BackgroundMüller cells has been recognized as being vital in both healthy and diseased retina.Recently,these cells even have been identified to be the source of retinal progenitor cells.In order to study the possible function of the retinal Müller cells,it is important to establish a practical procedure to obtain the purified cells. ObjectiveThis study was to simplify the procedure of primary culture and purification of retinal Müller cells in vitro. MethodsEyeballs of SPF newborn SD rats were enucleated and retinas were dissected free after soaking the eyeballs overnight in DMEM/F12 medium in room temperature.Then the retinas were mechanically dissociated into micro aggregates and cultured in DMEM/F12 medium containing 10％ FBS for 8-10 days.The floating retinal aggregates and debris were removed and the medium was changed in 2-3 days interval to get more purified flat cell population.Cultured cells were passaged after confluent.Immunofluorescence staining was used to detect the response to glutamine synthetase (GS) and Vimentin for the identification of the cultured Müller cells,and flow cytometry (FCM) was used to estimate the purity of the cells. Results Cultured Müller cells had large cellular body and richer cytoplasm.More than 95％ of the cells showed the positive response for GS with the brown staining in cytoplasm and cellular nuclei,and the positive stainiug also was seen for Vimentin in cytoplasm.FCM showed that 99.7％ of the cells were GS positive after 3 passages.Conclusions Modified procedure in this experiment is a simple and practical method for culturing retinal Müller cells.

Retina is subjected to many acquired and inherited neuronal degenerative diseases such as agerelated macular degeneration (AMD), diabetic retinopathy (DR) and retinitis pigmentosa (RP). All of these diseases are associated with the progressive damage and loss of photoreceptors, which is causing visual impairment and irreversible blindness. Stem-cell therapy is being widely considered as a promising treatment of these incurable retina diseases. However, in mammals including humans, there seems to be little or no recovery of lost cells. By contrast, nonmammalian vertebrates, such as amphibians and fish, have robust regenerative responses to injury, which can lead to the near complete restoration of the neurons lost through injury. Nevertheless ,over the past several years, studies have investigated that stem cells do exist in the adult mammalian eyes, and at least some types of neurons can be regenerated in the mammalian retina by stimulating with growth factors or transcription factors. These recent results suggest that some part of the regenerative program occurring in lower vertebrates remains in the mammalian retina.Here, the origin of various of adult retinal stem cells for the self-renewal and proliferation. and the relevant influencing factors were summarized.

A 17-year-old male had a coin sized, follicular plaque on the glabella for 3 months. Histopathologic examination revealed reticular degeneration in the pilosebaceous follicles and amorphous homogenous materials between the degenerated cells. Alcian blue and toluidine blue stained the material as blue and metachromatically purple, respectively. The material was subsequently confirmed as acid mucopolysaccharide. Two months after the initial visit, the lesion showed a tendancy to heal spontaneously. According to the data obtained, the case was considered as an acute benign form of follicular mucinosis.
Adolescent ; Alcian Blue ; Humans ; Male ; Mucinosis, Follicular* ; Numismatics ; Tolonium Chloride

Biliary atresia (BA) is characterized of progressive inflammation and obstruction with fibrosis in biliary system and presents symptoms with obstructive jaundice in neonatal period,if its treatment is not ineffectively may lead to progressive liver fibrosis,end-stage liver failure and die within 2 years.Kasai procedure is the major method in BA treatment,but not all cases have postoperative jaundice clearance and survive with native liver,it is need to optimize the choice of surgical time and methods,postoperative protocol with medicine,prevention and treatment of complications for improving the postoperative therapeutic effect.In this paper,the current option of clinical research and statue in Kasai procedure were summarized.

Objective To investigate the effects of temporary hepatic inflow occlusion (HIO) on hepatic energy metabolism of rats with liver cirrhosis. Methods Animal survival rate and hepatic energy metabolism were observed following different periods of HIO with the effect of portal vein blood bypass (PBB) and without PBB, including repiratory controa ratio (RCR), adenosine tirphosphate (ATP), and arterial blood ketone body ratio (AKBR). The sham group served as the control. Results ATP, RCR and AKBR decreased significantly ischemia (P

Ptosis is one of the most common diseases in oculoplastics. Surgical treatment is the only way to correcting ptosis. Most of doctors paid special attention to surgical technique, rather than to some related issues of operation. Timing is crucial for ptosis surgery. Both cosmetic and function need to be considered for a success surgery, the evaluation of extraocular muscle disorder is impor- tant for surgical result and postoperative complications.

Objective To investigate the protective effect of pentoxifylline (PTX) on bile duct in grafts against ischemia-reperfusion (IR) injury and its potential mechanisms in the animal model of OLTx in miniature swines. Methods After PTX was added to the preservation solution and administrated through hepatic artery, changes of blood flow, activity of ATPase, apoptosis of epithelial cells, and pathomorphology of the bile duct were investigated in the animal model of OLTx in miniature swines. The animals were divided into IR, IR+NS, and IR + PTX groups. Results The results showed that the incidence of biliary necrosis was significantly lower in IR+PTX group than that in IR and IR +NS groups. When compared with those in IR and IR +NS groups, GGT and ALP levels, numbers of apoptosis cells, and scores of pathomorphology were significantly decreased in IR+PTX group, while blood flow, activity of Na +-K +ATPase, Ca 2+ -ATPase of bile duct in grafts were significantly elevated. Conclusion These results suggest that PTX has multiple antagonistic effects against IR injuries of the bile duct. The effects of PTX on bile duct of grafts against IR injuries are possibly correlated with the improvement of the microcirculation, preservation of the ATPase activity of the bile duct, and suppression of the apoptosis of the bile duct cells.

OBJECTIVE To study the rational use of antibiotics in a comprehensive general hospital.METHODS The clinical data of 583 cases used the five kinds of most frequently antibiotics during Nov 20-26,2006 in a comprehensive general hospital were collected and analyzed.RESULTS The total five kinds of most frequently antibiotics used in this hospital were the third generation of cephalosporins,cefoperazone/tazobactam(Kaisi),flomoxef(Fuomaning),cefoperazone/tazobactam(Kaishute),cefpiramide(Xibaiao) and cefoperazone/tazobactam(Xianbita).The daily frequency of these antibiotics was rational to the drug metabolic dynamics characteristics.Some patients received the long time therapy of antibiotic,the longest one was 22 days.The frequency of over-doses in these patients was 19.9%.CONCLUSIONS Antibiotics use is apparently rational in this hospital and the training and education for drug use should be enhanced in the future.

Among the many causes producing lower back pain herniated nucleus pulposus and bulging disk have occupiedlarge percentaages and uniformly showed defect on lateral aspect of contrast filled thecal sac. But it isessential to differentiate each conditions from the other because of their different treatment methods.differentiation at metrizamide myelography between a diffusely bullging disk(unlikely to cause nerve rootcompression) and a herniated disk is based on the curature, extent, and multipllicity of the extradural deformityof the anterolateral margin of the contrast filled sac and o hte presence of fusiform widening of the most distalpart of the affected nerve root. The deformities caused by a bullging disk are round, usually symmetrical(aothoughoccasionally more prominent on one side), do not extend above or below the disk space, and can show multiple levelinvolvement; the nerve root is uniform in caliber and normal in size(although some of severe bulging show fusiformwidening of the most distal part of the affected nerve root). The deformities caused by a herniated disk isangular and extends cephalad and/or caudal to the level of the disk space; the affected nerve root is usuallywidened in its most distal visible part. A consecutive series of 50 patients with low back pain and no pasthistory of back surgery who did metrizamide myelography underwent spine CT and /or laminectomy. Using the criterialisted above for differentiation of bulging from herniated disk on metrizamide myelography, the myelographicdiagnosis was correct in 32(22 patients) of 34(24 patients) (95%) surgically and/or computed tomographicallyconfirmed bulging disks and in all 26 (100%) surgically and/or computed tomographically confirmed herniated disks.
Clothing ; Congenital Abnormalities ; Humans ; Intervertebral Disc Displacement ; Laminectomy ; Low Back Pain ; Metrizamide ; Myelography ; Spine

No abstract available.
Arteriovenous Malformations*