IL-8 is a cytokine which belongs to the chemotactic superfamily.It is one of the major mediators in the inflammatory response.In recent years,it was found that it had multiple functions,such as chemoattractant,potent angiogenic,and so on.The cytokine is believed to play an important role in the pathogenesis of inflammation,tumor progress and immune disease.In this review,the properties of IL-8 and highlight its roles on inflammation and tumor progress were surveied.

Independent component analysis (ICA) aims at decomposing an observed random vector into statistically independent variables. Fast independent component analysis (FastICA) algorithm and its variants are catching more attention because of their simplicity and convergence speed. In this paper, a novel method referred to robust independent component analysis (RobustICA), based on normalized kurtosis and optimal step-size, is analyzed in detail. When applied to fetal electrocardiogram (FECG) extraction and compared with FastICA, it gave decent results and showed prosperous future usages.
Algorithms ; Electrocardiography ; Female ; Fetal Heart ; physiology ; Fetal Monitoring ; Fetus ; Humans ; Pregnancy ; Principal Component Analysis ; Signal Processing, Computer-Assisted

Suture was a traditional method for tissue repair. However, sutures used in the closure of surgical wounds can induce inflammation and lead to scarring that appears as crosshatch marks. Threads used for sutures may cause immune response and surgical infection. In this review, we introduce a novel sutureless technique for wound repair, called photochemical tissue bonding (PTB). Absorption of visible light by a photosensitizing dye initiates photochemical reactions leading to covalent protein-protein crosslinks that bridge the wound surfaces, thus producing an immediate seal between the wound surfaces. This technique has been applied in various tissues including skin, cornea, nerve, blood vessels, et al. PTB reduces inflammation resulting in less scarring in skin. PTB dramatically improves the incidences of vascular anastomotic leakage and stricture. In addition, PTB enhances the recovery of nerve function after nerve repair.

OBJECTIVE: To understand the research on the development and application of non-fusion inter-spinous stabilization devices.DATA SOURCES: Using the key terms of "inter-spinous and low back pain", relevant articles on non-fusion inter-spinous stabilization devices and low back pain in English were retrieved from Medline between January 1966 and October 2004 and the Ovid database between January 2003 and June 2007.STUDY SELECTION: Titles and most abstracts of all articles on the types of non-fusion inter-spinous stabilization devices and action mechanisms of non-fusion inter-spinous stabilization devices were selected. Duplicated researches and meta analytic papers were excluded.DATA EXTRACTION: A total of 351 articles met the inclusion criteria and 322 were excluded. Among them, 29 papers were analyzed. The major exclusion factor was duplicate studies.DATA SYNTHESIS: Non-fusion inter-spinous stabilization devices can improve mechanism of low back pain and cause certain effects on the biodynamic environment of degenerative lumbar vertebrae, such as relieving loading of the posterior border of the anulus fibrosus of the intervertebral disc and opening the intervertebral foramen. At present,non-fusion inter-spinous stabilization devices, such as X-STOP, Wallis and DLAM, have been tested for a long time;therefore, the effects of their effectiveness, utility and risk of complications will be proved by clinical experiments as soon as possible.CONCLUSION: Non-fusion inter-spinous stabilization devices have good effects on the treatment of degenerative low back pain originating in the anulus fibrosus of the intervertebral disc and can reduce complications caused by the fusion technique.

Diabetic peripheral neuropathy(DPN)is the most common complications of DM.It is considered to be progressive and irreversible.DPN occurred in a stocking and glove distribution,the mainly symptoms are pain,numbness and paresthesias.It is also the main cause of ulceration,infection and amputation.Usually,there is no special treatment for DPN besides blood-glucose control and pain control.Recently,Surgical decompression of peripheral nerves is used to restore sensation and relieve pian among DPN patients by Prof.Dellon and other doctors who have proved its efficacy in treatment of DPN.

BACKGROUND: Bone marrow mesenchymal stem cells (BMSCs) possess the potential in multi-directional differentiation and can differentiate into cardiomyocytes, which had self-discipline jumpiness. There are few reports on intravenous transplantation or autologous mobilization of BMSCs for treating dilated cardiomyopathy-induced heart failure. OBJECTIVE: To study the effect of BMSC intravenous transplantation combined with bone marrow stem cell autologous mobilization on cardiac function in rats with cardiomyopathy-induced heart failure. DESIGN, TIME AND SETTING: This control experiment was conducted at the National Physiological Laboratory, Molecule Laboratory, Animal Experimental Center and Central Laboratory of Shanxi Medical University from January 10th, 2007 to January 10 th, 2008. MATERIALS: Five Wistar rats served as BMSC donor. Fifty rat models of cardiomyopathy-induced heart failure were created by intraperitoneally injected with 15 mg/kg adriamycin for six weeks. Recombinant human granulocyte stimulating factor (GSF) was bought from Qilu Pharmacy Co., Ltd. CD44, CD34 and CD45 were given by Flow Cytometric Analysis Laboratory, Experimental Center, Shanxi Medical University. METHODS: BMSCs were isolated, purified and cultured in vitro. Surface marker CD45, CDD44 and CD34 were detected with f1ow cytometer. Wistar rat models were randomized into 4 groups. BMSCs and recombinant human GSF (50 ?g/kg) were injected into models by tail vein and hypodermoclysis infusion respectively in the combination treatment group (MG group). Recombinant human GSF (50 ?g/kg) was subcutaneously injected into models in the bone marrow stem cell autologous mobilization group (G group). BMSCs were injected into rat models by tail vein in the BMSC group. Rat models in the heart failure group were intact. MAIN OUTCOME MEASURES: ①Peripheral blood leukocyte and mononuclear cell counts and CD34 expression were obtained before treatment and 6 days after treatment. ②At 4 weeks, cardiac function parameters were evaluated by echocardiography and hemodynamic measurement. RESULTS: Compared with that before treatment, peripheral blood leukocyte and mononuclear cell counts significantly increased in the MG group and G group at day 6 (P

0.05). Conclusion The movement of train has not obviously affect to the routine blood test.

Based on the development of clinical radiobiology and combined with teaching practice for recent years,we have preliminarily surveyed the teaching reform about this curriculum and proposed some advices about the clinical radiobiology teaching reform.

OCT angiography (OCTA) is a non-invasive imaging technique for detecting blood flow information of the retina and choroid.Dye injection is not needed with OCTA,which is different from fundus fluorescein angiography (FFA) and indocyanine green angiography (ICGA).OCTA is able to observe blood flow in different retinal and choroidal segmentation slab.This revolutionary breakthrough in OCTA algorithm provides more and more accurate blood flow informations in the diagnosis of ocular vessel diseases and the study on pathogenesis of some vessel-related eye diseases.However,like other biometric technology,OCTA has its limitations and shortcomings,for example,OCTA presents a smaller observational area than FFA and ICGA,and some factors affect the imaging quality and cause misdiagnosis during the examination and reading image.Fully understanding the principle of OCTA and its image features are helpful for eye doctors to better interpret the blood flow changes of retinal diseases,choroidal diseases,glaucoma and neuro-ophthalmic diseases.Ophthalmologists should correctly apply this imaging tool for a better monitoring and following up of these diseases.

Objective To evaluate the clinical value of endoscopic ultrasonography (EUS) in diagnosis and treatment of rectal carcinoid tumom, and the safety and efficacy of endoscopic submucosal dissection (ESD) for rectal carcinoid tumors. Methods All the submucous tumor considered rectal carcinoid tumor received EUS examination and according to the result to select appropriate therapeutic regimen. Results All the 45 lesions were verified rectal carcinoid tumors by pathological examination. 42 patients received endoscopic submucosal dissection. Two tumors invaded into the muscularis propria and one tumor invaded beyond serosa and with lymph node metastasis received surgical strategy. Conclusion EUS can be used to determine surgical strategy for rectal carcinoid tumor for it provides precise information of the size, depth, border, muscularis propria or vessel infiltration of the tumor. For rectal carcinoid tumors smaller than 20 mm in diameter, ESD is safe and effective.