Accidents, Occupational ; Adolescent ; Adult ; Ammonia ; poisoning ; Female ; Humans ; Male ; Young Adult

Objective To investigate the efficacy and clinical effectiveness of the steroid therapy with the all body and local application on hyperthyroid Graves ophthalmopathy.Methods A total of 57 patients (106 eyes)suffering from hyperthyroid Graves ophthalmopathy who hospitalized in the Department of Ophthalmology of the Second Affiliated Hospital of Harbin Medical University from Mar 2008 to Oct 2011 were enrolled in the study.Of the 57 patients,there were 21 males and 36 females,aged 18 to 57(average 37.28 ± 11.63).The clinical course was from 1 month to 5 years(average 29.63 ± 15.36 months).Based on the patient's age,sex and condition,the 57 patients were randomly divided into steroid pulse therapy with all body group(group SPT,29 patients,54 eyes)and peribulbar injection of long-term steraid group(group PI,28 patients,52 eyes).The patients in group SPT were treated with 0.5-l.0 g methylprednisolone by intravenous infusion daily for 3 days,and then stopped for 7 days,the treatment was repeated once.But the total application dose of methylprednisolone was not overruned 5.0-20.0 g.After that,the patients were treated with oral prednisone 40 mg/d.The dose of prednisone was reduced gradually to 5 mg/d.The total course of group SPT was 3 months.The patients in the group PI were treated with triamcinolone acetonide in periorbital injection of 20 mg once every two weeks for 3 months.After one month treated,all patients were visited.The patients' body weights of two groups were measured before the treatment and after one month treated.The ocular signs of the patients including visual acuity,diplopia,intraocular pressure,exophthalmos and horizontal visual palpebral fissure width were observed before and after the treatment.Results In the group SPT,the average body weight [(62.83 ± 7.23)kg]after the treatment was higher than that before the treatment[(57.03 ±7.13)kg],and also higher than that of the group PI[(59.89 ± 10.67)kg,t =25.25,2.08,all P＜ 0.05]after the treatment.In the group SPT,the average intraocular pressures before and after the treatment were (13.46 ± 1.78)and (13.69 ± 1.41)mm Hg(1 nm Hg =0.133 kPa),respectively.In the group PI,the average intraocular pressures before and after the treatment were (13.52 ± 2.19) and (13.77 ± 2.03)mm Hg,respectively.There was no significant differences before and after the treatment in both gr0ups(P＞ 0.05).In the group SPT and PI,the average exophthalmos after the treatment[(18.63 ± 2.22) and (14.85 ± 2.61)mm]were lower than those before the treatment[(20.78 ± 2.24) and (20.60 ± 2.81)mm,t =9.97,29.68,all P＜ 0.05],respectively.After the treatment,the average exophthalmos in the group PI was significantly lower than that of the group SPT(t =7.79,P＜ 0.05).In the groups SPT and PI,the average averagepalpebral fissure width after the treatment[(15.00 ± 1.80) and (11.65 ± 2.45)mm]were lower than those before the treatment[(17.22 ± 1.89) and (17.44 ± 2.37)mm,t =22.74,91.24,all P ＜ 0.05].After treatment of the group PI,the average exophthalmos was significantly lower than that of the group SPT(t =8.01,P ＜ 0.05).Conclusion Compared with the steroid pulse therapy with all body,the peribullbar application of long-term hormone for hyperthyroid Graves ophthalmopathy is more effective,with lcss side effects and worthy of promotion.

Objective:To prepare a kind of G418 resistance fibroblast feeder layers.Methods: In order to prepare a stock primary embryonic fibroblast (EMFI) cells, the pregnant Smad3ex8+/- mice containing heterozygous neo gene were killed 14 days after coitus to get the embryo. EMFI cells were tested by PCR to identify their gene types. Only one EMFI cell which contained heterozygous neo gene was chosen and treated with mitomycin C.The mitomycin C-treated EMFI feeders were stored at -70℃. Results: The EMFI feeder layers could support the growth of embryonic stem cell line TC-1 efficiently and could live in G418 resistance medium for 1-2 weeks.

To develop a cell-penetrating chimeric apoptotic peptide AVPI-LMWP/DNA co-delivery system for cancer therapy, we prepared the AVPI-LMWP/pTRAIL self-assembled complexes containing a therapeutic combination of peptide drug AVPI and DNA drug TRAIL. The chimeric apoptotic peptide AVPI-LMWP was synthesized using the standard solid-phase synthesis. The cationic AVPI-LMWP could condense pTRAIL by electrostatic interaction. The physical-chemical properties of the AVPI-LMWP/pTRAIL complexes were characterized. The cellular uptake efficiency and the inhibitory activity of the AVPI-LMWP/pTRAIL complexes on tumor cell were also performed. The results showed that the AVPI-LMWP/pTRAIL complexes were successfully prepared by co-incubation. With the increase of mass ratio (AVPI-LMWP/DNA), the particle size was decreased and the zeta potential had few change. Agarose gel electrophoresis showed that AVPI-LMWP could fully bind and condense pTRAIL at a mass ratio above 15:1. Cellular uptake efficiency was improved along with the increased ratio of W(AVPI-LMWP)/WpTRAIL. The in vitro cytotoxicity experiments demonstrated that the AVPI-LMWP/pTRAIL (W:W = 20:1) complexes was significantly more effective than the pTRAIL, AVPI-LMWP alone or LMWP/pTRAIL complexes on inhibition of HeLa cell growth. Our studies indicated that the AVPI-LMWP/pTRAIL co-delivery system could deliver plasmid into HeLa cell and induce tumor cell apoptosis efficiently, which showed its potential in cancer therapy using combination of apoptoic peptide and gene drugs.
Antineoplastic Agents ; chemistry ; Cell-Penetrating Peptides ; chemistry ; DNA ; chemistry ; Drug Delivery Systems ; HeLa Cells ; Humans ; Neoplasms ; drug therapy ; Particle Size ; Plasmids

ObjectiveTo find incidence rate of no-suicide self injury (NSSI) of junior school students in Dalian city,and to provide some evidences for interventions for them.MethodsRandomly drawn out 1463 junior school students were served as study objects.All objects were evaluated with Ottawa Self-Injury Inventory (OSI) and self-made investigate questionnaire,75 no-suicide self-injury were screening out.ResultsThe incidence ratio of NSSI of junior school students was 5.4％,there were no significant different between the male and female students.The highest incidence ratio was found at 13 years old.The average age for first-time self-harm was (12.24±1.344) years old.There were no significant different between the male and the female students( t=- 1.415,P =0.163 ) ; Cutting Skin was the most common way of NSSI ( 12.0％ ) ; Ideation of 80％ of the NSSI was from their Own Idea.2.7％ of the NSSI can Feel Relief through NSSI behavior.93％ of NSSI was to regulate their mood.100％ students of NSSI against NSSI behavior byReading Books or Listening Music,in which 60％ of NSSI believe the method was helpful to relax their mind.78.5％ of the NSSI resisted NSSI behavior by Watching TV or Playing Games,but they did not get enough effects.60％ NSSI considered themselves without the need to treat.41.3％ of NSSI had never been to treat.2.5％ of NSSI went to hospital for the wound.ConclusionNSSI is often be found in junior school students,and highest ratio is at 13 years old.The most common method of NSSI is Cutting Skin.More NSSI aim is to release their emotion,and self-injury behavior accordance with their inner thoughts.NSSI behavior often is secret,and reading and listening to music is cut off from the relative effective way to conduct.NSSI are seldom to initiative doctor,and education organ,parents and society in a three-dimensional one of the system is necessary.

OBJECTIVETo establish an animal model of lung injury in SD rats using intratracheal instillation of unknown polymer and to provide the base for exploring the molecular mechanism of lung tissue injury induced by occupational exposure.

METHODSOne hundred forty SD rats were randomly divided into seven groups, including the control group 1 which was exposed to normal solution, the control group 2 which was not exposed to any one and five treatment groups which were exposed to 1 ml unknown polymer (0.5 ml for each lung) at the doses of 40, 30, 20, 10 and 5 mg/ml, respectively by intratracheal instillation. The rats were sacrificed on the 1st, 3rd, 7th, 10th, 14th, 21th and 28th day after exposure, then the lung tissues were examined pathologically and the blood bio-chemical analysis was conducted.

RESULTSThe results of blood biochemical analysis indicated that ALT and AST levels in rats exposed to 30 and 40 mg/ml unknown polymer were significantly higher than those in control groups. Intratracheal instillation of unknown polymer can causes PLF in experimental animals on the 14th days after exposure. The results of pathological examination exhibited that the lung tissue injury in rats exposed to unknown polymer for 14 days or more was found and the dose-effect relationship was observed.

CONCLUSIONAn animal model of lung injury in SD rats induced by unknown polymer with intratracheal instillation was established successfully. The results of pathological examination showed that the types of rat lung injury were similar to the clinical lung injury after exposure to unknown polymer, which provided a base for studying the mechanism of lung injury caused by occupational exposure to unknown polymer.

Animals ; Disease Models, Animal ; Female ; Lung ; drug effects ; pathology ; Lung Injury ; chemically induced ; Male ; Polymers ; toxicity ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo investigate the clinicopathologic features of gastrointestinal stromal tumors (GISTs) and to identify reliable prognostic parameters.

METHODSFifty-nine GISTs were studied by immunostaining of CD117, CD34, SMA, desmin, S-100, bcl-2, and Ki-67. Histopathologic evaluations included tumor size, necrosis, histological growth patterns, mitotic activities and tumor lymphocytic infiltrate. The patients were clinically followed for 2 to 9 years. Univariate, multivariate and correlative statistical evaluations were used to analyze the data.

RESULTSAmong the 59 patients, 40 were alive and 15 died of their tumors at follow-up, the remaining 4 patients died of other causes. Pathological parameters that correlated with prognosis included tumor sizes of more than 5 cm, tumor tissue necrosis, mitotic cell count equal or higher than 5 per 50 high power field, Ki-67 labeling index (LI) equal or higher than 5% and intense bcl-2 immunostaining. Multivariate analysis showed that the mitotic count and Ki-67 LI were independent prognostic indicators. There was a correlation between mitotic count and Ki-67 LI.

CONCLUSIONSMitotic count and Ki-67 LI are the best predictors for a poor outcome of GIST after surgical treatment. Ki-67 immunostaining may substitute mitotic count as a useful prognostic parameter.

Adolescent ; Adult ; Aged ; Child ; Cyclin D1 ; metabolism ; Female ; Follow-Up Studies ; Gastrointestinal Stromal Tumors ; metabolism ; pathology ; Humans ; Ki-67 Antigen ; metabolism ; Male ; Middle Aged ; Prognosis ; Proto-Oncogene Proteins c-bcl-2 ; metabolism ; Proto-Oncogene Proteins c-kit ; metabolism

OBJECTIVETo identify the mutations of iduronate-2-sulfatase (IDS) gene, to reveal its mutation features, and to establish a basis for genetic counseling and prenatal gene diagnosis of Hunter syndrome.

METHODSUrine glycosaminoglycans (GAGs) assay, PCR and DNA sequencing were performed to detect mutation of IDS gene of the patient and his parents.

RESULTSThe result showed that the patient was: DS(++), HS(++), KS(-), CS(-), and that both of his parents were negative. A frame-shift deletion mutation (1062 del 16) was identified in exon 7 of the patient's IDS gene. His parents' genotypes were normal.

CONCLUSIONThe patient's mutation was not inherited by his parents but a novel one. The mutation probably altered the primary structure and tertiary structure of IDS enzyme protein remarkably and lowered the activity of IDS enzyme greatly. Therefore it is supposed to be the direct cause of the disorder.

Asian Continental Ancestry Group ; genetics ; Base Sequence ; Child, Preschool ; Female ; Glycoproteins ; genetics ; urine ; Humans ; Male ; Mucopolysaccharidosis II ; enzymology ; genetics ; urine ; Mutation ; genetics

Objective To screen the mutation of certain gene of a 10-years-old boy with multiple xanthomas and very high level of cholesterol who could be diagnosed as homozygous familial hypercholesterolemia (FH),to explore the relationship between the genotype and phenotype,and to discuss the molecular pathologic mechanism.Methods The basic information of life styles were asked from the boy and his familial members.The blood was drown to examine the lipid and genes.The boy was examined with electrocardiogram examination,ultrasonography and coronary CT angiography (CTA) to evaluate the degree of atherosclerosis.Peripheral blood DNA of the boy and his parents were extracted by phenol-chloroform method and investigated for mutations of promoter and all 18 exons of low density lipoprotein receptor(LDLR) gene.Screening was carried out by using Touch-down polymerase chain reaction (PCR) and single strand conformation polymorphism(PCR-SSCP),combined with DNA sequence analysis.In addition,the apolipoprotein B100 gene(apoB100) for known mutations (R3500Q) which caused familial defective apoB100 was screened by PCR-DNA sequence analysis.Results 1.The level of cholesterol of his parents were higher than the normal.2.Several clinical manifestations of atherosclerosis were detected from that boy.Increased intima-media thickness and plaques were detected in the common carotid artery.Mitral valve regurgitation was found by echocardiography.Coronary stenosis was confirmed by CTA.3.No mutations R3500Q of apoB100 was observed.4.A homozygous mutation in exon13 of the LDLR gene (D601Y) were identified in the boy and his parents harbour D601Y heterozygous mutation due to a single base pair substitution of G for T in the codon for residue 1864.Conclusions The final diagnosis of the boy with multiple xanthomas was homozygous FH.His disease was caused by D601Y homozygous mutation in exon13 of the LDLR gene inherited from his heterozygous parents.

OBJECTIVE: To establish an accurate, simple, quick, specific and sensitive method for species identification by amplifying 12S rRNA gene with the same reaction system. METHODS: Based on the downloaded 12S rRNA gene sequences of eleven species (human, chicken, duck, goose, pig, rabbit, rat, sheep, bull, dog and goat) from GenBank, a pair of universal primers to eleven species and three pairs of specific primers to human, chicken and duck were designed. The amplicons amplified with universal primers were used for internal controls, and the amplicons amplified with specific primers were used as identification of human, chicken and duck. DNA was extracted from various samples including blood stains, fresh or freezing muscles, heat-treated muscles and hairs. Both single DNA of human, chicken or duck and mixed DNA of any two kinds of them were amplified. RESULTS: The lengths of universal amplicons were about 400 bp. The lengths of specific amplicons were 163 bp for human, 286 bp for chicken, and 374 bp for duck, respectively. No cross amplification was observed, indicating a high specificity of the specific primers. The identification rate was 100% for human, 99% for chicken, and 100% for duck, respectively. The detection sensitivity ranged from 2.5 pg to 200 pg of DNA concentration depending on species, even in mixtures of different species DNA without interference. CONCLUSION The method established could identify different species under the same reaction system.
Animals ; Blood ; Cattle ; DNA/analysis* ; Dogs ; Forensic Genetics ; Hot Temperature ; Humans ; Polymerase Chain Reaction/veterinary* ; Poultry/genetics* ; RNA, Ribosomal/genetics* ; Rabbits ; Rats ; Sheep ; Species Specificity ; Swine