AIM: To investigate the influence of dialysate on the cell morphology and the peritoneal membrane function in chronic peritoneal dialysis rats. METHODS: 40 SD rats were divided randomly into 4 groups. Except control group, other groups daily received infusion of 20 mL dialysate (4.25% dialysate(HG), 1.50% dialysate(LG), Riger's solution(RG)) respectively for 8 weeks. The peritoneal membrane function was investigated by peritoneal transport test, and the rat peritoneal mesothelial cells(PMCs)morphology was analyzed by the cell imprints. RESULTS: The intraperitoneal volume and net ultrafiltration in HG and LG groups were significantly lower, with D/P_(urea) significantly higher, and C_(urea) after 4 h of dialysis significantly lower than that in RG and control groups. The density of cell population from analysis of cell imprints in HG and LG groups was significantly lower, but the mean surface area were significantly larger than that in RG and control groups. These change had no difference between HG and LG group. Using the high glucose dialysate for 8 weeks significantly decreased the ultrafiltration volume ,which was significantly relate to the increasing of cell surface area (r=-0.896,P

Objective Analyze the amino acids and acylcarnitines in the blood of patients first diagnosed with uremia using tandem mass spectrometry in order to provide a basis for clinical diagnosis and treatment. Methods 30 patients with uremia were selected as the research objects,while 15 cases of healthy person were served as the control. The values of 11 kinds of amino acids and 2 kinds of acylcarnitines in the two groups were detected using tandem mass spectrometry,and the data were analyzed and compared. Results The levels of alanine(Ala)and tyrosine(Tyr)in uremia group were significantly lower than those in control group(P < 0.05),while the levels of citrulline(Cit),glycine(Gly)and proline(Pro)were significantly higher in uremia group than in control group (P < 0.05). The differences were mainly in non-essential amino acids between the two groups. The levels of free carnitines and total carnitines in uremia group were significantly higher than those in normal group(P < 0.05). Conclusion For the patients first diagnosed with uremia(not treated with replacement therapy),the disturbance of amino acid metabolism mainly in non-essential amino acids were found in their blood,and the carnitine levels were higher than normal levels. The results could provide the basis for clinical nutrition therapy for patients with uremia.

ated acute peritonitis induced by LPS in rats.

Objective To explore the effects of peroxisome proliferator-activated receptorγ (PPARγ) agonist rosiglitazone and 15-deoxy-delta-12,14-prostaglandin J2 (15d-PGJ2) on the expression of PPARγ, toll-like receptor 4 (TLR4) and the activation of STAT1 as well as the local inflammation reaction of abdominal cavity in sprague dawley (SD) rats with peritoneal dialysis- related acute peritonitis induced by lipopolysaccharide (LPS). Methods Twenty-four male SD rats were equally randomized to four groups(n=6 each): control group, injected with 4.25% dextrose peritoneal dialysate (PDF) via abdominal cavity(90 ml/kg); LPS group, injected with LPS(1 mg/kg) via abdominal cavity 4 hours later follewed by PDF injection; rosiglitazone plus LPS group (Rosi group), preconditioned with rosiglitazone (20 mg·kg-1·d-1) by intragastric way for 3 days, then injected with LPS and PDF via abdominal cavity; 15d-PGJ2 plus LPS group (15d-PGJ2 group), preconditioned with 15d-PGJ2 (0.3 mg·kg-1·d-1)via abdominal cavity injection for 3 days, then injected with LPS and PDF via abdominal cavity. The rats were killed 4 hours after PDF injection, IL-6 level in abdominal dropsy was determined by ELISA. Peritoneum tissue was stained by Masson. Leucocyte count in abdominal dropsy was performed. The mRNA expression of PPARγ and TLR4 in peritoneum tissue was determined by RT-PCR; the protein expression of PPARγ, TLR4, p-STAT1 and STAT1 in peritoneum tissue was analyzed by Western blot. Results IL-6 level of abdominal dropsy in LPS group [median 268.53 (range 201.87-335.19) ng/L] was significantly higher than that of control group [median 147.62 (range 130.60-164.64) ng/L] (P<0.01). The IL-6 level of abdominal dropsy in Rosi group [median 110.20 (range 77.60-142.80) ng/L] was significantly lower than that of LPS group (P<0.05). Compared to that of control group, the edematous degree of peritoneum in LPS group was significantly severer, meanwhile, mRNA and proteins expression of PPARγ and TLR4 in rat peritoneum were also significantly higher (P<0.05, P<0.01). Compared to that of LPS group, the edematous degree of peritoneum in Rosi group was lighter, the expression of PPARγ and TLR4 mRNA was significantly up-regulated (P<0.05), meanwhile their proteins expression was down-regulated (P<0.05); and in 15d-PGJ2 group, the edematous degree of peritoneum, the expression of PPARγ mRNA and protein was also decreased (P<0.05), but TLR4 mRNA expression was up-regulated (P<0.01), however, its protein expression was down-regulated (P<0.05). There were no significant differences in leucocyte count of abdominal dropsy among the four groups. The p-STAT1 expression in the rats peritoneum induced by LPS was markedly increased by both rosiglitazone and 15d-PGJ2 (P<0.01). Conclusions Both rosiglitazone and 15d-PGJ2 can down-regnlate the inflammatory reaction in rat peritonitis induced by LIPS, which may be involved in modulating the expression of associated functional protein during LPS signal pathway.

Objective To investigate the clilic effects of the compound danshen diwan in menopause women with ST changes and angina.Methods56 menopause women with ST changes and angina were randomly divided into two groups,a controlled group(n=28)with base medicine treatment and a observed group(n=28)with the compound danshen diwan.The change of vasodilation endothelium functon and symptom relief were oberved before and after treatment in all patients.ResultsVasodilation endothelium functon were improved markedly in the observed group while the controlled group had no significantly changes;Meanwhile,the clinic relief rates of the observed group was markedly superor to that of controlled group.ConclusionThe compound danshen diwan would have a positive effect in menopause women with ST changes and angina.

Objective To investigate the role of rat organic anion transporter 1 (OAT1, SLC22A6) in the renal cellular uptake of AA Ⅰ and its impact on cellular toxicity. Methods HEK-293 cells were transfeeted with rat OAT1 cDNA or empty vectors. The over-expression of rOAT1 was confirmed by Western blot analysis and its activity was validated by using para-aminohippurate (PAH) as a probe. Cellular apoptosis was examined by flow cytometery using propodium iodode (PI) and annexin V-FITC staining. Results Concentration-and time-dependent intracellular accumulation of AA Ⅰ was observed in rOATl-transfected HEK-293 cells. After treatment with AA Ⅰ at the concentrations of 40 mg/L, 80 mg/L, 120 mg/L and 160 mg/L,respectively, for 45 min, the intracellular concentrations of AA Ⅰ in rOAT1-transfected HEK-293 cells were higher than those in controls (P<0.05). After treatment with AA Ⅰ (120 mg/L for 30 min, 60 min, 90 min and 120 min, respectively, the intracellular concentrations of AA Ⅰ in rOAT1-transfected HEK-293 cells were higher than those in controls (P<0.05). PAH significantly reduced the intracellular accumulations of AA Ⅰ in rOAT1-transfected HEK-293 cells. After treatment with AA Ⅰ at the concentrations of 40 mg/L, 80 mg/L, 120 mg/L and 160 mg/L respectively for 35 min, the intracellular accumulations of AA Ⅰ in rOAT1-transfected HEK-293 cells that treated with PAH were lower than those that were not treated by PAH. Cellular apoptosis and caspase-3 expression in rOAT1-transfeeted HEK-293 cells were significantly up-regnlated as compared to controls (P<0.05). Conclusion rOAT1 is involved in the cellular uptake of AA Ⅰ which leads to increased epithelial apoptosis. Further studies are suggested to investigate the role of human OAT in the disposition of AA and its toxicological consequences.

Objective To investigate the effects of CD4+CD25high regulatory T cells(Treg)and the imbalance of helper T lymphocyte subsets(Th1/Th2)on the immunological mechanism of IgA nephropathy(IgAN)patients. Methods The percentage of Treg and helper T cells subpopulation (Th1/Th2)in the peripheral blood of IgAN patients and healthy controls was examined by flow cytometry.The FOXP3 expression was detected through intracellular staining.The correlation of Treg or Th1/Th2 with clinical parameters of IgAN was analyzed by Spearman or Pearson rank correlation test. Results The percentages of Treg and Th2 cells were significantly higher in peripheral blood of IgAN patients compared to that of healthy controls[Treg (2.14±0.82)%vs[1.59±0.53)%,Th2(2.57±0.72)%vs(1.81±1.10)%,all P＜0.05].Th1/Th2 ratio was significantly reduced in IgAN patients(5.75±1.89 vs 12.73±9.79,P＜0.05).The percentage of circulating Treg cells was positively correlated with serunl IgA concentration(r=0.397,P＜0.05),and was negatively correlated with eGFR(r=-0.376,P＜0.05).The percentage of circulating Th2 cells was positively correlated with serum IgA(r=0.468,P＜0.05). Conclusions There is a disorder of T lymphocyte population in the peripheral blood of IgAN patients.The increased Treg and Th2 cells may play an important role in the pathogenesis of IgAN.

Purpose: Osteosarcoma (OS) universally exhibits heterogeneity and cisplatin (CDDP) resistance. Although the Wee1/CDC2 and nuclear factor кB (NF-κB) pathways were reported to show abnormal activation in some tumor cells with CDDP resistance, whether there is any concrete connection is currently unclear. We explored it in human OS cells. Materials and Methods: Multiple OS cell lines were exposed to a Wee1 inhibitor (AZD1775) and CDDP to assess the half-maximal inhibitory concentration values. Western blot, coimmunoprecipitation, confocal immunofluorescence, cell cycle, and Cell Counting Kit-8assays were performed to explore the connection between the Wee1/CDC2 and NF-κB pathways and their subsequent physiological contribution to CDDP resistance. Finally, CDDP-resistant PDX-OS xenograft models were established to confirm that AZD1775 restores the antitumor effects of CDDP. Results: A sensitivity hierarchy of OS cells to CDDP and AZD1775 exists. In the highly CDDP-tolerant cell lines, Wee1 and RelA were physically crosslinked, which resulted in increased abundance of phosphorylated CDC2 (Y15) and RelA (S536) and consequent modulation of cell cycle progression, survival, and proliferation. Wee1 inhibition restored the effects of CDDP on these processes in CDDP-resistant OS cells. In addition, animal experiments with CDDP-resistant PDX-OS cells showed that AZD1775 combined with CDDP not only restored CDDP efficacy but also amplified AZD1775 in inhibiting tumor growth and prolonged the median survival of the mice. Conclusion Simultaneous enrichment of molecules in the Wee1/CDC2 and NF-κB pathways and their consequent coactivation is a new molecular mechanism of CDDP resistance in OS cells. OS with this molecular signature may respond well to Wee1 inhibition as an alternative treatment strategy.

Objective:To observe the clinical effectiveness of manual therapy based on posture decoding for patients with lower crossed syndrome (LCS).Methods:Thirty-six LCS patients were randomly divided into an observation group and a control group, each of 18. The observation group received manual therapy based on posture decoding, while the control group was treated with proprioceptive neuromuscular facilitation (PNF), both in 20min sessions, once a week for 4 weeks. Before the experiment, after one, two and four weeks of treatment and followed-up 4 and 8 weeks later, both groups were evaluated using a visual analogue scale (VAS), the Oswestry Disability Index (ODI) and finger-floor distance (FFD). Anterior pelvic tilt angles (ASIS-PSISs), sacral slopes (SS), lumbar curve index (LCI) and surface EMG flexion-relaxation ratios (FRRs) were also recorded from both groups before and after the treatment.Results:After one and four weeks of the treatment, the average VAS, ODI, and FFD had decreased significantly in both groups, with all significantly lower in the observation group, on average. At the final follow-up, the average VAS and ODI scores of both groups were significantly lower than before the treatment, with those of the observation group significantly lower than the control group′s averages. After 4 weeks of treatment significant differences were observed also in the group′s average ASIS-PSISs, SSs and LCIs compared with before the treatment. And right after the treatment the left and right surface electromyography FRRs of the observation group were significantly higher than those of the control group.Conclusion:Manual therapy based on posture decoding can significantly improve the pelvis forward angle and lumbar motion of LCS patients, relieving back pain and relaxing back muscles.