Myelodysplastic syndromes (MDS) comprises a heterogeneous group of malignant disorders. it has been purified clonal hematopoietic stem cell disorder from the initial initial dysplasia hematopoietic syndrome.The diagnosis of MDS has changed from completely morphological diagnosis to multi-parameter diagnosis. In this review, the laboratory examination and diagnosis technology of MDS are discussed.

ObjectiveTo study the effect of electromygraphic biofeedback on upper extremity function in patients with hemiplegia after stroke.Methods79 patients were randomly divided into experimental group(40 cases) and control group(39 cases).Patients in each group were given clinical treatment and regularly physical therapy, while those in experimental group were given electromygraphic biofeedback training. All patients were evaluated with electromyography amplitude and active range of motion(AROM) of wrist dorsiflexion and upper extremity Fugl-Meyer assessment pre-treatment and 3 months after stroke.ResultsAll the patients gained improvement after treating(P<0.05).Compared with the controls, patients in experimental group significantly improved their function in all measured item(P<0.01).ConclusionThe electromygraphic biofeedback can improve the arm function of hemiplegic patients.

Objective To investigate the effects of endaravane on hypoxia-ischemia (HI)-induced brain injury in neonatal piglets. Methods Male piglets 3-7 days old weighing 2.0-3.0 kg were used in this study. Group Ⅰ 10 piglets were randomly collected as sham operation without HI. Twenty piglets with HI were randomly divided into 2 groups (n = 10 each) : group Ⅱ HI and group Ⅲ HI + endaravone. The animals were anesthetized with intraperitoneal pentobarbital sodium 50 mg/kg, tracheostomized and mechanically ventilated with 30% O_2. Right femoral artery and vein were cannulated. MAP, HR, PET CO_2, blood gases and glucose and rectal temperature were monitored. After 15 min stabilization cardiac arrest was induced by inhalation of hypoxic air (O_2 10%) for 40 min followed by inhalation of 21% O_2 for 5 min. The tracheal tube was then occluded for 7 min. Cardio-pulmonary resuscitation (CPR) was then started until recovery of spontaneous circulation (ROSC). CPR > 3 min was considered a failure. A bolus of endaravone 3 mg/kg was given iv over an hour at 30 min after CPR,followed by continuous infusion at 1.5 mg·kg~(-1)·h~(-1) for 5.5 h in group Ⅲ , while in group Ⅱ vehicle was given instead of endaravone. The neurological function of the animals was evaluated at 48, 72 and 96 h after ROSC and scored (0-154, 0 = normal, 154 = severest dysfunction). The animals were killed at 96 h after ROSC. The brains were removed for microscopic examination of striatum and cortex and determination of 8-hydroxy-2'-deoxyguanine (8-OHdG/OHG) expression in putamen by immuno-histochemistry. Results The neurological function scores were significantly higher at 48 h after ROSC and the number of viable neurons in striatum and sensory cortex were significantly lower and the expression of 8-OHdG/OHG in putamen was significantly higher in group Ⅱ than in group Ⅲ . Conclusion The antioxidant endaravone given after CPR can attenuate Hl-induced brain injury by inhibiting oxidative damage to DNA and RNA.

Objective To investigate the effects of midazolam on hypoxic-ischemic (HI) brain injury in neonatal piglets.Methods Twenty-four newborn male piglets 3-7 days old weighing 1.8-3,0 kg were randomly divided into 3 groups ( n = 8 each): sham group (group S), HI + normal saline group (group HI-S) and HI + midasolam group (group HI-M). The animals of group HI-S and HI-M were subjected to 7 min of hypoxia, producing asphyxic cardiac arrest, followed by cardiopulmonary resuscitation. At 3 h after restoration of spontaneous circulation (ROSC), animals received i.v. infusion of fentanyl at a rate of 10-30 μg·kg-1·h-1 and pancuroniumat a rate of 0.1-0.2 mg·kg-1·h-1 from 3 h after ROSC to 24 h after ROSC to maintain the anesthesia. In addition, midazolam at a rate of 0.05 mg·kg-1·h-1 wee infused simultaneously until 24 h after ROSC in HI-M group, while the equal volume of normal saline was infused instead in group HI-S and S. Arterial blood samples were taken before hypoxia (baseline), and at 37 min of hypoxia, 5 min of air inspiration, 5 min of asphyxia and 6, 12, and 24 h after ROSC for blood gas analysis, and MAP was monitored at the each time point. Neurological behavior was assessed and scored (NBS) at 48, 72, 96 and 240 h after ROSC. Brains were removed at 10 h after ROSC, the remaining viable neurons in putamen and candate nucleus were counted and the density of viable neurons was determined using light microscopic examination. Results PaO2 was significantly decreased during hypoxia-eephyxia, and PaCO2 was significantly increased, while pH value and MAP were significantly decreased at 5 min of asphyxia in group HI-S and HI-M compared with group S and the baseline (P < 0.05).There were no significant differences in MAP and arterial blood gas analysis at the each time point between group HI-S and HI-M ( P > 0.05). The density of viable neurons in putamen and caudate nucleus was significantly lower, and NBS at 48-96 h after BOSC significantly higher in group HI-S and HI-M than in group S ( P < 0.05). The density of viable neurons in putamen and caudate nucleus was significantly higher and NBS at 72 and 96 h after ROSC significantly lower in group HI-M than in group HI-S ( P < 0.05). Conclusion Midazolam used at the early stage of cardiopulmonary resuscitation can attenuate HI brain injury in neonatal piglets.

Pancreatic cancer is one of common malignant tumors in the digestive system.There is still no effective means for the early diag-nosis of pancreatic cancer.As a mixture of oral gland secretion and oral mucosal transudate,saliva contains abundant biological information including microorganisms,proteins,and nucleic acids,which will change when the disease occurs.So saliva can be used for the early diag-nosis of pancreatic cancer.Through summarizing and analyzing the current studies and advantages of its application for early diagnosis,this article suggests that saliva bioinformatics holds promise for the application in the early diagnosis of pancreatic cancer.

Objective To summarize the experiences of Nuss procedure with thoracoscope for repairing pectus excavatum.Methods 21 cases of pectus excavatum were treated by Nuss procedure with thoracoscope.In these patients,10 had symmetric pectus excavatum and 11 had asymmetric one.Results The operation in all patients were successful.The mean operating time wag(70.7±9.6)min and the mean intraoperative blood loss was(20.3±10.9)ml.The average hospital length of stay was(5.3±1.1)days,the average durante dolors was(6.9±4.0)days.The exceUent rate was 81.0%(17/21),including 90.0%(9/10)in symmetric pectus excavatum and 72.7%(8/11)in asymmetric pectus cxcavatum.Conclusion Nuss procedure is easy to perform,with minimal invasion,short operating time,and less blood loss.Nuss procedure is suitable for the symmetric pectus excavatum.

Objective To understand serological detection results of syphilis among hospitalized patients in a gen-eral hospital,and provide new ideas for further prevention and treatment of syphilis. Methods Clinical data of inpa-tients with abnormal serological detection results for syphilis in a hospital from January 2012 to December 2013 were analyzed. Results A total of 164442 patients were admitted to a hospital from January 2012 to December 2013, 112576 of whom were performed syphilis serological screening,2048 cases were with abnormal results of serologi-cal detection for syphilis. The abnormal serological detection results were mainly in patients of 31~ and 41~ years (39.06% ),followed by patients of 51~,61~ years (34.42% ),and≥71 years (15.63% );unemployed people (34.08% ),farmers(23.05% ),and retirees(19.19% )were the main population with abnormal results. The abnor-mal serological detection results distributed in all 36 departments,the main departments were departments of respir-atory medicine(9.86% ),gynaecology(7.13% ),and cardiovascular internal medicine(6.88% ). Non-marital sex is the main route of transmission(56.79% );the main syphilis serological detection results were both positive for Treponemapallidum particle agglutination (TPPA)assay and rapid plasma reagin (RPR)(46.14% ),as well as TPPA positive and RPR negative (43.31% ). 860 (41.99% )patients were with latent syphilis. Conclusion The current status of patients with abnormal serological detection results of syphilis is not optimistic, mainly concentrated in patients of 31-50 years. It is necessary to strengthen publicity and education on prevention and treatment of syphilis,implement syphilis prevention and treatment policy,intensity syphilis screening,so as to pre-vent the epidemic and spread of syphilis.

Objective To establish an infection model using Caenorhabditis elegans (C.elegans)-extensively drug-resistant Klebsiella pneumoniae (XDRKP)system.Methods Clinically isolated XDRKP strains were used to infect C.elegans in the liquid killing assay,the nematode survival and the number of bacteria in C.elegans digestive tract was observed.Results C.elegans was significantly retarded after being infected by XDRKP,different concentra-tions of XDRKP led to different patterns of the worm death.Log-rank test showed that survival curves of C. elegans infected with 1 .5×106 CFU/mL of XDRKP and E.coli OP50 (control)were not significantly different (χ2 =0.08,P >0.05);survival curves of C.elegans infected with 1 .5 ×107 CFU/mL,1 .5 ×108 CFU/mL of XDRKP and E.coli OP50 were significantly different(χ2 =229.37,275.98,respectively,both P <0.001).The survival rates of 1 .5×108 and 1 .5 ×107 CFU/mL XDRKP groups were both lower than that of the control group.Supernatant suspension obtained from test was performed bacterial culture,identification and antimicrobial susceptibility testing, XDRKP was determined.After being infected with XDRKP 4,6,12,and 24 hours,the total number of bacteria in C.elegans were(0.28±0.02)×105 CFU/mL,(0.50 ±0.38)×105 CFU/mL,(1 .73 ±0.56)×105 CFU/mL,and (2.62±0.53)×105 CFU/mL,respectively,the number of bacteria in C.elegans digestive tract was significantly different at different time points (F =1 363.39,P <0.001).Conclusion The infection model of C.elegans-XDRKP is established successfully.

The infection caused by pseudomonas aeruginosa biofilm has becoming one of the most urgent problems in hospital.Recent reports of possible mechanism of iron in biofilm formation were reviewed in this paper.The possible effects of iron on adsorption,microcolony formation,mature of colony and desorb were explained,and the prospect of clinical use of local iron or chelator spray was also reviewed here.