With the gradual increase in the diagnosis rate of early gastric cancer, clinicians must consider prevention of gastric anatomical structure and physiological function while ensuring the radical treatment of the tumor. Pylorus-preserving gastrectomy is a function- preserving operation that preserves the pylorus, inferior pyloric vessel, and the vagus nerve in patients with early middle gastric cancer. One of the major controversies at present is the thoroughness of limited lymph node dissection for pyloric-preserving gastrectomy. Various studies have reported that the lymph node metastasis rate of early middle gastric cancer was low, especially in the suprapyloric region, inferior pylorus and the upper pancreatic region. Partial lymph node dissection is required for vascular and neurological protection, which is also safe and feasible in studies reported by major centers. Many clinical studies have been carried out in Japan and Korea, and postoperative follow-up has gradually increased evidence, providing the basis for the safety of lymph node dissection. In large case studies comparing pylorus- preserving gastrectomy with traditional distal gastrectomy, the incidence of postoperative morbidity, such as dumping syndrome, bile reflux esophagitis, weight loss, and malnutrition is low. Sentinel lymph node navigation technology is gradually applied to the diagnosis and treatment of early gastric cancer, and its clinical application value still needs further research.
Humans ; Pylorus/pathology* ; Stomach Neoplasms/pathology* ; Gastrectomy ; Gastroenterostomy ; Lymph Node Excision

Humans ; Metabolome ; Metabolomics ; Neoplasms ; diagnosis ; metabolism ; Research

Colorectal cancer( CRC) has become one of the major cancer threatening residents′health all around the world, and considerable resources are needed for its prevention and control.Economics evaluation could provide the basis of decision-making for improving the allocation efficiency of health resources in the field of CRC prevention and control.This paper comprehensively reviewed the papers that have been published in the field of colorectal cancer screening,from the points of view of published time,regional economic evaluation re-search,evaluation method,the research angle,input and output measurement,model,recommend strategy.

BACKGROUND:Calcitonin gene-related peptide has been confirmed to induce osteogenic differentiation, but whether it can induce the osteogenic differentiation of adipose-derived stem cells under three-dimensional culture to construct tissue-engineered bone is rarely reported.
OBJECTIVE:To investigate the feasibility of exogenous calcitonin gene-related peptide to induce osteogenic differentiation of adipose-derived stem cells combined with calcium alginate gel in three-dimensional condition.
METHODS:Adipose-derived stem cells were gained by col agenase I digestion of the subcutaneous adipose tissue of both inguinal regions of New Zealand rabbits. Passage 3 cells were mixed with sodium alginate to prepare calcium alginate gel, and then the cells were assigned into two groups and cultured in 24-wel plates. Adipose-derived stem cells in the control group were cultured in Dulbecco’s modified Eagle’s medium/Ham’s nutrient mixture F-12 supplemented with 10-2 mol/Lβ-glycerophosphate sodium, 10-7 mol/L dexamethasone, 50 mg/L ascorbic acid, 10%fetal bovine serum. While, adipose-derived stem cells in the experimental group were incubated with the same medium as above, but 1.5 μg/L calcitonin gene-related peptide was added. The cells proliferation and the mRNA expressions of col agen I and osteocalcin were detected by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide and reverse transcription-PCR respectively, and alkaline phosphatase and calcium concentration were detected at different induction time.
RESULTS AND CONCLUSION:The cellproliferation curves were S shaped. The absorbance values of the experimental group were higher than those of the control group at1, 3, 5, 7, 14, 21 days after osteogenic induction (P<0.05). Alkaline phosphatase and alizarin red staining of adipose-derived stem cells was al positive, but golden round nodes became more and bigger in the experimental group compared with the control group after 2 weeks. At 7 and 14 days, col agen I and osteocalcin mRNA expressions were higher in the experimental group than in the control group. Alkaline phosphatase activity and calcium concentration of the experimental group were higher than those of the control group at 1, 2, 3, 4 weeks after osteogenic induction (P<0.05). Results showed that the calcitonin gene-related peptide can induce the osteogenic differentiation of adipose-derived stem cells combined with calcium alginate gel.

OBJECTIVESTo develop a new method for amplifying and sequencing the full-length of HBV genome.

METHODSA pair of primers located at the nick region of HBV molecule and a thermostable polymerase with high fidelity and sensitivity were used. After cloning the PCR products into a plasmid, the sequences of HBV genome were analyzed.

RESULTSThe full-length of HBV genome were acquired using this method. The sensitivity and fidelity of the new method were also analyzed. The least quantity of initial templates was 10(2) and the artificial mutation rate was 1.2 bp/kb.

CONCLUSIONThis method can be used in amplification and sequence analysis of the full-length of HBV genome on a large scale.

DNA Primers ; genetics ; Gene Amplification ; Genome, Viral ; Hepatitis B virus ; genetics ; isolation & purification ; Hepatitis B, Chronic ; virology ; Humans ; Point Mutation ; Polymerase Chain Reaction ; Sequence Analysis, DNA ; Virion ; genetics ; immunology ; isolation & purification

Heat shock protein gp96 is a highly conserved and monomorphic glycoprotein in the endoplasmic reticulum. It functions as molecular chaperone and can associate with a variety of antigenic peptides noncovalently in vivo and in vitro. Recent studies have indicated that gp96 molecules participate in major histocompatibility complex class I-restricted antigen presentation pathway. Immunization of mice with gp96 preparations isolated from cancer cells can elicit a cancer-specific protective T cell immune response that is recallable, which is a prerequisite for gp96 as a therapeutic vaccine against cancers. The immunogenicity of gp96 molecules has been attributed to the antigenic peptides associated with them. These phenomena provide a new pathway for cancer immunotherapy. The mechanism that the gp96-peptide complex induces specific immune response and the explorations for gp96-peptide complex as a therapeutic cancer vaccine are reviewed.
Animals ; Antigens, Neoplasm ; immunology ; therapeutic use ; Cancer Vaccines ; therapeutic use ; Humans ; Immunotherapy ; Membrane Glycoproteins ; immunology ; metabolism ; Molecular Chaperones ; immunology ; Neoplasms ; immunology ; therapy ; Peptides ; immunology ; metabolism

Objective To study influence of tongxinluo on blood endothelial microparticles(EM Ps) and matrix metalloprotei‐nase‐9(MMP‐9) in patients with acute myocardial infarction after percutaneous coronary intervention(PCI) .Methods One hundred and twenty‐eight hospitalized patients with acute myocardial infarction after per‐cutaneous coronary intervention were recruited from January 2012 to December 2014 ,All patients were randomly divided into tongxinluo group (n=65) and control group (con‐ventional treatment ,n=63) .Tongxinluo group was on the basis of conventional treatment group with tongxinluo capsules 2 plus ,3 times a day .We detected the EMPs and MMP‐9 of two groups preoperatively and on the 7th postoperatively day .Results Com‐pared with the conventional treatment group ,blood EMPs and MMP‐9 in tongxinluo group were lower after 7 days treatment ,the difference was statistically significant (P<0 .05) .There was a positive correlation between the EMPs and MMP‐9(P<0 .05) .Con‐clusion For patients with acute myocardial infarction after percu‐taneous coronary intervention ,tongxinluo could further inhibit in‐flammatory reaction ,make the plaque stability and improve the function of endothelial cells on the basis of conventional treatment groups .

Objective:To master the current situation of prevention and control of drinking water-borne endemic fluorosis in Shandong Province, and to provide basic data for control and evaluation of drinking water-borne endemic fluorosis.Methods:From June to December 2019, in accordance with the requirements of the "National Drinking Water-Borne Fluorosis Monitoring Program (2019 Edition)" and "Shandong Province Drinking Water-Borne Fluorosis Monitoring Program (2019 Edition)", cross-sectional survey method was used to monitor the operation of the water supply projects, the fluorine content in drinking water, and the condition of children with dental fluorosis in all the disease affected villages of the drinking water-borne endemic fluorosis counties (cities, districts) in 16 cities of Shandong Province. Water fluorine was detected by "Standard Examination Methods for Drinking Water-Nonmetal Parameters" (GB/T 5750.5-2006), and in accordance with the "Standards for Drinking Water Quality" (GB 5749-2006), the water fluorine content was judged to be qualified or not. The examination and determination of dental fluorosis in children adopted "Diagnosis of Dental Fluorosis" (WS/T 208-2011), and the detection rate of dental fluorosis was calculated, the detection rates of dental fluorosis were compared between water improvement villages and villages without water improvement, qualified water fluorine and unqualified water fluorine villages.Results:There were 9 475 drinking water-borne endemic fluorosis villages in 105 counties (cities, districts) in Shandong Province, of which 9 370 were water improvement villages, and the water improvement rate was 98.89%. Among all the water improvement villages, there were 9 318 projects in normal operation, 45 intermittent projects and 7 scrapped projects. Among all the drinking water-borne endemic fluorosis villages, 8 254 villages were qualified in water fluorine, and the qualified rate of water fluorine was 87.11% (8 254/9 475); among water improvement villages, 8 210 villages were qualified in water fluorine, and the qualified rate of water fluorine was 87.62% (8 210/9 370); among the villages without water improvement, 44 villages were qualified in water fluorine, and the qualified rate of water fluorine was 41.90% (44/105). The qualified rate of water fluorine in water improvement village was significantly higher than that in villages without water improvement (χ 2 = 193.31, P < 0.05). The detection rates of dental fluorosis in children in water improvement villages and villages without water improvement were 8.92% (25 624/287 405) and 12.70% (271/2 134), respectively, and the detection rate of dental fluorosis in children in villages without water improvement was higher than that in water improvement villages (χ 2 = 37.23, P < 0.05). The detection rates of dental fluorosis in children in qualified water fluorine and unqualified water fluorine villages were 7.98% (20 200/253 082) and 15.62% (5 695/36 457), respectively, and the detection rate of dental fluorosis in children in unqualified water fluorine villages was higher than that in qualified water fluorine villages (χ 2 = 2 283.76, P < 0.05). Conclusions:Water improvement and fluorine reduction measures have been implemented in most drinking water-borne endemic fluorosis villages in Shandong Province, the detection rate of dental fluorosis in children in water improvement villages is lower than that in villages without water improvement. However, attention should be paid to the situation of water fluorine exceeding the standard and later management and maintenance to prevent the rebound of the disease.

PRAS40 (proline-rich Akt substrate 40 kD) associates with mammalian target of rapamycin complex 1(mTORC1), serine 183 site (Ser183) of PRAS40 can be phosphorylated by mTORC1. To prepare the phosphorylated PRAS40 (Ser183) antibody, We chosen 10-amino acid including Ser183 as antigen peptide through antigenicity and hydrophobicity analysis, hinged on keyhole limpet hemocyanin (KLH), and used the KLH-peptide to immunize rabbits. After antibody serum titer detection by enzyme linked immunosorbent assay (ELISA), the antibody was purified with rProtein A sepharose fast flow and dephosphorylated antigen membrane. The antibody titrate reached 1:10 000 after purification and its special property was enhanced with absorption treatment of dephosphorylated antigen membrane. In addition, we used rabbit anti-PRAS40 antibody and the phosphorylated PRAS40 (Ser183) antibody to detect PRAS40 expression in several cell lines, including the normal cells HL7702, HEK293, tumor cells HepG2, A549 and S180. There were no quite difference among these cells; otherwise, we observed the decreased phosphorylation level of Ser183 after amino acid withdrawal treatment. Therefore, the polyclonal phosphorylated PRAS40 (Ser183) antibody was specific to PRAS40 (Ser183) site and could be used for the function study of PRAS40.
Adaptor Proteins, Signal Transducing ; Animals ; Antibodies ; analysis ; Cell Line, Tumor ; Humans ; Male ; Mechanistic Target of Rapamycin Complex 1 ; Multiprotein Complexes ; Phosphoproteins ; chemistry ; immunology ; Proteins ; genetics ; metabolism ; Proto-Oncogene Proteins c-akt ; metabolism ; Rabbits ; Serine ; metabolism ; TOR Serine-Threonine Kinases

OBJECTIVE: To investigate the characteristics of heart rate (HR) and heart rhythm in children with obstructive sleep apnea-hypopnea syndrome (OSAHS). METHOD: Ninety-five patients underwent overnight PSG for clinically suspected OSAHS. According to the apnea index (AI), the patients were assigned to control group (AI < or = 1/h, SaO2 >92%, n = 27) or OSAHS group (AI > 1/h, SaO2 < 92%, n = 68). The HR and heart rhythm were monitored and compared between the two groups. RESULT: The maximum HR during sleep was significantly higher in OSAHS group while the minimum HR was significantly lower during sleep. Bradycardia and tachycardia is a common feature of pediatric OSAHS. There was a significantly higher incidence of tachycardia in OSAHS groups than in the control group. CONCLUSION These findings suggest that pediatric OSAHS might influence HR and heart rhythm.
Child ; Child, Preschool ; Electrocardiography ; Female ; Heart Rate ; Humans ; Male ; Polysomnography ; Sleep Apnea, Obstructive ; physiopathology