Objective:To observe the effects of biological zymolytic milk on the intestinal tract absorptivity of iron in rats.Methods:Thirty male Wistar rats were randomly divided into control group and experiment group.The rats were fed basic diety without Fe for 3 days.Then rats in control group received Na55Fe EDTA fortified milk by intragastric administration, while rats in experiment group received Na55Fe EDTA zymolytic milk.The content of 55Fe in feces,blood,liver and spleen was measured.Results:The intestinal tract absorptivity of 55Fe in experiment group was significantly higher than that in control group(P

Antigens, CD ; metabolism ; Antigens, Differentiation, Myelomonocytic ; metabolism ; Diagnosis, Differential ; Histiocytoma, Benign Fibrous ; metabolism ; pathology ; surgery ; Humans ; Male ; Middle Aged ; Neprilysin ; metabolism ; Receptors, Cell Surface ; metabolism ; Skin Neoplasms ; metabolism ; pathology ; surgery ; Thigh ; Vimentin ; metabolism

Objective To solve the difficulty of intubation of nasojejunal feeding tube under digital subtraction angiography (DSA) system when conventional methods were failed.Methods Seventy-one patients who failed to place the nasojejunal feeding tube by single guide wire under DSA conventional methods.With the methods of decreasing the stomach volume,changing the body posi-tion,and using a catheter or gastrointestinal motility,the nasojejunal feeding tube was placed into the proper position (more than 30cm far away from Treitz or gastrointestinal anastomosis).Results All the procedures were successfully accomplished.No compli-cations,such as throat damage,abdominal pain,perforation and hemorrhage of digestive tract were found.The mean duration under DSA was four minutes (2-7min).Conclusion With the help of various methods above,we can improve the success rate of intuba-tion and reduce the duration of the nasojejunal feeding tube placement,when conventional methods were failed.

Objective To explore the mastery of relevant knowledge and skills for autism rehabilitation teachers in Beijing private rehabilitation agencies. Methods 51 autism rehabilitation teachers were selected from 10 Beijing private rehabilitation agencies and tested with self-prepared questionnaire. Results Rehabilitation teachers believed that professional knowledge, rehabilitation skills and special education basics ranked the former three positions as for knowledge importance; teachers' basic skills, professional knowledge and special education basics ranked the former three positions as for knowledge mastery. There were difference in academic background and business life. 95% teachers believed that the training form was knowledge plus case plus guidance. The best training time was weekends or summer and winter vacations. The curriculum expected mainly focused on behavior modification, class management, and training system that generally used for children with autism. Conclusion Autism rehabilitation teachers in Beijing private rehabilitation agencies urgently need training in the aspects of expertise, rehabilitation skills and so on.

Objective To investigate the short-term efficacy and the influencing factorof zoledroniacid combined with ra-diotherapy and single radiotherapy in the treatmenof bone metastasiin non-small cell lung cance(NSCL) .MethodTotally 117 NSCLpatientwith bone metastase(153 lesions) receiving the bone lesion radiotherapy in the TumoCenteof ouhospital from 2009 to 2013 were selected and treated by zoledroniacid combined with radiotherapy (combined therapy group ,n=54) and the single radiotherapy (single radiotherapy group ,n=63) .The bone pain relief and influence factorwere analyzed .ResultThe effective ratein the single radiotherapy group and the combined radiotherapy group were 69 .74% and 92 .21% respectively (χ2 =13 .75 ,P＜0 .01);the multivariate Logistiregression analysishowed thathe bone pain relief wacorrelated with the treatmenmode ,moreovethe bone pain relief rate in the combined therapy group wasignificantly highethan thain the single therapy group (OR=4 .60 ,95% CI:1 .23-17 .20 ,P=0 .02) .In the subgroup analysiof treatmenmode,the patientwith osteolytile-sions(OR=26 .59 ,95% CI:3 .29-215 .12 ,P=0 .00) had betteeffec.The combined therapy group had more superiority in the as-pecof non-skeletal related eventoccurrence (OR=4 .40 ,95% CI:1 .49 -12 .99 ,P=0 .01) .Conclusion Radiotherapy combined with zoledroniacid habettecurative effeccompared with single radiotherapy in the NSCLC patientwith bone metastasi.

Objective To explore the changes of plasma angiotensinⅡ (AngⅡ) and cardiac function,and the curative effect of children with acute viral myocarditis (VMC) treated with captopril(CAP).Methods Concentrations of plasma AngⅡ were measured with radio-immunity and cardiac function was detected by Doppler echocardiography for the VMC group (n=60) before and after treatment [the CAP group (n=30), the routine group (n=30) and the control group (n=30)].Results 1. The level of plasma AngⅡ significantly increased and the contractive and diastolic function obviously declined in children with acute VMC. There was a significant difference between VMC group and control group, with a significant correlation between the level of AngⅡand the contractive diastolic function.2. Compared with the level before treatment, the level of AngⅡ decreased and the contractive function obviously ameliorated in two groups; the diastolic function obviously ameliorated in the CAP group and did not ameliorate in the routine group after treatment. In CAP group the level of AngⅡ and the cardiac function significantly improved; there were statistical differences between the two groups after treatment.Conclusions 1.The increase of the plasma AngⅡ was an important factor for decrements of the contractive and diastolic function in acute viral myocarditis.2.It could decrease the concentration of plasma AngⅡ and ameliorate cardiac function in children with acute VMC treated with captopril,which was an effective therapy for acute VMC.

OBJECTIVETo investigate the incidence, MRI characteristics and invasion route of nasopharyngeal carcinoma (NPC) infiltrating the cavernous sinus.

METHODSThe data of 141 patients with histologically proven NPC collected from May 2003 to June 2004 were reviewed. All patients were examined by 1.5-tesla superconducting MR unit to evaluate the tumor extent. MR FSE technique was used for T1 WI and T2WI images in the axial plane, followed by FSPGR fat-suppressed gadolinium-enhancement for T1WI images in the axial and coronal sections. All MR images were interpreted and evaluated by two diagnostic radiologists, paying particular attention to the nasopharynx and cavernous sinus infiltration.

RESULTSMR imaging showed infiltration of 49 cavernous sinuses in 39 patients (27.7%). The most common MRI features were enlargement of cavernous sinus with unconventional enhancement (22/49, 44.9%), even with formation of mass inside the sinus (9/49, 18.4%). The other MRI image features were local or diffuse dura mater thickening of cavernous sinus and presence of obscure structure as intra-sinus blurs and hazies inside. The most common infiltration route is through the foramen ovale (18/49, 36.7%), or through both the foramen ovale and foramen lacerum (6/49, 12.2%).

CONCLUSIONIn NPC patients, MRI invasion is characteristically and clearly shown as changes in the cavernous sinus. Possession of this information is crucial for giving correct treatment. The main infiltrtion route is through foramen ovale.

Adolescent ; Adult ; Aged ; Aged, 80 and over ; Cavernous Sinus ; pathology ; Diagnosis, Differential ; Female ; Humans ; Magnetic Resonance Imaging ; methods ; Male ; Middle Aged ; Nasopharyngeal Neoplasms ; pathology ; Neoplasm Invasiveness ; Reproducibility of Results ; Vascular Neoplasms ; pathology

BACKGROUNDThe diagnosis of diffuse hepatic lesions in early stage is a tough task at any time for clinical conventional imaging. Magnetic resonance diffusion-weighted imaging (MR DWI) can detect the changes of tissue structure at molecular level. This study was designed to determine the value of DWI in the diagnosis of diffuse liver lesions in early stage.

METHODSDiffuse liver lesions were induced by diethylnitrosamine in 42 rats of test group. Fourteen rats in control group were fed with pure water. Dynamic changes of MR DWI were observed every week in both groups during the early stage of diffuse liver lesions (1 to 12 weeks after drug administration in the test group). Apparent diffusion coefficient (ADC) values of liver parenchyma in different stages and pathologic changes were analyzed.

RESULTSThe process of diffuse hepatic lesions in the test group was classified into three stages according to pathological changes, namely hepatitis, hepatic fibrosis and cirrhosis. No obvious morphological changes were shown by conventional imaging in both groups during this stage. But MR DWI demonstrated heterogeneous signal changes in early stage of hepatic cirrhosis in the test group. No significant change of ADC values was found in the control group between different weeks (P > 0.05). The ADC values of the test group declined from the fifth week, and after the tenth week the ADC values were significantly different between the test and control groups at gradient factor (b) value 300 sec/mm(2) (P < 0.05). At b value 600 and 1000 sec/mm(2), significant difference was seen between the two groups from the sixth week onward. The range of ADC value of the groups was (1.7 - 0.9) +/- (0.40 - 0.04) mm(2)/sec (b = 600) and (1.38 - 0.75) +/- (0.07 - 0.35) mm(2)/sec (b = 1000), respectively. Dominant pathological changes included swelled hepatocytes within 1 to 4 weeks after the administration of diethylnitrosamine in the test group, hyperplasia of fibrous tissues in 5 - 8 weeks and formation of cirrhotic nodules in 9 - 12 weeks.

CONCLUSIONSMR functional DWI could detect diffuse liver lesions earlier than conventional morphological imaging. ADC value as a marker for early diagnosis of diffuse liver lesions could also be used to inspect changes of the lesions.

Animals ; Diffusion ; Diffusion Magnetic Resonance Imaging ; Liver Diseases ; diagnosis ; pathology ; Male ; Rats ; Rats, Wistar

OBJECTIVETo study the clinicopathologic features of lipomatosis of nerve (NLS).

METHODSThe clinical, radiologic and pathologic features were analyzed in 15 cases of NLS.

RESULTSThere were a total of 10 males and 5 females. The age of patients ranged from 4 to 42 years (mean age = 22.4 years). Eleven cases were located in the upper limbs and 4 cases in the lower limbs. The median nerve was the most common involved nerve. The patients typically presented before 30 years of age (often at birth or in early childhood) with a soft and slowly enlarging mass in the limb, with or without accompanying motor and sensory deficits. Some cases also had macrodactyly and carpal tunnel syndrome. MRI showed the presence of fatty tissue between nerve fascicles, resembling coaxial cable in axial plane and assuming a spaghetti-like appearance in coronal plane. On gross examination, the affected nerve was markedly increased in length and diameter. It consisted of a diffusely enlarged greyish-yellow lobulated fusiform beaded mass within the epineural sheath. Histologically, the epineurium was infiltrated by fibrofatty tissue which separated, surrounded and compressed the usually normal-appearing nerve fascicles, resulting in perineural septation of nerve fascicles and microfascicle formation. The infiltration sometimes resulted in concentric arrangement of perineural cells and pseudo-onion bulb-like hypertrophic changes. The perineurial cells might proliferate, with thickening of collagen fibers, degeneration and atrophic changes of nerve bundles. Immunohistochemical study showed that the nerve fibers expressed S-100 protein, neurofilament and CD56 (weak). The endothelial cells and dendritic fibers were highlighted by CD34. The intravascular smooth muscle cells were positive for muscle-specific actin.

CONCLUSIONSNLS is a rare benign soft tissue tumor of peripheral nerve. The MRI findings are characteristic. A definitive diagnosis can be made with histologic examination of tissue biopsy.

Adolescent ; Adult ; Antigens, CD34 ; metabolism ; CD56 Antigen ; metabolism ; Carpal Tunnel Syndrome ; complications ; pathology ; Child ; Child, Preschool ; Diagnosis, Differential ; Extremities ; innervation ; Female ; Hand Deformities, Congenital ; complications ; pathology ; Humans ; Lipoma ; pathology ; Lipomatosis ; complications ; diagnosis ; metabolism ; pathology ; surgery ; Magnetic Resonance Imaging ; Male ; Median Nerve ; metabolism ; pathology ; Nerve Sheath Neoplasms ; pathology ; Neurofibroma ; pathology ; Neurofilament Proteins ; metabolism ; Neuroma ; pathology ; Peripheral Nervous System Diseases ; complications ; diagnosis ; metabolism ; pathology ; surgery ; Peripheral Nervous System Neoplasms ; pathology ; Retrospective Studies ; S100 Proteins ; metabolism ; Vimentin ; metabolism ; Young Adult

To characterize the background current in fetal human nasopharyngeal epithelial cells and clarify its relationship with volume activated Cl(-) currents (I(Cl,vol)), whole-cell patch clamp and cell imaging techniques were employed. Under isotonic conditions, a background current [(5.9+/-2.1) pA/pF at +80 mV, n=21] was detected. The current presented a weak outward rectification and a negligible time-dependent inactivation. The current-voltage relationship showed that the reversal potential of the background current [(-0.73+/-1.7) mV, n=21] was close to the calculated equilibrium potential for Cl(-)(-0.9 mV). Application of extracellular hypertonic stimulation (440 mOsmol/L) suppressed the current by (59.6+/-7.1)% and the inhibition was reversible after returned to isotonic conditions. Bathing the cells in hypotonic solution (160 mOsmol/L) induced a volume-sensitive Cl(-) current. The Cl(-) channel blockers, tamoxifen (20 micromol/L) and 5-nitro-2-(3-phenylpropylamino) benzoic acid (NPPB) (100 micromol/L), inhibited the background current by (74.0+/-5.2)% (P<0.01, n=5) and (60.9+/-8.9)% (P<0.01, n=6) at +80 mV and increased basal cell volume by (107.7+/-2.9)% (P<0.01, n=25) and (104.4+/-2.4)% (P<0.01, n=19), respectively. The data indicate that Cl(-) current is an important component of the background current in fetal human nasopharyngeal epithelial cells. The background Cl(-) current is involved in volume activated Cl(-) current and basal cell volume regulation.
Cells, Cultured ; Chloride Channels ; antagonists & inhibitors ; physiology ; Electrophysiology ; Epithelial Cells ; cytology ; metabolism ; physiology ; Fetus ; Humans ; Nasopharynx ; cytology ; Nitrobenzoates ; pharmacology ; Patch-Clamp Techniques ; Tamoxifen ; pharmacology