Objective:To analyze the eye lens dose and annual effective dose to interventional radiation workers in some hospitals of Xinxiang city from 2020 to 2022, and to ascertain the dose to interventional radiation workers.Methods:By using TLDs, the eye lens dose Hp(3) and annual effective dose Hp(10) were monitored for three consecutive years in six hospitals in Xinxiang city. The lens doses and annual effective doses to intervention radiation workers in different years in different-level hospitals and departments were analyzed. Results:From 2020 to 2022, a total of 117 people were monitored. The left eye lens dose range was 0.12-164.24 mSv, and the right eye lens dose range was 0.07-51.64 mSv. The average annual dose was 8.56 mSv for left eye lens and 4.49 mSv for right eye lens The average annual dose distribution in the MDL-5 mSv range for the left and right eye lens was 60.68% and 73.50%, respectively. 9.41% (11 people) of the left eye lens doses exceeded 20 mSv. The annual effective doses range was 0.11-31.27 mSv, with average annual dose of 2.56 mSv. The proportion of average annual effective doses mainly distributed in the range of MDL to 1.25 mSv was 52.14%, with 2.56% annual effective dose exceeding 20 mSv. There was no significant difference in left and right eye lens dose and annual effective dose between the tertiary hospitals and the secondary hospitals in three years ( P>0.05). Compared with different departments, the cumulative per capita dose in three years was statistically significant (left eye H=11.42, right eye H=13.72, annual effective dose H=25.94, P<0.05). The lens dose and annual effective dose in neurology department were lower than those in cardiology department and comprehensive intervention department ( Zcardiology department=-3.33, -3.78, -4.83, P<0.05; Zcomprehensive intervention department=-2.71, -2.63, -4.39, P<0.05). Conclusions:Most of the annual equivalent dose and annual effective dose to eye lens of the interventional radiation workers in Xinxiang city meet the national limits, but some of them have higher doses and exceed the national limits. It is suggested that the routine and continuous monitoring of eye lens doses to interventional radiologists should be strengthened while routine monitoring of annual effective dose, and attention should be paid to the eye lens and annual effective dose to interventional radiologists in secondary hospitals to improve the awareness of protection.

【Objective】 To establish a nomogram model for predicting the risk of positive prostate biopsy in MRI-negative patients, and to perform the internal validation. 【Methods】 We retrospectively analyzed the clinical data of 197 MRI-negative patients who underwent prostate biopsy at our hospital, analyzed the independent predictors of positive prostate biopsy with univariate and multivariate logistic regression analysis, constructed the nomogram model and conducted internal validation. 【Results】 Multivariate logistic regression analysis showed age (P=0.003), digital rectal examination (DRE)(P=0.005), total prostate-specific antigen (tPSA) (P=0.001) and prostate volume (PV)(P<0.001) were independent risk factors of MRI-negative but prostate biopsy-positive results. The nomogram model based on all variables was established. The area under the receiver operating characteristic (ROC) curve (AUC) was 0.862, which was greater than that of tPSA (AUC=0.739), PV(AUC=0.711) and DRE(AUC=0.666) (all P<0.05). The average absolute error of the model was 1.1% after 500 internal resampling, indicating that the prediction of positive prostate biopsy was consistent with the actual situation. 【Conclusion】 The age, DRE, tPSA and PV were independent predictors of positive prostate biopsy in MRI-negative patients. The nomogram model has a good prediction performance.

Drastic surges in intracellular reactive oxygen species (ROS) induce cell apoptosis, while most chemotherapy drugs lead to the accumulation of ROS. Here, we constructed an organic compound, arsenical N-‍(4-(1,3,2-dithiarsinan-2-yl)phenyl)acrylamide (AAZ2), which could prompt the ROS to trigger mitochondrial-dependent apoptosis in gastric cancer (GC). Mechanistically, by targeting pyruvate dehydrogenase kinase 1 (PDK1), AAZ2 caused metabolism alteration and the imbalance of redox homeostasis, followed by the inhibition of phosphoinositide-3-kinase (PI3K)/protein kinase B (AKT)/mammalian target of rapamycin (mTOR) pathway and leading to the activation of B-cell lymphoma 2 (Bcl2)/Bcl2-associated X (Bax)/caspase-9 (Cas9)/Cas3 cascades. Importantly, our in vivo data demonstrated that AAZ2 could inhibit the growth of GC xenograft. Overall, our data suggested that AAZ2 could contribute to metabolic abnormalities, leading to mitochondrial-dependent apoptosis by targeting PDK1 in GC.
Humans ; Signal Transduction ; Stomach Neoplasms/drug therapy* ; Reactive Oxygen Species/metabolism* ; Proto-Oncogene Proteins c-akt/metabolism* ; Apoptosis ; Proto-Oncogene Proteins c-bcl-2 ; Cell Line, Tumor

Poria is an important medicine for inducing diuresis to drain dampness from the middle energizer. However, the specific effective components and the potential mechanism of Poria remain largely unknown. To identify the effective components and the mechanism of Poria water extract (PWE) to treat dampness stagnancy due to spleen deficiency syndrome (DSSD), a rat model of DSSD was established through weight-loaded forced swimming, intragastric ice-water stimulation, humid living environment, and alternate-day fasting for 21 days. After 14 days of treatment with PWE, the results indicated that PWE increased fecal moisture percentage, urine output, D-xylose level and weight; amylase, albumin, and total protein levels; and the swimming time of rats with DSSD to different extents. Eleven highly related components were screened out using the spectrum-effect relationship and LC-MS. Mechanistic studies revealed that PWE significantly increased the expression of serum motilin (MTL), gastrin (GAS), ADCY5/6, p-PKAα/β/γ cat, and phosphorylated cAMP-response element binding protein in the stomach, and AQP3 expression in the colon. Moreover, it decreased the levels of serum ADH, the expression of AQP3 and AQP4 in the stomach, AQP1 and AQP3 in the duodenum, and AQP4 in the colon. PWE induced diuresis to drain dampness in rats with DSSD. Eleven main effective components were identified in PWE. They exerted therapeutic effect by regulating the AC-cAMP-AQP signaling pathway in the stomach, MTL and GAS levels in the serum, AQP1 and AQP3 expression in the duodenum, and AQP3 and AQP4 expression in the colon.
Animals ; Rats ; Poria ; Spleen ; Albumins ; Chromatography, Liquid ; Cyclic AMP Response Element-Binding Protein

Hepatic ischemia-reperfusion injury (HIRI) is a very common complication of liver transplantation, liver resection, and shock. At present, many studies have been conducted on HIRI, but there is still a lack of drugs for radical treatment in clinical practice. Many factors, such as related cells, molecular mechanisms and signaling pathways, reactive oxygen species and oxidative stress response, nitric oxide, and mitochondria, mediate the development and progression of HIRI, which leads to the decline of patients' quality of life and even endangers their life safety. Based on the pathogenesis of HIRI and related articles, this article summarizes the research advances in the prevention and treatment of HIRI with traditional Chinese medicine components, so as to provide theoretical support for basic research and clinical research on HIRI.

ObjectiveTo discuss the relationship between objective sleep quality and cognitive function in remission depression patients with insomnia. MethodsA total of 47 patients with depression in remission in Beijing Huilongguan Hospital were enrolled. Insomnia Severity Index （ISI） and the sleep efficiency calculated by the first four items of Pittsburgh Sleep Quality Index （PSQI） were defined as insomnia. Among the selected patients， 22 subjects were classified into insomnia group， and 25 subjects in non-insomnia group. The objective sleep status of all subjects was evaluated by polysomnography （PSG）， and the cognitive function was evaluated with the Repeatable Battery for Assessment of Neuropsychological Status （RBANS）. A regression model was established to explore the relationship between objective sleep quality and cognitive function in remission depression patients with insomnia. ResultsThere was statistically significant difference in immediate memory factor scores of RBANS between depression patients in remission with and without insomnia （t=-2.102， P<0.05）. The sleep efficiency （Z=-2.113， P<0.05）， the proportion of N3 sleep stage （Z=-3.175， P<0.01） and the duration of N3 sleep stage （Z=-3.196， P<0.01） in insomnia group were all lower than those in non-insomnia group， and the nocturnal awakening （Z=-2.058， P<0.01）， the proportion of N1 sleep stage （Z=-2.399， P<0.05） and the duration of N1 sleep stage （Z=-2.463， P<0.05） were higher than those of the insomnia group. Within insomnia group， the increased proportion of REM sleep was correlated with the improvement of attention function （β=0.953， 95% CI： 0.123~2.038， P<0.05）， and the increase of nocturnal awakening was correlated with the decline of delayed memory （β=-0.173， 95% CI： -0.325~-0.024， P<0.05）. ConclusionObjective sleep is associated with cognitive impairment in remission depression patients with insomnia， the proportion of REM sleep has a positive impact on attention function， and frequent nocturnal awakening at night has a negative impact on delayed memory.

Objective:To carry out investigation and analysis of an extensive skin radiation injury to the back accidentally caused by interventional procedure and to explore the problems faced in the event with emphasis on avoiding the reoccurance of similar events in the future.Methods:The data were collected by consulting the patient′s detailed medical history, collecting and analyzing clinical diagnosis and treatment data, tracking and observing their clinical manifestations and signs. The patient′s peripheral blood samples were also collected, together with the biological dose estimated and the equipment data collected on the site of the interventional treatment hospital.Results:The whole body dose to the patient was estimated to be 0.95 Gy. The typical values of kerma rate of radiation incident on the body surface due to fluoroscopic procedures were 373.5 mGy/min in subtraction modality and 47.8 mGy/min in fluoroscopy modality, respectively. The annual effective dose to the interventional radiologist was 20.51 mSv due to his operation in long-time radiation exposure conditions, higher than 3.09 mSv for other interventional radiologists with similar workload in the same department. The whole body and local clinical manifestations of the patients were in line with radiation injury. No clear diagnosis has been obtained in several hospitals, nor can obvious treatment outcomes be obsevered.Conclusion:Combined with the biological dose estimation result and clinical manifestations, the case was diagnosed as degree Ⅳ skin radiation injury. Radiation injury is closely related to whether the operation is conducted according to the standard and the output dose of X-ray machine. Non-specialized hospitals should strengthen clinical diagnosis and treatment of radiation injury.

OBJECTIVE：To study the repa ir，anti-inflammatory and analgesic effects of Compound crocodile oil burn ointment on superficial second-degree burned skin. METHODS ：The heated weight was attached to the right depilated skin of guinea pigs for 4 s to induce the model of superficial second-degree burn. After modeling ，guinea pigs were randomly divided into model group ， Jingwanhong ointment group （positive control ），formula Ⅰ，Ⅱ and Ⅲ groups of Compound crocodile oil burn ointment （volume fraction 1.5％，3％，4.5％，hereinafter），with 8 guinea pigs in each group. Except for model group ，other groups were smeared with 0.7 g/guinea pigs twice a day for 14 consecutive days. The wound healing was recorded every day ，the healing rate of wound was calculated. HE staining was used to observe the histopathological changes of the wound. The serum levels of EGF ，VEGF， SOD，MDA，TNF-α and IL-1 were detected by ELISA. Eighty Kunming mice were divided into 2 groups，and then sub-grouped into model group ，Jingwanhong ointment group （positive control ），formula Ⅰ and Ⅲ groups of Compound crocodile oil burn ointment，with 10 mice in each group. Then xylene auricle swelling method and acetic acid writhing method were used to investigate the anti-inflammatory and analgesic effects of Compound crocodile oil burn ointment. RESULTS ：In the burn repair experiment，after intervention of Compound crocodile oil burn ointment ，the wound area of guinea pigs gradually decreased ，and on the 14th day ，the wound had healed greatly ，and the wound healing rate increased significantly （P＜0.01）；serum levels of EGF and SOD were increased significantly （P＜0.01），while the levels of VEGF ，MDA，TNF-α and IL-1 were decreased significantly（P＜0.05 or P＜0.01）. The thick new epidermal layer was found in wound tissue ，and the connective tissue and neovascularization in the dermis increased significantly. In the anti-inflammatory and analgesic experiment ，after intervention of Compound crocodile oil burn ointment ，the degree of ear swelling and the times of writhing decreased significantly （P＜0.05 or P＜0.01）. CONCLUSIONS ：Compound crocodile oil burn ointment shows good skin repair ，anti-inflammatory and analgesic efficacy；the mechanism may be associated with increasing the serum levels of EGF and SOD and reducing the levels of VEGF ， MDA，TNF-α，IL-1.

OBJECTIVE：To establis h the UPLC fingerprint of Poria co cos aqueous extract ，and to investigate its relationship with sedative and hypnotic effect. METHODS ：Ten batches of P. cocos from different areas were extracted with water to obtain the aqueous extract. UPLC method was adopted. The determination was performed on Waters HSS-C 18 column with mobile phase consisted of 0.1％ phosphoric acid solution-acetonitrile-methanol （gradient elution ） at the flow rate of 0.4-0.2 mL/min. The detection wavelengths were set at 210 and 242 nm. The column temperature was 40 ℃，and sample size was 2 μL. The fingerprints of 10 batches of P. cocos aqueous extracts were established by using the Similarity Evaluation System of TCM Fingerprint （2012A version），and the common peaks were identified. The sedative and hypnotic effects of 10 batches of P. cocos aqueous extracts from different areas under the synergistic action of pentobarbital sodium were investigated by taking the sleeping rate ，sleep latency and sleep duration of mice as the single efficacy index. After data transformation of single efficacy index and total efficacy （single indexes calculated by analytic hierarchy process ），grey correlation analysis was used to analyze the correlation between the common peaks in fingerprint of P. cocos aqueous extract and the single efficacy index and total efficacy. RESULTS ：There were 24 common peaks in 10 batches of aqueous extract of P. cocos ， and 11 components were identified ， i.e. 16 α-hydroxydehydrotrametenolic acid （peak 6），16α-hydroxytrametendic acid （peak 7），poricoic acid B （peak 9），dehydrotumulosic acid（peak 10），poricoic acid A （peak 12），polyporenic acid C （peak 15），3-O-acetyl-16α-hydroxydehydrotrametenolic acid （peak 17），dehydropachymic acid （peak 20），pachymic acid （peak 21），dehydrotrametenolic acid （peak 22），dehydroeburicoic acid （peak 24）. Grey correlation analysis showed ，the correlation between 24 peaks and sleep duration was greater than 0.6（0.611 5- 0.811 8）；the correlation between 24 peaks and sleep latency was greater than 0.6（0.605 9-0.790 4），except for peaks 14，24 and 2；the correlation of 24 peaks between sleeping rate was greater than 0.6（0.606 4-0.721 6），except for peaks 23，19，17 and 5； the correlation of 24 peaks between total efficacy was greater than 0.6（0.619 0-0.781 2），except for peaks 2，5，19. The top 10 chromatographic peaks related to the total efficacy were peak 15（polyporenic acid C ），peak 16，peak 8，peak 11，peak 12 （poricoic acid A ）， peak 1， peak 7 （16 α-hydroxytrametendicacid）， peak 3， peak 9 （poricoic acid B ） and peak 20 （dehydropachymic acid ）. CONCLUSIONS ：UPLC fingerprint of P. cocos aqueous extract was established and 11 components were identified. Ten components such as polyporus acid C are closely related to the total efficacy of sedation and hypnosis ，which preliminarily reveal the material basis of the sedative and hypnotic effect of P. cocos .

OBJECTIVE：Compare the difference of total protein content of Poria cocos from different producing areas. METHODs：Using bovine serum albumin （BSA） as control ，0.4 mol/L sodium hydroxide solution as exctraction solution ， Coomassie brilliant blue G- 250 as chromogenic reagent ，visible spectrophotometry at 595 nm was used to determine the contents of total protein of P. cocos ；cluster analysis was used to classify 34 batches（S1-S34）of P. cocos from different producing areas. RESULTS：The linear range of BSA was 1.45-17.40 μ g/mL （r＝0.999 6）. RSDs of precision ，stability （20 min） and reproducibility tests were all lower than 3％；recoveries were 100.14％-104.26％（RSD＝1.43％，n＝9）. The contents of total protein in 34 batches of P. cocos from different producing areas were 0.388 4％-1.129 7％. The results of cluster analysis showed that among 34 batches of P. cocos ，the total protein content of P. cocos produced in Yingshan county of Hubei province （S2，S3） was higher than 1％，clustered into one category ；the total protein contents of P. cocos produced in Hubei ，Yunnan，Anhui and Hunan（S1，S5-S10，S12，S13，S16，S17，S19-S21，S23-S25，S28，S30，S31）were 0.653 5％-0.946 1％，clustered into one categony，and the remaining batch content were 0.388 4％-0.601 2％，clustered into one category. CONCLUSIONS ：Established method is suitable for the content determination of total protein content of P. cocos . The protein content of P. cocos from Yingshan county of Hubei province is the highest ，followed by Yunnan and Anhui in 34 batches of P. cocos from different producing areas.