Objective To observe protective effects of parthenolide ( PTN) in rats with doxorubicin-induced nephropathy and its mechanims. Methods 48 male rats were randomly divided into six groups: blank group, model group, vehicle group, and parthenolide-treated group (1.5, 3, 6 mg/kg).The models of doxorubicin-induced nephropathy were established by tail vein injection of 5 mg/kg doxorubicin for one time.After consecutive treatment of PTN for seven days, the BUN and Cr in serum, and nitricoxide (NO), malondialdehyde (MDA), nitricoxidesynthase (NOS), glutathione peroxidase (GSH), superoxide dismutase (SOD) in renal tissues were detected.The pathological changes of renal tissue was observed by HE method. ResuIts There was significant pathological changes of renal tissue in model group, that showed basophilic change, interstitial inflammatory hyperplasia and inflammatory infiltratio, after PTN 6 mg/kg treatment, the above changes significant improved.The serum BUN and Cr levels in PTN 1.5 mg/kg, PTN 3 mg/kg and PTN 6 mg/kg group were lower than those in model group (P<0.05);there were no significant differences of above indexes between PTN 3 mg/kg, PTN 6 mg/kg group and blank gorup.Compared with model group, the SOD and GSH activity were higher and MDA level was lower in three different dosage of PTN groups (P<0.05); there were no significant differences of SOD activity between PTN 3 mg/kg, PTN 6 mg/kg group and blank gorup; there were no significant differences of GSH activity and MDA level between PTN 6 mg/kg group and blank gorup.The NO level and NOS activity in three different dosage of PTN groups were higher (P<0.05);there were no significant differences of NO level and NOS activity between PTN 6 mg/kg group and blank gorup.ConcIusion Parthenolide has protective effects on doxorubicin-induced nephropathy, and its mechanism might be antioxidative effects.

Objective:To investigate the value of ultrasound in evaluating pathologically complete response(pCR) of neoadjuvant chemotherapy(NAC) for breast cancer.Methods:A retrospective analysis was performed in 67 breast cancer patients who received NAC in the Second Affiliated Hospital of Harbin Medical University from January 2018 to December 2019. Ultrasound examination was performed before and after NAC, and two-dimensional, color and elastic images were stored for subsequent analysis. According to the operation pathological results after NAC, the patients were divided into two groups, pCR group and npCR group, using the Miller-Payne criteria as the evaluation criteria. Chi-square test was used to compare the ultrasound characteristics of breast masses in pCR group and npCR group before NAC. The accuracy, sensitivity, specificity, positive predicative value(PPV) and negative predicative value(NPV) of pCR were analyzed using ROC curve. The difference of pCR estimated by ultrasound in different molecular types was also analyzed.Results:①Of the 67 patients, 16 achieved pCR and 51 achieved npCR. Among the 16 pCR patients, 11(68.8%) were evaluated correctly and 5(31.2%) were wrong.Among the 51 npCR patients, 49(96.1%) were evaluated correctly and 2(3.9%) were wrong. ②There was no statistically significant difference between pCR and npCR in ultrasound features of pre-NAC breast masses( P>0.05). ③After the whole process of NAC, the accuracy, sensitivity, specificity, PPV and NPV were 89.6%, 68.8%, 96.1%, 84.6%, and 90.7%, respectively; The area under ROC curve was 0.824. ④The diagnostic efficiency of pCR estimated by ultrasound was higher for Luminal B and HER-2 breast cancer. Conclusions:The accuracy of pCR after NAC evaluated by ultrasound is 89.6%, with different diagnostic efficiency in different molecular types.

Objective To investigate the role of TLR4/NF-κB signaling pathway under the action of TAK-242 in the cardiomyocyte apoptosis after coronary micro-embolism (CME) in rats.Methods Fortyfive rats were randomized (random number) into three groups:sham operation,CME and CME plus TAK242 groups (n =15 per group).CME was induced by injecting polyethylene microspheres (42 μm) into the left ventricle except the sham group.CME plus TAK-242 group was treated with TAK-242 (2 mg/kg) via the tail vein of mice 30 min before CME modeling.Cardiac function was evaluated 6 h after operation.Tissue biopsy was stained with HBFP to measure the size of infarction area.TUNEL assay was used to detect cardiomyocyte apoptosis.Western blot and qPCR were used to evaluate the protein levels and mRNA expressions of TLR4,NF-κB p65 and cleaved caspase-3,respectively.Statistical analysis was performed using one-way analysis of variance followed by LSD-t test.Results Compared with the sham group,left ventricular ejection fraction (LVEF) in the CME group was significantly decreased [(68.91 ± 4.12) ％ vs.(84.80 ± 2.51) ％,P ＜ 0.05],and the infarction area (P ＜ 0.05),the apoptosis index [(3.36 ± 0.63) ％ vs.(0.19 ± 0.08) ％,P ＜0.05],the mRNA expressions of TLR4,NF-κB p65 and cleaved caspase-3 in CME group were increased significantly (all P ＜ 0.05).Compared with CME group,LVEF in the CME plus TAK-242 group was significantly improved [(75.58 ± 5.01) ％ vs.(68.91 ± 4.12) ％,P＜0.05],and the infarction area [(8.58 ± 2.12) ％ vs.(14.65 ± 4.23) ％,P＜0.05],the apoptosis index [(1.43 ± 0.51) ％ vs.(3.36 ± 0.63) ％,P ＜ 0.05],the mRNA expressions of TLR4,NF-κB p65 and cleaved caspase-3 in CME + TAK-242 group were decreased significantly (all P ＜ 0.05).Conclusions TAK-242 effectively improved CME-induced cardiac dysfunction by regulating TLR4/NF-κB signaling pathway and then reducing the cardiomyocyte apoptosis.

Aim To clarify the effect of Borneol on the chloride channels and cell volume in poorly differentia-ted nasopharyngeal carcinoma CNE-2Z cells.Methods The technique of whole-cell patch clamp was used to detect the chloride currents and analyze the character-istics of the currents in CNE-2Z cells.The volume changes caused by Borneol were measured by the meth-od of time-lapse live cell imaging.Results The chlo-ride currents were induced by extracellular application of Borneol (20 μmol·L -1 )isotonic condition.The currents showed a characteristic of outward rectification and did not show voltage-dependent or time-dependent inactivation.The reversal potential of the currents was close to the CI-equilibrium potential. The currents were inhibited by the chloride channel blocker tamox-ifen.The currents were also inhibited by 47% hyper-tonic solution.Borneol decreased the cell volume by 9.4% in 30 min.Tamoxifen completely inhibited the Borneol-induced cell volume decrease.Conclusion Borneol can activate volume-sensitive chloride channels and induce volume decrease in CNE-2Z cells.Chloride channels play a pivotal role in the process of volume decrease caused by Borneol.

Objective To investigate the chemical constituents of marine sponge Mycale sp.collected from the South China Sea.Methods The ethyl acetate extract of the marine sponge Mycale sp.was separated and purified by repeated column chromatography on silica gel, Sephadex LH-20 and reversed-phase high-performance liquid chromatography (RP-HPLC).The structures of these compounds were identified by means of various modern spectroscopic techniques and comparison with their physicochemical properties to reported data.The tumor cell growth inhibitory activities of these compounds against human breast cancer cell lines MCF-7 and human lung cancer cell lines PC9 were tested by Cell Counting Kit-8 (CCK-8) method.Results Ten compounds were isolated and identified as cyclo-(Pro-Ile)(1),cyclo-(Pro-Leu)(2),cyclo-(Ile-Leu)(3),cyclo-(Phe-Pro)(4),cyclo-(Phe-Val)(5),cyclo-(Phe-Leu)(6),cyclo-(Phe-Ile)(7), 2′-deoxythymidine (8), thymine (9), 5-hydroxy-3,4-dimethyl-5-pentyl-2(5H)-furanone (10).These compounds showed weak tumor cell growth inhibitory activities toward cells MCF-7 and PC9 in vitro.Conclusion Compounds 1, 2, 4, 5, 6, 7 and 10 were isolated from the sponge Mycale sp.for the first time.It is the first time to report the antitumor activity evaluation for compounds 1~10.

Objective To explore the rules of acupoint selection and manipulation application of Tuina in the treatment of diabetes peripheral neuropathy(DPN)with data mining technology.Methods The clinical research literature of Tuina for DPN from October 2022 was selected by searching four Chinese databases that CNKI,WanFang,VIP and Chinese Biomedical Literature Database.Using the traditional Chinese medicine inheritance assistance platform software,analyze and summarize the rules of selecting acupoints and applying manipulations in the treatment of DPN with Tuina.Results A total of 110 articles were included,including 65 acupoints and 33 manipulations.The acupoints with the highest frequency are Zusanli(ST 36),Sanyinjiao(SP 6),Taixi(KI 3),Yongquan(KI 1),Taichong(LR 3),Yanglingquan(GB 34),etc.The meridians mainly include Taiyin Spleen Meridian of Foot,Yangming Stomach Meridian of Foot,Taiyang Bladder Meridian of Foot and Shaoyin Kidney Meridian of Foot.Five-shu Points,Lower He-sea Points and Yuan-primary Points are commonly used specific points.The acupoints are mostly distributed in the lower limbs.The categories of Tuina manipulations mainly include squeezing-pressing manipulations,pushing rolling manipulations and composite manipulations.The Tuina manipulations mainly include kneading manipulation,pressing manipulation,point-pressing manipulation,pressing-kneading manipulation and twisting manipulation with both palms.Conclusion The acupoint selection and manipulation application of Tuina in treating DPN have certain rules,and the main treatment principles are to regulate the organs and dredge collaterals,and to replenish qi and promote blood circulation,which can provide objective basis for clinical treatment.

Objective: To analyze the computed tomography(CT) features and clinical outcomes of renal epithelioid angiomyolipoma(EAML). Methods: From January 2004 to June 2015, 17 patients with EAML in the Second People′s Hospital of Lianyungang and Nanjing Drum Tower Hospital were included in the study.All patients underwent CT examination.The patients' general data, imaging characteristics and pathologic features were determined by chart review. Results: Nine patients underwent radical nephrectomy, and 8 patients underwent partial nephrectomy.The mean maximal tumor diameter was 6.1 cm (ranged 1.2-12.5 cm). The fat component of one lesion was detected by CT.On unenhanced CT, the intratumoral attenuations were hyperattenuating in 9 patients, isoattenuating in 1 patient and hypoattenuating in 7 patients.The contrast enhancement degree was mild in 1 patient, moderate in 6 patients and marked in 10 patients.The contrast enhancement pattern was homogeneous in 8 lesions and heterogeneous in 9 lesions.All patients were positive for melanoma(12 cases were positive for HMB-45, 3 cases were positive for melan A, and 2 cases were positive for both). The mean follow-up period was 28.5 months (ranged 2-126 months), and 15 patients were alive with no evidence of disease at the time of the last follow-up, 1 patient exhibited local recurrence and lung metastases, and another 1 patient developed distant metastasis. Conclusion Renal EAML has a range of imaging appearances.Our data suggested that the majority of the tumors (size 10 cm) were solid and had a tendency to be hyperattenuating on unenhanced CT images.Hemorrhaging or necrosis was observed in tumors with sizes≥10cm with heterogeneous enhancement.In contrast to classic AML, which is benign, EAML is potentially malignant and exhibits aggressive clinical features, including local recurrence and distant metastasis.

Metabolic dysfunction-associated steatotic liver disease （MASLD） is the most prevalent chronic liver disease globally, encompassing the entire spectrum of fatty liver pathogenesis. It progresses from simple steatosis to metabolic-associated steatohepatitis （MASH）, involving injury and inflammation，with or without fibrosis，ultimately leading to cirrhosis and hepatocellular carcinoma, which affects approximately a quarter of the world's population. Liver biopsy remains the gold standard for differentiating MASH from steatosis and assessing advanced fibrosis. However, its limitations, including costliness, invasiveness, and sampling bias, have spurred the development of noninvasive diagnostic techniques. In addition, there are no FDA-approved drugs for the treatment of MASLD. Enumerating noninvasive diagnostic markers that have the potential to replace liver biopsy were summarized, and the current treatment options for MASLD were discussed, with clinical trials designed to evaluate the efficacy and safety of single agents or combination therapies to halt or reverse disease progression, which could provide new insights for the clinical diagnosis and treatment of MASLD.

OBJECTIVE： To establish a method for simultaneous determination of gallic acid， cinnamic acid and catechin in 3 processed products of Rheum officinale. METHODS： RP-HPLC method was established. The determination was performed on Thermo ScientificTM Hypersil GOLD Dim column with mobile phase consisted of methanol-0.1％ phosphoric acid solution （gradient elution） at the flow rate of 1.0 mL/min. The detection wavelength was set at 278 nm， and the column temperature was 30 ℃. The sample size was 10 μL. RESULTS： The linear range of gallic acid， cinnamic acid and catechin were 0.126 2-1.262 0 μg（r＝0.999 9）， 0.036 2-0.362 0  μg（r＝0.999 9） and 0.177 9-1.779 4 μg（r＝0.999 8）， respectively. Quantitative limits were 25.4， 28.2， 62.5 ng， and detection limits were 6.2， 3.6， 11.8 ng， respectively. RSDs of precision， stability， repeatability and durability tests were all less than 3％. The recoveries ranged from 94.64％-102.71％（RSD＝2.74％， n＝9）， 95.35％-102.49％（RSD＝2.44％， n＝9）， 93.56％-103.66％（RSD＝3.27％， n＝9）. The determination results showed that the contents of gallic acid and cinnamic acid in prepared R. officinale were higher， and the order of both were prepared R. officinale＞steamed R. officinale＞raw R. officinale. The content of catechin in raw R. officinale was higher， and the order of it was raw R. officinale＞ steamed R. officinale＞prepared R. officinale. CONCLUSIONS： The method is sensitive， reliable and reproducible. It can be used to determine the contents of gallic acid， cinnamic acid and catechins in 3 processed products of R. officinale simultaneously.