Clinical features of rhino-orbital-cerebral mucormycosis with bilateral cranial nerves paralyze as the clinical manifestation(report of one case) / 临床神经病学杂志

Objective To investigate the clinical features of rhino-orbital-cerebral mucormycosis(ROCM)with bilateral cranial nerve palsies as the clinical manifestation.Methods The related clinical data about ROCM with bilateral cranial nerve palsy as a clinical manifestation was collected,analyzed as well as discussed in the manuscript.And the relevant literatures were reviewed.Results This patient was a healthy young man with new-onset diabetes and diabetic ketoacidosis.The patient developed rapidly with acute onset,bilateral blindness,blepharoptosis and extraocular muscle paralysis.The presence of mucormycosis was confirmed by CSF second-generation sequencing,fungal fluorescent staining and culture.Although effective antifungal therapy was performed early,but the patient quickly presented with cerebral hemorrhage and herniation.Eventually,the patient died after discharge.Conclusions ROCM is a rare and high-mortality infectious disease.This case indicated that the clinicians should consider the presence of ROCM in patients with diabetes/diabetic ketoacidosis when the bilateral cranial nerves paralysis are the clinical symptom,whicn can not be explained by other lesions.CSF next-generation sequencing is helpful for rapid diagnosis.

A multicenter study on the prognostic value of SPECT myocardial blood flow quantitative technique in patients with intermediate stenoses of coronary arteries / 中华核医学与分子影像杂志

Objective:To investigate the prognostic value of myocardial flow reserve (MFR) measured by SPECT myocardial blood flow (MBF) quantitative technique in patients with intermediate stenoses of coronary arteries.Methods:From September 2019 to May 2021, patients with intermediate stenoses (50% to 80%) identified by invasive coronary angiography in Fuwai Hospital, Chinese Academy of Medical Sciences, Fuwai Center China Cardiovascular Hospital, and TEDA International Cardiovascular Hospital were prospectively included. All patients underwent a one-day rest/stress SPECT myocardial perfusion imaging (MPI) and SPECT MBF quantification. The radioactivity distribution of each segment of the MPI bullseye polar maps were obtained according to the standard 5-point method to obtain the summed stress score (SSS) and the summed difference score (SDS) to determine the existence of abnormality. ROC curve analysis was used to obtain the optimal prognostic cut-off value for MFR. The primary endpoint was defined as cardiovascular endpoint events. Survival and prognostic analyses were conducted by Kaplan-Meier method and Cox proportional hazard models. The difference of AUCs was analyzed by Delong test.Results:A total of 314 patients (194 males, 120 females; age (59.4±8.6) years) were enrolled. Over a median follow-up duration of 754 (range: 628-914) d, 54 patients had endpoint events. ROC curve showed that the prediction ability of MFR was significantly better than that of conventional MPI (AUCs: 0.713 and 0.512; z=3.76, P<0.001). The optimal prognostic cut-off value for MFR to predict endpoint events in patients with intermediate stenoses was 2.04. Cox multivariate analysis showed that MFR (hazard ratio ( HR)=0.434, 95% CI: 0.282-0.669, P<0.001) was an independent predictor of endpoint events in patients with intermediate stenoses. Kaplan-Meier survival analysis showed that the prevalence of endpoint events in patients with MFR≤2.04 was significantly higher than that in patients with MFR>2.04 (25.4%(43/169) vs 7.6%(11/145); χ2=21.27, P<0.001). Conclusion:The MFR measured by SPECT MBF quantitative technique has an independent predictive value for cardiovascular endpoint events in patients with intermediate stenoses.

Comparison of corneal refractive power and visual quality after LASEK, TransPRK or FS-LASIK / 国际眼科杂志(Guoji Yanke Zazhi)

AIM:To compare the corneal refractive power and visual quality after three kinds of corneal refractive surgery: laser subepithelial keratomileusis(LASEK), transepithelial photorefractive keratectomy(TransPRK)and femtosecond laser assisted in situ keratomileusis(FS-LASIK).METHODS: Retrospective study. A total of 232 patients(464 eyes)who underwent elective corneal refractive surgery in our hospital from January 2021 to December 2022 were selected as the study subjects. They were divided into the LASEK group of 70 cases(140 eyes), TransPRK group of 76 cases(152 eyes), and FS-LASIK group of 86 cases(172 eyes)according to the different surgical choices made by the patients. Uncorrected visual acuity(UCVA), visual quality, biomechanical stability, tear film break-up time(BUT), Schirmer Ⅰ test(SⅠt)and quality of life were compared among the three groups at 1 and 3 mo postoperatively.RESULTS: The UCVA of the three groups significantly improved at 1 and 3 mo postoperatively, the total high-order aberrations, spherical aberration, horizontal coma, and vertical coma of the entire cornea were significantly increased, while the biomechanical stability in all three groups were significantly reduced(all P&#x003C;0.05). At 3 mo postoperatively, the biomechanical stability in the TransPRK and LASEK groups were higher than those of the FS-LASIK group(all P&#x003C;0.05), and the TransPRK group had higher quality of life scores than the LASEK group and FS-LASIK group(P&#x003C;0.05). Furthermore, there was no significant difference in preoperative or postoperative BUT and SⅠt among the three groups(all P&#x003E;0.05).CONCLUSION:In the treatment of ametropia, LASEK, TransPRK and FS-LASIK all have certain effects, and have similar results in improving UCVA and increasing visual quality. However, TransPRK and LASEK have more stable biomechanical properties than FS-LASIK, and have better efficacy in improving patients' quality of life.

Based on LC-MS technology explored the metabolomics of Agrimonia pilosa intervening in non-small cell lung cancer A549 cells / 药学学报

The objective of this study was to analyze the effects on cell viability, apoptosis, and cell cycle of non-small cell lung cancer (NSCLC) A549 cells after intervention with Agrimonia pilosa (AP) and investigate Agrimonia pilosa anti-tumor activity in vitro. Meanwhile, liquid chromatography mass spectrometry (LC-MS) metabolomics technology was used to analyze the changes of cellular metabolites and metabolic pathways. The results of this study will provide a theoretical and experimental basis for investigating the mechanism of the effect of Agrimonia pilosa on non-small cell lung cancer A549 cells. The results showed that the cell nucleus of A549 cells crumpled and apoptosis occurred with the increase of drug concentration. The survival rate of the cells decreased, and the inhibition rate reached 21.5% and 91.74% under the low and high dose conditions, respectively. Lactate dehydrogenase (LDH) content increased (P < 0.05). Metabolomics results showed significant differences in metabolism between groups, thirty-three distinct metabolites including LysoPC(24:0/0:0), LysoPC(17:0/0:0) and PC(O-40:5) were deduced. The pathway enrichment showed that the Agrimonia pilosa plays an anti-tumor role mainly by regulating the metabolism of glycerophosphate and purine in A549 cells, in which the effect on glycerophosphate metabolism pathway was most significant. The results of combined pharmacodynamics suggested that Agrimonia pilosa might induce apoptosis and inhibit the growth of A549 cells by regulating LysoPC(24:0/0:0), LysoPC(17:0/0:0) and PC(O-40:5) metabolites in A549 cells.

A collaborative model between dialysis clinics and a hospital center improves the quality of vascular access care and intervention for hemodialysis patients

This study reports the outcomes of a collaborative program between dialysis clinics and a referral hospital, which consisted of clinical monitoring and supplementary routine surveillance, for improving the quality of vascular access care. Methods: This retrospective observational study was performed at five dialysis clinics as part of a 2-year collaborative program (2019–2020) in conjunction with a hospital-based dialysis access management center. A total of 392 hemodialysis patients (arteriovenous fistula [AVF], n = 339 and arteriovenous graft [AVG], n = 53) were included. Outcome measures included the prognosis of vascular access, clinic satisfaction, and referral rate to the hospital. Results: Increased vascular access flow was observed and critical flow events decreased from the first to the second year (AVF: 18.3% vs. 12.7%, p < 0.001; AVG: 26.2% vs. 20.1%, p = 0.30). There were fewer percutaneous transluminal angioplasty events in the AVG group (0.77 per person-year vs. 0.51 per person-year, p = 0.005). New AVF or AVG creation events also remained low. All dialysis clinics were satisfied with the program. The overall referral rate from the participating clinics increased (65.7% vs. 72.0%) during the study period independently of the physical distance between the dialysis clinic and the hospital. Conclusion: The collaboration between dialysis clinics and a referral hospital for improving the quality of vascular access care was successful in this study, and the model can be used by other clinics and hospitals looking to improve care coordination in dialysis patients.

The effect of high-power atrial fibrillation ablation on intraoperative acute pulmonary vein isolation and postoperative troponin levels / 中国医师杂志

Objective:To compare the effects of high-power and conventional power atrial fibrillation ablation on intraoperative acute pulmonary vein isolation, postoperative troponin levels, and atrial fibrillation recurrence.Methods:A retrospective selection was conducted on 105 patients with paroxysmal atrial fibrillation admitted to the Baoding NO.1 Central Hospital from January 2017 to December 2020. According to different treatment methods, they were divided into a high-power ablation group of 52 cases and a conventional power ablation group of 53 cases. The intraoperative rate of single circle acute pulmonary vein isolation, the recovery of electrical conduction after acute pulmonary vein isolation, and the location and number of points that need to be added were compared between the two groups; At the same time, two groups were compared in terms of surgical time, ablation time, surgical radiation exposure time and radiation dose, intraoperative complications postoperative cardiac troponin levels at 12 hours, and recurrence of atrial fibrillation within 1 year after ablation.Results:The intraoperative single loop pulmonary vein isolation rate and postoperative troponin levels in the high-power atrial fibrillation ablation group were higher than those in the conventional atrial fibrillation ablation group (all P<0.05). The surgical time, ablation time, and the number of sites and points that need to be added during surgery were less than those in the conventional atrial fibrillation ablation group (all P<0.05). There was no statistically significant difference in the incidence of intraoperative complications and postoperative atrial fibrillation recurrence between the two groups (all P>0.05). Conclusions:High power atrial fibrillation ablation has a higher single loop acute pulmonary vein isolation rate, fewer patch sites and points, shorter surgical time, and greater ablation damage compared to conventional ablation, and the clinical efficacy of the two groups is similar after surgery.

Disease burden of occupational pneumoconiosis in Jinhua City from 2009 to 2021 / 预防医学

Objective@# To investigate the disease burden of occupational pneumoconiosis from 2009 to 2021 in Jinhua City, Zhejiang Province, so as to provide insights into formulating occupational pneumoconiosis prevention and control measures.@*Methods@#Data on occupational pneumoconiosis in Jinhua City from 2009 to 2021 were collected through Occupational Disease and Health Hazard Monitoring Information System including demographic characteristics, disability level, age, pneumoconiosis type and stage, and analyzed years live dwith disability (YLD), years of life lost (YLL) and disability adjusted life years (DALY) by different genders, pneumoconiosis stages, pneumoconiosis types, ages and disability levels. @*Results@#A total of 244 occupational pneumoconiosis cases were diagnosed in Jinhua City from 2009 to 2021, of which 225 cases were male, accounting for 92.21%. The median age of onset was 44.50 (interquartile range, 23.00) years. There were 229 deaths, with a median age of 78.00 (interquartile range, 13.00) years. The DALY was 3 791.88 person-years, YLD was 2 428.21 person-years (64.04%) and YLL was 1 363.67 person-years (35.96%). The YLD was 3 647.8 person-years in men, which was higher than 144.08 person-years in women (P<0.05). The YLD of asbestosis cases was lower than that of silicosis, coal workers' pneumoconiosis and other pneumoconiosis (P<0.05). The YLL was not statistically significant in the stage and type of occupational pneumoconiosis (P>0.05). The YLD was higher among cases at ages of less than 40 years, and lower among cases at ages of 60 to 69 years and 70 years and over (P<0.05); the YLL was lower among cases at ages of 70 years and over (P<0.05). The cases with second/third level of disability had the highest YLD, followed by the cases with fourth/fifth level of disability, and the cases with sixth/seventh level of disability had the lowest YLD (P<0.05). @*Conclusions@#The disease burden of occupational pneumoconiosis in Jinhua City from 2009 to 2021 is mainly induced by disability, and the disease burden caused by silicosis is the highest. With the progress of pneumoconiosis stages and disability levels, the life loss continues to increase.

Erythropoietin promotes myocardial infarction repair in mice by improving the function of Sca-1+ stem cells / 生理学报

Myocardial infarction (MI) is one of the leading causes of death in the world. With the improvement of clinical therapy, the mortality of acute MI has been significantly reduced. However, as for the long-term impact of MI on cardiac remodeling and cardiac function, there is no effective prevention and treatment measures. Erythropoietin (EPO), a glycoprotein cytokine essential to hematopoiesis, has anti-apoptotic and pro-angiogenetic effects. Studies have shown that EPO plays a protective role in cardiomyocytes in cardiovascular diseases, such as cardiac ischemia injury and heart failure. EPO has been demonstrated to protect ischemic myocardium and improve MI repair by promoting the activation of cardiac progenitor cells (CPCs). This study aimed to investigate whether EPO can promote MI repair by enhancing the activity of stem cell antigen 1 positive stem cells (Sca-1+ SCs). Darbepoetin alpha (a long-acting EPO analog, EPOanlg) was injected into the border zone of MI in adult mice. Infarct size, cardiac remodeling and performance, cardiomyocyte apoptosis and microvessel density were measured. Lin- Sca-1+ SCs were isolated from neonatal and adult mouse hearts by magnetic sorting technology, and were used to identify the colony forming ability and the effect of EPO, respectively. The results showed that, compared to MI alone, EPOanlg reduced the infarct percentage, cardiomyocyte apoptosis ratio and left ventricular (LV) chamber dilatation, improved cardiac performance, and increased the numbers of coronary microvessels in vivo. In vitro, EPO increased the proliferation, migration and clone formation of Lin- Sca-1+ SCs likely via the EPO receptor and downstream STAT-5/p38 MAPK signaling pathways. These results suggest that EPO participates in the repair process of MI by activating Sca-1+ SCs.

Inhibitory effect of three strains of biocontrol microbes on pathogens causing rhizome rot of Polygonatum cyrtonema / 中国中药杂志

Rhizome rot is one of the main disease in the cultivation of Polygonatum cyrtonema, and it is also a global disease which seriously occurs on the perennial medicinal plants such as Panax notoginseng and P. ginseng. There is no effective control method at present. To identify the effects of three biocontrol microbes(Penicillium oxalicum QZ8, Trichoderma asperellum QZ2, and Brevibacillus amyloliquefaciens WK1) on the pathogens causing rhizome rot of P. cyrtonema, this study verified six suspected pathogens for their pathogenicity on P. cyrtonema. The result showed that Fusarium sp. HJ4, Colletotrichum sp. HJ4-1, and Phomopsis sp. HJ15 were the pathogens of rhizome rot of P. cyrtonema, and it was found for the first time that Phomopsis sp. could cause rhizome rot P. cyrtonema. Furthermore, the inhibitory effects of biocontrol microbes and their secondary metabolites on three pathogens were determined by confrontation culture. The results showed that the three tested biocontrol microbes significantly inhibited the growth of three pathogens. Moreover, the secondary metabolites of T. asperellum QZ2 and B. amyloliquefaciens WK1 showed significant inhibition against the three pathogens(P<0.05), and the effect of B. amyloliquefaciens WK1 sterile filtrate was significantly higher than that of high tempe-rature sterilized filtrate(P<0.05). B. amyloliquefaciens WK1 produced antibacterial metabolites to inhibit the growth of pathogens, and the growth inhibition rate of its sterile filtrate against three pathogens ranged from 87.84% to 93.14%. T. asperellum QZ2 inhibited the growth of pathogens through competition and antagonism, and P. oxalicum QZ8 exerted the inhibitory effect through competition. The research provides new ideas for the prevention and treatment of rhizome rot of P. cyrtonema and provides a basis for the di-sease control in other crops.

Advances on pathogenesis of acquired peritoneal ultrafiltration failure in peritoneal dialysis / 中华肝脏病杂志

Peritoneal ultrafiltration failure is a common reason for peritoneal dialysis (PD) withdrawal as well as mortality in PD patients. Based on the three-pore system, inter-cellular small pores and trans-cellular ultra-small pores (aquaporin-1) are mainly responsible for water transfer across the peritoneum. Both small and ultra-small pores-dependent water (free water) transport decline accompanied with time on PD, with more significant decrease in free water, resulting in peritoneal ultrafiltration failure. The reduction of free water transport is associated with fast peritoneal solute transfer, reduced crystalloid osmotic gradient due to increased interstitial glucose absorption, and declined osmotic conductance to glucose resulted from impaired aquaporin-1 function and peritoneal interstitial fibrosis. The decline of small pore-based water is mainly because of fast loss of crystalloid osmotic gradient, decrease of hydrostatic pressure mediated by peritoneal vasculopathy, as well as reduced absolute number of small pores. The current review discusses the advance on pathogenesis of acquired peritoneal ultrafiltration failure in long-term PD.

Study on the status of turnover intention and its influencing factors of 382 hemato-oncology nurses / 中华劳动卫生职业病杂志

Objective: To explore the status of turnover intention and its influencing factors of hemato-oncology nurses. Methods: From September to November 2021, the convenience sampling method was used to select 382 hemato-oncology nurses from 8 tertiary grade A general hospitals in Shandong Province. The general information questionnaire, the Chinese Nurses' Work Stressor Scale, the Psychological Capital Questionnaire and the Turnover Intention Questionnaire were used to investigate the general situation, occupational stress, psychological capital and turnover intention of the objects. The correlations between the turnover intention, occupational stress and psychological capital of the objects were analyze by Pearson correlation. And the multiple linear regression was used to analyze the influencing factors of turnover intention. A structural equation model was used to analyze the effect path of occupational stress and psychological capital on turnover intention. Results: The total turnover intention score of hemato-oncology nurses was (14.25±4.03), with the average item score of (2.38±0.67). The occupational stress score of hemato-oncology nurses was (71.57±14.43), and the psychological capital score was (91.96±15.29). The results of correlation analysis showed that the turnover intention of hemato-oncology nurses was positively correlated with occupational stress, and was negatively correlated with psychological capital (r=0.599, -0.489, P<0.001). Multiple linear regression analysis showed that married (β=-0.141), psychological capital (β=-0.156) and occupational stress (β=0.493) were the influencing factors of turnover intention of hemato-oncology nurses (P<0.05). The path analysis of structural equation model showed that the direct effect of occupational stress on turnover intention of hemato-oncology nurses was 0.522, and the intermediary effect of psychological capital on turnover intention was 0.143 (95%CI: 0.013-0.312, P<0.05), accounting for 21.5% of the total effect. Conclusion: The turnover intention of hemato-oncology nurses is at a high level, hospital and administrators should focus on the psychological state of unmarried nurses. By improving the psychological capital of nurses, to reduce occupational stress and turnover intention.

Protective effect of barium chloride pretreatment on lung in mice with acute respiratory distress syndrome / 中华危重病急救医学

Objective:To explore whether barium chloride (BaCl 2) preconditioning has the protective effect on lipopolysaccharide (LPS)-induced acute respiratory distress syndrome (ARDS) model in mice and the possible mechanism. Methods:Sixty 8-12 week old healthy C57BL/6 male mice were randomly divided into control group, ARDS model group and BaCl 2 pretreatment group, with 20 mice in each group. The BaCl 2 pretreatment group was continuously injected with BaCl 2 (4 mg/kg through the tail vein) for 3 days before ARDS model establishment. ARDS model was established by intratracheally injecting (3 mg/kg) LPS. The control group was intratracheally given the same volume of 0.9% normal saline. On 24th hour after ARDS model establishment, some mice were sacrificed for obtaining fresh lung tissue. And the right lower lobe of the lung was separated for observing the pathological changes of lung tissue while the left lung tissue was used to measure the wet/dry weight ratio (W/D) of the lung. Some mice were sacrificed for observing pulmonary microvascular permeability at 2nd hours after injecting Evans blue (EB) through tail vein. The left mice were killed for alveolar lavage to measure the levels of tumor necrosis factor-α (TNF-α) via enzyme linked immunosorbent assay (ELISA). Results:Comparing with the control group, ARDS model group showed typical ARDS pathological changes, which included the increased W/D ratio (4.951±0.161 vs. 3.449±0.299, P < 0.01) and the content of EB in the lung tissue (μg/g: 0.130±0.027 vs. 0.085±0.011, P < 0.01), the damaged alveolar wall structure, lung congestion and exudates in the alveoli, as well as amounts of inflammatory cells. The pathological score of lung injury (10.33±1.15 vs. 1.67±0.58) and the level of TNF-α in BALF (ng/L: 900.85±247.80 vs. 68.21±5.79) were significantly increased in the ARDS model group (both P < 0.01). Comparing with the ARDS model group, the lung W/D ratio (4.620±0.125 vs. 4.951±0.161) and the EB content in the lung tissue (μg/g: 0.108±0.011 vs. 0.130±0.027) of BaCl 2 pretreatment group were significantly reduced (both P < 0.01). And the damaged pulmonary structural BaCl 2 pretreatment group were significantly alleviated. In addition, the pulmonary pathological score (5.00±1.00 vs. 10.33±1.15) and the level of TNF-α in BALF (ng/L: 169.16±73.33 vs. 900.85±247.80) were significantly decreased (both P < 0.01). Conclusion:Barium chloride pretreatment can improve the lung histopathological changes of ARDS model mice induced by LPS by reducing the permeability of pulmonary capillaries and local inflammatory reaction.Barium chloride has the protective effect against LPS attack in mice model of ARDS.

Application of self-made anti-pressure sore cotton cover in preventing facial pressure injury in patients with non-invasive ventilation / 中华危重病急救医学

Objective:To observe the application effect of self-made anti-pressure sore cotton cover on the prevention of facial pressure injury in patients with non-invasive ventilation, and to explore the effective method of preventing facial pressure injury.Methods:A prospective study was conducted. Patients with mild to moderate respiratory failure and non-invasive ventilation admitted to the department of intensive care medicine of Harisen International Peace Hospital Affiliated to Hebei Medical University from March 2020 to August 2021 were enrolled, and they were divided into gauze pad group, foam dressing group and self-made anti-pressure ulcer cotton cover group by random number table method. Before wearing the ventilator mask, the gauze pad group and the foam auxiliary dressing group should fold or cut out the auxiliary dressing with the corresponding size and suitable for the patient's facial contour. In the self-made anti-pressure sore cotton cover group, the ventilator cotton cover could be worn only by selecting the cotton cover suitable for the patient's face shape, aligning the vent to the mouth and nose, and tying the fixed belt behind the ear. The incidence of facial pressure sore, the time required to connect man-machine interface (from the preparation of auxiliary dressing for pressure sores to the connection of ventilator) and the cost of dressing were compared among the three groups.Results:A total of 150 patients with non-invasive ventilation were enrolled, with 50 patients in each group. Compared with the gauze pad group and the foam dressing group, the incidence of facial pressure sore in the self-made anti-pressure sore cotton cover group was significantly reduced [6.0% (3/50) vs. 44.0% (22/50), 12.0% (6/50), both P < 0.05], and the time required to connect the man-machine interface was significantly shortened (minutes: 5.0±1.5 vs. 10.0±1.5, 8.0±2.0, both P < 0.05), dressing cost was significantly reduced (yuan: 30±10 vs. 150±20, 118±29, both P < 0.05). Conclusion:Compared with the gauze pad and the foam dressing, the incidence of facial pressure sore in non-invasive ventilation patients with self-made anti-pressure sore cotton cover is lower, the time required to connect man-machine interface is shorter, and the cost of pressure sore prevention dressing is less, which is suitable for the prevention of facial pressure injury in non-invasive ventilation patients.

A study on the severity of brain tissue edema in acute anterior circulation ischemic stroke based on time to maximum of the residual function hemodynamic changes / 中华放射学杂志

Objective:To explore the value of the Wilcoxon-Mann-Whitney generalized dominance ratio (T max-weighted ratio) based on residual tissue time to peak (T max) delayed severity weighting in predicting the moderate to severe edema after acute anterior circulation ischemic stroke. Methods:The clinical and imaging features of patients with acute anterior circulation ischemic stroke from January 2019 to April 2022 in Yidu Central Hospital of Weifang were retrospectively analyzed. A total of 85 patients were enrolled, including 60 males and 25 females, with the age from 34 to 93 (67±11) years old. Patients underwent non-contrast CT, CT angiography of the head and neck, and CT perfusion imaging of the head, and ischemic core volume and the ratio of T max 4-6 s volume, T max 6-8 s volume, T max 8-10 s volume, and T max >10 s volume relative to the entire hypo-perfused area (T max>4 s volume) was measured, and the T max-weighted ratio was calculated, the collateral circulation were assessed. Patients were divided into mild edema group and moderate to severe edema group according to whether local swelling exceeded 1/3 of the unilateral cerebral hemisphere on non-contrast CT at 24-48 h. The indicators were compared between the two groups by independant t test, Mann-Whitney U and χ 2 test. The performance to predict moderate to severe edema was assessed using the receiver operating characteristic (ROC) curve. The univariate and multivariate logistic regression was used to analyze the risk factors for the moderate to severe edema. Differences in baseline National Institutes of Health Stroke Scale (NIHSS) score and infarct core volume were equalized by 1∶1 propensity score matching (PSM) and the differences of T max-weighted ratio between the two groups were further compared. Results:There were 52 cases in the mild edema group and 33 cases in the moderate to severe edema group. Baseline NIHSS score, T max>10 s volume, ischemic core volume, T max-weighted ratio and proportion of poor collateral circulation were higher in the moderate-severe edema group than those in the mild edema group ( P<0.001), T max 4-6 s volume was lower than in the mild edema group ( P<0.001). ROC analysis showed that the area under the curve (AUC) of T max-weighted ratio for predicting the incidence of moderate to severe edema was 0.885 (95%CI 0.798-0.944), with an optimal cut-off value of 1.17, sensitivity of 84.85% and specificity of 82.69% before PSM. The predictive ability based on T max-weighted ratio was similar to ischemic core volume( Z=0.64, P=0.520), T max 4-6 s volume ( Z=1.48, P=0.140) and superior to T max 6-8 s volume( Z=5.65, P<0.001), T max 8-10 s volume( Z=4.46, P<0.001), T max >10 s volume ( Z=2.91, P=0.004). Multivariate logistic regression analysis showed that T max-weighted ratio>1.17 was an independent predictor of the development of moderate to severe edema (OR=10.40,95%CI 2.65-40.83, P=0.001) through adjusted for baseline NIHSS score and ischemic core volume. After PSM, 14 patients in each group were included; the T max-weighted ratio was higher in the moderate-to-severe edema group than that in the mild edema group ( P<0.001), and the differences in other factors were not statistically significant (all P>0.05); ROC analysis showed that the AUC of T max-weighted ratio to predict the occurrence of moderate-to-severe edema was 0.852 (95%CI 0.667-0.957). Conclusion:The T max-weighted ratio can predict the occurrence of moderate-to-severe edema in brain tissue after acute anterior circulation ischemic stroke.

Diagnostic value of ATP stress myocardial perfusion imaging in detecting coronary artery disease with quantitative coronary angiography as the gold standard / 中华核医学与分子影像杂志

Objective:To assess the diagnostic value of ATP stress myocardial perfusion imaging(MPI) in detecting coronary heart disease (CAD) with quantitative coronary angiography (QCA) as the gold standard.Methods:A total of 95 consecutive patients (65 males, 30 females, age (56.2±8.5) years) who underwent ATP stress/rest MPI and coronary angiography (CAG) within one month in Fuwai Hospital, Chinese Academy of Medical Sciences from May 2018 to December 2018 were enrolled prospectively. The adverse reactions of ATP stress test were observed. Semi-quantitative analysis was performed on MPI results, and the summed stress score (SSS), summed rest score (SRS) and summed difference score (SDS) were obtained. Quantitative analysis was performed on CAG images, and the degree of QCA coronary artery stenosis was analyzed. Using QCA as the gold standard, the diagnostic efficiency of ATP stress MPI was calculated. Pearson correlation analysis was performed to analyzed the relationship between SSS and the degree of QCA coronary artery stenosis.Results:In 95 cases, the incidence of adverse reactions in ATP stress test was 73.7%(70/95), which could be relieved automatically after drug withdrawal. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of ATP stress MPI in diagnosing coronary artery stenosis ≥50% were 45.3%(24/53), 81.0%(34/42), 75.0%(24/32), 54.0%(34/63) and 61.1%(58/95) respectively, which were 15/16, 78.5%(62/79), 46.9%(15/32), 98.4%(62/63), and 81.1%(77/95) respectively in diagnosing coronary artery stenosis ≥70%. There was moderate correlation between SSS and the degree of QCA coronary artery stenosis ( r=0.418, P=0.017). Conclusion:ATP stress MPI has a clinical value in the diagnosis of myocardial ischemia in CAD.

Research progress of radionuclide labeled fibroblast activation protein inhibitors PET imaging in cardiac diseases / 中华核医学与分子影像杂志

Myocardial fibrosis is one of the important pathological mechanisms in cardiac diseases. Non-invasive evaluation of fibrosis is of great clinical significance. Fibroblast activation protein (FAP) is selectively expressed in the membrane of activated fibroblasts. Radionuclide labeled FAP inhibitors (FAPI) serve as novel imaging agents, which specifically target to the process of fibrotic remodeling. This article reviews the research progress of radionuclide labeled FAPI PET imaging in cardiac diseases.

Quantitative assessment of right ventricular myocardial blood flow with SPECT in pulmonary hypertension animal models / 中华核医学与分子影像杂志

Objective:To explore the changes of right ventricular myocardial perfusion in pulmonary arterial hypertension (PAH) pig models with a quantitative analysis technique based on dynamic SPECT myocardial perfusion imaging, and analyze the relationship between myocardial blood flow, hemodynamics and right ventricular function.Methods:Eleven Chinese miniature pigs (all males, 6-8 months old) weighing 25-30 kg were selected. The PAH models were established by ligating the main pulmonary artery and embolizing the right lower pulmonary artery. After the models were established, dynamic myocardial perfusion imaging with one-day resting/adenosine stress 99Tc m-methoxyisobutylisonitrile (MIBI) SPECT was performed, and the quantitative parameters of left and right ventricles were obtained, including stress myocardial blood flow (SMBF), rest myocardial blood flow (RMBF) and myocardial flow reserve (MFR: the ratio of stress to rest myocardial blood flow). Right heart catheterization was performed to evaluate the mean pulmonary arterial pressure (mPAP), and the right heart function index tricuspid annular plane systolic excursion (TAPSE) was measured by transthoracic echocardiography. According to TAPSE, animals were divided into right heart function preserved group ( n=5, TAPSE≥17 mm) and right heart dysfunction group ( n=4, TAPSE<17 mm). Pearson correlation analysis and the independent-sample t test were used for data analysis. Results:Nine experimental pig models were established with increased mPAP of (38.1 ± 11.6 ) mmHg (1 mmHg=0.133 kPa). Myocardial perfusion imaging showed clear radiotracer uptake in the right heart and myocardial hypertrophy. There was a significant positive correlation between right ventricular myocardial RMBF ((0.71±0.13) ml·min -1·g -1) and mPAP ( r=0.94, P< 0.001). The SMBF in the decreased right ventricular function group was significantly lower than that in the preserved right ventricular function group ((1.66±0.35) vs (2.24±0.30) ml·min -1·g -1;t=2.68, P=0.032). Conclusion:SPECT myocardial blood flow quantification can be used to evaluate the right ventricular myocardial blood flow in pig models of PAH.

Advances on pathogenesis of acquired peritoneal ultrafiltration failure in peritoneal dialysis / 中华肾脏病杂志

Peritoneal ultrafiltration failure is a common reason for peritoneal dialysis (PD) withdrawal as well as mortality in PD patients. Based on the three-pore system, inter-cellular small pores and trans-cellular ultra-small pores (aquaporin-1) are mainly responsible for water transfer across the peritoneum. Both small and ultra-small pores-dependent water (free water) transport decline accompanied with time on PD, with more significant decrease in free water, resulting in peritoneal ultrafiltration failure. The reduction of free water transport is associated with fast peritoneal solute transfer, reduced crystalloid osmotic gradient due to increased interstitial glucose absorption, and declined osmotic conductance to glucose resulted from impaired aquaporin-1 function and peritoneal interstitial fibrosis. The decline of small pore-based water is mainly because of fast loss of crystalloid osmotic gradient, decrease of hydrostatic pressure mediated by peritoneal vasculopathy, as well as reduced absolute number of small pores. The current review discusses the advance on pathogenesis of acquired peritoneal ultrafiltration failure in long-term PD.

Research advances in bioactivity of oyster peptides / 药学实践与服务

Functional peptides refer to peptides that are beneficial to life activities or have special physiological activities, also known as bioactive peptides. Oyster is rich in protein and is a good material for developing bioactive peptides, which has great potential as a functional food and great application value in pharmaceutical and medical industry. With the development of modern biotechnology and medical technology, the method innovation of oyster peptide preparation，the absorptivity and biological activity of oyster peptide have been enhanced significantly, which lead to deep recognition of the biological function of oyster peptide and offer the boarder application prospect. The researches on the diversification activities of oyster peptides were summarized in this review, which provided clues and ideas for the development of the oyster peptide applications.

Application of autoantibody in the diagnosis and treatment of threatened preterm labor / 实用医学杂志

Objective To investigate the correlation between serum levels of antiphospholipid antibody(aPL)(ACA-IgG,ACA-IgM,β2-GPI-IgG,β2-GPI-IgM),LAC,ds-DNA,and ANA and preterm labor with pre-maturity,and to analyze the prediction of preterm labor with the combination of age,week of gestation,history of delivery,and history of miscarriage,so as to provide references for the prevention and treatment of preterm la-bor and to promote eugenics.Methods Through a retrospective study design,43 pregnant women with preterm la-bor with preeclampsia diagnosed and treated at Guangdong Provincial People's Hospital from June 2018 to Decem-ber 2020 were collected as a case group,and 47 healthy pregnant women of the same period and similar gestational age were randomly selected as a control group.aPL(ACA-IgG,ACA-IgM,β2-GPI-IgG,β2-GPI-IgM)and ds-DNA were detected by enzyme immunoassay(ELISA)using an enzyme immunoassay instrument,lupus anticoagulant(LAC)in plasma was detected by coagulometer,and ANA was detected by indirect immunofluorescence using an immunofluorescence analyzer,and the application of SPSS 24.0 software was used to statistically analyze the gen-eral information and laboratory test data.the age of the patients was combined,gestational week,birth history,miscarriage history and other general information,logistic regression analysis was performed to find the indepen-dent influencing factors related to preterm labor;the analysis was performed by using the subjects'work charac-teristic curve(ROC curve)to determine the area under the ROC curve(AUC),the best predictive value,sensi-tivity and specificity,and to analyze the predictive value of preterm labor with preterm labor.Results In this study,the pregnant women in the group of pregnant women with preterm labor with preeclampsia were aged 27～40 years,with a mean age of(29.93±3.91)years,and the gestational weeks at the time of blood collection were 27-36 weeks,with a mean gestational week of(31.96±2.35)weeks,while the pregnant women in the healthy control group during the same time period were aged 25～40 years,with a mean age of(30.74±3.44)years,and the gestational weeks at the time of blood collection were 28～36 weeks,with a mean gestational week of(32.84±2.13)weeks.In the same period,healthy control group pregnant women were aged 25～40 years,with a mean age of(30.74±3.44)years,and were 28～36 weeks pregnant at the time of blood collection.The β2-GPI-IgM level of pregnant women in the case group with preterm labor was significantly higher than that of pregnant women in the healthy control group at the same time,with statistically significant differences(P<0.05),while the differences in the levels of β2-GPI-IgG,ds-DNA,and LAC between the two groups were not statistically significant(P>0.05).The analysis of the ROC curves showed that the AUC of β2-GPI-IgM was 0.642(P<0.05),which was the highest in the preterm group,and the AUC was 0.642(P<0.05).0.05),which was an independent influencing factor of preterm labor;age,gestational week,labor history,and miscarriage history could not be used as independent in-fluencing factors of preterm labor.Conclusion β2-GPI-IgM is associated with threatened preterm labor,it can be used as a predictor of threatened preterm labor,and has clinical utility in the monitoring of threatened preterm labor in pregnant women.