Chemotherapy is the main treatment approach for advanced colorectal cancer. The 5-fluorouracil (5-FU), oxaliplatin and irinotecan are three major chemotherapeutic drugs. The combined chemotherapy and stop and go treatment mode increase the efficacy and patients' tolerance. The new drugs, raltitrexed, S-1 and TAS-102, have been approved for use in cancer treatment. This article reviews the new development in chemotherapy for the treatment of advanced colorectal cancer.

The stem cell is a class of primitive cells with self?renewal,and multiple pluripotent potential capacities,which can differentiate into multiple specialized cells and generate human organs and tissues. Stem cell therapy is an interventional treatment that introduces new stem cells to damaged tissues,which facilitates the regeneration of trauma,disease and ageing?in?duced damaged human tissues to repair or replace the damaged tissues,thereby achieving the goal of disease treatment. It has been proved that the stem cell therapy is effective in the treatment of multiple human diseases,including cancer,diabetes,neu?rological disorders,autoimmune diseases,cardiovascular disorders and blood diseases. This review summarizes the advances in the research of stem cell therapy for human parasitic infections.

BACKGROUND: Hypoxia-inducible factor 1α may mediate mammalian cells to adapt hypoxia environment.OBJECTIVE: To observe high altitude hypoxia on the ultrastructure of the lung tissue of hypoxia-inducible factor 1α expression.METHODS: Sprague-Dawley rats underwent high altitude hypoxia intervention for 1, 2, 3 and 30 days. Control group was set. Four high altitude hypoxia groups consisted of Golmud, Qinghai at the altitude of 2 700 m from 5-m above sea level of Xi'an consuming 1 day, Tanggula region at 5 000 m above sea level consuming 2 days, and Tibet Nagqu at 4 500 m above sea level consuming 3 and 30 days, respectively.RESULTS AND CONCLUSION: Light and electron microscopy showed that acute high altitude hypoxia 2 day group presented apparent high altitude pulmonary edema, while the 30 day group of acute high altitude hypoxia of high altitude pulmonary edema was significantly reduced, but hypoxia-inducible factor 1α mRNA expression was significantly increased (P < 0.01). Results demonstrate that hypoxia-inducible factor 1α mRNA expression increase in lung tissues after hypoxic acclimatization can help ameliorate high altitude pulmonary edema.

Objective To evaluate the value of three-dimensional(3D) ultrasonic examination in diagnosis of choroidal melanoma. Methods Twenty eyes(20 cases) proved as choroidal melanoma pathologically were reviewed retrospectively with their 3D ultrasonic examinations(OTI, Canada) preoperatively. Rotating-cut method in static stage was used to observe and measure the tumor. Results In 3D ultrasonic examination, 18 cases were diagnosed as choroidal melanoma according to tumor shape, choroidal depression, retinal detachment, CTH color change and cavernous phenomena of choroidal melanoma. The consistent rate of 3D ultrasonic examination and pathology was 90%. Conclusions 3D ultrasonic examination was valuable for diagnosis of choroidal melanoma, especially in observing and measuring the tumor.

Tumor recurrence and metastasis are the major cause for cancer patient death. Aberrant glycosylation is one of the important mechanisms of malignant tumor metastasis. The glycoprotein CD24, which could be a ligand for P-selectin on the surface of activated endothelial cells and platelets, appears to be a new diagnostic marker of tumors and possibly participates in tumor metastasis with unknown pathway. ?1,3 Fucosyltransferase Ⅶ (FucT-Ⅶ) is one of the fucosyltransferases which catalyze the transfer of a fucosyl residue from GDP-?-L-fucose to a sugar acceptor, usually galactose in the sugar chains of glycoproteins or glycolipids. The elevated expression of sialyl Lewis (SLeX), the only carbohydrate product of ?1,3 FucT-Ⅶ , predicts an ominous prognosis and high risk of recurrence and regulates the function of CD24. It is possible that ?1,3 FucT-Ⅶ may enhance the glycosylation of CD24 and thus promote the tumor metastasis.

AIM: To investigate the relationship between adiponectin gene SNP+45 polymorphism and coronary heart disease(CHD) in south China Han population.METHODS: The nondiabetic CHD patients diagnosed by the coronary angiography were selected as CHD subjects(153 cases),and 73 healthy adults served as normal control subjects.The polymerase chain reaction-restriction fragment length polymorphism(PCR-RFLP) was performed to identify the distribution pattern of adiponectin gene SNP+45 in all subjects.The levels of plasma adiponectin were measured by ELISA.RESULTS: The frequency of T/G + G/G genotype and G allele in CHD patients were significantly higher than those in control subjects(P

MicroRNAs (miRNAs) are a class of non coding small RNAs. MiRNAs can regulate cell signal transduction and gene expression, affect cell proliferation, apoptosis and other cell physiological processes, and play a crucial role in maintaining normal biological metabolism and homeostasis of the intracellular environment. In addition, miRNAs are widely involved in the occurrence and progress of cancer. Studies have shown that miRNA27a, a member of the miRNAs family, can play the role of oncogene or tumor suppressor gene in different cancer disease models. This article will review the expression, mechanism and potential clinical application of miRNA27a in different malignant tumors.

Objective To investigate the levels of serum retinol-binding protein 4 (RBP4) and high sensitive C reactive protein (hs-CRP) in type 2 diabetic mellitus (T2DM) patients with macrovascular complications. Methods All of 115 subjects were divided into 3 groups: normal control group (35subjects), T2DM patients with macrovascular complications group (40 subjects) and simple T2DM patients group (40 subjects). Serum RBP4 and hs-CRP was detected and fasting blood glucose(FBG), glycosylated hemoglobin A1c (HbA1c), triacylglycerol (TG), total cholesterol (TC), high density lipopretein cholesferel (HDL-C), low density lipoprotein cholesferol(LDL-C) and fasting insulin(FINS) were measured. Body mass index (BMI) and HOMA-IR was calculated. The correlation of RBP4 and other factors were analyzed.Results The concentrations of RBP4 and hs-CRP were significantly increased in T2DM patients with macrovascular complications group and simple T2DM patients group compared with those in normal control group [hs-CRP:(9.12±4.21),(2.01±1.96), (0.98±0.36)mg/L; RBP4:(30.70 ± 5.45), (20.02±5.32),(12.02±3.45)mg/L] (P<0.01). Also,the concentrations of RBP4 and hs-CRP were significantly increased in T2DM patients with macrovascular complications group compared with those in simple T2DM patients group (P<0.01). Univariate analysis showed that serum RBP4 was positively associated with LDL-C,BMI,FBG,hs-CRP,FINS,HOMA-IR (r=0.325, 0.597, 0.323, 0.571, 0.275, 0.463,P<0.05 or <0.01).Conclusions The concentrations of RBP4 and hs-CRP are significantly higher in T2DM patients. The changes of RBP4 and hs-CRP are closely related to the occurrence and development of diabetic macrovascular complications.

Objective To investigate the levels of serum retinol-binding protein 4 (RBP4 )and related factors in type 2 diabetic patients. Methods Eighty type 2 diabetic and patients 30 non-diabetic subjects were recruited into obese-diabetic group [body mass index (BMI) 1525 kg/m~2],normal-weighted diabetic group(BMI < 25 kg/m~2)and control group(BMI < 25 kg/m~2). Serum adiponectin(APN), RBP4 and hemoglobin A_1c (HbA_1c)triacylglycerol (TG),total cholesterol (TC).high density lipoprotein cholesterol (HDL-C),low density lipoprotein cholesterol (LDL-C)and were measured on fasting samples. BMI, waist/hips girth ratio (WHR) and insulin resistance index (HOMA-IR) were calculated. The correlation between RBP4 and other factors was analyzed. Results The concentration of RBP4 was significantly increased in obese-diabetic group and normal-weighted diabetic group compared with that in control group [ (30.02 ± 5.32), (20.10 ± 5.45), (12.02 ± 3.45) mg/L] (P < 0.01). The concentration of RBP4 was higher in obese-diabetic group than that in normalweighted diabetic group (P < 0.01). Univariate analysis showed serum RBP4 was positively associated with TG,BMI,FBG, WHR,FINS,HOMA-IR and negatively associated with APN (r = 0.225, 0.697, 0.323,0.557, 0.272, 0.461, -0.398). Conclusions The concentration of RBP4 is significantly higher in type 2 diabetic patients compared with that in normal subjects. RBP4 possibly plays an important role in the insulin resistance and the occurrence and development of type 2 diabetes.