Objective To explore the possible mechanisms of the protective effect of leflunomide on kidneys by observing the effects of leflunomide on rat kidney tissue of focal segmental glomerulosclerosis (FSGS) expression level of transforming growth factor (TGF)-β1.Methods Twenty-four SD rats were randomly divided into 3 groups:normal control group (n =8),FSGS model group (n =8) and leflunomide treatment group (n =8).Unilateral nephrectomy 1 week after repeated injection of doxorubicin established FSGS model.Since 2 weeks after surgery,the treatment group had been given the leflunomide suspension 5 mg/(kg · d) orally,while normal control group and model group had been given the same amount of solvent orally.In the 8th week of the experiment,the rats were sacrificed and the specimens were collected,so serum creatinine,blood urea nitrogen,total cholesterol,albumin and 24 hours urinary protein were recorded; renal tissue was taken for pathological examination and calculation of glomerular sclerosis index (GSI) was made;immunohistochemical detection of TGF-β1 expression in the kidney was performed;The expression of TGF-β1 was examined by Western blot.Results Compared with normal control group,FSGS model group and leflunomide treatment group rats' 24 hours urinary protein excretion,serum creatinine,blood urea nitrogen,and cholesterol significantly increased while serum albumin significantly reduced severe renal pathological changes and TGF-β1 protein expression was significantly increased,and the differences were statistically significant (all P ＜ 0.05) ; Compared with the FSGS model group,in the 8th weekend of the experiments,the treated rats' 24 hours urinary protein excretion,relevant serum biochemical indicators of renal pathological changes had different degrees of improvement in renal tissue and TGF-β1 protein expression was decreased,so the differences above were statistically significant(all P ＜ 0.05).Conclusions Leflunomide may reduce the FSGS kidney tissue fibrosis by inhibiting the expression of TGF-β1,and thus protect the kidneys.

This paper summarizes the nursing experience of 9 very low birth weight infants with catheter-related infections. Among the 132 very low birth weight infants with PICC,9 cases suffered from catheter-related infections. Three cases showed positive results on the germiculture of catheter tip and blood, two cases showed positive result only on the germiculture of blood, and four cases showed negative results on both germiculture of catheter tip and blood. One infant's parent gave up the treatment and eight cases were cured. It is suggested that closely monitoring the signs of infections and taking effective treatment and nursing care as early as possible were the key points of infection control.

Blood-brain barrier is a natural protection for human body. It protects central nervous system from the interruption and damage of xenobiotics. However, it prevents potential drugs aimed at central nervous system, thus becomes an obstruction for the development of central nervous system drugs. The recent development of blood-brain barrier permeability research and several lead optimization strategies to improve blood-brain barrier permeability are reviewed. These structure optimization methods include increasing lipophilicity, reducing hydrogen bond doners, simplifying molecule, increasing rigidity, lowering polar surface area, avoiding acid group, prodrug strategy, modifying into active transporter's substrates, as well as avoiding P-glycoprotein recognized structures.

Blood-brain barrier is a natural protection for human body. It protects central nervous system from the interruption and damage of xenobiotics. However, it prevents potential drugs aimed at central nervous system, thus becomes an obstruction for the development of central nervous system drugs. The recent development of blood-brain barrier permeability research and several lead optimization strategies to improve blood-brain barrier permeability are reviewed. These structure optimization methods include increasing lipophilicity, reducing hydrogen bond doners, simplifying molecule, increasing rigidity, lowering polar surface area, avoiding acid group, prodrug strategy, modifying into active transporter's substrates, as well as avoiding P-glycoprotein recognized structures.
ATP-Binding Cassette, Sub-Family B, Member 1 ; metabolism ; Biological Transport ; Blood-Brain Barrier ; Central Nervous System ; drug effects ; Central Nervous System Agents ; pharmacokinetics ; Drug Design ; Humans ; Permeability ; Xenobiotics ; adverse effects

AIM:To evaluate the efficacy and safety of methazolamide in treating refractory uveitic macular edema.METHODS: Retrospective self-controlled study was designed.A total of 15 patients (20 eyes) with refractory uveitic macular edema which used methazolamide as adjuvant therapy were enrolled in Shanghai First People`s Hospital from January 2015 to June 2016.The changes of central macular thickness (CMT) and best corrected visual acuity (BCVA) were observed at baseline and 2, 4, 8wk after treatment.We also focused on the incidence of complications and relapse.RESULTS: The CMT was 445.95±154.10μm, 338.83±138.34μm, 251.50±40.20μm, 244.90±35.68μm at baseline, 2, 4 and 8wk after treatment, respectively.The differences among them were statistically significant (F=15.467, P<0.05).The BCVA (log MAR) were 0.40±0.17, 0.28±0.21, 0.19±0.20, 0.18±0.21 at baseline, 2, 4 and 8wk respectively, with a significant difference among them (F=5.208, P<0.05).When the cumulative dose reached to 700mg and 1400mg, no one had methazolamide-related complications;and when it came to 2800mg, 5 patients (33%) had methazolamide-related complication.After the withdrawal of methazolamide 1wk, 1 and 3mo, 3 patients (20%), 5 patients (33%) and 8 patients (53%) relapsed, respectively.CONCLUSION: Methazolamide is beneficial in improving macular edema and vision in 4wk.When the cumulative dose is more than 1400mg, we need pay attention to the complications.After discontinuing methazolamide for 1wk, macular edema relapsed in some patients, and more than half of patients recurred after 3mo.So the patients should be followed closely in 3mo after withdrawal of methazolamide.

This paper summarize the perioperative nursing of 12 newborns with thyroglossal cyst. The preoperative nursing measures focused on prone position,gastric tube feeding,close monitoring of vital signs and tracheal intubation as needed. If the TeSO2 was normal,oxygen therapy was not recommended. After the operation,continuously monitoring vital signs,respiratory care and use of sedatives as needed were carried out. As a result,all of the 12 infants recovered and discharged.

Cysts ; congenital ; Humans ; Infant ; Laryngeal Diseases ; congenital ; Male

Objective To investigate the effect of transforming growth factor-?1 (TGF-?1) on cell cycle,cell proliferation,and invasive capacity of human colon cancer cells of the line SW480,for its role in colon carcinogenesis and development,as well as its application in gene therapy for colon cancer with RNA interference.Methods The recombinant expressing plasmids pEGFP-N1-TGF-?1 was constructed and transfected into SW480 cells by Lipofectamine 2000.The expression of TGF-?1 mRNA and protein in the transfected SW480 cells were detected by fluorescent microscopy,RT-PCR and Western blot analysis respectively.The cell proliferation of SW480 cells was tested by MTT assay,the cell cycle was analyzed by flow cytometry,and the invasion ability of SW480 cells were investigated by Transwell-matrigel invasion chambers.Results After transfected into SW480 cells,both the mRNA and protein levels of TGF-?1 were effectively increased (P

Objective To observe the effects of mizoribine(MZR)on renal tubular epithelial?mesenchymal transition(EMT)of mice which have been performed unilateral ureteral obstruction(UUO),and study the mechanism of its anti?fibrosis of renal interstitial. Methods A total of 24 CD1 mice were randomly divided into sham group,UUO model group and MZR treatment group,with 8 mice in each group. The day before op?eration,mice of MZR treatment group had been given MZR 10 mg/kg/d lavage,those of sham group and UUO model group had been given equal saline lavage. Fourteen days after the operation ,blood was collected and serum creatinine and blood urea nitrogen were measured;the obstruction kidneys were harvested for section,HE staining and Masson staining were employed to observe the changes of kidney pathological;the expression ofα?SMA and E?Cad in kidney with detected by immunohistochemical and Western blot method. Results Compared with sham group,serum creatinine and blood urea nitrogen of mice in UUO model group and MZR treatment group were significantly elevated ,kidney pathological chang?es and the expression ofα?SMA in renal tissue were increased and that of E?Cad was reduced ,the differences were all statistically significant(P<0.05);compared with UUO model group,mice in MZR treatment group had different degree of improvements in serum creatinine,blood urea ni?trogen and kidney pathological changes ,the expression ofα?SMA in renal tissue was inhibited and that of E?Cad was increases ,and the differences were statistically significant(P<0.05). Conclusion MZR may inhibit the development of renal tubular EMT in UUO mice ,thereby reduce the level of renal tubule interstitial fibrosis and improve renal function.

Objective: To observe the therapeutic action of earth enteral nutrition after jejunum interposition in patients with carcinoma of gastric cardia.Methods: Sixty-two patients after jejunum interposition were divided into early enteral nutrition group(n=33) and parenteral alimentation group(n=29).The clinical observation index and nutrition index were compared between the two groups.Results: The enteral nutrition group had more advantages than the parenteral alimentation group in the aspects of clinical observation index postoperative complication and nutrition index.Conclusion: Early enteral nutrition could improve gastrointestinal function and nutritional state and decrease the incidence rate of postoperative complication.