Objective To evaluate the CT and MRI characteristics of Primary Central Nervous System Lymphoma(PCNSL)in immunocompetent patients,and enhance its diagnosis level.Methods CT and MRI data of 20 patients with PCNSL confirmed by histo-pathology were analyzed retrospectively.MRI scans were performed with and without Gadolinium contrast.Two of them had contrast-enhanced CT scan;six had CT scan without contrast administration;1 had CT scan with both non-contrast and contrast enhancement.Re- suits Totally,38 lesions were found in all patients:14 lesions of them were single and 24 lesions were found in 6 patients.Generally,the lesions were located in the surface and/or midline of the brain.The signal features and density were similar to meningioma,and strongly enhancing after contrast administration.Thirty-six of the 38 lesions had spicular sign peripheral to the lesion.Conclusion Although the manifestations of the PCNSL are variety,there are still many characteristics in the medical imaging,especially in the locations,the signal features,and spicular sign in the edge of the lesions after contrast material injection.

OBJECTIVETo observe the characteristic of the fMRI brain map in patients undergoing needling at Zusanli (ST36) by reinforcing method for exploring the essence of Meridian-Collaterals and the mechanisms of acupuncture in treating diseases.

METHODSTwenty-six healthy volunteers were randomly assigned to two groups by double blinded method, 16 in the acupoint group and 10 in the non-acupoint group. Using GE Signa 1. 5 T superconducting MRI system, the fMRI was performed with Gradient echo-EPI sequence. Post-processing of fMRI data was performed using the Functool software (GE-ADW4.0) to generate positive correlation coefficient brain functional activating images and the data was analyzed statistically using SPSS 13.0 software.

RESULTSBrain functional area was elicited in 13 out of the 15 patients in the acupoint group and 10 in the non-acupoint group. Among them, the temporal elicited area in the acupoint group showed specificity (Fisher's Exact test, P = 0.022) and only the difference in contralateral hemisphere activation rate was of statistical significance (McNemer test, P = 0.020).

CONCLUSIONAcupoints has its own specific brain activated areas. The therapeutic effect of acupoint might be mediated through brain to treat diseases and regulate functional disorder of organs. There exists special transmission channel of meridian.

Acupuncture ; methods ; Acupuncture Points ; Adult ; Brain ; physiology ; Brain Mapping ; Double-Blind Method ; Female ; Humans ; Magnetic Resonance Imaging ; methods ; Male

AIMTo study the pharmacokinetics of spinosin in rat plasma after oral administration of Suanzaoren extract using sulfamethoxazole (SMZ) as internal standard by RP-HPLC method.

METHODSPlasma samples were deproteined with acetonitrile, followed by evaporation of the acetonitrile to dryness. The residual was then resolved in mobile phase and HPLC separation was achieved on a Hypersil C18 (5 microns, 200 mm x 4.6 mm ID) column at 35 degrees C. The mobile phase consisted of acetonitrile-water-acetic acid (15:85:1) at a flow rate of 0.7 mL.min-1. The UV detection wavelength was set at 334 nm.

RESULTSThe calibration curve was shown to be linear over the range from 18.1 to 903.5 micrograms.L-1 (r2 > or = 0.995). Mean recovery was 94.5%. Within-day and between-day precisions RSD were less than 9.0%. The limit of quantitation was 18.1 micrograms.L-1. The plasma spinosin was stable at -20 degrees C.

CONCLUSIONThe simple, sensitive and accurate HPLC method developed has been applied to determine the pharmacokinetics of spinosin in rat plasma after having taken Suanzaoren extract at a single dose.

Administration, Oral ; Animals ; Chromatography, High Pressure Liquid ; methods ; Drugs, Chinese Herbal ; administration & dosage ; isolation & purification ; pharmacokinetics ; Flavonoids ; blood ; isolation & purification ; pharmacokinetics ; Plants, Medicinal ; chemistry ; Rats ; Rats, Wistar ; Seeds ; chemistry ; Ziziphus ; chemistry

OBJECTIVETo explore the effects of arecoline on hepatic insulin resistance in type 2 diabetes rats and to elucidate its possible mechanism.

METHODSForty five Wistar rats were fed with high fructose diet for 12 weeks to induce type 2 diabetic rat model. rats were randomly divided into 5 groups (n = 8): control group, model group and model group were treated with different dose (0, 0.5, 1, 5 mg/kg) of arecoline. After 4 weeks, the fasting blood glucose, blood lipid and insulin level measured , mRNA expression of liver constitutive androstane receptor (CAR), pregnane X receptor (PXR), glucose-6-phosphatase (G6Pase), phosphoenolpyruvate carboxykinase (PEPCK), interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-alpha) were detected by reverse transcription polymerase chain reaction (RT-PCR), the protein expression of p-AKT and glucose transporter4 (GLUT4) were detected by Western blot.

RESULTS1.5 mg/kg arecoline could significantly decrease the level of fasting blood glucose, blood lipid, blood insulin level and liver G6Pase, PEPCK, IL-6, TNF-alpha mRNA level in type 2 diabetes rats. 1.5 mg/kg arecoline also could significantly increase CAR, PXR mRNA level and p-AKT and GLUT4 protein expression.

CONCLUSIONArecoline improved hepatic insulin resistance in type 2 diabetes rats by increasing the mRNA levels of CAR and PXR leading to the creased glucose metabolism and inflammation related genes expression.

Animals ; Arecoline ; pharmacology ; Diabetes Mellitus, Experimental ; metabolism ; Diabetes Mellitus, Type 2 ; metabolism ; Glucose Transporter Type 4 ; metabolism ; Glucose-6-Phosphatase ; metabolism ; Insulin Resistance ; Interleukin-6 ; metabolism ; Intracellular Signaling Peptides and Proteins ; metabolism ; Liver ; drug effects ; metabolism ; Male ; Phosphoenolpyruvate Carboxykinase (GTP) ; metabolism ; Proto-Oncogene Proteins c-akt ; metabolism ; Rats ; Rats, Wistar ; Receptors, Cytoplasmic and Nuclear ; metabolism ; Receptors, Steroid ; metabolism ; Tumor Necrosis Factor-alpha ; metabolism

Background Age-related cataract is one of the common causes of blindness.Although the pathophysiology of age-related cataract is far from clearly understood,it is well accepted that DNA damage plays an important role in the disease pathogenesis.Objective The purpose of this study was to quantitatively evaluate the DNA damage in peripheral lymphocytes of age-related cataract.Methods A cross-sectional study was carried out.This study complied Declaration of Helsinki and approved by Ethic Committee of Affiliated Hospital of Nantong University.Written informed consent was obtained from each subject.Two hundred and eleven patients with agerelated cataract and 147 normal subjects were enrolled from a “ Jiangsu Eye Study:Funing 2011 Eye Disease Epidemic Survey”.All the subjects aged from 50 through 80 years with matched age and gender between the two groups.The percentage of tail DNA and Olive tail moment (OTM) were detected by comet assay to assess the extent of DNA damage in peripheral lymphocytes.Statistical analyses were performed with SPSS 17.0 software,and the differences of the percentage of tail DNA and OTM were compared between the age-related cataract group and normal control group by independent sample t test as well as among the 50-59 years group,60-69 years group and ≥70 years group by one-way analysis of variance.Results Comet assay showed a round lymph cell with the clear border in the normal group;while in the age-related cataract group,the cell was bigger with a comet-like tail.The percentage of tail DNA and OTM in peripheral lymphocytes were (21.75 ± 3.51) ％ and 6.54 ± 1.65 in the age-related cataract group,and those in the normal control group were (9.31 ±3.60)％ and 2.18 ± 1.10,respectively,with significant differences between them (t =32.67,P =0.00 ; t =28.02,P =O.00).In the 50-59 years subgroup of the age-related cataract group,the percentage of tail DNA and OTM in peripheral lymphocytes were (20.04±2.86) ％ and 5.92± 1.14,and in the 60-69 years subgroup of the age-related cataract group,the percentage of tail DNA and OTM in peripheral lymphocytes were (20.77 ±2.93) ％ and 6.13 ± 1.14,which were significantly reduced in comparison with (22.79 ± 3.67)％ and 6.95±1.91 of the ≥70years subgroup(TailDNA％:q=2.75,P=0.00; q=2.02,P=0.00;OTM:q=1.03,P =0.02 ; q =0.82,P =0.00).Conclusions The pathogenesis and development of age-related cataract probably is associated with DNA damage.

It is a challenging and important project to prolong the in vivo half life of protein and peptide drugs by physicochemical methods without new molecular entities generation. Protein crystallization provides a new strategy for improving the stability and in vivo delivery of these drugs. We show here that recombinant human interferon-alpha (rhIFN) can form spherical crystals. The physical and chemical features of the crystals were characterized, and drug dissolution was determined in vitro. The pharmacokinetics of crystallized interferon after sc injection in rabbit at 1.5 x 10(7) U x kg(-1) was compared to that of soluble form. The crystals were characterized as mono-dispersed spheres, with yield of > 80%, mean diameter size of about 16 microm and crystallinity of 23.2%. The in vitro dissolution behavior of crystallized rhIFN was featured as low initial burst release (21% within the first 2 h) and prolonged cumulative dissolution time up to 72 h without biological potency lost. After sc administration of soluble and crystallized interferon in rabbits, the peak time (T(max)) and half life (t1/2) were prolonged from (1.80 +/- 0.45) h and (1.35 +/- 0.35) h to (13.20 +/- 2.68) h and (10.68 +/- 1.97) h, respectively. The corresponding peak concentration decreased from (1 411.10 +/- 575.28) U x mL(-1) to (721.37 +/- 206.55) U x mL(-1). PK/PD analysis indicated that (96.87 +/- 20.30) % of relative bioavailability was obtained. The research results of this work will provide important academic value and application prospect for improving clinical therapeutic effect and development of biomacromolecules delivery system for protein and peptide drugs.
Animals ; Antiviral Agents ; administration & dosage ; chemistry ; pharmacokinetics ; Biological Availability ; Crystallization ; Delayed-Action Preparations ; Drug Delivery Systems ; Half-Life ; Humans ; Injections, Subcutaneous ; Interferon-alpha ; administration & dosage ; chemistry ; pharmacokinetics ; Male ; Rabbits ; Recombinant Proteins ; administration & dosage ; chemistry ; pharmacokinetics ; Solubility ; Surface Properties

OBJECTIVETo study the relationship between the infection of human papillomavirus (HPV) and external genital squamous cell carcinoma in situ.

METHODSHPV DNA was detected with the consensus primer by polymerase chain reaction (PCR) and its type was determined by restriction fragment length polymorphism (RFLP).

RESULTSHPV DNA was detected and HPV16 was the most frequently identified type in 29 (56.9%) of 51 cases of external genital squamous cell carcinoma in situ. HPV DNA was positive in 22 (55%) of 40 cases of bowenoid papulosis, among which 20 were of HPV16 type, one of HPV31 type, and one of HPV6 + 16 type. HPV DNA was positive in all 5 cases (100%) of Bowen's disease, among which 4 were HPV16 type and one of HPV6 + 16 type. HPV DNA was positive in 2 (33.3%) of 6 Queyrat erythroplasia cases and all were of HPV16 type.

CONCLUSIONHPV16 infection is strongly associated with the external genital squamous cell carcinoma in situ including bowenoid papulosis, Bowen's disease, and Queyrat erythroplasia.

Adult ; Aged ; Bowen's Disease ; virology ; Carcinoma in Situ ; virology ; Carcinoma, Squamous Cell ; virology ; DNA Probes, HPV ; DNA, Viral ; analysis ; Erythroplasia ; virology ; Female ; Genital Neoplasms, Female ; virology ; Genital Neoplasms, Male ; virology ; Humans ; Male ; Middle Aged ; Papillomaviridae ; isolation & purification ; Papillomavirus Infections ; virology ; Penile Neoplasms ; virology ; Polymorphism, Restriction Fragment Length ; Tumor Virus Infections ; virology ; Vulvar Neoplasms ; virology

OBJECTIVETo analyze clinical information and efficacy of 602 cases of nevus of Ota, and investigate the histopathology and ultrastructure on the melanocytes before and after Q-switched Alexandrite laser irradiation.

METHODSClinical information of 602 cases of nevus of Ota were collected by applying clinical records, checking photos, and inquiry to patients by letters and telephones. Ten cases of biopsies were observed by light microscopy and 6 cases by electron microscopy before and after laser irradiation.

RESULTSNevus of Ota included congenital and acquired cases. Skin lesions mainly occurred in adolescence for the acquired cases. The main colours of lesions were brown and blue. The most local lesions were zygomata, temporal regions, and lower eyelids. According to multiple regression, the more treatment times, the better results. The effective rate was 85.20% and 100% after 6 and 9 treatment times, respectively, while the cure rate was 55.72% and 98.46%, respectively. The eyelids involved and Tanino types influenced the treatment times by COX models analysis. Electron microscopy showed many melanosomes in the dermal melanocytes. After laser irradiation, the outlines of the dermal melanocytes were observed, the melanosomes were broken to dense and tiny granules.

CONCLUSIONSQ-switched Alexandrite laser is safe and effective for the treatment of nevus of Ota. The results of treatment are correlated with the area and size of the lesion. The dermal melanocytes in nevus of Ota can be selectively destroyed by Q-switched Alexandrite laser with less injury around tissues.

Adolescent ; Adult ; Child ; Child, Preschool ; Female ; Humans ; Infant ; Infant, Newborn ; Laser Therapy ; Male ; Melanocytes ; ultrastructure ; Melanosomes ; radiation effects ; ultrastructure ; Nevus of Ota ; radiotherapy ; ultrastructure ; Skin ; ultrastructure ; Skin Neoplasms ; radiotherapy ; ultrastructure

The distribution information of Cistanche deserticola was collected by interview investigation and field survey, and 55 related environmental factors were collected, the habitat suitability study was conducted based on geographic information system (GIS) and Maximum entropy model. The AUCs of ROC curve were both above 0.9, indicating that the predictive results with the maxent model were highly precise. The results showed that 14 major environmental factors have obvious influence on ecology suitability distributions of C. deserticola, including vegetation type et al, the suitable distribution areas are mainly concentrated in the central of Alxa Youqi, the north of Alxa Zouqi and the south-east of Ejin Banner, including Tamusu towns, Alateng towns et al, The zoning results basically coincide with the genuine producing areas, and further afford new suitable distribution areas, which can provide reference for the siting of introduction and cultivation of C. deserticola.
China ; Cistanche ; growth & development ; Ecosystem ; Environment ; Geographic Information Systems ; Rain ; Soil ; chemistry ; Temperature

Neoadjuvant chemoradiotherapy followed by surgery is the standard treatment for patients with locally advanced rectal cancer. Controversy on whether patients should receive radical surgery after pathological complete response (pCR) after neoadjuvant chemoradiotherapy has remained since pCR patients have shown favorable long-term outcome. Progress in multidisciplinary modalities has been made, including MRI, PET/CT imaging studies, genetic expression profiling, etc. The methods of predicting pCR response are inspiring. In this article, we review the methods for prediction and prognostic effect of pCR response when patients with locally advanced rectal cancer are treated with neoadjuvant chemoradiotherapy.
Chemoradiotherapy ; Humans ; Neoadjuvant Therapy ; Rectal Neoplasms ; therapy ; Remission Induction ; Treatment Outcome