Objective To study the effects of Pervanadate(Per) on BET-2 cells cell cycle arrest and apoptosis induced by ionizing radiation. Methods The BET-2 cells were radiated with 0, 1, 3, 5, 7, 10 Gy and divided into PTP(protein tyrosine phosphatases)-specific inhibitor Per-treated group and non-pervanadate group(served as a control) and then incubated after ?-ray irradiation. Cell cycle and apoptosis were measured by FCM and Hematoxylin-Eosin staining at different time phases. Results G2/M phase arrest and apoptosis were induced in a pattern of dose-effect and time-course after irradiation in the BET-2 cells. In Per-treated group, G2/M phase arrest increased more notably, and apoptosis decreased markedly. Conclusions These studies suggested that Pervanadate potentialy enhance the ratio and prolong the term of G2/M phase arrest, and facilitate the damaged hematopoietic cells to be repaired, remarkably prevent radiated-cells from apoptosis.

Objectives To study the age and gender distribution of clinical and non-clinical depressive symptoms in chil-dren, and the potential link between non-clinical and clinical depressive symptoms. Methods 4520 children aged 8-15 years old were screened for mental disorders by Strength and Dififculties Questionnaire (SDQ) and the Development and Well Being Assessment (DAWBA), and further assessed by the Depression Self-Rating Scale for Children (DSSC). Fifty-three children diagnosed as depressive disorder were included in clinical group and 1504 children without depression disorders whose DSSC scores≥14 were included in non-clinical group. The relationship between gender, age and DSSC scores was analyzed. Results Interaction effect on DSSC scores between gender and age was found in clinical group (F=4.40, P=0.049), but not found in non-clinical group (F=1.04, P=0.409). DSSC scores of girls were higher than that of boys in clinical group (t=2.16, P=0.048). There was no statistically signiifcant main effect of gender in non-clinical group (F=0.21, P=0.646). No signiifcant difference in DSSC scores existed among different age groups in clinical group (F=0.82, P=0.573). There was signiifcant main effect of age in non-clinical group (F=1.96, P=0.048). Conclusions There were different age and gender distribution of clinical and non-clinical depressive symptoms in children.

Objective To investigate the clinical features and disease-causing mutations of familial hypomagnesaemia with hypercalciuria and nephrocalcinosis.Methods In February 2016,a 24 year old female patient with left kidney stone and nephrocalcinosis in bilateral kidneys was admitted to our hospital.One month prior to this admission,she had been treated by PCNL to remove the most part of left kidney stone in otherhospital.Mter admission,She was found hypomagnesaemia (serum magnesium 0.65 mmol/ L) and hypercalciuria (24h urine calcium 364.0 mg) but with normal renal function (serum creatinine 101.5μmol/L).And the remained part of left kidney stone was removed by flexible ureteroscope.As she was considered probably with an autosomal recessive FHHNC,an analysis of CLDN16 and CLDN19 gene mutations was performed using her and her parents'peripheral white blood cells.Results Mutation analysis revealed this patient had two heterozygous mutations in the CLDN16.One is an one-base deletion mutation in the 123th codon in exon 2:368delA.The other is a missense mutation in the 139th codon in exon 2:416C →T which resulted in an amino acid change Ala139Val.Her parents respectively had one of each heterozygous mutation.In the six months follow-up,an oral administration with hvdrochlorothiazide,potassium citrate,and calcium magesium supplements significantly reduced her hypomagnesaemia (serum magnesiun 1.0 mmol/L) and hypercalciuria (24-h urine calcium 156.0 mg),and no stone recurrence and aggravation of nephrocalcinosis and renal dysfunction occurred.Conclusions We diagnosed a patient with FHHNC who had a novel compound heterozygous mutation of CLDN16.This rare disease should be suspected if there are three constant clinical features of hypomagnesaemia,hypercalciuria and nephrocalcinosis,and verified with CLDN16 and CLDN19 gene test.Currently the option for treatment of FHHNC is symptomatic treatment until severe deterioration of renal function.The hydrochlorothiazide,potassium citrate,and calcium magesium supplements may have considerable effects on hypomagnesaemia and hypercalciuria.

OBJECTIVETo investigate the anti-fibrosis effects and mechanisms of fenofibrate on hepatic fibrosis using a mouse model of fibrosis induced by carbon tetrachloride (CCl4).

METHODSTwenty-six male C57BL mice were divided into the following three groups: CCL4-induced untreated model control (n = 10), CCl4-induced fenofibrate-treated model (n = 10), and uninduced/untreated normal control (n = 6). All animals were sacrificed after the 5 weeks of induction and treatment. Serum levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), hyaluronic acid (HA) and procollagen III amino-terminal peptide (PIIINP) were determined by routine biochemistry assays. Liver content of hydroxyproline (HYP) was measured by spectrophotometry. Liver content of malonic aldehyde (MDA) and superoxide dismutase (SOD) was measured by enzymatic assays. mRNA expression levels of liver fibrosis-associated factors were determined by PCR, and included alpha-smooth muscle actin (a-SMA), transforming growth factor-beta1 (TGFbeta1), type I collagen-alpha (Collagen1a), peroxisome proliferator-activated receptor-alpha (PPARa), and the inflammatory cytokines tumor necrosis factor alpha (TNFa) and interleukin-6 (IL-6). Finally, the degree of inflammation and fibrosis were assessed by histological analysis using hematoxylin-eosin and Sirius red staining.

RESULTSCompared to the untreated model group, the fenofibrate-treated model group showed significantly lower levels of serum ALT (55.72+/-1.20 vs. 38.72+/-1.25 IU/L), HA (236.20+/-17.57 vs. 152.9+/-13.06 mug/L) and PIIINP (41.66+/-1.89 vs. 34.32+/-1.53 mug/L) (all P less than 0.05). The fenofibrate-treated group also showed a significantly higher level of hepatic SOD content (untreated model: 67.00+/-4.65 vs. 101.1+/-5.32) but significantly lower level of hepatic MDA content (14.67+/-0.93 vs. 10.17+/-0.60 nmol/mg) and lower level of hepatic HYP content (0.67+/-0.80 vs. 0.41+/-0.50 mg/g) (all, P less than 0.05). In addition, the fenofibrate-treated group showed significantly reduced mRNA expression levels of a-SMA (6.83+/-0.88 vs. untreated model: 11.57+/-1.31), TGFbeta1 (67.83+/-4.65 vs. 112.30+/-4.81), Collagen1a (67.83+/-4.65 vs. 112.30+/-4.81), TNFa (17.43+/-2.32 vs. 37.83+/-4.69), and IL-6 (4.00+/-0.49 vs. 5.62+/-0.54), but significantly increased PPARa (0.30+/-0.03 vs. 0.18+/-0.03) (all, P less than 0.05). Finally, the degree of CCL4-induced hepatic fibrosis was attenuated by the fenofibrate treatment.

CONCLUSIONFenofibrate can reduce the degree of liver fibrosis in mice induced by CCl4. The mechanism may involve up-regulation of PPARa, inhibition of the inflammatory response, and enhancement of SOD antioxidant activity.

Animals ; Fenofibrate ; therapeutic use ; Inflammation ; drug therapy ; Liver Cirrhosis, Experimental ; drug therapy ; metabolism ; pathology ; Male ; Mice ; Mice, Inbred C57BL ; PPAR alpha ; metabolism ; Superoxide Dismutase ; metabolism

Aim To explore the role of nicotinamide adenine dinucleotide phosphate (NADPH) oxidase in high fat-induced oxidative stress injury in human umbilical vein endothelial cells (HUVECs).Methods HUVECs were exposed to different concentrations of palmitic acid(0.1,0.2,0.4,0.8 mmol · L-1) for 24 h and different time points of 0.4 mmol · L-1 palmitic acid(0,12,24,48 h).Cell viability was measured by Cell Counting Kit 8,and the protein expression of NADPH oxidase subunits such as p22phox,p47phox,p67phox and gp91phox were determined by Western blot.The expression of reactive oxygen species (ROS) in HUVECs was detected by immunofluorescence.Results Cell proliferation rate of HUVECs stimulated by 0.4 mmol · L-1 palmitic acid for 24 h and 48 h was significantly reduced.In the next experiment,model group was accordingly set as HUVECs stimulated by 0.4 mmol · L-1 palmitic acid for 24 h.The expression of NADPH oxidase subunits such as p22phox,p47phox,p67phox and gp91phox significantly increased at 24 h and 48 h after 0.4 mmol· L-1 palmitic acid stimulation (P ＜ 0.05),and the difference.between the 24 h group and the 48 h group was not significant (P ＞ 0.05).The expression of ROS in HUVECs significantly increased at 24 h and 48 h after O.4 mmol · L-1 palmitic acid stimulation (P ＜ 0.05),and the difference between 24 h group and 48 h group was not significant (P ＜ 0.05).Compared with the model group (0.4 mmol · L-1 palmitic acid stimulation for 24 h),the NADPH oxidase inhibitor diphenyliodonium (DPI,10 μmol · L-1) pretreatment could significantly decrease the expression of ROS in vascular endothelial cells (P ＜ 0.05).Conclusion Activated NADPH oxidase might play an important role in treatment of high fat-induced oxidative stress injury in vascular endothelial cells.

OBJECTIVETo evaluate the diagnosis and management of adrenal myelolipoma.

METHODSThe clinical data of 26 cases were analyzed retrospectively and the selected articles were reviewed. There were no specific clinical symptom and endocrine abnormality, except increasing catecholamine in 2 cases. All cases but two were diagnosed by B-model ultrasound scanning (B-US), CT or magnetic resonance imaging (MRI).

RESULTSTwenty-six cases were surgically treated, the diameter of the tumor was 5 - 10 cm, simple tumor resection was performed in 16 cases, and complete adrenal resection was performed in 10 cases. All the operated cases were proved by pathologists. The duration of follow-up was from 6 - 28 months after surgery. No recurrence was observed.

CONCLUSIONSThe diagnosis of adrenal myelolipoma could be established based on B-US, CT or MRI. The tumors whose diameter is larger than 5 cm in size should be removed.

Adrenal Gland Neoplasms ; diagnosis ; surgery ; Adrenalectomy ; Adult ; Female ; Follow-Up Studies ; Humans ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Myelolipoma ; diagnosis ; surgery ; Retrospective Studies ; Tomography, X-Ray Computed

Objective To analyze the magnetic resonance imaging (MRI) of the spinal cord and clinical characteristics in patients with autoimmune glial fibrillary acidic protein (GFAP) astrocytopathy.Methods A total of 1 040 samples of cerebrospinal fluid (CSF) and sera collected in the Second Affiliated Hospital of Guangzhou Medical University from March 2013 to June 2018 were tested with tissue-and cell-based assays,and 42 patients were found positive for GFAP-IgG.The clinical data and MRI characteristics of the spinal cord of 19 patients who were positive for GFAP-IgG in CSF with autoimmune GFAP astrocytopathy and lesions in the spinal cord were retrospectively reviewed.Results There were 12 females and seven males among the 19 patients,with onset age of (44±17) years.The main manifestations of these patients included limb weakness (14/19),abnormal vision (5/19),headache (4/19),seizure (4/19),dementia (3/19),etc.On MRI of the spinal cord,five patients showed involvement in the cervical cord alone,eight showed involvement in the thoracic cord alone and six had both cervical and thoracic segment involvement.Fifteen patients had longitudinally extensive myelitic abnormalities (≥3 vertebral segments long).Seven enhancement patterns were encountered.Lesions were displayed in the spinal cord and brain in eight patients.Central gray matter involvement in the spinal cord was found in all the 19 patients.Conclusions Autoimmune GFAP astrocytopathy more frequently presents in females than in males.MRI of the spinal cord has complex presentations and longitudinally extensive myelitic abnormalities usually.Patients often show central gray matter involvement in the spinal cord.Myelitic abnormalities present more often in thoracic segment than in cervical segment.Abnormalities in lumbar segment are less encountered.

Objective To investigate the epidemiological characteristics of Dengue and the E gene of the new isolated strains.Methods Epidemiological data and serum samples were collected.Serotypes were detected by real-time PCR and virus was isolated in C6/36.E gene of the new isolated strains were sequenced and analyzed by Mega 4.0.Results The cases of Dengue reached at the peak during September and November,with Serotype 1,2 and 4 were involved.Five strains of serotype 1 were isolated,with 4 of them fell into the clad of Asia genotype,and 1 belonged to America/Africa genotype.Conclusion The strains isolated in Guangzhou showed a high identity to the Southeast Asian strains.There seemed high risk of outbreak of Dengue in this area,However,the Dengue virus might have already been localized.

OBJECTIVETo explore the influence of Kingsbrain (GETO) on the learning memory impairment of rats with cerebral ischemia.

METHODRats with cerebral ischemia were administered GETO orally once a day for one month. The ability of spatial-learning memory of rats was evaluated by Morris Water Maze (MWM). Duxil was used as a positive control.

RESULTthe results of place navigation of MWM showed that at the 3rd time of swimming training, the escape latency of rats of the GETO group, Duxil group and Sham group were shorter than that of model group. The escape latency were (54.1 +/- 43.94), (55.9 +/- 43.49), (50.4 +/- 34.99) and (85.4 +/- 42.8) s, respectively; but there was no significantly difference. After the 6th time of swimming training, the escape latency of rats of the GETO group (37.8 +/- 38.69) s, the Duxil group (37.4 +/- 38.03) s and the sham group (26.9 +/- 21.63) s were significantly shorter than that of model rats (77.5 +/- 47.59) s, P < 0.05, respectively. Comparison of the swimming distance among groups were similar to the escape latency among groups. In the test of spatial probe, results of the ratio of the swimming time of platform quadrant (tP) vs the total swimming time (tT) and the ratio of the swimming distance of platform quadrant (dP) vs the total swimming distance (dT) indicated that the ratios of the GETO group (0.347 +/- 0.0662, 0.344 +/-0.055 1), the Duxil group (0.345 +/- 0.0984, 0.34 +/- 0.0934) and the sham group (0.35 +/- 0.0662, 0.349 +/- 0.0589) were significantly higher than those of the Model group (0.261 +/- 0.0689, 0.274 +/- 0.0544), P < 0.05, respectively.

CONCLUSIONGETO can significantly improve the spatial learning and memory ability of rats with cerebral ischemia, which provides the pharmacodynamics evidence for its clinical application of improveing the learning and memory ability in poststroke patients.

Animals ; Brain Ischemia ; etiology ; physiopathology ; Drug Combinations ; Drugs, Chinese Herbal ; isolation & purification ; pharmacology ; Infarction, Middle Cerebral Artery ; complications ; Male ; Maze Learning ; drug effects ; Memory ; drug effects ; Panax ; chemistry ; Plants, Medicinal ; chemistry ; Random Allocation ; Rats ; Rats, Sprague-Dawley

Objective:To explore the effects of participatory interactive teaching in the clinical internship course of pediatric infectious diseases.Methods:217 undergraduate students of grade 2018 majoring in pediatrics were selected as the experimental group, and 208 undergraduate students of grade 2017 majoring in pediatrics were selected as the control group. The experimental group used the teaching method of BOPPPS combined with case-based learning and team-based learning, while the control group adopted the traditional teaching method. Evaluate the learning effectiveness by comparing the formative evaluation and theoretical exam scores of the two groups , and a questionnaire survey was conducted for the students in the experimental group to investigate teaching feedback. SPSS 19.0 was used to perform the t test for data analysis. Results:The experimental group had significantly better scores than the control group in final theoretical examination [(75.04±9.12) vs. (71.03±9.51), P<0.05] and formative evaluation [(81.03±6.13) vs. (70.02±10.32), P<0.05]. According to the results of the questionnaire survey on teaching satisfaction, the students were satisfied with the interactive participatory teaching method in the four aspects of improving learning interest, improving learning ability, classroom satisfaction level, and course acceptance level. Conclusions:The pragmatic teaching reform in the internship of pediatric infectious diseases is highly accepted by students and beneficial to improving students' clinical thinking ability and comprehensive quality, which is worth further application and promotion.