2 and PETCO2 have great value in predicting the success of CPR. Compared with the S-CPR group, IAPP-CPR group results in better hemodynamic and pulmonary ventilation effects, and remarkably improve ROSC and successful resuscitation. IAPP-CPR has obvious clinical value for CA patients.