ObjectiveTo compare therapeutic effects of the bone-guided tissue regeneration in combination with a composite bovine-derived xenograft versus flap surgery only on intra-bony defects in elderly patients with periodontal disease. MethodsThirty elderly patients with periodontal disease were randomly divided into two groups. One group was treated by the bone-guided tissue regeneration in combination with a composite bovine-derived xenograft (experimental group). The other group was treated by flap surgery only (control group). Probing depth (PD)and clinical attachment level (AL) were determined before surgery and six months after treatment in two groups. The change of bone amount was also determined before surgery and six months after treatment through computer-assisted densitometric image analysis(CADIA). ResultsThe changes of PD and CADIA were (3.8+1.7)mm, (20. 3+11.1)g/mm2 in experimental group and were (2.5+1.1)mm, (9.4+8. 6)g/mm2 in control group. The differences between two groups were significant (P.＜0. 05). The change of AL was (3.5+ 1.6)mm in experimental group, compared with control group(2. 3 1.7)mm, which showed more obvious regeneration of alveolar bone (P＜ 0. 01). ConclusionsGuided tissue regeneration in combination with a composite bovine-derived xenograft appears to be more effective than flap surgery only for intra-bony defects in elderly patients with periodontal disease.

Objective: To explore the mediating effects of activities of daily living (ADL) and social interaction on the relationship between intergenerational support and depressive symptoms in the elderly. Methods: Basic information, ADL, social interaction and intergenerational support from children of the elderly aged 60 years and above were collected through the 2020 database of China Health and Retirement Longitudinal Study. Depressive symptoms were evaluated using the Short Version of Center for Epidemiological Studies Depression Scales, and the mediating effects of ADL and social interaction on intergenerational support and depressive symptoms in the elderly was analyzed using Process program. Results: A total of 3 174 individuals were enrolled, including 1 638 males (51.61%) and 1 536 females (48.39%), and 2 264 individuals were aged 60 to <70 years (71.33%). The median score of depressive symptoms was 8 (interquartile range, 13), with 1 346 individuals (42.41%) identified as having depressive symptoms. The median scores of intergenerational support from children, ADL, and social interaction were 2 (interquartile range, 3), 0 (interquartile range, 1) and 3 (interquartile range, 6), respectively. Intergenerational support negatively affected depressive symptoms through the independent mediating effects of ADL (effect value=-0.224, 95%CI: -0.288 to -0.161) and social interaction (effect value=-0.516, 95%CI: -0.807 to -0.228), and negatively affected depressive symptoms via the chain mediating role of ADL and social interaction (effect value=-0.184, 95%CI: -0.237 to -0.134). The total mediating effect value was -0.924, accounting for 46.67% of the total effect. Conclusion Intergenerational support has a negative indirect impact on depressive symptoms in the elderly, mediated through ADL and social interaction.

Objective To analyze the clinical characteristics of children with cyclic vomiting syndrome (CVS), summarize the clinical experience, and improve the awareness,diagnosis and treatment level of CVS.Methods The clinical data and results of long-term follow-up of the children with CVS were collected and analyzed from 1995 to 2009 in our department.Results Forty-six children were enrolled in the study, including 22 boys and 24 girls.Mean onset age was 4.5 years(ranged from 1 to 11 years)and the mean age at final diagnosis was 8.5 years (ranged from 4.5 to 14.5 years).Sixty-six and seventy-four percent of patients had family history of migraine and motional sickness respectively,whereas 83% patients had triggers.The clinical manifestation of CVS was severe episodic vomiting.The episodes had a rapid onset and sudden ending,persisted for several hours to days,and were separated by symptom-free intervals.The incidental symptoms were pallor, lethargy,intractable nausea,abdominal pain,headache,photophobia and dizzy.Twenty-nine patients diagnosed were followed up for 5 years at average.Five patients were treated with valproate,4 with cyproheptadine, 5 with cyproheptadine and valproate,5 with amitriptyline,cyprohep tadine and valproate,and 3 with cyproheptadine and flunarizine.All treated patients recovered mean 10 months(1.5 months to 2 years) years later and displayed the reduced number of episodes or the severity of episodes except 3 patients.Twenty-eight percent (8/29) of patients progressed to migraine headaches.Conclusion CVS is a relatively common disease in children and awareness of the condition should be increased.CVS should be considered when patients had recurrent vomitting and were completely healthy between the two episodes after excluding other pathological conditions.

OBJECTIVE: To explore the clinical application of gastric pharyngeal anastomosis assisted by laparoscope. METHOD: Apply laparoscope in the gastric pharyngeal anastomosis for 4 cases of advanced hypopharyngeal carcinoma and cervical esophageal carcinoma patients. RESULT: Gastric pharyngeal anastomosis assisted by laparoscope were successfully completed in all 4 patients, all patients avoided thoracotomy or laparotomy, one patient occurred pharyngeal fistula, and died six months later. One patient had cervical lymph node metastasis a year and a half later, without treatment again because of economicissue. The remaining two patients were still alive, one patient had survived 3 years and a half after operation, the other had survived 2 years and a half after operation. CONCLUSION Gastric pharyngeal anastomosis assisted by laparoscope is feasible. It can reduce the operation wound, improve the safety of operation and patients' life quality.
Anastomosis, Surgical ; Esophageal Neoplasms ; surgery ; Fistula ; pathology ; Humans ; Hypopharyngeal Neoplasms ; surgery ; Laparoscopy ; Lymphatic Metastasis ; Neck ; Pharynx ; pathology ; surgery ; Survival Rate

OBJECTIVE: To establish a method for the content determination of domiphen by potassium chromate indicator method.METHODS: The contents of domiphen were determined based on the theory that bromide ion in domiphon could react with AgNO3 to produce silver bromide precipitation.The method was compared with the sodium tetraphenylborate method issued in China Pharmacopeica(2005 edition).RESULTS: The RSD of contents was 0.18%,and the average recovery was 100.2% in the potassium chromate indicator method.There was no significant difference between the results of two determination methods by t-test.CONCLUSION: The potassium chromate indicator method is simple,fast and accurate,which can be used for the content determination of domiphen.

BACKGROUND:The position of median and radial nerves corresponding to elbow is usual y estimated by macroscopical measurements, but there are big data errors when the elbow is bent. OBJECTIVE:To measure and analyze the impacts of elbows in different positions on median and radial nerves under X-ray. METHODS:Ten fresh frozen upper limb specimens were selected. The distance of median and radial nerves to the osseous marks inside the elbow was measured when the elbow was in extension, extension-half pronation, bent at flexion 90 degrees and bent at 90 degrees with the injection of normal saline into the joint capsule, respectively. RESULTS AND CONCLUSION:The positions of median and radial nerves were not influenced when the elbow was in extension or in extension-half pronation (P>0.05). The distance of median and radial nerves to the osseous mark of the elbow was significantly lengthened when the elbow was moved from from extension to was bent at 90 degrees (P<0.05). The intra-articular injection of normal saline when the elbow flexion 90 degrees significantly elongated the distance of median and radial nerves to the osseous mark of elbow (P<0.05). These results suggest that the elbow in different positions can induce the displacement of median and radial nerves. In addition, the distance between median, radial nerves and the osseous marks of the elbow is obviously lengthened when the elbow is in flexion with intra-articular injection of normal saline.

BACKGROUND:Human umbilical cord blood-derived mesenchymal stem cels can be induced through the co-culture to differentiate into other cels, but how to get more seed cels for tissue engineering is one of the most difficult problems. OBJECTIVE: To investigate the role of the different concentrations of thyroxine in chondrogenic differentiation of human umbilical cord blood-derived mesenchymal stem cels by co-culture with rabbit chondrocytes. METHODS:Human umbilical cord blood-derived mesenchymal stem cels were co-cultured with rabbit chondrocytes at 2:1, and stimulated by medium containing different concentrations of thyroxine (0, 0.01, 0.1 and 1, 10 μmol/L). Co-cultured cels with no thyroxine served as control group. After 14 days of co-culture, the cel RNA and protein were extracted, mRNA expressions of aggrecan and colagen type II were detected by real-time PCR, and protein expression of aggrecan and colagen type II were detected by western blot assay. RESULTS AND CONCLUSION:After intervention with 0.01, 0.1, 1, 10 μmol/L thyroxine, the mRNA and protein expressions of aggrecan and colagen type II were enhanced with the increase of thyroxine concentration, which were significantly different from those in the control group (P < 0.05). Experimental findings indicate that high levels of thyroxine can enhance the chondrogenic ability of human umbilical cord blood-derived mesenchymal stem cels co-cultured with rabbit chondrocytes.

Objective To study the clinical effect of Zhuang medicine line point moxibustion in the treatment of psoriasis vulgaris.Methods 60 psoriasis vulgaris patients qualified subjects were randomly divided into observation group and control group.The control group was given routine treatment of psoriasis.The treatment group was given Zhuang medicine line points on the basis of the control group.The patients in two groups were treated for four courses.The clinical efficacy of the two groups were compared,and the changes of PASI score and DLQL score at different time periods were compared.Results The total effective rate of treatment group was 76.7%,which was higher than 50.0% in the control group (χ2 =3.125,P<0.05).After 2,3 and 4 courses of treatment,the PASI scores and DLQL scores between the observation group and the control group at the same time point had statistically significant differences (all P<0.05).Conclusion In this study,the use of Zhuang medicine line point moxibustion treatment for psoriasis vulgaris patients has significant curative effect,which can be used as the treatment for psoriasis vulgaris.

OBJECTIVE: To study the inhibitory effects of traditional chinese medicine Compound Liuyuexue (CLYX) on hepatitis B surface antigen(DHBsAg) and hepatitis B e-antigen(DHBeAg).METHODS: One-day old guangxi brown spotted ducks infected with DHBV were used as the hepatitis B virus infected animal model. Positive ducks were detected by PCR at 13 days after the infection of DHBV, and were randomly divided into five groups: the high dose group, middle dose group and low dose group of Compound Liuyuexue(CLYX), model group, and positive control group, with 10 ducks in each group. CLYX was given ig.for 14 days. Serum sampling was scheduled at 0, 7, 14 days respectively and 3 days after drug withdrawal, and the contents of DHBsAg and DHBeAg in serum were measured by ELISA. RESULTS: The serum DHBsAg and DHBeAg contents in high dose and middle dose groups of CLYX were decreased significantly(P

Objective To investigate the relationship between serum homocysteine (HCY)levels and oxidative stress in pa-tients with coronary heart disease (CHD).Methods According to the diagnostic criteria of CHD in 2010 (WS 319-2010)is-sued by the Ministry of Health,79 patients with CHD in Xi’an Central Hospital from June 2014 to December 2014 were se-lected as the experimental group,and 5 5 cases of healthy physical examination for the same period were selected as the nor-mal control group.The levels of oxidative stress marker malondialdehyde (MDA)and the activity of antioxidant enzyme su-peroxide dismutase (SOD)in serum were detected to analyze the state of oxidative stress.The levels of serum HCY were de-tected,and the correlation between HCY levels and MDA levels and SOD activity was analyzed.Results The levels of MDA in the CHD group were significantly higher than that in the control group,while SOD activity was significantly lower than that in the control group,the differences were statistically significant (t=3.112,2.684,all P<0.05).The levels of HCY in the CHD group were significantly higher than that in the control group,the difference was statistically significant (t=3.268,P<0.05).In the CHD group,the levels of HCY were positively correlated with the levels of MDA (r=0.236,P<0.05),and negatively correlated with SOD activity (r=-0.221,P<0.05).Conclusion Serum HCY levels were increased and oxidative stress reaction was enhanced in patients with CHD.Oxidative stress was associated with elevated serum HCY levels.Serum HCY levels and oxidative stress played an important role in the occurrence and development of CHD.