ObjectiveTo explore the inhibitory effects of r-k4k5 on retinal neovascularization.MethodsEighty-eight one-week-old C57BL/6J mice were put into the environment with 75% oxygen for 5 days to establish models of vascular proliferation retinopathy. One eye of each mouse received an intravitreal injection of 500 ng of r-k4k5 (large-dosage group) and of 250 ng of r-k4k5(small-dosage group), and the same volume of BSS was injected into the other eye of the mice both in these two groups as a control. The ADPase histochemical staining was used for retinal flatmount to observe changes of retinal vessels. The inhibitory effects of r-k4k5 on retinal neovascularization were evaluated by counting the endotheliocyte nuclei of new vessels extending from retina to vitreous in the tissue-slice.ResultsRegular distributions and reduced density of retinal blood vessels in eyes in the treatment group were found in retinal flatmount. The number of the endotheliocyte nuclei of new vessels extending from retina to vitreous was less in the eyes in the treatment group than which in control group (P

Objective To evaluate the efficacy and safety of telbivudine for pregnant women with hepatitis Be antigen (HBeAg)negative chronic hepatitis B(CHB). Methods Sixty-two cases of HBeAg negative CHB pregnant women were collected from May 2007 to May 2012,and they were divided into telbivudine group (n=31 ,600 mg per day by oral administration)and compound glycyrrhizin group (n=31 ,120 mg per day by intravenous administration).All neonates were given intramuscular injection of 200 IU hepatitis Bimmune globalin at birth immediately and 15 days after birth,and 20 μg genetically engineered hepatitis B vaccine at 0,1 and 6 months after birth.The serum alanine aminotransferase (ALT)level and hepatitis B virus (HBV)DNA titer were monitored.The HBV DNA negative conversion rate,the rate of intrauterine infection,duration of pregnancy,delivery mode,neonate weight and disability rate were compared between groups.All categorical data were analyzed using the chi-square test and comparison between groups was analyzed by t test.Results In telbivudine group,the HBV DNA level before delivery ([0.20±0.11]lg copy/mL)and 6 weeks after delivery ([0.22±0.13]lg copy/mL) were lower than that before treatment [(6.24±0.75 )lg copy/mL]and the differences were statistically significant (t=303.128 and 301 .321 ,respectively;both P <0.01).The negative conversion rate of HBV DNA in telbivudine group was 28 cases before delivery,while in compound glycyrrhizin group,no one had HBV DNA negative conversion.And statistical significant differences were achieved between these two groups before delivery and 6 weeks after delivery (t = -20.285 and -8.721 ,respectively;both P <0.01).In telbivudine group,the ALT levels before delivery and 6 weeks after delivery were (13.08±5.87) U/L and (25.97 ± 17.48)U/L,respectively,which were significantly decreased compared with that before treatment (205.95± 95.69 )U/L.The differences were statistically significant (t = 93.128 and 81.321, respectively;both P <0.01).In compound glycyrrhizin group,the ALT level before delivery ([104.15 ± 69.15]U/L)was lower than that before treatment ([209.60 ± 102.24]U/L)and the difference was statistically significant (t = 9.281 ,P =0.032).However,the ALT level was fluctuant 6 weeks after delivery (150.26± 86.43)U/L,which was not significantly different from that before treatment (t =2.821 ,P =0.122).The ALT levels before delivery and 6 month after delivery were significantly different in both two groups (t=-2.559 and -3.158,respectively;both P <0.05 ).There were no statistically significant differences between these two groups in the rate of intrauterine infection, duration of pregnancy,delivery mode,neonate weight and disability rate.Conclusion The using of telbivudine for pregnant women with HBeAg negative CHB can effectively control the hepatitis activation and reduce the virus titer.

Diagnostic criteria, as a critical component of clinical practice guidelines, play a direct role in guiding clinicians' diagnostic and treatment decisions. Although China has increasingly emphasized the development and updating of clinical guidelines in recent years, research focusing on the diagnostic criteria within these guidelines remains limited. This paper aims to explore the types of diagnostic criteria, the issues they present, and the processes involved in their formulation. Based on this analysis, suggestions are proposed to improve the recommendation and application of diagnostic criteria in Chinese guidelines.

Objective To evaluate the effectiveness and safety of varicella attenuated live vaccine ( VarV) produced by A Co. Ltd. Methods We selected 3 provinces in China and enrolled 15 002 children aged 3-<11 in this random, multicenter study. Participants were randomly divided into two groups: the ex-perimental group and the control group. Every varicella case was collected and recorded to calculate the vac-cine efficacy. Vaccine safety was assessed by means of spontaneous report and regular follow-up visits. Re-sults During the observation period, the incidence of varicella was 0. 147% in the experimental group and 1. 155% in the control group (P<0. 001). The vaccine efficacy was 87. 27%. The adverse reaction rate af-ter vaccination was lower than the rates reported in other literatures. Conclusion The VarV produced by A Co. , Ltd. in China was effective and safe in preventing varicella.

Objective:To systematically evaluate the efficacy of epidermal growth factor receptor tyrosine kinase inhibitor (EGFR-TKI) combined with radiotherapy in the treatment of lung adenocarcinoma with central nervous system (CNS) metastasis.Methods:PubMed, EMBASE, Medline, Cochrane Library, clinical trials and other databases were searched to collect the clinical control studies of EGFR-TKI combined with radiotherapy versus EGFR-TKI or radiotherapy alone in the treatment of lung adenocarcinoma with CNS metastasis published at home and abroad from January 2012 to April 2019. After evaluating the data, Revman 5.3 software was used for meta-analysis.Results:10 studies involving 1 379 participants were included. The results indicated that compared with EGFR-TKI or radiotherapy alone, EGFR-TKI plus radiotherapy had a significant benefit on overall response rate (ORR) [ OR: 3.81, 95% CI(1.73, 8.39); P<0.01], overall survival (OS) [ HR: 0.60, 95% CI(0.41, 0.89); P=0.01], neurological progression free survival (nPFS) [ HR: 0.65, 95% CI(0.46, 0.91); P=0.01] compared with EGFR-TKI or radiotherapy alone. Conclusions:EGFR-TKI plus radiotherapy had better ORR, OS, nPFS compared with TKI or radiotherapy alone.

Objective To study the clinical characteristics of syndrome types of laryngeal cough ,in order to provide an epidemiology basis for classification diagnosis. Methods Medical history,clinical signs and symp-toms of patients with laryngeal cough were collected. And questionnaire survey was carried out. Results (1)Of the 4 syndrome types,compared with wind evil invading lung type laryngeal cough incidence,the insecure defen-sive exterior and intrinsic special type showed no statistical difference(P>0.05). And the comparative differences between the rest 2 groups are of statistical differences(P < 0.05).(2)The onset time was analyzed. The results show laryngeal cough incidence from yin deficiency type and fire hyperactivity type showed no statistical difference (P > 0.05). The rest are all of statistical difference(P < 0.05).(3)The clinical course was analyzed. No differ-ence was found between spleen deficient phlegm type ,yin deficiency and fire hyperactivity type laryngeal cough (P>0.05). Differences of the rest 2 groups showed statistical difference(P<0.05).(4)The state of illness was analyzed. The results showed statistical difference between spleen phlegm type and yin deficiency and fire hyperac-tivity type(P<0.05). No statistical difference can be found between the rest 2 groups(P>0.05).(5)The cross-tab chi-square test was carried out on the 4 groups of syndromes on the nasal allergy eye and allergy concomitant incidence. The results showed that there was no significant difference between the 4 groups(P>0.05).(6)On the phlegm part,the results showed difference between wind evil invading lung type and yin deficiency and fire hyper- activity type laryngeal cough(P>0.05). Differences between the rest 2 groups are of statistical significance(P<0.05).(7)Foreign body sensation was analyzed. The results showed no difference between insecure defensive exte-rior and intrinsic special type and wind evil invading lung type ,deficient spleen phlegm type and yin deficiency and fire hyperactivity type(P>0.05). Differences between the rest 2 groups are all of statistical significance(P<0.05). Conclusions The 4 groups of syndrome types,insecure defensive exterior and intrinsic special type and wind evil invading lung type are the most common. Deficient spleen phlegm type is middle ,yin deficiency and fire hyperactivity type come next. Cough caused by wind invading lung mainly occurs in the evening. Its duration is usually within 1 month. It may be accompanied by phlegm with or without occasional pharyngeal paraesthesia. The daily life is usually unaffected or slightly affected. Cough caused by deficiency of vital energy and specific intrinsic quality mainly occurs in the morning. Its duration is usually 3 months to 1 year. It may be accompanied by less phlegm or no phlegm without or with occasional pharyngeal paraesthesia. The daily life is unaffected or slightly affected. Cough caused by Yin deficiency and fire hyperactivity occurs from time to time. It duration is more than 1 year. It may be accompanied by phlegm with pharyngeal paraesthesia. The daily life is unaffected or seriously affected. Cough caused by spleen deficiency and phlegm turbidity mainly occurs in the morning. Its duration is more than 1 year. It may be accompanied by more phlegm with pharyngeal paraesthesia. The daily life is seriously affected.

OBJECTIVE: To establish a method for measuring the photoelectric performance index (luminance response characteristic and luminance tolerance) of medical electronic endoscope. METHODS: Based on the clinical application and product features of medical electronic endoscope, the umbrella grayscale test chart and the adjustable gray scale test chart are designed and made from two aspects of distribution and density differential. RESULTS: The influence of gray scale arrangement, background illumination intensity and illumination spectrum on photoelectric performance measurement of electronic endoscope is verified by test. CONCLUSIONS It is a reference for the design analysis, evaluation and modification of electronic endoscope product photoelectric part, whether it is suitable for fast detection of umbels and more accurate gray scale test chart.
Electronics, Medical ; Endoscopes ; Light ; Quality Control

Objective:To investigate the correlation between serum calcitonin gene-related peptide (CGRP) and the culture outcome of in vitro fertilization embryo in male patients with infertility.Methods:In this study, the randomized samples from 25 male patients who received in vitro fertilization-embryo transfer (IVF-ET) in the 1st Affiliated Hospital of Fujian Medical University from June 2019 to October 2019 were analyzed by multiple linear stepwise regression, with some important clinical outcomes, such as the logarithmic conversion index of serum CGRP, fertilization method, masturbation difficulty, age, infertility duration, and prolactin, as independent variables, while total fertilization rate, normal fertilization rate, high quality embryo rate at day 3, blastocyst formation rate as dependent variables.Results:The Pearson correlation analysis showed that the D3 high-quality embryo rate was related to the normal sperm morphology rate in the primary infertility group ( r=0.537, P=0.048), the blastocyst formation rate was correlated with sperm density ( r=0.760, P=0.002), the CGRP logarithm was correlated with the total fertilization rate ( r=0.693, P=0.006). The logarithmic conversion index of serum CGRP was related to the total fertilization rate and normal fertilization rate in the secondary infertility group ( r=0.614, P=0.042 and r=0.611, P=0.046). In the secondary infertility group, there was a linear relationship between normal fertilization rate and total sperm count, serum CGRP log conversion, and sperm normal morphology rate, with standardized regression coefficients of 0.2, -0.729, and 6.8, respectively. Conclusion:Serum CGRP level, together with total sperm count and normal sperm morphology rate may affects normal fertilization rate in male patients with infertility.

Diabetes mellitus is a metabolic disease characterized by chronic hyperglycemia caused by absolute or relative insufficiency of insulin secretion. As the disease progresses， patients begin to suffer from diabetic nephropathy， diabetic cardiomyopathy， non-alcoholic fatty liver disease or other complications， which increase the burden on the patients. Moreover， the number of patients is increasing， which brings a heavy burden to the society. Ferroptosis is a new type of programmed cell death which has attracted wide attention in recent years. It refers to the cell death caused by the excessive accumulation of lipid peroxide under the overload of iron ions. Studies have discovered that ferroptosis exists in diabetes mellitus and its complications. Inhibiting ferroptosis can greatly slow down the occurrence and progression of diabetes mellitus and its complications. Chinese medicine， the unique medical treasure in China， acts in a multi-pathway， multi-target manner and is praised for the cheap price， low toxicity， and mild side effects. It has been widely used in the treatment of diabetes mellitus and its complications and has demonstrated definite therapeutic effects， bringing the good news for the majority of patients. The regulation of ferroptosis by Chinese medicine may be a new direction for the treatment of diabetes mellitus and its complications in the future. This paper briefly describes the mechanism of ferroptosis， explores the relationship of ferroptosis with diabetes mellitus and its complications， summarizes the research status of Chinese medicine interventions， and puts forward suggestions， aiming to provide a reference for further research on the treatment of diabetes mellitus and its complications with Chinese medicine.

Objective:To analyze measurement results of serum allergen-specific immunoglobulin E (IgE) in patients with eczema/dermatitis.Methods:A retrospective analysis was conducted on serum allergen-specific immunoglobulin E (IgE) levels in 3 051 patients with eczema/dermatitis, who visited the allergy clinic of Huashan Hospital from April 1, 2021 to March 31, 2022. The serum allergen-specific IgE level was detected by using the Phadia allergen detection system, and positive rates of allergens were calculated to determine common inhaled allergens and food allergens in patients with eczema/dermatitis. Comparisons of enumeration data between groups were performed by chi-square test.Results:Among the 3 051 patients with eczema/dermatitis, there were 1 412 with atopic dermatitis and 1 639 were other eczema/dermatitis. Detection of serum allergen-specific IgE showed that 1 629 (53%) patients were positive for allergens, and the number of positive allergen-specific IgEs in each patient was 3.0 ± 1.6. The top 3 common inhaled allergens in patients with eczema/dermatitis were Dermatophagoides farinae (904/1 522, 59%) , Dermatophagoides pteronyssinus (891/1 513, 59%) and Alternaria alternata (206/1 068, 19%) , and the top 3 common food allergens were shrimps (251/1 432, 18%) , egg white (165/992, 17%) and cow milk (149/994, 15%) . Among the 3 051 patients, 25 (1%) were aged < 2 years, 571 (19%) aged 2 - 12 years, 285 (9%) aged 12 - 18 years, and 2 170 (71%) were aged > 18 years. The most common food allergens were both egg white in the age groups of < 2 years and 2 -12 years (77%, 37%, respectively) , and were both shrimps in the age groups of 12 - 18 years and > 18 years (31%, 17%, respectively) . Dermatophagoides pteronyssinus and Dermatophagoides farina were the top 2 common inhaled allergens in all age groups, with the positive rate ranging from 36% to 84%; in addition, the positive rate of molds was relatively high in the age group of 2 - 12 years (mold mixture: 37%; Alternaria alternata: 27%) . From April 2021 to March 2022, the positive rate of outdoor allergens ranged from 10% to 15% among outpatients in every month; the positive rates of tree pollen and grass pollen increased from April 2021, and peaked in October 2021. The patients with atopic dermatitis showed a significantly increased positive rate of allergens (73%) compared with those with other eczema/dermatitis (37%, χ2 = 389.36, P<0.001) , and the rank of common allergens in the patients with atopic dermatitis was basically the same as that in those with eczema/dermatitis. Conclusions:The common allergens were Dermatophagoides farina, Dermatophagoides pteronyssinus and Alternaria alternata in the patients with eczema/dermatitis. Food allergy was more common in infant patients, and inhalation allergy was more common in child, adolescent and adult patients. The positive rate of allergen-specific IgEs was markedly higher in the patients with atopic dermatitis than in those with other eczema/dermatitis.