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International Journal of Molecular Medicine

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https://www.readbyqxmd.com/read/29436613/rhein-protects-against-cerebral-ischemic%C3%A2-reperfusion%C3%A2-induced-oxidative-stress-and-apoptosis-in-rats
#1
Qipeng Zhao, Xiaobo Wang, Ailing Chen, Xiuli Cheng, Guoxin Zhang, Jianmin Sun, Yunsheng Zhao, Yu Huang, Yafei Zhu
The present study aimed to investigate the protective effects of rhein on cerebral ischemic/reperfusion (I/R) injury in rats. The present study focused on the effect of rhein on oxidative stress and apoptotic factors, which are considered to serve an important role in the onset of I/R injury. Sprague‑Dawley rats were subjected to middle cerebral artery occlusion. Neurological functional scores (NFSs) were evaluated according to the Zea Longa's score criteria and the area of brain infarct was determined by triphenyltetrazolium chloride staining...
February 13, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29436607/decreased-hyperpolarization-activated-cyclic-nucleotide-gated-channels-are-involved-in-bladder-dysfunction-associated-with-spinal-cord-injury
#2
Qian Liu, Chao Wu, Shengquan Huang, Qingjian Wu, Tao Zhou, Xiaobing Liu, Xin Liu, Xiaoyan Hu, Longkun Li
Spinal cord injury (SCI) leads to bereft voluntary control of bladder, but the possible role of spontaneous excited system in bladder of SCI patients is poorly understood. Hyper-polarization-activated cyclic nucleotide-gated (HCN) channels are deemed to regulate the spontaneous contraction of bladder, our study explored the functional role of HCN channels in SCI induced neurogenic bladder. Sixty female Sprague-Dawley rats were randomized into control, sham and SCI groups. Rat models subjected to SCI at S2 levels were successfully established and were assessed using hematoxylin and eosin staining and cystometry...
February 13, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29436604/cav-1-2-and-cav-2-2-expression-is-regulated-by-different-endogenous-ghrelin-levels-in-pancreatic-acinar-cells-during-acute-pancreatitis
#3
Jie Zhou, Mengbin Qin, Huilin Wang, Jiaping He, Hongzong Fu, Huirong Shi, Zhihai Liang, Guodu Tang
Ghrelin influences pancreatic endocrine and exocrine functions, regulates intracellular calcium [Ca2+]i levels, and has an anti-inflammatory role in acute pancreatitis. This study investigated the role of endogenous ghrelin in the expression of Cav 1.2 (L-type of Ca2+ channel) and Cav 2.2 (N-type of Ca2+ channel) in acute pancreatitis. For this purpose, acute edematous pancreatitis (AEP) and acute necrotizing pancreatitis (ANP) rat models were established. Cav 1.2 and Cav 2.2 expression was assessed by immunohistochemistry in the pancreatic tissues of rats; ghrelin, interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α) serum levels were detected using ELISA...
February 13, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29436629/cognitive-improvement-following-ischemia-reperfusion-injury-induced-by-voluntary-running%C3%A2-wheel-exercise-is-associated-with-lncmalat1%C3%A2-mediated-apoptosis-inhibition
#4
Jin-Lin Shang, Qing Cheng, Sheng-Jie Duan, Lu Li, Li-Ya Jia
Previous human and animal studies demonstrated that voluntary exercise may improve cognitive function and facilitate neuronal plasticity in ischemia/reperfusion (I/R) models. However, the possible underlying mechanisms remain to be elucidated. Metastasis‑associated lung adenocarcinoma transcript 1 (MALAT1), a long noncoding RNA (lncRNA), may be associated with the functions and dysfunctions of endothelial cells. The present study investigated whether spontaneous running‑wheel (RW) exercise‑induced MALAT1 expression changes may be associated with the cognitive improvement of mice following I/R injury...
February 12, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29436612/seawater-inhalation-induces-acute-lung-injury-via-ros-generation-and-the-endoplasmic-reticulum-stress-pathway
#5
Peng-Cheng Li, Bo-Rong Wang, Cong-Cong Li, Xi Lu, Wei-Sheng Qian, Yu-Juan Li, Fa-Guang Jin, De-Guang Mu
Seawater (SW) inhalation can induce acute lung injury (ALI) and acute respiratory distress syndrome (ARDS). In the present study, SW induced apoptosis of rat alveolar epithelial cells and histopathological alterations to lung tissue. Furthermore, SW administration increased generation of reactive oxygen species (ROS), whereas pretreatment with the ROS scavenger, N‑acetyl‑L‑cysteine (NAC), significantly decreased ROS generation, apoptosis and histopathological alterations. In addition, SW exposure upregulated the expression levels of glucose‑regulated protein 78 (GRP78) and CCAAT/enhancer binding protein homologous protein (CHOP), which are critical proteins in the endoplasmic reticulum (ER) stress response, thus indicating that SW may activate ER stress...
February 12, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29436608/microrna-expression-profiles-of-scar-and-normal-tissue-from-patients-with-posterior-urethral-stricture-caused-by-pelvic-fracture-urethral-distraction-defects
#6
Kaile Zhang, Jun Chen, Dongliang Zhang, Lin Wang, Weixin Zhao, David Yun-Te Lin, Rong Chen, Hong Xie, Xiaoyong Hu, Xiaolan Fang, Qiang Fu
Pelvic fracture urethral distraction defect (PFUDD) seriously affects the quality of life of patients. At present, there are few effective drug treatments available for PFUDD‑induced urethral stricture, which is associated with fibrosis and scar formation in urethra lumen. Emerging evidence suggests that microRNAs (miRNAs/miRs) may be involved in the regulation of fibrosis, and analysis of miRNA expression profiles in urethral scar and normal urethra tissues may therefore benefit the discovery of novel treatments for urethral stricture with micro invasive procedures...
February 12, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29436600/adenovirus-mediated-p311-ameliorates-renal-fibrosis-through-inhibition-of-epithelial-mesenchymal-transition-via-tgf-%C3%AE-1-smad-ilk-pathway-in-unilateral-ureteral-obstruction-rats
#7
Fang-Hua Qi, Ping-Ping Cai, Xiang Liu, Guo-Min Si
Epithelial-mesenchymal transition (EMT) is a critical step and key factor during renal fibrosis. Preventing renal tubular EMT is important for delaying the progression of chronic kidney disease (CKD). P311, a highly conserved 8-kDa intracellular protein, has been indicated as an important factor in myofibroblast transformation and in the progression of fibrosis. However, the related studies on P311 on renal fibrosis are limited and the mechanisms of P311 in the progression of renal tubulointerstitial fibrosis remain largely unknown...
February 12, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29436595/anti%C3%A2-apoptotic-effects-of-glycosaminoglycans-via-inhibition-of-erk-ap%C3%A2-1-signaling-in-tnf%C3%A2-%C3%AE-%C3%A2-stimulated-human-dermal-fibroblasts
#8
Jungtae Na, Dong-Ho Bak, Song I Im, Hyangtae Choi, Jung Hyun Hwang, Su Yeon Kong, Yeon A No, Yonghee Lee, Beom Joon Kim
It has been established that glycosaminoglycans (GAGs) serve an important role in protecting the skin against the effects of aging. A previous clinical trial by our group identified that a cream containing GAGs reduced wrinkles and increased skin elasticity, dermal density and skin tightening. However, the exact molecular mechanism underlying the anti‑aging effect of GAGs has not yet been fully elucidated. The present study assessed the influence of GAGs on cell viability, collagen synthesis and collagen synthesis‑associated signaling pathways in tumor necrosis factor‑α (TNF‑α)‑stimulated human dermal fibroblasts (HDFs); an in vitro model of aging...
February 12, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29436580/iron-limitation-promotes-the-atrophy-of-skeletal-myocytes-whereas-iron-supplementation-prevents-this-process-in-the-hypoxic-conditions
#9
Kamil Kobak, Monika Kasztura, Magdalena Dziegala, Jacek Bania, Violetta Kapuśniak, Waldemar Banasiak, Piotr Ponikowski, Ewa A Jankowska
There is clinical evidence that patients with heart failure and concomitant iron deficiency have increased skeletal muscle fatigability and impaired exercise tolerance. It was expected that a skeletal muscle cell line subjected to different degrees of iron availability and/or concomitant hypoxia would demonstrate changes in cell morphology and in the expression of atrophy markers. L6G8C5 rat skeletal myocytes were cultured in normoxia or hypoxia at optimal, reduced or increased iron concentrations. Experiments were performed to evaluate the iron content in cells, cell morphology, and the expression of muscle specific atrophy markers [Atrogin1 and muscle‑specific RING‑finger 1 (MuRF1)], a gene associated with the atrophy/hypertrophy balance [mothers against decapentaplegic homolog 4 (SMAD4)] and a muscle class‑III intermediate filament protein (Desmin) at the mRNA and protein level...
February 12, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29436577/rp105-protects-pc12-cells-from-oxygen%C3%A2-glucose-deprivation-reoxygenation-injury-via-activation-of-the-pi3k-akt-signaling-pathway
#10
Yanpeng Sun, Lu Liu, Jiang Yuan, Qiang Sun, Na Wang, Yunfu Wang
Radioprotective 105 kDa protein (RP105) has been reported to produce favorable outcomes in various cardiovascular disorders via a toll‑like receptor 4‑dependent or ‑independent manner. However, whether RP105 exerts neuroprotective effects against oxygen‑glucose deprivation (OGD)/reoxygenation (OGD/R) injury remains to be elucidated. In the present study, the PC12 neuronal cell line was exposed to 4 h of OGD followed by 24 h of reoxygenation. Adenoviral vectors encoding RP105 were utilized to upregulate the level of RP105 in PC12 cells prior to OGD/R induction...
February 12, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29436598/madecassoside-activates-anti%C3%A2-neuroinflammatory-mechanisms-by-inhibiting-lipopolysaccharide%C3%A2-induced-microglial-inflammation
#11
Andrew Octavian Sasmita, Anna Pick Kiong Ling, Kenny Gah Leong Voon, Rhun Yian Koh, Ying Pei Wong
Neurodegeneration is typically preceded by neuroinflammation generated by the nervous system to protect itself from tissue damage, however, excess neuroinflammation may inadvertently cause more harm to the surrounding tissues. Attenuating neuroinflammation with non‑steroidal anti‑inflammatory drugs can inhibit neurodegeneration. However, such treatments induce chronic side effects, including stomach ulcers. Madecassoside, a triterpene derived from Centella asiatica, is considered to be an alternative treatment of inflammation...
February 9, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29436597/the-interplay-of-bmp4-and-il%C3%A2-7-regulates-the-apoptosis-of-intestinal-intraepithelial-lymphocytes-under-conditions-of-ischemia%C3%AC-reperfusion
#12
Binyu Luo, Kang Chen, Qi Feng, Weidong Xiao, Dan Ma, Hua Yang, Chaojun Zhang
The number and function of intestinal intraepithelial lymphocytes (IELs) have been found to be significantly reduced following induction of acute intestinal mucosal damage via intestinal ischemia̸reperfusion (I̸R). However, the mechanism underlying this reduction remains unclear. Therefore, it was hypothesized that the interplay of bone morphogenetic protein (BMP)4 and interleukin (IL)‑7 regulates IEL function and number. Recent studies have demonstrated that the different components of the BMP2̸4 signaling pathway are expressed in intestinal epithelial cells (IECs) via the activation of nuclear factor (NF)‑κB...
February 9, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29436594/uvb-induces-apoptosis-via-downregulation-of-calml3-dependent-jnk1-2-and-erk1-2-pathways-in-cataract
#13
Yin Jia, Qin Qin, Chao-Ping Fang, Wei Shen, Ting-Ting Sun, Yuan-Lan Huang, Wen-Jie Li, An-Mei Deng
The aim of the current study was to understand the mechanisms of apoptosis occurring in cultured human lens epithelial cells (HLECs) following ultraviolet B (UVB) irradiation. The investigations intended to confirm the presence of apoptosis and to reveal the roles of oxidative stress, calcium (Ca2+), c‑Jun NH2‑terminal kinase (JNK)1/2, and extracellular signal‑regulated kinase (ERK)1/2 signaling pathway in these progresses. Cell apoptosis, ROS generation and intracellular Ca2+ concentration was measured by flow cytometry...
February 9, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29436606/lmo3-promotes-gastric-cancer-cell-invasion-and-proliferation-through-akt-mtor-and-akt-gsk3%C3%AE-signaling
#14
Yan-Song Qiu, Ning-Ning Jiang, Yan Zhou, Kuai-Yun Yu, Hong-Yan Gong, Guang-Jun Liao
The present study assessed the biological functions of LIM domain only 3 (LMO3) in gastric cancer (GC) investigated and the underlying molecular mechanisms. It was revealed that the expression of LMO3 was significantly upregulated in GC tissues. A GC tissue microarray (n=164) indicated that LMO3 expression was closely associated with clinicopathological factors, as well as overall survival and disease-free survival of patients. After knockdown of LMO3 in MGC-803 and SGC-7901 cells, the invasion and proliferation were obviously suppressed...
February 8, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29436603/%C3%AE-%C3%A2-lipoic-acid-can-greatly-alleviate-the-toxic-effect-of-ages-on-sh%C3%A2-sy5y-cells
#15
Guifen Niu, Jianfei Guo, Yaqiang Tian, Kexiang Zhao, Jian Li, Qian Xiao
The aim of the study was to explore the influence of α‑lipoic acid (α‑LA) on the cytotoxicity of advanced glycation end‑products (AGEs) against SH‑SY5Y cells. AGE‑bovine serum albumin (BSA) was incubated in vitro using SH‑SY5Y cells as a target model, and the control group was set. Cells were exposed to AGE‑BSA, and α‑LA was selectively added to the cells. Cell growth and death was determined by the MTT assay, which measures cellular metabolic rate, lactate dehydrogenase (LDH) leakage rate and cellular axonal length...
February 8, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29436602/the-expression-and-activation-of-sex-steroid-receptors-in-the-preeclamptic-placenta
#16
Mee-Na Park, Kyung-Hee Park, Jae-Eon Lee, Ye Young Shin, Sung-Min An, Seong Soo Kang, Wan-Seob Cho, Beum-Soo An, Seung Chul Kim
Estrogen and progesterone are the main pregnancy hormones produced by the placenta. It is well understood that estrogen stimulates angiogenesis in the uterus during the reproductive cycle. Although the estrogen and progesterone signaling pathways are assumed to be associated with placental vascularization and preeclampsia, expression of estrogen receptors (ESRs) and progesterone receptor (PGR) in the placenta have not been well studied. The present study examined the expression patterns of steroid hormone receptors in placentas...
February 8, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29436592/concomitant-modulation-of-pten-and-livin-in-gastric-cancer-treatment
#17
Chun-Lin Zhao, Sheng-Na Han, Zhi-Ju Wang, Shu-Hui Wang, Guo-Qiang Zhao, Xie-Fu Zhang, Jia-Xiang Wang
Phosphatase and tensin homolog deleted on chromosome 10 (PTEN) and Livin are important in the development of gastric cancer (GC). PTEN and Livin are involved in the regulation of tumor cell proliferation, migration and apoptosis. The modulation of PTEN or Livin has been investigated extensively in various cancer models. However, no studies have been performed to evaluate the combined effect of concurrently modulating these two genes on the development of GC. In the present study, the BGC823 human gastric carcinoma cell line was transfected with a dual gene modified vector (pCL-neo-PTEN-siLivin) in parallel with single gene modified vectors (pCL‑neo‑PTEN or pRNAT‑U6...
February 8, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29436605/novel-iridium-iii-%C3%A2-derived-organometallic-compound-for-the-inhibition-of-human-platelet-activation
#18
Kou-Gi Shyu, Marappan Velusamy, Chih-Wei Hsia, Chih-Hao Yang, Chih-Hsuan Hsia, Duen-Suey Chou, Thanasekaran Jayakumar, Joen-Rong Sheu, Jiun-Yi Li
Since cisplatin achieved clinical success, transition metal platinum (Pt) drugs have been effectively used for the treatment of cancer. Iridium (Ir) compounds are considered to be potential alternatives to Pt compounds, as they possess promising anticancer effects with minor side effects. Platelet activation is associated with the metastasis and progression of cancer, and also with arterial thrombosis. Therefore, it is necessary to develop novel, effective antithrombotic agents. An Ir (III)‑derived complex, [Ir (Cp*) 1‑(2‑pyridyl)‑3‑(3‑methoxyphenyl)imidazo[1,5‑a]pyridine Cl]BF4 (Ir‑3), was developed as a novel antiplatelet drug...
February 7, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29436601/changed-immune-and-mirna-response-in-raw264-7-cells-infected-with-cell-wall-deficient-mycobacterium-tuberculosis
#19
Zhengjun Yi, Kunshan Gao, Ruifang Li, Yurong Fu
Cell wall deficient (CWD) forms of Mycobacterium tuberculosis (Mtb) confers a marked resistance to immune system of the host. However, there is limit data on the effect of intracellular CWD-Mtb infection on macrophages. In the study, effects of CWD-Mtb on cell viability, cytokine response and miRNA expression of macrophages were analyzed. Cell viability was reduced, levels of interleukin-1α (IL-1α), IL-1β, IL-6, IL-10 and interferon-γ (IFN-γ) were also significantly changed after infection of RAW264.7 cells with CWD-Mtb...
February 7, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29436599/experimental-study-on-the-neurotoxic-effect-of-%C3%AE-amyloid-on-the-cytoskeleton-of-pc12-cells
#20
Lai Wang, Jingjing Cao, Zhenyu Shi, Wenjuan Fan, Hongliang Liu, Jinbo Deng, Jiexin Deng
The aim of the present study was to establish a cell model of Alzheimer's disease (AD) and investigate the neurotoxic effects of β-amyloid (Aβ) on the cytoskeleton. PC12 cells were cultured and treated with Aβ25‑35, and cell survival was analyzed with the MTT assay. Cell apoptosis was visualized using 4',6-diamidino-2-phenylindole staining and the terminal deoxynucleotidyl transferase dUTP nick-end labeling assay. Immunocytochemistry and phalloidin staining were used to label the cytoskeleton of PC12 cells...
February 7, 2018: International Journal of Molecular Medicine
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