ObjectiveTo prepare a novel etimicin-encapsuled chitosan/hydroxyapatite nano-scaffolds and offer assistances for bone defect or osteomylitis.MethodsDrug-carried chitosan nanoparticles which was prepared by ionotropic gelation were combined with nano-hydroxyapatite.The mixture were shaped in molds and then prepared into porous scaffolds by freeze-dry.The surface of one scaffold was scanned.The grinded,particles of the scaffold were detected by field emission scanning electron microscope; X-ray diffraction was used to analyze components of the scaffold and total porosity.Staphylococcus aureus was choosed as the experimental bacteria,we studied lasting antibacterial property of drug-carried bone scaffold by antibacterial experiments,long-term drug releasing experiments and accumulation drug releasing experiments.Bone mesenchymal stem cells were used to detect the histocompatibility and inductivity of etimicin-carried scaffold.ResultsFreeze-dried porous scaffold has a surface with proper pore distribution (total porosity 70.68％) and the grinded scaffold has a globular and coliformed microstructure known after scanned by electron microscope.The drug-carried scaffold has a typical wave of hydroxyapatite under X-ray diffraction.The lasting antibacterial property study indicated that the drug-carried bone scaffold had maintained an inhibition zone for more than 7 days.The long-term drug releasing experiments and accumulation drug releasing experiments show that the fictional drug-carried bone scaffold released above the bacteriostasis concentration after one week and the accumulative amount within the safety scale.The scaffold had not an inhibitory effect on bone mesenchymal stem cells.ConclusionThe etimicin-encapsuled chitosar/ hydroxyapatite nano-scaffolds has similar microstructure and components of bone tissue.It is promising in bone tissue engineering applications because of its slow-release,antibacterial properties and satisfactory histocompatibility.

Adolescent ; Adrenalectomy ; adverse effects ; methods ; Adult ; Aged ; Female ; Follow-Up Studies ; Humans ; Laparoscopy ; adverse effects ; methods ; Male ; Middle Aged

Objective:To conduct a systematic study of the immunologic response of rats to transplanted glutaraldehyde ( GA)-treated porcine blood vessels in vivo.Methods: The experiment was divided into two groups:fresh group and glutaraldehyde-treated group.Twenty cases of fresh and glutaraldehyde-treated porcine pulmonary arteries were subcutaneously embedded in rats.We compared the changes using HE staining and immunohistochemistry.Results:HE staining showed that there were stronger expression on day 12 and day 30 in the fresh group than that in the glutaraldehyde group.There were similar results in morphology in CD68,C3,IgG.The results of integral optical density ( IOD) in immunohistochemistry showed that IOD started rising from day 4 and got the peak on day 12 or day 30 and or fell on day 60.Conclusion: Innate immunity played an important role in the research on xenogenic immunological rejection mechanism.The immunogenicity of glutaraldehyde-treated xenogenic blood vessels is lower than that in fresh blood vessels.However there is still immunogenicity in glutaraldehyde-treated xenogenic blood vessels.We will explore better ways to obviously weaken the rejection.

OBJECTIVEErectile dysfunction-no sexual life (ED-NS) is defined as the inability to have enough penile erection hardness and duration so as to have enough confidence in attempting sexual intercourse for more than six months. This study was to investigate the effect of daily low-dose tadalafil on ED-NS.

METHODSWe treated 35 ED-NS patients aged 17-35 (25.9 +/- 3.9) years with oral tadalafil at 5 mg qd for 3 months and followed them up for another 3 months after drug withdrawal. We obtained the scores of the patients on Self-estimation Index of Erectile Function-No Sexual Life (SIEF-NS) and compared them before and after medication and at 3 months after drug withdrawal.

RESULTSThe patients' SIEF-NS scores were 43.2 +/- 7.1 after medication and 42.1 +/- 7.4 at 3 months after drug withdrawal, both significantly higher than 21.2 +/- 5.9 before treatment (P < 0.05), though there was no significant difference between the former two scores (P > 0.05).

CONCLUSIONDaily medication of low-dose tadalafil can significantly improve the erectile function of the patients with ED-NS.

Adolescent ; Adult ; Carbolines ; administration & dosage ; therapeutic use ; Erectile Dysfunction ; drug therapy ; psychology ; Humans ; Male ; Sexual Behavior ; Tadalafil ; Treatment Outcome ; Young Adult

OBJECTIVETo observe the proliferation changes of the side population of gastric cancer cell line SGC-7901 cells (SP), the non-side population (NSP) cells, and unsorted cells (Total) after intervened by Sijunzi Decoction (SD) containing serum.

METHODSSixteen pure bred New Zealand rabbits were equally divided into the normal control group, the low dose SD group (at the daily dose of 7 mL/kg), the middle dose SD group (at the daily dose of 14 mL/kg), and the high dose SD group (at the daily dose of 28 mL/kg) according to the random digit table. Rabbits' serum was extracted after equal volume of corresponding medication was given by gastrogavage twice daily for 2 consecutive weeks. The drug serum was identified using high performance liquid chromatography. SP cells of SGC-7901 were detected using flow cytometry, SP and NSP cells were screened. The proliferation curve of SP, NSP, and Total cells were detected with CCK-8 assay. Changes of their proliferation were also observed.

RESULTSGinsenoside Rg1, an effective ingredient in SD was detected in prepared drug serum. The proliferation of SGC-7901 SP cells was significantly higher than that of NSP cells and Total cells (P < 0.05). Drug serum on gastric cancer cell line SGC-7901 SP, NSP, and Total cells could inhibit their proliferation, but its inhibition on SP cells' proliferation was significantly lower than on NSP and Total cells (P < 0.05).

CONCLUSIONSSD could significantly inhibit the proliferation of gastric cancer cell line SGC-7901 SP, NSP, and Total cells. But there exist obvious difference in the inhibition among the three groups.

Animals ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Drugs, Chinese Herbal ; pharmacology ; Humans ; Rabbits ; Side-Population Cells ; drug effects ; pathology ; Stomach Neoplasms ; pathology

Objective To evaluate the clinical features and the strategy for the diagnosis and treat- ment of bilateral testicular tumor.Methods The clinical data (including the signs and symptoms,imaging studies,tumor markers,treatment modalities and histopatbologic diagnoses) of 10 cases of bilateral testicular tumor from January 1980 to December 2004 were reviewed.Their age ranged from 19 to 58 years(mean,34 years).Of the 10 cases,8 with metachronous and 2 with synchronous testicular tumors were identified.The clinical stages at the primary and secondary tumor diagnosis were:5 cases of stageⅠ,3 of stageⅡ;and 6 cases of stageⅠ,1 of stageⅡ,and 1 of stageⅢ,respectively,in 8 metachronous tumor patients.Two syn- chronous tumor patients were both identified as stageⅠdisease.Histological examination showed the primary tumor (seminoma) in 4 cases and the secondary contralateral tumor (seminoma) in 3.Results Two syn- chronous tumor patients underwent bilateral radical orchiectomy simultaneously,and 8 underwent orchiectomy successively.Retroperitoneal lymph node dissection was performed in 3 cases.Postoperatively,hypogonadism occurred in 10 patients,and 7 of them received androgen replacement therapy.Follow-up ranged from 9 month to 23 years with a mean of 10.5 years.Two patients died of the disease;2 had metastasis (1 of them was alive with metastasis);2 had recurrences and underwent local resection.Conclusions Metachronous bilateral testicular cancers are more common than synchronous bilateral testicular cancers.Seminoma was the most common histopathologic type.Testis-sparing surgery can be performed in selected cases.

Adult ; Ankylosis ; diagnostic imaging ; etiology ; pathology ; physiopathology ; Hip ; diagnostic imaging ; pathology ; physiopathology ; Humans ; Male ; Ossification, Heterotopic ; complications ; Paraplegia ; complications ; Tomography, X-Ray Computed

Objective To characterize the biological characteristics of natural vectors of Yesinia (Y.) pestis in China.Methods Species and genera of natural vectors of Y.pestis in China and their faunal distribution were characterized with modem insect taxonomic techniques.The ecological roles of natural vectors of Y.pestis in natural plague foci were determined according to insect ecological experiments.Results There were 63 species of natural vectors of Y.pestis including 28 major reservoirs and 35 secondary ones.Conclusion The biology characteristics of major vectors on Y.pestis and their roles in natural plague foci were defined.

OBJECTIVETo investigate the experience on diagnosis and treatment of multiple adrenal aldosterone-producing adenomas (APA).

METHODSEighteen cases of multiple adrenal APA were analyzed retrospectively, which were admitted from October 1992 to April 2006.

RESULTSAdrenalectomy was performed for 4 cases of unilateral synchronous multiple APA, which were discovered with three adenomas by 3D-CT; bilateral tumor resection was performed for 6 cases of bilateral synchronous multiple APA. There were 8 cases of bilateral metachronous multiple APA, including 2 cases of ipsilateral recurrent adrenal APA after adrenal tumor removal, which underwent tumor resection. Another 6 cases were contralateral APA following adrenalectomy due to adrenal APA, and underwent tumor resection. After operation, the adrenal function seemed to be normal, and no recurrence had been found on follow-up.

CONCLUSIONSUnilateral multiple synchronous APA require adrenalectomy. Tumor resection should be performed for bilateral or asynchronous APA, and it is very important to preserve healthy adrenal tissue as much as possible. 3D-CT has much value on diagnosis of small APA, unilateral multiple synchronous APA and ipsilateral recurrent adrenal APA.

Adenoma ; complications ; diagnosis ; surgery ; Adrenal Gland Neoplasms ; complications ; diagnosis ; surgery ; Adrenalectomy ; Adult ; Aldosterone ; blood ; Female ; Follow-Up Studies ; Humans ; Hyperaldosteronism ; blood ; etiology ; Male ; Middle Aged ; Retrospective Studies ; Tomography, X-Ray Computed

Adolescent ; Adult ; Aged ; Child ; Female ; Humans ; Influenza A Virus, H1N1 Subtype ; Influenza, Human ; complications ; pathology ; physiopathology ; Liver ; pathology ; physiopathology ; Male ; Middle Aged ; Retrospective Studies ; Young Adult