BACKGROUND:Atopic individuals predispose to alergic rhinitis after contacting with an alergen, which is mainly released by IgE-mediated histamine. Alergic rhinitis is a kind of non-infectious inflammatory disease that involves a variety of immune cels and cytokines and is related to Th1 and Th2 immune imbalance. Interferon γ is a cytokine secreted by Th1 cels, while interleukin-4 is a cytokine secreted by Th2 cels. OBJECTIVE:To establish a stable 129Sv mouse model of alergic rhinitis, so as to lay the foundation of establishing gene knockout 129Sv mouse models of alergic rhinitis, and to observe the concentration variation of IgE, interleukin-4 and interferon γ. METHODS: Twenty-four mice were randomly divided into 2 groups: model and control groups. Mice in the model group were sensitized by intraperitoneal injection of ovalbumin to establish mouse models of alergic rhinitis. Mice in the control group were subjected to intraperitoneal injection of PBS. After successful modeling, pathological changes of nasal eosinophils and plasmocyte infiltration were evaluated by nasal mucosa staining. Interleukin 4 and interferon γ levels and ovalbumin-specific IgE antibody concentration were detected by enzyme-linked immunosorbent assay. RESULTS AND CONCLUSION:Enzyme-linked immunosorbent assay showed that compared with the control group, serum ovalbumin-IgE and interleukin-4 concentrations were significantly increased, and Interferon γ concentration was significantly lower in the model group (P < 0.05). Hematoxylin-eosin staining results showed that cilia lodging and submucosal serous gland hyperplasia, eosinophils and plasmocyte infiltration were obvious. These results confirm that a mouse model of allergic rhinitis was successfully constructed in this study and the pathogenesis of allergic rhinitis was related to Th1/Th2 imbalance.

Objective To investigate the effect and mechanism of transplantation of marrow multi- function stem ceils in treating femoral head necrosis.Methods Sixty japanese rabbits were divided into A,B and C groups randomly.After creation of the models of hormone induced necrosis of femoral head;A group was designated as the treatment,B as the control and C as the normal groups.The bone marrow of A group was extracted and isolated and then injected into the left femoral head and the right femoral head was decompressed by drilling only.The rabbits were killed at 8 weeks after the treatment and changes in various parameters were observed,including imaging data of molybdenum target films,CT and MRI;routine pathology with HE staining and ultrastructural alteration by election microscopy.Results Eight weeks after the treatment of transplantation of marrow multifunction stem cells,the X-ray showed only a little change but the typical appearances were revealed by CT and MRI.Pathohistologic manifestation demonstrated decrease of empty bone lacuna,increase of osteoblast and new bone formation.Election microscopy displayed abundant organelles in osteoblasts with few empty bone lacuna,in addition the tansplantation of marrow multifunction stem cells could obtain better reconstraction for the involved femoral head.Conclusions The treatment of transplantation of marrow muhifunction stem cells in femoral head necrosis could accelerate the process of repairing,worthy to be acknowledged as a good and valuable management in rabbits.(J Intervent Radial,2007,16:122-126)

BACKGROUND:HLA-DRB1 is related to the pathogenesis of alergic rhinitis. Construction ofHLA-DRB1 gene knockout animal models not only elucidates the pathogenesis of alergic rhinitis, but also provides a good way for the elucidation of the pathogenesis of alergic rhinitis-related diseases. OBJECTIVE:To establish the HLA-DRB1gene knockout animal models. METHODS:Homozygous, wild-type and heterozygous mice were obtained by inbreeding of the heterozygous mice. Confirmed by gene and protein identification, 24 female wild-type (H2-eb1+/+) mice and 12 H2-eb1-/-mice aged 8 weeks were selected according to the random number table. 12 H2-eb1+/+ mice and 12 H2-eb1-/- mice were sensitized with ovalbumin to establish the mouse models of alergic rhinitis. Another 12 mice were sensitized with PBS as comparison. RESULTS AND CONCLUSION:Compared with the control mice, serum levels of ovalbumin-specific IgE and interleukin-4 were significantly increased, while serum level ofγ-interferon was significantly decreased in the mouse models of alergic rhinitis. Serum levels of IgE and interleukin-4 were lower, while serumγ- interferon level was higher, inH2-eb1-/-gene knockout mice of alergic rhinitis than those in the H2-eb1+/+ gene knockout wild-type mice. These results suggest thatH2-eb1 gene may play an important role in regulating Th1/Th2 imbalance in the pathogenesis of alergic rhinitis.

Objective To investigate the clinical value of virtual touch tissues quantification in the evaluation of kidney stiffness in patients of diabetic nephropathy .Methods A total of 90 cases of diabetic nephropathy were divided into 3 groups:infinitesimal albuminuria ,microalbuminuria and massive proteinuria groups.And other 30 health subjects were taken as control group.The shears wave velocity ( Vs) which reflected the tissue elasticity was measured.The Vs values were compared among different groups.Results In all groups,the highest Vs was present in renal cortex .And compared with the renal cortex ,the Vs of the renal medulla and renal sinus have statistically significant differences [ the normal control group:( 3.65 ± 0.26)m/s,(2.72 ±0.35) m/s,(1.83 ±0.54) m/s,t =9.30,18.20,both P <0.05;Infinitesimal albuminuria group:(2.98 ±0.28)m/s,(2.47 ±0.33)m/s,(1.65 ±0.31)m/s,t=5.97,15.57,both P<0.05;microalbuminuria group:(2.55 ±0.22) m/s,(2.22 ±0.28) m/s,(1.54 ±0.21) m/s,t =3.86, 11.83,both P<0.05;massive proteinuria group:(1.99 ±0.28)m/s,(1.49 ±0.30)m/s,(1.01 ±0.39)m/s, t=5.85,11.48,both P<0.05].The renal cortex Vs of Infinitesimal albumonuria group ,microalbuminuria group and massive proteinuria group show a gradually decreasing trend .And the renal cortex Vs of microalbuminuria group and massive proteinuria group have statistically significant differences compared with the normal control group(t=11.79,17.79,both P<0.05).Conclusions Virtual touch tissues quantification technique can reflect the renal tissue elasticity .It will contribute to the assessment of renal function in patients with early diabetic nephropathy .

Objective To observe the effects of casein and excessive iodine on histomorphalogY and ultrastructure of mouse thymicL Methods Based on 2 × 3 factorial design,the experimental mice were divided into 6 groupg Animal models were estabhshed by feeding the mice with different levels of iodine water and casein food.The levels of iodine were 50,600 μg/L in drinking water and 0(Ⅰ),10%(Ⅱ),20%(Ⅲ)of casein in food respectively.After 12 months,the thyroid weight was measured and the morphology of thyroid was observed under optical and electron microscope.Results Factorial analysis showed that iodine factors obviously affected the thyroid absolute and relative weiights of mice(F=16.23,9.47,P＜0.01),and there was interaction between casein and iodine(F=5.29,4.68,P＜0.01 or＜0.05).Compared wiht 150Ⅰ[(5.91±0.82)rag,(117.0±22.2)mg/kg]and 50Ⅲ[(4.90±0.63)rag,(106.1±13.3)mg/kg]groups.thyroid absolute and relative weights of the mice increased in 600 Ⅰ[(7.60±2.40)mg,(143.3±43.2)mg/kg]and 600Ⅲ[(8.63±1.88)mg,(166.2±39.4)mg/kg]groups(P＜0.05 or＜0.01),respectively.But compared with 600 Ⅰ and 600Ⅲ groups.they were reduced obviously in 600Ⅱ[(5.76±1.13)mg,(109.8±16.5)mg/kg]group(P＜0.05 or＜O.01).Colloid goiter,lymphocyte infiltration were found,some of the follicles epithelial cells appeared active under light and electron microscope in iodine excels group,which,however,decreased obviously along with the increase of casein dose.Conclusions Long-term excessive iodine may cause colloid goiter and inflammation injury of mice,possibly leading the development of thyroiditis in mice,which may be partly reduced by casein.

Animals ; Arecoline ; pharmacology ; Cholinergic Agonists ; pharmacology ; Female ; Guinea Pigs ; In Vitro Techniques ; Male ; Muscle Contraction ; drug effects ; Muscle, Smooth ; physiology ; Pyloric Antrum ; physiology ; Receptor, Muscarinic M3 ; metabolism

OBJECTIVETo determine Verbascoside in Galeobdolon chinense.

METHODHPLC method was used, with the column packed with Kromasil C18(4.6 mm x 150 mm, 5 microns). The mobile phase was a mixture of acetonitrile and 1% acetic acid in a ratio of 13:87, and the ultraviolet wavelength was set at 350 nm.

RESULTThe average recovery was 97.0%, the RSD being 1.69%.

CONCLUSIONThis method is sensitive and reliable. It can be used to determine being Verbascoside in Galeobdolon chinense.

Chromatography, High Pressure Liquid ; methods ; Glucosides ; analysis ; Lamiaceae ; chemistry ; Phenols ; analysis ; Plants, Medicinal ; chemistry

Objective To summarize the technique and managements of complications in endovascular embolization on intracranial aneurysm with Guglielmi detachable coils(GDC),and to evaluate the effect of the treatment.Methods One hundred and thirty six cases with Aneurizym were treated using GDC to embolize the aneurismal sac via femoral artery approach.Results One hundred and thirty six aneurysms were cured.Of them 132 cases recovered clinically,4 patients died.The mortality was 2.9%. The sac of 123 aneurysms were embolizied at 100%,8 cases with 95% embolization,5 with 90% embolization.3 aneurysms reptured during the embolization,cerebral vasospasm happened in 7 eases. microcoil escaped in 2 case.Three recurring cases were cured after second GDC embolization.The technique-related complications occured in 13 cases.No re-bleeding occurred during the 6 to 54-month follow-up.Conclusion Endovascular embolization of intracranial aneurysm with coils is a safe and effective treatment for intracranial aneurysm.Advances in Techniques and treating the complications correctly would decrease the complications and improve future outcomes.

Objective　To study the histopathologic features and pathogenesis of mucosa-associated lymphoid tissue lymphoma (MALT-oma) of salivary glands. Methods　Clinical data, paraffin-embedded sections, immunohistochemical slides (SP method) and electron microscopic features of surgical specimens of 32 cases of salivary gland MALT-oma were studied. Results　The patients were 27 males and 5 females, with a mean age of 54.76 years. The lesions were located in the parotid area in 17 cases, and in the submandibular gland in the remaining 15 cases. Much of the MALT-oma was replaced by infiltration of a great amount of centrocyte-like cells (CCL) as background and occasional large cells (centroblast- or immunoblast-like). In MALT-omas “lymphoepithelial lesions" were present. Immunohistochemically, CD20 expression was found to be positive and CD45RO expression was negative in all MALT-omas. Conclusion　Most of the MALT-omas are low grade malignant tumors and have a “homing back" phenomenon. The cases were managed by surgery and chemotherapy. In a few MALT- omas which turned into high grade malignant tumors, the prognosis was poor. Acquired MALT may develop as a reaction to autoimmune disease and infection. Hyper-immune reaction and MALT hyperplasia under stimulation may result in myoepithelial sialadenitis and lead to MALT-oma of the salivary gland.

Background:Conventional treatment has limited efficacy in relapsed/refractory B-cell lymphoma.Since chimeric antigen receptor Tcell (CAR-T) technology has shown high safety and results in high remission rates,we investigated its efficacy and safety in B-cell lymphoma treatment and analyzed potential affecting factors to provide evidence for therapeutic strategies and applications.Methods:We searched databases including PubMed,Embase,and Cochrane up to July 2019.Meta-analysis 1 was conducted to study the efficacy of CAR-T cell for treating B-cell lymphoma,measuring the response rate and complete remission rate as outcomes.Sub-group analysis was performed for age,pathological type,target antigen,co-stimulatory molecule,and conditioning chemotherapy.Meta-analysis 2 was undertaken on the safety of the treatment with the incidence rate of toxicity (cytokine-releasing syndrome [CRS],neurotoxicity) as an outcome.Results:Seventeen studies were included in the systematic review and meta-analysis.It was found that CAR-T cells had good therapeutic effects in the following cases:B-cell lymphoma (patients ≥65 years old);diffuse large B-cell lymphoma pathological type;patients with treatment target antigen other than CD 19;patients treated with co-stimulatory molecules other than CD28,including 4-1BB+CD28 or 4-1BB;and patients treated with cyclophosphamide/fludarabine pre-treatment protocol conditioning chemotherapy.Although the CRS and neurotoxicity incidences were high,most were reversible with minimal risk of death.Conclusion:CAR-T cell treatment is safe for clinical annlication:however,toxicity effects should be monitored.