The cell adhesion molecule CD44 antigen correlates with the antineoplastic agents resistance of breast neoplasms closely. Its high expression can enhance the invasion of the breast neoplasms. CD44 mole-cule can affect the expression of the TGF-β of breast neoplasm cells to induce the resistance to tamoxifen. The influence on erbB-2 cell signal pathway result in the resistance to the trastuzumab. CD44 can strengthen the re-sistance to anthracene nucleus by inducing expression of protein MRP2 and inhibiting the topoismerase. The modulation of survivn and multidrug resistance gene intensifies the resistance to paclitaxel.

Objective To discuss the clinical efficacy of comprehensive therapy in children with amblyopia.Methods A total of 137 eyes of 87 children were observed.They were given glasses,cover,fine training on the basics of their corrected visual acuity after mydriasis with atropine and optometry.According to amblyopic type,all subjects were divided into three groups,ametropic amblyopia group (96 eyes),anisometropic amblyopia group (28 eyes) and strabismic amblyopia group(13 eyes).According to treatment-starting age,they were divided into 3-6 years old group (95 eyes),7-9 years old group (25 eyes),and 10-12 years old group (17 eyes).According to amblyopic degree,they were divided into mild group(61 eyes),medium group (60 eyes) and serious group (16 eyes).According to fixation nature,they were divided into central fixation group (93 eyes),paracentral fixation group (44 eyes).Results All of subjects' eyes,87 eyes (63.50％,87/137) were basically cured,40 eyes (29.20％,40/137) were improved,and 10 eyes (7.30％,10/137) were unimproved.The total effect rate was 92.70％ (127/137).The efficacy of treatment was closely related to amblyopic type,treatment-starting age,amblyopic degree and fixation nature.Efficacy of the treatment on anisometropic amblyopia was the highest among all three types.The younger the treatment-starting age,the better the efficacy of the treatment.There was a positive correlation between the mildness of amblyopia and the efficacy of the treatment.Efficacy of central fixation group was better than that of paracentral fixation group.Differences between efficacies of treatment on each group were significant (P ＜ 0.01).Conclusion Comprehensive therapy in children with amblyopia can achieve satisfactory effects.

BACKGROUND:A large number of studies have verified that propofol could effectively reduce secondary nerve injury by improving microenvironment of spinal cord injury. OBJECTIVE: To study the effects of propofol on spinal cord edema and electrophysiology of the hind limb in rats with spinal cord injury. METHODS: Rat models of acute spinal cord injury were established by using the modified Alen method. A total of 40 rat models were randomly divided into spinal cord injury group and propofol group (n=20). Rats in the propofol group were injected with propofol through the caudal vein. The spinal cords of an additional 20 rats were exposed in the sham surgery group. Motor function was evaluated using BBB score and inclined plate test before modeling, 1, 3 days, 1-4 weeks after modeling. Neuronal apoptosis was detected after spinal cord injury using TUNEL assay at 72 hours after modeling. AQP4/9, matrix metaloproteinases 9/2 mRNA and protein expressions were measured using RT-PCR and western blot assay. At 4 weeks after modeling, pathological changes of the spinal cord were observed using immunohistochemistry and hematoxylin-eosin staining. Neurophysiological recovery was analyzed using motor evoked potentials and somatosensory evoked potentials. RESULTS AND CONCLUSION: (1) At 1-4 weeks after modeling, BBB score and inclined plate test score were higher in the propofol group than in the spinal cord injury group (P < 0.05), but lower than in the sham surgery group (P < 0.05). (2) The number of apoptotic cels was significantly more in the spinal cord injury group than in the propofol group (P < 0.05). No apoptotic cels were found in the sham surgery group. (3) At 72 hours after spinal cord injury, AQP4/9 and matrix metaloproteinases 9/2 mRNA and protein expression was higher in the propofol group than in the sham surgery group (P < 0.05). AQP4/9 and matrix metaloproteinases 9/2 mRNA and protein expression was significantly reduced in the propofol group (P < 0.05). (4) At 4 weeks after modeling, the spinal cord was loose, and the cavity was smal. Partial neuronal necrosis could be seen. The degree of nerve fiber density in the propofol group was between the sham surgery group and spinal cord injury group. (5) Motor evoked potentials and somatosensory evoked potentials were obviously recovered, the latency was short, amplitude was increased in the propofol group, which showed significant differences as compared with the sham surgery group and the spinal cord injury group (P< 0.05). Results suggested that propofol can reduce apoptosis in rat neurons after spinal cord injury, reduce spinal cord edema-related gene expression, and improve electrophysiological function and limb motor function.

BACKGROUND:Bone marrow mesenchymal stem cels can be used to repair neurons, but have no ideal outcomes on nervous system injuries. OBJECTIVE:To investigate the effects of bone marrow mesenchymal stem cel transplantation combined with propofol on the hind limb function and electrophysiological changes of rats with spinal cord injury. METHODS:Eighty adult Wistar rats were selected to make animal models of spinal cord injury, and then randomized into four groups (n=20): bone marrow mesenchymal stem cel group, control group, combination group, propofol group. At 6 hours after modeling, rats in these four groups were injectedvia the tail vein with bone marrow mesenchymal stem cel suspension, cel culture medium, bone marrow mesenchymal stem cel suspension+propofol solution, and propofol solution using a 1 mL syringe, respectively. Rat motor function was assessed by Basso Beattie Bresnahan score, modified Tarlov score and inclined plane test before and at 1 day, 3 days, 1-4 weeks after modeling. Under fluorescence microscope, the survival and distribution of PKH-26-labeled bone marrow mesenchymal stem cels were observed at 4 weeks after modeling, and meanwhile, hematoxylin-eosin staining was used for pathological observation. Horseradish peroxidase tracer analysis was performed to analyze regeneration of nerve fibers, and motor and somatosensory evoked potentials were used to analyze the neurophysiological recovery of rats. RESULTS AND CONCLUSION:(1) The motor function of the rat hind limb recovered best in the combination group, better in the bone marrow mesenchymal stem cel group and propofol group, but worse in the control group. (2) There were a smal amount of nerve axon-like structures and smal syringomyelia in the bone marrow mesenchymal stem cel group and propofol group, but the combination group had more axon-like structures and no syringomyelia. In the control group, no axons but spinal cord defects and syringomyelia formed. (3) The amount of horseradish peroxidase-positive nerve fibers and the number of PKH-26 positive cels were ranked as folows: control group < propofol group and bone marrow mesenchymal stem cel group < combination group. There were significant differences between the groups (P < 0.05). (4) The latencies of motor and somatosensory evoked potentials were ranked as folows: control group> propofol group and bone marrow mesenchymal stem cel group > combination group, and there were significant differences between the groups (P < 0.05). (5) Amplitudes of motor and somatosensory evoked potentials were arranged as folows: control group < propofol group and bone marrow mesenchymal stem cel group < combination group, and the differences were statisticaly significant (P < 0.05). These findings indicate that both propofol and bone marrow mesenchymal stem cels can promote synaptic regeneration and improve the electrophysiological function and motor function of rats with spinal cord injury. Their combination has a better role than propofol and bone marrow mesenchymal stem cels used alone.

Objective To investigate imaging features and clinical characteristics of the small coronary-bronchial artery fistula (CBF). Methods By retrospective analysis of image data from May 2007 to November 2011 for coronary angiography in 30 284 patients without chronic lung or pulmonary vascular disease patients, 13 cases of small CBF (diameter of the end of fistula near coronary artery< 2 mm) were detected. Incidence of CBF was counted, its morphology was described, and its clinical features were preliminarily analyzed and summarized. Independent sample t test and χ2 test were used to compare diameters and incidences of CBF originatng from left and right coronary arteries. Results In this study primary CBF detection rate was 0.043%(13/30 284). The ends of CBFs near coronary arteries were slender and their diameter average was (1.57 ± 0.75) mm. In this study all of the CBF were from the right coronary artery and left circumflex coronary artery, finding no cases starting from the left anterior descending coronary artery. There was no significant difference between incidence of CBFs originating from the right coronary artery and left circumflex coronary artery coronary and the diameters of CBFs. In 13 cases of CBF, 9 cases of myocardial ischemic symptoms were caused by coronary artery stenosis, which was proven by angiography;Four cases without myocardial ischemic symptoms or with very atypical symptoms were finally diagnosed as cardiac neurosis. After branching, the CBF diameters of these coronary arteries were seen no evindently reduced, which suggested that the coronary bypass had less blood flow, and therefore had no significant hemodynamic significance. Conclusions Congenital CBF can exist in populations without chronic lung or pulmonary vascular disease. The main image features are that their diametes were small and all originate from the right coronary artery and left circumflex coronary artery. The most fundamental clinical features are that there're no symptoms of myocardial ischemia due to coronary artery steal and no obviously hemodynamic significance. It is important to well recognize this type of CBF for enriching radiographic knowledge, identifying various anatomic variations, and carrying out clinical diagnosis and treatment.

Malignant tumor is a serious threat to human health and its pathogenesis is complex , which caused by interaction of a variety of carcinogenic factors in the human body .SALL4 gene is a kind of newly dis-covered gene and it plays an important role in function of embryonic stem cell due to its protein transcription fac -tor with C2H2 zinc finger domain.Studies found that this gene mutation often results in occurrence of malignant tumor.This paper will summarize the molecular mechanism of SALL 4 in the occurrence and development of malig-nant tumor and its diagnosis and treatment on malignant tumor .

OBJECTIVE:To investigate the role of clinical pharmacists in the therapy for patient with pulmonary aspergillosis complicated with rhabdomyolysis(RM). METHODS:Clinical pharmacists participated in the therapy for RM patients with pulmo-nary aspergillosis,and assisted physicians to optimize and improve therapy plan from RM therapy,anti-infection and liver protec-tion:stop taking Bicyclol tablet,continue Micafungin for injection 50 mg,ivgtt,qd for anti-infection;suspend liver-protective drug Compound glycyrrhizin;closely monitor therapeutic efficacy and ADR. RESULTS:Physicians adopted the suggestions of clini-cal pharmacists,and the situation of RM were improved. The patient were discharged from hospital 24 d later. CONCLUSIONS:Clinical pharmacists participate in therapy for RM patient with pulmonary aspergillosis and assist physicians to improve therapy plan,which contribute to rational drug use and the safety of drug use.

Diabetic foot is one of the most common and serious complications of diabetes. Early detection and prompt treatment is of great significance to the prevention of diabetic foot. Imaging is the most convenient and effective method for making an early diagnosis of diabetic foot, and imaging examination can directly and accurately reveal the peripheral vascular disorders, peripheral neuropathy, soft tissue complications, muscle and tendon lesions, bone complications, etc. thus the lesion’s extent can be exactly evaluated, which provides reliable basis for the selection and evaluation of the clinical therapeutic scheme. This paper aims to make a general review about the recent imaging research progress in diabetic foot.

BACKGROUND: It has been found that hypoxia inducible 1α (HIF1α) gene can improve the ability of tissues and cells to survive in the ischemic environment, which is of great significance in promoting blood vessel regeneration.OBJECTIVE: To investigate the effect of the recombinant adenovirus Ad-CMV-HIF1αmu-IRES-hrGFP-1 on the proliferation of bone marrow mesenchymal stem cells.METHODS: Passage 3 bone marrow mesenchymal stem cells were cultured and transfected with Ad-CMV-HIF1αmu-IRES-hrGFP-1 virus (experimental group), with non-mutated gene Ad-CMV-HIF1α-IRES-hrGFP (positive control group), with Ad-CMV-IRES-hrGFP-1 empty virus (negative control group), or with no virus solution (blank control group). After transfection for 24 hours, the expression of HIF1α mRNA and protein was detected. Cell proliferation was detected by MTT assay at 24, 48, 72, 96 and 120 hours after transfection.RESULTS AND CONCLUSION: (1) Except that the mRNA expression of HIF1α in the experimental group and the positive control group was significantly higher than that in the negative control group and the blank control group (P < 0.05), there was no significant difference between two groups. (2) The expression of HIF1α protein in the experimental group was significantly higher than that in the positive control group, the negative control group and the blank control group (P < 0.05), and there was no significant difference between the latter three groups. (3) Cell proliferation was faster in the experimental group than the positive control group and the blank control group (P < 0.05), and moreover, there was no significant difference between the latter two groups. Our experimental findings indicate that the recombinant adenovirus-mediated three-point mutant HIF1α combined with hrGFP gene transfected bone marrow mesenchymal stem cells could not only express the target protein, HIF1α, under normoxic conditions, but also promote the proliferation of bone marrow mesenchymal stem cells.