There were many factors that affect the chimerism of donor DNA, such as the type of disease, the treatment of the disease, the severity of the disease, the source of hematopoietic stem cells, HLA, GVHD, and so on. This paper mainly discussed the two factors that affect forensic science, including the posttransplantation intervals and sensitivity of the detection method. Forensic workers in forensic practice and paternity and individual identification of allo HSCT recipients, should pay attention to the time after transplantation and the detection method of sensitivity of chimerism. When female recipients received HSCT in the case of male donors, Y chromosome DNA of the donor can be detected from the recipient's hair follicles. The case of biological specimens from the crime scene can not only detect Y chromosome speciifc genetic markers, so as to avoid wrong identiifcation.

AIMTo study the preparation conditions and its oral pharmacokinetic characteristics of cyclosporine A (CyA) pH sensitive nanoparticles.

METHODSThe CyA pH sensitive nanoparticles were prepared by the quasi-emulsion solvent diffusion technique (QESD). Male Sprague-Dawley (SD) rats weighing (250 +/- 20) g were selected and randomly divided into five groups. The bioavailability of CyA from nanoparticles and Neoral microemulsion were assessed at a dose of 15 mg x kg(-1) by gavage. The concentration of CyA in whole blood samples was detected by HPLC to evaluate the relative bioavailability of CyA pH sensitive nanoparticles.

RESULTSThe blood concentration profiles of CyA pH sensitive nanoparticles in rats fitted to two compartment models using 3P87 pharmacokinetic calculation program. Compared with the Neoral microemulsion, the relative bioavailability of CyA was 94.8%, 115.2%, 113.6% and 132.5% for CyA-E100, CyA-L100, CyA-L100-55 and CyA-S100 nanoparticles respectively.

CONCLUSIONCyA-S100 nanoparticles was shown to significantly improve the oral bioavailability of CyA compared with Neoral microemulsion (P < 0.05). While there were no significant differences between Neoral microemulsion and other CyA pH sensitive nanoparticles. With these results, the potential of pH-sensitive nanoparticles for the oral delivery of CyA was confirmed. Furthermore, this formulation approach can be used to improve the oral bioavailability of other poorly soluble and poorly absorbable drugs.

Administration, Oral ; Animals ; Area Under Curve ; Biological Availability ; Cyclosporine ; administration & dosage ; pharmacokinetics ; Hydrogen-Ion Concentration ; Male ; Nanostructures ; Random Allocation ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo investigate the volatile fatty acids in gingival crevicular fluid (GCF) and to analyze the relationship between the levels of the volatile fatty acids and chronic periodontitis.

METHODSGCF samples taken from 37 patients with chronic periodontitis and 16 volunteers with healthy periodontal status were analyzed by capillary electrophoresis.

RESULTSThe detection frequencies and concentrations of succinic acid, butyric acid and valeric acid were significantly higher in GCF of chronic periodontitis than in that of healthy group. The detection frequencies of propionic acid had no statistic difference between the two groups, but the concentrations of it was significantly higher in inflammation group. We also found that the concentrations of succinic acid, propionic acid and butyric acid were significantly lower in shallow pockets than that in deep pockets.

CONCLUSIONSThe volatile fatty acids, especially succinic acid, propionic acid, butyric acid and valeric acid were associated significantly with the severity and inflammation of periodontal disease. The levels of succinic acid, propionic acid and butyric acid in GCF were related to pocket depth.

Adult ; Aged ; Butyrates ; analysis ; Case-Control Studies ; Chronic Periodontitis ; metabolism ; Electrophoresis, Capillary ; Fatty Acids, Volatile ; analysis ; Female ; Gingival Crevicular Fluid ; metabolism ; Humans ; Male ; Middle Aged ; Periodontium ; metabolism ; Propionates ; analysis ; Succinic Acid ; analysis

Objective Midkine ( MK ) and nuclear factor-kappa B ( NF-kB ) play pivotal roles in tumorigenesis, which are considered as promising cancer biomarkers. The efficacy of MK and NF-kB as markers for diagnosis and prediction of synchronous metastasis in papillary thyroid cancer ( PTC ) was the aim of present investigation. Methods Seventy six cases of PTC and seventy cases of multi-nodular goiter ( MNG ) were retrieved. The PTC group was further divided into subgroup 1 (16 cases with synchronous metastasis) and subgroup 2 (60 cases without metastases). A retrospective review of clinical information, radiological examinations,131 I treatments and post-131 I-therapy scans were done. Immunohistochemistry of MK, NF-kB p65, and Ki-67 was performed on paraffin-embedded specimens and results were quantified. Diagnostic values of the parameters were conducted by receiver operating characteristic (ROC) curves. Diagnostic sensitivity, specificity, accuracy, positive predictive value, and negative predictive value were determined. Protein levels of MK and NF-kB p65 were then confirmed by Western blot. Results Immunoreactivities of MK and NF-kB p65, and positive percentage of Ki-67 were significantly higher in PTC group than in MNG group (all P<0. 01). ROC showed good differential diagnostic capabilities of all three parameters with diagnostic accuracies of 82. 192% , 80. 137% , and 84. 091%respectively. Moreover, all three parameters were significantly higher in subgroup 1 than those in subgroup 2 (all P<0. 01). ROC showed good predicting efficacies in synchronous metastasis of all three parameters with diagnostic accuracies of 82. 895% , 80. 263% , and 76. 316% respectively. By one-way analysis of variance, Western blot showed that MK and NF-kB p65 protein levels in lesions from subgroup 1 were significantly higher than those from subgroup 2, both were significantly higher than those in MNG lesions ( P<0. 01). Conclusion MK and NF-kB immunohistochemistry can potentially be used for differential diagnosis between PTC and MNG, and for prediction of synchronous metastases.

OBJECTIVETo investigate the effect of S-allyl-L-cysteine (SAC) on isolated rat heart subject to ischemia/reperfusion(I/R) injury and the mechanisms.

METHODSThe isolated perfused rat hearts on a Langendorff apparatus were subjected to global ischemia for 30 min and followed by 120 min of reperfusion. Hemodynamic index, the production of formazan and the level of lactate dehydrogenase (LDH) in the coronary effluent were determined. Superoxide dismutase (SOD) and reactive oxygen species (ROS) in myocardial homogenates were measured.

RESULTSCompared with I/R group, the hemodynamics were greatly improved, the production of formazan was increased, and LDH level in effluent was reduced in SAC group. SAC improved the SOD activity and significantly decreased the level of ROS. In addition, threonine (Thr) attenuated the protective effect of SAC significantly.

CONCLUSIONSAC has protective effect against myocardial ischemia/reperfusion injury on rats. The possible mechanism is that SAC be transported into the cell through alanine-serine-cysteine-transporter 1 (ASCT-1) improves SOD activity and reduces the level of ROS.

Animals ; Cysteine ; analogs & derivatives ; pharmacology ; In Vitro Techniques ; Male ; Myocardial Ischemia ; physiopathology ; Myocardial Reperfusion Injury ; physiopathology ; prevention & control ; Protective Agents ; pharmacology ; Rats ; Rats, Sprague-Dawley ; Reactive Oxygen Species ; metabolism ; Superoxide Dismutase ; metabolism

Adolescent ; Adult ; Aged ; Cardiomyopathy, Hypertrophic ; surgery ; Catheter Ablation ; methods ; Child ; Follow-Up Studies ; Heart Septum ; surgery ; Humans ; Middle Aged

Objective Tolearntheparents'acceptanceofchargevaccinesandtheinfluencingfactors.Methods Totally 1869 parents with children of 0 -6 years old were selected with typical sampling and were investigated face to face.The awareness,acceptanceandinfluencingfactorsandservicedemandswereanalyzed.Results Therewere80.20%ofthe parents willing to give their children the charge vaccination.Compared with the local residents group,the other province resident group and other city resident group had a low probability to have charge vaccination (OR=0.777,OR=0.530). Parents who usually concerned about vaccine information were more likely to be vaccinated with charge vaccine (OR =1.307).Compared with other inoculation station,the stations which parents enjoying convenient service have higher inoculationrate(OR=1.673).Conclusion Mostparentshaveacceptedthechargevaccinationfortheirchildren. Health information and service quality of vaccination station are important influencing factors for accessibility of charge vaccination.

Objective To analyze the clinical characteristics and diagnosis of neurosyphilis. Methods A retrospective study was conducted among 36 patients with neurosyphilis treated in our hospital between February, 2002 and November, 2008. The clinical classification, clinical features, misdiagnosis, laboratory findings of the eerebrospinal fluid (CSF), and findings in magnetic resonance imaging (MRI) of the patients were analyzed. Results The patients aged between 30 and 78 years (mean 48.1 years), and male subjects were more frequently affected than female subjects. Meningovaseular syphilis was the most common type (50%) of the disease, followed by general paresis (27.8%) and asymptomatie neurosyphilis (11.1%). The most common symptoms ofneurosyphilis are mental disorders and dementia, followed by focal neurological dysfunction such as paralysis and dysarthria. Misdiagnoses of neurosyphilis, most frequently as viral encephalitis and cerebrovascular accidents, occurred in 55.6% of the patients. CSF examination revealed increased leukocyte count and protein levels. The positivity rate of Treponema pallidum particle agglutination assay of the CSF was91.7%, significantly higher than that of Venereal Disease Research Laboratory (VDRL) test (55.6%) and CSF-ELISA-TP-IgM test (38.9%) (P<0.05). The MRI findings were diverse in these patients. Conclusion No golden standard has been available for the diagnosis ofneurosyphilis, which has diverse clinical manifestations and nonspecifie MRI findings. The presence of Treponemal antibody in the CSF is highly supportive for the diagnosis, which can be established after a comprehensive analysis of the laboratory and clinical evidences.

BACKGROUNDBoth ischemic preconditioning (IPC) and limb remote ischemic postconditioning (LRIPOC) have been shown to possess significantly different cardioprotective effects against the myocardial ischemia reperfusion injury (IRI), but no study has compared the anti-inflammatory effects of IPC and LRIPOC during myocardial IRI process. We hypothesized that IPC and LRIPOC would produce different anti-inflammatory effects in an in vivo rat model with myocardial IRI.

METHODSEighty rats were randomly allocated into four equal groups: sham group, IRI group, IPC group and LRIPOC group. In 10 rats randomly selected from each group, serum levels of TNF-α, HMGB1, ICAM1, IL-1, IL-6 and IL-10 were assessed, and infarct size was determined. In another 10 rats of each group, myocardial levels of TNF-α, HMGB1, ICAM1, IL-1, IL-6 and IL-10 in both ischemic and non-ischemic regions were measured.

RESULTSThe infarct size was significantly lower in IPC and LRIPOC groups than in IRI group. The serum and myocardial levels of pro-inflammatory cytokines including TNF-α, HMGB1, ICAM1, IL-1 and IL-6 during reperfusion were significantly reduced in IPC and LRIPOC groups compared to IRI group. As compared to the IPC group, infarct size, serum level of TNF-α at 60 minutes of reperfusion, serum levels of HMGB1 and ICAM1 at 120 minutes of reperfusion, myocardial levels of TNF-α, ICAM1, IL-1 and IL-6 in the ischemic region, myocardial levels of ICAM1, IL-1 and IL-6 in the non-ischemic region were significantly increased in the LRIPOC group.

CONCLUSIONSIn the rats with myocardial IRI, IPC produces more powerful inhibitory effects on local myocardial and systemic inflammatory responses than LRIPOC. This may be partly attributed to more potent cardioprotection produced by IPC.

Animals ; HMGB1 Protein ; metabolism ; Intercellular Adhesion Molecule-1 ; metabolism ; Interleukin-1 ; metabolism ; Interleukin-10 ; metabolism ; Interleukin-6 ; metabolism ; Ischemic Postconditioning ; methods ; Ischemic Preconditioning ; methods ; Male ; Myocardial Reperfusion Injury ; immunology ; metabolism ; therapy ; Rats ; Rats, Sprague-Dawley ; Tumor Necrosis Factor-alpha ; metabolism

AIMTo study the effect of modified starfish sterol [C03, succinic acid (5-epiandroene-17-one-3beta-ol) diester] on experimental arrhythmias.

METHODSArrhythmias were induced by drugs (Aco, Oua, BaCl2 and adrenalin) i.v., ligating the left anterior descending coronary artery and electricity.

RESULTSC03 71.4 mg x kg(-1) (ig) was shown to increase the dose of Oua inducing VP, VT, VF and CA in guinea pigs (P < 0.01); C03 (26.8, 80.4 mg x kg(-1)) was found to increase the dose of Aco inducing VF and CA in rats (P < 0.01); C03 (8.9, 26.8, 80.4 mg x kg(-1)) increase the dose of barium chloride and delay the onset time of ventricular arrhythmias (P < 0.01); C03 (14.1, 42.3 mg x kg(-10) shorten time of recovering induced by adrenalin in rabbits (P < 0.01); C03 (80.4 mg x kg(-1)) was shown to reduce the number of ventricular arrhythmias induced by coronary artery ligation in rats (P < 0.05), C03 increase VFT induced by electricity in rabbits, VFT of C03 14.1 mg x kg(-1) increased from (5.1 +/- 2.5) V to (11.0 +/- 2.7) V (P < 0.01), 42.3 mg x kg(-1) increased from (6.1 +/- 1.7) V to (15 +/- 5) V (P < 0.01).

CONCLUSIONStarfish sterol has anti-arrhythmic effect.

Aconitine ; Animals ; Anti-Arrhythmia Agents ; therapeutic use ; Arrhythmias, Cardiac ; chemically induced ; physiopathology ; prevention & control ; Barium Compounds ; Cats ; Chlorides ; Epinephrine ; Guinea Pigs ; Materia Medica ; isolation & purification ; therapeutic use ; Mice ; Ouabain ; Rabbits ; Rats ; Starfish ; chemistry ; Sterols ; isolation & purification ; therapeutic use ; Ventricular Fibrillation ; physiopathology