This study sought to assess the effects of Quercetin and Enalapril on urinary protein excretion and amount of platelet-derived growth factor-B (PDGF-B) and vascular endothelial growth factor-1 (VEGF-1) in renal tissue of diabetic rats. 29 streptozotocin-induced diabetic rats were divided into 3 groups, diabetic control group (group D, n=12); Enalapril group (group E, n=10); Quercetin group (group Q, n=7). In addition, there was one normal control group (group N, n = 5). The urinary protein excretion of 24 hours was measured at 4, 8, 12 weeks. All rats were sacrificed at 12 weeks. The amounts of PDGF-B and VEGF-1 in renal tissue were measured by immunohistochemical techniques. The 24-h levels of urinary protein excretion of D,Q and E groups were higher than that of N group; the level of Q, E groups were lower than that of D group; there was no difference between Q and E group. The expression levels of PDGF-B and VEGF-1 in renal tissue of D, Q, and E groups were significantly higher than that of N group the levels of Q and E groups were significantly lower than that of D group, no difference was found between Q and E group. The protective role of Quercetin and Enalapril in lowering urinary protein excretion may be related to the decreased amounts of PDGF-B and VEGF-1 in renal tissue.
Animals ; Diabetes Mellitus, Experimental ; metabolism ; Enalapril ; pharmacology ; Kidney ; metabolism ; Male ; Proteinuria ; metabolism ; Proto-Oncogene Proteins c-sis ; metabolism ; Quercetin ; pharmacology ; Random Allocation ; Rats ; Rats, Wistar ; Vascular Endothelial Growth Factor A ; metabolism

Background Stem cell transplantation represents a promising treatment option for patients suffering from degenerative disorders.Accumulating evidences indicate that mesenchymal stem cells (MSCs) are able to differentiate into retinal pigment epithelial (RPE)-like cells.However,MSCs are difficult to obtain.Human adipose mesenchymal stem cells (ADSCs) are proved to have similar properties to MSCs,but relevant study is less.Objective This study was to assess the feasibility of human ADSCs differentiating into RPE-like cells and the safety of its application in vivo.Methods The third generation of human ADSCs were incubated into 6-well plate,and 100 ng/ml epithelial growth factor,50 μ mol/L taurine and 5×10-7 mol/L retinoic acid were added into the medium 12 hours after cultured to induce the cells,and conventional cultured cells were used as the control group.Induced cells were traced with PKH26,and Pan-cytoke ratin (Pan-CK) monoclonal antibody was used to identify the cells under the fluorescence microscope.Induced RPE-like cell suspension of 1 μl was intravetreally injected in the right eyes of 6 BALB/c mice,and equal volume of PBS was used in the same way in another 6 mice.The animals were sacrificed 1 month after injection,and the retinal morphology was examined by histopathology under the optical microscope.The ultrastructure of retinal ganglion cells (RGCs) was examined by the transmission electron microscope.The use and care of the animals complied with Regulations for the Administration of Affair Concerning Experimental Animals by State Science and Technology Commission.Results Cultured human ADSCs grew well with the slender polygone shape.Cell membranes showed the red fluorescence for PKH26 after induced.In addition,Pan-CK was expressed in the cell membranes with the red fluorescence in the induced cells,but the response was absent in the control cells.One month after intravitreal injection,induced cells located on the retinal surface,and the retinal morphology was clear under the optical microscope.No abnormality in RGCs was seen under the transmission electron microscope.Conclusions Human ADSCs can differentiate into RPE-like cells after induction.PKH26 can mark induced cells well.There is no adverse effect of induced cells on retina after intravitreal injection in a short-term duration in mice.

Objective To analyze the epidemiological characteristics, clinical manifestations, diagnosis and treatment effect of brucella in=nfection, and to provide practical foundation and valuable experience for clinical treatment and prevention of brucellosis.Methods One hundred and nineteen patients with brucella infection hospitalized at the First Hospital of Lanzhou University from January 1st 2011 to July 30th 2011 were enrolled.Clinical data including gender, age, contact history with bovine and clinical manifestations such as fever, sweating and joint and muscle pain were extracted.Diagnosis and treatment effect of these patients were all recorded.The epidemiological characteristics and clinical manifestations were analyzed.Results The majority of patients were middle-aged male, and the number of male cases were 2.5 times of female cases.The brucella infections were observed all seasons in Lanzhou, while most cases were observed between May and July.A total of 78 cases had clear animal contact history.Among them, 53 cases (44.54%) had contact history with bovine.Main clinical manifestations included fever (n=84, 70.59%), muscle and joint pain (n=93, 78.15%), sweating (n=52, 43.70%), fatigue (n=29, 24.37%), and the most common clinical symptoms was joint and muscle pain.Blood routine test showed neutropenia (n=25, 21.01%), increase in blood sedimentation (n=34, 28.57%) and blood coagulation dysfunction (n=30, 25.21%).Liver function examination showed increase in ALT (n=37, 31.09%) and AST (n=43, 36.13%).Other examination showed that splenomegaly (n=28, 23.52%) was the most common finding, and liver diffuse lesions (n=22, 18.49%) ranked second.The most common drugs were doxycycline (n=79, 66.39%), rifampin (n=60, 50.42%) and cephalosporins (n=50, 42.02%).Among them, 45 cases (37.82%) were treated with combination therapy of rifampin and doxycycline, and 31 cases were treated with combination therapy of doxycycline and rifapentine or cephalosporins.Totally 112 cases (94.12%) recovered.Conclusions The majority of patients with brucellosis are male.The clinical manifestations of brucellosis are varied.Clinicians should pay attention to identify and prevent misdiagnosis.The timely and effective treatment should be provided according to patients' conditions.The relevant departments should also strengthen supervision and education of brucellosis.

AIM To observe whether acute stimulation of BRL 37344, a β3-adrenergic receptor (β3-AR) agonist, has the same effects of exacerbating hemodynamics and increasing in β3-AR expression on rats with failing heart as chronic administration. METHODSRats received two doses of isoprenaline (Iso, 340 mg·kg-1, sc, with a 24-h interval) to prepare heart failure model. After 8 weeks, rats were given iv BRL 37344 0.4 nmol·kg-1·min-1 for 10 min. Hemodynamics were measured at 0, 10, 30 min, 1, 2, 3 h, 1, 2 and 7 d after BRL 37344. Levels of β-AR mRNA in myocardium were measured at 0, 1, 2 and 7 d after BRL 37344 by reverse transcription-polymerase chain reaction. RESULTSCompared with Iso group, heart rate, left ventricular end systolic pressure and +dp/dtmax were significantly higher, and left ventricular end diastolic pressure was significantly lower during 1-3 h after BRL 37344 injection in Iso+BRL group. Then, they were restored to the same level as that prior to BRL 37344 injection. Compared with normal control, the levels of β1-, β2- and β3-AR mRNA displayed no significant change in BRL group;the level of β1-AR mRNA was lower and the level of β3-AR mRNA was higher in Iso group. In Iso+BRL group, much more lower β1-AR mRNA level and much higher β3-AR mRNA level were shown on d 2 and d 7 than Iso group. CONCLUSION Acute administration of β3-AR agonist has a shorter improved hemodynamics. But it caused the same result as chronic administration in reduction of β1-AR mRNA and increment of β3-AR mRNA in failure hearts, which may aggravate the cardiac functions.

Objective To evaluate the feasibility and value of quantitatively assessing left ventricular systolic function in rats with myocardial infarction (MI) by myocardial contrast echocardiography (MCE) based on mathematical morphology algorithm.Methods SD rats model of MI were mede,then MCE were performed before MI and at 1,3 weeks after MI.In vitro study:based on the principle of binary morphology,segmentation of endocardium was acquired using dilation,erosion,closed operations and connected domain object tag-based.The automatic segmentation of endocardial contour was compared with the manual segmentation boundary.In vivo study:the left ventricular area was calculated using the software,and the area variation fraction (AVF),a new index of left ventricular systolic function,were acquired.The correlation between AVF and left ventricular ejection fraction (LVEF) was analyzed.The value of AVF for diagnosis for left ventricular dysfunction was evaluated by ROC curve.Results ① The cross-correlation coefficient (CCC) and percent error (PE) between automatic contours and manual boundary were more than 0.90 and less than 9％,respectively.② AVF correlated positively with LVEF (r =0.934,P ＜ 0.001).③ ROC analyses showed the area under curves for AVF diagnosing left ventricular dysfunction was 0.834.The best cutoff value was 27.5 ％ for diagnosing left ventricular dysfunction with the sensitivity of 85 ％ and specificity of 60 ％.Conclusions Left ventricular endocardium can be identificated automatically and rapidly by MCE based on mathematical morphology algorithm.AVF can assessed quantitatively left ventricular systolic function in rats with myocardial infarction.

Objective To find out the distribution of TCM constitution on the patients with stroke in Beijing. Method The TCM Constitution Questionnaire was used to evaluate 489 patients with stroke in three hospitals in Beijing. Results The qi-deficiency constitution (140 patients, 28.63%), yin-deficiency constitution (95 patients, 19.43%), blood-stasis constitution(89 patients, 18.20%) and phlegm-heat constitution (73 patients, 14.93%) were the most common constitution, while qi-depression constitution (22 patients, 4.50%) and yang-deficiency constitution (20 patients, 4.09%) were the less common. The top three constitution in middle aged wereqi-deficiency (33 patients, 27.27%), phlegm-heat (23 patients, 19.01%) and blood stasis (22 patients, 18.18%). The top three constitution in the aged groupwere qi-deficiency (107 patients, 29.08%), yin-deficiency (76 patients, 20.65%) and blood-stasis (67 patients, 18.21%). Conclusions Stroke is closely related with imbalance of TCM constitution. The prevention and treatment of stroke patients with different ages should vary according to the constitutions.

Objective: To explore the changes of peripheral leukocyte’s telomere length (LTL) in patients of premature coronary artery disease (PCAD) with inlfuencing factors. Methods: Our research was conducted in 2 sets of groups, by coronary artery condition: PCAD group,n=128 including 88 patients with ACS, 40 with SCAD and Non-CAD group,n=128 subjects; by age status: the age≤30 years, 31-40 years, 41-50 years, 51-60 years had 2, 14, 65, 47 patients in each group respectively. Peripheral LTL was detected by lfuorescent quantitative analysis, the relationship between LTL and PCAD with inlfuencing factors were studied by Spearman correlation analysis. Results: In PCAD group, compared with SCAD patients, ACS patients had more male gender, higher Gensini score, lower T/S ratio and shorter LTL, allP<0.05. Compared with Non-CAD group, PCAD group had decreased T/S ratio (0.88 ± 0.86) vs (1.10 ± 0.57),P<0.05. T/S ratio was negatively related to age in both PCAD group (r=-0.275,P=0.002) and Non-CAD group (r=-0.316,P=0.000). Spearman correlation study presented that in PCAD group, LTL was negatively related to hyperlipidemia (r=-0.415,P=0.049) and diabetes (r=-0.472,P=0.036); multi linear regression analysis indicated that in PCAD group, LTL was negatively related to age (B=-0.023,P=0.038) and in Non-CAD group, LTL was negatively related to age (B=-0.027,P=0.000), smoking (B=-0.278,P=0.012), HDL-C (B=-0.297,P=0.046). Conclusion: PCAD had more male ACS patients with shorter LTL and severer coronary lesions; LTL was negatively related to hyperlipidemia and diabetes, age was an important inlfuencing factor for LTL shortening.

Discussions are made on the etiology and pathogenesis, classification, stages, special prescriptions, special medicines, Chinese patent medicines and external treatment of traditional Chinese medicine.This paper reviews the treatment of infectious mononucleosis (IM) in children by integrated traditional Chinese and western medicine in recent years, and provides new ideas for clinical treatment of IM.

Objective:To evaluate and summarize the relevant evidence of comprehensive detumescence treatment of lower limb lymphedema in patients with gynecological malignant tumors, and to provide evidence-based basis for clinical intervention of comprehensive detumescence treatment of lymphedema.Methods:This study was an evidence - based nursing research. Databases such as BMJ Best Practice, UpToDate, PubMed, CNKI, Wanfang and other domestic and foreign databases, as well as websites such as the Australian Lymphology Society, the International Lymphedema, and the European Clinical Oncology Association were searched for relevant evidence and evaluation of comprehensive treatment of gynecological malignant tumor-related lower limb lymphedema. The search time was from the establishment of the database to April 1, 2022.Results:A total of 18 articles were included, including 2 guidelines, 5 systematic reviews, 4 expert consensus, 2 evidence summaries, 4 randomized controlled trials and 1 best practice. Twenty-eight evidence were summarized from 7 aspects : treatment cycle and edema stage, free-hand lymphatic drainage, graduated compression stockings, skin care, elastic socks, functional exercise and health education.Conclusions:The evidence summarized in this study can provide reference for clinical medical staff to formulate comprehensive treatment plans for lower limb lymphedema. Evidence-based practice should consider the individual status of patients and clinical scenarios, and provide personalized comprehensive treatment plans for patients with lower limb lymphedema of gynecological malignant tumors as soon as possible to improve the quality of life of patients.

Objective:To retrieve, obtain and summarize the best evidence for the prevention of recurrence in patients with diabetic foot, and to provide reference for clinical practice.Methods:According to the "6S" model of evidence-based resources, JBI, UpToDate, BMJ Best Practice, Cochrane Library, International Working Group on the Diabetic Foot, International Diabetes Federation, National Istitute for Health and Clinical Excellence, PubMed, EmBase, China National Knowledge Internet, Wanfang and China Biology Medicine disc were searched by computer for the prevention of recurrence of diabetic foot patients. The retrieval time limit was from the establishment of the database to April 2022. Two researchers independently evaluated the included literature and extracted the literature that met the quality standards.Results:Totally 12 articles were included at last, including 5 guidelines, 3 expert consensus and 4 Meta-analysis. From the six dimensions of the necessity and risk factors of recurrence prevention in diabetic foot patients, decompression brace prevention, surgery and wound management prevention, nutritional therapy prevention, health education and lifestyle prevention, monitoring and analysis, 18 pieces of best evidence were summarized.Conclusions:The best evidence for the prevention of recurrence of diabetic foot patients was summarized to provide evidence-based basis for management decision makers and decision implementers to prevent recurrence of diabetic foot. In the process of practice, medical workers should also fully evaluate the promoting factors and hindering factors in order to ensure that evidence can be better applied to clinical practice and serve patients.