Thyroid carcinoma is one of the most common diseases in the head and neck area. With the advance of innovative technologies like ultrasound ,fine-needle aspiration and PET-CT, the number of patients diagnosed as thyroid carcinoma has grow rapidly during the past ten years. As a special structure in papillary tumors and appearing as microcalcification in the imaging examination, psammoma body has been considered of great significance in the diagnosis of thyroid carcinoma. Psammoma body has unique features in terms of pathology, cytology and imageology.The study of the mechanism of psammoma body formation is very important for the clinic to differentiate the disease from others. In this article, we summarized the role of psammoma body in the study of thyroid cancer.

Incidence of dilated cardiomyopathy of children is increasing in recent years. But, the pathogenesis remains obscure. Genetic factor. viral infection, autoimmunity and apoptosis may play some important roles in the pathogenesis of dilated cardiomyopathy. We will summarize the progress in pathogenesis of dilated cardiomyopathy of children.

Immune RNA (iRNA) preparation was extracted with phenol from the spleens, lymph nodes and livers of rabbits immunized with Japanese Encephalitis virus (JEV). When C57BL mice were injected intraperitoneally with this preparation, the serum antibodies were detected by complement fixation test, indirect immunofluorescence technique and neutralization test. A markedly higher of ser fjter um antibody was demonstrated by all these three methods in such iRNA treated mice as compared with non-immunized or nRNA treated mice. There is no significant difference between spleen-lymph nodes iRNA and liver iRNA in their antibody induction activities. The titer of serum antibody was greatly increased by a previous injection of a sub-threshold amount of JEV vaccine into mice which subsequently received an injection with iRNA. Adoptive transfer of spleen cells which had previously sensitized with iRNA into mice had the same effect on antibody formation as direct injection of iRNA.

Papers on mycorrhizas were searched from SCI (Science Citation Index) database. In order to understand the research progress of mycorrhizas in China, the paper on mycorrhizas from 1989 to 2007 was analyzed with method of bibliometrics. Mycorrhizal researches showed an increasing tendency during 1989 to 2007, while the increase was obviously accelerated after 2000. Only 5.22% of the articles were published in journals with impact factor above 5, indicates that the academic levels of researches need being enhanced. Currently the research on mycorrhizas was mainly focused on Arbuscular mycorrhiza (AM), especially on effects of mycorrhizal fungi on plant physiology, effects of mycorrhizal fungi on resistance of host plants, Mycorrhizal diversity community and ecological distribution, and phytoremediation with Mycorrhizal plants. The future research should emphasize in phytoremediation with Mycorrhizal plants and identification of fungal species with molecular biological technology.

Objective To explore the clinical effiicacy and effect on cytokines of invigorating the kidney and activating blood fomula on treating osteoarthritis patients in the pattern of kidney deficiency. Methods 113 patients with knee osteoarthritis were randomly divided into two groups including 56 cases of treatment group and 57 cases of control group, which were treated by invigorating the kidney and activating blood fomula and combinaton of Celecoxib and Glucosamine respectively. The clinical effiicacy of two groups were investigated by Womac osteoarthritis index and the average severity of OA index. The changes of serum inflammatory cytokines TNF-? and IL-6 were detected by ELISA. Results The total efficiency of the treatment group was 89.3% and better than the control group (P 0.05) compared with control group. The serum TNF-?, IL-6 levels of treatment group significantly decreased after treatment in treatment group (P

Purpose:To investigate p53 gene mutation, CD44V6 expression and their relationship with metastasis of ovarian carcinoma in tumor diagnosis. Methods:PCR SSCP with silver staining was used to detect the mutation of p53 gene; by using Southern blot and image analysis, the quantitative and qualitative expression of CD44V6 were also determined. Results:The positive percentage of CD44V6 expression and p53 gene mutation was not detectable in any of the normal ovarian specimens but in the benign tumors, non metastasizing and metastasizing carcinomas it was 10%, 75%, 88% and 5%, 40%, 60% respectively. The mean dark density of each band in these four groups(mentioned above) was 85.25?23.16, 817.11?126.5, 3820.14?289.43 and 10132.92?1521.20 respectively. The expression of CD44V6 of metastasizing carcinomas was higher than that of non metastasizing group. Conclusions:The expression of CD44V6 is related to tumor metastasis; the positive percentage of CD44V6 is higher than that of p53 gene mutation in the group of metastasizing and non metastasizing tumors; Compared to p53 gene mutation, CD44V6 is a better marker for tumor metastasis.

Objective To investigate to the role of Angelica sinensis polysaccharides (ASP) against hepatic encephalopathy and explore the probable mechanism. Methods Sprague-Dawley rats were established into carbon tetrachloride (CCl4)-induced liver cirrhosis,then treated with distilled water (negative control),lactulose (positive control),ASP solution (10,20 and 40 g/L respectively,intragastrically at dose of 10 ml.kg-1.d-1) for 14 days. On 15th day,all the survival rats were intraperitoneally injected with endotoxin (3 mg/kg) once,then in the following 12 h,the rats that fall into coma were counted and the time period of coma was recorded. The blood plasma concentrations of ammonia,serum glutamate-pyruvate transaminase (GPT) and glutamic oxaloacetic transaminase (GOT) were determined. The apoptotic cerebral cells were dyed in situ by TUNEL. Glial fibrillary acidic protein (GFAP) in astrocytes was determined by immunohistochemical method. Then we counted the apoptotic cerebral cells and GFAP positive cells under light microscope. Results The survival rats in distilled water group were highest in the concentrations of ammonia,GPT and GOT,the amount of apoptotic cerebral cells,and coma rate than the rats in other groups. The rats in 40 g/L ASP group had the higher ammonia level,GOT concentration,coma rate than those in lactulose group. The rats in 3 ASP groups all had less apoptotic cerebral cells than those in lactulose group. As to GFAP,distilled water group had the lowest immunological activity,and the GFAP immunological positive cells of 3 ASP groups were all more than those in lactulose group. Conclusion ASP,even more effective than lactulose,can protect rat brain function and delay the occurrence of hepatic encephalopathy,whose effects may be related to the decrease of blood ammonia,the amelioration of liver function as well as the protection of astrocyte function and neuronic activity.

Adenocarcinoma ; complications ; metabolism ; pathology ; Adult ; Carcinoembryonic Antigen ; metabolism ; Diagnosis, Differential ; Female ; Humans ; Immunohistochemistry ; Ki-67 Antigen ; metabolism ; Ovarian Neoplasms ; complications ; metabolism ; pathology ; Peutz-Jeghers Syndrome ; complications ; metabolism ; pathology ; Proliferating Cell Nuclear Antigen ; metabolism ; Sex Cord-Gonadal Stromal Tumors ; complications ; metabolism ; pathology ; Uterine Cervical Neoplasms ; complications ; metabolism ; pathology

OBJECTIVE: To develop a sensitive and specific reverse-phase high-performance liquid chromatography (RP-HPLC) method to determine propofol in follicular fluid. METHODS: Thymol was added into follicular fluid samples as the internal standard, and the samples were then precipitated with methanol. After centrifugation at 20000 r·min-1 for 15 min, 20 μL of supernatant was directly injected into an Agilent Extend-C18 column (4.6 mm×250 mm, 5 μm). The mobile phase was composed of methanol-water (77:23). Analysis was run at a flow rate of 1.0 mL ·min-1. Fluorescence detection was applied with excitation and emission wavelengths of 276 and 310 nm, respectively. RESULTS: The calibration curves had good linearity in the range of 0.108-5.4 mg·L-1. The linear regression equation was A=0.2074ρ-0.0012(r=0.9993). The limits of detection and quantity proved to be 54 and 108 μg·L-1, respectively. The method recoveries for low, intermediate and high concentrations were 117.9%, 101.7% and 99.4%, respectively. The RSDs of inter-day assay were 4.10%, 1.28% and 0.20%(n=5), and intra-day assay were 4.34%, 2.33% and 0.61%(n=5), respectively. CONCLUSION: The method is accurate and convenient. It can be used to determine propofol for studying its clinical pharmacokinetics.

Objective To evaluate cerebral autoregulation in cerebral vascular disease using transeranial Doppler(TCD)-CO_2 test and head-upright tilt test(HUTT).Methods Thirty-two patients with occlusive cerebral vascular disease (group A),28 cerebral infarction patients without stenosis (group B), and 26 controls were included.Cerebrovascular reactivity was calculated in terms of the breath-holding index (BHI) and vascular motor reactivity (VMR) by TCD-CO_2 test.Changes of cerebral blood flow velocity (CBFV),blood pressure (BP) and heart rate (HR) were detected during HUTT to assess the cerebral pressure-autoregulation.Results Compared with controls,VMR decreased in group A and B,being 0.18?0.02,0.26?0.04 respectively,and so did BHI,being 0.76?0.15,1.05?0.15 respectively with significance(P