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Cell Biochemistry and Function

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https://www.readbyqxmd.com/read/28052355/mitochondrial-ryanodine-sensitive-ca-2-channels-of-rat-liver
#1
N I Kupynyak, O V Ikkert, S G Shlykov, L G Babich, V V Manko
To examine ryanodine-sensitive Ca(2+) channels in mitochondria of rat hepatocytes and their role in energy state of the cells via investigation of the ryanodine effect on mitochondrial membrane potential. Oxygen consumption was measured by polarography using the Clark electrode. The substrates of oxidation such as pyruvate (5mM), α-ketoglutarate (5mM), or succinate (5mM) were used. Oxidative phosphorylation was stimulated by the addition of adenosine diphosphate (200nM). Mitochondrial membrane potential was measured using a voltage-sensitive fluorescent probe tetramethylrhodamine-methyl-ester (0...
January 3, 2017: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/28052347/apoptotic-effects-of-bovine-apo-lactoferrin-on-hela-tumor-cells
#2
Carla Luzi, Fabrizia Brisdelli, Roberto Iorio, Argante Bozzi, Veronica Carnicelli, Antonio Di Giulio, Anna Rita Lizzi
Lactoferrin (Lf), a cationic iron-binding glycoprotein of 80 kDa present in body secretions, is known as a compound with marked antimicrobial activity. In the present study, the apoptotic effect of iron-free bovine lactoferrin (apo-bLf) on human epithelial cancer (HeLa) cells was examined in association with reactive oxygen species and glutathione (GSH) levels. Apoptotic effect of iron-free bovine lactoferrin inhibited the growth of HeLa cells after 48 hours of treatment while the diferric-bLf was ineffective in the concentration range tested (from 1 to 12...
January 3, 2017: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/28083967/strain-uses-gap-junctions-to-reverse-stimulation-of-osteoblast-proliferation-by-osteocytes
#3
Rosemary F L Suswillo, Behzad Javaheri, Simon C F Rawlinson, Gary P Dowthwaite, Lance E Lanyon, Andrew A Pitsillides
Identifying mechanisms by which cells of the osteoblastic lineage communicate in vivo is complicated by the mineralised matrix that encases osteocytes, and thus, vital mechanoadaptive processes used to achieve load-bearing integrity remain unresolved. We have used the coculture of immunomagnetically purified osteocytes and primary osteoblasts from both embryonic chick long bone and calvariae to examine these mechanisms. We exploited the fact that purified osteocytes are postmitotic to examine both their effect on proliferation of primary osteoblasts and the role of gap junctions in such communication...
January 2017: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/28083966/small-animal-models-to-understand-pathogenesis-of-osteoarthritis-and-use-of-stem-cell-in-cartilage-regeneration
#4
REVIEW
Virginia Piombo
Osteoarthritis (OA) is one of the most common diseases, which affect the correct functionality of synovial joints and is characterized by articular cartilage degradation. Limitation in the treatment of OA is mostly due to the very limited regenerative characteristic of articular cartilage once is damaged. Small animal models are of particular importance for mechanistic analysis to understand the processes that affect cartilage degradation. Combination of joint injury techniques with the use of stem cells has been shown to be an important tool for understanding the processes of cartilage degradation and regeneration...
January 2017: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/28083965/mechanistic-insight-into-nuclear-receptor-mediated-regulation-of-bile-acid-metabolism-and-lipid-homeostasis-by-grape-seed-procyanidin-extract-gspe
#5
REVIEW
Laura E Downing, Daniel Edgar, Patricia A Ellison, Marie-Louise Ricketts
Dietary procyanidins have emerged as important bioactive components that regulate various metabolic pathways to maintain homeostasis. Grape seed procyanidin extract (GSPE), in particular, has demonstrated regulatory effects on bile acid and lipid metabolism in vivo. While numerous studies in rodent models have shown the potent hypolipidemic action of grape seed extracts, human studies have shown inconsistent results. This review will focus on the molecular mechanisms underlying the hypolipidemic actions of GSPE identified to date, specifically highlighting the effects exerted via nuclear receptors...
January 2017: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/28083964/stimulation-of-neurotrophic-factors-and-inhibition-of-proinflammatory-cytokines-by-exogenous-application-of-triiodothyronine-in-the-rat-model-of-ischemic-stroke
#6
Fatemeh Sabbaghziarani, Keywan Mortezaee, Mohammad Akbari, Iraj Ragerdi Kashani, Mansooreh Soleimani, Gholamreza Hassanzadeh, Adib Zendedel
There is a positive relation between decreases of triiodothyronine (T3) amounts and severity of stroke. The aim of this study was to evaluate the effect of exogenous T3 application on levels of neurogenesis markers in the subventricular zone. Cerebral ischemia was induced by middle cerebral artery occlusion in male Wistar rats. There were 4 experimental groups: sham, ischemic, vehicle, and treatment. Rats were injected with T3 (25 μg/kg, IV injection) at 24 hours after ischemia. Animals were sacrificed at day 7 after ischemia...
January 2017: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/27935137/regulation-mechanism-of-pdk1-on-macrophage-metabolism-and-function
#7
REVIEW
Yueqin Yang, Weiwei Kong, Zhi Xia, Lin Xiao, Song Wang
PDK1 is a member of the atypical glandular cell kinases family that regulates the activities of most atypical glandular cell kinases during different development stages and treatment of cancers. PDK1 is also a critical glucose metabolism enzyme regulating glucolysis or glucose oxidase in cells, and more research is needed to further understand the underlying mechanism. The research of PDK1 presented by recent studies focuses much on cancer treatment and has helped researchers gain much insight in this regard...
December 2016: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/27935136/a-possible-s-glutathionylation-of-specific-proteins-by-glyoxalase-ii-an-in-vitro-and-in-silico-study
#8
Luisa Ercolani, Andrea Scirè, Roberta Galeazzi, Luca Massaccesi, Laura Cianfruglia, Adolfo Amici, Francesco Piva, Lorena Urbanelli, Carla Emiliani, Giovanni Principato, Tatiana Armeni
: Glyoxalase II, the second of 2 enzymes in the glyoxalase system, is a hydroxyacylglutathione hydrolase that catalyses the hydrolysis of S-d-lactoylglutathione to form d-lactic acid and glutathione, which is released from the active site. The tripeptide glutathione is the major sulfhydryl antioxidant and has been shown to control several functions, including S-glutathionylation of proteins. S-Glutathionylation is a way for the cells to store reduced glutathione during oxidative stress, or to protect protein thiol groups from irreversible oxidation, and few enzymes involved in protein S-glutathionylation have been found to date...
December 2016: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/27935135/micro-rna-550a-interferes-with-vitamin-d-metabolism-in-peripheral-b-cells-of-patients-with-diabetes
#9
Jinggui He, Xiyun Guo, Zhi-Qiang Liu, Ping-Chang Yang, Shaobo Yang
The pathogenesis of diabetes is to be further investigated. Vitamin D3 (VitD3) can improve diabetes. Micro RNAs (miR) are involved in regulating cell activities. This study tests a hypothesis that miR-550a interferes with the metabolism of VitD3 in peripheral B cells. In this study, blood samples were collected from patients with diabetes and healthy persons. The B cells were isolated from the blood samples to be treated with tumor necrosis factor (TNF)-α. The B cells were then collected and analyzed for the expression of miR-550a and cyp27b1...
December 2016: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/27935134/strain-and-time-dependent-alterations-in-hepatic-iron-metabolism-in-a-murine-model-of-nonalcoholic-steatohepatitis
#10
Steven A Bloomer, Alicia K Olivier, Ottar M Bergmann, M Meleah Mathahs, Kimberly A Broadhurst, Hasan Hicsasmaz, Kyle E Brown
: Nonalcoholic steatohepatitis is a common liver disease that is often accompanied by dysregulated iron metabolism. The aim of the study was to test the hypothesis that aberrant iron metabolism in nonalcoholic steatohepatitis is modulated by genetic susceptibility to inflammation and oxidative stress. Hepatic histology and iron content were assessed in 3 inbred strains of mice (C57BL/6, BALB/c, and C3H/HeJ) fed an atherogenic diet (AD). Hepatic expression of genes relevant to iron metabolism, inflammation, and oxidative stress were quantitated by real-time reverse transcription-polymerase chain reaction...
December 2016: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/27935133/modulation-of-brown-adipocyte-activity-by-milk-by-products-stimulation-of-brown-adipogenesis-by-buttermilk
#11
Hiroki Asano, Ryosuke Kida, Kengo Muto, Takayuki Y Nara, Ken Kato, Osamu Hashimoto, Teruo Kawada, Tohru Matsui, Masayuki Funaba
Brown adipocytes dissipate chemical energy in the form of heat through the expression of mitochondrial uncoupling protein 1 (Ucp1); Ucp1 expression is further upregulated by the stimulation of β-adrenergic receptors in brown adipocytes. An increase in energy expenditure by activated brown adipocytes potentially contributes to the prevention of or therapeutics for obesity. The present study examined the effects of milk by-products, buttermilk and butter oil, on brown adipogenesis and the function of brown adipocytes...
December 2016: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/27862077/microrna-383-is-a-tumor-suppressor-in-human-lung-cancer-by-targeting-endothelial-pas-domain-containing-protein-1
#12
Hongjing Ma, Bin Liu, Shuoying Wang, Jing Liu
: Lung cancer is the deadliest of all human cancers worldwide. The role of microRNA (miR)-383 has been controversial in the initiation and progression of different cancers. We aimed to investigate the function of miR-383 in human lung cancer both in vitro and in vivo. MicroRNA-383 levels were analyzed in noncancerous versus cancerous human lung tissues and in normal versus lung cancer cell lines. Effect of miR-383 on cell migration and invasion was examined in vitro and on tumor growth by using a xenograft mouse model in vivo...
December 2016: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/27862073/n-methyl-n-nitrosourea-induces-retinal-degeneration-in-the-rat-via-the-inhibition-of-nf-%C3%AE%C2%BAb-activation
#13
Yu Xiong, Hong-Pei Ji, Wei-Tao Song, Ye-Wei Yin, Chao-Hua Xia, Bei Xu, Yi Xu, Xiao-Bo Xia
Retinitis pigmentosa (RP) is a group of inherited neurodegenerative diseases characterized by the loss of photoreceptor cells through apoptosis. N-methyl-N-nitrosourea (MNU) is an alkylating toxicant that induces photoreceptor cell death resembling hereditary RP. This study aimed to investigate the role of nuclear factor κB (NF-κB) in MNU-induced photoreceptor degeneration. Adult rats received a single intraperitoneal injection of MNU (60 mg/kg bodyweight). Hematoxylin and eosin staining demonstrated progressive outer nuclear layer (ONL) loss after MNU treatment...
December 2016: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/27862063/comparative-expression-analysis-of-hypoxia-inducible-factor-alpha-and-its-natural-occurring-antisense-in-breast-cancer-tissues-and-adjacent-noncancerous-tissues
#14
Behnoosh Tasharrofi, Mohammad Soudyab, Elahe Nikpayam, Mostafa Iranpour, Reza Mirfakhraie, Shaghayegh Sarrafzadeh, Lobat Geranpayeh, Eznollah Azargashb, Arezou Sayad, Soudeh Ghafouri-Fard
Hypoxia-inducible factors (HIFs) have been shown to be upregulated in tumor tissues and linked with tumor progression and metastasis in breast cancer. Among regulatory mechanisms for HIF expression is a natural occurring antisense named aHIF, which has been shown to be overexpressed in breast cancer and influence the level of the HIF-1α transcript. In the present study, we analyzed the expression of HIF-1α and aHIF in breast cancer tissues versus adjacent noncancer tissues (ANCTs) in relation with the clinical and biological behavior of the tumors...
December 2016: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/27862060/effect-of-bafilomycin-and-naadp-on-membrane-associated-atpases-and-respiration-of-isolated-mitochondria-of-the-murine-nemeth-kellner-lymphoma
#15
V Hreniukh, S Bychkova, O Kulachkovsky, A Babsky
: The goal of the study was to estimate the effect of a selective V-type H(+) -ATPase inhibitor bafilomycin A1 and nicotinic acid adenine dinucleotide phosphate (NAADP) on energetic processes in NK/Ly cell by directly measuring the respiration of isolated mitochondria and ATPase activities. NAADP (7 μM) increased the activity of Na(+) /K(+) -ATPase in the postmitochondrial fraction of NK/Ly cells, but lower concentration of NAADP decreased it (0.1 and 1 μM). The increase the activity of plasma membrane Ca(2)(+) ATPase (PMCA) under NAADP application (1 and 7 μM) was observed...
December 2016: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/27859461/gene-expression-profiles-of-human-subcutaneous-and-visceral-adipose-derived-stem-cells
#16
Boyun Kim, Boram Lee, Mi-Kyung Kim, Seung Pyo Gong, Noh Hyun Park, Hyun Hoon Chung, Hee Seung Kim, Jae Hong No, Woong Yang Park, Ae Kyung Park, Jeong Mook Lim, Yong Sang Song
Subcutaneous and visceral adipose tissues show a different risk effect on metabolic disorders because they have distinct cellular properties. We isolated stem cells from the separate human adipose tissues to investigate that subcutaneous and visceral fat depots have metabolic differences. Adipose-derived stem cells (ASCs) were characterized by immunophenotype and differentiation potentials into adipogenic, osteogenic, and chondrogenic lineages. Although subcutaneous and visceral ASCs (S-ASC and V-ASC) express same surface markers (CD31(-) , CD34(-) , CD45(-) , CD73(+) , CD90(+) , and CD105(+) ) and have differentiation potentials, S-ASCs had higher capacity to proliferate and to differentiate into adipogenic lineage than V-ASCs...
December 2016: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/27859423/from-obesity-to-cancer-a-review-on-proposed-mechanisms
#17
REVIEW
Zoya Tahergorabi, Majid Khazaei, Mitra Moodi, Elham Chamani
Nowadays, obesity is considered as a serious and growing global health problem. It is documented that the overweight and obesity are major risk factors for a series of noncommunicable diseases, and in recent years, the obesity-cancer link has received much attention. Numerous epidemiological studies have shown that obesity is associated with increased risk of several cancer types, including colon, breast, endometrium, liver, kidney, esophagus, gastric, pancreatic, gallbladder, and leukemia, and can also lead to poorer treatment...
December 2016: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/27859422/follistatin-like-protein-1-contributes-to-dendritic-cell-and-t-lymphocyte-activation-in-nasopharyngeal-carcinoma-patients-by-altering-nuclear-factor-%C3%AE%C2%BAb-and-jun-n-terminal-kinase-expression
#18
Hong Wang, Senyong Wu, Shiping Huang, Shaolin Yin, Guilong Zou, Kuan'en Huang, Zhe Zhang, Anzhou Tang, Wensheng Wen
Follistatin-like protein 1 (FSTL1) is a newly characterized protein that can regulate the immune response in various ways. Dendritic cells (DCs) are central to immune regulation. In this study, we explored the impact of FSTL1 on DC activity in nasopharyngeal carcinoma (NPC) patients. The surface expression of CD40, CD86, and HLA-DR on DCs was analyzed and showed significantly elevated expression levels, indicating DC maturity. After FSTL1 was added to DCs collected from NPC patients (n = 50), controls (n = 47), and healthy donors (n = 10), interferon γ secretion and T-cell receptor expression in cytotoxic T lymphocytes were also investigated...
December 2016: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/27859417/runx3-inhibits-laryngeal-squamous-cell-carcinoma-malignancy-under-the-regulation-of-mir-148a-3p-dnmt1-axis
#19
Su Jili, Lu Eryong, Lu Lijuan, Zhang Chao
Laryngeal squamous cell carcinoma (LSCC) is a highly aggressive malignant cancer and accounts for 1% to 2% of all malignancies diagnosed worldwide. Runt-related transcription factor 3 (RUNX3), an important tumor suppressor, is known to related to lymph node metastasis and the development of LSCC. However, the biological roles and potential mechanisms RUNX3 expression was not well understood. In this study, we reported that the RUNX3 was significantly downregulated and highly methylated in LSCC compared with their matched normal...
December 2016: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/27859413/zak%C3%AE-antagonizes-and-ameliorates-the-cardiac-hypertrophic-and-apoptotic-effects-induced-by-zak%C3%AE
#20
Chien-Yao Fu, Wei-Wen Kuo, Tsung-Jung Ho, Su-Ying Wen, Ling-Chun Lin, Yan-Shen Tseng, Hui-Chuan Hung, Vijaya Padma Viswanadha, Jaw-Ji Yang, Chih-Yang Huang
ZAK (sterile alpha motif and leucine zipper containing kinase AZK), a serine/threonine kinase with multiple biochemical functions, has been associated with various cell processes, including cell proliferation, cell differentiation, and cardiac hypertrophy. In our previous reports, we found that the activation of ZAKα signaling was critical for cardiac hypertrophy. In this study, we show that the expression of ZAKα activated apoptosis through both a FAS-dependent pathway and a mitochondria-dependent pathway by subsequently inducing caspase-3...
December 2016: Cell Biochemistry and Function
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