BACKGROUND: Microsurgical operation might fail due to trauma-induced hypercoagulability.OBJECTIVE: To observe the changes of polymerization of fibrin monomer after the treatment of trauma so as to explore an effective means for assisting the prediction of post-traumatic hypercoagulability and thrombosis.DESIGN: Case-control observation and self-control study.SETTING: Institute of Thrombus and Hemostasis, the Union Hospital affiliated to Tongji Medical College of Huazhong University of Science and Technology.PARTICIPANTS: Totally 34 traumatic patients were included from those who were admitted to the Union Hospital affiliated to Tongji Medical College, Huazhong University of Science and Technology, between May 2001 and January 2002. There were 18 males and 16 females aged 8-65 years old. Another 96 healthy people, 50 males and 46 females aged 21-68 years old, who came for routine physical examination were enrolled as normal controls. The history of coagulation impairment, and general and coagulation-related diseases were excluded in all the subjects.METHODS: Polymerization of plasmic fibrin monomer was detected. Fibrinogen would transform into fibrin monomers and display polymerization induced by acutobin. The accompanied changes of the turbidity were dynamically monitored using spectrophotometer at 340 nm; the obtained electrical signals were then input into the computer for statistical analysis. Venous blood samples were collected from traumatic patients immediately after hospitalization and on the 3rd day after the treatment with clinical debridement, surgery, sutures, liquid supplement and administration of antibiotics to determine polymerization of fibrin monomer. MAIN OUTCOME MEASURES: ① The rate of polymerization of fibrin monomer (taken as the comprehensive predictor for the concentration and function of plasmic fibrinogens). ② Maximum absorbency (reflecting the amount of coagulable plasmic fibrinogen in blood specimen). ③ The ratio between the rate of polymerization of fibrin monomer and maximum ab sorbency (reflecting the polymerization of plasmic fibrinogen molecules). RESULTS: All participants completed the corresponding examinations and were brought into data analysis. ① In traumatic group, the rate of fibrin monomer polymerization, the content of fibrinogen, the ratio of polymerization rate to maximum absorbency were all significantly higher than those in normal control group [traumatic group: 0.87±0.31, (5.81±3.22) g/L,4.61±0.97; normal control group: 0.61±0.15, (3.36±1.02) g/L, 3.93±0.68,P ＜ 0.01]. ② At treatment of 3 days, although the rate of polymerization and the content of fibrinogen were found slightly declined, they were still higher than those in normal group [3.93±0.68, (4.21±1.93) g/L]; however,the ratio of polymerization rate to maximum absorbency did not change after treatment (4.68± 1.19).CONCLUSION: The content and function of fibrinogen would increase in traumatic patients. Traumatic patients display hypercoagulability characteristics and have thrombosis tendency. Determining the polymerization of fibrin monomer can be taken as an effective means for assisting the prediction of posttraumatic hypercoagulability and thrombosis.

Aging is a biological process and state characterized by morphological change, hypofunction and metabolic disorder, often accompanied by severe degenerative diseases, including amyotrophy, atherosclerosis, neurodegeneration, and so on. Age-related diseases not only decrease the life quality of the elderly, but also impose great burden on family and society. As population aging, we are increasingly coming to realize that the longevity we want should be healthy aging but not simple increase of lifespan. By researching on the yeast, C. elegans, drosophila, mice and humans, we get to know the mechanisms of aging and methods for anti-aging, such as dietary restriction and use of anti-aging drugs like rapamycin. In this review, we summarized mainly the studies on mechanisms of aging and elaborate associated anti-aging strategies and underlying mechanisms.

Once uveal melanoma (UM) has distant metastasis, the median survival time of the patient is less than 12 months. There is currently a lack of standard treatment for metastatic UM. In recent years, immunotherapy is splendid in the field of oncology. Immune checkpoint therapy, cancer vaccine therapy and T cell adoptive therapy have been applied to UM therapy. However, most of the clinical effects are limited and the survival benefit is not high. The recent early research results of the new immunotherapeutic drug IMCgp100 are encouraging.

Objective To explore clinical significance of subtemporal decompression in traumatic total anterior circulation infarcts(TTACI).Methods 24 TTACI cases accepted subtemporal decompression were analyzed including CT scan feature, pre operative observation to temporal superficial artery, operative cranial pressure classification and blood circulation in cortical small artery.Results Clinical symptom compared between before and after operation: good 4 cases, unchanged 14 cases, dead 6 cases. CT scan showed infarct areas became smaller in 4 cases, unchanged in 9 cases, larger in 2 cases three months after operation.Conclusion Subtemporal decompression cannot reduce the areas of infarcts and mortality, nor improve neurological function and promote quality of survivor.

Objective To evaluate the effects of micro-screw on the intrusion of lower incisors and the leveling of curve of Spee in the process of orthotherapy.Methods Fifteen patients (5 males,10 females) with deep-bite were selected,aged from 11.3 to 28.8 years,with average of 17.2 years.All of them were Angle Class Ⅱ Classification 1 malocclusion and had a curve of Spee larger than 3 mm.Orthotherapy of extraction was adopted for the first premolars of two upper mandible and second premolars of two lower mandible.All these patients had micro-screws implanted at root apex area between lower lateral incisor and canine bilaterally,and when the 0.457 mm× 0.635 mm (0.018 in ×0.025 in) Ni-Tisquare wire was internalized,the strength of intrusion from micro-screws was used.Lateral cephalometric radiographs were taken before loading the micro-screw and immediately when the curve of Spee was leveled.Two linear and two angular measurements were selected for cephalometric analysis.Results The following results were noted: the lower incisors were significantly intruded for a mean of (4.10±0.98) mm; the mandibular molars were not significantly extruded for a mean of (0.91±0.69) mm; some lower incisors proclined and some lower incisors retroclined for a mean of (-0.09±4.12)°.After bite opening,the mandibular plane angle was minimally altered for a mean of (0.25±0.70)°; the ratio of lower incisor intrusioin to lower molar extrusion was 4.5: 1.0.Conclusions The combined use of micro screw with Ni-Ti wire is capable of enhancing the intrusion of lower incisors and leveling the curve of Spee,and it has minimal side effects on the posterior teeth.

BACKGROUND: The elevation of plasma fibrinogen(Fbg) is a key risk factor of cerebrovascular diseases. The evaluation of the monomer polymerization function of fibrin has even more important clinical merit than the detection of Fbg level.OBJECTIVE: To investigate the clinical significance of the monomer polymerization function of fibrin in patients with isehemie cerebrovascular diseases and its impacts on rehabilitative intervention.DESIGN: A case control study employing patients and healthy individual as subjects.SETTING: An Institute of Hematology and Department of Neurology of one university.PARTICIPANTS: Totally 110 patients with different ischemic cerebrovascular disease selected from the Department of Neurology, Union Hospital of Tongji Medical College, Huazhong Science and Technology University from September 2001 to March 2002, and 50 healthy individuals were included in the study.METHODS: Rehabilitative intervention was performed in 31 randomly selected cerebral infarct patients, and the parameters indicating the monomer polymerization functions of fibrin in the plasma were detected by the measurement system for the monomer polymerization function of fibrin.MAIN OUTCOME MEASURES: Abnormal condition of monomer polymerization function of fibrin in each parameter.RESULTS: Each parameter indicating the monomer polymerization functions of fibrin in plasma was significantly increased in ischemic cerebrovascular diseases patients than healthy individuals( P ＜ 0.01 ) . The abnormal rate of Fbg leveland fibrin monomer polymerization velocity (FMPV) was significantly elevated in ischemic cerebrovascular disease patients than healthy individuals ( P ＜ 0. 01 ) . The relative risk(RR) of ischemic cerebrovascular diseases in patients with abnormal FMP functions was 4 to 31 times more than healthy control group. In cerebral infarct group, FMPV of anterior circulation infarct subgroup was significantly elevated than that of posterior circulation infarct and lacunar cerebral infarct subgroups( P ＜ 0.05). The FMP function of anterior cerebral infarct patients was significantly higher than that of healthy group before rehabilitative intervention. Although each FMP parameter reduced after rehabilitative intervention, the difference between was not significant compared with that of before therapy.CONCLUSION: FMP function analysis can completely and objectively reflect the coagulation status of the patients with ischemic cerebrovascular diseases, and it can also reflect the range and severity of infarct to some extent. Although common rehabilitative intervention cannot effectively improve the high-coagulation of the blood, the impacts of specific rehabilitative intervention on the coagulation mechanism deserve further investigation.

The plasma levels of inflammatory cytokine interleukin-6 (IL-6) and anti-inflammatory cytokine interleukin-10 (IL-10) in the patients with unstable angina or stable angina were determined and compared. In 30 patients with unstable angina and 22 patients with stable angina, plasma levels of IL-10 and IL-6 were detected by ELISA and plasma lipid parameters by lipid research clinical methods respectively. The results showed plasma levels of IL-10 were significantly lower in unstable angina group than in stable angina group (P = 0.005), while those of IL-6 were significantly increased in unstable angina group as compared with those in stable angina group (P = 0.039). There was a significantly negative correlation between IL-10 and IL-6 in patients with unstable angina (r = -0.41, P = 0.003). In the unstable angina group, IL-6 levels were obviously positively correlated with TC (r = 0.314, P = 0.023), but not with TG and HDL. There were no significant correlations between IL-10 and plasma lipid parameters. It was suggested that the decreased IL-10 and increased IL-6 might be associated with the atheromatous plaque stability and progression of coronary heart diseases. IL-10 may play an important role in preventing coronary vascular lesions.
Angina, Unstable/*blood ; Interleukin-10/*blood ; Interleukin-6/*blood

A new, convenient, and rapid method for kinetic measurement of human fibrinolysis was established. The alteration of absorbance (A) in the process of blood coagulation and lyses was automatically scanned and recorded using a UV2000 spectrophotometer connected to a computer. The parameters of human fibrinolysis kinetics were established. Urokinase at 20 U/mL was the optimal concentration used. There was significant difference in fibrinolysis kinetics and plasma plasminogen concentration between 22 normal subjects and 27 patients with acute myeloblastic leukemia (P<0.05 and <0.01 respectively). The coefficience of variation was (5.24+/-1.51)%. This method could also be used to measure the plasma fibrinogen concentration at the same time. It was concluded that this method was stable and was capable of providing dynamic, direct experimental data and multiparemeters for clinicians. It was also valuable in evaluating the anti-and pro-fibrinolytic capcity of patients' plasmas, allowing for monitoring of therapy, choice of drugs and adjustment of drug concentrations.

Blindness ; epidemiology ; etiology ; prevention & control ; China ; epidemiology ; Humans ; Vision, Low ; epidemiology ; etiology ; prevention & control

Recent studies have demonstrated an association of glucagon-like peptide-1 (GLP-1) signaling defect with non-alcoholic fatty liver disease (NAFLD).Native GLP-1 and GLP-1-based agents may directly act on hepatocytes through activation of GLP-1 receptors in hepatocytes,resulting in the regulation of gene expression associated with insulin resistance and lipid metabolism,and the suppression of oxidative stress in liver cells.Moreover,GLP-1-based agents have been reported to be effective in improving hepatic endpoints in patients with NAFLD.