Objective To understand the clinical and pathological features of hepatitis B virus-associated glomerulonephritis(HBV-GN).Methods Twenty children with HBV-GN were analysed including 17 cases of nephritic syndrome (4 cases of simple nephrosis, 13 cases of nephritic nephrosis),2 cases of isolated proteinuria, 1 case of nephritic syndrome according to the clinical classification.Results On the basis of pathology of kidney biopsy, there were 15 cases of membranous glomerulonephritis(MN),3 cases of manbranoproliferative glomerulonephritis(MPGN),2 cases of mesangial proliferative glomerulonephritis(MsPGN).Eight of 20 cases were treated with recombinated human alpha-interfeon. The average follow-up time was 5.7 years. As the result, complete remission clinically was on 5 cases,partial remission on 2 cases and ineffectiveness on one case. Besides, serum HBsAg, HBeAg were converted to negative on 3 cases , HBeAg disappeared and anti-HBe appeared on one case.Conclusion MN is common in childhood with HBV-GN.It also indicates the prognosis of the associated nephropathies is quite favorable.

Objective To explore the relationship between clinical and pathological changes of complement 1q(C1q) nephropathy. Methods Clinical manifestation, pathologic features including glomerulus change, renal tubule - interstitial change and im-munopathology were compared between 10 cases of C1q nephropathy in children, who were diagnosed by renal biopsy. Results Presentation included idiopathic nephritic syndrome(6 cases), simple hematuria(2 cases), nephritic syndrome(1 case), rapidly progressive glomerulonephritis( 1 case); Renal biopsy revealed focal segmental glomerulosclerosis( FSGS) in 5, minimal-change disease( MCD) and mesangial proliferative glomerulonephritis (MsPGN) respectively in two and crescentic glomerulonephritis in one. In addition, there were renal - tubule interstitial changes with 3 cases of grade I and grade II each other, 2 of grade III , 1 of grade IV . The prominent immunofluorescent features was the presence of bright mesangial deposition of C1q. The average follow - up time was 25.7 months. Six cases presenting nephrotic syndrome were resistant to steroid, but 5 were released after immunosuppressive therapy, the other had progressive renal insufficiency. Conclusions C1q nephropathy falls with the clinical - pathologic spectrum of FSGS generally. It is also presented as steroid - resistant nephritic syndrome. Moreover, the prognosis of C1q nephropathy is related to renal tubulointerstitial pathologic lesions not to C1q deposition.

Purpose To propose a novel compression method for region of interest (ROI) based on Curvelet transform and SPIHT algorithm. Materials and Methods The ROI was firstly extracted without compression, and Curvelet transform was applied for the background regions. The Curvelet coefifcients were coded using SPIHT algorithm. Then the images after compression are obtained by inverse Curvelet transform. The ROI and the background were ifnally overlapped to get the full compressed image. Effect of ROI compression and overall compression were compared, as well as the Curvelet transform and wavelet transform, based on peak signal noise ratio. Results The ROI compression highlighted the region of interest and the visual effect was superior to the overall compression. The peak signal to noise of Curvelet transform was higher than that of wavelet transforms, and the compressed images were more clear for the same proportion. Conclusion ROI compression based on Curvelet transform and SPIHT algorithm can achieve efficient compression images without losing important diagnostic information, which complies with the requirement of high precision and high quality of medical image compression.

Objective To investigate the relationship between the genetic variation of leptin receptor and obesity in Chinese population. Methods Genomic DNA was extracted from 50 obese subjects 〔Body mass index (BMI)≥30 kg/m 2〕 and 50 normal individuals (BMI

China ; epidemiology ; Cryptococcosis ; epidemiology ; Cryptococcus gattii ; Humans

A combination vaccine which consists of ≥2 immunogens is intended to provide protection against two or more diseases or against multiple serotypes of a single disease. The use of combination vaccines decrease the number of vaccine injections in the regular immunization schedules. However,the development of combination vaccines is more complicated than monovalent vaccines,preservatives and adjuvants used with one component may alter the potency of other components. Physical,chemical,and biological interactions between the components of combination vaccines must be considered to avoid detrimental effects on safety or efficacy. Therefore combination vaccines present unique challenges for product evaluation. This paper presents a review of research application status,the evaluation of effectiveness and safety,as well as development prospects on combination vaccines.

Objective To investigate the physical and mechanical properties of home-made bone cement mixed with different antibiotics.Methods The specimens of bone cement each of 40g were divid-ed in to6groups depending on mixed antibiotics,groupⅠmixed with1g gentamicin,groupⅡwith2g gen tam icin,groupⅢwith1g cephradine,groupⅣwith1.5g cefuroxine,groupⅤwith1g ceftriaxone and groupⅥwith out any antibiotics served as control.The dough time,compressing depth,compressive strength,bending strength and bending elastic modulus were measured respectively,elution examination of antibiotics from bone ce ment was performed by chromatography.Results The dough time and compress-ing depth of the groups were better than that of ISO5833standard,and there was no significant difference a-mong the groups.The com pressive strength and bending strength of the groupⅡwere lower than that ISO5833standard,but there was no significant difference among the groups by analysis of variance.The bending elastic modulus of the groupⅡwas lower than the control group and other groups(P

Objective To investigate the effect of psychological stress on serum iron concentration of SD rats and its mechanism. Method SD rats were randomly divided into four groups: control group (CG), psychological stress 1w group (PG 1w) and 2w group (PG-2w), and psychological stress 2w with 1w free group (PG 2w-1w). The animal model of stress was tested for 1w, 2w, and 2w with 1w free from stress. The iron concentration of serum, liver, spleen and the expression of liver hepcidin were detected by atomic absorption spectrometry and Western blot respectively. Result (1) Compared with control group, serum iron concentration of rats under stress decreased. (2) Free of psychological stress 1w later, serum iron concentration was not significantly changed. (3) Iron concentration of liver and spleen was increased significantly compared with control group, and the expression of liver hepcidin was also increased. Conclusion Psychological stress may cause serum iron of rats to decrease obviously, and it was restored after 1w free from psychological stress. The mechanism is supposed to be increase of iron storage in liver and spleen by hepcidin in rats under psychological stress.

OBJECTIVE: To investigate the clinical feature,diagnostic and therapeutic methods of ultimobranchial fistula and cyst of thyroid. METHOD: Four cases of ultimobranchial fistula and cyst of thyroid in our hospital were reported and the relevant literatures were reviewed. RESULT: The branchial fistula and cyst of four cases were adhered to thyroid,with unclear anatomical landmarks, the function of recurrent laryngeal nerve were bad before the operation in two cases. The nerve of four cases were retained, the function of thyriod and parathyroid gland were normal and no recurrence were found. CONCLUSION Ultimobranchial fistula and cyst of thyroid is rare and is easier to be misdiagnosed and wrong treated. Surgical excision is effective for it and recurrent laryngeal nerve should be protected when performing the operation.
Cysts ; Diagnostic Errors ; Fistula ; Humans ; Parathyroid Glands ; Recurrent Laryngeal Nerve ; Thyroid Diseases ; pathology ; surgery

Objective To explore the relationship between CA repeats polymorphism in the promoter region of IGF-1 gene and MS in the Han nationality.Methods 1047 subjects were recruited from general population of Dongcheng District in Beijing.MS was diagnosed based on the criteria for MS in 2005 by IDF.Genomic DNA was extracted by standard methods.PCR,Genescan,Genotyper and direct sequencing were conducted to screen CA repeats polymorphism in the promoter region of the human IGF-1 gene.Levels of plasma glucose,lipids,serum insulin and IGF-1 were determined.BMI and ISI were calculated.Results The prevalence of MS in (CA) 19 homozygote was lower than that in (CA) 19 heterozygote (9.1% vs 18.3%,x2 = 8.55,P ＜ 0.01) and without (CA) 19 (9.1% vs 24.0%,x2 = 18.05,P ＜ 0.01).The level of serum IGF-1 had differences among the three groups [ (114.0 ± 52.6) μg/L vs (136.6 ± 80.5) μg/L vs (129.2±49.1) μg/L,F =3.16,P ＜0.05],(CA)19 homozygote had lower serum IGF-1 than (CA)19heterozygote and without (CA) 19.BMI,WC,TG,FIns,2hIns and ISI had difference among the three groups (P ＜0.05).Conclusions (CA)19 repeats polymorphism in the promoter region of IGF-1 gene was significantly associated with MS in Han nationality.