Acute Disease ; Animals ; Dimethoate ; analogs & derivatives ; poisoning ; Disease Models, Animal ; Male ; Mice ; Muscle Weakness ; chemically induced ; pathology ; Muscles ; pathology

Folic Acid ; administration & dosage ; therapeutic use ; Humans ; Neural Tube Defects ; prevention & control

AIM: To evaluate cell proliferation, apoptosis and migration of human retinal pigment epithelial cells ( RPE) when co - cultured with human marrow mesenchymal stem cells ( hMSCs ) in condition of hypoxia and hyperglycemia so as to explore possible mechanisms of diabetes aggravating choroidal neovascularization ( CNV) preliminarily.
METHODS:Both hMSCs and RPE cells were co-cultured in a transwell system. The experiment was divided into four groups: 21% O2 with 5. 56mmol/L glucose ( control group, A ), 21% O2 with 30mmol/L glucose ( hyperglycemia and normoxia group, B ) , 5% O2 with 5.56mmol/L glucose ( normoglycemia and hypoxia group, C ) and 5% O2 with 30mmol/L glucose ( hyperglycemia and hypoxia group, D) . Cell Counting Kit-8 (CCK-8) was used to detect the proliferation of RPE cells in each group at 12, 24 and 48h respectively. Flow cytometry was performed to observe apoptosis of RPE cells at 24h. Additionally, we assessed migration
capabilities of RPE via transwell assay under the condition of hyperglycemia and hypoxia by co-culturing of hMSCs.RESULTS:In this co-culturing system, at 12, 24 and 48h, group B (1. 61±0. 41, 1. 80±0. 34;1. 91±0. 35), C (1.34±0. 46, 1. 94±0. 40, 2. 14±0. 41) and D (1. 98±0. 47, 2.26±0.42, 2. 55±0. 40) showed significantly higher proliferation rate than group A (0. 92±0. 45, 1. 27±0. 32, 1.59±0. 41, P<0. 05). The migration capabilities of RPE in group B (149. 5±9. 19), C (140±9. 90) and D (170. 5±7. 78) increased dramatically compared with group A ( 114. 5±7.78, P<0.05) at 24h, whereas there was no significant difference of apoptosis ratio among four groups (P>0. 05).
CONCLUSION:By coexistence with hMSCs, the synergy of hyperglycemia and hypoxia can improve migration and proliferation of RPE cells, and have no effect on apoptosis of RPE cells within short period.

The relationship between tyrosine phosphorylation (TP) and protein expression of insulin receptor (InsR) and insulin resistance (IR) in patients with gestational diabetes mellitus (GDM) was investigated. The InsR expression and TP in skeleton muscle tissue were determined by Western blotting and immunoprecipitation in women with GDM (GDM group, n=22), normal pregnant women (normal pregnancy group, n=22) and normal non-pregnant women (normal non-pregnant group, n=13). Fasting plasma glucose (FPG) and fasting insulin (FINS) were measured by oxidase assay and immunoradioassay. The results showed that the levels of FPG (5.61±0.78 mmol/L), FINS (15.42±5.13 mU/L) and Homeostasis model assessment-IR (HOMA-IR) (1.21±0.52) in GDM group were significantly higher than those in normal pregnancy group (4.43±0.46 mmol/L, 10.56±3.07 mU/L and 0.80±0.31 respectively) (P<0.01). The levels of FINS and HOMA-IR in normal pregnancy group were significantly higher than those in normal non-pregnant group (7.56±2.31 mU/L and 0.47±0.26 respectively) (P<0.01). There was no significant difference in the InsR expression level among the three groups (P>0.05). TP of InsR with insulin stimulation was significantly decreased in GDM group (0.20±0.05) as compared with normal pregnancy group (0.26±0.06) (P<0.01). TP of InsR with insulin stimulation in normal pregnancy group was lower than that in normal non-pregnant group (0.31±0.06) (P<0.01). TP of InsR with insulin stimulation was negatively related with HOMA-IR in GDM group (r=-0.525, P<0.01). There was no correlation between the protein expression of InsR and HOMA-IR in GDM group (r=-0.236, P>0.05). It was suggested that there is no significant correlation between the protein expression of InsR in skeletal muscle and IR in GDM, but changes in TP of InsR are associated with IR in GDM.

It is a common understanding that turbidity and precipitation of traditional Chinese medicine are easy to occur in the process of decocting. At present, our research group found that the cause of "multi-phase of traditional Chinese medicine decoction" mainly came from the interaction between the effective components of traditional Chinese medicine, especially the interaction of acid and base components. For example, the Liquorice and Rhizoma chinensis was a supramolecular system formed by a large number of active components in the decoction (>30%), and could stably exist in the decoction system. In this study, the supramolecular part was extracted, and the morphology of the supramolecular part was characterized by scanning electron microscopy and dynamic light scattering. It was observed that the supramolecular particles were uniform in size and regular in shape. The main components of supramolecular sites were identified by liquid mass spectrometry (LC-MSⁿ). The results of UV and IR spectra showed that the chemical components of Liquorice and Rhizoma chinensis in the co-decocting process collided with each other, and weak bonds were formed between the functional groups of the molecules, which then induced the aggregation to form supramolecules. Thereafter, Through the diarrhea model of mice, sensory evaluation and antibacterial activity evaluation found that Liquorice and Rhizoma chinensis decocted together enhanced the antibacterial activity of Rhizoma, and compatibility "reconcile" Rhizoma "big bitter cold" property compared with single decoction group and interval administration group. All animal experiments were approved by the Animal Ethics Committee of Beijing University of Chinese Medicine, and the relevant regulations of Beijing University of Chinese Medicine on experimental animals were strictly followed. In this study, supramolecular chemistry method was used to preliminarily discuss the scientific connotation of "increasing efficiency and decreasing toxicity" of Liquorice and Rhizoma chinensis combined decoction from three perspectives of "property, efficacy and taste", and provide new ideas for the basic research of "reconcile" compatibility of Liquorice.

Adolescent ; Adult ; Age Distribution ; Child ; Child, Preschool ; Female ; Hepatitis A ; epidemiology ; virology ; Hepatitis A Virus, Human ; pathogenicity ; Hepatitis B ; epidemiology ; virology ; Hepatitis B virus ; pathogenicity ; Humans ; Infant ; Infant, Newborn ; Male ; Middle Aged ; Socioeconomic Factors ; Young Adult

Objective: To study the correlation between expression of oncogene C-MYC protein and gene abnormality in diffuse large B-cell lymphoma (DLBCL). Methods: The expression of C-MYC protein and gene abnormality were detected by immunohistochemistry and fluorescence in situ hybridization (FISH), respectively, in 42 cases of paraffin-embedded DLBCL. All cases were collected at Department of Pathology, Weifang People′s Hospital during January 2015 to October 2016. Results: The positive rate of C-MYC protein expression was 47.6% (20/42) and the rate of abnormal C-MYC gene by FISH was 26.2%(11/42), including translocation (23.8%, 10/42) and gene amplification (2.4%, 1/42). There was a close relationship between the protein expression and gene translocation (χ²=11.813; P=0.001) and gene translocation occurred primarily in GCB (χ²=4.029; P=0.045). Conclusion The high expression (≥40%) of C-MYC protein is associated with its gene translocation, suggesting that C-MYC protein detection can be used as a surrogate marker for C-MYC gene translocation in DLBCL.

Objective To investigate the effect of nutritional risk to nutritional status of peroperative elderly rectal cancer patients.Methods 85 elderly patients with rectal cancer were screened for preoperative nutritional status by NRS-2002 and divided into nutritional risk group and non-nutritional risk group.ALB,PALB,TLC and TFN of two groups were measured 1day before operation,1day and 7 days after operation.The values were compared between two groups.Results Before operation,25 patients out of 85 were at nutritional risk with NRS-2002≥3 and incidence of nutritional risk of 29.4％.The PALB value of the nutritional risk group was significantly lower than that of the non-nutritional risk group 1day after operation [(12.4±37)mg/L vs ( 14.3 ± 3.9 ) mg/L ;t =2.026,P＜0.05].After 7 days,the average levels of all indexes of the nutritional risk group were lower than those of the non-nutritional risk group.Among those,differences of ALB and TFN values between two groups were significant ( t =2.412,2.153,respectively; P ＜ 0.05 ).Conclusions Perioperative nutritional status of elderly rectal cancer patients at nutritional risk changes conspicuously and should be given relevant nutritional guidance by nurses.

Anaplasma phagocytophilum ; Anaplasmosis ; epidemiology ; Animals ; China ; epidemiology ; Dermacentor ; microbiology ; Humans ; Molecular Epidemiology

OBJECTIVETo study the relationship between ambient air pollution and daily mortality of SARS in Beijing.

METHODSThe approach of time-series Poisson regression was used to assess the relationship between daily SARS mortality, ambient air pollution, and other factors from April 25 to May 31, 2003 in Beijing.

RESULTSAn increase of each 10 microg/m3 over a 5-day moving average of PM10, SO2 and NO2 corresponded to 1.06 (1.00-1.12), 0.74 (0.48-1.13) and 1.22 (1.01-1.48) relative risks (RRs) of daily SARS mortality, respectively. The relative risks (RRs) values depended largely on the selection of lag days.

CONCLUSIONThe daily mortality of SARS might be associated with certain air pollutants in Beijing.

Air Pollutants ; adverse effects ; analysis ; toxicity ; Air Pollution ; adverse effects ; analysis ; China ; epidemiology ; Cities ; Dust ; analysis ; Environmental Monitoring ; Epidemiological Monitoring ; Humans ; Nitrogen Dioxide ; analysis ; Particle Size ; Retrospective Studies ; Risk ; Severe Acute Respiratory Syndrome ; epidemiology ; mortality ; Sulfur Dioxide ; analysis