Animals ; Antineoplastic Agents ; pharmacology ; therapeutic use ; Brain Neoplasms ; drug therapy ; secondary ; Breast Neoplasms ; drug therapy ; metabolism ; pathology ; Cell Proliferation ; drug effects ; Humans ; Quinazolines ; pharmacology ; therapeutic use ; Receptor, Epidermal Growth Factor ; metabolism ; Receptor, ErbB-2 ; metabolism

Objective To study the manifestations of perfusion change in small heptic cell cancer(SHCC) on dynamic contract-enhanced MRI. Methods 18 cases of SHCC(21 lesions) proved by pathology were presented. Dynamic contrast-enhanced MRI was performed using 2D T_1-turbor-FLASH sequence for 18 SHCC.Results Among all 18 cases of SHCC, 17 cases were obvious enhanced, and one case was no enhancement. In 17caese of enhanced tumors, the maximal peak of enhancement was in the first set (6~23 s) in 2 cases and in the second set (33~51 s) in 15 cases. The average maximal peak of contrast-enhanced time was 42.5 s(23~50.5 s),and the average maximal peak of signal intensity increased up to 30.5 (19.5~45.0). The pattern of time-intensity curve was rapid wash-in followed by washout in 17 cases.Conclusion Dynamic contract-enhanced MRI is important on study and diagnosis of SHCC.

Objective: To observe the clinical efficacy of acupuncture plus rehabilitation training in treating post-stroke deglutition disorders of qi-deficiency blood stasis pattern. Methods: Sixty-six patients with post-stroke deglutition disorders of qi-deficiency blood stasis patter were divided into an observation group and a rehabilitation group using the random number table method. The two groups both received conventional medications and supportive treatment for stroke. In addition, the observation group received acupuncture plus rehabilitation training while the rehabilitation group only received the same rehabilitation training. The interventions were conducted 3 times a week for a total of 4 weeks in both groups. They were evaluated using Kubota water swallowing test (KWST), Fujishima Ichiro food intake level scale (FILS) and symptoms score of traditional Chinese medicine (TCM) before and after treatment, and at the 1-month follow-up. The therapeutic efficacy was assessed at the 1-month follow-up. Results: The KWST grading and FILS result after treatment and at the follow-up were significantly different from those before treatment in both groups (all P<0.001); the results of these two items at the follow-up were not significantly different from those after treatment in the two groups (all P>0.05). There were significant differences in the KWST grading and FILS result between the two groups after treatment and at the follow-up (all P<0.05). The TCM symptoms score changed significantly after treatment and at the follow-up compared with that before treatment in both groups (all P<0.001). The TCM symptoms grading efficacy at the follow-up was significantly different from that after treatment in the observation group (P<0.05), while the difference was statistically insignificant in the rehabilitation group (P>0.05). The TCM symptoms grading efficacy in the observation group was significantly different from that in the rehabilitation group after treatment and at the follow-up (both P<0.05). Conclusion: Based on the conventional treatment for stroke, acupuncture plus rehabilitation training or use of rehabilitation training alone both can improve the clinical symptoms in post-stroke deglutition disorders of qi-deficiency blood stasis pattern, but acupuncture plus rehabilitation training can produce more significant efficacy and better long-term efficacy in improving TCM symptoms.

Objective To observe the early clinical effect of single kidney transplantation from cardiac death pediatric donors to adult recipients. Methods Clinical data of 6 single kidney transplantations from cardiac death pediatric donors in adult recipients in Department of Organ Transplantation ,Guangdong Province No.2 People′s hospital were retrospectively analyzed. the transplant operations were carried out between January 2010 to may 2016.The median age of 6 pediatric donors was 9 years (5 years to 15 years). All recipients had the same blood type. The median age of 12 recipients was 38 years (21 years to 65 years),with 4 man and 8 women. All recipients received kidney transplantation for the first time,and overall reactive antibodies(PRA) were negative,with HLA mismatch between 1to 4. All recipients received single kidney transplantation in right fossa iliaca. Results 12 kidney transplantations were successful. The renal allografts recovered successfully without acute renal rejection , delayed graft function or primary nonfunction. Renal function of 5 of recipients immediately recovered in 5 days,5 recovered in 10 days,and 2 recovered slowly. 1 recipient manifested urine leak and recovered after drainage. 1 case developed delayed incision healing and recovered after dressing at stage II. All patients and renal grafts functions were wellnormal during follow?up period between 1 month to 36 months. Conclusion The early clinical effect of single kidney transplantation from cardiac death pediatric donors to adult recipients is good and could be a promising pathway to expand the organ donor sources.

Carbon nanotubes/Au nanoparticles ( CNT/AuNP ) composite film was fabricated on glassy carbon electrode ( GCE) by first dropping CNTs on the electrode surface and then electrodeposition of AuNPs by multi-potential step. The antibody of microcystin-( leucine-arginine ) ( anti-MCLR ) was immobilized on the modified electrode surface through adsorption on AuNPs. Subsequently, bovine serum albumin ( BSA) was used to block the non-specific adsorption to obtain the immunosensor for MCLR assay. The immunosensor could effectively capture MCLR by the specific immunoreaction between the electrode surface-confined antibody and MCLR, followed by the attachment of the anti-MCLR HRP-labeled to form a sandwich-type system. The analysis of MCLR was performed based on the catalytic reaction of HRP toward the oxidation of hydroquinone ( QH2 ) by H2 O2 . Under the optimal experimental conditions, the peak current response increased linearly with the concentration of MCLR in the range of 0 . 50-12 μg/L with a detection limit of 0. 30 μg/L (S/N=3). The developed immunosensor was used to determine MCLR in real water samples, and the recoveries of standard addition experiments were in the range of 93 . 0%-108 . 5%, with the relative standard deviation of 3 . 8%-5 . 0%.

Objective To analyze the incidence and risk factors of de novo hepatitis B virus (HBV) infection from anti-HBc-positive donors in pediatric living donor liver transplantation and to explore the diagnosis and treatment.Method A retrospective analysis was conducted on 105 cases of pediatric living donor liver transplantaions (LT) perfomed during September 2006 to December 2013.HBV markers,including hepatitis B surface antigen (HBsAg) and antibody (anti-HBs),anti-HBc,hepatitis B e antigen (HBeAg) and antibody (anti-HBe) were determined in both donors and recipients before LT and in recipients after LT.HBV DNA titer was measured if the recipients were strongly suspected of de novo HBV infection.Result After 4 perioperative deaths were excluded,101 cases were studied.The median follow-up period of all the patients was 20.5 months (2.7-97.7 months).de novo HBV infection occurred in 6 of 101 recipients (5.9％) 3.5 18 months after LT.Forty-four (43.6％) of the children received HBcAb-positive allografts,and 11.4％ (5/44) of the children were had de novo hepatitis B infection.All five of the HBV-infected children received HBcAb-positive allografts without preventive treatment in 11 cases (5/11,45.5 ％),57 (56.4％) of the children received HBcAb-negtive allografts,and 1.7％ (1/57) of the children had de novo hepatitis B infection.Conclusion Anti-HBc-positive donors can significantly increase the incidence of de novo HBV infection in HBsAg-negative recipients without preventive treatment.with the appropriate treatment strategy,HBcAb allografts can safely used in pediatric recipients.

Objective To evaluate the safety and clinical effect of ABO-incompatible (ILT) pediatric living donor liver transplantation.Method We analyzed 169 pediatric living donor liver transplantation recipients from Sept.20,2006 to Dec.31,2014.There were 16 ABO-incompatible liver transplantation cases.The median age was 6 months.The blood agglutitin titer was monitored.The titer was controlled lower or equal to 1 ∶ 16.The method to decrease blood agglutitin titer included IVIG and plasma exchange.The patients were treated with Tacrolimus combined with methylprednisolone.Basiliximab for injection was used.The patients were followed-up for 9-26months.The survival rate,acute rejection,vascular and biliary tract complications,and infection were monitored.Result All the patients survived.There was once case of acute rejection,1 case of bile duct dilatation,2 cases of portal vein stenosis,8 cases of EBV viremia,5 cases of CMV viremia,and 6 cases of lung infection.The liver functions of all the 16 recipients were recovered within 3 weeks.Conclusion ABO-incompatible liver grafts can be used safely in pediatric patients.

OBJECTIVE: Liquid chromatography-tandem mass spectrometry (LC-MS/MS) was developed for the determination of opiates in biological samples according to the emerging problem in drugs abuse. METHODS: Opiates such as heroin, 6-acetylmorphine, morphine, codeine, acetylcodeine, hydrocodone and hydromorphone were isolated from human blood, urine, oral fluid and hair using a simple extraction and consequently analyzed using LC-MS/MS. The method was evaluated by real cases. RESULTS: The mobile phase give the optimum separation for opiates. The detection limit of morphine in urine with dilution and liquid-liquid extraction and in hair is 10ng/mL, 0.01 ng/mL and 0.01 ng/mg, respectively. CONCLUSION The method is simple and rapid, offering superior sensitivity and selectivity for opiates. The target compounds comprising hydrocodone and hydromorphone enlarge the applied area.
Chromatography, Liquid ; Codeine/analysis* ; Forensic Medicine/methods* ; Hair/chemistry* ; Humans ; Hydrocodone/analysis* ; Hydromorphone/analysis* ; Morphine/analysis* ; Narcotics/analysis* ; Reproducibility of Results ; Saliva/chemistry* ; Substance Abuse Detection/methods* ; Tandem Mass Spectrometry

OBJECTIVE: To establish an inductively coupled plasma mass spectrometry (ICP-MS) method for determination of Hg in biological samples. METHODS: The samples were digested with microwave digestion instrument. ICP-MS was applied to detect Hg in blood, urine and hair specimens by using 115In as an internal marker. The ability of gold to eliminate the memory effect of mercury was investigated with the gold amalgamate produced by gold and mercury. RESULTS: The limits of detection were in the 0.01 microg/L, and the accuracy of the method ranged from 97.0% to 107.1%. The concentration of gold was 10 microg/L and the memory effect of mercury was resolved. CONCLUSION The method is accurate, rapid, sensitive and suitable for the cases of mercury poisoning and the clinical diagnosis and monitoring for patients with mercury poisoning.
Forensic Toxicology ; Hair/chemistry* ; Humans ; Indicators and Reagents ; Mass Spectrometry/methods* ; Mercury/urine* ; Mercury Poisoning/diagnosis* ; Microwaves ; Reference Standards ; Reproducibility of Results ; Sensitivity and Specificity ; Specimen Handling/methods*

Brown-Sequard Syndrome ; diagnosis ; diagnostic imaging ; etiology ; surgery ; Cervical Vertebrae ; Humans ; Intervertebral Disc Displacement ; complications ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Tomography, X-Ray Computed