Objective To explore the positive distribution characteristics and analyse the correlation of common food allergen-specific immunoglobulin E (sIgE) with suspected food allergy in the First Affiliated Hospital of Guangzhou Medical University.Methods Using fluorescence enzyme-linked immunosorbent assay to detect the serum sIgE antibody of 854 patients,including 7 kinds of food allergens (milk,egg white,egg yolk,shrimp,crab,peanut and soybean) from July 2006 to January 2013.Data were processed by statistical software SPSS19.0.Results The positive rates of the 7 kinds of food allergen were 39.3％ (283/720),36.3％ (216/595),9.8％ (28/285),21.2％ (36/170),24.3％ (17/70),14.8％ (9/61) and 10.0％ (5/50).Two hundred and eighty-two patients were detected egg white and egg yolk sIgE,the positive rate of egg white sIgE 59.6％ (168/282) was much higher than the egg yolk sIgE 9.2％ (26/282).The positive rate of the milk and egg white sIgE were different between the age groups and decreased with the age(milk:x2 =792.88;egg white:x2 =658.21,P ＜ 0.01).The degree in level 4 or above of milk and egg white sIgE were 1.08％ (2/186) and 1.12％ (2/178) in positive patients.Five hundred and twenty-eight patients were detected milk and egg white sIgE,26.9％ (142/528) were both positive,sIgE levels in serum of them was moderately correlated (rs =0.758,P ＜ 0.01).Serum sIgE of shrimp and crab was detected in 64 patients,16 cases was positive of the shrimp,17 cases of the crab was positive,both positive in 16 cases,sIgE levels in serum of them were highly correlated (rs =0.973,P ＜0.01).In the simultaneous detection of 34 patients' serum sIgE of peanut and soybean,peanut was positive in 4 cases,soybean was positive in 3 cases,both positive in 2 cases,sIgE levels in serum of them were highly correlated (rs =0.879,P ＜ 0.01).Conclusions Egg white is the major allergen of egg allergy.The correlations of shrimp and crab,peanut and soybean are extremely high,probably because of their homology; egg white and milk are not homologous food,but the levels of sIgE between them display a moderately correlation,indicating the existing of synergistic reaction.

Talent training is the foundation for discipline construction and it is also the fundamental guarantee of hospital's sustainable development.The affiliated Zhongshan hospital of Fudan university launched investigations from the teaching management,teaching staff,resident and clinical skills to look for problems in clinical teaching and to propose improvement measures aiming at improving the clinical teaching and promoting hospital resident and specialists training.

Objective To investigate the role of molecular allergen diagnosis in respiratory allergic diseases, and measure the prevalence and the allergen molecular mapping of the asthma and allergic rhinitic patients.Methods Totally 80 cases of asthma or allergic rhinitis patients with two or more inhaled allergens from First Affiliated Hospital of Guangzhou Medical University during 2013 January to 2014 December were tested for serum specific immunoglobulin E ( sIgE ) against 112 allergen components by ImmunoCAP ISAC.Results About 78.8% ( 63/80 ) patients is three or more allergen components sensitization, the most prevalence allergen components were house dust mites′Der f 1 67.5%(54/80), Der f 2 66.2%(53/80), Der p 1 and Der p 2 were 63.8%(51/80) and 61.2%(49/80), Der p 10 was only 12.5%(10/80), follewed by Fel d 1 22.5%(18/80), Cyn d 1 16.2%(13/80), Phl p 4 15.0%(12/80), Pen m 1,Pla a 2,Jug r 2 and Can f 1were all 11.2%(9/80), Lep d 2, Blo t 5, Bla g 7 and Ani s 3 10.0%(8/80).Other allergen components positive rates were low.Conclusions Molecular allergen diagnosis can provide more comprehensive diagnostic information for allergic patients, by providing allergen map.Allergen microarray can discover the neglected allergens such as bermuda grass, timothy grass and plane tree pollen allergens in southen China.

Objective To investigate the types and distributions of allergens, and the responsiveness to these allergens SIgE and tIgE as related to allergic disorders in patients with allergies in Guangdong. Methods Serum samples were obtained from patients with allergic disorders (n = 7 144) who visited our hospital between 2009 and 2014. The sera were subjected to analysis of 15 common allergens. Results The positive rates of sIgE and tIgE were 62.4%and 54.6%, respectively. Dermatophagoides pteronyssinus(Der p) had the highest prevalence of aeroallergen-specific IgE and milk the highest prevalence of food allergen-specific IgE. Other aeroallergens and food allergens produced mild responses except Der p and Der f. The sensitization peak of Der p and Der f appeared at the age of 10 to 12 years. The sensitization peak of milk appeared at the age of less than 3 years and that of eggs did at the aged of 4 to 6 years. The averaged tIgE positive rate went up with the increase in the number of allergen sensitization. Conclusion Der p, Der f, milk and eggs are major sensitizers responsible for common allergic disorders in Guangdong. Knowledge concerning allergen characteristics at various age groups may be helpful for early diagnosis and intervention for allergies.

Objective To analyse distribution of age and gender characteristics of specific IgG(sIgG)antibodies and specific IgE (sIgE)antibodies of 13 types of food allergens in patients with food anaphylaxis,and to explore the relationship between sIgG and sIgE in food anaphylaxis.Methods 314 cases of patients from 2009 to 2012 were selected as subjects,and divided into underage group(1 63 cases)and adult group(1 5 1 cases).Serum sIgG of 13 types of food allergens were detected by using enzyme linked immu-nosorbent assay,serum sIgE of these food allergens were detected by using immune capture.Results 80.25% of the patients were sIgG-positive,and no obvious gender differences were found;while the positive rates of sIgG in the underage group(94.48%)were higher than that in the adult group(64.90%),there were statistically significant differences(P < 0.05 ).34.39% of the patients were sIgE-positive.The positive rates of sIgE in male patients(40.68%)were higher than that in female patients(26.28%),and that in the underage group(55.21%)were also higher than that in the adults group(1 1.92%),there were statistically significant differences(P <0.05).Conclusion The total positive rates and its distribution characteristics of sIgG and sIgE of same food aller-gens were obviously different.Food anaphylaxis might be associated with age,gender,food types and individual diversity.

Objective:To investigate the expression of solute carrier family 35 member E1 (SLC35E1) and SLC35E2B in skin lesions of patients with Mycobacterium infections. Methods:Paraffin-embedded skin tissues of 31 patients confirmedly diagnosed with Mycobacterium infections were collected from Dermatology Hospital of Southern Medical University from 2014 to 2018, including 10 cases of multibacillary leprosy, 9 of nontuberculous mycobacterial infection, 7 of cutaneous tuberculosis, and 5 of erythema induratum. Meanwhile, paraffin-embedded skin tissues of 10 healthy individuals were collected, and served as normal control group. Immunohistochemical staining was performed to determine the expression of SLC35E1 and SLC35E2B in the lesional and normal control skin specimens, and immunofluorescence staining to observe the co-expression of CD68 and S100 with SLC35E1 and SLC35E2B in the skin lesions. Results:Neither SLC35E1 nor SLC35E2B was expressed in the normal control group, but high expression of SLC35E1 and SLC35E2B was observed in the dermis of skin lesions from the patients with leprosy, nontuberculous mycobacterial infection, cutaneous tuberculosis or erythema induratum. Immunohistochemical staining showed that the expression of SLC35E1 and SLC35E2B (expressed as average optical density) was significantly higher in the multibacillary leprosy group (0.143 ± 0.010, 0.169 ± 0.004, respectively) , nontuberculous mycobacterial infection group (0.278 ± 0.015, 0.229 ± 0.088, respectively) , cutaneous tuberculosis group (0.171 ± 0.010, 0.103 ± 0.016, respectively) and erythema induratum group (0.200 ± 0.015, 0.118 ± 0.021, respectively) than in the normal control group (both 0, all P < 0.05) . Immunofluorescence staining showed co-expression of SLC35E1 and SLC35E2B with CD68 in skin lesions of the patients with leprosy, nontuberculous mycobacterial infection, cutaneous tuberculosis. Conclusion:Both SLC35E1 and SLCE2B were markedly highly expressed in skin lesions of patients with Mycobacterium infections.

Objective To analyze the correlation among serum total IgE(TIgE),blood eosinophil(EOS) counts,the degree of sensitization for skin prick test(SPT),and fractional exhaled nitric oxide(FeNO)in chil-dren with asthma and allergic rhinitis. Methods We collected 121 children with asthma and allergic rhinitis andtheir serum TIgE,blood EOS,FeNO,and SPT for 14 common allergens. Results There were 75.2%patients sensitizing to at least two allergens.TIgE levels in poly-sensitized subjects were higher than that of mono-sensitized subjects(P < 0.05)The number of SPT sensitized allergens was positively correlated with the TIgE levels(P <0.05)FeNO levels were correlated with TIgE levels and EOS percentage(P < 0.05). TIgE levels in subjects with class 2 or 3 in SPT for house dust mite increased significantly ,compared with class 0 or 1. Conclusion There were some correlations among the four detections ,providing important reference for clinical diagnosis and treatment of respiratory allergic disease

This newly-emerging field uses tissue-specific cells in a three-dimensional organization, provided by a scaffolding material, to return functionality of the organ. For these applications, the choice of scaffolding material is crucial to the success of the technique. In addition to the chemical properties of the material, physical properties such as surface area for cell attachment are essential. Various methods of creating pores in these materials to increase surface area are reviewed here. Scaffolds formed using the different techniques, which include fiber bonding, solvent casting/particulate leaching, gas foaming and phase separation, are compared on the basis of porosity, pore size, and promotion of tissue growth.
Absorbable Implants ; Biocompatible Materials ; Lactic Acid ; chemistry ; Polyesters ; Polyglycolic Acid ; chemistry ; Polymers ; chemistry ; Surface Properties ; Tissue Engineering

The causes of panniculitis are various and complex, and infection is one of the important causes. Streptococcal infection is the most common cause in Europe and the United States with a low incidence of tuberculosis. In areas with a high incidence of tuberculosis such as China, Mycobacterium tuberculosis infection is an important cause of panniculitis, which commonly manifests as erythema induratum of Bazin and erythema nodosum. Erythema induratum of Bazinis is most closely related to tuberculosis, often clinically manifests as nodules, plaques and ulcers on the flexor aspect of the lower extremities, and pathologically manifests as lobular panniculitis. Erythema nodosum can be considered as an early symptom of tuberculosis, and serves as a predictive indicator of tuberculosis. It often manifests as erythema, nodules and few ulcers on the extensor aspect of both lower limbs, and is pathologically characterized by septal panniculitis. Antituberculosis treatment often yields favorable outcomes in patients with erythema induratum of Bazin or erythema nodosum. Therefore, clarifying the relationship between Mycobacterium tuberculosis and panniculitis is of great significance to the treatment and prognosis of panniculitis, especially in areas with a high incidence of tuberculosis.

Objective To investigate the sensitization pattern of Blomia tropicalis in patients with aller-gic respiratory disease and the association between Blomia tropicalis with allergic rhinitis and / or asthma. Meth-ods 330 allergic rhinitis and / or asthma patients sensitized with mites were selected in Guangzhou,and sIgE lev-el in the serum of all recruited patients of Blomia tropical,Dermatophagoide pteronyssinus and Dermatophagoide fa-rina was measured. Results The sensitization rate of Blomia tropicalis was significantly lower than that of Derma-tophagoide pteronyssinus and Dermatophagoide farina(P < 0.001,both). 80.0% Patients were sensitized with both three mites,and only 0.3% patients were of monosensitization to Blomia tropicalis. The sIgE of these three mites were significantly positive correlated with each other(P < 0.001),Dermatophagoide pteronyssinus and Derma-tophagoide farina have strong correlation(r = 0.906),Blomia tropicalis has moderate correlation with Dermatopha-goide pteronyssinus and Dermatophagoide farina(r = 0.540 and r = 0.512,respectively). With the increase of Blomia tropicalis sIgE,the severe sensitization rate(sIgE level:class 5~6)of patients sensitized combined Der-matophagoide pteronyssinus or Dermatophagoide farina significantly increased(P < 0.001). The sIgE level of Der-matophagoide pteronyssinus and Dermatophagoide farina in allergic asthma and rhinitis patients were significantly higher than that of patients with rhinitis or asthma alone(P < 0.001),and the sIgE level of Blomia tropicalis in pa-tients with both allergic asthma and rhinitis or with asthma alone were also significantly higher than that of patients with rhinitis alone(P = 0.006 and P = 0.020,respectively). Conclusion The Blomia tropicalis sensitized pa-tients usually sensitize together with Dermatophagoide pteronyssinus or Dermatophagoide farina,and the degree of Blomia tropicalis sensitized in asthma patients are higher.