The recent development of process analytical chemistry(PAC) in the past years is reviewed. The content includes process measurement, sensor, chemometrics etc. The future of PAC is also discussed. 62 references are cited

Accidents, Occupational ; Acute Disease ; Aniline Compounds ; poisoning ; Humans ; Occupational Diseases

0.05).Conclusion TP may have protective effects on chronical hypoxia induced polycythemia in rats.

Objective To investigate the effect of pigment epithelium- derived factor (PEDF) on p38MAPK-CREB pathway and the expression of fibronectin (FN) in human mesangial cells (HMCs) cultured with high glucose. Methods HMCs were treated with different concentrations of glucose and the osmotic control respectively in the presence or absence of PEDF for 24 h:normal glucose (5.6 mmol/L),24.4 mmol/L mannitol,high glucose (30 mmol/L),high glucose+PEDF(30 mmol/L glucose with 10 nmol/L PEDF,40 nmol/L PEDF or 100 nmol/L PEDF).After samples were collected,the expression of phospho-p38MAPK (p-p38) and p-CREB was assessed by Western blotting,while FN mRNA and protein expression was assessed with RT-PCR and ELISA respectively. Results In contrast to normal glucose and mannitol treatments,the expression of p-p38MAPK,p-CREB and FN increased significantly in high glucose group (all P＜ 0.01).However,PEDF abolished the up-regulation of p-p38MAPK,p-CREB and FN induced by high glucose (all P＜0.05). Conclusion PEDF may inhibit fibrosis through P38MAPK-CREB pathway in diabetic nephropathy.

Adolescent ; Adult ; Female ; Histiocytic Necrotizing Lymphadenitis ; diagnosis ; therapy ; Humans ; Lymph Nodes ; Male ; Middle Aged ; Neck ; Young Adult

Objective Effect of spirulina's complex preparation(SACP) on morphologies and protein expression of HSP70 in myocardium, skeletal muscle and liver tissue were investigated in the mice during 4-week prolonged exhaustive exercise . Methods Male mice were divided into 5 groups as follow: N(control), M(exercise with moderate intensity), MS(exercise with moderate intensity plus spirulina supplementation), F(exercise with increasing intensity) and FS(exercise with increasing intensity plus spirulina supplementation). Light microscope and electron microscope were used to observe the effect of SACP on morphologies in myocardium, skeletal muscle and liver tissue in mice in group F and group FS. HSP70 protein expression was detected by immunohistochemical method. Results Under the light microscope, edema, degeneration and necroses in myocardium, skeletal muscle and liver tissues were found in the mice of group F, and fragmentation of muscle fiber, cell swelling, mitochondrial swelling and nucleoplasm solution in myocardium, skeletal muscle were found under the electron microscope in the mice of group F. The aforementioned lesions of myocardium, skeletal muscle and liver tissue in the mice of group FS were obviously alleiated. HSP70 protein expression in myocardium, skeletal muscle cells and liver cells in swimming mice was significantly higher than that in control (P0.05). Conclusions SACP had protecting effect against the microtrauma in myocardium, skeletal muscle and liver tissues caused by prolonged exhaustive exercise, and the effect was probably related to the improvement of the protein expression of HSP70 affected by SACP supplementation.

Objective To observe the expressions of vascular endothelial growth factor(VEGF) and cyclooxygenase-2(COX-2) in the cerebral tissue following hypoxic-ischemic encephalopathy(HIE) in newborn rats and explore the machanism of inosine in protecting against hypoxic-ischemic brain damage(HIBD).Methods Sixty-six newborn rats aged 7 days were divided into sham,control and experimental groups.HIE models were made by clamping the right cervical artery and making hypoxia for 2 hours.The rats in experimental group began injecting inosine,at 1 day before experiment,and the rats in the sham and control groups saline solution with same dose.The samples were made at the given time,and expressions of VEGF and COX-2 were investigated by immunohistochemical technique.Results The cerebral tissue had no expression of VEGF and COX-2 in sham group.From 2 hours on cortex and striatum after HIE in control and experimental groups,expressions of VEGF and COX-2 increased rapidly,peaking at 12-24 hours,and then decreased gradually.Expressions of VEGF and COX-2 were higher in experimental group(All P

Objective To observe the effect of different doses of propofol injection and propofol medium/long-chain fat emulsion injection in short time infusion on plasma ketone body ratio,to eva-lute its effecton hepatic energy metabolism.Methods Forty patients,aged 18-50 years old,ASA Ⅰ orⅡ undergoing selective surgery were randomly divided into 4 groups with 10 cases in each;propofol injection 4 mg·kg-1·h-1 maintain anesthesia (group L4 ),propofol injection 6 mg·kg-1·h-1 maintain anesthesia (group L6 ),propofol medium/long-chain fat emulsion injection 4 mg·kg-1·h-1 maintain anesthesia (group M4 ),propofol medium/long-chain fat emulsion injection 6 mg·kg-1·h-1 maintain anesthesia (group M6 ).MAP,HR,SpO2 and PET CO2 were recorded before anesthesia induction (T0 ),after tracheal intubation (T1 ),after 2 hours infusion of propofol (T2 )and operation completed (T3 ).The blood samples were collected at T1 and T2 to detect the level of acetoacetate,β-hydroxybu-tyrate and to calculate the blood ketone body ratio (the ratio of acetoacetate andβ-hydroxybutyrate). Results MAP,HR,SpO2 ,PET CO2 at T0-T3 and acetoacetate,β-hydroxybutyrate,blood ketone body ratio at T1 ,T2 showed no significant statistic difference.Conclusion Different doses of propofol and different doses of propofol medium/long-chain fat emulsion injection in short time continuous in-fusion has no obvious effect on hepatic energy metabolism;same dose of propofol injection and propo-fol medium/long-chain fat emulsion injection in short time continuous infusion has no obvious effect on hepatic energy metabolism.

One hundred and twenty cases of osteosarcoma were reported.Re-examination of all the tissue specimens revealed that typical neoplastic osteoid was found only in 83% of the cases.It is now generally accepted that the demonstration of osteoid is not essential for the diagnosis,but the microscopic features of sarcomatous stroma,pheomorphism of osteoblasts,anaplastic giant cells,chondrosarcomatous and fihrosarcomatous tissue are of diagnostic importance.The differential diagnosis between neoplastid osteoid and pseudo-osteoid(fibrillar hyalin-ized collagen)were discussed.Forty-eight surgical specimens were stained with polyclonal actin,monoclonal BMP,vi-mentin,collagen type IV and UEA-1 with immunohistochemical ABC.It was found that when there was combined positive expression of monoclonal BMP,vimentin,collagen type IV,UEA-1 and polyclonal actin,or monoclonal BMP,vimentin UEA-1 and/or polyclonal actin,or monoclonal BMP,vimentin and/or polyclonal actin,it was of diagnostic value.However,the five markers were of no value to distinguish fibrillar hyalinized collagen from osteoid stroma.It is believed that the appropriate combination of the immunohistochemical markers is imperative to promote the accuracy of the pathological diagnosis of osteosarcoma and its differential diagnosis.

[Objective] To observe the sera immunoglobulin E(IgE) and Complement C3(C3)level changes in patients with chronic urticaria.[Methods] To detect sera IgE and Complement C3 content of 60 cases of chronic urticaria patients and 60 cases of healthy persons by chemiluminescence and Immunity Transmission Turbidity.At the same time,we tested sera IgE and Complement C3 content of both penetration needling and drug groups before and after treatment of 60 cases,and anaylysed the correlation of IgE and Complement C3.[Results]Higher level of sera IgE was detected in patients with chronic urticaria(P 0.05);the correlation of IgE and Complement C3 was negative in both groups.[Conclusions]Detecting Sera IgE and Complement C3 level have reference value in the diagnosis and treatment of chronic urticaria.