Objective:To investigate the role of receptor-interacting protein kinse3 (RIPK3)-mediated necroptosis in diabetic mellitus-caused abolition of cardioprotection induced by sevoflurane postconditioning in rats.Methods:Eighty rats with diabetes mellitus, aged 4-5 weeks, weighing 90-100 g, were divided into 4 groups ( n=20 each) using a random number table method: sham operation group (group Sham), myocardial ischemia-reperfusion (I/R) group (group I/R), sevoflurane postconditioning group (group SP) and sevoflurane postconditiong plus RIPK3 inhibitor GSK-872 group (group GSK). Myocardial I/R was induced by 40 min occlusion of the left anterior descending branch of the coronary artery followed by 120 min reperfusion.In group SP, 2.4% sevoflurane was inhaled for 15 min at the beginning of reperfusion.In group GSK, GSK-872 3.3 mg/kg (dissolved in normal saline) was intraperitoneally injected at 24 and 2 h before surgery, and the other treatments were similar to those previously described in group SP.After 120 min of reperfusion, blood samples from the abdominal aorta were collected for determination of concentrations of serum lactate dehydrogenase (LDH) and creatine kinase-MB (CK-MB). Myocardial tissues were taken for determination of percentage of myocardial infarct size (by TTC staining) and expression of RIPK3, phospho-Ca 2+ -calmodulin-dependent protein kinase Ⅱ (p-CaMKⅡ) and phospho-mixed lineage kinase domain-like protein (p-MLKL) (by Western blot), and the ultrastructure of myocardium was observed by transmission electron microscopy. Results:Compared with group Sham, the serum LDH and CK-MB concentrations and percentage of myocardial infarct size were significantly increased, the expression of RIPK3, p-MLKL and p-CaMKⅡ in myocardial tissues was up-regulated ( P<0.05), and the damage to cardiomyocytes was severe in group I/R.Compared with group I/R, no significant change was found in the parameters mentioned above in group SP ( P>0.05). Compared with group SP, the serum LDH and CK-MB concentrations and percentage of myocardial infarct size were significantly decreased, the expression of RIPK3, p-MLKL and p-CaMKⅡ in myocardial tissues was down-regulated ( P<0.05), and the damage to cardiomyocytes was reduced in group GSK. Conclusion:The mechanism of diabetic mellitus-caused abolition of cardioprotection induced by sevoflurane postconditioning is related to excessive activation of RIPK3-mediated necroptosis in rats.

Objective:To develop the Peripherally Inserted Central Catheter (PICC) Nursing Knowledge, Attitude and Practice Scale for Primary Caregivers of Patients with PICC, and to test its reliability and validity.Methods:Taking the theory of knowledge, attitude and practice as the basic framework, the item pool was initially constructed through literature review, group discussion, and semi-structured interviews from March to April 2021. From May to July 2021, the initial scale was formed through Delphi expert consultation, and the items of the scale were pre-tested and adjusted through cognitive interviews. From June to October 2021, convenience sampling was used to select the primary caregivers of 450 patients with PICC in a cancer hospital in Hunan Province for a formal survey to test the reliability and validity of the scale.Results:The formal scale consisted of 53 items in 3 dimensions, including 19 items in the knowledge dimension, 8 items in the attitude dimension, and 26 items in the practice dimension. The Cronbach's α coefficients of each dimension and the total scale were 0.949, 0.962, 0.972, and 0.981, respectively, and the test-retest reliability coefficients of each dimension and the total scale were 0.951, 0.935, 0.972, and 0.967, respectively. The split-half reliability coefficients of each dimension and the total scale were 0.889, 0.954, 0.889, and 0.882, respectively. The content validity index of the item ranged from 0.82 to 1.00.Conclusions:The reliability and validity of the PICC Nursing Knowledge, Attitude and Practice Scale for Primary Caregivers of Patients with PICC is good, and it can be used as a tool to evaluate the PICC nursing knowledge, attitude, and practice of primary caregivers of patients with PICC.

Objective:To investigate the role and regulatory mechanism of triggering receptor expressed on myeloid cell 2 (TREM2) in mice lung ischemia/reperfusion injury (LIRI).Methods:Thirty-six healthy male C57BL/6 mice were divided into six groups according to the random number method ( n = 6): normal control group, and LIRI 2, 6, 12, 24, 48 hours group. Mice LIRI models were established by clamping the left hilum. The wet/dry weight ratio (W/D) of left lung tissue was measured. Lung injury was observed and evaluated by hematoxylin-eosin (HE) staining and electron microscopy. The levels of interleukins (IL-1β, IL-18) in lung tissue were detected by enzyme linked immunosorbent assay (ELISA). The mRNA expressions of TREM2 and caspase-1 were determined by polymerase chain reaction (PCR). The protein expressions of TREM2, caspase-1, Gasdermin-D (GSDMD) were determined by Western blotting. Results:At 2 hours after LIRI, lung injury began to appear, the lung ultrastructure changed, and the lung injury score increased; at 6 hours, the degree of lung injury was the most serious; after 12 hours, the lung injury gradually reduced and the lung injury score gradually decreased. Compared with the normal control group, lung W/D ratio and lung injury score of LIRI 2, 6, 12, 24, 48 hours groups were significantly higher, the differences were statistically significant (lung W/D ratio: 7.06±0.52, 8.34±0.17, 6.42±0.35, 5.34±0.25, 5.59±0.45 vs. 4.69±0.23; lung injury score: 5.50±0.54, 9.75±0.89, 5.88±0.84, 3.63±0.74, 4.13±0.64 vs. 1.13±0.35, all P < 0.05). Compared with the normal control group, the levels of IL-1β and IL-18 in lung tissue were significantly increased at 2 hours after LIRI, reached a peak at 6 hours [IL-1β (ng/L): 502.76±12.25 vs. 56.50±8.07, IL-18 (ng/L): 414.02±10.75 vs. 81.63±5.29, both P < 0.05], then decreased gradually, and were still significantly higher than the normal control group at 48 hours. The PCR and Western blotting showed that the expression of TREM2 was significantly lower than that in the normal control group at 2 hours after LIRI, and reached a valley at 6 hours [TREM2 mRNA (2 -ΔΔCt): 0.47±0.05 vs. 1.02±0.05, TREM2/GAPDH: 0.23±0.13 vs. 0.48±0.17, both P < 0.05], then gradually increased, and reached the peak at 24 hours [TREM2 mRNA (2 -ΔΔCt): 3.98±0.15 vs. 1.02±0.05, TREM2/GAPDH: 0.71±0.17 vs. 0.48±0.17, both P < 0.05]. The trend of expression of caspase-1 and GSDMD were opposite to that of TREM2, which increased at first and then decreased, and reached a peak at 6 hours after reperfusion [caspase-1 mRNA (2 -ΔΔCt): 2.20±0.13 vs. 1.01±0.02, caspase-1/GAPDH: 0.64±0.02 vs. 0.20±0.06, GSDMD/GAPDH: 1.23±0.01 vs. 0.87±0.02, all P < 0.05]. Conclusions:TREM2 might be involved in LIRI in mice. The mechanism may be related to the effect of TREM2 on caspase-1-mediated pyroptosis.

Objective:To explore the construction and application of the standard process of thirst management for patients undergoing endonasal transsphenoidal surgery for pituitary adenomas.Methods:From June 2020 to October 2021, 160 patients with endonasal transsphenoidal surgery for pituitary adenomas who were admitted to the Neurosurgery Department of the First Affiliated Hospital of University of Science and Technology of China (Anhui Provincial Hospital) were selected by convenience sampling. The patients were randomly divided into test group and control group, 80 cases in each group. The control group implemented routine nursing to prevent postoperative thirst, while the test group established a standard process of thirst management and implemented thirst prevention and interventions according to the process. The thirst intensity, thirst pain and resting salivary flow rate between the two groups was compared.Results:The thirst intensity scores of patients in the test group at 2, 6 and 24 hours after operation were lower than those in the control group, with statistically significant differences ( Z=-8.696, -10.008, -4.305; P<0.01) . The score of thirst pain in the test group was lower than that in the control group, and the resting salivary flow rate at 6 and 24 hours after operation were higher than those in the control group, with statistically significant differences ( Z=-9.488, -4.124, -2.631; P<0.01) . Conclusions:The standard process of thirst management can reduce the postoperative thirst intensity of patients with pituitary adenomas surgery and improve their thirst feeling, which is worthy of clinical promotion.

Objective To evaluate the diagnostic efficacy of Kwak and ACR( 2017 ) thyroid imaging reporting and data systems ( T I‐RADS ) for thyroid nodules . Methods Cases of thyroid nodule who underwent surgery from January 2015 to M arch 2018 in 15 hospitals in Sichuan province were collected and the ultrasonographic features of thyroid nodules were retrospectively analyzed by trained senior ultrasound physicians using Kwak and ACR T I‐RADS classification methods . Totally ,12 712 thyroid nodules were observed ,7 023 thyroid nodules in 7 023 cases with complete ultrasound and surgical and pathological data were eventually enrolled in the study . T hyroid nodules with solid ,hypoechoic or very hypoechoic ,tall/wide ratio ≥ 1 , margin ill‐defined and microcalcification were classified as malignant signs of ultrasound . M alignant percentage was calculated and diagnostic tests were performed . Results ① T here was a statistical difference between the benign and malignant nodules in the two types of T I‐RADS classification ( P＜0 .01) . ② T he area under ROC curve of Kwak and ACR in the diagnosis of malignant nodules were 0 .89 and 0 .84 ,respectively . T he Youden index of Kwak and ACR were 0 .66 and 0 .57 ,respectively . ③Taking Kwak T I4B and ACR T R4 as critical points for malignancy ,the sensitivity ,specificity ,positive predictive value and negative predictive value of Kwak T I 4B were 75 .0% ,90 .9% ,83 .2% ,and 85 .9% , respectively . T he accuracy of Kwak T I4B was 84 .9% ; T he sensitivity ,specificity ,positive predictive value and negative predictive value of ACR T R4 were 88 .2% ,68 .9% ,62 .9% ,and 90 .8% ,respectively . T he accuracy of ACR T R4 was 76 .2% . T he Kappa value of Kwak TI4B and ACR T R4 was 0 .52 . T he χ2 value of Kwak T I4B and ACR T R4 was 2 174 .6 ( P ＜ 0 .01 ) . Conclusions T he diagnostic values of two T I‐RADS classification methods for thyroid malignant nodules are high . T he overall efficiency of Kwak T I‐RADS classification method is better than that of ACR TI‐RADS classification method .

Objective:To assess the feasibility of using the posterosuperior tetralogy (PS-Tetra) score for predicting the prognosis of repair of posterosuperior massive rotator cuff tears.Methods:Data were retrospectively reviewed for patients who underwent repair of posterosuperior massive rotator cuff tears from February 2016 to June 2020. A total of 95 (male 48, female 47) shoulders with an average age of 58.52±8.33 years (range, 27-76 years) were included. The American Shoulder and Elbow Surgeons (ASES) scores and shoulder range of motions (ROM) were used to evaluate shoulder function. MRI was used to assess preoperative fatty infiltration (FI), atrophy, modified Patte's classification, PS-Tetra score and postoperative tendon integrity. The shoulder function was compared between groups of different PS-Tetra scores. The binary logistic regression was used to determine the risk factors of irreparability and retear.Results:83 cases of repair of posterosuperior massive rotator cuff tears were finally included. Complete repairs were performed in 83 cases, and partial repairs were performed in 12 cases. Retear was observed in 17 (20%) cases. The ASES scores (postoperative 58.52±8.33 vs. preoperative 47.30±17.40, t=-19.642, P<0.001), ROM of forward flexion (postoperative 157.60°±13.85° vs. preoperative 116.88°±50.89°, t=-7.272, P<0.001), external rotation (postoperative 45.26°±14.69° vs. preoperative 37.34°±18.65°, t=-4.043, P<0.001) and internal rotation [postoperative L 1 (T 7-buttock) vs. preoperative L 2 (T 7-buttock), Z=-2.737, P=0.006] were significantly improved postoperatively in the group with PS-Tetra score between 0 and 2. In the group with PS-Tetra score of 3 and 4, the ASES scores (postoperative 69.17±15.91 vs. preoperative 46.85±20.73, t=-11.167, P=0.001) were significantly improved postoperatively, while the ROMs were not. Modified Patte stageⅢ[ OR=26.827, 95% CI (2.089, 344.500), P=0.012] was the risk factor of irreparability. Dominant side involvement [ OR=9.407, 95% CI (1.044, 84.784), P=0.046) and PS-Tetra score of 3 and 4 [ OR=5.037, 95% CI (1.028, 26.623), P=0.046] were risk factors of retear. Conclusions:For repair of posterosuperior massive rotator cuff tears, preoperative PS-Tetra score of 3 and 4 was the risk factors of poor postoperative shoulder functions and retear.

OBJECTIVE: To evaluate the effectiveness of tendon insertion medialized repair in treatment of large-to-massive rotator cuff tears (L/MRCT). METHODS: The clinical and imaging data of 46 L/MRCT patients who underwent arthroscopic insertion medialized repair between October 2015 and June 2019 were retrospectively analyzed. There were 26 males and 20 females with an average age of 57.7 years (range, 40-75 years). There were 20 cases of large rotator cuff tears and 26 cases of massive rotator cuff tears. Preoperative imaging evaluation included fatty infiltration (Goutallier grade), tendon retraction (modified Patte grade), supraspinatus tangent sign, acromiohumeral distance (AHD), and postoperative medializaiton length and tendon integrity. The clinical outcome was evaluated by visual analogue scale (VAS) score, American Society for Shoulder and Elbow Surgery (ASES) score, shoulder range of motion (including anteflexion and elevation, lateral external, and internal rotation) and anteflexion and elevation muscle strength before and after operation. The patients were divided into two groups (the intact tendon group and the re-teared group) according to the integrity of the tendon after operation. According to the medializaiton length, the patients were divided into group A (medialization length ≤10 mm) and group B (medialization length >10 mm). The clinical function and imaging indexes of the patients were compared. RESULTS: All patients were followed up 24-56 months, with an average of 31.8 months. At 1 year after operation, MRI showed that the medializaiton length of supraspinatus tendon was 5-15 mm, with an average of 10.26 mm, 33 cases in group A and 13 cases in group B. Eleven cases (23.91%) had re-teared, including 5 cases (45.45%) of Sugaya type Ⅳ and 6 cases (54.55%) of Sugaya type Ⅴ. At last follow-up, the VAS score, ASES score, shoulder anteflexion and elevation range of motion, lateral external rotation range of motion, and anteflexion and elevation muscle strength significantly improved when compared with those before operation ( P<0.05); there was no significant difference in internal rotation range of motion between pre- and post-operation ( P>0.05). The Goutallier grade and modified Patte grade of supraspinatus muscle in the re-teared group were significantly higher than those in the intact tendon group, and the AHD was significantly lower than that in the intact tendon group ( P<0.05). There was no significant difference in other baseline data between the two groups ( P>0.05). Except that the ASES score of the intact tendon group was significantly higher than that of the re-teared group ( P<0.05), there was no significant difference in the other postoperative clinical functional indicators between the two groups ( P>0.05). There was no significant difference in the incidence of re-tear, VAS score, ASES score, range of motion of shoulder joint, and anteflexion and elevation muscle strength between group A and group B ( P>0.05). CONCLUSION Tendon insertion medialized repair may be useful in cases with L/MRCT, and shows good postoperative shoulder function. Neither tendon integrity nor medialization length shows apparent correlations with postoperative shoulder function.
Male ; Female ; Humans ; Middle Aged ; Rotator Cuff Injuries/surgery* ; Retrospective Studies ; Treatment Outcome ; Rotator Cuff/surgery* ; Tendons ; Rupture/surgery* ; Shoulder Joint/surgery* ; Arthroscopy/methods* ; Range of Motion, Articular

Alkali-salinity exerts severe osmotic, ionic, and high-pH stresses to plants. To under-stand the alkali-salinity responsive mechanisms underlying photosynthetic modulation and reactive oxygen species (ROS) homeostasis, physiological and diverse quantitative proteomics analyses of alkaligrass (Puccinellia tenuiflora) under Na2CO3 stress were conducted. In addition, Western blot,real-time PCR, and transgenic techniques were applied to validate the proteomic results and test the functions of the Na2CO3-responsive proteins. A total of 104 and 102 Na2CO3-responsive proteins were identified in leaves and chloroplasts, respectively. In addition, 84 Na2CO3-responsive phospho-proteins were identified, including 56 new phosphorylation sites in 56 phosphoproteins from chloro-plasts, which are crucial for the regulation of photosynthesis, ion transport, signal transduction, and energy homeostasis. A full-length PtFBA encoding an alkaligrass chloroplastic fructose-bisphosphate aldolase (FBA) was overexpressed in wild-type cells of cyanobacterium Synechocystis sp. Strain PCC 6803, leading to enhanced Na2CO3 tolerance. All these results indicate that thermal dissipation, state transition, cyclic electron transport, photorespiration, repair of pho-tosystem (PS) Ⅱ, PSI activity, and ROS homeostasis were altered in response to Na2CO3 stress, which help to improve our understanding of the Na2CO3-responsive mechanisms in halophytes.

[Abstract] Objective: To investigate the expression and clinical significance of CEAmRNAin peritoneal lavage fluid for patients with gastric cancer after radical surgery. Methods: The clinical data of 139 gastric cancer patients, who underwent peritoneal lavage CEA mRNA detection after radical resection in the Comprehensive Cancer Centre of Drum Tower Hospital from January 2013 to December 2017 were retrospectively analyzed. Routine post-operative follow-up was conducted in all patients. The expression of CEA mRNA in peritoneal lavage fluid after radical resection of 139 gastric cancer patients was detected by RT-PCR. Chi-square test analysis was used to study the relationship between the expression of CEA mRNA in peritoneal lavage fluid and basic clinical features, histopathological data, hematological indicators and the recurrence pattern of GC patients. Logistic univariate and multivariate regression analyses were used to screen the influential factors affecting CEA mRNA expression. Results: CEA mRNA was positive in 44 (31.7%) of 139 patients. Analysis showed that there was no significant correlation between CEA mRNA expression and sex, age, pathological grade, Lauren type, HER2, EGFR, VEGFR and Ki67 (all P>0.05), but there was significant correlation between CEA mRNA expression and pathological type, vascular invasion, local invasion depth, lymph node metastasis and clinical AJCC stage (all P<0.05). The peritoneal recurrence rate of patients with positive CEA mRNA expression was significantly higher than that of patients with negative expression (P=0.012). Logistic univariate regression analysis showed that signet ring cell carcinoma (P=0.04, HR=2.810， 95% CI: 1.050-7.520), T stage (P=0.016，HR=6.329, 95% CI: 1.417-28.264), N stage (P=0.022，HR=3.068，95% CI: 1.172-8.027), AJCC stage (P=0.016，HR= 3.971, 95% CI: 1.295-12.173), nerve invasion (P=0.002, HR=6.738, 95% CI: 1.995-22.757) and vascular invasion (P<0.001, HR= 16.36, 95% CI: 3.85-69.512) were risk factors for positive CEA mRNA expression in peritoneal lavage fluid of patients with gastric cancer. Logistic multivariate regression analysis showed that vascular invasion (P<0.001, HR=21.314，95% CI: 4.21-107.907) was an independent risk factor for positive CEAexpression in peritoneal lavage fluid of gastric cancer patients. Conclusion: Gastric cancer patients with positive CEA mRNA in peritoneal lavage fluid have higher risk of peritoneal recurrence or metastasis and poorer prognosis. So, more aggressive anti-tumor treatments including local abdominal cavity treatment should be considered.

[摘 要] 目的：评估放疗作为原位疫苗的联合治疗模式在晚期软组织肉瘤（STS）患者中的有效性和安全性。方法：回顾性分析2020年12月至2024年9月期间在南京大学医学院附属鼓楼医院肿瘤中心接受联合治疗模式的12例晚期STS患者的临床资料。12例患者均接受了联合治疗。放疗主要以大分割为主。靶向治疗：安罗替尼10例、阿帕替尼2例。免疫治疗以PD-1抗体为主。主要研究终点为疾病控制率（DCR），次要研究终点为客观有效率（ORR）及安全性。结果：接受联合治疗的12例STS患者中有0例CR，4例PR，7例SD，1例PD。ORR为33%，DCR为91.7%，其中靶病灶的DCR为100%。12例患者中，9例出现Ⅰ~Ⅱ级不良反应。最常发生的血液学不良反应是贫血（6例）、肝功能检查结果异常（3例）。最常发生的非血液学不良反应是尿蛋白（5例）、高血压（4例）、甲状腺功能异常（3例）、厌食（3例）、恶心呕吐（2例）；仅2例发生Ⅲ级血液毒性，有1例发生Ⅲ级气胸。结论：放疗作为原位疫苗的联合治疗模式在晚期STS患者中展现出较高的DCR，且未出现严重不良反应。该联合治疗模式具有良好的有效性与安全性。