OBJECTIVETo investigate the reconstruction of thumb II-III degree defect by big toe wrap-around flap combined with second toe proximal interphalangeal joint.

METHODSBetween May 2004 to July 2012, 25 cases with thumbs II-III degree defects were treated. The ipsilateral big toe wrap-around flap combined with second toe proximal interphalangeal joint was designed to reconstruct the thumb defects based on the thumb size on the healthy side. The distal end of hallux was covered by flap at tibial side. The wound at the fibula side was covered by skin graft and flap. The bone defect at the second toe was filled with remnant hallux or iliac bone.

RESULTSAll the 25 reconstructed thumbs survived completely. The patients were followed up for 6-26 months without any joint degeneration. According to the finger reconstruction functional criterion publicized by China Medical Association, the finger function was assessed as excellent in 10 case, good in 11 cases, poor in 4 cases. Joint necrosis happened in 2 cases and bone malunion in 2 cases. The 4 cases received dead bone debridement and iliac bone graft. No malfunction occurred in the donor site.

CONCLUSIONSOur surgical method is a currently effective way to reconstruct II-III degree thumb defects. Satisfactory functional and cosmetic results can be achieved both in donor site and recipient site.

Aged ; Bone Transplantation ; methods ; China ; Hallux ; Humans ; Ilium ; transplantation ; Necrosis ; etiology ; Postoperative Complications ; pathology ; Reconstructive Surgical Procedures ; methods ; Skin Transplantation ; methods ; Surgical Flaps ; Thumb ; surgery ; Toes

Objective To investigate the effect of umbilical cord serum(UCS)during induction of dendritic cells derived from umbilical cord blood. Methods Umbilical cord blood was collected aseptically and interface cells were collected with density gradient centrifugation method,CD34 +cells were purified and collected with Mini-MACS technique. Pro-DC were obtained and were divided into 3 groups:①cultured in RPMI-1640 medium with 10%UCS and cytokine,②cultured in RPMI-1640 medium with 10%FCS and cytokine③cultured in RPMI-1640 medium with 10%FCS .Interleukin-4(IL-4),granulocyte-macrophage colony-stimulating factor(GM-CSF)and tumor necrosis factor(TNF-a)were used in the first 2 groups, but not in control group (group 3). Some cells were collected on the 8th d for phenotypes analysis. Results The expression of CD80 ,CD54 and HLA-DR on the surface of DC cultured in UCS medium had no significant difference compared with that of DC cultured in FCS medium. The expression of surface molecules in UCS-DC group and FCS-DC group were both enhanced compared with the control group. Conclusion Mature DC could be induced from pro-DC derived from umbilical cord blood when cultured with UCS instead of FCS. That provides a new approach for the clinical application of DC.

Dendritic cells (DC) represent a heterogeneous cell population including many subsets. DC subpopulations with different characteristics and functions have been identified. The liver, as an immunological organ, is important in induction of immune tolerance. The unique anatomical architecture and immune properties of the liver have given DC the ability to maintain liver homeostasis and respond quickly to liver tissue damage. This article reviewed the role of hepatic DC subsets in the maintenance of tissue homeostasis and repair of damaged tissue in the liver.

Teaching reform is the strong requirement of the times and social development.Immunology department inTaishan Medical College integrated teaching and a variety of extra-curricular teaching,broke the constraints of traditional teaching model in time and space,played the leading role of teachers and inspired students' independent learning,thus improving the teaching effectiveness in immunology.

Objective To explore the biological effects of the luteinizing hormone receptor (LHR) and vascular endothelial growth factor (VEGF) on the ovary of mice during peri-implantation. Methods The immunohistochemistry SABC method and image analysis were used to study the distribution and changes of the LHR and VEGF in Kunming mouse( n =28) ovary during estrous,pregnancy of day 1, day 4 and day 6 stage. Results The expression of LHR-immunoreactive substance and that of VEGF-immunoreactive substance had the same distribution and changes. Compared with other groups,the level of LHR-immunoreactive substance and that of VEGF-immunoreactive substance increased highly on the stroma cells around largergrowing follicles in estrous group ( P <0.05). Along with the pregnancy, the positive immunostaining for LHR and VEGF increased gradually on the granulosa lutein cells, and reached the highest level on day 6 of pregnancy. Positive immunostaining for LHR or VEGF on some endothelia and blood cells were observed in day 1 of pregnancy or estrous group respectively. Form day 1 of pregnancy, the theca cells had positive immunostaining for LHR. Conclusion The expression of LHR and VEGF is closely related with the process of follicle growing, ovulation and corpus luteum formation.

ObjectiveTo investigate the semantic induce effects in reading disorder of the Chinese deep dyslexia. MethodsA patient with deep dyslexia was researched with initials inducement (as phonetic inducement), semantic-related words inducement, numeral inducement, quantifier inducement, context inducement and actual object inducement (all as semantic inducement). ResultsThe rate of correct results were more with semantic inducements than with phonetic inducement (91.30%, 76.67%, 94.44%, 83.33% vs 44.44%, P<0.001). ConclusionThe semantic induce training is more effective than the phonetic induce training on Chinese deep dyslexia.

Hydrogel is a creative polymeric biomaterial which can resemble extracellular matrix (ECM) in vitro. Hydrogel is also a material with intrinsic bioinert, but it can offer mechanical support and developmental guide for cell growth and new tissue organization by designing physicochemical and biological properties of hydrogels precisely. This review mainly introduces design of hydrogels, properties and applications in tissue engineering and regenerative medicine, drug delivery, stem cell culture and cell therapy.
Biocompatible Materials ; Cell Culture Techniques ; Extracellular Matrix ; Humans ; Hydrogels ; chemistry ; Regenerative Medicine ; Stem Cells ; Tissue Engineering

Objective To observe the effects of lung stromal cells on differentiation of mature dendritic cells (mDCs) deriving from mouse bone marrow. Methods The mDCs were cultured by complete medium, half of which was from the lung stromal cell cultures. One week later, the mDCs were induced into regulatory dendritic cells (rDCs). The morphological characteristics of rDCs were observed by Giemasa-Wright stain. The content of cytokines (IL-10 and IL-12p70) in the co-culture supernatants was detected by enzyme-linked immunosorbent assay. The expression level of cellular phenotype was tested with fluorescence-activated cell sorting, compared with mDCs. The difference of rDCs and mDCs was observed. Results Compared with mDCs, rDCs secreted higher level of IL-10 (P＜0.01), and lower level of IL-12p70 (P＜0. 01). In cellular phenotype, the expression of CD11b on rDCs increased (P＜0.01), while the expression of CDllc, Ⅰa and CD86 declined (P＜0.01).Conclusions Lung stromal cells microenvironment may induce the mDCs differentiate into a kind of DC with different biological characteristics.

Purpose To explore the relation between the expression of Bmi-1 and cancer stem cells and its relation to chemotherapy re-sistance in breast cancer. Methods MTT method was applied to detect the inhibition effect on proliferation of different concentrations (0. 01, 0. 1, 1, 10 μg/ml) of 5-Fluorouracil (5-FU) to MDA-MB-468 cells with 48 and 72 hours culture, a curve of proliferation in-hibition rate was drawn, and a suitable experiment concentration of 5-FU was chosen. MDA-MB-468 cells was serially passaged under continuous interference with the suitable concentration of 5-FU, 6 generations of cells were collected, cells with 5-FU interference were designed as experiment group and a corresponding control group with no 5-FU was set. RT-PCR and Western blot were employed to ex-amine mRNA and protein expression of Bmi-1 and Sca-1, Oct-4 in the 6 generations of cells of both control group and experiment group. Results Results of the MTT test showed that 5-FU could inhibit the proliferation of human breast cancer cell line MDA-MB-468, the 5-FU concentration of 0. 1 μg/ml was chosen as the suitable experiment concentration. RT-PCR tests showed that the differ-ences between the relative mRNA expression values of Bmi-1 and Sca-1, Oct-4 in the 6 generations of MDA-MB-468 cells were not sta-tistically significant in control group (all P>0. 05) and that the differences between the relative mRNA expression values of Bmi-1 and Sca-1, Oct-4 in the 6 generations of MDA-MB-468 cells were of statistical significance in experiment group cells (all P<0. 05). The mRNA expression of Bmi-1, Sca-1 and Oct-4 showed the following tendency in the 6 generations of passaged cells:decrease (1st gen-eration)—increase (2nd generation)—continuous increase (3rd generation)—decrease (4th generation)—increase (5th genera-tion)—decrease (6th generation). Western blot tests indicated that the differences between the relative protein expression values of Bmi-1 and Sca-1, Oct-4 in the 6 generations of MDA-MB-468 cells were not statistically significant in control group and that the differ-ences between the relative protein expression values of Bmi-1 and Sca-1, Oct-4 in the 6 generations of MDA-MB-468 cells were of sta-tistical significance in experiment group cells (all P<0. 05). The expression of Bmi-1 was positively correlated with stem cell associat-ed factors Sca-1, Oct-4 (r=1, all P<0. 01). Conclusions The expression of Bmi-1 gene is positively correlated with expression of stem cell associated factors Sca-1 and Oct-4 in breast cancer cell line MDA-MB-468 cell, and Bmi-1 may be a novel marker for cancer stem cells in breast cancer. Administration of 5-FU can affect the expression level of Bmi-1 and the ration of cancer stem cells in breast cancer cell line MDA-MB-468. Bmi-1 gene may be associated with drug resistance to chemotherapy and recurrence in breast cancer.

This paper illustrates the immunology teaching reform of higher medical education to meet demands of the 21st century. The teaching reform includes cultivating students’humanities quality,scientific consciousness,ability to research and the following-up of immunology progress. According to the teaching practice and the results from the questionnaire,the new teaching model is better than traditional teaching model and is approved by the students.