Brachytherapy ; adverse effects ; Female ; Humans ; Iodine Radioisotopes ; administration & dosage ; therapeutic use ; Male ; Medical Staff, Hospital ; Occupational Exposure ; analysis ; Radiation Dosage ; Radiation Monitoring

Objective To explore the effect of fibroblast growth factor receptor(FGFR)inhibitor BGJ398 on the vasculogenic mimicry(VM)formation of glioma cells. Methods The phosphor-FGFR(pFGFR)was de-tected by Western blot,the expressions of MMP2 and MMP14 were detected by Western blot and immunocytochem-istry;the VM formation of U87MG and U251MG was tested by tube formation assay;subcutaneously implanted tu-mor model in nude mouse was established and tumor sections were CD34/PAS double-stained to detect the forma-tion of VM in vivo. Results Western blot showed that pFGFR in the experimental groups decreased significantly (P < 0.05);western blot and immunohistochemical staining showed that the expression of MMP2 and MMP14 in the experimental groups decreased significantly compared to the control group. In the tube formation assay ,the tube formation of U87MG and U251MG cells were restrained. In the subcutaneously implanted tumor model ,the VM number of the experimental group(13.85 ± 3.96)was significantly lower than that in the control group(26.40 ± 5.06,P < 0.05). Conclusions In vivo and in vitro experiments confirmed that BGJ398 can inhibit the activa-tion of FGFR,and inhibit the VM formation of glioma cells. These indicate FGFR signaling pathway is involved in the formation of VM.

Bronchi ; Bronchoscopy ; Child ; Foreign Bodies ; surgery ; Humans ; Magnets ; Male

Objective To compare the efficiency of National Early Warning Score (NEWS),Chronic Respiratory Early Warning Score(CREWS) and BAP-65(elevated Blood urea nitrogen,Altered mental status,Pulse＞109bpm,age＞65 years)among patients with AECOPD (acute exacerbations of chronic obstructive pulmonary disease).Methods Totally 181 patients with AECOPD were investigated by these three scales,and the efficiency of NEWS,CREWS and BAP-65 was compared.Results The scores of NEWS,CREWS and BAP-65 in the death group were higher than those in the survival group and the general ward group(P＜0.01).Regarding the predicted results of hospital death,the area under the ROC curve of NEWS,CREWS and BAP-65 was 0.878,0.836 and 0.774,respectively,and the differences were not statistically significant(P＞0.05);for predicted results of ICU admission,the area under the ROC curve of NEWS,CREWS and BAP-65 was 0.826,0.813 and 0.716,respectively,and the differences were not statistically significant (P＞0.05).Conclusion NEWS,CREWS and BAP-65 have satisfied predictive efficiency for prognosis,and NEWS and CREWS are much easier and faster to use.

OBJECTIVETo study the biological characteristics of bone marrow-derived mesenchymal stem cells (MSC) in children with aplastic anemia (AA) and evaluate the relationship of biological characteristics of MSC with the efficacy of immunosuppressive therapy (IST).

METHODSBone marrow-derived MSC were cultured and isolated from 29 children with AA and 5 normal controls. Seventeen out of the 29 cases received IST. Surface markers and cell cycle of MSC at passage 3 were analyzed by flow cytometry. The inhibition of lymphocyte proliferation by MSC was evaluated and TGF-beta 1 level in the supernatant of MSC was detected using ELISA.

RESULTSGrowth abnormality of MSC was found in 16 children with AA (55%), characterized by deficiency and poor proliferation of MSC, and was frequently seen in patients with severe AA or in patients with more prolonged disease course or in patients with radiation/chemotherapy-induced AA. Surface markers, cell cycle and TGF-beta 1 level in the supernatant of MSC at passage 3 and the inhibition of lymphocyte proliferation by MSC in the AA group were similar to those in the control group. Eight out of nine patients with normal MSC growth achieved complete remission (CR) but only 2 out of 8 patients with abnormal MSC growth achieved CR following IST ( P<0.01).

CONCLUSIONSBone marrow-derived MSC growth abnormality occurs in most of children with AA. MSC abnormality may affect adversely hematological recovery following IST.

Adolescent ; Anemia, Aplastic ; drug therapy ; etiology ; Bone Marrow Cells ; physiology ; Cell Proliferation ; Child ; Child, Preschool ; Female ; Humans ; Immunosuppressive Agents ; therapeutic use ; Lymphocyte Activation ; Male ; Mesenchymal Stromal Cells ; physiology ; Transforming Growth Factor beta1 ; biosynthesis

OBJECTIVETo observe the effects and mechanisms of Pongamia pinnata root flavonoids (PRF) on the experimental gastric ulcer induced by acetic acid and to study the mechanism of PRF on the quality of ulcer healing.

METHODSThe models were established by acetic acid erosion, the quality of ulcer healing of PRF on the model of gastric ulcer were observed. The contents of epidermal growth factor (EGF) in serum were determined by radioimmunoassay. The expression of EGF and transforming growth factor-alpha (TGF-alpha) were detected by immunohistochemistry (SP).

RESULTSPRF significantly inhibited ulcerative formation induced by acetic acid (P < 0.05, P < 0.01). PRF could significantly increase the EGF and TGF-alpha (P < 0.05, P < 0.01) expression of para-ulcer mucosa tissue and improve the EGF contents in blood serum (P < 0.05, P < 0.01).

CONCLUSIONPRF increases the contents of EGF in serum and the expression of EGF and TGF-alpha in the tissue around gastric ulcer which might be one of possible mechanisms that PRF improves quality of ulcer healing.

Acetic Acid ; Animals ; Epidermal Growth Factor ; blood ; Female ; Flavonoids ; pharmacology ; Gastric Mucosa ; metabolism ; Male ; Millettia ; chemistry ; Plant Roots ; chemistry ; Rats ; Rats, Sprague-Dawley ; Stomach Ulcer ; chemically induced ; drug therapy ; metabolism ; Transforming Growth Factor alpha ; metabolism

OBJECTIVEThe activity of deer serum albumin on proliferation of rat osteogenic-like cells UMR-106 and the IGF-I secretion were investigated in order to elucidate pilose antler's bone-strengthening mechanism.

METHODDeer serum albumin was isolated from freeze-dry pilose antler powder extract. The methods were Sephacryl S-200HR gel filtration, POROS 20QE ion-exchange and TSK G3000SW chromatographies. The effect of deer serum albumin on proliferatio of UMR-106 cells was assaied by MTT, and the secretion of IGF-I of UMR-106 cells was assaied by RIA.

RESULTDeer serum albumin, with the molecular weight of 56.3 kDa, significantly increased the proliferation rate of the osteoblast-like UMR-106 cell and IGF-I secretion. When concentration of deer serum albumin reached 0.149 microg x mL(-1), UMR-106 cell proliferation rate was 241.03% and IGF-I secretion was 66.89 ng x mL(-1).

CONCLUSIONThe concentration of deer serum albumin, from 14.9 ng x mL(-1) to 14.90 microg x mL(-1), significantly increased the proliferation rate of the osteoblast-like UMR-106 cell and IGF- I secretion.

Animals ; Antlers ; chemistry ; Bone Neoplasms ; pathology ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Deer ; Insulin-Like Growth Factor I ; secretion ; Materia Medica ; isolation & purification ; pharmacology ; Osteoblasts ; metabolism ; pathology ; Osteosarcoma ; pathology ; Rats ; Serum Albumin ; isolation & purification ; pharmacology

OBJECTIVETo observe the in vivo distribution of mesenchymal stem cells (MSCs) after administrated by intra-bone marrow (IBM) or intravenous (i.v.), and compare the effects on hematopoiesis reconstitution and GVHD in rat BMT models.

METHODS(1) MSCs from male Wistar rats marked with CFSE were injected into the bone marrow cavity (IBM) or the vein (i.v.) of recipient rats, and observed the distribution of MSCs in vivo. (2) Allogeneic BMT model of Fischer344 rats (RT1A(1)) to Wistar rats (RT1A(u)) was established. The recipient rats were exposed to 8 Gy of gamma irradiation 1 day before transplantation. The 6 groups were (1) IBM group [IBM-injection of MSCs + IV-injection of bone marrow cells (BMC)]; (2) IV group (i.v.-injection of MSCs (i.v.) + i.v.-injection of BMC); (3) BMT group (only i.v.-injection of BMC); (4) MSCs control group (only i.v.-injection of MSC); (5) normal control group and (6) irradiation control group.

RESULTS(1) After i.v.-injection, large numbers of the MSCs lodged in lungs while small numbers in the peripheral blood, liver, thymus and spleen, and a few marked MSCs could be seen in bone marrow. After IBM injection, most cells distributed in long bones and those lungs were less than that in i.v. group. (2) Co-transplantation of MSCs (IBM/IV) could accelerate the recovery of hematopoiesis, including the recovery of WBC, hemoglobin and platelet, and in IBM-injection was more effective in the recovery of hematopoiesis than that in i.v. group. (3) Incidence rate of GVHD in BMT group was 42% (3/7), and no GVHD occurred in co-transplantation groups. (4) Recovery of CFU-Mix and CFU-MSCs could be seen at 21st and 30th day after transplantation in co-transplantation groups, and IBM-injection was more effective than i.v.-injection.

CONCLUSION(1) IBM-injection results in most MSCs distributed in long bones. (2) MSCs improve the survival rate after BMT. (3) Co-transplantation of MSCs accelerates the recovery of hematopoiesis and reduces the morbidity of GVHD. (4) MSC promotes reconstitution of hematopoietic cells and bone marrow MSCs in recipient rates and the effects of MSCs administrated via IBM is more effective than via i.v.

Animals ; Bone Marrow Transplantation ; Female ; Graft vs Host Disease ; prevention & control ; Hematopoiesis ; Male ; Mesenchymal Stem Cell Transplantation ; methods ; Models, Animal ; Rats ; Rats, Wistar ; Transplantation, Homologous

When hematopoietic stem cells (HSCs) were administrated by intravenous infusion (IV), most of them were trapped in some nonhematopoietic organs as like lungs that had abundant blood capillaries. Only a small fraction of injected cells could home to the bone marrow, which reduced the engraftment of HSCs. The purpose of intra-bone marrow (IBM) transplantation was to facilitate the homing of HSCs directly. Based on the established murine model for allogeneic umbilical cord blood transplantation (UCBT) by IBM injection, the objective of this study was to compare the distribution of fetal and neonatal peripheral blood (FNPB) mononuclear cells (MNC) in vivo and the efficacy of HSCT by different routes of administration in mice. BALB/c recipient mice exposed to sublethal dose 60Co gamma-ray were transplanted with FNPBMNCs from C57BL/6 mice. Recipient mice were divided into six groups at random: unilateral-IBM group; bilateral-IBM group; IV group; bilateral-IBM + IV group; irradiated control group and normal group. The distribution of CFSE-labeled FNPBMNCs in the recipients was observed in frozen sections of different organs or by flow cytometry. The survival rate, engraftment level, recovery of hematopoietic function and GVHD of recipient mice were studied. The results showed that infused by IBM route, FNPBMNCs mainly accumulated in the bone marrow (BM) cavity of the injected side tibia. Some of them could enter the BM of noninjected bones via blood circulation and few were trapped in the lung. Though same amount of FNPBMNCs were injected into recipient mice of unilateral and bilateral-IBM group, less cells could leak into peripheral blood or other tissues when transplanted by bilateral-IBM route. Therefore, in term of accelerating hemopoietic recovery, the injection of IBM route was better than IV route, especially bilateral IBM injection of HSCs, which neared the normal level of peripheral blood cells and colony-forming units of bone marrow nucleated cells at day 21 after transplantation, followed by unilateral-IBM group and bilateral-IBM + IV group. The percentages of H-2Db cell subsets in the three IBM groups were much higher than that in IV group. There was no significant difference of the engraftment level in the injected side tibia between the unilateral and bilateral-IBM group. When secondary transplantation was performed, the engraftment level in bilateral-IBM group was still much higher than that in IV group. At day 90, the survival rates of IBM groups were all > or = 80%, while that of IV group was only 50%. It is concluded that bilateral-IBM route can facilitate the homing of more HSCs, accelerate the engraftment of HSCs and hematopoietic reconstitution, which promoted the efficacy of IBM-HSCT.
Animals ; Female ; Graft vs Host Disease ; prevention & control ; Hematopoietic Stem Cell Transplantation ; methods ; Hematopoietic Stem Cells ; cytology ; physiology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Random Allocation ; Whole-Body Irradiation

The influence on 10 kinds of ginsensides of different processed methods of Panacis Quinquefolii Radix was discussed. White Panacis Quinquefolii Radix (sliced and dried at -80 °C), red Panacis Quinquefolii Radix( steamed, sliced and dried at -80 °C) and commercial Radix Panacis Quinquefolii (dried by electric blast air) processed by different methods. HPLC-PDA-ESI- MS method was established before by our team. Ten kinds of ginsenosides of them were determined. The content of total ginsenosides were as follow: commercial Panacis Quinquefolii Radix > white Panacis Quinquefolii Radix > red Panacis Quinquefolii Radix. Compared with white Panacis Quinquefolii Radix, the content of Re, Rc, Rb3 and Rb2 of Red Radix Panacis Quinquefolii decreased but increased that of Rg,, Rb1. Both Rg2 and Rg, were not found in white Panacis Quinquefolii Radix and commercial Panacis Quinquefolii Radix by PDA detector, and low response in ESI-MS, while red Panacis Quinquefolii Radix was to the high content that of 0. 027% and 0.040 1%. The constituent of RA0 of red Panacis Quinquefolii Radix was higher than the other two. After Panacis Quinquefolii Radix processed, the kind and content of ginsensides were significantly changed. The constituent of some kinds of ginsensides was increased and some decreased. Rf was not found in all Panacis Quinquefolii Radix samples which were consistent with the former documents.
Chemistry, Pharmaceutical ; methods ; Ginsenosides ; chemistry ; Mass Spectrometry ; Panax ; chemistry ; growth & development ; Plant Extracts ; chemistry ; Plant Roots ; chemistry