Carcinoma, Squamous Cell ; diagnosis ; Humans ; Maxilla ; pathology ; Maxillary Neoplasms ; diagnosis ; Neoplasm Metastasis ; Spinal Neoplasms ; secondary

0.05);the body weight of 170 and 357 mg/kg 3,4-DCA exposure groups decreased significantly(P

Cardiovascular Diseases ; Humans ; MicroRNAs

BACKGROUND: Selective posterior rhizotomy has been extensively acknowledged as an effective method of relieving lower limb spasticity in cerebral palsy. However, the postoperative complications such as reduced muscle strength and imbalance of the spine are of concern among surgeons and therapists. The combination of limited selective posterior rhizotomy (LSPR) with adductor tenotomy can decrease these complications without compromising the treatment effects.OBJECTIVE: To investigate the effects of combination therapy of LSPR with adductor tenotomy on lower limb spasticity, gait and movement of the patients.DESIGN: A self-controlled trial and observational follow-up taking children with cerebral palsy as the subjects.SETTING: Orthopedic Department of First Hospital Affiliated to Dalian Medical University.PARTICIPANTS: Thirty children patients with cerebral palsy treated in the Orthopedics Department of the First Affiliated Hospital of Jilin University from January 2001 to December 2002 were recruited in this trial. They presented scissors gait, flexed knee and tiptoeing of different degree. There were 18 cases of brisk tendon reflex and ankle clonus, and 15 cases of positive Babinski' s sign. All the patients had no immobile soft tissue contracture and could either accomplish walking and crouching independently or walk with arms on assistant devices.INTERVENTIONS: The patients received LSPR of L5 and S1 dorsal roots together with bilateral adductor tenotomy. Muscle tone and strength, knee and Achilles tendon reflexes, ankle clonus and pathologic signs were recorded before and after operation. X-ray examination on lumbar spine and pelvic was also taken for detection of deformity. The patients' movements were assessed according to their standing and walking postures, standing and crouching movements before operation and on follow-up. During follow-up all the mentioned indices were recorded by reference to the original case history, hospital reexamination and correspondence with the patients.MAIN OUTCOME MEASURES: The amelioration in lower limb spasticity and grading of lower limb()movements.RESULTS: During the follow-up for six months to three years(the mean of 11 months), the patients' lower limb spasticity was decreased by 2. 5 grades. The gait was also improved with disappeared scissors gait and tiptoeing, knee flexion was improved and the patients could walk with heels on the ground. All ankle clonus and pathologic reflexes disappeared. The brisk knee reflex in 12 patients became sluggish after operation. There was no decrease in lower limb strength or permanent hypesthesia. X-ray examination of lumbar spine and pelvic showed no deformity in 9 patients after over 2-year follow-up. The upper limb spasticity, salivation and aphasia in 8 patients were also ameliorated. The grading for postoperative standing, walking and crouching-standing alternation[(4.25±0.91), (3.92±0.65) and(4.02±0.74)] wasimproved(t=2.04-2.98, P ＜0.05-0.01).CONCLUSION: The combination of LSPR with adductor tenotomy can effectively ameliorate lower limb spasticity and movement with decreased operative damage.

Objective To explore our clinical experience on treatment of intracranial and extracranial arterial stenosis using multiple stents placement. Methods 17 stents were deployed into 12 arteries in 8 patients with intracranial and extracranial arterial stenosis. We utilized self expanding stents in extracranial carotid arteries and balloon expanding stents for intracranial arteries or vertebral arteries. Results All procedures were performed successfully and all stenoses were dilated and improved. Short term follow up angiogram revealed only one vessel occlusion and no significant restenoses in other stented vessels together with no recurence of clinical symptoms. Conclusions Multiple stents placement is a valid alternative for the treatment of intracranial and extracranial arterial stenoses.

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AIM:To evaluate the morphological and functional changes of retinas induced by treatment of tunicamycin with optical coherence tomography (OCT) in rats.METHODS:Totally 60 SD rats were randomly divided into 3 groups (20 in each group), 0.5mg/kg (in low dose group), 1.5mg/kg (in high dose group) tunicamycin were injected into vitreous cavity and saline (9g/L NaCl) were injected in the same dose as a control group.Changes of retinas were observed by OCT on the 1,7 and 14d after treatment of tunicamycin.Then the rats were sacrificed, retinas were taken out and embedded by the paraffin, tissue sections and the HE staining were performed.RESULTS:OCT results suggested that tunicamycin played damage effects on retinal morphology and structure which appeared a time-and dose-dependent.Fundus photography results suggested that 2wk after tunicamycin treatments, with the gradually changing of tunicamycin concentration, peripheral retinal and macular region became pale color gradually, edema occurred in optic disk, retinal vessels appeared thinner in the high dose group, optic nerve came out atrophy.Fluorescein angiography confirmed that tunicamycin injection in vitreous cavity 2wk later, retinal vessels injury occurred, resulted in leaking of intravascular contrast agent from peripheral to the central part of the retinas.Electrophysiological data showed that retinal electrogram occurred disorder induced by tunicamycin, such as the amplitude of a wave, b wave decreased gradually, even closed to zero, which was very different from control significantly (P<0.05).HE staining of paraffin sections showed that retina injuries induced by tunicamycin were in dose-time dependent, which was consistent with the results of OCT.CONCLUSION: Clinical retinal diseases could be simulated by retinal damage animal model induced by tunicamycin treatment.OCT detection offered real-time images of the retinal cross-section, which provided a helpful non-invasive method for detecting and evaluating the retinal damages.

Accidents, Occupational ; prevention & control ; China ; Humans ; Occupational Diseases ; prevention & control ; Occupational Exposure ; prevention & control ; Occupational Health Services ; organization & administration ; Safety

To summarize the accumulated successful experiences, defeated cases and lessons the recent year’s clinical studies, works and experiences of hip prosthesis combining the relevant status abroad and to analyze some questions such as the operations are not standardized; the indications are not strict; overemphasizing the navigation and mini-invasion; clinical techniques are irregular, and the patients should be educated, and so on. The above questions influence the good development of the Chinese joint prosthesis and reduce the clinical outcomes of the joint prosthesis. Taken together, these questions should be concerned and resolved. Relevant solutions are discussed.

The bioactive materials, such as biological glass, hydroxyl apatite, glass ceramics which contains the hydroxyl apatite and wollastonite, are possible to unify with the bone tissue together. However, many questions like whether the materials contact and unify directly with the bone, whether the speeds of unification have the differences, and whether materials themselves simultaneously have abilities to promote the bone formation are not clear and wait for the exposition. The researches have been made to observe the contact surface between biological material and bone, as well as the relationship among the apatite level and the bioactivity of materials through the transmission electron microscopy. In addition, in vivo hybridization has been used to discuss the mRNA expression and its influence in the cell around materials. The conclusion is that the bioactivity of glass ceramics is higher than that of hydroxyl apatite, with the easy unification with bone tissue.