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https://www.readbyqxmd.com/read/28636634/cardiomyopathy-development-protection-after-myocardial-infarction-in-rats-successful-competition-for-major-dihydropyridines-common-metabolite-against-captopril
#1
Katarzyna A Mitręga, Adrianna M Spałek, Jerzy Nożyński, Maurycy Porc, Magdalena Stankiewicz, Tadeusz F Krzemiński
During the last 25 years angiotensin-converting enzyme inhibitors spectacularly conquered the field of cardiovascular diseases therapy. Nevertheless, lack of new studies concerning side effects associated with their chronic administration seems to be rather confusing. In our previous research, we proved that the main furnidipines' metabolite (M-2) possess multiple cardioprotective actions. Currently, we compared effects of post-infarction long-term oral treatment with M-2 and captopril on hemodynamic parameters and "ischemic cardiomyopathy" development in rats...
2017: PloS One
https://www.readbyqxmd.com/read/28636415/comprehensive-modeling-of-corneal-alkali-injury-in-the-rat-eye
#2
Hosoon Choi, Casie Phillips, Joo Youn Oh, Eileen M Stock, Dong-Ki Kim, Jae-Kyung Won, Samuel Fulcher
PURPOSE: To characterize the molecular, clinical, and histopathological profiles in the rat cornea after alkali injury over a 21-day period. METHODS: Alkali injury was induced in one eye of male Lewis rats. Corneal opacity and corneal neovascularization were assessed daily. Real-time qRT-PCR analysis and immunohistochemical staining were conducted to examine inflammation, neovascularization, and fibrosis. RESULTS: We found that within 2 hours of chemical exposure, corneal opacification rapidly developed with an acute increase in various cytokine expressions, while several cytokines demonstrated a secondary peak by day 7...
June 21, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28636406/protective-effect-of-intravitreal-administration-of-exosomes-derived-from-mesenchymal-stem-cells-on-retinal-ischemia
#3
Elad Moisseiev, Johnathon D Anderson, Sharon Oltjen, Mayank Goswami, Robert J Zawadzki, Jan A Nolta, Susanna S Park
PURPOSE: Exosomes derived from human mesenchymal stem cells (hMSCs) cultured under hypoxic conditions contain proteins and growth factors that promote angiogenesis. This study investigated the effect of intravitreal administration of these exosomes on retinal ischemia using a murine model. METHODS: Oxygen-induced retinopathy (OIR) was induced by exposing one-week-old male C57BL/6J mice to 5 days of 75% hyperoxic conditioning, and returning to room air. After hyperoxic conditioning, the right eye of each mouse was injected intravitreally with 1 µl saline or exosomes derived from hMSCs and compared to control mice of the same age raised in room air without OIR injected intravitreally with saline...
June 21, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28636206/retinal-vascular-injuries-and-intravitreal-human-embryonic-stem-cell-derived-haemangioblasts
#4
Jin-Da Wang, Ying An, Jing-Shang Zhang, Xiu-Hua Wan, Wei Zhang, Robert Lanza, Shi-Jiang Lu, Jost B Jonas, Liang Xu
OBJECTIVE: To investigate whether intravitreally applied haemangioblasts (HB) derived from human embryonic stem cells (hESCs) are helpful for the repair of vascular damage caused in animals by an oxygen-induced retinopathy (OIR), by an induced diabetic retinopathy (DR) or by an induced retinal ischaemia with subsequent reperfusion. METHODS: Human embryonic stem cell-derived HBs were transplanted intravitreally into C57BL/6J mice (OIR model), into male Wistar rats with an induced DR and into male Wistar rats undergoing induced retinal ischaemia with subsequent reperfusion...
June 21, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28636006/copper-ion-interaction-with-the-rnase-catalytic-site-fragment-of-the-angiogenin-protein-an-experimental-and-theoretical-investigation
#5
Antonio Magrì, Giovanni Tabbì, Raffaella Breglia, Luca De Gioia, Piercarlo Fantucci, Maurizio Bruschi, Raffaele P Bonomo, Diego La Mendola
The angiogenin protein (Ang) is a member of the vertebrate-specific secreted ribonucleases and one of the most potent angiogenic factors known. Ang is a normal constituent of human plasma and its concentration increases under some physiological and pathological conditions to promote neovascularization. Ang was originally identified as an angiogenic tumour factor, but its biological activity has been found to extend from inducing angiogenesis to promoting cell survival in different neurodegenerative diseases...
June 21, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28635422/metallothionein-polymorphisms-in-a-northern-spanish-population-with-neovascular-and-dry-forms-of-age-related-macular-degeneration
#6
Montserrat García, Lydia Álvarez, Ángela Fernández, Héctor González-Iglesias, Julio Escribano, Beatriz Fernández-Vega, Eva Villota, Luis Fernández-Vega Cueto, Álvaro Fernández-Vega, Miguel Coca-Prados
BACKGROUND: To elucidate the potential role of single nucleotide polymorphisms (SNPs) in the metallothionein (MT) genes in Northern Spanish patients with age-related macular degeneration (AMD). METHODS: A total of 130 unrelated Northern Spanish natives diagnosed with AMD (46 dry, 35 neovascular, and 49 mixed) and 96 healthy controls, matched by age and ethnicity, were enrolled in a case-control study. DNA was isolated from peripheral blood and genotyped for 14 SNPs located at 5 MT genes (MT1A: rs11076161, rs 11640851, rs8052394, and rs7196890; MT1B: rs8052334, rs964372, and rs7191779; MT1M: rs2270836 and rs9936741; MT2A: rs28366003, rs1610216, rs10636, and rs1580833; MT3: rs45570941) using TaqMan probes...
March 1, 2017: Ophthalmic Genetics
https://www.readbyqxmd.com/read/28632880/the-urokinase-receptor-derived-peptide-uparant-recovers-dysfunctional-electroretinogram-and-blood-retinal-barrier-leakage-in-a-rat-model-of-diabetes
#7
Maurizio Cammalleri, Filippo Locri, Stefania Marsili, Massimo Dal Monte, Claudio Pisano, Angelo Mancinelli, Liliana Lista, Dario Rusciano, Mario De Rosa, Vincenzo Pavone, Paola Bagnoli
Purpose: The activation of the urokinase-type plasminogen activator and its receptor system is associated with retinal diseases. Among peptide inhibitors of this system, UPARANT acts by preventing the onset of pathologic signs of neovascular ocular diseases. We investigated whether systemic UPARANT may act in a therapeutic regimen by suppressing the retinal damage that characterizes diabetic retinopathy using a rat model of streptozotocin-induced diabetes. Methods: In healthy rats, plasma, eye, and retina concentrations of UPARANT were evaluated by mass spectrometry...
June 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28632131/reciprocal-analyses-in-zebrafish-and-medaka-reveal-that-harnessing-the-immune-response-promotes-cardiac-regeneration
#8
Didier Yr Stainier, Shih-Lei Ben Lai, Rubén Marín-Juez, Pedro Luís Moura, Carsten Kuenne, Jason Kuan Han Lai, Ayele Taddese Tsedeke, Stefan Guenther, Mario Looso
Zebrafish display a distinct ability to regenerate their heart following injury. However, this ability is not shared by another teleost, the medaka. In order to identify cellular and molecular bases for this difference, we performed comparative transcriptomic analyses following cardiac cryoinjury. This comparison points to major differences in immune cell dynamics between these models. Upon closer examination, we observed delayed and reduced macrophage recruitment in medaka, along with delayed neutrophil clearance...
June 20, 2017: ELife
https://www.readbyqxmd.com/read/28631253/portal-branch-ligation-does-not-counteract-the-inhibiting-effect-of-temsirolimus-on-extrahepatic-colorectal-metastatic-growth
#9
Sebastian Senger, Jens Sperling, Barbara Oberkircher, Martin K Schilling, Otto Kollmar, Michael D Menger, Christian Ziemann
The mTor-inhibitor temsirolimus (TEM) has potent anti-tumor activities on extrahepatic colorectal metastases. Treatment of patients with advanced disease may require portal branch ligation (PBL). While PBL can induce intrahepatic tumor growth, the effect of PBL on extrahepatic metastases under TEM treatment is unknown. Therefore, we analyzed the effects of TEM treatment on extrahepatic metastases during PBL-associated liver regeneration. GFP-transfected CT26.WT colorectal cancer cells were implanted into the dorsal skinfold chamber of BALB/c-mice...
June 19, 2017: Clinical & Experimental Metastasis
https://www.readbyqxmd.com/read/28631245/hypoxia-and-inflammation-in-the-release-of-vegf-and-interleukins-from-human-retinal-pigment-epithelial-cells
#10
Olli Arjamaa, Vesa Aaltonen, Niina Piippo, Tamás Csont, Goran Petrovski, Kai Kaarniranta, Anu Kauppinen
PURPOSE: Retinal diseases are closely associated with both decreased oxygenation and increased inflammation. It is not known if hypoxia-induced vascular endothelial growth factor (VEGF) expression in the retina itself evokes inflammation, or whether inflammation is a prerequisite for the development of neovascularization. METHODS: Human ARPE-19 cell line and primary human retinal pigment epithelium (RPE) cells were used. ARPE-19 cells were kept either under normoxic (24 h or 48 h) or hypoxic conditions (1% O2, 24 h)...
June 19, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28630947/evolution-of-geographic-atrophy-in-participants-treated-with-ranibizumab-for-neovascular-age-related-macular-degeneration
#11
Alisa T Thavikulwat, Naima Jacobs-El, Jane S Kim, Elvira Agrón, Jesia Hasan, Catherine B Meyerle, David Valent, Catherine A Cukras, Henry E Wiley, Wai T Wong, Emily Y Chew
PURPOSE: To evaluate the risk factors, incidence, and rate of progression of geographic atrophy (GA) in eyes with neovascular age-related macular degeneration (nAMD) treated with ranibizumab. DESIGN: Post-hoc analysis of a prospective clinical study. PARTICIPANTS: 69 participants with nAMD in at least one eye. METHODS: Participants were prospectively treated in the study eye with 0.5 mg intravitreal ranibizumab. Study eyes received 4 monthly injections followed by pro re nata injections until a fluid-free macula was achieved on optical coherence tomography...
January 2017: Ophthalmology retina
https://www.readbyqxmd.com/read/28630789/efficacy-of-intravitreal-bevacizumab-in-treatment-of-proliferative-type-2-idiopathic-juxtafoveal-telangiectasia
#12
Ökkeş Baz, İhsan Yılmaz, Cengiz Alagöz, Ali Demircan, İrfan Perente, Abdullah Özkaya, Muhittin Taşkapılı
OBJECTIVES: To evaluate the effectiveness of intravitreal bevacizumab (IVB) in patients with subretinal neovascularization secondary to type 2 juxtafoveal telangiectasia. MATERIALS AND METHODS: Ten eyes of 10 patients were included in this retrospective study. All cases were treated with IVB (1.25 mg bevacizumab). Visual acuity and slit-lamp anterior and posterior segment examinations were performed at each visit. Central macular thickness (CMT) and intraretinal/subretinal fluid were evaluated via spectral domain optical coherence tomography (OCT)...
June 2017: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/28630787/evaluation-of-aflibercept-treatment-responses-in-eyes-with-bevacizumab-ranibizumab-resistant-wet-age-related-macular-degeneration
#13
Tuncay Topal, Taner Kar, Yıldıray Yıldırım, Sercan Koray Sağdıç, Cihan Büyükavşar, Abdullah Kaya, Ali Ayata, Murat Sönmez, Melih Hamdi Ünal
OBJECTIVES: To evaluate anatomic and functional results after switching from intravitreal bevacizumab or ranibizumab treatment to aflibercept for wet (neovascular) age-related macular degeneration. MATERIALS AND METHODS: This retrospective study included 22 eyes of 22 patients resistant to treatment with at least 6 injections of bevacizumab or ranibizumab. The first three injections had been applied monthly, the others pro re nata (PRN). Outcome measures were follow-up period, injection number, best corrected visual acuity (BCVA), central retinal thickness (CRT) and pigment epithelial detachment (PED) height...
June 2017: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/28629694/interleukin-6-participation-in-pathology-of-ocular-diseases
#14
REVIEW
Forouhe Zahir-Jouzdani, Fatemeh Atyabi, Nazanin Mojtabavi
Interleukin-6 (IL-6) is a multifunctional cytokine that affects a variety of cells in the body such as osteoclasts, hepatocytes, endothelial cells, epithelial cells, white and red blood cells and etc. Elevated levels of IL-6 have been detected in many ocular diseases. Studies show that IL-6 has a major role in the pathology of glaucoma, CRVO, macular edema, ocular neovascularization, posterior capsule opacity formation, keratitis, dry eye disease, allergic eye disease, ocular autoimmune disease, corneal chemical burn, ocular inflammation and so on...
June 10, 2017: Pathophysiology: the Official Journal of the International Society for Pathophysiology
https://www.readbyqxmd.com/read/28629427/targeting-vegfr-3-2-signaling-pathways-with-ad0157-a-potential-strategy-against-tumor-associated-lymphangiogenesis-and-lymphatic-metastases
#15
Melissa García-Caballero, Jenny Paupert, Silvia Blacher, Maureen Van de Velde, Ana Rodríguez Quesada, Miguel Angel Medina, Agnès Noël
BACKGROUND: Lymphatic metastasis is one of the leading causes of death in patients with different types of cancer and is the main prognostic factor for the disease survival. The formation of new lymphatic vessels (lymphangiogenesis) in primary tumors facilitates tumor cell dissemination to regional lymph nodes and correlates with distant metastases. Lymphangiogenesis has thus emerged as a suitable therapeutic target to block metastases, but no anti-lymphangiogenic compounds have been approved for clinical use to date...
June 19, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28628933/early-markers-of-angiogenesis-and-ischemia-during-bowel-conduit-neovascularization
#16
Oscar J Manrique, Pedro Ciudad, Alex Wong, Federico Lo Torto, Yun-Fen Li, Pei-Yu Chen, Doan-Minh Nguyen, Hung-Chi Chen
No abstract text is available yet for this article.
June 19, 2017: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/28627981/early-vitrectomy-for-dense-vitreous-hemorrhage-in-adults-with-non-traumatic-and-non-diabetic-retinopathy
#17
Ting Zhang, Jingjing Zhang, Xiaolei Sun, Jingyi Tian, Weiyun Shi, Gongqiang Yuan
Objective To evaluate the etiologies for dense vitreous hemorrhage in adults with non-traumatic and reveal management of early vitrectomy for the disease. Methods Study included 105 eyes from 105 patients. Outcome measures were etiologies of vitreous hemorrhage, formation of retinal and/or disk neovascular membrane (NVM), incidence of retinal tear and detachment, visual acuity (VA) and postoperative complications. Results Mean time between presentation and surgery was 7.1 days. The most common etiologies were retinal vein occlusion (RVO) (58...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28627676/luteolin-inhibits-angiogenesis-by-blocking-gas6-axl-signaling-pathway
#18
Xiaobo Li, Minfeng Chen, Xueping Lei, Maohua Huang, Wencai Ye, Rijia Zhang, Dongmei Zhang
Growth arrest-specific protein 6 (Gas6) induces the activation of Axl receptor tyrosine kinase (Axl), which plays an important role in angiogenic processes, including proliferation, migration, invasion, tube formation and pericyte recruitment of endothelial cells. The inhibition of Gas6/Axl pathway has been demonstrated to be an effective anti-angiogenic therapy. Luteolin, which is a natural active flavonoid, has been reported to possess anti-angiogenic effects. However, the underlying mechanism of luteolin in anti-angiogenesis is not fully understood...
June 13, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28627621/identification-of-different-macrophage-subpopulations-with-distinct-activities-in-a-mouse-model-of-oxygen-induced-retinopathy
#19
Yanji Zhu, Ling Zhang, Qing Lu, Yushuo Gao, Yujuan Cai, Ailing Sui, Ting Su, Xi Shen, Bing Xie
The aim of the present study was to characterize the phenotypic shift, quantity and role changes in different subgroups of retinal macrophages in a mouse model of oxygen-induced retinopathy (OIR). The mRNA expression levels of macrophage M1 and M2 subgroup marker genes and polarization-associated genes were analyzed by RT-qPCR. The number of M1 and M2 macrophages in our mouse model of OIR was analyzed by flow cytometry at different time points during the progression of OIR. Immunofluorescence whole mount staining of the retinas of mice with OIR was performed at different time points to examine the influx of macrophages, as well as the morphological characteristics and roles of M1 and M2 macrophages...
June 13, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28626417/spironolactone-as-an-adjunctive-treatment-in-neovascular-age-related-macular-degeneration
#20
Kapil G Kapoor, Jennifer Sim
Neovascular age-related macular degeneration (AMD) is a potentially sight-threatening condition. The current standard-of-care treatment regimen is serial intravitreal antivascular endothelial growth factor injections. While these typically have great success, they do carry exceptional treatment burden on the patient, cost burden due to their required frequency of use, and the risk of endophthalmitis, which can be devastating. This case report explores an alternative potential option as a treatment adjunct for neovascular AMD (nAMD), and identifies some of the overlap between nAMD and central serous chorioretionpathy...
May 2017: Case Reports in Ophthalmology
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