Objective To investigate the effect of two kinds of injected biomaterial combined with bone morphological protein (BMP) on tendon-to-bone healing after anterior cruciate ligament reconstruction (ACL) in rabbits. Methods ACL reconstruction was performed bilaterally in 50 skeletally mature rabbits using long digital extensor tendon grafts. Injected fibrin glue (FG) or injected calcium phosphate cements (CPC) combined with BMP were implanted into the treated knee of each rabbit,with the contralateral knees as controls. Every three rabbits were killed at 2,6 and 12 weeks postoperatively for routine histological studies. The samples were processed through Micro CT and subsequent HE and toludine blue staining. The remaining 16 rabbits were sacrificed at 6 and 12 weeks. Their femur-tendon graft-tibia complexes were harvested for subsequent mechanical testing. Results Imageological results showed that 6 weeks after operation,bone mineral density (BMD) values in FG-bBMP group were higher than those in CPC-bBMP group. However,12 weeks after operation,BMD values in CPC-bBMP group were the highest in the three groups. Histological findings of the interface between the tendon and bone differed in the three groups. Two weeks after operation,more chondrocyte-like cells that were fairly disorganized were noted between the tendon and bone in FG-bBMP group. Six weeks after operation,mature bone formation around the tendon was observed in FG-bBMP group while more immature bone ingrew toward implanted tendon in CPC-bBMP group; at 12 weeks,more chondrocyte cells and new bone formation were seen in CPC-bBMP group while a small quantity of mature bone was around tendon in FG-bBMP group. In biomechanical evaluation,the maximum pull-out load of the tendon from the bone tunnel was significantly higher in the two treatment groups than in the control group 6 and 12 weeks after operation (P

The development of the argentaffin cell of the human gastro-intestinal tract is studied in 31 embryos and foetuses at closely graded stages of development. These cells are first seen in the epithelium of the duodenum at 47mm stage, but they do not assume their typical morphology. There are only a few argyrophile granule present around their nucleus. At the 89.3 mm stage the argentaffin cells appear in various parts of gastrointestinal tract and assume the typical morphology of infranuclear distribution of granules.The argentaffin cells assume various forms in sections: round, squamous, columnar, spindle, pyramidal, hammer-like, and flask-shaped. In gastric mucosa they are small, squamous or pyramical cells. They lie on the basal lamina with their apical ends not reaching to the stomach cavity. In intestine they are large columnar, spindle, pyramidal or flask-shaped cells. Their apical ends reach the luman. Sometimes their basal pole may penetrate to the lamina propria. In addition to these cells, in intestine there are also round argentaffin cells lacking luminal contact, with its argentaffin granules scattered here and there all over the cytoplasm. These difference in cell shape, granules distribution and luminal endings are likely related to the functional specialization, of argentaffin cell in different areas.Although most of the argentaffin cells are scattered singly in mucous epithelium, sometimes they may be present by twos and threes, and in appendix, they are often arranged in line. No argentaffin cell can be seen in any other part of the gut. They are differentiated in situ from epithelium. Therefore, we favor the idea that argentaffin cells are endodermal in origin.At the early embryo stage, the argentaffin cells are more numerous in villi, less numerous in intestinal crypt. As the embryo develops, they gradually increase in number both in villi and crypt (glands), but are more numerous in glands. In new born foetus the argentaffin cells are mainly scattered in glands.The argentaffin cells are very numerous in duodenum and particularly in appendix, less in stomach except pylorus. They are not found in esophagus.At various stages of development of the embryo the argentaffin cells are quite different in number. At the beginning, they are scarce. Following the development of embryos, their numbers increase rapidly and reach their maximum number at 21 weeks, 22 weeks and 23 weeks of age respectively. Thereafter the argentaffin cells decrease in number gradually, but they are still present at new born foetus.

OBJECTIVE:To investigate the characteristics and regularity of ADR in secondary-level hospitals and above in Xi’an in order to provide reference for clinical drug use. METHODS:During Oct. 2012-Jun. 2014,1 372 ADR cases reported in 36 hospitals at secondary-level or above in Xi’an were analyzed retrospectively. RESULTS:Among 1 372 cases of ADR reports,the incidence of ADR in the above 60 age group occupied the highest percentage,being 29.67%(407 cases);ADR reports were most likely caused by antibacterial drugs,accounting for 45.77%,followed by TCM injections(15.82%)and circulatory system drugs(9.55%);the largest number of ADR reports was caused by injections(1 210 cases,88.19%);the main types of ADR were lesion of skin and its appen-dents,accounting for 44.16%. The most number of ADR was induced by Levofloxacin injection,involving 95 cases. CONCLU-SIONS:Mastering the characteristics and regularity of ADR help managers to standardize clinical rational drug use and ensure patients’ medication safety.

Objective To investigate the inhibition effects of different antihistamines on the expressions of chemokines and cytokines released by nasal polyps in vitro.Methods The fresh nasal polyps resected under endoscope from the patients admitted to our hospital were cultured with mizolastine,cetirizine,loratadine,fexofenadine,dexamethasone,or ciclosporin A respectively for 24 h,with the addition of histamine and arachidonic acid.The total RNA of polyps was obtained and purified with tripure isolation reagent.The mRNA expression levels of monocyte chemoattractant protein-1(MCP-1),monocyte chemoattractant protein-3(MCP-3),regulated on activation,normal T cell expressed and secreted(RANTES),eotaxin were analyzed by RT-PCR.The concentrations of interleukin(IL)-4,IL-5 and tumor necrosis factor-?(TNF-?)in cultured supernatant was detected by ELISA.Results The MCP-1 mRNA expression in nasal polyps treated by mizolastine was weaker than those by loratadine and fexofenadine;the MCP-3 mRNA expression by mizolastine was weaker than those by cetirizine and loratadine;the RANTES mRNA expression by mizolastine was weaker than those by loratadine and fexofenadine;the eotaxin mRNA expression by mizolastine was weaker than that by cetirizine(all P

Objective To investigate serum indicators of liver fibrosis in patients with chronic hepatitis in liver fibrosis diagnostic significance.Methods determination of serum HA,LN,PCⅢ,ⅣC was condueted by RIA technology in 100 cases of chonic hepatitis and 40 cases of healthy people,the difference of the findings was in two groups coup ared.Results There was signifieunt difference in terms of serum HA,LN,PCⅢ,ⅣC among normal control,moderafe hepatitis,sever hepatitis and cirrhosis group(P0.05).There was significant difference in ferms of serum HA,LN,PCⅢ,ⅣC among cirrhosis and mild,moderate,serere hepatitis as well as healthy control group(P

Objective:To use computer technology for large medical equipment quality management.Methods: The quality management mode of the existing large medical equipment and means of analysis, combined with the work practice, learn from developed countries in Europe and America advanced method of large medical equipment management, and extract the key elements of quality management, and the formation of information management of design documents and procedures.Results: A set of used in quality management of large medical equipment information system, including the elements of quality management, quality management evaluation and related benefit analysis.Conclusion: by means of information used for quality management of large medical equipment, effectively regulate the quality management system of large-scale medical equipment, to enhance the quality and safety of controllability, protect the patient's life security, but also conforms to the future development direction of quality management, to satisfy the competent departments, medical institutions and patients in many aspects such as quality safety requirements for large medical equipment.

Objective To discuss the ultrasonic anatomy of gastrocnemius and its substructures in normal population. Methods Eighty gastrocnemius in 40 volunteers were scanned by real time high frequency ultrasound. Sonograms of medial and lateral heads of gastrocnemius were acquired. Plume angles between medial and lateral heads of gastrocnemius were measured at condition of rest, 5 kg and 10 kg isometric contraction. Both dominant and non-dominant legs were evaluated. Differences of plume angles were compared by ANOVA in different conditions and by t test in different legs. Results At the upper part of the muscle, both medial and lateral heads of gastrocnemius could be divided into muscular compartment, shallow compartment and deep compartment by hyperechoic intra-muscular septa with clear margin. The septa of lateral heads presented as hyperechoic side-lying′T′, while the septa of medial heads presented as hyperechoic side-lying-′T′. Vascular signals could be detected in these hyperechoic septa. The plume angle at the distal part of the lateral head of gastrocnemius was composed of shallow compartment attaching to the Achilles tendon, and that of the medial head was composed of medial muscular compartment attaching to the tendon. At rest, 5 kg and 10 kg isometric contraction, plume angles of lateral heads were (13.36±3.20)°, (13.32±3.30)° and (12.75±3.20)°, and plume angles of medial heads were (8.69±3.30)°, (8.59±2.99)° and (8.65±3.20)°. Under the same condition, plume angles of medial heads were larger than those of lateral heads and the difference was statistically signiifcant (t=9.09, 9.50 and 8.10, all P<0.01). Changes of plume angles between rest and different weight bearing conditions were small, and differences were not statistically signiifcant (F=0.89 and 0.02, P=0.41 and 0.98). Plume angles of medial heads in dominant legs and non-dominant legs were (13.66±3.60)° and (13.30±2.84)°, and those of lateral heads were (8.71±3.48)° and (8.80±3.35)°. The plume angles of medial heads were larger in dominant legs than those in non-dominant legs, while the plume angles of lateral heads were smaller in dominant legs than those in non-dominant legs. However, both differences were not statistically signiifcant (t=0.70 and 0.87, P=0.48 and 0.17). Conclusions The anatomical characteristics of medial and lateral heads and compartments of gastrocnemius can be clearly depicted by high frequency ultrasound. Plume angles can also be accurately measured.

Objective Selecting doxorubicin and tetrandrine as model drug to prepare complex liposomes, study the methods of preparation, and research its release property in vitro. Methods The formulation of tetrandrine-doxorubicin complex liposomes was optimized by three different kinds of methods. And the optimum formula was selected through the orthogonal test according to the entrapment efficiency. Results Tetrandrine-doxorubicin complex liposomes were prepared by (NH4)2SO4-gradient method combined with pH gradient method. One optimum recipe was founded that tetrandrine-doxorubicin complex liposomes/ egg phosphatidyl choline was 1∶20, egg phosphatidyl choline/cholesterol was 3∶1, pH value was 7.6, incubation temperature was 50 ℃, concentration of (NH4)2SO4 was 250 mmol/L. The doxorubicin completely released within 24 h, and the tetrandrine released within 16 h. Conclusion Tetrandrine-doxorubicin complex liposomes have high entrapment efficiency with fine-looking, which is better for the further studies

The process of lung cancer invasion and metastasis consists of a complex series of multigene and multistep, CD44V6 is a broadly distributed transmembrane glycoprotein, which mainly participates in the specific adhesion process and plays an important role in cell-cell and cell-matrix interactions.The researches showed that the high expression of CD44V6 was helpful for metastasis ability of tumor cell. MMps is a groups of metal hydronium depend-proteinase, it exhibits proteolytic activity against components of the extracellular matrix (ECM). The recent study indicated that MMps has been played important roles not only in degradation of ECM proteins, but also in the regulation of tumorigenesis. Combined with two marker might be an important significant to judge prognosis ,metastasis and development.

Recently, the incidence of both diabetes mellitus and diabetic foot has been increasing.Ischemia, neuropathy, and infection are major causes of diabetic foot ulcer. In addition to other conventional treatments, hyperbaric oxygen is an effective adjunctive therapy with less side-effects. Hyperbaric oxygen may play a role through different mechanisms in improving the prognosis of diabetic foot.