Genome, Human ; Genomics ; Humans ; Leukemia ; genetics ; Sequence Analysis ; methods

Objective To analyze the efficacy and safety of same-session bilateral and staged unilateral flexible ureteroscopic lithotripsy ( FURL) with holmium laser for the treatment of upper urinary system stones . Methods Clinical data of 29 patients who underwent same-session bilateral FURL ( same-session group ) and 20 patients who received staged unilateral FURL ( staged group ) from September 2012 to May 2015 at this hospital were analyzed retrospectively .The overall operation time ,overall hospital stay , stone free rate (SFR) and overall complication rate were compared between the two groups . Results The operations were successfully completed in both groups.The overall operative time was significantly longer for staged unilateral FURL than bilateral FURL [(71.0 ± 19.0) min vs.(112.6 ±26.8) min, t=-6.366, P=0.000].The overall hospital stay was slightly longer for staged unilateral FURL than bilateral FURL [(6.9 ±3.6) d vs.(8.4 ±2.1 ) d, t=-1.674, P=0.101].The four-week postoperative SFR for bilateral FURL and staged unilateral FURL were 79.3%(23/29) and 80.0%(16/20), respectively (χ2 =0.000, P=1.000).The overall complication rate was slightly higher for bilateral FURL [20.7% (6/29) vs.15.0% (3/20), χ2 =0.017, P=0.896]. Conclusion Same-session bilateral flexible ureteroscopic holmium laser lithotripsy is a safe and effective treatment for bilateral upper urinary system stones in select patients .

Objective:To establish a method of morphologic measurement of the mandibles and obtain the average values of three dimensional morphologic measurements of the mandibles .Methods: A me-thod of morphologic measurement of the mandibles was established firstly .The three dimensional CT data of 54 normal adult skulls were measured by this method .The data were analyzed by SPSS 13.0 statistical software.Results:In the study, 84 groups of mean values and standard deviations of the length , width, height, depth, thickness and angle of the mandibular contour in males and females were obtained .There were significant differences between the male and the female in the 66 of the 84 groups data , while the 16 of the 84 groups data had no significant differences and distributed symmetry on both sides of the mandi -bles .No correlation was found in the mandibular contour data in length , width , height and depth .Con-clusion:The characteristics of adult mandibular contours are different between males and females , indi-cating that each individual has its own morphologic features .

Objective To investigate the pathologic bases of MRI manifestations of rabbit VX2 hepatic carcinoma.Methods 32 foci of hepatic carcinoma models in 20 rabbits VX2 were set up by implantation.Plain MR examinations in all rabbits and contrast-enhanced MR scan in 10 rabbits(15 foci) were performed 2~4 weeks after implantation.The largest transverse section specimens of all the tumors were obtained for imaging-pathology comparative study after MR scan.Results All the 32 tumors were detectable on both T1WI and T2WI.The size of the tumors ranged from 0.5 to 3.5 cm in diameter.6 foci showed homogeneous slight hyperintense on T2WI,the other 26 showed characteristic intratumoral signal intensity on T2WI,including "nodule in nodule"sign in 5 foci,"target"sign in 7 foci,and "dot and color"sign in 14 foci.The characteristic intratumoral signal showed on T2WI were pathologically testified as necrotic tumor tissue of different structures.All the 15 tumors with contrast-enhanced scan appeared annular enhancement in different degrees,slight enhancement in 6,medium enhancement in 7 and obvious enhancement in 2.The sinusoidlike vascular space between tumor cells were significantly dilated in the obvious enhancement cases,and there were many spots of necrosis in the slight enhancement tumors under microscope.Conclusion The tectology of intratumoral necrosis can be evaluated by T2WI.Enhanced degree after administration of contrast agent in the hepatic cancer in rabbit model is associated with dilating degrees of sinusoidlike vascular space and number of dotted necrosis of tumors.

Objective To establish an analytical method to investigate the protective effect of reversed lipid-based nanoparti-cle(RLBN)for topotecan(TPT)in artificial intestinal fluid. Methods Reversed lipid-based nanoparticle of TPT(RLBN-TPT)was prepared by the two-step methods of lyophilization and dissolution. An analytical method was established to determine the concentra-tions of both forms of TPT by high performance liquid chromatography(HPLC). Release curve of RLBN-TPT in simulated intestinal flu-id(SIF)was investigated to study the stability of TPT in gastrointestinal(GI)fluid. Results Both lactone and carboxylate forms of TPT were well separated and determined precisely by the optimized HPLC method. The calibration curves were linear within the range of 0.25-5μg/ml for both forms of TPT. Compared with free TPT,RLBN-TPT significantly improved the stability of TPT in SIF as the per-centage of carboxylate form was remarkably lower than the free TPT(P<0.05). Conclusion RLBN can significantly protect the TPT from hydrolysis in GI,which may lay the foundation for the deuelopment of oral chemotherapeutic drug with higher bioavailability.

A commonly used Chinese crude drug Allii Macrostemonis Bulbus has been shown to possess good anticancer activities and related properties such as antioxidation, nitrite scavenging, nitrosamine synthesis blocking and immune enhancement, and has been widely used as an effective auxiliary drug in the treatment of some malignant tumors. This paper systematically reviews the advances in the study of anticancer-related activities of Allii Macrostemonis Bulbus's various components such as raw juice, extracts, saponins, volatile oil, polysaccharides, nitrogen compounds, etc.
Allium ; chemistry ; Animals ; Antineoplastic Agents, Phytogenic ; pharmacology ; Antioxidants ; pharmacology ; Humans ; Oils, Volatile ; pharmacology ; Plant Extracts ; pharmacology

Objective To study the safety over the atlanto-odontoid joint of the cervical spine during oblique-pulling manipulation.Methods The contact stress of the atlanto-odontoid joint in physiologic unstable conditions with and without pulling-and-extending of seven cadaveric specimans of cervical spine were observed with a biomechanical electric measuring apparatus and oblique-pulling device.Results The ratio of contact stress in pulling-and-extending condition,physiologic condition and pathologic condition is 1∶1.2∶9.4.Under normal physiologic condition,the stress in posterior extension is greater than that in anterior flexion,but less than in neutral position.Conclusion A better option of the manipulation position is to put the patient′s head at a slight flexion when a certain pulling-extending force is applied.In patient with severe degenerative changes of the cervical spine and unstability,the amplitude of rotation and the force of manipulation should be decreased.

Objective To investigate the clinical efficacy and indication of surgical treatment of L5S1 tuberculosis us?ing a medial edge of rectus abdominal muscle and retroperitoneal approach. Methods From Jan. 2010 to Nov. 2014, totally 18 cases of L5S1 tuberculosis were surgically cured by debridement, fusion and internal fixation via a medial edge of rectus ab?dominal muscle and retroperitoneal approach. There were 10 males and 8 females, with an average age of 35.6±10.1 years (21 to 55). The mean course of disease was 5.3±2.2 months. The primary destruction lesions were located at L5S1, and one patient of whom L4 was also involved, three cases S2 involved, and one S3 involved. Abscess pre sacrum was noticed in all cases. Six patients were combined with abscess in vertebral canal. Neural deficiency was detected in 3 patients, all grading as Frankel D. Dubousset's lumbosacral angle was 104°-126°, mean 114.6°±6.0°. Formal anti?tuberculosis medicine treatment was given for at least 2-3 weeks. All patients were treated using a medial edge of rectus abdominal muscle and retroperitoneal approach. Af?ter debridement, a tri?cortical iliac bone was used for structural inter?vertebrae fusion. The iliac bone was fixed to the sacrum by one cortical screw. Operation time, volume of blood loss, and surgery complications, including wound infection, looseness and shift of internal fixation, sinus occurrence, vascular injury, retrograde ejaculation in male patients were evaluated. The X?ray and 3D CT of lumbosacral spine, together with ESR and CRP were used to evaluate the control of tuberculosis during fol?low?up. The Dubousset's lumbosacral angle, visual analogue score, and the Frankel grade were compared between preoperative and postoperative. The bone graft fusion were also observed. Results The operation time was 147±16 min in average. The mean blood lose was 275 ± 77 ml. No vascular or neurological injury was noticed. There was also no retrograde ejaculation happened in this group. All patients were followed up from 18 to 28 months. Dubousset's lumbosacral angle was 122.4°±3.8° post?operatively and 121.4°±3.7° at the final follow?up. There was a significant difference between the lumbosacral angles pre and post operation, whereas no statistical difference between the post operation and the final follow?up. Bone fusion was noticed in all cases. All pa? tients have intact neurological function at the final follow?up. No screw breakage or graft bone migration occurred. VAS was 5.6± 1.09 pre?operation and 0.83±0.71 at the 3rd month's follow?up, and there was a significant difference between them. Conclusion Surgical treatment of L5S1 tuberculosis by debridement, fusion and internal fixation via a medial edge of rectus abdominal muscle and retroperitoneal approach is an effective method in terms of minimal trauma, low rate of modality, good ability in restore and maintenance of lumbosacral junction alignment and high fusion rate.

PurposeIt is important to keep the consistency of CT perfusion imaging (CTP) measurement in the evaluation of intracranial disorders. The purpose of this paper is to probe into the consistency of basal ganglia hemodynamic characteristics in normal rabbits with CTP measurement in the mode of volume helical shuttle (VHS).Materials and Methods Brain CTP scans of 10 healthy rabbits were carried out in the VHS mode. The images derived from CTP were separately analyzed by two radiologists (A and B) with different experiences. ROIs were placed in the bilateral basal ganglia of the subjects and parameters such as cerebral blood volume (CBV), cerebral blood flow (CBF) and mean transit time (MTT) were measured three times in each rabbit. Thirty days later, radiologist A analyzed the CTP images again with the same method. Differences of parameters in bilateral basal ganglia measured by different radiologists at different periods were compared respectively and consistency of the measurements was further assessed.Results There was no significant difference among the three measurements of CBV, CBF and MTT in bilateral basal ganglia (F=0.162, 0.050 and 0.488,P>0.05). TheICC of CBV, CBF and MTT measured by the two radiologists for the first time were 0.84, 0.81 and 0.79; while theICC of CBV, CBF and MTT measured by radiologist A twice were 0.80, 0.89 and 0.84, which showed that the results had good consistency measured by different radiologists at different times.Conclusion With the same post-processing software, the consistency of CTP of basal ganglia in the VHS mode is satisfactory in healthy rabbits, which suggests this technique may be a suitable means in the evaluation of basal ganglia hemodynamics in animal models.

Objective To observe the diffusion characteristics and pathology changes with DTI in rabbit models with mild cerebral contusion and laceration (CCL). Methods Thirty rabbits were randomly selected and made into models of mild CCL by free fall, while other 10 rabbits were cut only in the skull as control. T2WI and DTI were performed 1, 3, 6, 12, 24, 48 and 72 h after the operation. DTI value of average diffusion coefficient (DCavg) and fractional anisotropy (FA) of mild CCL and its peripheral area were measured and compared. Histological examination was also performed. Results One hour after operation, CCL area showed high signal on T2WI, and no abnormal signal was found in the peripheral area, but both had abnormal color on DTI map. T2WI signal intensity in peripheral area of 22 rabbits (73.33%) increased gradually and had much abnormal color on T2WT map after 3 h. There was significant difference of FA and DCavg between CCL and the mirror region, the peripheral area and the mirror region (P<0.05). The value of FA decreased slightly since 12 h. More prominent tissue necrosis, edema and hemorrhage were found in CCL area than in the peripheral area with pathology examination. No abnormal manifestations of the brain were detected with both pathology and MR examination in the control rabbits. Conclusion DTI is sensitive for detecting mild CCL and can show it directly on color map, and thus may be used as a routine examination in the evaluation of mild CCL.