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https://www.readbyqxmd.com/read/29232010/protective-effect-of-hsp27-in-atherosclerosis-and-coronary-heart-disease-by-inhibiting-reactive-oxygen-species
#1
Hongli Zhang, Kaiying Jia, Da Sun, Min Yang
OBJECTIVE: To clarify the mechanism of HSP27 as a diagnostic biomarker in coronary heart disease (CHD) and atherosclerosis (AS). METHOD: Expressions of HSP27 in CHD patients and healthy controls were determined by ELISA, and expressions of HSP27 in aortas of CHD patients and healthy controls were measured by Immunohistochemistry. ROC curve was applied to assess the diagnostic performance of HSP27 in CHD. ApoE-/- mice were included and accordingly grouped. The expressions of HSP27 in AS plaque were measured by qRT-PCR, Immunohistochemistry and Western blot...
December 12, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29222335/single-cell-transcriptome-sequencing-reveals-that-cell-division-cycle-5-like-protein-is-essential-for-porcine-oocyte-maturation
#2
Xiao-Man Liu, Yan-Kui Wang, Yun-Hua Liu, Xiao-Xia Yu, Pei-Chao Wang, Xuan Li, Zhi-Qiang Du, Cai-Xia Yang
The brilliant cresyl blue (BCB) test is used in both basic biological research and assisted reproduction to identify oocytes likely to be developmentally competent. However, the underlying molecular mechanism targeted by the BCB test is still unclear. To explore this question, we first confirmed that BCB-positive porcine oocytes had higher rates of meiotic maturation, better rates of cleavage and development into blastocysts, and lower death rates. Subsequent single-cell transcriptome sequencing on porcine germinal vesicle (GV)-stage oocytes identified 155 genes that were significantly differentially expressed between BCB-negative and BCB-positive oocytes...
December 8, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29220406/excessively-low-salt-diet-damages-the-heart-through-activation-of-cardiac-pro-renin-receptor-renin-angiotensin-aldosterone-and-sympatho-adrenal-systems-in-spontaneously-hypertensive-rats
#3
Chihiro Okamoto, Yuka Hayakawa, Takuma Aoyama, Hisaaki Komaki, Shingo Minatoguchi, Masamitsu Iwasa, Yoshihisa Yamada, Hiromitsu Kanamori, Masanori Kawasaki, Kazuhiko Nishigaki, Atsushi Mikami, Shinya Minatoguchi
OBJECTIVE: A high salt intake causes hypertension and leads to cardiovascular disease. Therefore, a low salt diet is now recommended to prevent hypertension and cardiovascular disease. However, it is still unknown whether an excessively low salt diet is beneficial or harmful for the heart. METHODS: Wistar Kyoto rats (WKYs) and spontaneously hypertensive rats (SHRs) received normal salt chow (0.9% salt diet) and excessively low salt chow (0.01% salt diet referred to as saltless diet) for 8 weeks from 8 to 16 weeks of age...
2017: PloS One
https://www.readbyqxmd.com/read/29209372/heat-shock-protein-27-plays-a-protective-role-in-thoracic-aortic-dissection-by-promoting-cell-proliferation-and-inhibiting-apoptosis
#4
Sili Zou, Mingfang Liao, Junlin Yang, Tong Huang, Mark Green, Jianjin Wu, Lefeng Qu
Background: Thoracic aortic dissection (TAD) is one of the most severe aortic diseases. The study aimed to explore the potential role of heat shock protein 27 (HSP27) in the pathogenesis of TAD using an in vitro model of oxidative stress in vascular smooth muscle cells (VSMCs). Methods: HSP27 was analyzed in aortic surgical specimens from 12 patients with TAD and 8 healthy controls. A lentiviral vector was used to overexpress HSP27 in rat aortic VSMCs. Cell proliferation and apoptosis were measured under oxidative stress induced by H2O2...
2017: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/29202822/the-p75ntr-mediated-effect-of-nerve-growth-factor-in-l6c5-myogenic-cells
#5
Alessandra de Perini, Ivan Dimauro, Guglielmo Duranti, Cristina Fantini, Neri Mercatelli, Roberta Ceci, Luigi Di Luigi, Stefania Sabatini, Daniela Caporossi
OBJECTIVE: During muscle development or regeneration, myocytes produce nerve growth factor (NGF) as well as its tyrosine-kinase and p75-neurotrophin (p75NTR) receptors. It has been published that the p75NTR receptor could represent a key regulator of NGF-mediated myoprotective effect on satellite cells, but the precise function of NGF/p75 signaling pathway on myogenic cell proliferation, survival and differentiation remains fragmented and controversial. Here, we verified the role of NGF in the growth, survival and differentiation of p75NTR-expressing L6C5 myogenic cells, specifically inquiring for the putative involvement of the nuclear factor κB (NFκB) and the small heat shock proteins (sHSPs) αB-crystallin and Hsp27 in these processes...
December 4, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/29191461/endoplasmic-reticulum-stress-precedes-oxidative-stress-in-antibiotic-induced-cholestasis-and-cytotoxicity-in-human-hepatocytes
#6
Audrey Burban, Ahmad Sharanek, Christiane Guguen-Guillouzo, André Guillouzo
Endoplasmic reticulum (ER) stress has been associated with various drug-induced liver lesions but its participation in drug-induced cholestasis remains unclear. We first aimed at analyzing liver damage caused by various hepatotoxic antibiotics, including three penicillinase-resistant antibiotics (PRAs), i.e. flucloxacillin, cloxacillin and nafcillin, as well as trovafloxacin, levofloxacin and erythromycin, using human differentiated HepaRG cells and primary hepatocytes. All these antibiotics caused early cholestatic effects typified by bile canaliculi dilatation and reduced bile acid efflux within 2h and dose-dependent enhanced caspase-3 activity within 24h...
November 27, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29181170/role-of-kr%C3%A3-ppel-like-factor-4-and-heat-shock-protein-27-in-cancer-of-the-larynx
#7
Jihad Karam, Marie Claude Fadous-Khalifé, Rita Tannous, Sally Fakhreddine, Marcel Massoud, Joseph Hadchity, Georges Aftimos, Elie Hadchity
Late detection and lack of standard treatment strategies in larynx cancer patients result in high levels of mortality and poor prognosis. Prognostic stratification of larynx cancer patients based on molecular prognostic tumor biomarkers may lead to more efficient clinical management. Krüppel-like factor 4 (KLF4) and Heat Shock Protein 27 (HSP27) have an important role in tumorigenesis and are considered promising candidate biomarkers for various types of cancer. However, their role in larynx carcinoma remains to be elucidated...
November 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/29180963/spinal-cord-molecular-and-cellular-changes-induced-by-adenoviral-vector-and-cell-mediated-triple-gene-therapy-after-severe-contusion
#8
Andrei A Izmailov, Tatyana V Povysheva, Farid V Bashirov, Mikhail E Sokolov, Filip O Fadeev, Ravil R Garifulin, Boris S Naroditsky, Denis Y Logunov, Ilnur I Salafutdinov, Yuri A Chelyshev, Rustem R Islamov, Igor A Lavrov
The gene therapy has been successful in treatment of spinal cord injury (SCI) in several animal models, although it still remains unavailable for clinical practice. Surprisingly, regardless the fact that multiple reports showed motor recovery with gene therapy, little is known about molecular and cellular changes in the post-traumatic spinal cord following viral vector- or cell-mediated gene therapy. In this study we evaluated the therapeutic efficacy and changes in spinal cord after treatment with the genes encoding vascular endothelial growth factor (VEGF), glial cell-derived neurotrophic factor (GDNF), angiogenin (ANG), and neuronal cell adhesion molecule (NCAM) applied using both approaches...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29177658/analysis-of-hspb1-hsp27-oligomerization-and-phosphorylation-patterns-and-its-interaction-with-specific-client-polypeptides
#9
André-Patrick Arrigo
Human HspB1 (also denoted as Hsp27) belongs to the family of small (or stress) proteins (sHsps). The family, which contains ten members including αA,B-crystallin polypeptides, is characterized by a conserved C-terminal α-crystallin domain and molecular weights ranging from 20 to 40 kDa. Here, procedures are described for analyzing the dynamic oligomerization and phosphorylation patterns of HspB1 in cells exposed to different environments. Changes in the structural organization of HspB1 can reprogram its interaction with specific partner/client polypeptides...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29175119/circulating-levels-of-hsp27-in-microvascular-complications-of-diabetes-prospects-as-a-biomarker-of-diabetic-nephropathy
#10
Sneha Jakhotia, Mudili Sivaprasad, Tattari Shalini, Paduru Yadagiri Reddy, Kalluru Viswanath, Khubchand Jakhotia, Rakesh Sahay, Manisha Sahay, Geereddy Bhanuprakash Reddy
AIM: Heat shock protein 27 (Hsp27) is a small heat shock protein known to protect the cells from apoptosis under stress. In the present study, we determined the plasma Hsp27 levels in type 2 diabetes subjects without and with microvascular complications- diabetic retinopathy (DRe), diabetic nephropathy (DNe), and diabetic neuropathy (DNu) to understand if it could serve as a marker for these complications. METHODS: This is a hospital-based case-control study with 754 subjects including 247 controls, 195 subjects with diabetes, 123 with DRe, 80 with DNe and 109 with DNu...
October 16, 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/29170092/krit1-loss-of-function-induces-a-chronic-nrf2-mediated-adaptive-homeostasis-that-sensitizes-cells-to-oxidative-stress-implication-for-cerebral-cavernous-malformation-disease
#11
Cinzia Antognelli, Eliana Trapani, Simona Delle Monache, Martina Daga, Stefania Pizzimenti, Giuseppina Barrera, Paola Cassoni, Adriano Angelucci, Lorenza Trabalzini, Vincenzo Nicola Talesa, Luca Goitre, Saverio Francesco Retta
KRIT1 (CCM1) is a disease gene responsible for Cerebral Cavernous Malformations (CCM), a major cerebrovascular disease of proven genetic origin affecting 0.3-0.5% of the population. Previously, we demonstrated that KRIT1 loss-of-function is associated with altered redox homeostasis and abnormal activation of the redox-sensitive transcription factor c-Jun, which collectively result in pro-oxidative, pro-inflammatory and pro-angiogenic effects, suggesting a novel pathogenic mechanism for CCM disease and raising the possibility that KRIT1 loss-of-function exerts pleiotropic effects on multiple redox-sensitive mechanisms...
November 20, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29167193/airway-transplantation-of-adipose-stem-cells-protects-against-bleomycin-induced-pulmonary-fibrosis
#12
Pedro Llontop, Daniel Lopez-Fernandez, Bernardino Clavo, Juan Luis Afonso Martín, María D Fiuza-Pérez, Mariano García Arranz, Joaquín Calatayud, Laureano Molins López-Rodó, Khalid Alshehri, Adil Ayub, Wissam Raad, Faiz Bhora, Norberto Santana-Rodríguez
Idiopathic pulmonary fibrosis (IPF) is a progressive interstitial lung disease with poor prognosis. Adipose-derived stem cells (ADSC) have demonstrated regenerative properties in several tissues. The hypothesis of this study was that airway transplantation of ADSC could protect against bleomycin (BLM)-induced pulmonary fibrosis (PF). Fifty-eight lungs from 29 male Sprague-Dawley rats were analyzed. Animals were randomly divided into five groups: a) control (n=3); b) sham (n=6); c) BLM (n=6); d) BLM+ADSC-2d (n=6); and e) BLM+ADSC-14d (n=8)...
November 21, 2017: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
https://www.readbyqxmd.com/read/29149771/hoxc13-and-hsp27-expression-in-skin-and-the-periodic-growth-of-secondary-fiber-follicles-from-longdong-cashmere-goats-raised-in-different-production-systems
#13
Jiqing Wang, Ping Yu, Haifang Wang, Yanyu He
This experiment was conducted to identify periodic changes in secondary follicles (SFs) over one year of extensive (grazed) and intensive (housed and fed supplement) farming of Longdong cashmere goats. One-year old goats (n = 24, 12 extensively fed and 12 intensively fed) were studied. The diameter, depth, density, activity, and ultra-structural features of SFs were assessed using light microscopy and transmission electron microscopy (TEM). HOXC13 and HSP27 expression were studied using immunohistochemistry and immunofluorescence method...
November 17, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29137154/two-sulfur-glycoside-compounds-isolated-from-lepidium-apetalum-willd-protect-nrk52e-cells-against-hypertonic-induced-adhesion-and-inflammation-by-suppressing-the-mapk-signaling-pathway-and-raas
#14
Peipei Yuan, Xiaoke Zheng, Meng Li, Yingying Ke, Yang Fu, Qi Zhang, Xiaolan Wang, Weisheng Feng
Lepidium apetalum Willd has been used to reduce edema and promote urination. Cis-desulfoglucotropaeolin (cis-DG) and trans-desulfoglucotropaeolin (trans-DG) were isolated from Lepidium apetalum Willd, and caused a significant increase in cell viability in a hypertonic model in NRK52e cells. In the hypertonic model, cis-DG and trans-DG significantly promoted the cell viability of NRK52e cells and inhibited the elevation of Na⁺ in the supernatant, inhibited the renin-angiotensin-aldosterone (RAAS) system, significantly reduced the levels of angiotensin II (Ang II) and aldosterone (ALD), and lowered aquaporin-2 (AQP2) and Na⁺-K⁺ ATP content in renal medulla...
November 12, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29135234/evaluating-the-effect-of-phosphorylation-on-the-structure-and-dynamics-of-hsp27-dimers-by-means-of-ion-mobility-mass-spectrometry
#15
Blagojce Jovcevski, Megan A Kelly, J Andrew Aquilina, Justin L P Benesch, Heath Ecroyd
The quaternary structure and dynamics of the human small heat-shock protein Hsp27 is linked to its molecular chaperone function and influenced by post-translational modifications, including phosphorylation. Phosphorylation of Hsp27 promotes oligomer dissociation and can enhance chaperone activity. This study explored the impact of phosphorylation on the quaternary structure and dynamics of Hsp27. Using mutations that mimic phosphorylation and ion mobility mass spectrometry we show that successive substitutions result in an increase in the conformational heterogeneity of Hsp27 dimers...
November 14, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29133339/decreased-ceramide-underlies-mitochondrial-dysfunction-in-charcot-marie-tooth-2f
#16
Nicholas U Schwartz, Ryan W Linzer, Jean-Philip Truman, Mikhail Gurevich, Yusuf A Hannun, Can E Senkal, Lina M Obeid
Charcot-Marie-Tooth (CMT) disease is the most commonly inherited neurologic disorder, but its molecular mechanisms remain unclear. One variant of CMT, 2F, is characterized by mutations in heat shock protein 27 (Hsp27). As bioactive sphingolipids have been implicated in neurodegenerative diseases, we sought to determine if their dysregulation is involved in CMT. Here, we show that Hsp27 knockout mice demonstrated decreases in ceramide in peripheral nerve tissue and that the disease-associated Hsp27 S135F mutant demonstrated decreases in mitochondrial ceramide...
November 13, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29124510/lps-ameliorates-renal-ischemia-reperfusion-injury-via-hsp27-up-regulation
#17
Kang He, Lei Xia, Jianjun Zhang
PURPOSE: We have recently reported lipopolysaccharide (LPS) pretreatment attenuated renal ischemia/reperfusion injury (IRI), but the exact mechanism remains to be well elucidated. It was reported that heat shock protein (Hsp) 27 was up-regulated after administration of LPS, but whether a direct link existed between Hsp27 up-regulation and LPS-induced protection against renal IRI is still unknown. METHODS: Mice were exposed to IRI or sham procedure, with pretreatment of LPS or not...
November 9, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/29103821/the-impact-of-cytokine-responses-in-the-intra-and-extracellular-signaling-network-of-a-traumatic-injury
#18
Alice A Han, Holly N Currie, Matthew S Loos, Giovanni Scardoni, Julie V Miller, Nicole Prince, Julia A Mouch, Jonathan W Boyd
Investigations of cellular responses involved in injury and repair processes have generated valuable information contributing to the advancement of wound healing and treatments. Intra- and extracellular regulators of healing mechanisms, such as cytokines, signaling proteins, and growth factors, have been described to possess significant roles in facilitating optimal recovery. This study explored a collection of 30 spatiotemporal responses comprised of cytokines (IL-1α, IL-1ß, IL-2, IL-6, TNF-α, MIP-1α), intracellular proteins (Akt, c-Jun, CREB, ERK1/2, JNK, MEK1, p38, p53, p90RSK), phosphorylated proteins (p-Akt, p-c-Jun, p-CREB, p-ERK1/2, p-GSK-3α/ß, p-HSP27, p-IκBα, p-JNK, p-MEK1, p-p38, p-p70S6K, p-p90RSK, p-STAT2, p-STAT3), and a protease (Caspase-3), measured in skeletal muscle tissue following a traumatic injury (rodent Gustilo IIIB fracture)...
November 2, 2017: Cytokine
https://www.readbyqxmd.com/read/29100389/targeting-hsp27-eif4e-interaction-with-phenazine-compound-a-promising-alternative-for-castration-resistant-prostate-cancer-treatment
#19
Ziouziou Hajer, Andrieu Claudia, Laurini Erik, Karaki Sara, Fermeglia Maurizio, Oueslati Ridha, Taieb David, Camplo Michel, Siri Olivier, Pricl Sabrina, Katsogiannou Maria, Rocchi Palma
The actual strategy to improve current therapies in advanced prostate cancer involves targeting genes activated by androgen withdrawal, either to delay or prevent the emergence of the castration-refractory phenotype. However, these genes are often implicated in several physiological processes, and long-term inhibition of survival proteins might be accompanied with cytotoxic effects. To avoid this problem, an alternative therapeutic strategy relies on the identification and use of compounds that disrupt specific protein-protein interactions involved in androgen withdrawal...
September 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29099815/expression-of-heat-shock-protein-27-hsp27-and-p38mapk-in-esophageal-squamous-cell-carcinoma
#20
Yan Zhang, Zhiyin Feng, Weina Wang, Juanjuan Dong, Xiaojin Gong, Hongwei Pu, Xiao Chen
BACKGROUND Esophageal squamous cell carcinoma (ESCC) is a worldwide concern. This study looked at the relationship between the expression of differential proteins and the clinicopathological data and survival rate of ESCC patients to identify potential tumor markers for the growth and metastasis of ESCC. MATERIAL AND METHODS This study included 162 patients who underwent surgical excision for management of ESCC. Fresh ESCC tissue and adjacent normal tissue specimens were collected. Protein expressions were detected by western blotting...
November 3, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
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