Bilateral sequential cataract surgery is very common in clinical,but the ophthalmologists often ignore how to choose the timing of operation and whether the first eye can be used to improve the intraocular lens (IOL) power calculation for the second one.Despite the refinements in IOL selection with the use of third-generation IOL formulas,5％ of eyes still result in a postoperative refractive surprise of ± 1.00 D or more.This paper introduced the methods of using refraction error of the first eye to improve the IOL power calculation for the second eye,and the refractive error of the second eye can be improved by modifying the IOL power to correct up to 50％ of the error from the first eye in details.Because of the variation of the postoperative refractive surprise within a month,the interval of three to four weeks between two eyes cataract surgery is highly recommended.These conclusions may provide the advantageous guidance for us in the selection of IOL in bilateral cataract surgery.

OBJECTIVE: To characterize the pharmacokinetics of a single dose of 2.5 mg fondaparinux sodium in Chinese patients after thoracic surgery. METHODS: Thirteen patients were enrolled in the study and were given a single dose of 2.5 mg fondaparinux sodium via a subcutaneous injection. Plasma concentrations of fondaparinux sodium were measured throughout a 24 h period. The pharmacokinetic analysis was performed using WinNonlin software. RESULTS: The following pharmacokinetic parameters were derived; t1/2(7.92 ± 3.13) (4.21-15.89) h, tmax(2.52 ± 0.93) (1.38-4) h, p-1 (0.73 ± 0.18) (0.45-1.02) mg · L-1, AUClast(6. 56 ± 2.19) (3.07-9. 75)mg · h · L-1, Vz/F(3.54 ± 1.00) (2.24-5.73) L, CL/F(0.34 ± 0.14) (0.16-0.63) L · h-1, and MRTlast (6.98 ± 2.1) h. The pearson correlation coefficient, r was 0.7283(P = 0.005) between the serum creatinine(Scr) and mean residence time(MRTlast) of fondaparinux. CONCLUSION: The disposition of fondaparinux is highly variable in patients. A statistical significant correlation between Scr and MRTlast of fondaparinux was observed. Fondaparinux sodium administered by intravenous injection is well tolerated in patients.

MicroRNA is a type of endogenous noncoding small molecular RNA with a length of 19-25 nucleotides. MicroRNAs are involved in almost all key biological processes, such as cell proliferation, differentiation, apoptosis, and hematopoiesis, via repres-sion of target gene expression. Acute lymphoblastic leukemia (ALL) is the most common type of pediatric cancer. It is a heterogeneous disease with different clinical signs, morphology, immunophenotype, and cytogenetics. Currently, several microRNAs have implicated aberrant expression in ALL and play an important role in cancer initiation and development. MicroRNA expression pattern is associated with clinical feature, prognosis, and treatment. Therefore, microRNAs could act as a novel marker to help scientists learn about the pathogenesis of ALL and to provide more effective treatment options.

The microarray technology used in biological and medical research provides a new idea for the diagnosis and treatment of cancer. To find different types of cancer and to classify the cancer samples accurately, we propose a new cluster ensemble framework Dual Neural Gas Cluster Ensemble (DNGCE), which is based on neural gas algorithm, to discover the underlying structure of noisy cancer gene expression profiles. This framework DNGCE applies the neural gas algorithm to perform clustering not only on the sample dimension, but also on the attribute dimension. It also adopts the normalized cut algorithm to partition off the consensus matrix constructed from multiple clustering solutions. We obtained the final accurate results. Experiments on cancer gene expression profiles illustrated that the proposed approach could achieve good performance, as it outperforms the single clustering algorithms and most of the existing approaches in the process of clustering gene expression profiles.
Algorithms ; Cluster Analysis ; Gene Expression Profiling ; methods ; Humans ; Neoplasms ; genetics ; Transcriptome

Liposome-mediated nucleic acid delivery has been a focus recently, but in the course of delivering nucleic acid, some hurdles seriously limit the nucleic acid exerting treatment effect. This review refers to a series of problems such as low blood stability, reticuloendothelial system absorption, the lower targeting of liposome and the restriction of endosomal escape which are suffered in liposome-mediated nucleic acid delivery; and gives a detail introduction of strategies such as PEGylation, ligand modification, photochemical internalization, the application of degradation liposome and membrane-lytic peptide, to overcome those problems.

Caloric restriction(CR)remains the most robust one in all possible aging interventions,while the utility of it in humans would be difficult.CR mimeties(CRM)could mimic CR effects without changing calorie intake and have a promising prospect of application.CRM include glyeolysis inhibiter,insulin-like growth factorI,insulin sensitizer,sirtuins,PPAR agonists,and lipid-regulating drugs.

Objective To study the influence of BiPAP on lipid level in patients with chronic heart failure of coronary heart disease.Methods 20 patients with chronic heart failure of coronary heart disease were taken BiPAP:Blood samples were taken from forearm vein before and 4 weeks and 12 weeks after treatment,the lipid level was measured and compared.Results The observation group of The coronary heart disease with chronic heart failure in pre-treatment serum level of total cholesterol(TC)(7.47±0.12)mmol/L,triglycerides(TG)(3.52±0.13)mmol/L,low-density lipoprotein cholesterol(LDLc)(3.73 ±0.11)nmmol/L,apolipoprotein-B(Apo-B)(1.37±0.02)g/Lwere significantly lower than 14 weeks after treatment TC(4.5±0.03)mmol/L,TG(2.6±0.02)mmol/L,LDLc(2.8±0.06)mmol/L,Apo-B(1.02±0.02)g/L)(t=2.154,t=2.278,t=2.311,t=2.347,P all<0.05) in coronary heart disease with chronic heart failure;The observation group after treatment 14 weeks of HDL-CH(1.45±0.02)mmol/Land Apo-A(1.21±0.03)g/L lower than before treatment HDLc(1.05±0.01)mmol/L,Apo-A(0.87±0.01)g/L(t=2.234,t=2.318,P all<0.05) in coronary heart disease with chronic heart failure.Conclusion BiPAP therapy could effectively to ameliorate lipid metabolism in patients with chronic heart failure of coronary heartdisease in the long term.

Breast cancer is a type of heterogenetic neoplasm.Metabolic dysfunction plays a pivotal role in the pathogenesis and progress of breast cancer.N-3 polyunsaturated fatty acid (PUFA) could change fatty acid metabolism of breast cancer cells and modulate expression of oncogenes and anti-oncogenes through various ways.It may provide therapeutic opportunities in the treatment of chemotherapy,radiotherapy,endocrine therapy and molecule targeted therapy of breast cancer.

Atherosclerosis obliterans of lower extremity artery mainly involve the aorto-lliac artery,femoral-popliteal artery and below-knee arteries.At present the major treatment of the disease is endovascular treatment.Due to anatomical differences between the three arteries,the principles and effect of endovascular treatment are different.The endovascular treatment of iliac- femoral lesions,because of its patency rate not lower than surgery,has become the preferred way.On account of the high incidence of femoral- popliteal lesions and the dissatisfaction for patency rate,the endovascular treatment of femoral-popliteal lesions has become a hot research.Endovascular therapy in the below-knee arteries is still in the exploration,currently a small balloon-based.

ObjectiveTo investigate the clinical features,early diagnosis and therapeutic methods of primary tumor of the duodenum.MethodsThe clinical data of 130 patients of primary tumor of the duodenum who were hospitalized in Peaking University Third Hospital from 1974 to 2010 were summarized.There were 30 cases of benign tumors and 100 cases of malignancy. ResultsMore than 90％ of primary tumors of the duodenum were located at the duodenal bulb and descendent part.59％ of malignant tumors were located in the area of duodenal papilla. The mean diameter of benign tumors was less than 2 cm compared with more than 3 cm in malignancies. Upper abdominal pain,jaundice,black stool,intestinal obstruction and abdominal mass were among the most common clinical manifestations. Jaudice was most common in papilla tumors,and intestinal obstruction and palpable abdominal mass often indicate advanced stage.Duodenofiberscopy combined with air barium double contrast radiography increase the diagnosis rate.Among the 30 benign cases,11 cases underwent simple tumor resection,14 cases received endoscopic tumor resection and 3 cases underwent pancreaticoduodenectomy.Resection rate and the 5-year survival rate was 100％. Of the 100 malignant cases,56 cases underwent standard pancreaticoduodenectomy,3 cases received pylorus preserving pancreaticoduodenectomy,9 cases underwent simple tumor resection and 12 cases received segmental duodenectomy.Resection rate was 84％.The 5-year survival rate was 46％ in 59 cases receiving Whipple's procedure.ConclusionsPrimary tumor of the duodenum lacks specific clinical features. Simple tumor resection and segmental duodenectomy can be done for benign cases, while pancreaticoduodenectomy is the therapy of choice for malignant cases.