Bipolar HF leakage current testing was carried out for two pieces of HF surgical equipment respectively by using a combination of different equipment and different connection methods according to the test method in GB 9706.202-2021 Medical electrical equipment-Part 2-2:Particular requirements for the basic safety and essential performance of high frequency surgical equipment and high frequency surgical accessories.It's pointed out relatively accurate measurements could be obtained when the HF analyzer was accessed to the circuit only as a test resistor and/or ammeter.References were provided for bipolar HF leakage current detection in HF surgical equipment.[Chinese Medical Equipment Journal,2024,45(4):88-92]

Recent clinical studies have shown that mutation of phosphatase and tensin homolog deleted on chromosome 10 (PTEN) gene in cancer cells may be associated with immunosuppressive tumor microenvironment (TME) and poor response to immune checkpoint blockade (ICB) therapy. Therefore, efficiently restoring PTEN gene expression in cancer cells is critical to improving the responding rate to ICB therapy. Here, we screened an adeno-associated virus (AAV) capsid for efficient PTEN gene delivery into B16F10 tumor cells. We demonstrated that intratumorally injected AAV6-PTEN successfully restored the tumor cell PTEN gene expression and effectively inhibited tumor progression by inducing tumor cell immunogenic cell death (ICD) and increasing immune cell infiltration. Moreover, we developed an anti-PD-1 loaded phospholipid-based phase separation gel (PPSG), which formed an in situ depot and sustainably release anti-PD-1 drugs within 42 days in vivo. In order to effectively inhibit the recurrence of melanoma, we further applied a triple therapy based on AAV6-PTEN, PPSG^@anti-PD-1 and CpG, and showed that this triple therapy strategy enhanced the synergistic antitumor immune effect and also induced robust immune memory, which completely rejected tumor recurrence. We anticipate that this triple therapy could be used as a new tumor combination therapy with stronger immune activation capacity and tumor inhibition efficacy.

OBJECTIVE To establish the fingerprints of Tianma jiannao granules （TJG） and the method for content determination to evaluate the quality of TJG comprehensively combined with chemometric analysis. METHODS High-performance liquid chromatography （HPLC） was used to establish the fingerprints of 13 batches （S1-S3） of TJG and determine the contents of inosine， gastrodin， parishin B and parishin E. Cluster analysis， principal component analysis， and orthogonal partial least squares- discriminant analysis were performed using SPSS 20.0 and SIMCA 18 software； using variable importance projection （VIP） value greater than 1 as a criterion， marker components that affected quality were screened. RESULTS A total of 28 common peaks were identified in the 13 batches of TJG with similarities greater than 0.9， and 7 common peaks were identified， which were gastrodin， p-hydroxybenzyl alcohol， parishin B， parishin E， rhynchophylline， inosine and salidroside. The 13 batches of TJG were clustered into 3 categories， S1-S2， S8-S10 and S12 were clustered into one category； S3 and S7 were clustered into one category； S4-S6， S11 and S13 were clustered into one category. VIP of inosine was greater than 1. The contents of inosine， gastrodin， parishin B and parishin E were 62.637-176.677， 17.821-37.642， 5.748-16.077 and 5.660-13.510 μg/g. CONCLUSIONS The established HPLC fingerprints and content determination method are stable， reliable and highly reproducible， which can be used to evaluate the quality of TJG in combination with chemometric analysis. Inosine may be a marker component that affects the quality of TJG. There are differences in the quality of 13 batches of TJG.

The coronary artery disease is a frequent severe disease of cardiovascular system in recent years. Meanwhile, lung cancer, with its high morbidity and mortality, is the most frequent malignant tumor of respiratory system in the world. Clinical studies have shown that the incidence of coronary artery disease and lung cancer is high throughout the year, and comorbidities are becoming more common, especially in elderly patients. The incidence of lung cancer and coronary heart disease may be related. This article summarizes the common risk factors (smoking and environmental pollution, fibrinogen, estrogen, and age), and treatment (surgical treatment, neoadjuvant therapy, and targeted therapy) progress of the two diseases, providing a theoretical basis for clinical prevention and treatment.

Objective:To analyze the comorbidity status and influencing factors of hypertension, diabetes, and dyslipidemia among middle-aged and elderly in Jiangsu Province and to provide support for "co-management of the three diseases".Methods:Data originated from the Comprehensive Prevention and Control Project of Cardiovascular and Cerebrovascular Diseases baseline survey in Jiangsu Province. Questionnaire interviews, physical examinations, and laboratory tests were conducted on 136 433 permanent residents aged ≥35 years who participated in the survey from 2021 to 2023. A multinomial logit model was established using SPSS 23.0 to analyze the influencing factors of the three comorbidities.Results:The comorbidity rate of hypertension, diabetes, and dyslipidemia among middle-aged and older adults in Jiangsu Province was 7.3%. Hypertension combined with dyslipidemia was the main comorbidity pattern, and patients with diabetes accounted for the largest proportion. Multinomial logistic regression analysis showed that the risk of being two types of the three comorbidities was higher in male, aging, urban residents, and those with high/technical secondary school, higher frequency of cigarette smoking and alcohol drinking, and longer daily sedentary time; the risk was lower in those with higher the level of physical activity and longer daily sleep time. Among the three types of comorbidities, males with aging, high/technical secondary school, regular smoking/quitting, higher frequency of alcohol drinking, and longer daily sedentary time had higher risk; those with an annual family income of 30 000-99 999 RMB, higher level of physical activity, and the daily sleep time of 7 hours had the lower risk (all P<0.05). Conclusions:The prevention and control of the three comorbidities among middle-aged and older adults in Jiangsu Province still needs strengthening. High-risk groups for the three diseases and comorbidities, such as males, low-income , and high/technical secondary school should be focused on. Middle-aged and older adults are suggested to increase daily physical activity, reduce daily static time, reasonably arrange sleep duration, and quit smoking and drinking as early as possible to maintain a healthy weight.

Objective To investigate the immunotoxicity effect of triphenyl phosphate (TPHP) on thymus tissue of mice, and analyze the related mechanism. Methods Specific pathogen free BALB/c mice were randomly divided into control group, low-, medium- and high-dose groups, with 12 mice per group (equal gender distribution). Mice in these four groups were orally administered doses of 0, 1, 10, and 150 mg/kg body weight of TPHP daily for 60 days. After the exposure, the complete blood count of mice was detected, thymus tissue was collected, coefficient of thymus organs was calculated, and the histopathology changes of thymus were observed. Real-time quantitative polymerase chain reaction was used to assess the expression of genes related to inflammation, oxidative stress, cellular autophagy, and apoptosis in thymic tissues. Results During the exposure period, male mice in the high-dose group had poor fur condition, whisker loss, and increased irritability, while these phenomena were not observed in female mice. At the end of the exposure period, there were no significant changes in mice body weight or thymus organ coefficients among the groups. However, male mice in the high-dose group showed cellular apoptotic changes in the thymic tissue. The amount of white blood cell, lymphocyte, neutrophil granulocyte, red blood cell distribution width, platelet and the plateletcrit of male mice was lower in the high-dose group than that in the control group (all P<0.05). The relative mRNA expression of interleukin (Il)-1β, Il-6, catalase (Cat), P62, as well as the ratio of B-cell lymphoma 2 (Bcl-2) associated X protein (Bax)/Bcl-2 in thymic tissue of male mice were higher in the low-dose group than that in the control group (all P<0.05). The relative mRNA expression of nuclear factor erythroid-2 related factor 2 (Nrf2), superoxide dismutase 1 (Sod1), glutathione peroxidase 1 (Gpx1), P62, as well as the ratio of Bax/Bcl-2 in the thymic tissue of male mice were higher in the medium-dose group than that in the control group (all P<0.05). The relative mRNA expression of Nrf2, Cat, Sod1, Gpx1, P62, cysteinyl aspartate specific proteinase-3, as well as the ratio of Bax/Bcl-2 in the thymic tissue of male mice were higher in the high-dose group than that in the control group (all P<0.05). The relative mRNA expression of Il-1β and the ratio of Bax/Bcl-2 in thymic tissue of female mice were higher in the low- and medium-dose group (all P<0.05), while the relative mRNA expression of interferon-γ, Nrf2, Cat, P62, microtubule-associated protein light chain 3, as well as the ratio of Bax/Bcl-2 in thymic tissue of female mice were higher in the high-dose group than that in the control group (all P<0.05). Conclusion Although TPHP exposure had not significantly affected the body weight, thymus organ coefficient and histopathology of mice, it induced changes in oxidative stress-related indicators in thymic tissue, promoted cellular autophagy, apoptosis, and inflammation in the thymic tissue, with observed gender difference.

Aim To explore the effect and mechanism of the artesunate(ART)on hepatocellular carcinoma(HCC).Methods The cell lines MHCC-97H and HCC-LM3 were used to be detected.MTT and clone formation were used to determine the cell proliferation;Wound healing was used to detect the cell migration;Transwell was used to test the cell invasion.Flow-cy-tometry was used to detect cell apoptosis and cell cy-cle.RNA-seq and qRT-PCR was used to detect the genes expression.Results The proliferation,migra-tion and invasion of treated cells were obviously inhibi-ted(P＜0.01).Moreover,the apoptosis rate in-creased significantly,so did the proportion of G2/M cells.Transcriptomic analysis identified GADD45A as a potential target of ART through RNA-sequencing da-ta,and suggested that ART might induce apoptosis and cell cycle arrest through regulating the expression of GADD45A.In addition,the results of mechanism studies and signaling analysis suggested that GADD45A had interaction with its upstream gene NACC1(nucle-us accumbens associated 1).Moreover,after ART treatment,the expressions of GADD45A and NACC1 were changed significantly.Conclusion ART may be a potential drug to resist HCC by affecting the expres-sion of GADD45A and its upstream gene NACC1,which provides a new drug,a new direction and a new method for the clinical treatment of HCC.

OBJECTIVE: To observe the effect of fire needling on prostate symptoms, quality of life, average daily number of nightly urination, urine flow rate and prostat volume in patients with mild to moderate benign prostatic hyperplasia (BPH) of kidney yang deficiency. METHODS: A total of 60 patients with mild to moderate BPH of kidney yang deficiency were randomly divided into an observation group (30 cases, 3 cases dropped off) and a control group (30 cases, 4 cases dropped off). The observation group was treated with fire needling at Guanyuan (CV 4), Shuidao (ST 28) and Qugu (CV 2) twice a week (2-3 d interval between each treatment), continuous treatment for 4 weeks. The control group received lifestyle advice and education, once a week for 4 weeks. In the two groups, the international prostate symptom score (IPSS), the quality of life (QoL) score and the average daily number of nightly urination were observed before treatment, after treatment and during the follow-up of the 4th week; the urinary maximum flow rate (Qmax), the average flow rate (Qave), and the prostate volume were assessed before and after treatment in the two groups. The safety was observed in the observation group. RESULTS: After treatment and during follow-up, the IPSS scores, QoL scores, and the average daily number of nightly urination in the observation group were decreased compared with those before treatment (P<0.05), and those in the observation group were lower than the control group (P<0.05). After treatment, there was no significant difference in Qmax, Qave and prostate volume between the two groups and within the each group (P>0.05). There were no fire needling-related adverse reactions, and no obvious abnormality was found in urine routine and coagulation function tests before and after treatment in the observation group. CONCLUSION Fire needling can improve lower urinary tract symptoms and quality of life, reduce frequency of nightly urination in patients with mild to moderate BPH of kidney yang deficiency, and has good safety.
Male ; Humans ; Prostatic Hyperplasia/therapy* ; Quality of Life ; Yang Deficiency ; Treatment Outcome ; Kidney

Nanometer materials have attracted much attention in the nanomedical field due to their unique physicochemical properties. Calcium phosphate nanoparticles have many advantages, such as non-toxicity, unique biomolecular protection, good biodegradability, and good biocompatibility. It has been widely studied as an ideal delivery system for biomacromolecules. In this review paper, the synthesis methods of calcium phosphate nanoparticles were summarized, including the conventional hydrothermal/solvothermal method and the aqueous wet chemical precipitation method. Moreover, the ways of binding calcium phosphate nanoparticles to biomacromolecule antigens were discussed from the perspectives of covalent and non-covalent binding, and their application in biomacromolecule delivery systems was described. The above review comments have important reference value for understanding the potential and application prospects of calcium phosphate nanoparticles in nanomedicine.

【Objective】 To explore the intention of voluntary blood donation in students from a middle vocational school in Jinhua and its influencing factors. 【Methods】 A total of 400 students were enrolled from a middle vocational school in Jinhua by convenience sampling, and a self-designed questionnaire was issued to each student to investigate the cognition, intention and attitude of voluntary blood donation. The influencing factors of voluntary blood donation intention were analyzed by Logistic regression. 【Results】 A total of 394 valid questionnaires(98.50%) were collected. For 394 surveyed students, the average score of cognition of voluntary blood donation was (7.27±2.69) points, and the overall rate of intention to voluntary blood donation was 21.32%. Logistic regression analysis equation consisted of family support, better cognition, feeling happy about blood donation and worrying about blood donation, with risk ratios(OR) as 31.78, 188.69, 26.27 and 0.01, respectively(all P<0.05). 【Conclusion】 Students from a middle vocational school showed poor congnition and intention of voluntary blood donation.Family support for voluntary blood donation, better cognition of voluntary blood donation and happiness for blood donation were positive factors, and the fear of blood donation was a negative factor.It is necessary to strengthen the publicity of blood donation among students in middle vocational school to improve their congnition and intention to voluntary blood donation.