OBJECTIVETo explore the relationship between latex allergen and clinical presentation as well as allergenic cross-reactivity between latex and other allergens, to know the incidence of latex allergy in Chinese children and elucidate the allergenic cross-reactivity of latex with other allergens.

METHODSTotally 265 children with allergic disorders were assayed with 13 international standard allergen agents by means of SPT.

RESULTSIn 79 children with latex allergenic SPT position, 53 were boys and 26 were girls with an average age of 5.6 years, and 14 cases had episodes occurred in winter, 14 cases in spring, 24 cases in summer, and 27 cases in autumn. Of them, 66 cases presented as asthma, 5 cases atopic skin disorders, 1 case anaphylactoid purpura, 1 case hives and 6 cases only had mild cough. Statistical analysis showed that the positive percentage of the latex SPT had no obvious relation with sex and age, but was higher in summers and autumns than in winters and springs (P < 0.01). Children with allergic symptoms had higher positive rate in latex allergenic SPT than those without them, that is, the positive percentage of the latex SPT significantly increased among children presenting with some allergic symptoms, such as asthma, hives and atopic skin disorders (P < 0.01). All the children with latex allergenic SPT position had cross-reactivity with acarid allergen, 62.0% approximately 43.0% with animal protein allergens including milk, cats, shrimp, dogs, eggs in the order of decreasing cross-reaction rate, and 10.1% - 3.8% with mold and plant farina allergens. But the cross-reactivity between latex and mold or tree farina I were not statistically significant.

CONCLUSIONThirty percent of the children with allergic disorders were latex allergenic SPT positive. Latex allergenic SPT positive results were significantly correlative to allergic clinical presentation and season, while were not relative to sex and age. The cross-reactivity of latex with acarid was most common, followed by animal protein allergens, while the cross-reactivity with mold and plant farina allergen was rare.

Allergens ; immunology ; Animals ; Asthma ; immunology ; Child ; Child, Preschool ; Cross Reactions ; Female ; Humans ; Infant ; Latex Hypersensitivity ; classification ; diagnosis ; immunology ; Male ; Predictive Value of Tests ; Seasons ; Skin Tests

The purpose of this paper is to clarify the structure-activity relationship of anti-tumor activity of diosgenin derivatives in vitro. Study has found that diosgenin can inhibit the reproduction of tumor cells by inducing apoptosis and the main target spot of this effect is Bcl-2. Based on the characteristics of pharmacophoric points' of the three-dimensional pharmacophore for Bcl-2 inhibitors, we have docked lots of diosgenin derivatives with Bcl-2, then synthesized 31 compounds of them, finally assessed the anti-tumor activity of the diosgenin derivatives in vitro against A375, A549, HepG-2 and K562. Preliminary studies of SAR have indicated that the aliphatic esters, and aromatic esters of diosgenin without F ring have no anti-tumor activity in vitro. The triazole bromides of diosgenin all achieve fairly good anti-tumor activity in vitro, and those with larger hydrophobic group have the better activity. The stronger is the hydrogen bonding interaction and dipole-dipole interaction of the heterocyclic of diosgenin and diosgenin without F ring and the acid ester of diosgenin without F ring, the better is the activity of derivatives.
Antineoplastic Agents, Phytogenic ; chemical synthesis ; chemistry ; pharmacology ; Apoptosis ; drug effects ; Cell Line, Tumor ; Diosgenin ; analogs & derivatives ; chemical synthesis ; chemistry ; pharmacology ; Humans ; Proto-Oncogene Proteins c-bcl-2 ; antagonists & inhibitors ; Structure-Activity Relationship

Objective To systematically evaluate the differences in preoperative planning for left atrial appendage closure(LAAC)using cardiac CT angiography(CCTA)and transesophageal echocardiography(TEE).Methods Relevant studies comparing CCTA and TEE for preoperative assessment of LAAC published from the inception of each database to July 18,2023,were searched in PubMed,EMBASE,the Cochrane Library,CNKI,Wanfang,and CBM database.Meta-analysis was performed using RevMan 5.4 and Stata 15.1.Results A total of 21 studies with 2 137 patients were included.Compared to TEE,preoperative CCTA measurement of the left atrial appendage(LAA)showed a larger maximum diameter(MD 2.27 mm,95％CI 1.70-2.83,P＜0.001)and higher accuracy in predicting occlusion device(RR 1.67,95％CI 1.39-2.01,P＜0.001).Subgroup analysis based on whether 3D reconstruction was performed and occlusion device type showed similar results.There was no statistically significant difference in the surgical success rate(RR 1.03,95％CI 0.98-1.08,P=0.230)between the two imaging methods.Additionally,preoperative 3D reconstruction based on CCTA resulted in fewer occlusion devices used(MID-0.29,95％CI-0.53--0.04,P=0.020),less contrast agent usage(MD-4.48 ml,95％CI-7.40—-1.56,P=0.003),shorter operative time(MD-14.98 min,95％CI-17.79—-12.17,P＜0.001),and a lower rate of postoperative residual leakage(RR 0.59,95％CI 0.36-0.99,P=0.040).Conclusions Compared to TEE,preoperative CCTA for LAAC improves the accuracy of occlusion device prediction.3D reconstruction based on CCTA reduces the occlusion devices used and the usage of contrast agents,shortens the operative time,improves surgical efficiency,and is associated with a lower rate of postoperative residual leakage.Therefore,CCTA has more advantages in preoperative planning for LAAC.

OBJECTIVETo explore the roles of basic fibroblast growth factor (bFGF) on tube formation induced by xuefu zhuyu decoction (XZD) under non-anoxia condition.

METHODSUsing serum pharmacology technique, endothelial cell line ECV304 cells were incubated in routine 95% O2. ECV304 cells were intervened by 1.25%, 2.50%, and 5.00% XZD containing serums and the vehicle serum for 48 h. The effects of XZD on tube formation, bFGF contents and its transcription levels were assessed by in vitro tube formation assay, enzyme-linked immunosorbent assay (ELISA), and reverse transcriptase polymerase chain reaction (RT-PCR), respectively.

RESULTSThree concentrations of XZD containing serums could not only obviously promote the tube formation bFGF level, but also up-regulate bFGF contents in the supernate and its transcription levels. The shapes of lumens were more regular in those induced by 1.25% and 2.50% XZD containing serums.

CONCLUSIONXZD induced angiogenesis via up-regulating the bFGF expression under non-anoxia condition.

Animals ; Cell Line ; Drugs, Chinese Herbal ; pharmacology ; Endothelial Cells ; drug effects ; metabolism ; Female ; Fibroblast Growth Factor 2 ; metabolism ; Humans ; Male ; Neovascularization, Physiologic ; drug effects ; Rats ; Rats, Sprague-Dawley

Genetic characteristics of enterovirus type 71 in Shenzhen from 2005 to 2008 were analyzed. All samples were detected by RT-PCR using EV71-specific primers. The VP1s of EV71 strains were amplified and sequenced. A phylogenetic tree was constructed by comparison of the sequences with those of subgenotype A, B and C using DNASTAR, BioEdit and Mega 3.1 softwares. The VP1 nucleotide sequences of 17 strains of Shenzhen shared 95.3%-99.4% identities with cluster C4a, and one strain shared 93.0%-95.6% identities with cluster C4b. The homogeneity of the VP1 nucleotide sequence with subgenotype A and B was 81.8%-86.0%. Among 18 strains, the homogeneity of the VP1 nucleotide sequence was between 92.5%-100%. All EV71 strains circulating in Shenzhen were of subgenotype C4. The predominant strain of EV71 belonged to cluster C4a, also there was cluster C4b.
Cell Line ; China ; Enterovirus A, Human ; classification ; genetics ; isolation & purification ; Enterovirus Infections ; virology ; Feces ; virology ; Genotype ; Humans ; Molecular Sequence Data ; Phylogeny ; Viral Proteins ; genetics

BACKGROUNDThe effectiveness of chemoradiotherapy followed by surgery (CRTS) in patients with resectable esophageal carcinoma remains controversial. We performed a systematic review of the literature with meta-analysis.

METHODSElectronic databases were used to identify published studies between January 1992 and April 2012. Pooled relative risk (RR) with 95% confidence interval (95% CI) was utilized to estimate the strength of the association between CRTS and surgery alone (SA) survival of the resectable esophageal carcinoma patients. Heterogeneity and publication bias were also assessed in the present study.

RESULTSThe final analysis of 2755 resectable esophageal carcinoma cases from 21 randomized controlled trials (RCTs) are presented. Compared to the SA group, the 1, 3- and 5-year survival rates were significantly higher in the CRTS group (all P < 0.05); the 3- and 5-year survival rates for the Eastern patients, Western patients, patients undergoing concurrent chemoradiotherapy, patients with squamous cell carcinoma, patients undergoing High-dose radiotherapy (≥ 40 Gy), and patients given either "cisplatin + Fluorouracil" or "cisplatin + paclitaxel" chemotherapy were significantly higher in the CRTS group (all P < 0.05). There were no statistical significances in the 3- and 5-year survival rates for patients undergoing sequential chemoradiotherapy or patients with adenocarcinoma between the two groups (all P > 0.05). Compared to the RCTS group, the surgery rate in the SA group was higher (P < 0.05), while the CRTS group had significantly higher radical resection rate, R0 resection rate and lower postoperative local recurrence rate (all P < 0.05). The differences in postoperative complication incidence, post-operative distant metastasis and postoperative mortality rate were not statistically significant between the two groups (all P > 0.05).

CONCLUSIONCRTS can significantly improve the survival and surgical conditions of patients with resectable esophageal carcinoma.

Chemoradiotherapy ; Esophageal Neoplasms ; mortality ; surgery ; therapy ; Humans ; Postoperative Complications ; epidemiology ; Randomized Controlled Trials as Topic ; Survival Rate

OBJECTIVETo determine distribution and mutation pattern of type P ATP7B gene mutation and to explore genotype and phenotype correlation in patients with Wilson's disease (WD).

METHODSSixty patients with WD from 57 no kinship families, 37 male and 23 female, were enrolled in this study. The age of onset ranged from 4.6 - 39 years, < or = 16 years in 55 patients. Some exons of ATP7B gene mutation were analyzed in patients with WD by using biochemical methods, polymerase chain reaction-single strand configuration polymorphism (PCR-SSCP), restriction fragment and DNA sequence analysis. Totally 778 coding regions were identified with restriction enzyme Msp I. The activity of Cu-ATPase was assessed by measuring inorganic phosphorus in 3 patients with known genotype.

RESULTSFifty-two of 60 patients (86%) had presented with hepatic manifestations, 30 of them had only hepatic manifestations, 12/52 patients had hepatic and neurological manifestations at the same time; 10/52 patients had hepatic and other symptom; 7/60 patients had only neurological symptom, one patient had no symptom. Eleven mutations were detected by DNA sequencing, including five missense mutations (R778L, V1140A,G943S, V1106I and V1216M), one deletion (1384del17) and five polymorphisms (IVS4-5T/C, A2495G, C2310G, IVS18 + 6C/T and IVS20 + 5A/G) were identified. R778L mutation was identified 52/114 alleles (45.6%). R778L occurred in 38/52 patients with hepatic manifestation (73%), homozygosis of R778L was demonstrated in 14 patients and heterozygosity of R778L in 24 patients. V1106I mutation was 1.7%, G943S, V1140A, and V1216M was 0.86% respectively in this study. Two patients with delayed onset of neurological symptoms occurred V1106I mutation of ATP7B. Cu-ATPase activity of 3 patients with known mutation (R778L/V1106I, R778L/V1216M and R778L/R778L) declined by 44.55%, 88.23% and 69.49%, respectively, compared with normal control.

CONCLUSIONThe 1384del17bp and V1106I are two novel mutations found in patients with WD. R778L was common mutation of ATP7B gene with frequency of 45.6% in this study. The mutation in exon 8 of WD gene may play an important role in pathogenesis of WD in Chinese. Carriage of R778L mutation seems to be correlated with hepatic manifestation.

Adenosine Triphosphatases ; genetics ; Adolescent ; Adult ; Cation Transport Proteins ; genetics ; Child ; Child, Preschool ; Copper-transporting ATPases ; DNA Mutational Analysis ; Exons ; Female ; Gene Frequency ; Genotype ; Hepatolenticular Degeneration ; enzymology ; genetics ; pathology ; Humans ; Male ; Mutation ; Phenotype ; Polymerase Chain Reaction ; Polymorphism, Single-Stranded Conformational ; Sequence Analysis, DNA

OBJECTIVETo evaluate the clinical outcome of dual plating in the treatment of humeral intercondylar type-C fractures in adults.

METHODSFrom June 2004 to October 2007, 38 cases of type-C distal humeral fractures were stabilised with dual plating. There were 21 males and 17 females. The average age was 43 years with a range from 21 to 71 years. According to the AO classification, 9 cases were of type C1, 17 of C2 and 12 of C3. The posterior midline approach was selected. Twenty-one cases were exposed through the trans-olecranon osteotomy, 11 through the Campbell (Van Gorder) approach, 6 through triceps sparing approach. Autogenous bone graft was performed in 5 cases because of severe comminution.

RESULTSThirty-five patients were followed-up for 14-30 months (mean 24.2 months). At the latest follow-up, the elbow flexion averaged 119 degrees (range 90 degrees - 135 degrees ), and the loss of extension averaged 16.2 degrees (range 5 degrees - 25 degrees ). All the patients got bony healing, the average healing period was 14 weeks. The patients were evaluated using the criteria of Aitken and Rorabeek and the scores were 13 excellent, 16 good, 6 fair. Twenty-nine patients (82.9%) had a good or excellent results. Complications included 4 cases of traumatic osteoarthritis, 2 heterotopic ossification, 1 ulnar neuropathy. Infection as well as loosening or breakage of the implant was not found.

CONCLUSIONSThe dual plating is able to provide rigid fixation for the humeral intercondylar fractures. In addition, it can allow early functional exercise after operation, decrease the related complications significantly, and improve the functional results.

Adult ; Aged ; Bone Plates ; Elbow Joint ; physiopathology ; Female ; Follow-Up Studies ; Fracture Fixation, Internal ; methods ; Humans ; Humeral Fractures ; physiopathology ; surgery ; Male ; Middle Aged ; Recovery of Function ; Treatment Outcome ; Young Adult

AIMTo study the therapeutic effects of oxyphenamone, a novel inodilator, on myocardial ischemia.

METHODSThe cardiac hemodynamic variables in cats with acute myocardial infarction induced by occlusion of the left anterior descending coronary artery (LAD) were recorded with a physiological polygraph and electromagnetic flowmeter. A model of myocardial necrosis induced by subcutaneous injection of isoproterenol was used for evaluating the effects of drugs on myocardial enzymes and morphological change.

RESULTSIntravenous injection of oxyphenamone (2 - 8 mg x kg(-1)) dose-dependently decreased heart rate, mean arterial pressure, vascular resistance and the parameters of myocardial oxygen consumption (tension time index, TTI) in cats with myocardial infarction. It increased myocardial contractile force and cardiac output transiently but showed no influence on the left ventricular pressure and cardiac work. The changes of myocardial morphology, creatine phosphate kinase (CPK), malodialdehyde (MDA) and serum glutamic-oxaloacetic transaminase (GOT) induced by isoproterenol in rats were diminished by intraperitoneal injection of oxyphenamone (4 - 8 mg x kg(-1)).

CONCLUSIONBy the examination of the cardiac hemodynamics, myocardial enzymes and morphology, it showed that the myocardial damage induced by ischemia or beta-agonist can be antagonized markedly by oxyphenamone, indicating that oxyphenamone may be beneficial for the treatment of myocardial infarction.

Animals ; Blood Pressure ; drug effects ; Cardiac Output ; drug effects ; Cardiotonic Agents ; pharmacology ; Cats ; Heart ; physiopathology ; Heart Rate ; drug effects ; Male ; Myocardial Contraction ; drug effects ; Myocardial Infarction ; pathology ; physiopathology ; Myocardium ; metabolism ; pathology ; Organic Chemicals ; pharmacology ; Rats ; Rats, Wistar ; Vasodilator Agents ; pharmacology