Objective To synthesize 99Tcm- (hydrazinonictinamide- [Lys3] -bombesin) (tricine)(trisodium triphenylphosphine-3,3',3"-trisulfonate) ((HYNIC-[Lys3]-BBS) (tricine) (TPPTS)) and evaluate its biodistribution and binding capability with tumor tissue in Balb/c nude mice bearing human pancreatic cancer xenografts. Methods HYNIC was conjugated to the [Lys3] -BBS at pH = 9.0 with SnCl2 as reducing agent and both tricine and TPPTS as coligands for 99Tcm-labeling. 99Tcm-HYNIC-[Lys3]-BBS)(tricine) (TPPTS) was purified by Sep-Pak C18 cartridge and was analysed by HPLC. The radiochemical purity and radiolabeling yield were measured. The stability of 99Tcm-(HYNIC-[Lys3]-BBS) (tricine)(TPPTS) in serum, biodistribution (% ID/g) in the normal mice and imaging of the Balb/c nude mice bearing human pancreatic cancer xenografts in vivo were studied. Results The radiolabeling yield was (90 ±2)% and the radiochemical purity was over 95%. The radiochemical purity after 4 h in serum was over 85%. The distribution in normal mice showed rapid clearance from blood (the uptake was (0.07 ±0.01) %ID/g at 2 h postinjection). 99Tcm-(HYNIC-[Lys3]-BBS) (tricine) (TPPTS) was excreted mainly via the kidney with little radioactivity accumulation in the liver and gastrointestinal tract (the uptake of liver, stomach, intestine was (0.27 ±0.03), (0.06 ±0.03), (0.04 ±0.00) %ID/g at 2 h postinjection). Marked uptake of radioactivity was found in tumor tissue of the Balb/c nude mice bearing human pancreatic cancer with maximum T/NT ratio of 3.71 ± 0.57 at 2 h postinjection. Conclusions 99Tcm-(HYNIC-[Lys3]-BBS)(tricine) (TPPTS) can be easily prepared with high radiolabeling yield and radiochemical purity. The stability in serum and good biodistribution charateristics make it useful for the diagnosis of human pancreatic cancer with over-expression of the gastric-releasing peptide(GRP) receptor.

AIM: To observe the effects of porous polyethylene ( Medpor) as a spacer graft in the reconstruction of large areas eyelid defect after the operation of malignant tumors of lower eyelids.
METHODS: Nineteen cases ( 19 eyes ) of malignant tumors of lower eyelid underwent the eyelid reconstruction were selected. Medpor lower eyelid inserts implantation were used to replace tarsal joint sliding conjunctival flap and pedicle flap, and repaired full -thickness lower eyelid defects then underwent eyelid reconstruction.
RESULTS: Appearance of eyelids and functional improvements were satisfactory with no stimulation on the eyeball and no effect on the visual function. Implants is with no absorption, shift, exclusion or infection and no tumor recurrence in all cases during the follow up for 6-36mo.
CONCLUSION: Medpor lower eyelid inserts implantation can instead tarsal plate for the reconstruction of medium to large areas lower eyelid defect, which is easy performing with rare complications. It is an ideal alternatives of tarsal plate.

Objective To investigate clinical significance of computed tomography (CT) scan in diagnosis of bronchial foreign body in children.Methods Twenty-one suspected children with bronchial foreign body were studied with spiral CT cross-section scan and coronal reconstruction and diagnosis was confirmed with bronchoscopy.Results The foreign body was displayed in all of 21 cases. CT scan showed foreign body was located in right main bronchial 12 cases, right middle bronchial 1 case, right inferior lobar bronchial 2 cases and left main bronchial 6 cases. Foreign bodies were extracted with bronchoscopy.Conclusion CT scan can display and locate accurately foreign body in bronchial of children,and has very important diagnostic value in patients having atypical histories, clinical and radiological findings.

Using the Gram-positive Staphylococcus aureus as the indictor bacterium,fourteen antibacterial strains were initially obtained by the bilayer-media screening method from the raw milk samples,and one isolate was found to exhibit the higher antibacterial activity against the indicator. This isolate was further studied on its individual and cultural morphology features,partial physiological and biochemical reaction activities,G+C content,the sequence features of the 16S rDNA and the species-specific N-acetylmuraminidase gene(acmA) ,consequently,it was identified as the Lactococcus lactis subsp. lactis strain,named as MB191. An evaluation of the antimicrobial spectra of MB191 was subsequently performed,it showed the remarkable activities against not only the tested Gram-positive bacteria,but also several Gram-negative bacteria including Pseudomonas syringae and P. fluorescens,as well as the yeast Debaryomyces hansenii,which was a distinctive feature that was not reported prior to this study.

The genome of CK/CH/SD09/005, an isolate of infectious bronchitis virus (IBV), was characterized to enable the further understanding of the epidemiology and evolution of IBV in China. Twenty-five pairs of primers were designed to amplify the full-length genome of CK/CH/SD09/005. The nucleotide sequence of CK/CH/SD09/005 was compared with reference IBV strains retrieved from GenBank. The phylogenic relationship between CK/CH/SD09/005 and the reference strains was analyzed based on S1 gene sequences. The complete genome of CK/CH/SD09/005 consisted of 27691 nucleotides (nt), excluding the 5' cap and 3' poly A tail. The whole-genome of CK/CH/SD09/005 shared 97 - 99% nucleotide sequence homology with the GX-NN09032 strain, which was the only complete genome that was closely related to CK/CH/SD09/005. When compared with all reference strains except GX-NN09032, CK/CH/SD09/005 showed the highest similarity to ck/CH/LDL/091022 and SDIB821/2012 (QX-like) in the replicase gene (Gene 1) and 3'UTR, with a sequence identity rate of 97% and 98%, respectively. However, CK/CH/SD09/005 exhibited lower levels of similarity with ck/CH/LDL/091022 and SDIB821/2012 in S-3a-3b-3c/ E-M-5a-5b-N with a sequence identity of 72% - 90%. CK/CH/SD09/005 showed the highest level of nucleotide identity with Korean strain 1011, and Chinese strains CK/CH/LXJ/02I, DK/CH/HN/ZZ2004 and YX10, in ORF 3c/E (97%), 5a (96%), 5b (99%) and N (96%), respectively. ORFs 3a, 3b and M of CK/CH/SD09/005 exhibited no more than 90% homology with the reference strains, excluding GX-NN09032. The phylogenic analysis based on the S1 gene revealed that CK/CH/SD09/005 and 39 published strains were classified into seven clades (genotypes). CK/CH/SD09/005 was distributed in clade IV with several isolates collected between 2007 and 2012. CK/CH/SD09/005 showed 66% - 69% and 72% - 81% nucleotide identities with the IBV strains of other six clades in the S1 and S2 subunits, respectively. More over, multiple substitutions were found throughout the entire S gene of CK/CH/SD09/005, while insertions and deletions were located within the S1 gene. These results indicated that CK/CH/SD09/005 is a novel variant that may be derived from the QX-like strains that are prevalent in China. Multiple genetic mechanisms, including recombinations, mutations, insertions and deletions, are likely to have contributed to the emergence of this IBV strain.
Animals ; Chickens ; China ; Coronavirus Infections ; veterinary ; virology ; Genome, Viral ; Genomics ; Infectious bronchitis virus ; classification ; genetics ; isolation & purification ; Molecular Sequence Data ; Phylogeny ; Poultry Diseases ; virology ; Sequence Homology, Amino Acid ; Viral Proteins ; chemistry ; genetics

[ ABSTRACT] AIM: To investigate the protective effect of autophagy on oxidized low density lipoprotein ( ox-LDL)-induced macrophage apoptosis and the underlying molecular mechanisms .METHODS:The RAW264.7 macropha-ges were pretreated with 3 mmol/L 3-methyladenine (3-MA), 1 μmol/L rapamycin (Rap) or 4 mmol/L 4-phenylbutyric acid ( PBA) respectively for 1 h and then treated with ox-LDL (100 mg/L) for 12 h.The cell viability and apoptosis were determined by MTT assay and flow cytometry with Annexin V-FITC/PI staining, respectively.The activities of lactate de-hydrogenase ( LDH) in the medium and caspase-3 in the cells were determined by detection kits .The protein levels of bec-lin-1 (a molecular marker of autophagy ), glucose-regulated protein 78 (GRP78, an endoplasmic reticulum stress marker) and C/EBP homologous protein ( CHOP, a key-signaling component of endoplasmic reticulum stress-induced apoptosis ) were examined by Western blot .Microtubule-associated protein 1 light chain 3 (LC3, another molecular marker of autoph-agy) was observed under laser scanning confocal microscope .RESULTS: Treatment of the RAW264.7 macrophages with ox-LDL at 100 mg/L for 12 h resulted in significant decrease in cell viability , and dramatic elevation in LDH leakage , cell apoptosis and caspase-3 activity, which were promoted by 3-MA (an autophagy inhibitor) and inhibited by Rap (an autoph-agy inducer ) .ox-LDL induced autophagy in the macrophages as assessed by beclin-1 upregulation and frequent granulation of LC3, which were inhibited by 3-MA and promoted by Rap.Interestingly, 3-MA enhanced, while Rap blocked, the CHOP upregulation induced by ox-LDL.Moreover , PBA ( endoplasmic reticulum stress inhibitor ) significantly inhibited ox-LDL-induced GRP78 upregulation and autophagy as determined by the attenuation of beclin-1 upregulation and frequent granula-tion of LC3.CONCLUSION: Endoplasmic reticulum stress mediates ox-LDL-induced autophagy in macrophages , and moderates activation of autophagy may protect macrophages from ox-LDL-induced apoptosis by inhibiting CHOP expression .

OBJECTIVETo study the changes in gut microbiota and serum D-lactate level and their significance in children with recurrent pneumonia.

METHODSThe stool and blood samples were collected from 30 children with recurrent pneumonia (recurrent group), 30 children with acute pneumonia (acute group), and 15 children receiving surgical operation (surgery group). The 16S rRNA fluorescent quantitative polymerase chain reaction (FQ-PCR) was applied to determine the numbers of Bifidobacterium and Escherichia coli in stool samples, and the ratio between the logarithmic values of the numbers of Bifidobacterium and Escherichia coli (B/E value) was calculated. The serum D-lactate level was measured, and correlation analysis was performed.

RESULTSThe recurrent group had a significantly lower number of Bifidobacterium and a significantly lower B/E value than the acute group and the surgery group (P<0.05), as well as a significantly higher number of Escherichia coli than the surgery group (P<0.05). There was no significant difference in the number of Escherichia coli between the recurrent group and the acute group. The recurrent group had a significantly higher serum D-lactate level than the acute group and the surgery group (P<0.05). In the recurrent group, B/E value was negatively correlated with serum D-lactate level (r=-0.539, P<0.05).

CONCLUSIONSChildren with recurrent pneumonia may have biological and mechanical barrier damage in the intestinal mucosa.

Bacteria ; classification ; genetics ; isolation & purification ; Bifidobacterium ; genetics ; isolation & purification ; Child ; Child, Preschool ; Escherichia coli ; genetics ; isolation & purification ; Feces ; microbiology ; Female ; Gastrointestinal Microbiome ; Humans ; Lactates ; blood ; Pneumonia ; blood ; microbiology ; pathology ; Recurrence

OBJECTIVETo search for the best therapy for simple obesity.

METHODSEighty cases were randomly divided into 3 groups. The body acupuncture group were treated based on the syndrome of heat of stomach and intestine, syndrome of spleen deficiency and stagnation of dampness, and syndrome of spleen and kidney yang-deficiency; the auricular and body acupuncture group were treated by the syndrome treatment of body acupuncture combined with auricular point sticking; the observation group were treated by the combined auricular and body acupuncture treatment plus moving cupping on back-shu points. Body weight, BMI, body fatd, blood lipids and clinically main symptoms before and after treatment were investigated.

RESULTSThe total effective rate was 69.6% in the body acupuncture group, 76.0%. in the auricular and body acupuncture group, and 90.6% treated in the observation group, with significant differences in the therapeutic effect, clinically main symptoms, external indexes of obesity and kidney ang-blood lipid metabolism between the observation group and the body acupuncture group. The various indexes in the auricular and body acupuncture group were superior to those iwere tthe body acupuncture group, with no significant differences in most indexes.

CONCLUSIONAuricular and body acupuncture combined with moving cupping at back-shu points has obvious therapeutic effect on simple obesity and this is a better therapy for simple obesity.

Acupuncture Points ; Acupuncture Therapy ; methods ; Acupuncture, Ear ; methods ; Adult ; Cholesterol, LDL ; blood ; Female ; Humans ; Male ; Medicine, Chinese Traditional ; Obesity ; blood ; therapy

Objective To develop and optimize a module for the automatic production of N-succinimidyl-4-[18F] fluorobenzoate (18F-SFB) that is used for further 18F labelling C2A domain of Synaptotagmin Ⅰ . The conjugated compound was applied for detecting the tumor apoptosis in rabbit model after chemotherapy. Methods GE TRACERlab and TRACERlab FXF-N modules were modified and programmed to automatically produce 18 F-SFB which was further analyzed by high performance liquid chromatography (HPLC).C2A-glutathione S transferase (GST) was conjugated with 18F-SFB (18F-FB-C2A-GST) and subsequently purified by HPLC. Two rabbits grafted with VX2 lung cancer were first treated with chemotherapy and then,37 MBq of 18F-FB-C2A-GST was administered via the auricular vein. Serial PET/CT imagings were performed at 0.5, 1 and 2 h post-injection respectively. Tumor apoptosis was examined by pathological study. Results The TRACERlab FXFoG and TRACERlab FXF-N modules were successfully adapted to synthesize18F-SFB, with the radiochenmical yield (76.41 ±4.00)% (n = 10), the corrected yield (45.43 ±5.90 ) % and the radiochemical purity about 95%. The whole procedure for labeling 18 F-SFB was about 87 min.From PET/CT imagings, significant uptake was found in the tumor after chemotherapy, but no obvious up-take was found in heart, lungs and liver. HE staining demonstrated large number of apoptotic bodies within the tumor tissues. Conclusions 18 F-SFB can be automatically synthesized. 18F-FB-C2A-GST might be useful for the detection of apoptosis in tumor after chemotherapy.

BACKGROUNDThe identification of vulnerable plaques before rupture is an important clinical goal. The purpose of the present study was to assess the difference in plaque composition among patients with acute coronary syndrome (ACS) and stable coronary artery disease (SCAD) by intravascular ultrasound virtual histologic analysis.

METHODSOne hundred and thirty-nine patients were divided into ACS group and SCAD group according to clinical presentation. A total of 229 de novo lesions with >50% stenosis in native coronary arteries with diameters >2.5 mm were studied with intravascular ultrasonography. Geometric and compositional data were obtained using intravascular ultrasound virtual histology software.

RESULTSThere were no significant differences in overall lesions for fibrous ((52.0+/-11.9)% vs (54.3+/-8.5)%, P>0.05), fibrolipidic ((12.3+/-10.1)% vs (13.8+/-9.5)%, P > 0.05), calcium ((14.0+/-9.1)% vs (19.3+/-13.1)%, P>0.05), or necrotic core ((22.0+/-11.1)% vs (19.7 +/- 5.4)%, P > 0.05) percentages in ACS and SCAD patients, respectively. There were also no significant differences in culprit lesions for fibrous ((46.4+/-12.0)% vs (53.6+/-8.8)%, P>0.05), fibrolipidic ((9.1+/-9.0)% vs (12.9+/-9.7)%, P>0.05), calcium ((16.6+/-9.7)% vs (21.8+/-26.3)%, P>0.05), or necrotic core ((28.0+/-12.6)% vs (20.6+/-5.2)%, P>0.05) percentages in ACS and SCAD patients, respectively. High density lipoprotein-cholesterol levels >1.04 mmol/L were associated with more fibrolipidic ((14.5+/-10.4)% vs (7.1+/-6.5)%, P<0.05) and less necrotic core ((20.6+/-9.7)% vs (27.9+/-12.6)%, P<0.05) percentages in the cohort with ACS.

CONCLUSIONSIn this study, coronary plaque composition assessed by intravascular ultrasound virtual histologic analysis was not significantly different between ACS and SCAD patients. The anatomic relationship of the specific plaque components to the lumen of the vessel was more important than the quantitative information of plaque composition for plaque stability.

Acute Coronary Syndrome ; pathology ; Aged ; Cholesterol, HDL ; blood ; Cholesterol, LDL ; blood ; Coronary Artery Disease ; pathology ; Coronary Vessels ; pathology ; Female ; Humans ; Male ; Middle Aged ; Ultrasonography, Interventional