Objective: To evaluate the feasibility of hypofractionated intensity-modulated radiation therapy (IMRT) combined with concurrent chemotherapy in patients with locally advanced squamous cell carcinoma of the hypopharynx. Methods:Patients with stageⅢ-ⅣA carcinoma of the hypopharynx were treated with IMRT and cisplatin-based concurrent chemotherapy. Two groups were di-vided according to the prescription dose to the primary gross tumor volume, as follows:Cohort-1 comprised patients who were recruit-ed before February 2013 (70 Gy/33 F and 2.12 Gy/F);and Cohort-2 comprised patients who were recruited since February 2013 (69 Gy/30 F and 2.30 Gy/F). Acute toxicities were evaluated. This study was registered with the number ChiCTR-ONRC-14004240. Results:Between August 2008 and December 2014, a total of 76 patients (35 in Cohort-1 and 41 in Cohort-2) were recruited. No xerostomia of grade 3 and higher was observed in all patients, who showed low incidences of grade 3 skin reaction, oral mucositis, and dysphagia. All patients did not show acute toxicities of higher than grade 4. No statistical differences in acute toxicities were observed between the two cohorts. No statistical difference was observed in acute toxicities between the IMRT techniques. Induction chemotherapy was the inde-pendent prognostic factor for grade 2 xerostomia (P=0.002). Conclusion:The 69 Gy/30 F hypofractionated IMRT was safe and effec-tive in the treatment of locally advanced squamous cell carcinoma of the hypopharynx. Late toxicities and long-term outcome need to be investigated further.

Objective To evaluate the effects of low dose Ethyl Carbamate (EC)on the immune function of ICR mice and to provide evidences for developing food safety standard.Methods The ICR mice were divided into four groups,and three groups were treated with 0.1 7,0.83,1 .67 mg/kg·bw EC respectively and the control group was treated with distilled water only.The immune function of ICR mice was determined by five aspects,including cellular immunity,humoral immunity,mononuclear macrophages's phagocytosis,natural killer cell activity and the organ coefficients of immune organs. Results Compared with the control group,the 1 .67 mg/kg·bw EC significantly inhibited the proliferation of spleen lymphocyte,natural killer cell activity and the hemolysis plaque -forming ability induced by ConA (P <0.05 ). Conclusion EC can cause the inhibition of normal mouse's immune function.

Objective Toevaluatetheeffectsofwholecranberrypowder(Pacranpowder)onimmunefunctionsofICR miceinvivo.Methods FemaleICRmice(18-22g)wererandomlydividedintocontrolgroupandlow,mediumandhigh dose groups of whole cranberry powder (83,1 66,and 332 mg/kgbw).Whole cranberry powder was treated with by gavage for 30 days continuously.Control mice were treated with distilled water only.Their immune functions were analyzed, including serum hemolysin analysis, antibody -producing cells (APCs ), conA -induced splenic lymphocyte transformation,SRBC-induced delayed type hypersensitivity,natural killer cell activity assay,peritoneal macrophages phagocytosed chicken red blood cells (CRBC),carbon clearance test and thymus or spleen /body weight ratio.Results Ascomparedwiththecontrols,wholecranberrypowdertreatmentincreasedthenumberofplagueformingcells(PFCs)at 83 mg/kgbw group(P<0.05 ).There were no statistical difference in the total production of antibodies,the activity of conA-induced splenic lymphocyte transformation,the left-hind voix pedis thickness,NK cytoactivity,the phagocytosis index and ratio of peritoneal macrophages, the carbon clearance ability between the groups treated with different concentrationsofwholecranberrypowderandthecontrolgroup(P>0.05).Conclusion Wholecranberrypowdercan enhance mouse the number of plague forming cells (PFCs).

Objective To explore the mutagenic effect of sodium pentachlorophenate (NaPCP) on zebrafish p53 gene coding sequence(CDS) in somatic cell.Methods The experiment was carried out using tuebingen strain of zebrafish, according to the results of acute toxicity test to determine the exposure levels in zebrafish.Zebrafish were randomly divided into blank control group and exposed groups, each containing 10 zebrafish.After exposing for 45d of NaPCP, the RNA was extracted from liver of zebra fish, and the p53 gene including a complete coding sequence of was obtained by RT-PCR.Results LC50 of NaPCP was 18.4 μg/L.Sequence analysis showed that the p53 gene CDS length of 1125bp, encoding 374 amino acids.The percent identity between the published zebrafish sequence of p53 (GI:425876786)and ours was 99.2%,with the other biological sequence of p53 existing some differences.After 45d exposure, zebrafish p53 gene of NaPCP exposure group had mutated at the concentration of 1.8 μg /L.The base substitution of GAG→AAG at codon 8,CAT→CAG at codon 148 and CAG→CAA at codon 229 were detected by PCR-directed sequencing.This may result in the Glu→Lys and His→Gln of expressed p53 protein.Conclusion NaPCP is a kind of gene mutation, which can induce the mutation of p53 gene in zebrafish somatic cells, that has the potential mutagenic risk for humans.

Objective To learn the changes of blood lead levels and serum biochemical parameters of the school agechildren from different areas. Methods All research objects, the school age children, were from three different areasrespectively, including a mountainous area (L area), an island area (H area) where there is not history of Pb pollution,and an industry area (N area) in relation to Pb pollution. The morning urine and peripheral venous blood samples werecollected from the school age children. Pb in blood (PbB), δ-aminoaevulinic acid in urine (ALA), Ca2+, BUN, Cr inserum, and Thyroid Stimulating Hormone (TSH), thyroxin (T4), free thyroxin (FT4) levels were detected. ResultsPbB levels [M was 36.0 ppb] of the school age children from N area were significantly higher than that of L area [22.0 ppb] andH area [23.8 ppb]. On the contrary, serum Ca2+ levels of the school age children from N area were significantly lower than thatof L area and H area. Serum T4 of N area was significantly lower than that of L area and H area. Serum FT4 of H area wassignificantly higher than that of L area and N area. And TSH of N area and H area were both obviously lower than that of L area.But all of these thyroxin indexes were in the range of normal values. Conclusion It should be widely concerned that thesignificant elevation of PbB levels may have a negative impact on school age children in the future.

Objective To investigate effects of xylo-oligosaccharides with chitooligosaccharides on alcohol-induced liver injury and immune function in mice. Methods Different doses of chitosan oligosaccharide (0.045 g/kg-0.26 g/kgB.W) and xylo-oligosaccaride (0.055 g/kg-0.32 g/kgB.W) were feed to the mice for 30 days. The mice live-injury model was induced by alcohol. MDA、 GSH、 TG level in liver and T lymphocyte proliferation of spleen cells induced by conA, the antibody-producing cells, and natural killer (NK) activity were detected. Results Compared with the live-injury model group, MDA level of low/middle dose group, TG level of middle dose group and pathological evaluation score of liver steatosis of high dose group in mice liver were decreased because of chitosan oligosaccharide and xylo-oligosaccaride feeding. Compared with the control group, the ability of T lymphocyte proliferation of mouse spleen induced by ConA and the antibody-producing cells were increased in mice of middle and high dose group. The differences had statistical significances (P<0.05) . Conclusion Under this experimental condition, xylo-oligosaccharides in combination with chitooligosaccharides could protect the mice from alcohol-induced liver injury and enhance immune function in spleen of normal mice synergistically.

DNA, Viral ; blood ; Hepatitis B virus ; genetics ; Hepatitis B, Chronic ; virology ; Humans ; Nucleic Acid Conformation ; RNA, Viral ; genetics ; Viral Envelope Proteins ; genetics

There are few reports on the study of extraperitoneal robotic single-port laparoscopic radical prostatectomy in China. In this study, patients with localized prostate cancer were treated with extraperitoneal robotic single-port laparoscopic radical prostatectomy extraperitoneal robot-assisted single-port laparoscopic radical prostatectomy(EpRA-spRP)from April 2019 to June 2019.All patients performed EpRA-spRP successfully without adding additional auxiliary port. The operation time and blood loss were controllable, and hospitalization time was short. It is safe and feasible to perform EpRA-spRP for medium and low-risk prostate cancer. The short-term tumor control and functional recovery are satisfactory.However, the long-term effect needs further follow-up and observation.

Objective To explore the potential mechanisms of carcinogenesis for human eukaryotic translation elongation factor 1 alpha 2(EEF1A2).Methods Specific inhibition of EEF1A2 with siRNA was achieved in human pancreatic cancer cell line,BxPC-3,which usually expresses high level of EEF1A2.The changes of EEF1A2 expression were determined by Western blot.The effect of siRNA in suppressing the proliferation of BxPC-3 cells was determined by MTT assay,and its role in inducing BxPC-3 cell apoptosis evaluated by flow cytometry,TUNEL and transmission electron micro- scope.Results The sequence-specific siRNA effectively suppressed the expression of both EEF1A2 mRNA and protein.Specific inhibition of EEF1A2 with siRNA in pancreatic cancer cell line BxPC-3 could suppress proliferation and induce apoptosis.Conclusion The oncogenicity of EEF1A2 may be related to its role in suppressing the apoptosis and promoting the growth of pancreatic cancer cells.

OBJECTIVETo investigate the renal protective activity of Hsian-tsao Mesona procumbens Hemsl. water extracts in diabetic rats.

METHODSThirty Sprague-dawley female rats were randomly divided into three groups (n = 10 each), "control group" with intraperitoneal saline injection, "diabetic group" with 60 mg of intraperitoneal streptozotocin injection per kg of body weight and "Hsian-tsao group" with intragastric administration of Hsian-tsao extraction everyday for 4 weeks after intraperitoneal streptozotocin injection. The body weight and blood sugar were measured before and after model induction in the three groups. Thrombospondin-1 (TSP-1) expressions in the kidney were monitored by immunohistochemistry. Kidney ultrastructural changes were also analyzed by using transmission electron microscopy.

RESULTSBefore diabetic model induction, there were no significant differences among the three groups in body weight and blood sugar. Four weeks after the induction of diabetes, the differences became statistically significant. Electron microscopy also revealed disruption of the foot processes of the podocytes and other damages in diabetic group. These damages were significantly less severe in Hsian-tsao group when compared with the diabetic group. TSP-1 expressions in the kidney were significantly increased in both the diabetic group and Hsian-tsao group, but it was relatively lower in Hsian-tsao group than in diabetic group.

CONCLUSIONOur results showed that Hsian-tsao treatment in the diabetic rats effectively prevented the pathological alterations in the kidney and decreased the TSP-1 expression. It was suggested that Hsian-tsao had protective effect on the kidneys of the diabetic rats.

Animals ; Diabetes Mellitus, Experimental ; drug therapy ; metabolism ; pathology ; Diabetic Nephropathies ; metabolism ; pathology ; prevention & control ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Kidney ; drug effects ; metabolism ; pathology ; ultrastructure ; Lamiaceae ; chemistry ; Rats ; Rats, Sprague-Dawley ; Thrombospondin 1 ; metabolism