To discuss the effective method of decreasing the postoperative recurrence rate of recurrent pterygium.
●METHODS:Totally 126 cases (126 eyes) with recurrent pterygium were randomly divided into A group (56 cases) and B group ( 70 cases ). Group A was treated by pterygium conjunctive reverse transplantation combined with amniotic membrane transplantation, group B was treated by amniotic membrane transplantation. The followed-up time after surgery was 6-24mo.
●RESULTS:ln group A, postoperative 5-7d (average 5. 62± 1. 38d), cornea epithelium was repaired. ln group B, postoperative 7- 10d ( average 7. 38 ± 1. 12d), the corneal wound was healed. There was statistical significant difference between two groups (t = 4. 307,P<0. 05). Three cases recurrence were noted in A therapeutic group (56 cases), the recurrent rate was 5. 4%; Twelve cases recurrence were noted in B compared group (70 cases), the recurrent rate was 17. 1%. There was statistical significant difference between two groups(P<0. 05).
●CONCLUSlON: lt is suggested that pterygium conjunctive reverse transplantation combined with amniotic membrane transplantation is effective in the treatment of recurrent pterygium.

Objective To discuss the high-risk human papillomavirus (HPV )infection in the Guangxi .Methods A total of 26 796 copies of the test results for female cervical secretions specimens were analyzed retrospectively from what the second-genera-tion hybrid capture technology mixed detect 13 kinds of high-risk HPV viral DNA .Results Infection rate was 17 .94% in Guangxi , and the infection of HPV in north was higher than other regions ,and the differences of regions had statistically significant (P<0 .05) .The peak age of infection in the Guangxi region was less than 20 years old ,50- <60 years old ,and equal or more than 60 years old .The differences among age groups was statistically significant(P<0 .05) .Patients constitute HPV infection Guangxi re-gion had high viral load for 40 .93% ,and high viral load constituent ratio rise with age .Conclusion The existence of high-risk HPV infection is regional different and age different in the Guangxi region ,to high-prone areas ,infection high age should focus on monito-ring ,high viral load in patients with complete cervical cytology and histology examination if necessary .

Female ; Hepatitis B ; complications ; Humans ; Liver Cirrhosis ; complications ; Mesenteric Veins ; Middle Aged ; Venous Thrombosis ; complications

OBJECTIVEThis study aimed to investigate the mechanism of primary cortical neuron injury induced by high concentrations of copper by observing the effect of aceticum culture medium on apoptosis of rat primary cortical neurons and expression of cleaved caspase 3, caspase 8 and caspase 9.

METHODSPrimary cortical neurons were cultured for 72 hrs and then exposed to different concentrations of aceticum culture medium (20, 40 and 80 microM). The viability of neurons was detected by the MTT method. Apoptosis was observed by Hoechst33258 and flow cytometry Annexin V/PI. Expression of caspase 3, caspase 8 and caspase 9 was measured by Western blot.

RESULTSFollowing incubation with aceticum culture medium, apoptosis of neurons was induced. Theviability of neurons was remarkably reduced and the rate of apoptosis was tremendously increased in a concentration dependent manner. Caspase 8 and caspase 9 were activated in 20 microM of copper aceticum culture medium 4 hrs after incubation and peaked at 48 hrs in various concentrations of copper aceticum culture medium, presenting with a time and concentration dependent manner. The activated caspase 3 was observed in 20 microM of copper aceticum culture medium 24 hrs after incubation, which was later than the activated caspase 8 and caspase 9. Caspase 3 expression reached a peak 48 hrs in various concentrations of copper aceticum culture medium, presenting with a time and concentration dependent manner.

CONCLUSIONSThe apoptosis of primary cortical neurons can be induced by copper. Caspase 3, caspase 8 and caspase 9 cascade reaction may involve in the apoptosis of copper induced rat primary cortical neurons.

Animals ; Apoptosis ; drug effects ; Blotting, Western ; Caspase 3 ; physiology ; Caspase 8 ; physiology ; Caspase 9 ; physiology ; Cell Survival ; drug effects ; Cells, Cultured ; Cerebral Cortex ; drug effects ; Copper ; toxicity ; Rats ; Rats, Sprague-Dawley

Objective To evaluate the prevalence and prognosis of hepatitis E virus ( HEV) su- perinfection in patients with chronic hepatitis B ( CHB) ． Methods Electronic databases of Pubmed， CNKI，and Wanfang were searched，and references of the relevant articles for literatures associated with HEV superinfection in CHB patients in China published during 2008－2019 were screened． Studies which met the inclusion and exclusion criterias were selected and related data were pooled for analysis． The Ｒ 3. 5. 2 and Ｒevman 5. 3 were used to measure heterogeneity with the I2 statistic and pooled incidence and odds ratio ( OＲ) ． Ｒesults 28 literatures were eligible for inclusion． The results showed the rate of HEV superinfection in hospitalized CHB ( CHB-HEV) patients was 13. 6% ( 95%CI: 12. 5% －14. 9%) ． The pooled incidence of liver failure in CHB-HEV patients was 34. 7% ( 95%CI: 29. 6%－40. 1%) ，which was higher than CHB patients ( OＲ= 10. 9，95%CI: 6. 8－17. 4) ，CHB patients superinfected with hepatitis A virus ( CHB-HAV) ( OＲ= 3. 8，95%CI: 2. 4－6. 2) ，and hepatitis E patients ( OＲ= 5. 1，95%CI: 3. 8－ 6. 8) ． The pooled mortality of CHB-HEV patients was 13. 8% ( 95%CI: 10. 3－17. 8) ，which was higher than CHB patients ( OＲ = 8. 5，95%CI: 4. 0－18. 3) ，CHB-HAV patients ( OＲ = 14. 4，95%CI: 4. 8－ 42. 9) ，and hepatitis E patients ( OＲ= 4. 4，95%CI: 3. 0－6. 4) ． Conclusion In China，HEV sueperinfection on chronic hepatitis B patients are common，and is an important cause of liver failure and death．

Objective:To observe the efficacy and safety of ultra photon intense pulsed light combined with hydroquinone cream for the treatment of chloasma.Methods:From January 2020 to October 2022, a total of 30 patients with chloasma treated in the Department of Dermatology, Huazhong University of Science and Technology Union Shenzhen Hospital, ranged from 28 to 54 years old with an average age of 39 years, were randomly divided into three groups with 10 patients in each group: combined treatment group was treated with ultra photon intense pulsed light combined with hydroquinone cream; ultra photon intense pulsed light group was treated with ultra photon intense pulsed light alone; hydroquinone group was treated with hydroquinone cream alone. The efficacy and safety of the three groups were compared after four months of treatment.Results:After the treatment, 10 cases were effective in the combined treatment group, 5 cases were effective in the ultra photon intense pulsed light group and 2 cases were effective in the hydroquinone group. The total effective rate of the combined treatment group was significantly better than that of the ultra photon intense pulsed light group and the hydroquinone group, with statistical significance ( P<0.05). The average melasma area severity index score of the three groups after treatment was significantly decreased compared with that before treatment respectively ( P<0.05), and the average melasma area severity index score of the combined treatment group after treatment was significantly lower than that of hydroquinone group, with statistical significance ( P<0.05). No serious adverse reactions were observed in all the patients. Conclusions:Ultra photon intense pulsed light and hydroquinone cream can improve chloasma alone, but ultra photon intense pulsed light combined with hydroquinone cream has better therapeutic effect.

Objective To investigate copper-induced apoptosis of primary cultured rat cortical neurons and the protective effect of thioredoxin,an apoptosis signal regulated kinase-1(ASK1)inhibitor,and explore the role of ASK1-mediated c-Jun N-terminal kinase(JNK)/caspase-3 signaling pathway in the neurotoxicity of copper.Methods The changes in the viability and apoptosis of primary cultured rat neurons following exposure to cupric acetate and thoredoxin were assessed using MTT assay and flow cytometry.Western blotting was used to detect the expressions of phosphorylated ASK1(p-ASK1),p-JNKand caspase-3 in the exposed cells.Results Administration of cupric acetate in the cell culture resulted in a concentration-dependent increase of cell apoptosis and a reduction of the viability of the neurons,and the effect was antagonized by thoredoxin.The expression of p-ASK1 and p-JNK began to increase in the neurons at 4h after cupric acetate exposure,and reached the peak level at 48h,showing a time-and concentration-dependent pattern of the changes.Activated caspase-3 was expressed at 24h after the exposure,and the peak expression occurred at 48h.The application of thoredoxin significantly lowered the expressions of p-ASK1,p-JNK and caspase-3,and increased the viability and reduced the apoptotic rate in the exposed neurons(P＜0.05).Conclusions Copper can induce apoptosis of primary cultured rat cortical neurons,in which process ASK1-mediated JNK/caspase-3 signaling pathway may play a critical role.Thoredoxin can protect the cortical neurons from injuries induced by the copper.

OBJECTIVETo measure lutein, zeaxanthin and β-carotene level in foods commonly consumed in Beijing, and compare the content difference between raw and cooked food.

METHODSForty-six commonly consumed foods of 8 classes were collected in Haidian district of Beijing from September to October in 2009. A high performance liquid chromatography method was used to determine the content of lutein, zeaxanthin and β-carotene in both raw and cooked samples.

RESULTSLutein was abundant in cucurbitaceous and solanaceous, allium and nuts, especially in Chinese chive (18 226.9 µg/100 g) and pumpkin (13 265.2 µg/100 g). Major sources of zeaxanthin included round pumpkin, green garlic shoot, corn and eggs, whose level of zeaxanthin were 444.6, 283.5, 279.7, 118.6 - 377.9 µg/100 g, respectively. Zeaxanthin level of those cooked foods changed to 483.9, 239.3, 279.1, 149.5 - 594.7 µg/100 g, respectively. The zeaxanthin level of cooked Chinese chive reached 1081.2 µg/100 g, while we did not detect any zeaxanthin in raw Chinese chive. β-carotene was present in a wide variety of vegetables and fruits. Carrot (17 234.3 µg/100 g) was a good source of β-carotene, while its level in cooked carrot was 17 013.5 µg/100 g.

CONCLUSIONConsuming the proper kinds of foods and changing the method of food processing were beneficial to increase the intake of lutein, zeaxanthin and β-carotene.

China ; Cooking ; Food ; Food Analysis ; Lutein ; analysis ; Xanthophylls ; analysis ; Zeaxanthins ; beta Carotene ; analysis

Objective To evaluate the homogeneity of the proficiency test samples to verify whether it meets the requirements of the comparison in international reference laboratory.Methods According to the Guidance on Evaluating the Homogeneity and Stability of Samples Used for Proficiency Testing (CNAS-GL03),14 biochemical indexes including ALT,AST,ALP,GGT,CK,LDH,TP,T-Bil,Urea,Cr,UA,Glu,TG and TC in the past three years (from 2014 to 2016)were tested by the Roche detection system Modular P800 Biochemical analyzer.The mean ((x)),standard deviation (s)and coefficient of variation (CV)of the samples were calculated.One-way analysis of variance (ANOVA)was performed and the guideline of Ss ≤0.3σ was used to evaluate the between-bottle differences.Results The results showed that the CVs of AST in RELA 2014A and B were higher than 2.0％.The CVs of CK were over 2％ in all tests except for RELA 2016B.The results of ANOVA for RELA samples demonstrated that the F value of CK was over the critical value 4.39,which was statistically significant (P ＜ 0.05).The F values of the ALT and T-Bil in 2015B and the Cr in 2014A were also over 4.39 (P ＜ 0.05) respectively,while the F values of other measurements were less than the critical value of F,indicating there was no statistical significance (P ＞ 0.05).The CK measurement data Ss ＞ 0.3σ in all the samples by the guideline of Ss ≤ 0.3σ,suggesting that there was a between-bottle difference in CK.The other indexes were Ss ≤ 0.3σ,showing no between-bottle difference in those items.Conclusion There were significant differences between the bottles of the CK item in the past three years,and the homogeneity of all the other items in the samples could meet the requirements of Proficiency Testing for the international reference laboratory.

OBJECTIVETo establish of acute respiratory distress syndrome (ARDS) model in canine after inhalation of perfluoroisobutylene (PFIB), and to observe the progressing of lung injury, and to study the mechanisms of injury.

METHODSA device of inhalation of PFIB for canine was made. The concentration of PFIB was 0.30 - 0.32 mg/L. Serum IL-6 and IL-8 were dynamically measured. Clinical manifestations, pathology of organs in canine were observed.

RESULTS(1) During inhalation, the concentration of PFIB remained stable; (2) After inhalation, blood arterial oxygen partial pressure fell gradually, and eventually met the criteria for diagnosing ARDS; (3) The level of IL-8 in serum rises significantly after inhalation (P < 0.05), whereas that of IL-6 was not obviously altered (P > 0.05); (4) Within 6 hours after inhalation, no abnormality in canine was observed, but afterwards symptoms gradually appeared, and typical breath of ARDS, such as high frequency and lower level could be seen in later phase; (5) Pathological examination showed severe congestion, edema and atelectasis in most part of both lungs, and signs of anoxia in other organs.

CONCLUSIONS(1) The device designed is capable of ensuring control of inhalation of PFIB; (2) Exposure to PFIB for 30 mins, canines all met the criteria for diagnosing ARDS 22 hours after inhalation, therefore the modeling is successful; (3) PFIB specifically damages the lung by causing excessive inflammation.

Administration, Inhalation ; Animals ; Disease Models, Animal ; Dogs ; Female ; Fluorocarbons ; toxicity ; Interleukin-6 ; blood ; Interleukin-8 ; blood ; Lung ; drug effects ; pathology ; Male ; Random Allocation ; Respiratory Distress Syndrome, Adult ; blood ; chemically induced