Clinical application of Visual throat forceps in the removal of hypopharyngeal foreign body / 临床耳鼻咽喉头颈外科杂志

Objective:To explore the feasibility of using self-made visual throat forceps to remove hypopharyngeal foreign bodies. Methods:The throat forceps were combined with the endoscope and connected to a monitor via a data cable resulting in a visual throat forceps apparatus. This device was utilized to examine and treat the hypopharyngeal foreign bodies. Results:Among 53 patients, foreign bodies were detected in 51,with 48 cases involving hypopharyngeal foreign bodies. All were successfully extracted using the visual throat forceps. Three cases, diagnosed as esophageal foreign bodies by electronic gastroscopy, were treated using the same method. Conclusion:Visual throat forceps can be used to examine the hypopharynx and remove foreign bodies. It has the advantages of simple operation, rapid operation, and high success rate of foreign body removal from the hypopharynx. It is worthy of clinical application.

Clinical features and prognostic factors of elderly patients with mantle cell lymphoma / 中华血液学杂志

Objective: To examine the clinical characteristics and prognostic factors of elderly patients with mantle cell lymphoma (MCL) and the impact of nutrition and underlying diseases on the prognosis of elderly patients with MCL. Methods: retrospectively analyzed 255 elderly patients with MCL from 11 medical centers, including Peking University Third Hospital between January 2000 and February 2021. We analyzed clinical data, such as age, gender, Mantle Cell Lymphoma International Prognostic Index score, and treatment options, and performed univariate and multivariate prognostic analysis. We performed a comprehensive geriatric assessment on elderly MCL patients with medical records that included retraceable underlying disease and albumin levels, and we investigated the impact of basic nutrition and underlying disorders on MCL prognosis in the elderly. Results: There were 255 senior individuals among the 795 MCL patients. Elderly MCL was more common in males (78.4%), with a median age of 69 yr (ages 65-88), and the majority (88.6%) were identified at a late stage. The 3-yr overall survival (OS) rate was 42.0%, with a 21.2% progression-free survival (PFS) rate. The overall response rate (ORR) was 77.3%, with a 33.3% total remission rate. Elderly patients were more likely than younger patients to have persistent underlying illnesses, such as hypertension. Multivariate analysis revealed that variables related with poor PFS included age of ≥80 (P=0.021), Ann Arbor stage Ⅲ-Ⅳ (P=0.003), high LDH level (P=0.003), involvement of bone marrow (P=0.014). Age of ≥80 (P=0.001) and a high LDH level (P=0.003) were risk factors for OS. The complete geriatric assessment revealed that renal deficiency was associated with poorer OS (P=0.047) . Conclusions: Elderly MCL patients had greater comorbidities. Age, LDH, renal function, bone marrow involvement, and Ann Arbor stage are all independent risk factors for MCL in the elderly.

Construction of a predictive model for performing bronchoalveolar lavage in children with Mycoplasma pneumoniae pneumonia and pulmonary consolidation / 中国当代儿科杂志

OBJECTIVES@#To investigate the risk factors for performing bronchoalveolar lavage (BAL) in children with Mycoplasma pneumoniae pneumonia (MPP) and pulmonary consolidation, and to construct a predictive model for performing BAL in these children.@*METHODS@#A retrospective analysis was performed for the clinical data of 202 children with MPP who were hospitalized in the Department of Pediatrics, Changzhou No. 2 People's Hospital Affiliated to Nanjing Medical University, from August 2019 to September 2022. According to whether BAL was performed, they were divided into BAL group with 100 children and non-BAL group with 102 children. A multivariate logistic regression analysis was used to identify the risk factors for performing BAL in MPP children with pulmonary consolidation. Rstudio software (R4.2.3) was used to establish a predictive model for performing BAL, and the receiver operator characteristic (ROC) curve, C-index, and calibration curve were used to assess the predictive performance of the model.@*RESULTS@#The multivariate logistic regression analysis demonstrated that the fever duration, C-reactive protein levels, D-dimer levels, and presence of pleural effusion were risk factors for performing BAL in MPP children with pulmonary consolidation (P<0.05). A nomogram predictive model was established based on the results of the multivariate logistic regression analysis. In the training set, this model had an area under the ROC curve of 0.915 (95%CI: 0.827-0.938), with a sensitivity of 0.826 and a specificity of 0.875, while in the validation set, it had an area under the ROC curve of 0.983 (95%CI: 0.912-0.996), with a sensitivity of 0.879 and a specificity of 1.000. The Bootstrap-corrected C-index was 0.952 (95%CI: 0.901-0.986), and the calibration curve demonstrated good consistency between the predicted probability of the model and the actual probability of occurrence.@*CONCLUSIONS@#The predictive model established in this study can be used to assess the likelihood of performing BAL in MPP children with pulmonary consolidation, based on factors such as fever duration, C-reactive protein levels, D-dimer levels, and the presence of pleural effusion. Additionally, the model demonstrates good predictive performance.

Comparison of two luminescence detection methods for staphylococcal enterotoxin C content in simulated milk samples / 细胞与分子免疫学杂志

Objective To compare the sensitivity and accuracy of amplified luminescent proximity homogeneous assay linked immunosorbent assay (AlphaLISA) and magnetic particles-based chemiluminescence immunoassay (MP-CLIA) for detection of staphylococcal enterotoxin C (SEC) in the simulated milk samples. Methods The AlphaLISA was constructed using goat anti-SEC polyclonal antibody-coupled receptor microspheres, biotin-labeled SEC monoclonal antibody and streptavidin-coupled donor microspheres. The MP-CLIA was constructed using goat anti-SEC polyclonal antibody conjugated alkaline phosphatase, biotin-labeled anti-SEC monoclonal antibody and streptavidin conjugated magnetic beads. Results The sensitivity of AlphaLISA to detect SEC content in simulated milk samples was 4.04 ng/L, and the coefficient of variation (CV) was 1.98%~9.82%. The sensitivity of MP-CLIA was 108.19 ng/L and CV was 4.63%~20.40%. Conclusion Compared with MP-CLIA, AlphaLISA is more sensitive and accurate to detecting SEC.

Sensitization characteristics of ragweed pollen in Beijing area / 临床耳鼻咽喉头颈外科杂志

Objective:To investigate the sensitization characteristics of ragweed pollen in patients with allergic rhinitis（AR） and（or） allergic asthma in Beijing area, and to provide basis for the prevention and treatment of ragweed pollen sensitized population. Methods:Patients with allergic rhinitis and/or asthma from January 2017 to December 2019 in the outpatient department of Allergy Department of Beijing Shijitan Hospital were retrospectively analyzed in this study. Skin prick test（SPT） was performed with ragweed pollen allergen reagents to compare different ages, genders and respiratory diseases allergen distribution, and to observe the sensitization characteristics of its population. All of the analyses were performed using SAS software version 9.4. Results:A total of 9 727 patients were enrolled in the end. The total positive rate of ragweed pollen SPT was 45.50%（4 426/9 727）, the highest positive rate was 65.54% in 13-17 years old group; The positive rate of ragweed pollen SPT was 49.79% in allergic rhinitis combined with asthma patients, followed by 46.46% in allergic rhinitis patients, and the lowest rate was 19.42% in single allergic asthma patients. There were more females than males in both ragweed pollen sensitized and non-ragweed pollen sensitized groups（P<0.05）, and the proportion was higher in 30-39 years old than in other age groups（P<0.05）. Ragweed pollen sensitization was higher than non-ragweed pollen sensitization in the allergic rhinitis group（98.49% vs 94.76%, P<0.05）. Ragweed pollen with other summer and autumn pollen allergens in patients with positive SPT, the top three were Chenopodium pollen, Humulus pollen and Artemisia grandis pollen, with positive rates of 90.42%, 89.63% and 85.40%, respectively. Ragweed combined with other pollen sensitization accounted for 99.57%（4 407/4 426）. Allergic rhinitis was the main disease in patients sensitized with ragweed pollen alone or combined with other pollens, and there was no significant difference between the two groups（94.97% vs 98.50%, P>0.05）. Conclusion:Ragweed pollen is highly sensitized in Beijing area, single ragweed pollen sensitization is rare, often combined with multiple pollen sensitization, and allergic rhinitis is the main disease.

Neoadjuvant radiohormonal therapy for oligo-metastatic prostate cancer: safety and efficacy outcomes from an open-label, dose-escalation, single-center, phase I/II clinical trial / 医学前沿

To evaluate the safety and efficacy of neoadjuvant radiohormonal therapy for oligometastatic prostate cancer (OMPC), we conducted a 3 + 3 dose escalation, prospective, phase I/II, single-arm clinical trial (CHiCTR1900025743), in which long-term neoadjuvant androgen deprivation was adopted 1 month before radiotherapy, comprising intensity modulated radiotherapy to the pelvis, and stereotactic body radiation therapy to all extra-pelvic bone metastases for 4-7 weeks, at 39.6, 45, 50.4, and 54 Gy. Robotic-assisted radical prostatectomy was performed after 5-14 weeks. The primary outcome was treatment-related toxicities and adverse events; secondary outcomes were radiological treatment response, positive surgical margin (pSM), postoperative prostate-specific antigen (PSA), pathological down-grading and tumor regression grade, and survival parameters. Twelve patients were recruited from March 2019 to February 2020, aging 66.2 years in average (range, 52-80). Median baseline PSA was 62.0 ng/mL. All underwent RARP successfully without open conversions. Ten patients recorded pathological tumor down-staging (83.3%), and 5 (41.7%) with cN1 recorded negative regional lymph nodes on final pathology. 66.7% (8/12) recorded tumor regression grading (TRG) -I and 25% (3/12) recorded TRG-II. Median follow-up was 16.5 months. Mean radiological progression-free survival (RPFS) was 21.3 months, with 2-year RPFS of 83.3%. In all, neoadjuvant radiohormonal therapy is well tolerated for oligometastatic prostate cancer.

Effect of sleep on brain clearing metabolites: thinking based on lymphoid system / 中华神经科杂志

Disruption of the structure of regular sleep is a common cause of neurodegenerative diseases such as Alzheimer′s disease and Parkinson′s disease, and its pathogenesis may be related to the deposition of waste products in the central nervous system. The glymphatic pathway, which is essentially a periarterial cerebrospinal fluid inflow pathway and peripheral venous clearance pathway, is functionally dependent on interstitial bulk flow coupling supported by aquaporin-4 on the astrocyte end-foot, also known as the lymphoid glial system. The glymphatic pathway, which removes waste proteins from the brain, is active primarily during sleep, and sleep quality declines with age, while the glymphatic pathway system also deteriorates with age, suggesting a relationship between sleep disturbances and symptom progression in neurodegeneration, and glymphatic system as a link closely links the two. The interaction of sleep, aging, metabolic waste and glymphatic pathway reticulation provides new clues to the pathogenesis of central nervous system degenerative diseases, and the glymphatic pathway may constitute a new target on treatment. The recent research progress on the effects of sleep and sleep disorders on the circulation of the glymphatic system, and proposes the possibility of sleep intervention to slow down the impairment of the lymphoid system function or even restore the function of the lymphoid system and thus improve the disease development process were reviewed in this paper.

Progress of neoadjuvant therapy for high-risk prostate cancer in the era of novel hormonal therapy / 现代泌尿外科杂志

In the past, the use of neoadjuvant androgen deprivation therapy (ADT) for prostate cancer did not exhibit survival benefits and was not recommended by the practicing guidelines. In recent years, with the emergence of novel hormonal therapeutics such as Abiraterone, Enzalutamide, Apalutamide and Darolutamide, the interest for neoadjuvant therapy has been reignited. Here, we summarize the four categories of neoadjuvant therapy with new hormonal agents, and discuss how to evaluate the efficacy and explore the molecular mechanism after neoadjuvant therapy.

Advances in tumor regression patterns and safe distance of distal resection margin after neoadjuvant therapy for rectal cancer / 中华胃肠外科杂志

Neoadjuvant therapy has been widely applied in the treatment of rectal cancer, which can shrink tumor size, lower tumor staging and improve the prognosis. It has been the standard preoperative treatment for patients with locally advanced rectal cancer. The efficacy of neoadjuvant therapy for rectal cancer patients varies between individuals, and the results of tumor regression are obviously different. Some patients with good tumor regression even achieve pathological complete response (pCR). Tumor regression is of great significance for the selection of surgical regimes and the determination of distal resection margin. However, few studies focus on tumor regression patterns. Controversies on the safe distance of distal resection margin after neoadjuvant treatment still exist. Therefore, based on the current research progress, this review summarized the main tumor regression patterns after neoadjuvant therapy for rectal cancer, and classified them into three types: tumor shrinkage, tumor fragmentation, and mucin pool formation. And macroscopic regression and microscopic regression of tumors were compared to describe the phenomenon of non-synchronous regression. Then, the safety of non-surgical treatment for patients with clinical complete response (cCR) was analyzed to elaborate the necessity of surgical treatment. Finally, the review studied the safe surgical resection range to explore the safe distance of distal resection margin.

Epidemiological characteristics of the notifiable infectious diseases reported in Shanghai in 2020 / 上海预防医学

ObjectiveTo understand the epidemic characteristics of notifiable infectious diseases （NIDs） other than coronavirus disease 2019 （COVID-19） in Shanghai in 2020， and to provide evidence for formulating infectious disease prevention and control strategies. MethodsData of NIDs reported in Shanghai from 2015 to 2020 were collected through the National Information System for Disease Control and Prevention. Descriptive epidemiological methods were used to analyze the incidence and prevalence characteristics of NIDs in Shanghai in 2020， and compared them with the average values of 2015 to 2019. ResultsA total of 45 574 cases of 23 kinds of NIDs were reported in Shanghai in 2020， except for COVID-19， with an incidence of 187.69/105， and a decrease rate of 50.58% compared with the average value of 2015 to 2019. The incidence of category B and C infectious diseases decreased by 38.07% and 57.47%， respectively （All P<0.001）. The top 3 reported infectious diseases with the highest incidence rate were influenza （64.58/105）， syphilis （39.09/105） and tuberculosis （24.90/105）. The incidence of most infectious diseases decreased compared with the average of 2015 to 2019， among which measles （97.15%）， rubella （88.81%）， pertussis （87.43%）， hand foot mouth disease （85.99%） and scarlet fever （79.84%） decreased significantly （all P<0.001）. In general， compared with the average from 2015 to 2019， respiratory infectious diseases declined most， followed by intestinal infectious diseases， insect-borne and natural focal infectious diseases， blood-borne and sexually transmitted diseases. Districts with higher incidence in 2020 were Fengxian District （310.23/105）， Xuhui District （271.93/105） and Hongkou District （254.38/105）. Respiratory infectious diseases in Fengxian District， intestinal infectious diseases in Jinshan District， blood-borne and sexually transmitted infectious diseases in Changning District， and insect-borne and natural focal infectious diseases in Yangpu District showed the highest incidence rate. Incidence of infectious diseases in 16 districts of Shanghai decreased with different degrees （all P<0.001）. Incidence of infectious diseases in males （209.44/105） was higher than that in females （164.89/105） （χ2=624.864， P<0.001）. Children aged 0-9 years had the highest incidence of respiratory and intestinal infectious diseases. People aged 70‒79 years and 20‒29 years had higher incidence of blood-borne and sexually transmitted infectious diseases， and people aged 20‒29 years had the highest incidence of insect-borne and natural focal infectious diseases. Majority of the patients were students （8 327 cases， 18.27%）， retired people （6 393 cases， 14.03%） and unemployed household workers （5 988 cases， 13.14%）. ConclusionUnder the COVID-19 prevention and control policies， the incidence of most NIDs in Shanghai decreased significantly in 2020.

Application of the second derivative-based small monitor unit beam deletion optimization to CyberKnife planning of heads / 中华放射医学与防护杂志

Objective:To investigate the effects of different small monitor unit (MU) beam deletion optimization method in the CyberKnife treatment planning system on the calculated planned dose to brain tumors.Methods:A total of 17 patients with brain metastases treated in our hospital from June, 2021 to February, 2022 were selected for this study. A treatment plan was designed for each patient using the multiPlan system in the CyberKnife VSI system as the group without optimization. To improve the efficiency, the generated original plans should be optimized first by deleting some small MUs, forming an experience group and an optimization group for each patient. For the experience group, beams below 30 MU were deleted according to experience. For the optimization group, beams below the MU value calculated based on the second derivative method were deleted. Finally, the parameters of the two groups were statistically compared. The main evaluation parameters included the node number, the beam number, the total number of MUs, the estimated treatment duration, doses to 2% and 95% planning target volumes (PTV D2 and PTV D95), average dose to PTV ( Dmean), average dose to brain tissue ( Dmean-Brain), conformity index (CI), new conformity index (nCI), gradient index (GI), coverage, and the maximum doses to the brainstem and left and right lens ( Dmax-BS, Dmax-LL, and Dmax-RL), and the average doses to the dose shells 20 mm and 40 mm away from PTV (Shell20 and Shell40). Results:The two optimization method met the requirements for the prescription dose delivery to more than 98% PTV. There were statistical differences in the node number ( H = 7.97, P< 0.05) and estimated treatment duration ( H = 6.60, P < 0.05) among the group without MP optimization, the experience group, and the optimization group, with the estimated treatment duration and node number of the optimization group less than those of the group without MP optimization ( P < 0.05). There were no statistically significant differences in other parameters among the three groups ( P > 0.05). The PTV was moderately positively correlated with the treatment duration ( r=0.79, P < 0.01) and beam number ( r=0.78, P < 0.01) of the experience group, and was also moderately positively correlated with the treatment duration ( r=0.69, P < 0.01) and beam number ( r=0.71, P < 0.01) of the optimization group. Conclusions:For the CyberKnife planning of heads, the small MU beam deletion optimization method based on the second derivative can further shorten the treatment duration while ensuring no significant differences in the distribution of doses to organs at risk and targets. Moreover, this method is more effective in optimizing the plans for a large PTV volume.

Anti-cutaneous squamous cell carcinoma effect and mechanism of dihydrochromone-spliced polycyclic pyrrole-spiroepoxidole compound 3m / 中国药房

OBJECTIVE To study the effect and mechanism of dihydrochromone-spliced polycyclic pyrrole-spiroepoxidole compound 3m on cutaneous squamous cell carcinoma. METHODS Using human cutaneous squamous cell carcinoma A431 and Colo-16 cells as research subjects， CCK-8 assay was used to detect the effects of different concentrations of 3m （5， 10， 20， 40， 80 μmol/L） on the proliferation of A431 and Colo-16 cells after 24， 48 and 72 hours； the median inhibitory concentration （IC50） was calculated at 48 h of treatment. A431 and Colo-16 cells were divided into control group， 3m low-concentration and high- concentration groups （15， 30 μmol/L）. After treated with relevant drugs or culture medium for 48 h， the morphological changes of cells in each group were observed by inverted microscope. Clone formation rate， migration rate and number of cell invasions， cell cycle distribution and apoptosis rate were detected. The phosphorylation， or expression of Janus kinase 2/signal transducer and activator of transcription 3 （JAK2/STAT3） signaling pathway related proteins [JAK2， STAT3， B-cell lymphocyte-2 （Bcl-2）， Bcl-2- associated X protein （Bax）]， and their mRNA expression in cells were detected. RESULTS 3m could significantly inhibit the proliferation of A431 and Colo-16 cells after treated for 24， 48， 72 h （P＜0.01）， and IC50 of them were 20.36， 23.72 μmol/L， respectively. After 48 hours of treatment， compared with control group， A431 and Colo-16 cells arranged sparsely and loosely connected in 3m low-concentration and high-concentration groups. The clone formation rate， migration rate， number of cell invasions， mRNA expressions of JAK2， STAT3 and Bcl-2， the phosphorylation of JAK2 and STAT3， protein expression of Bcl-2 were significantly decreased/weakened （P＜0.01）. Proportion of cell cycle in G2 phase， apoptosis rate， protein and mRNA expression of Bax were increased significantly （P＜0.01）； and all the above effects were in dose-dependent manner. CONCLUSIONS 3m can inhibit the proliferation， clone formation， migration and invasion abilities of cutaneous squamous cell carcinoma A431 and Colo-16 cells in a dose-dependent manner， the mechanism of which may be associated with inhibiting the activity of JAK2/STAT3 signaling pathway， and inducing cell apoptosis.

Expression profiles and regulatory network of microRNA, long non-coding RNA and circular RNA in rat chronic stress depression model based on whole transcriptome technology / 解剖学报

[Abstract] Objective To explore the potential pathophysiological mechanism of depression by screening the expression profiles and competing endogenous RNA (ceRNA) regulatory network microRNA(miRNA), long non-coding RNA(lncRNA) and circular RNA (circRNA) in the hippocampus of chronic stress depression rat model. Methods Twelve SD rats were divided into blank group and model group. Chronic mild unpredictability stress (CUMS) was used to construct the rat model of depression. The whole transcriptome analysis was performed on the hippocampus of the rats, and the possible regulatory networks among lncRNA-miRNA-mRNA and circRNA-miRNA-mRNA were explored by bioinformatics method. Results According to the | fold change | ≥1. 5 and P≤0. 05, 29 differentially expressed miRNAs (21 up-regulated and 8 down-regulated), 686 differentially expressed lncRNAs (163 up-regulated and 523 down-regulated) and 8 differentially expressed circRNAs (3 up-regulated and 5 down-regulated) were identified. Gene Ontology (GO) and Kytot Encyclopedia of Genes and Genomes(KEGG) pathway analysis showed that the target genes of miRNAs were mainly enriched in the Golgi apparatus and calcium ion binding process in the cell membrane, the functions of lncRNAs target genes involved nucleic acid binding regulation, cytokine and protein ubiquitination, etc, and the functions of host genes of circRNAs were associated with cellular stimulation response, metabolic process, catalytic activity and other processes. The ceRNA network of lncRNAs and circRNAs showed complex interactions between non-coding RNA (ncRNA) and mRNA related to synaptic plasticity, such as protein Wnt-sa(WNT5a) and collagentype III alpha1(COL8a1) related to axon orientation and laminin A2(LAMA2) related to neurodevelopment. Conclusion The ceRNA network of lncRNA and circRNA shows that the complex interaction betweens ncRNA and mRNA is highly associated with the neuroplasticity, which support the neuroplasticity hypothesis of depression.

Significance of TERT promoter mutation in differential diagnosis of non-invasive inverted urothelial lesions of bladder / 中华病理学杂志

Objective: To investigate the gene mutation of telomerase reverse transcriptase (TERT) promoter in inverted urothelial lesions of the bladder and its significance in differential diagnosis. Methods: From March 2016 to February 2022, a total of 32 patients with inverted urothelial lesions diagnosed in Department of Pathology at Qingdao Chengyang People's Hospital and 24 patients at the Affiliated Hospital of Qingdao University were collected, including 7 cases of florid glandular cystitis, 13 cases of inverted urothelial papilloma, 8 cases of inverted urothelial neoplasm with low malignant potential, 17 cases of low-grade non-invasive inverted urothelial carcinoma, 5 cases of high-grade non-invasive inverted urothelial carcinoma, and 6 cases of nested subtype of urothelial carcinoma were retrospectively analyzed for their clinical data and histopathological features. TERT promoter mutations were analyzed by Sanger sequencing in all the cases. Results: No mutations in the TERT promoter were found in the florid glandular cystitis and inverted urothelial papilloma. The mutation rates of the TERT promoter in inverted urothelial neoplasm with low malignant potential, low grade non-invasive inverter urothelial carcinoma, high grade non-invasive inverted urothelial carcinoma and nested subtype urothelial carcinoma were 1/8, 8/17, 2/5 and 6/6, respectively. There was no significant difference in the mutation rate of TERT promoter among inverted urothelial neoplasm with low malignant potential, low-grade non-invasive inverted urothelial carcinoma, and high-grade non-invasive inverted urothelial carcinoma (P>0.05). All 6 cases of nested subtype of urothelial carcinoma were found to harbor the mutation, which was significantly different from inverted urothelial neoplasm with low malignant potential and non-invasive inverted urothelial carcinoma (P<0.05). In terms of mutation pattern, 13/17 of TERT promoter mutations were C228T, 4/17 were C250T. Conclusions: The morphology combined with TERT promoter mutation detection is helpful for the differential diagnosis of bladder non-invasive inverted urothelial lesions.

Chemical constituents of diterpenoids from Boswellia carterii / 中国中药杂志

This paper explored the chemical constituents of Boswellia carterii by column chromatography on silica gel, Sephadex LH-20, ODS column chromatography, and semi-preparative HPLC. The structures of the compounds were identified by physicochemical properties and spectroscopic data such as infrared radiation(IR), ultra violet(UV), mass spectrometry(MS), and nuclear magnetic resonance(NMR). Seven diterpenoids were isolated and purified from n-hexane of B. carterii. The isolates were identified as(1S,3E,7E,11R,12R)-11-hydroxy-1-isopropyl-4,8,12-trimethyl-15-oxabicyclo[10.2.1]pentadeca-3,7-dien-5-one(1),(1R,3S,4R,7E,11E)-4,8,12,15,15-pentamethyl-14-oxabicyclo[11.2.1]hexadeca-7,11-dien-4-ol(2), incensole(3),(-)-(R)-nephthenol(4), euphraticanoid F(5), dilospirane B(6), and dictyotin C(7). Among them, compounds 1 and 2 were new and their absolute configurations were determined by comparison of the calculated and experimental electronic circular dichroisms(ECDs). Compounds 6 and 7 were obtained from B. carterii for the first time.

A diagnostic prediction model for hypertension in Han and Yugur population from the China National Health Survey (CNHS) / 中华医学杂志(英文版)

BACKGROUND@#The prevalence of hypertension is high among Chinese adults, thus, identifying non-hypertensive individuals at high risk for intervention will help to improve the efficiency of primary prevention strategies.@*METHODS@#The cross-sectional data on 9699 participants aged 20 to 80 years were collected from the China National Health Survey in Gansu and Hebei provinces in 2016 to 2017, and they were nonrandomly split into the training set and validation set based on location. Multivariable logistic regression analysis was performed to develop the diagnostic prediction model, which was presented as a nomogram and a website with risk classification. Predictive performances of the model were evaluated using discrimination and calibration, and were further compared with a previously published model. Decision curve analysis was used to calculate the standardized net benefit for assessing the clinical usefulness of the model.@*RESULTS@#The Lasso regression analysis identified the significant predictors of hypertension in the training set, and a diagnostic model was developed using logistic regression. A nomogram with risk classification was constructed to visualize the model, and a website ( https://chris-yu.shinyapps.io/hypertension_risk_prediction/ ) was developed to calculate the exact probabilities of hypertension. The model showed good discrimination and calibration, with the C-index of 0.789 (95% confidence interval [CI]: 0.768, 0.810) through internal validation and 0.829 (95% CI: 0.816, 0.842) through external validation. Decision curve analysis demonstrated that the model was clinically useful. The model had a higher area under receiver operating characteristic curves in training and validation sets compared with a previously published diagnostic model based on Northern China population.@*CONCLUSION@#This study developed and validated a diagnostic model for hypertension prediction in Gansu Province. A nomogram and a website were developed to make the model conveniently used to facilitate the individualized prediction of hypertension in the general population of Han and Yugur.

Metabolomic study on clinical staging of methamphetamine detoxification by LC-QTOF-MS / 中国药科大学学报

@#At present , methamphetamine has become a major hidden danger in global public health safety. In order to judge methamphetamine addicts and methamphetamine abstainers more scientifically and reliably, this study analyzed the endogenous metabolites in plasma, serum and urine of methamphetamine addicts, methamphetamine abstainers and healthy volunteers by highly sensitive high-throughput liquid chromatography quadrupole time-of-flight mass spectrometry (LC-QTOF-MS) analytical instrument. The obtained metabolomic data were processed by univariate analysis (t-test) and multivariate analysis (PLS-DA and OPLS-DA) and eligible potential biomarkers were then screened.The identified biomarkers set enrichment analysis to find the connection between metabolites and metabolic pathways.Multivariate statistical results showed that methamphetamine acute group, recovery group and healthy group were clearly separated.3, 18 and 6 regulated metabolites were identified in serum, plasma and urine, respectively, suggesting that lipid metabolism was abnormal in methamphetamine acute group, and that fatty acid metabolism, sulfate/sulfite metabolism and sex hormone metabolism were abnormal in methamphetamine recovery group.The selected potential biomarkers in this study provide the possibility for scientific judgment of the clinical stage of methamphetamine detoxification.

The respiratory synchronization tracking effect of Cyberknife stereotactic body radiotherapy with the diaphragm as the tracking target / 肿瘤研究与临床

Objective:To investigate the consistency and correlation of the respiratory synchronization tracking and fiducial marker respiratory synchronization tracking in the Cyberknife stereotactic body radiotherapy (SBRT) with the diaphragm as the tracking target.Methods:A total of 11 patients hospitalized at Union Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology from April 2018 to November 2019 were enrolled, including 8 cases of lung cancer, 2 cases of liver cancer with lung metastasis and 1 case of colorectal cancer with lung metastasis. All enrolled cases used fiducial marker tracking plan (RT) and diaphragm contour tracking plan (DT), and then all received tumor visualization simulation tests. Bland-Altman method was used to make the consistency analysis of the offset in the visualization tests process of 2 tracking plans at each respiratory time point. The minimum tolerance distance, uncertainty and average standard deviation and maximum standard deviation in the optimal model state plans were compared between the both plans by using t test. Results:Compared with RT, the translational standard deviations of DT tracking were listed as follows: head-foot direction (0.4±2.9) mm, left-right direction (0.3±4.4) mm, anterior-posterior direction (-1.8±6.8) mm. The Bland-Altman method showed that the consistency between RT and DT was better in the head-foot and left-right directions, and worse in the anterior-posterior direction; the synchronization was only better in the head-foot direction, and worse in both the left-right and anterior-posterior directions. Results of the model quality comparison showed that the uncertainty of RT was higher than that of DT, and the difference was statistically significant [(23±6)% vs. (9±4)%, t=-5.24, P = 0.001], while the differences of the minimum tolerance distance, average standard deviation and maximum standard deviation were not statistically significant (all P>0.05). Conclusions:Patients who use respiratory synchronization Cyberknife SBRT with the diaphragm as the tracking target have better consistency and synchronization in the head-foot direction, but worse in the left-right and anterior-posterior directions. Under the corresponding marginal margin of the target area in the left-right direction, for tumors near the diaphragm that are not visible in the visual test, it is potentially feasible to use the diaphragm as a tracking target to implement respiratory synchronization SBRT. For larger motion amplitudes in the left-right and anterior-posterior directions, more caution is required.

Effect of electrical stimulation on lipopolysaccharide-induced activation of M1 microglia / 中华麻醉学杂志

Objective:To evaluate the effect of electrical stimulation on lipopolysaccharide (LPS)-induced activation of M1 microglia.Methods:The well-growing BV2 microglia cells were divided into 3 groups ( n=18 each) using a random number table method: control group (group C), group LPS, LPS and electrical stimulation group (group LE). The cells were cultured for 24 h in normal culture atmosphere in group C. In group LPS and group LE, the LPS medium culture 100 ng/ml was added, and the cells were cultured for 24 h. In group LE, cells were stimulated with 100 mV/mm direct current for 4 h before LPS incubation.The levels of tumor necrosis factor-α (TNF-α) and leukocyte interleukin-1β (IL-1β) were determined by enzyme-linked immunosorbent assay.The expression of the M1 microglia surface markers CD32 and inducible nitric oxide synase (iNOS) was detected using immunofluorescent staining.The expression of CD32 and iNOS mRNA was detected using quantitative real-time polymerase chain reaction. Results:Compared with group C, the concentrations of TNF-α and IL-1β were significantly increased, and the expression of CD32 and iNOS protein and mRNA was up-regulated in LPS and LE groups ( P<0.05). Compared with group LPS, the concentrations of TNF-α and IL-1β were significantly decreased, and the expression of CD32 and iNOS protein and mRNA was down-regulated in group LE ( P<0.05). Conclusions:Electrical stimulation can inhibit LPS-induced activation of M1 microglia and thus alleviate the inflammatory responses.

Comparative Analysis of Lonicera japonica Flower from Different Harvesting Periods Based on UV Fingerprint and Chemometrics / 中国实验方剂学杂志

ObjectiveTo investigate the quality variation of Lonicera japonica flower from different harvesting periods by ultraviolet visible（UV-Vis） fingerprint combined with chemometrics. MethodTwenty-five L. japonica flower samples from five harvesting periods， including young bud stage，green bud stage，white bud stage，silver and golden flower stages， were collected， with five samples for each stage. UV-Vis fingerprints of L. japonica flower from different harvesting periods were established in the context of the optimum extraction method based on the single factor experiment. The results showed that the absorption values at 209，216，226，250，280，303，318， and 350 nm were significantly different. Moreover，after data pretreatment and normalization，multivariate statistical analyses， such as principal component analysis （PCA），partial least squares discriminant analysis （PLS-DA），and orthogonal PLS-DA （OPLS-DA）were performed by SIMCA-P+ to establish the quality variation model of L. japonicas flower from harvesting periods. ResultAs revealed by PCA and PLS-DA， L. japonicas flower samples from five harvesting periods were clustered separately and closely in a harvesting time-dependent manner， suggesting that the content of components contained in samples from different harvesting periods was highly distinct and correlated with harvesting periods. The pairwise comparison of OPLS-DA indicated that triterpenoids or volatile oils were the main components causing the changes from the young bud stage to the green bud stage，and the content of them decreased. The main components from the green bud stage to the white bud stage were triterpenoids （or iridoids），volatile oils，phenolic acids， or flavonoids，and the content of them decreased， which was consistent with the HPLC result of chlorogenic acid. From the white bud stage to the silver flower stage， the main components were iridoids （increasing in content） and triterpenoids （or volatile oils） （decreasing in content）. The main altered components from the silver flower stage to the golden flower stage were triterpenoids （or volatile oils） whose content increased. ConclusionThis method is simple and feasible， which can provide references for the quality control of Chinese medicine.