Objective To explore the clinical pathological features of gastric cancer and to provide a basis for research and treatment of gastric cancer.Methods From 2001 to 2004,a total of 694 cases of gastric cancer with radical gastrectomy were collected.Gender,age,tumor location,tumor size,World Health Organization (WHO) histological type and grade,Lauren type,blood/lymphatic vessel invasion,lymph node metastasis,depth of tumor invasion (pT) and pathological TNM staging (pTNM) were retrospectively analyzed.Results Among 694 gastric cancer cases,male to female ratio was 3.96∶ 1; a total of 644 cases (92.8％) were aged from 41 to 70,and cases aged from 51 to 70 had a high incidence of gastric cancer.The predilection site for gastric cancer was cardia (33.43％),antrum (28.96％) and the body (21.76％) accordingly.The common WHO histological types were tubular adenocarcinoma (70.32 ％) and signet ring cell carcinoma (24.50 ％).The common histological grades were Ⅱ,Ⅲ and Ⅰ.The intestinal type was most common in Lauren classification,accounting for 58.93 ％; followed by the diffuse type,accounting for 22.33 ％.Blood/lymphatic vessel invasion was detected in 438 cases (63.11％),lymphnode metastasis in 504 cases (72.62％).A total of 319 cases (45.97％) were pT3 stage,241 cases (34.73％) were on pTNM Ⅲ stage.Conclusions In recent years,cardia and antrum are the predilection sites of gastric cancer.Tubular adenocarcinoma and signet ring cell carcinoma are common which indicate that the mechanism of gastric cancer pathogenesis is varied.

Objectives To report clinical,electrophysiological and pathological features of myopathy with tubular aggregates.Methods The onset of the disease was between 5-50 years old in the 6 sporadic male cases.Skeletal muscle biopsy was performed for all cases.Specimens were examined histochemically,enzymhistochemically and electromicroscopically.Results Case 1 and 2 presented with limb girdle myasthenic syndrome.The case 1 developed exercise-induced cramps in the late stage.Case 3 complained about persistent weakness and Dopa-responsive dystonia.Case 4 and 5 were characterized by periodic paralysis.Case 6 showed exercise-induced cramps.Serum potassium was normal in all patients. Slight elevation of serum creatine kinase appeared in 3 cases.Electromyography showed neurogenic pattern in case 1 and 6,myogenic changes in case 4 and 5,and no abnormality in other 2 cases.Marked decrement of active potential amplitude was noted with low frequency repetitive nerve stimuli in case 1 and 2.Four percent to forty percent of muscle fibers showed focal material accumulation in the fibers,which involved mainly type 2 fibers in all cases.The material was stained bright red material with modified gomori trichrome,intensive staining with nicotinamide adenine dinucleotide-tetrazolium reductase,lack activity of succinate dehydrogenase and ATPase.Electron microscopy confirmed bundles of parallel micro-tubular structure in the muscle fiber.Conclusions Myopathy with tubular aggregates has various clinical subtypes and electromyographic pattern.Dystonia or other systemic symptoms could be noted in this disease.The limb girdle myasthenic syndrome can also be accompanied with exercise-induced cramps.

OBJECTIVETo observe the effect of tetrandine on gene expression of collagen type I, collagen type III, transformation growth factor-beta1 and to investigate the inhibitory effect of tetrandine on the scar tissue hyperplasia in rabbits' ears.

METHODSAfter the scar model was formed on the rabbits' ears, the rabbits were divided into 4 groups to receive intro-lesion injection with saline, or prednisolone (Pre) or tetrandrine in low concentration (L-Tet, 1.0 mg/ml) or tetrandrine in high concentration (H-Tet, 7.5 mg/ml). The morphological changes of scar tissue were observed. The changes of fibroblasts quantity and collagen expression were observed with HE and Masson staining. Immunohistochemical study was used to observe the expression level of collagen type I and collagen type III and TGF-beta1. Collagen type I and collagen type III and TGF-beta1, and signal factor Smad 3 mRNA were detected with RT-PCR.

RESULTS(1) 24 days after injury, all the wounds healed completely with formation of red, tough and hypertrophic scar. HE and Masson staining showed significant increase of fibroblasts and collagen density with irregularly arrangement. (2) Compared with that in saline group, the scar in other groups became softer, lighter and thinner, especially in H-Tet group. (3) HE and Masson staining shows the scar in Tet and Pre groups contained less fibroblasts and lower collagen dentsity with comparatively regular arrangement than that in saline group (P < 0.01), especially in H-Tet group. (4) According to the immunohistochemical study, the expression of collage type I and III and TGF-beta was positive in all the groups, but the positive rate and the ratio of collagen density I to III decreased in the order of saline, L-Tet, H-Tet and Pre groups (P < 0.01). (5) PT-PCR detection results showed that the amplification bands brightness of collagen type I and III and TGF-beta1 and signal molecular Smad 3 mRNA in scar tissue were obviously different. Compared with that in saline group, the expression of collagen type I and III and TGF-beta1 and Smad 3 mRNA decreased in Tet and Pre groups (P < 0.01). H-Tet group showed the most obvious reduce in the expression of type I collagen and TGF-beta1 and Smad 3 mRNA. Conclusions Tetrandine can significantly suppress the expression of collagen type I and collagen type III and TGF-beta1 on hypertrophic scar of rabbit ears, and reduce signal factor Smad 3 mRNA' s expression. It may be one of the important mechanism for its inhibitory effect on scar hyperplasia.

Animals ; Benzylisoquinolines ; pharmacology ; Cicatrix, Hypertrophic ; drug therapy ; genetics ; pathology ; Collagen Type I ; genetics ; metabolism ; Collagen Type III ; genetics ; metabolism ; Drugs, Chinese Herbal ; pharmacology ; Ear ; Fibroblasts ; Gene Expression ; Male ; RNA, Messenger ; metabolism ; Rabbits ; Smad3 Protein ; genetics ; metabolism ; Transforming Growth Factor beta1 ; genetics ; metabolism

Objective:To observe the application value of "Internet +" based case teaching method combined with objective structured clinical examination (OSCE) teaching method in the teaching of nursing students in the Department of Nephrology, and analyze its impact on nursing student satisfaction of teaching.Methods:A total of 60 nursing students who practiced in the Department of Nephrology, Jiangsu Provincial People's Hospital from January 2021 to June 2022 were selected as the research subjects. They were randomly divided into observation group and control group, with 30 students in each group. The control group adopted traditional teaching method, and the observation group adopted case teaching method based on "Internet +" combined with OSCE teaching method. SPSS 25.0 statistical software was used for data analysis, and independent sample t-test was used to compare the clinical practical work ability and teaching satisfaction of the two groups of nursing students after teaching. Results:After 4 weeks of teaching, the total scores of clinical thinking ability, disease observation and evaluation ability, mastery of medical knowledge, standardized operation ability, communicative ability, adaptive ability, humanistic care and health literacy of the observation group were higher than those of the control group [(29.84±3.52) vs. (25.67±3.36), (5.81±1.52) vs. (4.34±1.67), (17.93±2.24) vs. (15.52±2.05), (25.72±2.73) vs. (22.17±2.56), (4.18±0.75) vs. (3.56±0.69), (83.48±6.67) vs. (71.26±7.05)], with a statistically significant difference ( P < 0.05); after 4 weeks of teaching, the teaching preparation, teaching process, teaching ability, teaching attitude, teaching effect and total score of the observation group were higher than those of the control group [(17.13±2.42) vs. (15.07±1.84), (36.44±3.12) vs. (34.07±2.49), (21.97±2.36) vs. (21.37±2.01),(17.00±2.36) vs. (16.83±2.23), (17.73±2.00) vs. (14.07±2.55), (110.27±5.51) vs. (101.40±4.58)], and the difference was statistically significant ( P<0.05). Conclusions:The case teaching method based on "Internet +" combined with OSCE can not only effectively improve the clinical practical work ability of nursing students in the department of nephrology, but also improve student satisfaction of teaching.

ObjectiveTo study the Electrocardiogram (ECG) changes in AIDS patients at different age grades. MethodsThe ECG of 400 AIDS patients at different age were analyzed retrospectively. Results(①)The rate of abnormal ECG in the age group of 46 ～50 years was significantly higher than 11 ～ 15(P =0. 008) ,21 ～25( P = 0. 041 ),31 ～ 35 ( P = 0. 022 ),41 ～ 45 ( P = 0. 001 ) and 51 ～ 55 ( P = 0. 047 ) years groups respectively. (②)The rate of bradyarrhythmia in the age group of 46 ～ 50 years was significantly higher than 31 ～ 35 (U = 2. 44) ,36 -40( U = 2. 18 ) ,41 ～ 45 ( U = 2. 57 ) years groups ( P ＜ 0. 05 respectively. (③)The rate of left atrial and ventricular hypertrophy in 11 ～ 15 years group was significantly lower than the age groups older than 46 (except for 51 ～ 55years group) ;those aged ＞60 had higher atrial and ventricular hypertrophy rate than 36 ～40,41 ～45 and 51 ～55years groups ( P ＜ 0. 05 respectively). ConclusionsAIDS patients at all ages may present abnormal ECG, which is positively correlated with age.

OBJECTIVETo explore the mechanism of miR-124 inhibiting the proliferative activity of prostate cancer PC3 cells.

METHODSLuciferase reporter gene assay was used to examine the specific binding ability of miR-124 to PKM2 mRNA 3'-UTR. After miR-124 was transfected mimic to PC3 cells, the expression levels of PKM2 mRNA and protein were detected by real-time fluorescence quantitative PCR (qRT-PCR) and Western blot, respectively. The effects of miR-124 mimic and PKM2 siRNA on the proliferative activity of the PC3 cells were determined by MTT assay.

RESULTSThe expressions of PKM2 mRNA and protein were upregulated (5.12 +/- 0.35) times and (4.05 +/- 0.20) times respectively in the PC3 cells as compared with those in the RWPE-1 cells (P < 0.05). Luciferase reporter gene assay demonstrated that miR-124 targeted PKM2 3'-UTR. At 24 hours after transfection with miR-124 mimic, the PKM2 protein expression in the PC3 cells was downregulated (0.16 +/- 0.04) times (P < 0.05), while the PKM2 mRNA level was not changed significantly (P > 0.05), as compared with the control group. MTT assay showed that both miRNA-124 mimic and PKM2 siRNA could inhibit the proliferation of the PC3 cells, but the former exhibited a greater inhibitory effect than the latter. After transfection with miR-124 mimic and PKM2 siRNA, the cell growth rates were (66.20 +/- 5.10)% vs (82.10 +/- 6.35)% at 24 hours (P < 0.05) and (49.34 +/- 2.37)% vs (70.10 +/- 5.80)% at 48 hours (P < 0.05).

CONCLUSIONmiR-124 can suppress the proliferation of PC3 cells by regulating the PKM2 gene.

Carrier Proteins ; genetics ; metabolism ; Cell Line, Tumor ; Cell Proliferation ; genetics ; Humans ; Male ; Membrane Proteins ; genetics ; metabolism ; MicroRNAs ; genetics ; Prostatic Neoplasms ; genetics ; metabolism ; pathology ; Thyroid Hormones ; genetics ; metabolism ; Transfection

BACKGROUNDInfections caused by gram-negative bacteria (GNB) often lead to high mortality in common clinical settings. The effect of traditional antibiotic therapy is hindered by drug-resistant bacteria and unneutralizable endotoxin. Few effective methods can protect high risk patients from bacterial infection. This study explored the protection of adeno-associated virus 2 (AAV2)-bacteriacidal permeability increasing protein 700 (BPI(700))-fragment crystallizable gamma one 700 (Fc gamma1(700)) chimeric gene transferred mice against the minimal lethal dose (MLD) of E. coli and application of gene therapy for bacterial infection.

METHODSAfter AAV2-BPI(700)-Fc gamma1(700) virus transfection, dot blotting and Western blotting were used to detect the target gene products in Chinese hamster ovary-K1 cells (CHO-K1cells). Reverse transcription-polymerase chain reaction and immunohistochemical assay were carried out to show the target gene expression in mice. Modified BPI-enzyme linked immunosorbent assay was used to identify the target gene products in murine serum. The protection of BPI(700)-Fc gamma1(700) gene transferred mice was examined by survival rate after MLD E. coli challenge. Colony forming unit (CFU) count, limulus amebocyte lysate kit and cytokine kit were used to quantify the bacteria, the level of endotoxin, and proinflammatory cytokine.

RESULTSBPI(1-199)-Fc gamma1 protein was identified in the CHO-K1 cell culture supernatant, injected muscles and serum of the gene transferred mice. After MLD E. coli challenge, the survival rate of AAV2-BPI(700)-Fc gamma1(700) gene transferred mice (36.7%) was significantly higher than that of AAV2-enhanced green fluorescent protein (AAV2-EGFP) gene transferred mice (3.3%) and PBS control mice (5.6%). The survival rate of AAV2-BPI(700)-Fc gamma1(700) gene transferred mice treated with cefuroxime sodium was 65.0%. The bacterium number in main viscera, the levels of endotoxin and proinflammatory cytokine (tumor necrosis factor-alpha and interleukin-1beta) in serum of the AAV2-BPI(700)-Fc gamma1(700) gene transferred mice were markedly lower than that of PBS control mice (P < 0.01).

CONCLUSIONSAAV2-BPI(700)-Fc gamma1(700) gene transferred mice can resist MLD E. coli infection through expressing BPI(1-199)-Fc gamma1 protein. Our findings suggested that AAV2 mediated BPI(700)-Fc gamma1(700) gene delivery could be used for protection and treatment of clinical GNB infection in high-risk individuals.

Animals ; Anti-Bacterial Agents ; therapeutic use ; Antimicrobial Cationic Peptides ; Blood Proteins ; CHO Cells ; Cricetinae ; Dependovirus ; genetics ; Disease Models, Animal ; Escherichia coli Infections ; therapy ; Gene Transfer, Horizontal ; Genetic Therapy ; Mice ; Mice, Inbred BALB C ; Proteins ; genetics ; Receptors, IgG ; genetics ; Recombinant Fusion Proteins ; genetics

Diagnosis, Differential ; Female ; Humans ; Middle Aged ; Pancreatic Neoplasms ; diagnosis ; Solitary Fibrous Tumors ; diagnosis

OBJECTIVETo investigate the relationship between KRAS gene mutations and clinicopathological parameters in patients with colorectal carcinoma (CRC).

METHODSPCR-based direct sequencing was used to detect the mutations of KRAS gene and to correlate between clinicopathological characteristics and the presence of various KRAS mutations in 244 cases of CRC.

RESULTSKRAS mutations were identified in 92 cases (37.7%) of CRC. Five types of mutation were detected at codon 12, including G12D (40 cases, 16.4%), G12V (16 cases, 6.6%), G12A (7 cases, 2.9%), G12S (5 cases, 2.0%) and G12C (4 cases, 1.6%). Two types of mutation were detected at codon 13, including G13D (17 cases, 7.0%) and G13C (2 cases, 0.8%). One type of mutation was detected in codon 61, i.e. Q61K (1 case, 0.4%). KRAS mutation rate was higher in females (45.6%, 36/79) than in males (32.1%, 53/165; P < 0.05), but not related to another clinicopathological characteristics.

CONCLUSIONSFemale CRC patients have a higher KRAS mutation rate than the male patients. KRAS mutation has no significant correlation with patient's age, tumor site, tumor gross appearance, degree of differentiation, depth of invasion, TNM stages, lymphatic invasion, abdominal or distant metastases and prognosis in this study.

Adult ; Aged ; Aged, 80 and over ; Codon ; Colorectal Neoplasms ; genetics ; pathology ; surgery ; Female ; Genotype ; Humans ; Lymphatic Metastasis ; Male ; Middle Aged ; Mutation ; Neoplasm Invasiveness ; Neoplasm Recurrence, Local ; Neoplasm Staging ; Polymerase Chain Reaction ; methods ; Proto-Oncogene Proteins ; genetics ; Proto-Oncogene Proteins p21(ras) ; Sequence Analysis, DNA ; Sex Factors ; Survival Rate ; Young Adult ; ras Proteins ; genetics

OBJECTIVETo analyze the reason of coronary artery aneurysmal dilations in patients after sirolimus-eluting stent implantation.

METHODSLate localized aneurysmal dilations post PCI were evidenced in 4 patients (age 69.5 +/- 3.5 years, 3 males) during follow-up (24.8 +/- 1.8 months). Nine stents were implanted into 7 diseased vessels: 5 Cypher select stents in LAD; 2 Firebird stents and 1 Pixel stent in LCX; 1 Cypher select stent in RCA. Clopidogrel (75 mg/d) was used for one year.

RESULTSAll stents were implanted successfully after predilation. No acute or subacute in-stent thrombosis and MACE was recorded. Follow-up angiogram imaging at 12 months after stenting was normal in all patients. Chest pain reoccurred in these 4 patients at 16, 18, and 22 months post stent implantation and patients were rehospitalized and treated with clopidogrel, asprine, and intravenous nitroglycerin. Angiography showed aneurysmal segment at the stented site of LAD in 3 patients, and at RCA in 1 patient. The symptom disappeared after 3 days intravenous tirofiban treatments and discharged without in-hospital complications. Patients remained symptom-free 3 - 6 months post discharge.

CONCLUSIONLate localized aneurysmal dilations after sirolimus-eluting stents are related to reoccurred angina pectoris post PCI.

Aged ; Coronary Artery Disease ; therapy ; Coronary Restenosis ; therapy ; Drug-Eluting Stents ; Female ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Sirolimus ; administration & dosage