Leptin,the product of the obese gene,is a 16kDa secreted protein produced by white adipocytes.Because of its dual nature as a hormone and cytokine,leptin plays a role in regulating energy metabolism,inflam-marion,immune response,neuroendocrine and angiogenesis,and so on.The review focuses on the research and controversy of leptin's effect in osteoarthritis.

Objective To retrospectively analyze the risk factors of recurrent groin hernia. Methods Data came from all hernia repairs recorded in our hospital between 1991 and 2001. A total of 1 082 cases of groin hernia was analyzed through Cox proportional hazard model to determine the relative risks between recurrence and mode of admission, types of groin hernia, repair methods (traditional/tension free hernioplasty), and post operative complications.Results From 1991 to 2001,1 082 groin hernia operations were performed in our hospital, 88.9% for primary hernia and 11.2% for recurrent hernia. As compared with traditional hernia repair methods, Lichtenstein’s tension free hernioplasty technique had less relative risk for recurrent hernia repair than that for primary hernia repair. Postoperative complications and indirect hernia were linked to an increased relative risk for recurrence. Conclusion There are many factors affecting the recurrence of inguinal hernia, but the use of tension free hernia repair may decrease re recurrence of recurrent hernia.

Objective To review experimental study and clinical application of materials to bile duct repair and reconstruction.Methods Comparison of different materials was made between advantages and disadvantages.Results Synthetic grafts such as vitallium,teflon are easy to handle,but have no flexion,and have foreign body reaction.Although autogenous free tissues such as venous patch and peritonium are resistant to infection,they are likley to lead to bile duct stricture because of lacking adeuqate blood supply.Vascularized neibouring tissues for repearing bile duct defect have satisfactory results.Conclusions To avoid bile duct striccture,vary measures should be taken to repair bile duct defecs;for segmental loss of bile duct,end to end anastomosis or Roux-en-Y biliary jejunal reconstruction should be applied.

Objective To evaluate the expression of ? opioid receptor of the knee joint synovium tissue in patients with chronic inflammation. Methods The patients were divided into inflammatory group and control group(n=25 for both). Those who were allocated to the inflammatory group were diagnosed as osteoarthritis by arthroscopy, and in the control group, the patients were having dislocation of patella and took internal fixation with arthroscopy. The synovium tissues were harvested from suprapateller bursa, articulation vestibule, intercondylar fossa and articulation metacele. The synovium were taken to measure ? opioid receptor by immunohistochemistry and RT-PCR in both groups. Results Immunohistochemical and RT-PCR results revealed that the expression of mRNA and the optical density (OD) of immunoreaction of ?-opioid receptor in the knee synovium tissue in the chronic inflammation group were significantly higher than those in the control group (P0.05). Conclusion The expression of ? opioid receptor of the knee joint synovium tissue in chronic inflammation was significantly up-regulated. It may play a partial role in the peripheral mechanism of morphine.

There are twenty-one gene-associated sites of hereditary spastic paraplegia (HSP) that have been reported, including eleve gene-associated sites of autosomal dominant inheritance, seven gene-associated sites of autosomal recessive and three gene-associated sites of X2 linked recessive. Nine genes of HSP have been cloned as followed, atlastin, spastin, paraplegin, L1CAM, PLP, Hsp60, maspardin, TRAK1 and so on.

Air Pollutants ; analysis ; Animals ; Child ; Esters ; toxicity ; Humans ; Liver ; drug effects ; Phthalic Acids ; analysis ; metabolism ; toxicity ; Reproduction ; drug effects ; Soil Pollutants ; analysis ; Thyroid Gland ; drug effects ; Water Pollutants, Chemical ; analysis

Otorhinolaryngologic Diseases ; Otorhinolaryngologic Surgical Procedures ; Periodicals as Topic

Avian influenza viruses (AIV) can cause serious economic losses and threaten to human health. The laboratory methods for rapid and accurate detecting AIV ensure timely implementation of intervention strategies so that it plays a key role in avian influenza prevention and control. The laboratory technologies for detecting AIV are topic subject and developed quickly those days. This paper reviews the advances of laboratory diagnosis technologies for AIV at 3 aspects of virus isolation, immunoassay and molecular diagnostics.

Objective To investigate the disease categories(DCs),admitting departments(ADs),length of stay(LS),and hospital costs(HCs)of the in-patients in the rehabilitation department of a general hospital. Methods A total of 1 246 in-patients admitted to the authors'rehabilitation department over the period from 2004 to 2005 were analyzed retrospectively with regard to their age,DCs,ADs,LS and HCs by means of the Hospital Case Enquiry and Statistical System of Guangdong Province.Results The average age of the in-patients in 2005 was 61.2?13.7 years,and their average number of DCs was 5.52?1.54.Common first diagnoses included cerebral in- farct(40.4%),cerebral hemorrhage(12.6%),cervical spondylosis(5.7%),traumatic brain injury(5.1%), and fracture(3.7%).Rehabilitation(52.3%,),neurology(26.4%),neurosurgery(7.9%)and orthopedics (4.1%)were the most common initial admitting departments.The average LS was 39.1 d,and the LS of patients with rehabilitation,neurology,orthopedics and neurosurgery as their initial admitting department was 23.7 d,44.4 d, 60.2 d and 62.4 d,respectively.The average LS of those with their first diagnosis as cerebral infarct,cervical spon- dylosis,traumatic brain injury and fracture was 34.2 d,21.3 d,64.2 d and 63.5 d,respectively.The average HCs were 36 168 yuan RMB,with the cost of medicine the highest(47.6%),followed by costs for various therapies.The costs for cervical spodylosis were the lowest,while those for traumatic brain injury were the highest.Conclusion The rehabilitation in-patients usually had multiple DCs,needed lengthy stays and incurred high hospital and medicine costs.It is suggested that early rehabilitation interventions should be implemented before the patients are transferred to the rehabilitation ward so as to reduce HCs and LS.

Along with the development of interventional appliances and proficiency of operational skills,the interventional diagnosis and treatment via hepatic portal vein system have achieved great progress and improvement.However,in order to further exploit the advantages of interventional diagnosis and treatment, the review of the anatomical structures,normal aberrance of portal venous system were needed.Getting familiar with pathologic condition to discover the new interventional appliances and embolic agents,and then in term of conduct the research on a very tough substancial base in a down-to-earth manner were important.