Child ; Collagen Type IV ; Female ; Humans ; Immunohistochemistry ; methods ; Kidney ; pathology ; Male ; Nephritis, Hereditary ; diagnosis ; pathology

ObjectiveTo investigate the protective effects of Astragalus injection (AI) on hydrogen peroxide (H2O2 ) induced injury in cardiomyocytes. MethodsCultured neonatal rat cardiomyocytes were divided into: control group; H2O2 group, in which cells were treated with H2O2 0.15 mmol/L for 5 h; AI+H2O2 group, in which cells were pretreated with AI (with final concentration of 10, 30， 90 g/L) 30 min before H2O2 treatment; and AI (90 g/L)+L-NAME (20 μg/L). The cardiomyocyte viability was analysed by MTT assay, lactate dehydrogenase (LDH) activity and nitric oxide (NO) content were detected in culture media. Reactive oxygen species (ROS) were measured with laser-confocal-microscopy system. Mitochondrial memberane potential (ΔΨm) and apoptosis rate were measured with flowcytometry. ResultsCardiomyocyte viability in AI (10,30, 90 g/L) groups were higher than that in H2O2 group (P＜0.05). Compared with H2O2 group, LDH activity and ROS content in AI (90 g/L) group decreased (P＜0.01), NO content increased (P＜0.01), ΔΨm of cardiomyocytes increased (P＜0.05) and apoptosis rate decreased (P＜0.05). Compared with AI (90 g/L) group, after treatment combining with L-NAME, LDH activity and ROS content increased (P＜0.01), NO content decreased (P＜0.01), ΔΨm of cardiomyocytes decreased (P＜0.05) and apoptosis rate increased (P＜0.05). ConclusionAI can protect cardiomyocytes from H2O2 injury by increasing NO content and inhibiting cardiomyocyte apoptosis induced by ROS.

Purpose:To evaluate the efficacy, toxicity and side effects of the combination of gemcitabine and cisplatin in the treatment of patients with non small cell lung cancer(NSCLC).Methods:35 patients with NSCLC diagnosed by pathology or cytology were enrolled into the study. The patients received gemcitabine 1 000 mg/m 2 on d 1,8 and 15 and cisplatin 80 mg/m 2 on d 1 of 28 day cycle (4 week regiment), or received gemcitabine 1 200 mg/m 2 on d 1,8 and cisplain 80 mg/m 2 on d 8 of the 21 day cycle (3 week regiment). Results:28 of all the cases could be evaluated. The total response rate was 53.6% (all of them were partial response). Response rate of 4 week regiment and 3 week regiment were 58.3% and 50.0%, there was no significant difference between the two groups. The major toxicity and side effects included leucopenia and thromasthenia, but they were acceptable. Conclusions:The combination of gemcitabine and cisplatin is an effective and tolerable regiment in the treatment of NSCLC. Further study on the efficacy, toxicity and side effects in the treatment of NSCLC with different regimens should be carried out in the future.

Objective To prospectively compare MR pulmonary perfusion imaging with quantitative HRCT for the detection of mild chronic obstructive pulmonary disease (COPD) and classification of COPD.Methods Sixty-two consecutive patients with COPD and 17 healthy volunteers underwent pulmonary function test (PFT),HRCT and MR perfusion imaging on the same day.According to the Global Initiative for Chronic Obstructive Lung Disease (GOLD),all COPD patients were classified into 4 stages:stage Ⅰ (n =19),stage Ⅱ (n =17),stage Ⅲ (n =14),stage Ⅳ (n =12).The signal intensity of perfusion defects (SIPD),signal intensity of normal lung perfusion (SInormal) on 3D MR perfusion were obtained through postprocessing and the signal intensity ratio (RSI) was calculated.The total lung volume (TLV) was calculated automatically on HRCT and the total emphysema volume (TEV) was obtained by applying -950 HU thresholds.The TEV/TLV was deduced as emphysema index (EI).Several comparisons were made between the volunteers and COPD patients by one-way ANOVA and Kruskal-Wallis test.Results The RSI,SIPD,PEI,MSI,MSD values of MRI perfusion in volunteers (43.9 ± 7.2,48.2 ± 19.7,31.4,55.7,44.1) were significantly different from those in patients with COPD (18.1 ± 8.1,47.4 ± 20.0,8.6,30.2,22.7) (P ＜ 0.01).The RSI showed a significant difference between stage Ⅰ (24.4 ± 9.8) and stage Ⅲ (15.9 ± 5.3) or Ⅳ (9.2 ± 2.7) and between stage Ⅱ (19.9 ± 3.1) and stage Ⅳ (t =4.05-6.64,P ＜0.01).However,all MRI perfusion parameters between stage Ⅰ and stage Ⅱ,stage Ⅱ and stage Ⅲ,stage Ⅲ and stage Ⅳ were no differences (t =2.00-4.46,P ＞ 0.05).The median of EI in volunteers and stage Ⅰ-Ⅳ COPD patients were 1.2,3.8,8.0,13.7,18.3,and the quartile range were 3.7,7.1,9.2,10.5,7.7,respectively.The EI in volunteers showed significant differences with that of stage Ⅱ-Ⅳ COPD and the EI of stage Ⅳ was different from that of stage Ⅱ or Ⅰ (t =-7.32--1.85,P ＜ 0.01),but there was no significant difference between volunteers and stage Ⅰ COPD (t =-1.99,P ＞ 0.05).Conclusions The RSI of MRI is more sensitive than that of HRCT for assessing mild COPD.The severity of COPD could be reflected by MRI perfusion and HRCT.

To study the in situ intestinal absorption kinetics and compatibility influence of peimine and peiminine in rats, the absorption of peimine and peiminine in small intestine (duodenum, jejunum and ileum) and colon of rats was investigated using in situ single-pass perfusion method and the drug content was measured by HPLC-ELSD. Perfusion rate, pH, concentration of drug, gender and bile duct ligation can significantly affect the absorption of peimine and peiminine, the Ka, and Papp values in the condition of pH 6.8 and pH 7.4 had significant difference (P<0.01), as drug concentration irlcreased, the absorption parameters of peimine and peiminine decreased, Ka and Papp between low concentrations and middle concentrations was significant difference (P<0.01). Verapamil can not affect Ka and Papp of peimine and peiminine which are in the extract (P> 0.05). Bitter almonds and licorice can significantly reduce the absorption of peimine and peiminine with the usual dose (P<0.01), extracted separately and together had no significant difference on Ka and Papp (P> 0.05). Experimental results show that the absorption features of peimine and peiminine are basically the same, both of them could be absorbed at all segments of the intestine in rats and had no special absorption window, and with significant differences between male and female individuals. The absorption of peimine and peiminine complies with the active transport and facilitated diffusion in the general intestinal segments. Bitter almond and licorice can reduce the intestinal absorption rate ofpeimine and peiminine.
Animals ; Cevanes ; administration & dosage ; isolation & purification ; pharmacokinetics ; Colon ; metabolism ; Drugs, Chinese Herbal ; isolation & purification ; pharmacology ; Female ; Fritillaria ; chemistry ; Glycyrrhiza ; chemistry ; Glycyrrhizic Acid ; isolation & purification ; pharmacology ; Intestinal Absorption ; drug effects ; Intestine, Small ; metabolism ; Male ; Perfusion ; Plant Roots ; chemistry ; Plants, Medicinal ; chemistry ; Prunus dulcis ; chemistry ; Rats ; Rats, Sprague-Dawley ; Sex Factors

BACKGROUND: Tumor-adopted immunity and gene transduction technique are used to introduce tumor necrosis factor-α vector into carrier cells, which are then re-infused into the body so that cancer cells can be killed by tumor necrosis factor-α more directly and effectively with fewer side effects on the other tissues due to high local expression.OBJECTIVE: To study the bioactivity of in vitro cultured tumor necrosis factor-α transduced tumor-infiltrating lymphocytes as well as the inhibitory effects on cancer cells of cancer-loaded rats infused in different ways.DESIGN: A randomized controlled study based on experimental animals.SEETING: Cancer Research Institute of China Medical University.MATERIALS: This study was carried out at the Cancer Research Institute and the Experimental Animal Department, China Medical University,between January 2000 and December 2001. TJ8510 cell line (human brain glioblastoma cell line) was provided by the Neurological Research Institute of Tianjin Medical University Affiliated Hospital. The experimental animals were 36 BALB/C nude mice congenitally having no thymius.METHODS: Based on the establishment of tumor necrosis factor-α retroviral transduction system and the preparation of cartier cells tumor-infil-trating lymphocytes, the monoclonal virus cell line PLC-2 and PLJC-5available were used to introduce marked gene NeoR and targeted gene tumor necrosis factor-α into tumor-infiltrating lymphocytes, respectively.Then cell proliferation, tumor necrosis factor expression and in vitro antitumor activity were examined. After cancer cell inoculation, the 36 nude mice were randomly divided into 6 groups: local infusion control group, local tumor-infiltrating lymphocytes infusion group, local tumor necrosis factor-tumor-infiltrating lymphocytes infusion group, venous infusion control group, venous tumor-infiltrating lymphocytes infusion group and venous tumor necrosis factor-tumor-infiltrating lymphocytes infusion group, and the therapeutic effects on the cancer-loaded mice were observed.proliferation and tumor necrosis factor-α expression in tumor-infiltrating oR-tumor-infiltrating lymphocytes and tumor necrosis factor-tumor-infiltrating lymphocytes was not significantly different from each other (P ＞ 0.05).NeoR-tumor-infiltrating lymphocytes, though not significantly different (P ＞0.05), significantly differ from that of tumor necrosis factor-tumor-infiltrating lymphocytes (P ＜ 0.01); moreover, tumor necrosis factor-tumor-infiltrating lymphocytes were found to express higher tumor necrosis factor-α conactivity did not significantly differ between tumor-infiltrating lymphocytes and NeoR-tumor-infiltrating lymphocytes (P ＞ 0.05), but obviously increased come of the animal experiment: 40 days after tumor necrosis factor-tumorinfiltrating lymphocytes infusion, cancer size in local tumor necrosis factortumor-infiltrating lymphocytes infusion group was found smaller than that in local infusion control group [(307±42) and (2 048±278) mm3, P ＜ 0.01],and it was also smaller in venous tumor necrosis factor-tumor-infiltrating lymphocytes infusion group than that in venous control group [(954±195)and (1 989±305) mm3 , P ＜ 0.05].CONCLUSION: Tumor necrosis factor-α gene transduced tumor-infiltrating lymphocytes could effectively express tumor necrosis factor, exerting higher and in vivo anti-tumor effects than tumor-infiltrating lymphocytes in cancer-loaded nude mice. No obvious inhibitory effects on the growth of subcutaneous solid carcinoma could be observed in nude mice after venous infusion of human brain glioblastoma tumor-infiltrating lymphocytes, but the inhibitory effects became obvious due to venous infusion of tumor necrosis factor-tumor-infiltrating lymphocytes and significant due to local tumor necrosis factor-tumor-infiltrating lymphocytes infusion, indicating that local infusion is the preferable way in the treatment of glioblastoma by immuno-gene therapy.

A comparable study were carried out by determination of trace elements on five marine-derived shell traditional Chinese medicine (TCM) (Ostreae Concha, Haliotidis Concha, Margaritifera Concha, Meretricis Concha, and Arcae Concha), which were recorded in the Chinese Pharmacopoeia (2010 version). Seven trace elements in 51 batches of this type of shell TCM were analyzed by Inductively Coupled Plasma Mass Spectrometry (ICP-MS), combined with principal component analysis (PCA) methods. The content of element Se, which exhibited significant differences among different drugs, could be used as a key element to distinguish this type of drugs. Meanwhile, the contents of elements Co, Cu, Mo, and Ba in Haliotidis Concha, Co and As in Margaritifera Concha, Mo and As in Meretricis Concha, Mo, As, and Ba in Arcae Concha, and Zn in Meretricis Concha were relatively stable. In the PCA plot, Arcae Concha and Meretricis Concha could be efficiently distinguished from Ostreae Concha together with Haliotidis Concha, and Margaritifera Concha. The results also showed a correlation with their medicinal function. In conclusion, trace elements in marine-derived shell TCM could not be neglected for their quality control.
Animal Shells ; chemistry ; Animals ; Aquatic Organisms ; chemistry ; Bivalvia ; chemistry ; Mass Spectrometry ; Medicine, Chinese Traditional ; Trace Elements ; analysis

The establishment of clinical medicine with professional degree is an important reformation of high-level professionals in medical field. With the expansion of the number of postgraduates of clinical medicine with professional degree, how to establish and perfect the training mode and how to improve the training quality has become an important research for the postgraduate education with professional degree. This paper discusses the establishment and perfection of training mode of full-time postgraduates of clinical medicine with professional degree by combining the documents and development of professional degree in my university.

Objective To investigate the clinical significance of myasthenia gravis (MG) associated autoantibodies.Methods Titin,ryanodine receptor (RyR)and acetylcholine receptor (AChR) antibodies were examined in the sera of 74 myasthenia gravies patients by ELISA.Results AChR,Titin, RyR antibodies were detected in 77.0% (57/74),39.2% (29/74) and 32.4% (24/74) of the MG patients,respectively.For thymoma MG,AChR,Titin and RyR antibodies were detected in 76.2% (16/21),71.4% (15/21) and 52.4% (11/21) respectively.For late onset MG,Titin and RyR antibodies were detected in 77.3% (17/22) and 50.0% (11/22) respectively.With respect to the modified Osserman classification,the positve rate for Titin and RyR antibodies is much higher in more severe patients (X~2= 16.094,P=0.001;X~2=11.226,P=0.011).Titin antibodies was significantly related with RyR antibodies (r=0.380,P=0.001).Conclusions Titin and RyR antibodies show high sensitivity for thymoma MG,and the combination of serological and radiological testing can increase both sensitivity and specificity in diagnosis of thymoma MG.The levels of the two antibodies may serve as important prognosis markers in MG.The induction of the immune response against Titin and RyR and the possible pathogenic effects of the two antibodies will be further studied.

Objective To investigate the diagnostic technique of Alport syndrome(AS)by immunohistochemical staining of type Ⅳ collagen ? chains on paraffin-embedded renal sections.Methods Renal biopsies were obtained from 2 patients with autosomal recessive form of AS,2 female patients and 2 male patients with X-linked dominant form of AS and 2 patients with hematuria(1male and 1 female).AS was diagnosed according to symptoms,family history,pathology,immunofluorescence staining of type Ⅳ collagen ? chains on renal and skin biopsies and gene analysis.Normal portions of nephrectomized kidneys from 2 patients with renal tumor were used as controls.Type Ⅳ collagen ? chains were stained by two-step immunohistochemistry staining method on paraffin-embedded renal sections.Three antigen retrieval methods including autoclave heating,pepsin digestion and proteinase were investigated to find the best antigen retrieval method for type Ⅳ collagen ? chains.The findings were compared with those examined by immunofluorescence staining on fresh frozen sections.Results By immunohistochemistry staining,type Ⅳ collagen ?3 and ?5 chains showed continuous linear pattern along glomerular basement membrane on sections from the controls and the hematuria patients,intermittent linear pattern for X-linked dominant female AS patients,negative for X-linked dominant male AS patient.For patients with autosomal recessive AS,the staining of type Ⅳ collagen ?3 and ?5 chains were negative on glomerular basement membrane,but ?5 chain was positive on glomerular capsules and partial tubular basement membrane.The results were the same as those examined by immunofluorescence staining.Conclusion AS can be diagnosed by immunohistochemistry staining of type Ⅳ collagen on paraffin-embedded renal sections,which is a new technique for diagnosis of AS in China.