AIM: To explore the effect of low concentration of N-methyl-N-nitro-N-nitroguanidine (MNNG) on p38MAPK, and the function of glutathione (GSH) on p38MAPK. METHODS: Western blotting was applied to detect the p38MAPK phosphorylation in MNNG treatment group and control group. To study the effect of GSH on MNNG-regulated p38MAPK activity, the intracellular GSH level was reduced by pretreatment of L-buthionine-S, R-sulfoximine (BSO). Assuming the absorbance of band in control group as 1.0, the relative P/T values of the treatment groups were calculated, with the “P” served as absorbance values of phospho-p38MAPK and the “T” as absorbance values of total p38MAPK. RESULTS: In BSO pretreated groups,the relative P/T in samples treated with MNNG for 2.5 h was 0.84, and became 2.19 with 3 h more incubation in the fresh medium. CONCLUSION: GSH deletion increases the activity of p38MAPK in MNNG treatment.

AIM: To identify the effect of alkylating agent N-methyl-N'- nitro-N-nitrosoguanidine (MNNG) with low concentration on JNK/SAPK and p38MAPK and the origins of JNK/SAPK and p38MAPK cascade.METHODS: p38 and JNK kinase activity were detected by immunoprecipitation and Western immunoblotting in intact and enucleated Vero cells.RESULTS: With the same experimental conditions, low concentration of MNNG inhibited JNK kinase in both intact cell and enucleated Vero cell. MNNG activated p38 kinase in intact cell while no effect on p38 kinase in enucleated cell was observed.CONCLUSION: Inhibition of JNK/SAPK by low concentration of MNNG was independ of a nuclear signal while MNNG activation of p38MAPK may depend on a nuclear signal.

Aim To investigate total flavones of epimedium (TFE) modulation of glycine-activated current (IGly) in acutely dissociated rat spinal dorsal horn neurons. Method Whole-cell patch-clamp technique was used. Result TFE inhibited IGly reversibly in a concentration-dependent manner. It shifted the concentration-response relationship to the right without altering the maximum response and Hill coefficient of the IGly. TFE did not change the ion selectivity of glycine receptor either. Conclusion These results indicate that TFE directly inhibited the glycine receptor response by decreasing the affinity of glycine to its receptor.

Through the addition of discussion course associated with judicial expertise during the pre medical education, integration of true and typical forensic pathological cases into basic medical theory and experimental education, further addition of optional course of forensic medicine,and guiding the medical students applying the scientifically training projects about forensic pathology, students may improve their learning interesting and clinical thought, and are made early warning and increase the abilities of preventing and dealing with the suddenly medical tangles in the future, at the same time, the medical teachers also increase their professional levels and teaching qualities.These benefit the growing up of high quality medical doctors, decrease and even prevent the happening of medical tangles.

Objective To explore the anti- inflammatory of pricking blood therapy in acute gouty arthritis rats. Methods 60 Sprague-Dawley rats were equally divided into normal group, bloodletting normal group, sham group, arthritis group, bloodletting group and ibuprofen group. The acute gouty arthritis model was established with injecting uric acid sodium salt into the right ankle joint cavity. The ibuprofen group was administrated with ibuprofen intragastrically, the bloodletting normal group and bloodletting group were pricked the right Kunlun (BL60) acupoint. The cross section diameter of the right ankle joint were measured before and after treatment. Levels of mRNA and protein of interleukin (IL)-10 and IL-4 expressed in ankle were determined with RT-PCR and Western blotting Results The cross section diameter increased in the bloodletting group compared with the normal group after treatment (P<0.05), and decreased (P<0.05) compared with the arthritis group and the ibuprofen group, while the expression of IL-10 mRNA increased (P<0.05) compared with the normal group, the arthritis group and the ibuprofen group, as well as the IL-10 protein compared with the normal group and the arthritis group (P< 0.05). The expression of IL-4 mRNA and protein increased without significance (P>0.05) in the bloodletting group compared with the normal group. Conclusion IL-10 may play a role of anti-inflammatory in pricking bloodletting therapy for acute gouty arthritis.

Here we report the diagnosis and treatment of a rare IgG4-related kidney disease with nephrotic syndrome as the first manifestation. A 62-year-old male patient, presented with edema in both lower limbs and foam urine, had a history of "lung malignant tumor with brain and lymph node metastasis". The increase of IgG4 and decrease of glomerular filtration rate were detected at admission, and the pathological consideration of renal biopsy was membranous nephropathy with IgG4-related tubulointerstitial nephritis. After the combination of low-dose glucocorticoids therapy and rituximab treatment, the patient showed good prognosis in a 9 month follow-up.

Primary age-related tauopathy (PART) is characterized by tau neurofibrillary tangles (NFTs) in the absence of amyloid plaque pathology. In the present study, we analyzed the distribution patterns of phosphorylated 43-kDa TAR DNA-binding protein (pTDP-43) in the brains of patients with PART. Immunohistochemistry and immunofluorescence double-labeling in multiple brain regions was performed on brain tissues from PART, Alzheimer's disease (AD), and aging control cases. We examined the regional distribution patterns of pTDP-43 intraneuronal inclusions in PART with Braak NFT stages > 0 and ≤ IV, and a Thal phase of 0 (no beta-amyloid present). We found four stages which indicated potentially sequential dissemination of pTDP-43 in PART. Stage I was characterized by the presence of pTDP-43 lesions in the amygdala, stage II by such lesions in the hippocampus, stage III by spread of pTDP-43 to the neocortex, and stage IV by pTDP-43 lesions in the putamen, pallidum, and insular cortex. In general, the distribution pattern of pTDP-43 pathology in PART cases was similar to the early TDP-43 stages reported in AD, but tended to be more restricted to the limbic system. However, there were some differences in the distribution patterns of pTDP-43 between PART and AD, especially in the dentate gyrus of the hippocampus. Positive correlations were found in PART between the Braak NFT stage and the pTDP-43 stage and density.
Aged ; Aged, 80 and over ; Aging ; metabolism ; pathology ; Brain ; metabolism ; pathology ; DNA-Binding Proteins ; metabolism ; Disease Progression ; Female ; Humans ; Immunohistochemistry ; Inclusion Bodies ; pathology ; Male ; Middle Aged ; Neurofibrillary Tangles ; metabolism ; pathology ; Neurons ; metabolism ; pathology ; Severity of Illness Index ; Tauopathies ; metabolism ; pathology

Brain ; pathology ; China ; Humans ; Organ Preservation ; standards ; Tissue Banks ; ethics ; standards