OBJECTIVE: To evaluate the efficiency of autologous conchal cartlage in ossicular chain reconstruction in patients with chronic suppurative otitis media. METHOD: Seventy-three cases of chronic suppurative otitis media (COM) with or without cholesteatoma who had undergone mastoidectomy with tympanoplasty and ossicular chain reconstruction(OCR) using autologous conchal cartilage as prosthesis were studied retrospectively. Sixty-six cases of COM who had undergone mastoidectomy with tympanoplasty and without OCR were studied as control. The examination of pure tone hearing level of air conduction(AC) and bone conduction(BC) was done before operation, 2 months and 6 months after operation respectively. The pure tone average (PTA) of 0.5, 1.0, 2.0 kHz was observed. RESULT: The average air conduction gain was more than 15dB or the PTA (AC) was less than 25 dB 2 months after operation in 35 out of 73 cases who had undergone OCR. Nevertheless, the data became 56 out of 73 cases 6 months after operation. In the control group, The average air conduction gain was more than 15dB or the PTA(AC) was less than 25 dB 2 months after operation in 10 out of 66 cases who had not undergone OCR. The data became 14 out of 66 cases 6 months after operation. In OCR group, air bone gap(ABG) was less than 20 dB in 39 cases 2 months after operation and in 57 cases 6 months after operation. In the control group without OCR, ABG was less than 20 dB only in 11 cases 2 months after operation and in 16 cases 6 months after operation. By statistically analysis, there was significant difference of postoperative hearing improvement between the two groups. CONCLUSION The autologous conchal cartilage can be used as the material of prosthesis for ossicular chain reconstruction in the operation of chronic otitis media. It has many advantages, such as easily--obtained, good histocompatibility, easy to shape and so on.
Audiometry, Pure-Tone ; Bone Conduction ; Cartilage ; transplantation ; Cholesteatoma ; surgery ; Chronic Disease ; Ear Auricle ; Hearing ; Humans ; Mastoid ; surgery ; Ossicular Prosthesis ; Ossicular Replacement ; Otitis Media, Suppurative ; surgery ; Postoperative Period ; Reconstructive Surgical Procedures ; Retrospective Studies ; Treatment Outcome ; Tympanoplasty

Objective To evaluate the relationship between dyslipidemia and abdominal aortic aneurysm (AAA), with which as a theory base and proof we may further study about the mechanism of atherosclerosis (AS) leading to AAA. Methods Thirty abdominal aortic aneurysm patients in Guangdong General Hospital from 2013 to 2014 were enrolled into the experimental group and 26 healthy people into the control group. The serum levels of total cholesterol (TC), triglyceride (TG), high density lipoprotein (HDL), low density lipoprotein (LDL), lipoprotein a (Lpa), nonestesterified fatty acid (NEFA), homocysteine (HCY), apolipoprotein A (ApoA) and apolipoprotein B(ApoB)were tested in the study. The statistical significance of the difference of them was examined by the independent two-sample t-test. Result The serum TG and HCY level in the experimental group were significantly higher than those in the control group (P<0.05). The serum ApoA and HDL level in the experimental group were significantly lower than those in the control group (P<0.05). The serum levels of TC, LDL, Lpa, NEFA and Apo B had no significant difference in both groups (P > 0.05). Conclusion The serum levels of TG and HCY are increased and the levels of Apo A and HDL are decreased in patients with AAA.

Objective The automated capillary zone electrophoresis (CE) is used for human serum protein analysis and compared with the results of agarose gel electrophoresis (AGE) for human serum protein analysis.Discuss its′ practical application in clinical.Methods With the Capillarys ?1-?2+reagent set, proteins in serum were separated at 7 kV for 4 min in 15.5 cm?25.0 ?m fused-silica capillaries (n=8) at 35.5℃ in a pH 10 buffer with online detection 200 nm.Results Capillary zone electrophoresis compared with agarose gel electrophoresis(AGE;Hydrasys-Hyry; Hydragel protein(e)15/30/54 reagent set;Sebia)in precision, relatives, linearity and potential interferences were analyzed.A samples without Para-protein (n=165) were performed relation test. The coefficient of relation between CE and AGE is 0.929 for albumin, 0.924 for for ?1-globulin, 0.841 for ?2-globulin, 0.789 for ?-globulin, 0.926 for ?-globulin. There was no significant difference (P

Pulmonary hypoplasia (PH) may lead to severe respiratory distress immediately after birth,even neonatal death. The etiological factors, clinical, ultrasonic and pathologic characteristics of PH and the proposed methods for the prenatal diagnosis were reviewed in this article.

Objective To evaluate the feasibility and efficacy of twin grasper combined with endoloops on closing acute stomach perforation.Methods Two experimental porcines of stomach perforation underwent endoscopic closure by twin grasper combined with endoloops.Survival conditions and closure of perforating were observed.Results Mild infection and abdominal adhesions were observed in one week after operation.The nylon rope fell off and an ulcer-like lesion was presented in the closed position.The methylene blue leak test was negative.Histologic examination revealed chronic inflammatory cells infiltration,granulation,fibroplasias,and regenerative mucous membrane crawling toward the center of perforation.Conclusion The technique of twin grasper combined with nylon ropes in closing the acute stomach perforation is feasible and effective.

Objective To study the calculational method for the radiotherapy facilities of the medical linear accelerator' s useful beam towars its maze.Methods The shielding calculation was made under the relevant national standards for a radiotherapy treatment room and compared with the test results.Results The dose rates at the maze entrance as calculated and measured were 89 and 86 μSv/h inside the maze door,as well as 5.7 and 6.2 μSv/h outside the maze door,respectively.The calculated results were consistent with measured results.Conclusions By comparison of calculated results with measured results,the accuracy of the theoretical calculation method could be verified.

Objective To establish a scientific and practical principle , grading standard and reasonable statistical method for evaluating the protective effect of health food to gastric mucosal injury , based on general pathology and histopathological diagnosis .Methods A methodological study was conducted on rat model of acute gastric mucosa injury induced by alcoholic through comprehensive analysis and comparing shortcomings of the current standard evaluation method, and methods of semi-quantitative analysis and corresponding information statistic processing were based on characteristics of the lesion and principles of pathology .Results Gross pathological evaluation of gastric mucosa lesion was based on the area occupied and proportion in the whole gastric mucosa .Histopathological diagnosis was based on the mucous layer depth of lesion as main determination point and other lesions as reference factors .Grades of lesion were divided into no abnormality (0), mild lesions (1 point), moderate lesions (2 points), and severe lesions (3 points). Ridit statistical method was used for pathological analysis of semi-quantitative results .Conclusion A scientific and feasible evaluation method for the protective effect of health food to gastric mucosal injury was provided from the aspects of gross pathology , histopathological evaluation method , data processing method and result determination .

Objective To study the dynamic changes of plasma C-reactive protein (CRP) and cortisol (COR) and their clinical value in prognosis of patients with sepsis. Methods Daily CRP and COR detection was conducted to record the dynamic changes of CRP and COR for cases of sepsis patients in ICU then the rela-tionship between dynamic changes of serum CRP and COR and prognosis were analyzed. Results Serum CRP and COR levels of dead patients were significantly higher than those of survival patients after treatment (P <0.05). According to the difference of the dynamic changes of CRP and COR, the data were divided into typeⅠ:sustained elevated type , typeⅡ: up-and-down type , type Ⅲ: fluctuated type and type Ⅳ: normal or mild ele-vation type. The mortality of CRP typeⅠ patients was significantly higher than that of type Ⅱ and type Ⅳ(P <0.001). The mortality of COR typeⅠ and COR Ⅲ patients was significantly higher than that in COR Ⅱand COR Ⅳ (P < 0.001). Further analysis showed that the mortality of group with significant elevation of CRP and COR were obviously higher than that of group with significant increase of CRP or COR and that of group with no significant elevation of CRP and COR (P < 0.001); the mortality of group with significant increase of CRP or COR was also significantly higher than that of group with no significant elevation of CRP and COR (P < 0.001). Conclusions The dynamic changes of COR and CRP in patients with sepsis present certain regularity and monitor-ing the dynamic changes of the two provides accurate assessment of the prognosis of sepsis.

Objective To prepare a conjugate vaccine by linking Haemophilus influenzae type b (Hib)polysaccharide to PsaA protein carrier and evaluate the immunogenicity and efficacy of the conjugate vaccine. Methods A recombinant protein rPsaA,expressed by using the genetic engineering technology, was used as a protein carrier to prepare conjugate vaccine together with Hib polysaccharide. Ten mice at age of 3 weeks were immunized with the conjugate vaccine,while another 10 age-matched mice were immunized with Hib-tetanus toxoid(Hib-TT)vaccine which was produced formerly as a control. The mice treated with equal volume of PBS were set up as the negative control. The IgG antibodies in serum samples against PsaA and Hib polysaccharide were detected in two weeks after the final immunization. A suspension of Pneumococ-cus was injected into the middle ears of mice from experiment and control group. Histopathological analysis was performed to measure the clearance of bacteria in the middle ears and the severity of infection on days 3 and 7 after bacterial challenge. Results The rPsaA protein was prepared by the genetic engineering tech-nology and purified successfully with anion-exchange column. The Hib polysaccharide-PsaA protein conju-gate vaccine was prepared through a series of amide condensation reactions. The detection of IgG antibodies against PsaA protein and Hib polysaccharide in the immunized mice demonstrated that there was no signifi-cant difference with the titer of IgG against Hib polysaccharide between the mice immunized with the Hib-PsaA conjugate vaccine and those immunized with the Hib-TT vaccine. Less Pneumococcus strains were de-tected in the middle ears of mice immunized with the conjugate vaccine than those mice immunized with the Hib-TT vaccine three days after challenge. The mice from control group showed severe inflammation in the middle ears than those from experiment group. The Hib polysaccharide-PsaA protein conjugate vaccine im-proved protection against Pneumococcus infections as compared with the Hib-TT vaccine. Conclusion The rPsaA protein could be produced by genetic engineering technology and purified by anion-exchange column. The Hib polysaccharide was successfully conjugated with the rPsaA protein through amide condensation reac-tion. Both anti-PsaA and anti-Hib immune responses were induced in young mice by the injection of Hib pol-ysaccharide-PsaA protein conjugate vaccine. Apart from providing protection against Hib infection,the con-jugate vaccine might also be used for the prevention of acute otitis media caused by Pneumococcus infection.

Dental Implantation, Endosseous ; Dental Implants ; Humans ; Maxilla ; Tissue Engineering