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https://www.readbyqxmd.com/read/28633597/effect-of-t-2-toxin-injected-shrimp-muscle-extracts-on-mouse-macrophage-cells-raw264-7
#1
Zhanrui Huang, Yaling Wang, Mei Qiu, Lijun Sun, Jianmeng Liao, Rundong Wang, Xiaodong Sun, Siyuan Bi, Ravi Gooneratne
Following intramuscular injections of 0.1 mL, 3 mg kg(-1 )BW(-1)(1/10 LD50) T-2 toxin (T-2), the tissue concentration of T-2 in shrimp was quantitatively detected using LC-MS/MS. The biological half-time (t1/2) of T-2 in blood was 40.47 ± 0.24 min. The highest number of intramuscular T-2 shrimp could tolerate when given at blood t1/2 intervals was 4. The shrimps which were injected 5 T-2 died. The T-2 toxin highest accumulation was 0.471 ± 0.012 ng g(-1 )BW(-1). The effect of toxic shrimp muscle subjected to different processing conditions (high pressure, trifluoroacetic acid, acid and alkali digestions, artificial digestive juice [to simulate exposure to gastric and intestinal juices]) on mouse macrophage cells (RAW267...
February 10, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28631076/effects-of-glycyrrhizic-acid-on-the-pharmacokinetics-of-pristimerin-in-rats-and-its-potential-mechanism
#2
Xiufen Zhao, Yan Wu, Dongmei Wang
BACKGROUND AND OBJECTIVES: Pristimerin has been reported to possess a wide range of pharmacological activities. This study investigates the effects of glycyrrhizic acid on the pharmacokinetics of pristimerin in rats. METHODS: The pharmacokinetics of orally administered pristimerin (2 mg/kg) with or without glycyrrhizic acid pretreatment (at a dose of 100 mg/kg/day for 7 days) were investigated. The plasma concentration of pristimerin was determined using a sensitive and reliable LC-MS/MS method, and the pharmacokinetics profiles were calculated and compared...
June 19, 2017: European Journal of Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/28630656/physical-activity-black-carbon-exposure-and-dna-methylation-in-the-foxp3-promoter
#3
Stephanie Lovinsky-Desir, Kyung Hwa Jung, Jacqueline R Jezioro, David Z Torrone, Mariangels de Planell-Saguer, Beizhan Yan, Frederica P Perera, Andrew G Rundle, Matthew S Perzanowski, Steven N Chillrud, Rachel L Miller
BACKGROUND: Physical activity is associated with improvement in lung function; however, pollution exposure during physical activity can lead to a transient reduction in lung function. This paradoxical relationship may be linked to altered T regulatory (Treg) cell activity, which increases with exercise and suppresses airway inflammation, but decreases in association with exposure to air pollution. To clarify these relationships, we investigated buccal cell DNA methylation of the forkhead box p3 (FOXP3) gene promoter, a proposed biomarker of Treg activity...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/28630386/low-17%C3%AE-estradiol-levels-are-better-inducers-of-regulatory-conditioned-t-cells-in-vitro
#4
Ramina Fatemi, Ebrahim Mirzadegan, Zohreh Vahedian, Amir Hassan Zarnani, Mahmood Jeddi-Tehrani, Farah Idali
BACKGROUND: 17β-estradiol (E2) has been known to modulate immune response. Recent studies indicate that E2 at pregnancy level plays a role in regulating T cell response. OBJECTIVE: To investigate the optimum dose of E2 (from 10-9 to 10-7 M) in mediating the generation of regulatory T cells (Tregs), using naive human CD4+ T cells from healthy women. METHODS: Naive peripheral T cells were purified and conditioned with soluble anti-CD28 in anti-CD3-coated plates in the presence or absence of E2...
June 2017: Iranian Journal of Immunology: IJI
https://www.readbyqxmd.com/read/28627700/isolation-of-rat-schwann-cells-based-on-cell-sorting
#5
Mi Shen, Wei Tang, Zheng Cao, Xuemin Cao, Fei Ding
The present study presented a protocol that can be used to obtain rapidly a high purity of proliferating rat Schwann cells from freshly dissociated rat peripheral nerves. The sciatic nerves of newborn rats (1‑3 day old) were dissociated, and the Schwann cells (SCs) were purified using fluorescence‑activated cell sorting (FACS) based on the SC membrane‑specific expression of the low‑affinity nerve growth factor receptor, p75NGFR and oligodendrocyte marker 4. Following sorting, the cells were plated on poly‑l‑lysine‑coated dishes in SC culture medium containing DMEM with 10% FBS, 1% penicillin/streptomycin, 2 µM forskolin and 10 ng/ml HRG...
June 14, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28627346/-study-on-rac1-mapk-erk-pathway-mediated-mechanism-and-role-in-rats-with-ventilator-induced-lung-injury
#6
Guanghua Tao, Linghui Pan, Ren Jing, Fei Lin, Huijun Dai, Wanyun Ge
OBJECTIVE: To investigate the role of Ras-related C3 botulinum toxin substrate 1/mitogen-activated protein kinase/extracellular signal-regulated kinase (Rac1/MAPK/ERK) signal pathway in rats with ventilator induced lung injury (VILI) and its mechanism. METHODS: Thirty Sprague-Dawley (SD) rats were randomly divided into spontaneous respiration group, normal tidal volume (VT) group and high VT group with 10 rats in each group. The rats in spontaneous respiration group were kept their spontaneous breathing...
March 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28627342/-baicalein-attenuates-acute-lung-injury-induced-by-intestinal-ischemia-reperfusion-via-inhibition-of-nuclear-factor-%C3%AE%C2%BAb-pathway-in-mice
#7
Lei Chu, Fenyong Zhu, Wenjun Zhou, Zhongxiang Du, Jie Li, Xiaohong Wang, Lihui Wang, Anding Liu
OBJECTIVE: To investigate the effects of baicalein (Bai) on acute lung injury (ALI) induced by intestinal ischemia/reperfusion (I/R) and its mechanism in mice. METHODS: Twenty-four male C57BL/6J mice were divided into three groups by random number table: namely sham group, I/R group and Bai+I/R group, with 8 mice in each group. Intestinal I/R induced lung injury model was reproduced by clamping superior mesenteric artery for 90 minutes, followed by reperfusion. Bai (100 mg/kg) was intraperitoneally injected 1 hour before ischemic challenge in the Bai+I/R group...
March 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28626164/diagnostic-significance-of-measuring-vascular-endothelial-growth-factor-for-the-differentiation-between-malignant-and-tuberculous-pleural-effusion
#8
Hak-Ryul Kim, Byoung-Ryun Kim, Rae-Kil Park, Kwon-Ha Yoon, Eun-Taik Jeong, Ki-Eun Hwang
Malignancy and tuberculosis are common causes of lymphocytic exudative pleural effusion. However, it is occasionally difficult to differentiate malignant pleural effusion from tuberculous pleural effusion. Vascular endothelial growth factor (VEGF) is a critical cytokine in the pathogenesis of malignant pleural effusion. Endocan is a dermatan sulfate proteoglycan that is secreted by endothelial cells. Importantly, endocan mediates the vascular growth-promoting action of VEGF. The aim of this study was to evaluate the diagnostic significance of VEGF and endocan in pleural effusion...
2017: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28626131/homozygous-duoxa2-mutation-p-tyr138-in-a-girl-with-congenital-hypothyroidism-and-her-apparently-unaffected-brother-case-report-and-review-of-the-literature
#9
Chiho Sugisawa, Shinji Higuchi, Masaki Takagi, Yukihiro Hasegawa, Matsuo Taniyama, Kiyomi Abe, Tomonobu Hasegawa, Satoshi Narumi
Mutations in DUOXA2, encoding dual oxidase maturation factor 2, is a rare genetic cause of congenital hypothyroidism. Only four biallelic DUOXA2 mutation carriers have been described to date. This study was conducted to report the clinical and genetic findings of a DUOXA2 mutation-carrying family, and to review the previously reported cases. The proband was a 4-year-old girl, who was diagnosed as having congenital hypothyroidism in the frame of newborn screening. She had a high serum TSH level (138 mU/L) and a low free T4 level (0...
June 16, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/28625265/-protective-effect-of-curcumin-on-hepatocytes-in-rats-with-sepsis
#10
Haiyan Yin, Minshan Qiu, Dan He, Rui Zhang, Pei Tao, Yanwen Liang, Yuegui Yang, Yanqi Guo, Xiaoling Ye
OBJECTIVE: To investigate the protective effect of curcumin on hepatocytes in rats with sepsis. METHODS: Eighty healthy male Sprague-Dawley (SD) rats were randomly divided into sham operation group, sepsis group, Xuebijing group and curcumin group (20 rats in each group) according to the random number table method. The animal model of sepsis was established by cecal ligation and puncture (CLP). In the sham operation group, the cecum was removed only after the operation...
February 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28625263/-bacterial-endotoxin-induced-endothelial-cell-injury-and-calcium-overload-associated-with-toll-like-receptor-and-calcium-signal
#11
Jianguo Xiao, Qing Song, Tanshi Li, Rongju Sun
OBJECTIVE: To explore the effect of toll-like receptor 4 (TLR4), myeloid differentiation protein-2 (MD2), and stromal interaction molecular 1 (STIM1) for regulating human vascular endothelial calcium overload injury and inflammatory reaction induced by bacterial endotoxin (LPS). METHODS: Human umbilical vein endothelial cells (HUVECs) were cultured in Dulbecco's modification of Eagle's medium (DMEM). (1) The levels of TLR4, MD2 and nuclear factor-κB (NF-κB) were detected by reverse transcriotion-polymerase chain reaction (RT-PCR) before and 0...
February 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28625242/-clinical-significance-of-combined-detection-of-peripheral-mir-182-and-il-17-in-the-early-diagnosis-of-patients-with-eclampsia-complicated-with-cerebral-infarction-in-icu
#12
Lina Zhang, Tiejun Wu, Dawei Wu, Yanjun Liu, Min Bai, Shuangfeng Chen
OBJECTIVE: To observe the effect of peripheral blood microRNA-182 (miR-182) combined with interleukin-17 (IL-17) in the early diagnosis of cerebral infarction (CI) in patients with eclampsia. METHODS: A prospective non-randomized controlled study was conducted. The patients with eclampsia admitted to intensive care unit (ICU) of Liaocheng People's Hospital from January 1st, 2013 to September 30th 2016 were enrolled. Cerebral imaging was conducted in 7 days after admission to make a definite diagnosis of the occurrence of CI, excluding patients with cerebral hemorrhage...
June 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28625237/-study-on-mechanisms-and-myocardial-protective-effect-of-qishen-yiqi-dropping-pills-on-rats-with-myocardial-infarction
#13
Quan Yang, Yunshan Cao
OBJECTIVE: To approach the mechanisms and myocardial protective effect of Qishen Yiqi dropping pills on rats with myocardial infarction. METHODS: Sixty clean healthy male Sprague-Dawley (SD) rats were randomly divided into sham operation group, model group and observation group (each n = 20). The rat model of acute myocardial infarction (AMI) was established by ligation of left anterior descent (LAD) branch of coronary artery. After modeling, the rats in observation group were given 0...
June 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28624734/indirect-influence-of-eutrophication-on-air-water-exchange-fluxes-sinking-fluxes-and-occurrence-of-polycyclic-aromatic-hydrocarbons
#14
Yuqiang Tao, Jing Yu, Guoliang Lei, Bin Xue, Fengju Zhang, Shuchun Yao
How eutrophication affects biogeochemical processes of hydrophobic organic contaminants (HOCs) in aquatic environments is a pending challenge. Although the direct influence of eutrophication on biogeochemical processes of HOCs in waters has been well addressed, the indirect influence of eutrophication on biogeochemical processes of HOCs remains largely unknown. Here we take the large shallow eutrophic Lake Taihu in China and polycyclic aromatic hydrocarbons (PAHs) as examples to provide novel knowledge on the indirect influence of eutrophication on air - water exchange fluxes, sinking fluxes, and occurrence of HOCs...
June 10, 2017: Water Research
https://www.readbyqxmd.com/read/28622367/role-of-serum-ferritin-level-on-overall-survival-in-patients-with-myelodysplastic-syndromes-results-of-a-meta-analysis-of-observational-studies
#15
Claudia Pileggi, Maddalena Di Sanzo, Valentina Mascaro, Maria Grazia Marafioti, Francesco Saverio Costanzo, Maria Pavia
BACKGROUND: The role of serum ferritin (SF) as a prognostic factor has been analyzed in patients with myelodysplastic syndromes (MDS) who have undergone hematopoietic stem cell transplantation (HSCT), but the prognostic role of elevated SF levels is still controversial in lower risk MDS patients. Therefore, we performed a meta-analysis of all available published literature to evaluate whether elevated SF levels are associated with a worse overall survival (OS) among patients with low risk MDS...
2017: PloS One
https://www.readbyqxmd.com/read/28620819/cellular-growth-and-tube-formation-of-htr8-svneo-trophoblast-effects-of-exogenously-added-fatty-acid-binding-protein-4-and-its-inhibitor
#16
Sanjay Basak, Arnab Sarkar, Santosh Mathapati, Asim K Duttaroy
Adequate placental angiogenesis is critical for the establishment of the placental circulation and thus for normal feto-placental growth and development. Fatty acid-binding protein-4 (FABP4) plays a pro-angiogenic role in endothelial cells; however, very little information is available in placental first trimester trophoblast cells. Here we report that exogenously added FABP4 (exo-FABP4) stimulated tube formation (as a measure of in vitro angiogenesis) in HTR8/SVneo trophoblastic cells. HTR-8/SVneo cells were incubated in the presence of exogenously added FABP4 at different concentrations and time points...
June 15, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28619001/icariin-attenuates-interleukin-1%C3%AE-induced-inflammatory-response-in-human-nucleus-pulposus-cells
#17
Wen-Bin Hua, Yu-Kun Zhang, Xing-Huo Wu, Liang Kang, Ji Tu, Kang-Cheng Zhao, Shuai Li, Kun Wang, Yu Song, Rong-Jin Luo, Zeng-Wu Shao, Cao Yang
BACKGROUND: Low back pain is a common problem, mainly caused by intervertebral disc degeneration (IDD). An important pathophysiological characteristic of IDD is the loss of homeostatic balance of the extracellular matrix metabolism. Interleukin-1β (IL-1β) is one of the inflammatory mediators stimulating the degradation of extracellular matrix in the nucleus pulposus (NP) and contributing to IDD pathogenesis. Icariin, which is isolated from Epimedium brevicornum, acts as an anti-inflammatory drug...
June 15, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28617536/effects-of-mulberry-leaf-polysaccharide-on-oxidative-stress-in-pancreatic-%C3%AE-cells-of-type-2-diabetic-rats
#18
C-G Liu, Y-P Ma, X-J Zhang
OBJECTIVE: To explore and discuss the effects and mechanisms of mulberry leaf polysaccharide (MLP) on oxidative stress in pancreatic β-cells of type 2 diabetic rats. MATERIALS AND METHODS: The model of diabetic rats was established by inducing the Sprague-Dawley (SD) rats with high-sugar and high-fat diet for 6 weeks and then giving them streptozotocin (STZ) by single intraperitoneal injection. The mulberry leaf polysaccharide was administered via gavage daily for 8 weeks, and the tissue morphology was observed through electron microscopy...
May 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28616913/-the-effect-of-exogenous-recombinant-hmgb1-on-neural-stem-cells-and-related-mechanism
#19
Hui-Min Zhang, Bo Wu, Tian Cao, Yu-Ying Yan, Ming Liu
OBJECTIVES: To explore the effect of exogenous recombinant high mobility group protein box1 (rHMGB1) on proliferation and differentiation of neural stem cells (NSCs) and the related mechanism. METHODS: SD rat cerebral cortex cells were cultured in serum-free medium, extending the culture and purification of neural stem cells. NSCs were identified by detecting nestin-label with immunofluorescence method.The NSCs proliferation activity after adding different concentrations of rHMGB1 was determined by CCK-8 assay and the optimal concentration of rHMGB1 for the follow-up experiments was selected...
May 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28614959/the-effects-of-triptolide-on-the-pharmacokinetics-of-sorafenib-in-rats-and-its-potential-mechanism
#20
Xianming Wang, Xin Zhang, Fei Liu, Minghai Wang, Shiyong Qin
CONTEXT: Combining sorafenib with triptolide could inhibit tumour growth with greater efficacy than single-agent treatment. However, their herb-drug interaction remains unknown. OBJECTIVE: This study investigates the herb-drug interaction between triptolide and sorafenib. MATERIALS AND METHODS: The effects of triptolide (10 mg/kg) on the pharmacokinetics of different doses of sorafenib (20, 50 and 100 mg/kg) in rats, and blood samples were collected within 48 h and evaluated using LC-MS/MS...
December 2017: Pharmaceutical Biology
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