Objective To study the changes of the rat's hearing threshold by long-term treatment with Vitamin-C and the reason of the changes. Methods Forty-two Wistar rats were randomly divided into two groups: the treatment group was treated with water added Vit-C and the placebo group was treated with drinking water.(1)Concentrations of malondialolehyde(MDA)of the cochlea with fluorescence chromatometry.(2) Auditory sensibilities with auditory brainstem response testing.(3) The frequency of the mtDNA~(4834)bp deletion in the cochlea with polymerase chain reaction technique. Results Hearing threshold of both groups become worse with aging,and the treatment group showed the better auditory sensitivities,the less concentrations of MDA and the less frequency of mtDNA~(4834)bp deletion compare with the placebo group. Conclusions Long-term treatment with Vitamin-C could reduce the degree of hearing loss of the rats and the concentrations of MDA of the cochlea and the frequency of mtDNA~(4834)bp deletion in the cochlea.The oxygen radicals theory should be the etiology of presbyacusis.

Objective To explore the principles and methods of surgcal treatment for acute neoplastic colorectal obstruction.Methods The clinical data of 103 patients diagnosed as acute neoplastic colorectal obstruction were analyzed retrospectively.Results In this group,80 cases underwent emergency surgical treatment,(among) which,25 cases of carcinoma of right colon underwent primary resection and anastomosis;in 45 cases of carcinoma of left colon,primary resection and anastomosis was performed in 37 cases;and emergent(operations) were performed in 10 cases of rectal cancer.23 cases received non-emergency surgery.(Anastomotic) fistula occurred in 3 patients,pulmonary infection in 2 patients,pelvic cavity infection in 1(patient),1 patient died and the rest recovered well and were discharged.Conclusions The initial treatment for acute neoplastic colorectal obstruction should be non-surgcal treatment for 1~3d to make non-emergency surgical treatment more possible.If indications are properly selected,primary tumor resection and anastomosis is safe.For patients with severe contamination of abdominal cavity and bowel perforation, primary tumor(resection) should be performed if possible.

AIM: To study the effects of Ginseng fiber on hepatic fibrosis induced by CCl 4 in mice. METHODS: Forty PCR Mice were randomly divided into 4 the control group, the NS group, the colchicine group and the Ginseng fiber groups. Rats in control group were treated by daily oral gavage with vehicle. Rats in other three groups were given SC injection of 40% CCl 4 10 ml?kg -1 and treated by either daily oral gavage with vehicle, or colchicine at 0.1 ml?kg -1, or Ginseng fiber at 10 g?kg -1 for 42 d. The liver injury indexes were measured. RESULTS: Compared with control group, the serum enzymes of alanine aminotransferase (ALT), aspartic acid aminotransferase(AST) were markedly increased but serum albumin (Alb) and A/G were decreased distinctly in CCl 4 group whose liver slides also showed typical liver cirrhosis. Ginseng fiber markedly prevented CCl 4-induced increases in liver weight, serum ALT and TP. Ginseng fiber lightened the hepatic pathological necrosis resulting from CCl 4. The preventive effect of Ginseng fiber was identical to that of colchicine. CONCLUSION: Ginseng fiber can prevent hepatic fibrosis induced by CCl 4 in mice.

AIM: To observe the changes of bone in female Sprague Dawley rats aged 4.5 and 7.5 months. METHODS: Forty 4 month old virgin female Sprague Dawley rats were randomly divided into 4.5 month group and 7.5 month group. Bone histomorphometric analysis of the proximal tibial metaphysis (PTM), tibial shaft (Tx) and the fifth lumbar vertebral body (LV5) was performed in undecalcified sections. RESULTS: There was no significant change in bone volume of PTM, LV5 and Tx between 4.5 and 7.5 months of age. However, the bone formation parameters (%L.Pm, MAR, BFR/TV, BFR/BV, BFR/BS) of LV5 and Tx fall rapidly between 4.5 and 7.5 months of age. CONCLUSION: There is no significant change in cancellous and cortical bone mass, but the bone formation of LV5 and Tx decreases in female Sprague Dawley rats aged from 4.5 to 7.5 months.

AIM: To study the relationship between hepatic fibrosis and osteoporosis, and observe the preventive effects of ginseng fiber on bone loss. METHODS: Forty PCR mice were randomly divided into 4 groups. The mice in control group were treated by daily oral gavage with vehicle. The mice in other three groups were given SC injection of 40% CCl_4 10 ml?kg -1 and treated by either daily oral gavage with vehicle, colchicine, or ginsen hair for 42 d. The liver injury indexes were measured and the mineral elements and hydroxyproline of femur were determined. RESULTS: Compared with the control group, the serum enzyme activity of alanine aminotransferase (ALT), aspartic acid aminotransferase (AST) markedly increased and serum albumin (Alb) and A/G distinctly decreased in CCl_4 group whose liver slides also showed typical liver cirrhosis. The dried weight of femur markedly reduced and the bone calcium content and bone hydroxyproline content significantly decreased in CCl_4 group. Bone copper and bone magnesium increased in CCl_4 group. Ginseng fiber markedly decreased the serum enzyme activity of ALT and increased the bone calcium content and bone hydroxyproline content. The preventive effects of ginseng fiber was similar to that of colchicine. CONCLUSION: The bone mass is lost in mice with chronic hepatic injury induced by CCl_4. Ginseng fiber can prevent bone loss and hepatic fibrosis induced by CCl_4 in mice.

Objective To screen the indicator system of sub-health.Methods Three rounds delphi consultations were conducted for selected indicators of sub-health.30 experts were selected for the three rounds' consultations.Results The experts who had been invited are from about 10 different majors and have been engaged in their current profession for 21.75 years on average.The enthusiasm coefficient of specialists in pretest and two rounds' formal consultations were 90.00%, 93.33% and 89.29% respectively.The coordination coefficients Kendall' W of the experts' opinion were 0.327,0.185 and 0.249 respectively.The weight of the first grade indexes of the sub-health namely physical, mental and social sub-health indicator dimension were 40.61%, 33.34%and 26.05% respectively.After two rounds' formal consultation,64 assessing indicators were remained in the final.Conclusion It is practical,efficient and successful to use Delphi method in screening indicator system of assessing sub-health.

Objective:To explore the predictive value of fractional excretion of IgG (FE IgG) on drug responsiveness and remission in patients with idiopathic membranous nephropathy (IMN).Methods:Retrospective analysis of 82 patients with IMN diagnosed by clinical and pathological data and regularly followed up from April 2014 to August 2017. Receiver operating characteristic (ROC) curve was used to determine the FE IgG threshold. Comparing the difference of remission time under different baseline levels of FE IgG, and analyzing the effect of different levels of FE IgG on the drug responsiveness of immunosuppressive therapy (tacrolimus or cyclophosphamide) and supportive therapy.Results:Areas under the curve (AUC) of estimated glomerular filtration rate (eGFR), 24-hour urinary protein quantity and FE IgG were 0.509, 0.701 and 0.948, respectively. Before treatment, there was no significant difference in gender, age, mean arterial pressure and eGFR between the high FE IgG group (FE IgG>0.029) and low FE IgG group (FE IgG<0.029) ( P>0.05). The remission time of high FE IgG group was (18.75±6.81)months, while it was (8.46±3.74)months in low FE IgG group, with significant difference ( P<0.01). There was no difference in remission time of immunosuppressive therapy and supportive therapy in low FE IgG group ( P=0.265), bo-th of which were lower than the high-level immunosuppressive therapy group ( P<0.001). The remission time of tacrolimus was shorter than that of cyclophosphamide in high FE IgG group, but with no significant difference ( P=0.131). There was significant difference in the remission time of tacrolimus between the high and low level groups of FE IgG ( P<0.01). Under electron microscope, the ratio of foot process fusion and podocyte diffuse vacuolar degeneration in the high level group of FE IgG was higher than that in the low level group ( P<0.01). Conclusions:FE IgG can be used as a clinical indicator for predicting drug responsiveness and remission in patients with IMN, and is essential for early identification of high-risk patients and for making clinical decisions. Patients with high FE-IgG may benefit from early initiation of immunosuppressive therapy.

Objective: To analyze the clinical characteristics and treatment experience of Vitamin B12 (VB12) deficient patients with recurrent aphthous ulcers (RAU) to improve the clinical efficacy. Methods: A retrospective analysis was performed on 15 cases of recurrent oral ulcers from January 2016 to September 2018. The causes were analyzed according to the patients’ clinical characteristics. Results: In total, 15 patients with RAU had no remission after routine immunotherapy. Further clinical examination suggested that vitamin B12 levels were reduced. The erythrocyte mean corpuscular volume (MCV) was significantly increased, and the average number of red blood cells (RBC) and hemoglobin (Hb) levels were decreased. RAU disappeared after vitamin B12 supplementation. Routine blood work showed that the MCV returned to the normal range, which was statistically significant compared with the pretreatment MCV (P < 0.001). Vitamin B12 serum levels were significantly higher (P < 0.001) than those before treatment. Conclusion When the main manifestation of vitamin B12 deficiency is recurrent oral ulcer symptoms, dentists should examine the lesions carefully, inquire about the medical history in detail, and perform further serological tests when necessary to avoid the overuse of immunosuppressive drugs for treatment.