Thioredoxin-related protein 14 (TRP14),a new member of Trx family,is a novel disulfide reductase with conservative CPDC motif.Its structure and function are comparable to Trx,which is the representative member of Trx family.However,there are many differences.When tumor necrosis factor-α (TNF-α) induced cells to produce the active oxygen,TRP14 can change oxidatin state of dynein light chain(its substrate),act as a sensor of the intracellular redox state to regulate NF-κB signaling pathways induced by TNF-α,MAPK and apoptosis signaling pathways.

Objective:To investigate the antitumor activity of the compound HS-4 and the action mechanism.Methods:MTT method was used to testin vitroantitumor activity of the compound HS-4. Orthotopic xenotransplantation tumor model of liver cancer was established in nude mice, and,in vivoantitumor activity of compound HS-4 was tested with a small animal in-vivo imaging system. Sequencing of small RNA library and RNA library was performed in HS-4 treated tumor cell group and control group to investigate the anti-cancer mechanism of HS-4 at level of functional genomics, using high-throughput sequencing technology. Results:HS-4 was found to have relatively highin-vitro antitumor activity against liver cancer cells, gastric cancer cells, renal cancer cells, lung cancer cells, breast cancer cells and colon cancer cells. The IC50 values against SMMC-7721 and Bel-7402 of liver cancer cells were 0.14 and 0.13 nmol/L respectively, while the IC50 values against MGC-803 and SGC-7901 of gastric cancer cells were 0.19 and 0.21 nmol/L, respectively. It was demonstrated that HS- 4 possessed a better therapeutic effect in liver cancer.Conclusions: A new reliable orthotopic xenotransplantation tumor model of liver cancer in nude mice is established. The new compounds HS-4 was found to possess relatively highin vivo andin vitroantitumor activity against liver cancer cells.

Objective To observe the dynamic serological test results of 28 patients with acute brucellosis,and to investigate the relationship between serological test results and diagnosis,curative effect and prognosis of brucellosis.Methods Twenty eight patients(infected with sheep brucellosis) with acute brucellosis in the Department of Brucellosis in Heilongjiang Provincial Land Reclamation Headquarters General Hospital were selected as research subjects,and their serological changes were tested by means of tube agglutination test (SAT)and clinical outcomes were compared before and after each stage of treatment.In addition,symptoms of fever,weakness,sweating,joint pain,swollen lymph nodes and biochemical parameters [alanine aminotransferase (ALT),lactate dehydrogenase (LDH)] were also tested 3,6 and 9 weeks after the treatment.Results Antibody titer reached the peak at the third week,1 ∶ 400(++),which accounted for 39.29％ (11/28); 2857％(8/28) of the patients became negative at the sixth week; 50.00％ (14/28) became negative at the ninth week.Before the treatment,20(71.43％) patients had the symptom of fever,8 (28.57％) patients had the symptom of hyperhidrosis,28 (100.00％) patients had the symptom of joint pain,7(25.00％) patients had the symptom of lymph node enlargement,28 (100.00％) patients' ALT was elevated,and 26(92.86％) patients' LDH was elevated.After three weeks of treatment,except the three patients (10.71％) who occasionally had fever,the rest of the patient's temperature was returned to normal.Also the numbers of patients with the symptoms of fatigue,sweating and joint pain were significantly reduced,and specifically,the conesponding number was 13(46.43％),2(7.14％),and 21 (75.00％)patients,respectively.ALT and LDH returned to normal(only one patient's ALT was out of the range).At the sixth week,all the patients' symptoms of fever and hyperhidrosis disappeared.The number of patients with the symptoms of joint pain and lymph node enlargement reduced to 12(42.86％) and 3(10.71％),respectively.The results of biochemical tests(ALT and LDT) returned to normal.At the ninth week,most patients' clinical symptoms disappeared.A few patients still had the symptoms of weakness[2(7.14％)] and joint piin[6(21.43％)].Conclusions After effective treatment,antibody titer of patients decreases rapidly,at the same time,the clinical symptoms improve quickly.There is a parallel relationship between the change of antibody titer and clinical symptoms.It is demonstrated that the appearing time of brucellosis specific antibodies,the ampfitude and speed of change of antibody titers can be used in diagnosis,therapeutic evaluation and prognosis of the disease.

Objective To observe the clinical features of brucellosis spondylitis and analyse the reasons for its misdiagnosis,and improve the level of diagnosis and differential diagnosis.Methods Forty-two clinically diagnosed patients with brucellosis spondylitis were studied retrospectively,and these patients were diagnosed and hospitalized in the General Hospital of Heilongjiang Land Reclamation Bureau.Their medical records were analyzed,which included the general information,medical history,clinical symptoms,results of magnetic resonance imaging(MRI) and serum tube agglutination test(SAT) and so on.Results Main clinical symptoms and signs were severe persistent neck,back and leg pain.They also had plate shape low back but without kyphosis.In addition,patients had to keep in one posture because their spinal activity was limited.Also,scoliosis or pelvic tilt and lameness may occur when standing,which were typical symptoms of nerve root compression.Thirteen cases were diagnosed as tuberculosis,accounting for 30.95％(13/42); 6 cases were diagnosed as lumbar disc herniation,accounting for 14.28％ (6/42); 2 cases were diagnosed as ankylosing spondylitis,accounting for 4.76％ (2/42).Therefore,the total rate of misdiagnosis was 50％ (21/42).Abnormal MRI signal intensity can be seen in the pathological vertebrae.Specifically,T1-weighted images (T1WI) showed low signal,T2-weighted images (T2WI) showed high signal,or mixed high and low signal intensity was observed.Vertebral showed wedge deformation without collapse and sequestrum; strip and sheet abnormal signal can also be found within the intervertebral disc.Normal structure disappeared and disc space became narrow.Accordingly,the plane dural sac was compressed to form visible abscess near the spine,but psoas abscess was not found.Patients with positive SAT result accounted for 92.85％ (39/42).Conclusion Reasons for misdiagnosis include lack of detailed medical records,atypical clinical symptoms and similar imaging changes and so on.

OBJECTIVE:To establish a method for determining recombinant human calmodulin B subunit(rhCNB)in rat plas-ma,and study its pharmacokinetics characteristics. METHODS:ELISA double-antibody sandwich method was adopted. 1 μg/ml rhCNB monoclonal antibody mAb was wrapped,added to the to-be-test sample,rhCNB polyclonal antibody pAb(dilution ratio of 1∶5 000)and HRP-labeled conjugate of anti-IgG(dilution ratio of 1∶10 000)were added. Using tetramethylbenzidine for develop-ing,microplate reader was conducted in wavelength of 450 nm to determine the absorbance value(OD value)and plasma concen-tration of 6 rats after 2,15,30,60,120,240,480,720 min of iv 2.5 mg/kg rhCNB,and the pharmacokinetic parameters were calculated by BAPP 3.0 software. RESULTS:The linear range of rhCNB were 0.195-12.5 ng/ml(r2=0.995 0),lower limit of quan-titation was 0.195 ng/ml,accuracy were 97.300%-103.622%(RSD<7.5%,n=6);RSDs of within-batch,inter-batch,freezing and thawing 3 times were no higher than 8.5%(n=6,18,15). rhCNB pharmacokinetics characteristics in rat fitted to two-com-partment model,AUC0-720 min was 173.038 mg·min/L and t1/2 was 94.62 min. CONCLUSIONS:The established method has high specificity and sensitivity,good accuracy and precision,which can be used for rhCNB quantitative detection and pharmacokinetics study in biological samples.

OBJECTIVE: To explore an approach to distinguish avulsion fracture of articular portion from anatomic separated epiphysis. METHODS: 21 cases with suspicioned avulsion fracture of articular portion of tubular bone were reviewed. The cortical continuity of separate small bone and contiguous bone portion was investigated. The swell of soft tissue around these small bones was observed simultaneously. Then the configuration of the fracture was researched by injury mechanics. RESULTS: Continued bone cortex between separate small bone and corresponding bone was seen in 15 cases, so they were considered as a separate epiphysis. Sharp linear fracture between the separate small bone and corresponding bone were seen in 6 cases. The swell of soft tissue around the separate small bone was observed in all cases, so they were considered as a avulsion fracture. CONCLUSION The meticulous investigation of separated small bone at the articular portion by image observation is of important value for distinguishing avulsion fracture from anatomic separate epiphysis.
Adolescent ; Adult ; Aged ; Ankle Injuries/diagnostic imaging* ; Epiphyses/diagnostic imaging* ; Epiphyses, Slipped/diagnostic imaging* ; Female ; Forensic Medicine ; Fractures, Bone/diagnostic imaging* ; Humans ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Retrospective Studies ; Tomography, X-Ray Computed ; Young Adult

Objective To investigate the clinical manifestations, pathologic features, treatment and prognosis of oncogenic osteomalacia (OO). Methods A 17-year-old male patient was admitted.The patient presented with a 4-year history of progressive lower limb weakness, muscle atrophy and joint pain. Lab tests demonstrated hypophosphatemia. Lumbar and pelvic X-ray showed wedging of the lumbar spine and decreased pelvic bone density. Ultrasonography revealed a low-echo and bloodrich mass measuring 15.1 cm× 14.5 cm× 13.2 cm located at the lower pole of left kidney. Computed tomography showed a voluminous enhanced tumor, supplied by the left renal artery, vice renal artery and a branch of the inferior mesenteric artery. A tortuous vein at the lower part of the tumor drained into the left renal vein. A radioactive octreotide scan was used to study an increased radionuclide-uptake lesion which was initially suspected on the CT scan. The patient was preoperatively diagnosed with left malignant kidney tumor and oncogenic osteomalacia. During a left radical nephrectomy performed through a transperitoneal anterior subcostal incision, a round diameter 15 cm tumor covered by twisted veins was found. The patient recovered well postoperatively. Results The histological diagnosis was renal clear cell carcinoma. Immunohistochemical staining detected Vimentin and RCC were positive and Ki-67antigen index was about 2 %. After lesion removal, the paraneoplastic syndrome resolved. At the 11-month follow-up, no recurrence of the disease was observed. Conclusions Oncogenic osteomalacia is rare and OO with renal cell carcinoma has not been reported so far. OO or rickets should be suspected in those patients who presented with metabolic bone disease associated with hypophosphatemia and inappropriate phosphaturia. If OO syndrome was suspected, in addition to past medical history and imaging, a standard meticulous examination should be initiated promptly. Surgical treatment is still necessary once confirmed. And all of them achieved a good prognosis.

OBJECTIVEThe aim of this study is to investigate the occurrence and mechanism of Cheyne-Stokes breathing pattern in patients with heart failure.

METHODSFifty-six patients who performed polusomnography sleep testing at National Center of Cardiovascular Diseases Fuwai Hospital from March to May in 2015. We divided them into chronic heart failure (CHF) group and non-CHF group.

RESULTSThe occurrences of sleep apnea in two groups were high. In CHF group (n = 11) , there were 10 patients with apnea hypopnea index (AHI) > 5; and their AHI was 23.93 ±14.63. In non-CHF group (n = 45), there were 33 patients whose AHI > 5; and their AHI was 16.20 ± 18.76. The ratio of center sleep apnea to all gross sleep apnea ratio in CHF group was higher than that in non-CHF group (80.21% ± 30.55% vs 27.16% ± 35.71%, P < 0.01 ).

CONCLUSIONBased upon the new theory of holistic integrative physiology and medicine, we explain the mechanism of circulatory dysfunction induce the oscillation breathing in patients with CHF. The sleep apnea and C-S respiration in CHF should be called circulatory sleep apnea, rather than central sleep apnea.

Objective:To investigate the effect of segmental Le FortⅠosteotomy and bilateral sagittal split ramus osteotomy ( BSSRO ) on the condyle position in skeletal class Ⅲ malocclusion patients . Methods:In this retrospective study , 19 patients with skeletal class Ⅲmalocclusion who met the inclu-sion criteria were enrolled .All the patients underwent the segmental Le FortⅠ osteotomy and BSSRO . Cone beam computed tomography ( CBCT) scans were performed in the following phases:T1:within one week before the surgeries;T2:within one week post-surgery;T3:three months post-surgery;T4:6 to 14 months post-surgery .The posterior spaces , anterior spaces and the superior spaces of the bilateral tem-poromandibular joints were measured according to the Kamelchuk method respectively .The fossa ratios of the condyle and the distribution of the condyle positions related to the glenoid fossa ( anterior , concentric and posterior position ) were calculated .The results were analyzed statistically .Results:The posterior space , the anterior space and the superior space of bilateral temporomandibular joints in T 2 phase [ right:(2.78 ±1.23) mm, (2.47 ±0.89) mm, (3.07 ±0.85) mm; left: (2.93 ±0.83) mm, (2.69 ± 1.14) mm, (3.44 ±1.16) mm] showed significantly larger spaces than those in T 1 phase [right:(1.81 ±0.95) mm, (1.65 ±0.55) mm, (2.13 ±0.52) mm;left:(2.12 ±1.05) mm, (1.79 ±0.59) mm, (2.15 ±0.93) mm],in T3 phase [right:(2.08 ±1.25) mm, (1.79 ±0.68) mm, (1.80 ±0.76) mm;left: (2.05 ±0.75) mm, (1.99 ±0.94) mm, (2.14 ±0.71) mm] and in T4 phase [right:(1.94 ±0.77) mm, (1.81 ±0.69) mm, (2.05 ±0.69) mm;left:(1.89 ±0.69) mm, (1.80 ±0.61) mm, (2.19 ±0.75) mm], P<0.05.No significant differences were observed among T 1,T3 and T4 pha-ses in the terms of the joint spaces of both sides ( P >0.05).The fossa ratio and the condyle position related to the glenoid fossa had no significant difference in all the four phases (P>0.05).The results suggested that the condyle moved downward in T 2 phase and changed to the original pre-surgery position in T3 phase, then keot stable in T4 phase.Conclusion:Segmental Le FortⅠ osteotomy and BSSRO caused significant and transient changes of the condyle position in skeletal class Ⅲmalocclusion patients . However , the condyle tended to move back to the original pre-surgery position and might keep stable .

Emerging evidence has indicated that circular RNAs (circRNAs) play pivotal roles in the regulation of cellular processes and are found to be aberrantly expressed in a variety of tumors.However,the clinical role of circRNAs in bladder cancer (BC) and the molecular mechanisms have yet to be fully understood.In this study,the clinical specimens were obtained and the expression level of a circRNA BCRC4 was detected by real-time PCR in both BC tissues and cell line.The circular RNA over-expression plasmid was constructed and transfected into BC cells and related cell line.The cell cycles and apoptosis were observed using inverted microscope and flow cytometry.Western blotting was used to compare the relative protein expression of groups with different treatments.It was found that circRNA BCRC4 expression was lower in BC tissues than in adjacent normal tissues.Furthermore,consequences of fomed-expression of BCRC4 promoted apoptosis and inhibited viability of T24T and UMUC3 cells,and up-regulated BCRC4-inereased miR-101 level,which suppressed EZH2 expression in both RNA and protein levels.In addition,gambogic acid (GA) is a promising natural anticancer compound for BC therapy,and GA treatment increased the BCRC4 expression in T24T and UMUC3 cells in a dose-dependent manner.Altogether,our findings suggest that BCRC4 functions as a tumor suppressor in BC,and mediates anticancer function,at least in part,by up-regulating the expression of miR-101.Targeting this newly identified circRNA may help us develop a novel strategy for treating human BC.