A novel citrinin derivative, penicitrinol L (1), along with two known analogues, penidicitrinin B (2) and pennicitrinone A (3) were isolated from the marine-source fungus Penicillium citrinum. The structure of the new compound was elucidated by spectroscopic methods including one and two-dimensional NMR as well as high-resolution mass spectrometric analysis. Furthermore, compound 1 showed modest cytotoxic activity against HL-60 cell line and compound 3 showed weak cytotoxic activity against A375 cell line.
Antineoplastic Agents ; chemistry ; isolation & purification ; Citrinin ; analogs & derivatives ; chemistry ; isolation & purification ; HL-60 Cells ; Humans ; Magnetic Resonance Spectroscopy ; Penicillium ; chemistry

Objective To isolate and identify the causative agent in an incident with crowd fever of adults in Henan province.Methods The cells was inoculated by the throat swabs of the patients and followed by neutralization assay and other molecular methods.Then indirect immunofluorescence assay was performed to detect the specific IgM/IgG antibodies against virus in the serum of the patients.Results We have isolated 2 strain adenoviruses from 10 swab samples,which were both identified as Ad11 by sequence analysis and neutralization test.6 of 10 samples were positive fer IgM specific for adenovirus and 3 positive for IgG.The remaining sample was negative for both.Conclusion The causative agent in this incident with crowd fever of adults was Ad11 in group B.

Objective To study the effect of mind mapping on cognitive ability in elderly with mild cognitive impairment(MCI).Methods A total of 60 elderly aged were randomly divided into training group (30 cases) and control group(30 cases).Elderly in control group received routine maintenance of living habits.The elderly in the training group received miud mapping training intensively for 30 minutes every day for 12 months.The training effects were evaluated by mini-mental state examination(MMSE) and abilities of daily living scale(ADL).Results After training,the score of MMSE in the training group( six months:25.55 ± 1.17;one year:26.30 ±1.64) were significantly higher than before intervention( P＜ 0.05 ) and higher than that of control group(24.90 ± 1.97) (P＜0.05).The score of ADL in the training group( 14.47 ±0.64) were significantly lower than before intervention( 14.47 ±0.64) and that of control group( 15.47 ± 1.19) ( P＜ 0.05).Conclusion Mind mapping training can improve the cognitive abilities of MCI older people.

Animal models with kidney disease are generally divided into two types. One belongs to the models which imitate human kidney disease by the artificial operations, such as anti-glomerular basement membrane antibody nephritis, Heymann nephritis, anti-Thyl. 1 antibody nephritis, BSA nephritis and puromycin nephropathy. The other one pertains to the models which make themselves kidney disease, and appear the pathological characteristics naturally as like as human, such as HIGA mice with IgA nephropathy and NZB/WF1 and MRL/1pr mice with lupus nephritis. In addition,the transgenic animal models with kidney disease can also be established by the modern molecular biologic techniques including gene knockout and siRNA transfection. As for the studies related with kidney disease in pharmacodynamics and pharmacology of Chinese herbal medicine (CHM), it is important to understand deeply the features of each animal model with kidney disease, and select accurately the proper models according to the different experimental objectives, and then, build the special models provided with the combination of disease with syndrome in traditional Chinese medicine (TCM). Therefore,it is the developmental direction for the further study to establish animal models with kidney disease, which should possess the characteristics of syndrome in TCM.
Animals ; Diabetic Nephropathies ; etiology ; Disease Models, Animal ; Humans ; Kidney Diseases ; etiology ; Medicine, Chinese Traditional ; Mice ; Streptozocin

AIM: To observe the inhibitory effect of recombinant human endostatin (rhES) on plaque angio-genesis, and to explore the regulatory mechanism of Dll4 /Notch pathway in the anti-angiogenic effect of rhES.METH-ODS: Male Wistar rats were randomized into 3 groups: normal control group (N group), atherosclerotic model group (AS group), and rhES treated group (AS +rhES group).The rats in N group were fed a normal diet, while the remaining 2 groups were established to atherosclerotic rat model via high-cholesterol diet, intraperitoneal injection of vitamin D3 and aor-tic balloon injury.The rats in AS +rhES group received intraperitoneal injection of rhES.The blood total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), C-reactive protein (CRP), interleukin-1 (IL-1) and troponin I (TnI) were measured.The atherosclerotic abdominal aortas were taken for pathological observation.Immu-nohistochemical staining was used to measure the density of neovessels in the plaques, which were marked by CD31.The protein levels of Dll4 and Notch1 in the aortas were analyzed by Western blot.RESULTS: The levels of blood TC, TG, LDL-C, CRP and IL-1 in AS group and AS +rhES group were much higher than those in N group (P <0.05), and no sta-tistical difference between AS group and AS +rhES group was observed.The expression of CD31 in AS group was the high-est among all groups.Compared with AS group, the density of neovessels in the plaques of AS +rhES group decreased sig-nificantly (P <0.05).The protein expression of Dll4 and Notch1 in AS group was lower than that in N group (P <0.05). Compared with AS group, the protein expression of Dll4 and Notch1 increased significantly (P <0.05).CONCLUSION:rhES has the ability to inhibit plaque angiogenesis in rats.The activation of Dll4 /Notch pathway may be the mechanism of rhES in inhibiting plaque angiogenesis.

Background and purpose:Adrenal schwannoma is extremely rare, mostly benign, lack of special characteristics in clinical and imaging presentation. The aim of this study was to analyze the computed tomography (CT) and magnetic resonance imaging (MRI) findings of adrenal schwannoma, in order to improve the accuracy of diagnosis. Methods:The CT and MRI features of 8 patients with pathology-proven adrenal schwannoma were reviewed. Among the 8 patients, 4 patients underwent CT scanning, 3 patients underwent MR scanning, 1 patient underwent both CT and MR scanning.Results:The tumors were located at the left adrenal in 5 cases and at the right in 3 cases. Tumors showed no signs of endocrine activity in all cases. All tumors were well-circumscribed, oval or lobulated masses, 2 cases with calcification, 5 cases with cystic change, 2 cases with intratumoral hemorrhage. CT or MR enhancement showed moderate, heterogeneously delayed enhancement in 7 cases with enhanced capsule. Four cases showed rabbit tail sign.Conclusion:The imaging and pathological features of adrenal schwannoma have certain characteristics. The CT and MRI features, such as intact capsule, cystic degeneration, rabbit tail sign, calcification and progressive enhancement, are helpful to improve the accuracy of diagnosis of adrenal schwannoma.

Background The establishment of diabetic animal model is a crucial step for the study about diabetic eye diseases. At present,the main modeling method include the injection of streptozotocin and alloxan. But the shortcoming of the former is an expensive price, and that of the later is high death rate of animals. Objective This experiment was to discuss the way which decrease the death of alloxan-injected animal and explore the effects of high blood glucose on the posterior capsular opacification (PCO). Methods Forty clean healthy male New Zealand white rabbits were randomly divided into 2 groups. 90mg/kg of alloxan were injected via ear vein once in 20 rabbits to create the diabetic animal models,and the equivalent amount of normal saline solution was injected at the same way as normal blood glucose group. The successful models were selected in the animals with the blood glucose level over 12. 0 mmol/L two weeks later, and PCO of lens were graded based on the method of Odrieh under the slit lamp. Extracapsular lens extraction was then performed on the right eye of rabbits in both groups, and the posterior capsules were obtained from these eyes at the 6th, 10th and 14th days after operation. The expression of proliferating cell nuclear antigen ( PCNA ) in posterior capsular lens epithelial cell was detected by immunohistochemistry. Results The modeling successful rate was 70% after injection of alloxan. The body weight of rabbits in high blood glucose group was significantly lowed and the blood glucose was significantly elevated in comparison with normal blood glucose group ( all P<0. 05). Two weeks after surgery ,2 eyes occurred 2 grade of PCO and only one eye showed the 1 grade of PCO in the high blood glucose group. However, 1 grade of PCO was found in 3 eyes in the normal blood glucose group. Biopsy revealed that PCNA was positively expressed in the cell nuclei of LECs in high blood glucose group rather than the normal blood glucose group from the 10th day after surgery. The proliferation index of PCNA was 0. 86±0. 04 and 0. 25±0. 03 respectively in high blood glucose group and normal blood glucose group, showing a significant difference between them (t = -16. 171 ,P = 0. 000). Conclusion Stable diabetic models of rabbits can be created by intravenous injection of 90 mg/kg alloxan. High blood glucose level is one of the important factors for the development of PCO.

OBJECTIVETo investigate the relationship between methylation status of APC gene in both peripheral blood and tumor tissues and clinical-pathology characteristics in patients with esophageal squamous cell carcinoma(ESCC), and to study the dynamic change of APC methylation in peripheral blood in the perioperative period.

METHODSReal-time MSP technique was used to detect methylation status of APC in tumor tissues, adjacent normal tissues and peripheral blood on the day before the surgery, intraoperative, postoperative day 7 in 76 cases with ESCC. Sixty healthy volunteers matched by age and gender were randomly selected as controls.

RESULTSThe methylation rate of APC in tumor tissue and peripheral blood was 44.74%(34/76) and 42.11%(32/76), respectively, which were significantly higher than that in adjacent normal tissue and controls [6.58%(5/76) and 1.67%(1/60), P=0.000]. The methylation rates showed good agreement between tumor tissues and peripheral blood, which could be verified by ROC curve(A Zeta=0.849, P=0.000). APC methylation rate was significantly related to pathological staging, lymph node metastasis, depth of invasion, and invasion of nerve and vessel (P<0.05). The results demonstrated that family history of cancer was independently associated with APC methylation in peripheral blood(P<0.05). DNA methylation rates in peripheral blood showed an initial increase and then decreased in the preoperative period, intraoperative and postoperative.

CONCLUSIONThe methylation rates of APC among free DNA in peripheral blood in patients with ESCC reflect tumor progression, and decrease with the solid tumour resection.

Adenomatous Polyposis Coli Protein ; metabolism ; Adult ; Aged ; Carcinoma, Squamous Cell ; blood ; metabolism ; pathology ; Case-Control Studies ; DNA Methylation ; Esophageal Neoplasms ; blood ; metabolism ; pathology ; Female ; Humans ; Male ; Middle Aged

OBJECTIVETo demonstrate the effects and mechanisms of Huangkui capsule (HKC) on renal fibrosis in rats with diabetic nephropathy (DN).

METHODRats were randomly divided into 5 groups, the sham-operated group (Sham group, n = 5), the vehicle-given group (Vehicle group, n = 7), the low dose of HKC-treated group (L-HKC group, n = 7), the high dose of HKC-treated group (H-HKC group, n = 7) and the lipoic acid (LA)-treated group (LA group, n = 7). DN models were induced by intraperitoneal injection of streptozotocin (STZ,35 mg x kg(-1)) twice and unilateral nephrectomy. After models were successfully established, the rats in HKC and LA groups were daily administrated with HKC suspensions (0.75, 2 g x kg(-1)) or LA suspensions (60 mg x kg(-1)) respectively, and at the same time, the rats in Vehicle group were daily administrated with distilled water (2 mL) for 8 weeks. All rats were sacrificed at the end of week 8 to collect blood and renal tissues. UAlb, renal function, renal fibrotic morphologic characteristics, as well as oxidative stress (OS)-related markers, the protein expressions of the key signaling molecules in p38 mitogen-activated protein kinase (p38MAPK) signaling pathway, fibrogenic cytokines and inflammatory factors were examined respectively.

RESULTHKC, similar to LA, improved the general state of health, body weight, UAlb, BUN, UA and Alb in DN model rats. Of note, renal fibrosis was ameliorated in HKC groups,especially in H-HKC group which was better than that in LA group. In addition, HKC not only improved the main indexes of OS in the kidney like LA, but also down-regulated the protein expressions of phosphorylated-p38MAPK (p-p38MAPK), transforming growth factor (TGF)-β1 and tumor necrosis factor(TNF)-α in the kidney, whereas, LA only decreased the protein expression of TNF-α in the kidney in DN model rats.

CONCLUSIONHKC, similar to LA, has the actions of anti-OS in vivo. Moreover, HKC could attenuate renal fibrosis by suppressing the activation of p38MAPK signaling pathway and the protein expressions of fibrogenic cytokines and inflammatory factors in the kidney in DN model rats, which is different from LA.

Abelmoschus ; chemistry ; Animals ; Capsules ; Diabetic Nephropathies ; drug therapy ; metabolism ; pathology ; Drugs, Chinese Herbal ; pharmacology ; Fibrosis ; Kidney ; drug effects ; pathology ; MAP Kinase Signaling System ; drug effects ; Male ; Oxidative Stress ; drug effects ; Rats ; Rats, Sprague-Dawley ; p38 Mitogen-Activated Protein Kinases ; antagonists & inhibitors

OBJECTIVETo explore the effects and mechanisms of multi-glycoside of Tripterygium wilfordii (GTW) on improving glomerular inflammatory lesion in rats with diabetic nephropathy (DN).

METHODDN model was induced by unilateral nephrectomy and intraperitoneal injection of STZ (35 mg x kg(-1)) twice. The rats were randomly divided into 3 groups, the sham-operated group (Sham group, n = 5), the vehicle-given group (Vehicle group, n = 5 ) and GTW-treated group (GTW group, n = 5). After the model was successfully established, the rats in GTW group were daily oral administrated with GTW suspension (50 mg x kg(-1) x d(-1)), meanwhile, the rats in Vehicle group were daily oral administrated with distilled water (2 mL) for 8 weeks. From the beginning of the administration, all rats were killed 8 weeks later. Blood and renal tissues were collected,and then UAlb, renal function, glomerular morphology characteristics and glomerular macrophages (ED1 + cells) infiltration, as well as the protein expressions of inflammatory cytokines including tumor necrosis factor(TNF)-α and interleukin(IL)-lβ, and the key molecules in p38MAPK signaling pathway including p38 mitogenactivated protein kinase (MAPK), phosphorylated p38 (p-p38MAPK) and transforming growth factor(TGF)-β1 were investigated respectively.

RESULTGTW not only ameliorated the general state of health and body weight,but also attenuated UAlb, glomerulosclerosis, the infiltration of glomerular ED1 + cells and the protein expressions of TNF-α, IL-1β, p-p38MAPK and TGF-β1 in the kidney in DN model rats.

CONCLUSIONBy means of DN model rats, we demonstrated that GTW has the protective effect on renal inflammatory damage in vivo via inhibiting inflammatory cells infiltration and inflammatory cytokines expression. Furthermore, GTW could improve renal inflammatory lesion through down-regulating the expressions of the key signaling molecules in p38MAPK pathway such as p-p38MAPK and TGF-β1 ,and inhibiting the activation of p38MAPK signaling in the kidney.

Animals ; Diabetic Nephropathies ; drug therapy ; Disease Models, Animal ; Glomerulonephritis ; drug therapy ; Glycosides ; pharmacology ; MAP Kinase Signaling System ; drug effects ; Male ; Rats ; Rats, Sprague-Dawley ; Transforming Growth Factor beta1 ; analysis ; Tripterygium ; chemistry ; p38 Mitogen-Activated Protein Kinases ; physiology