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https://www.readbyqxmd.com/read/29470423/3-5-6-7-8-3-4-heptamethoxyflavone-a-citrus-flavonoid-inhibits-collagenase-activity-and-induces-type-i-procollagen-synthesis-in-hdfn-cells
#1
Hong-Il Kim, Yong-Un Jeong, Jong-Hyeon Kim, Young-Jin Park
Citrus fruits contain various types of flavonoids with powerful anti-aging and photoprotective effects on the skin, and have thus been attracting attention as potential, efficacious skincare agents. Here, we aimed to investigate the chemical composition of Citrus unshiu and its protective effects on photoaging. We isolated and identified a bioactive compound, 3,5,6,7,8,3',4'-heptamethoxyflavone (HMF), from C. unshiu peels using ethanol extraction and hexane fractionation. HMF inhibited collagenase activity and increased type I procollagen content in UV-induced human dermal fibroblast neonatal (HDFn) cells...
February 22, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29469570/ribemansides-a-and-b-trpc6-inhibitors-from-ribes-manshuricum-that-suppress-tgf-%C3%AE-1-induced-fibrogenesis-in-hk-2-cells
#2
Baoping Zhou, Yange Wang, Chunlei Zhang, Guolin Yang, Fan Zhang, Boyang Yu, Chengzhi Chai, Zhengyu Cao
Two new acylated β-hydroxynitrile glycosides, ribemansides A (1) and B (2), were isolated from the aerial parts of Ribes manshuricum. Their structures were elucidated by comprehensive spectroscopic analysis. Ribemansides A and B inhibited transforming growth factor β1 (TGF-β1)-induced expression of α-smooth muscle actin, fibronectin release, and changes in cell morphology in the human proximal tubular epithelial cell line (human kidney-2, HK-2). Further biological evaluation demonstrated that both 1 and 2 inhibit the activity of canonical transient receptor potential cation channel 6 (TRPC6), with IC50 values of 24...
February 22, 2018: Journal of Natural Products
https://www.readbyqxmd.com/read/29468833/machine-learning-integration-of-rheumatoid-arthritis-synovial-histology-and-rnaseq-data-identifies-three-disease-subtypes
#3
Dana E Orange, Phaedra Agius, Edward F DiCarlo, Nicolas Robine, Heather Geiger, Jackie Szymonifka, Michael McNamara, Ryan Cummings, Kathleen M Andersen, Serene Mirza, Mark Figgie, Lionel Ivashkiv, Alessandra B Pernis, Caroline Jiang, Mayu Frank, Robert Darnell, Nithya Lingampali, Robinson William, Ellen Gravallese, Vivian P Bykerk, Susan M Goodman, Laura T Donlin
OBJECTIVE: We sought to refine histologic scoring of rheumatoid arthritis synovial tissue by training with gene expression data and machine learning. METHODS: Twenty histologic features were assessed on 129 synovial tissue samples. Consensus clustering was performed on gene expression data from a subset of 45 synovial samples. Support vector machine learning was used to predict gene expression subtypes using histology data as input. Corresponding clinical data were compared across subtypes...
February 22, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29468299/smad4-and-epithelial-mesenchymal-transition-proteins-in-colorectal-carcinoma-an-immunohistochemical-study
#4
M Ioannou, E Kouvaras, R Papamichali, M Samara, I Chiotoglou, G Koukoulis
Epithelial-mesenchymal transition (EMT) plays an important role in cancer metastasis. During EMT, tumor cells acquire the capacity to migrate and invade the stroma. Activation of the transforming growth factor-b (TGF-b) signaling pathway is of major importance for the initiation of EMT. Smad4, an essential protein of this pathway, is known to complex with multiple transcription factors (e.g. Snail-1, Slug, Twist-1), in various types of cancer, promoting the repression or activation of target genes. The role of Smad4 in colorectal cancer (CRC) is not straightforward so far...
February 21, 2018: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29467862/lentivirus-mediated-silencing-of-hotair-lncrna-restores-gefitinib-sensitivity-by-activating-bax-caspase-3-and-suppressing-tgf-%C3%AE-egfr-signaling-in-lung-adenocarcinoma
#5
Yuanshun Liu, Hua Jiang, Hongbin Zhou, Xiwang Ying, Zhehua Wang, Yang Yang, Wulin Xu, Xujun He, Yaqing Li
Secondary resistance is a major limitation in the efficacy of epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor treatment of lung cancer. Previous studies have shown that expression of the long non-coding RNA HOX transcript antisense RNA (HOTAIR) is upregulated in lung cancer, which is correlated with metastasis and poor prognosis. However, the precise role of HOTAIR and its effects on gefitinib resistance in human lung adenocarcinoma are not known. To address this issue, in the present study we established a gefitinib-resistant (R)PC-9 human lung adenocarcinoma cell line and examined cell viability with the 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium assay...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29459640/self-assembled-collagen-fibrin-hydrogel-reinforces-tissue-engineered-adventitia-vessels-seeded-with-human-fibroblasts
#6
Bijal Patel, Zhengfan Xu, Cameron B Pinnock, Loay S Kabbani, Mai T Lam
Efforts for tissue engineering vascular grafts focuses on the tunica media and intima, although the tunica adventitia serves as the primary structural support for blood vessels. In surgery, during endarterectomies, surgeons can strip the vessel, leaving the adventitia as the main strength layer to close the vessel. Here, we adapted our recently developed technique of forming vascular tissue rings then stacking the rings into a tubular structure, to accommodate human fibroblasts to create adventitia vessels in 8 days...
February 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29456507/the-effects-of-vitamin-d-supplementation-on-signaling-pathway-of-inflammation-and-oxidative-stress-in-diabetic-hemodialysis-a-randomized-double-blind-placebo-controlled-trial
#7
Hamed Haddad Kashani, Elahe Seyed Hosseini, Hossein Nikzad, Alireza Soleimani, Maryam Soleimani, Mohammad Reza Tamadon, Fariba Keneshlou, Zatollah Asemi
Objective: This study was carried out to determine the effects of vitamin D supplementation on signaling pathway of inflammation and oxidative stress in diabetic hemodialysis (HD) patients. Methods: This randomized double-blind placebo-controlled clinical trial was conducted among 60 diabetic HD patients. Subjects were randomly allocated into two groups to intake either vitamin D supplements at a dosage of 50,000 IU ( n = 30) or placebo ( n = 30) every 2 weeks for 12 weeks. Gene expression of inflammatory cytokines and biomarkers of oxidative stress were assessed in peripheral blood mononuclear cells (PBMCs) of diabetic HD patients with RT-PCR method...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29455107/helios-expression-in-regulatory-t-cells-promotes-immunosuppression-angiogenesis-and-the-growth-of-leukemia-cells-in-pediatric-acute-lymphoblastic-leukemia
#8
Xue Li, Dong Li, Xiaoyang Huang, Panpan Zhou, Qing Shi, Bing Zhang, Xiuli Ju
Regulatory T cells (Tregs) characterized by the transcription factor forkhead box P3 (FoxP3) are crucial for maintaining immune tolerance and preventing autoimmunity. However, FoxP3 does not function alone and Helios is considered a potential candidate for defining Treg subsets. In this study, we investigated the expression and function of Helios for identifying Tregs in childhood precursor B-cell acute lymphoblastic leukemia (pre-B ALL). Our results demonstrated that patients with pre-B ALL had a higher percentage of Helios+ FoxP3+ CD4+ Tregs...
February 14, 2018: Leukemia Research
https://www.readbyqxmd.com/read/29452196/staphylococcus-aureus-induces-tgf-%C3%AE-1-and-bfgf-expression-through-the-activation-of-ap-1-and-nf-%C3%AE%C2%BAb-transcription-factors-in-bovine-mammary-epithelial-cells
#9
Jianmei Wu, Yulin Ding, Jinling Wang, Fenglong Wang
Staphylococcus aureus is a common Gram-positive pathogen that causes bovine mastitis, a persistent infection of the bovine mammary gland. Bovine mammary epithelial cells (BMEC) are important parenchymal cells of the bovine mammary gland. To better understand the importance of BMEC and the roles of the TLR-NF-κBand TLR-AP-1 signaling pathways in the regulation of S. aureus-associated mastitis and mammary fibrosis, BMEC cultured in vitro were stimulated with different concentrations of heat-inactivated S. aureus to analyze the gene and protein expression and production of toll-like receptor 2 (TLR2), toll-like receptor 4 (TLR4), transforming growth factor beta 1 (TGF-β1), basic fibroblast growth factor (bFGF) as well as the protein expression of nuclear factor-kappa B (NF-κB) and activation protein-1 (AP-1) by means of quantitative polymerase chain reaction (qPCR) and western blotting, respectively...
February 13, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29447964/botulinum-toxin-type-a-relieves-sternocleidomastoid-muscle-fibrosis-in-congenital-muscular-torticollis
#10
Banghong Jiang, Wenxuan Zu, Jing Xu, Zhuyou Xiong, Yichao Zhang, Song Gao, Shuxing Ge, Li Zhang
Congenital muscular torticollis (CMT) is a neck deformity that involves shortening of sternocleidomastoid muscle (SCM) characterized by muscle atrophy and interstitial fibrosis. To investigate wheatear Botulinum toxin type A (BTA) has anti-fibrotic effects in CMT, we established acquired muscular torticollis that mimetics CMT in rabbit by intra-SCM injection of anhydrous alcohol. The treatment groups received BTA (2.5 units or 5 units) injection into the fibrotic SCM. The shortening and thickening of SCM were recorded by B-mode ultrasound...
February 12, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29446095/orobanche-cernua-loefling-attenuates-ultraviolet-b-mediated-photoaging-in-human-dermal-fibroblasts
#11
Wei Gao, Yu-Shuai Wang, Zheng-Yi Qu, Eunson Hwang, Hien T T Ngo, Ying-Ping Wang, Jahyun Bae, Tae-Hoo Yi
UV radiation is the primary cause of skin photoaging, which results in an increase in matrix metalloproteinases and degradation of collagen. Developing new natural antioxidant as photoprotective agents have become a popular area of research. Orobanche cernua Loefling is a parasitic plant that is rich in phenylethanoid glycosides (PhGs). This study investigated the photoprotective effects of the ethanolic extract of Orobanche cernua Loefling (OC) and its principal component acteoside on UVB-induced photoaging as well as their underlying molecular mechanisms in normal human dermal fibroblasts (NHDFs)...
February 15, 2018: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/29435202/podocyte-derived-microparticles-promote-proximal-tubule-fibrotic-signaling-via-p38-mapk-and-cd36
#12
Mercedes N Munkonda, Shareef Akbari, Chloe Landry, Suzy Sun, Fengxia Xiao, Maddison Turner, Chet E Holterman, Rania Nasrallah, Richard L Hébert, Christopher R J Kennedy, Dylan Burger
Tubulointerstitial fibrosis is a hallmark of advanced diabetic kidney disease that is linked to a decline in renal function, however the pathogenic mechanisms are poorly understood. Microparticles (MPs) are 100-1000 nm vesicles shed from injured cells that are implicated in intercellular signalling. Our lab recently observed the formation of MPs from podocytes and their release into urine of animal models of type 1 and 2 diabetes and in humans with type 1 diabetes. The purpose of the present study was to examine the role of podocyte MPs in tubular epithelial cell fibrotic responses...
2018: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/29432674/shen-kang-protects-against-tacrolimus-induced-renal-injury
#13
Long Ye Zhang, Jian Jin, Kang Luo, Shang Guo Piao, Hai Lan Zheng, Ji Zhe Jin, Sun Woo Lim, Bum Soon Choi, Chul Woo Yang, Can Li
Background/Aims: Evidence suggests that Shen-Kang (SK), a traditional Chinese herbal medicine, protects against various types of renal injury. In this study, we evaluated whether SK treatment confers renoprotection in a rat model of chronic tacrolimus (TAC) nephropathy. Methods: Rats were treated daily with TAC (1.5mg/kg, subcutaneously) and SK (450 mg/kg, intravenously) for 4 weeks. The effects of SK on TAC-induced renal injury were assessed by measuring renal function, urine albumin excretion, histopathology, inflammatory cell infiltration, expression of profibrotic (transforming growth factor β1 [TGF-β1] and TGF-β inducible gene-h3 [βig-h3]) and proinflammatory cytokines, oxidative stress, and apoptotic cell death...
February 12, 2018: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/29426578/tgf-%C3%AE-signalling-defect-is-linked-to-low-cd39-expression-on-regulatory-t-cells-and-methotrexate-resistance-in-rheumatoid-arthritis
#14
Raphael S Peres, Paula B Donate, Jhimmy Talbot, Nerry T Cecilio, Patricia R Lobo, Caio C Machado, Kalil W A Lima, Rene D Oliveira, Vanessa Carregaro, Helder I Nakaya, Thiago M Cunha, José Carlos Alves-Filho, Foo Y Liew, Paulo Louzada-Junior, Fernando Q Cunha
Rheumatoid arthritis (RA) is an autoimmune arthropathy characterized by chronic articular inflammation. Methotrexate (MTX) remains the first-line therapy for RA and its anti-inflammatory effect is associated with the maintenance of high levels of extracellular adenosine (ADO). Nonetheless, up to 40% of RA patients are resistant to MTX treatment and this is linked to a reduction of CD39 expression, an ectoenzyme involved in the generation of extracellular ADO by ATP metabolism, on circulating regulatory T cells (Tregs)...
February 6, 2018: Journal of Autoimmunity
https://www.readbyqxmd.com/read/29425464/renin-angiotensin-system-inhibition-ameliorates-ccl4-induced-liver-fibrosis-in-mice-through-the-inactivation-of-nuclear-transcription-factor-kappa-b
#15
Sameh Saber, Amr A A Mahmoud, Noha Said Helal, Eman El-Ahwany, Rasha Abdelghany
Therapeutic interventions for liver fibrosis are still limited due to the complicated molecular pathogenesis. Renin-angiotensin system (RAS) seems to contribute to the development of hepatic fibrosis. Therefore, we aimed to examine the effect of RAS inhibition on CCl4-induced liver fibrosis. Mice were treated with silymarin (30 mg kg-1), perindopril (1 mg kg-1), fosinopril (2 mg kg-1), or losartan (10 mg kg-1). The administration RAS inhibitors improved liver histology and decreased protein expression of alpha smooth muscle actin (α-SMA) and hepatic content of hydroxyproline...
February 9, 2018: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/29421350/long-term-evaluation-of-osteoarthritis-sheep-knee-treated-with-tgf-%C3%AE-3-and-bmp-6-induced-multipotent-stem-cells
#16
C C Ude, B S Shamsul, M H Ng, H C Chen, Htwe Ohnmar, S N Amaramalar, A R Rizal, A Johan, M Y Norhamdan, M Azizi, B S Aminuddin, B H I Ruszymah
BACKGROUND: Hyaline articular cartilage, which protects the bones of diarthrodial joints from forces associated with load bearing, frictions, and impacts has very limited capacities for self-repair. Over the years, the trend of treatments has shifted to regenerations and researchers have been on the quest for a lasting regeneration. We evaluated the treatment of osteoarthritis by chondrogenically induced ADSCs and BMSCs for a long time functional recovery. METHODS: Osteoarthritis was induced at the right knee of sheep by complete resection of ACL and medial meniscus...
January 29, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29420705/differential-expression-of-micrornas-in-peripheral-blood-mononuclear-cells-identifies-autophagy-and-tgf-beta-related-signatures-aberrantly-expressed-in-inflammatory-bowel-disease
#17
Aylia Mohammadi, Orlaith B Kelly, Melissa Filice, Boyko Kabakchiev, Michelle I Smith, Mark S Silverberg
Background and Aims: MicroRNAs (miRNAs) have emerged as important regulators in inflammatory bowel disease (IBD). This study investigated differential expression of miRNAs across clinical phenotypes in a well-characterized cohort of IBD patients and healthy controls (HCs). Methods: A cohort with Crohn's disease (CD), ulcerative colitis (UC), and HC was prospectively accrued. Total RNA was extracted from peripheral blood mononuclear cells for all subjects. MiRNA expression was measured using NanoString Technologies...
February 6, 2018: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/29420022/the-transcriptomics-related-mechanisms-of-supplementing-laying-broiler-breeder-hens-with-dietary-daidzein-to-improve-the-immune-function-and-growth-performance-of-offspring
#18
Hao Fan, Zengpeng Lv, Liping Gan, Yuming Guo
Daidzein (DA) is an isoflavone that is primarily extracted from soy plants. This study evaluated the effects of supplementing laying broiler breeder hens with dietary DA on the immune function and growth performance of their offspring and the underlying mechanism. A total of 720 breeders were divided into 3 treatment groups that were fed either a control diet (CON), a DA-low-supplemented diet (DLS, CON+20 mg/kg DA) or a DA-high-supplemented diet (DHS, CON+100 mg/kg DA) for 8 weeks, eggs were collected for hatching during the final week...
February 8, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29414645/activation-of-autophagy-is-required-for-oroxylin-a-to-alleviate-carbon-tetrachloride-induced-liver-fibrosis-and-hepatic-stellate-cell-activation
#19
Weiwei Chen, Zili Zhang, Zhen Yao, Ling Wang, Feng Zhang, Jiangjuan Shao, Anping Chen, Shizhong Zheng
Liver fibrosis is a reversible pathophysiological process correlated with intense repair and cicatrization mechanisms, and its end-stage cirrhosis is responsible for high morbidity and mortality worldwide. Interestingly, the use of natural products as a realistic option for the treatment of liver fibrosis has broadly been accepted. Oroxylin A, a safe and natural product, shows a wide range of pharmacological activities such as anti-inflammatory, anti-oxidant, and anti-tumor properties. However, the effects of Oroxylin A on liver fibrosis remain poorly understood...
January 24, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29413760/multifaceted-roles-of-interleukin-6-in-adipocyte-breast-cancer-cell-interaction
#20
REVIEW
Jones Gyamfi, Minseob Eom, Ja-Seung Koo, Junjeong Choi
Breast cancer is the most common malignancy in women worldwide, with a developmental process spanning decades. The malignant cells recruit a variety of cells including fibroblasts, endothelial cells, immune cells, and adipocytes, creating the tumor microenvironment. The tumor microenvironment has emerged as active participants in breast cancer progression and response to treatment through autocrine and paracrine interaction with the malignant cells. Adipose tissue is abundant in the breast cancer microenvironment; interactions with cancer cells create cancer-associated adipocytes which produce a variety of adipokines that influence breast cancer initiation, metastasis, angiogenesis, and cachexia...
January 30, 2018: Translational Oncology
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