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diabetic neural changes

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https://www.readbyqxmd.com/read/29761600/loss-of-angiotensin-converting-enzyme-2-exacerbates-diabetic-retinopathy-by-promoting-bone-marrow-dysfunction
#1
Yaqian Duan, Eleni Beli, Sergio Li Calzi, Judith L Quigley, Rehae C Miller, Leni Moldovan, Dongni Feng, Tatiana E Salazar, Sugata Hazra, Jude Al-Sabah, Kakarla V Chalam, Thao Le Phuong Trinh, Marya Meroueh, Troy A Markel, Matthew C Murray, Ruchi J Vyas, Michael E Boulton, Patricia Parsons-Wingerter, Gavin Y Oudit, Alexander G Obukhov, Maria B Grant
Angiotensin-converting enzyme 2 (ACE2) is the primary enzyme of the vasoprotective axis of the renin angiotensin system (RAS). We tested the hypothesis that loss of ACE2 would exacerbate diabetic retinopathy by promoting bone marrow dysfunction. ACE2-/y were crossed with Akita mice, a model of type 1 diabetes. When comparing the bone marrow of the ACE2-/y -Akita mice to that of Akita mice, we observed a reduction of both short-term and long-term repopulating hematopoietic stem cells, a shift of hematopoiesis towards myelopoiesis, and an impairment of lineage- c-kit+ hematopoietic stem/progenitor cell (HS/PC) migration and proliferation...
May 15, 2018: Stem Cells
https://www.readbyqxmd.com/read/29757338/automated-segmentation-of-the-choroid-in-edi-oct-images-with-retinal-pathology-using-convolution-neural-networks
#2
Min Chen, Jiancong Wang, Ipek Oguz, Brian L VanderBeek, James C Gee
The choroid plays a critical role in maintaining the portions of the eye responsible for vision. Specific alterations in the choroid have been associated with several disease states, including age-related macular degeneration (AMD), central serous choroiretinopathy, retinitis pigmentosa and diabetes. In addition, choroid thickness measures have been shown as a predictive biomarker for treatment response and visual function. Where several approaches currently exist for segmenting the choroid in optical coherence tomography (OCT) images of healthy retina, very few are capable of addressing images with retinal pathology...
September 2017: Fetal, infant and ophthalmic medical image analysis: International Workshop, FIFI 2017, and 4th International Workshop, OMIA 2017, held in conjunction with MICCAI 2017, Québec City, QC, Canada, September 14, Proceedings
https://www.readbyqxmd.com/read/29733843/modulation-of-nuclear-factor-%C3%AE%C2%BAb-signaling-and-reduction-of-neural-tube-defects-by-quercetin-3-glucoside-in-embryos-of-diabetic-mice
#3
Chengyu Tan, Fantong Meng, E Albert Reece, Zhiyong Zhao
BACKGROUND: Diabetes mellitus in early pregnancy increases the risk of birth defects in infants. Maternal hyperglycemia stimulates the expression of nitric oxide (NO) synthase 2 (NOS2), which can be regulated by transcription factors of the nuclear factor-κB (NF-κB) family. Increases in reactive nitrogen species (RNS) generate intracellular stress conditions, including nitrosative, oxidative, and endoplasmic reticulum (ER) stresses, and trigger programmed cell death (or apoptosis) in the neural folds, resulting in neural tube defects (NTDs) in the embryo...
May 4, 2018: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29728993/the-crosstalk-of-gut-microbiota-and-chronic-kidney-disease-role-of-inflammation-proteinuria-hypertension-and-diabetes-mellitus
#4
REVIEW
Mehmet Kanbay, Emine M Onal, Baris Afsar, Tuncay Dagel, Aslihan Yerlikaya, Adrian Covic, Nosratola D Vaziri
Chronic kidney disease (CKD) has been shown to result in profound changes in the composition and functions of the gut microbial flora which by disrupting intestinal epithelial barrier and generating toxic by-products contributes to systemic inflammation and the associated complications. On the other hand, emerging evidence points to the role of the gut microbiota in the development and progression of CKD by provoking inflammation, proteinuria, hypertension, and diabetes. These observations demonstrate the causal interconnection between the gut microbial dysbiosis and CKD...
May 4, 2018: International Urology and Nephrology
https://www.readbyqxmd.com/read/29717657/bone-marrow-cd133-stem-cells-ameliorate-visual-dysfunction-in-streptozotocin-induced-diabetic-mice-with-early-diabetic-retinopathy
#5
Liyuan Rong, Xianliang Gu, Jing Xie, Yuxiao Zeng, Qiyou Li, Siyu Chen, Ting Zou, Langyue Xue, Haiwei Xu, Zheng Qin Yin
Diabetic retinopathy (DR), one of the leading causes of vision loss worldwide, is characterized by neurovascular disorders. Emerging evidence has demonstrated retinal neurodegeneration in the early pathogenesis of DR, and no treatment has been developed to prevent the early neurodegenerative changes that precede detectable microvascular disorders. Bone marrow CD133+ stem cells with revascularization properties exhibit neuroregenerative potential. However, whether CD133+ cells can ameliorate the neurodegeneration at the early stage of DR remains unclear...
January 1, 2018: Cell Transplantation
https://www.readbyqxmd.com/read/29712667/restructuring-of-the-gut-microbiome-by-intermittent-fasting-prevents-retinopathy-and-prolongs-survival-in-db-db-mice
#6
Eleni Beli, Yuanqing Yan, Leni Moldovan, Cristiano P Vieira, Ruli Gao, Yaqian Duan, Ram Prasad, Ashay Bhatwadekar, Fletcher A White, Steven Townsend, Luisa Chan, Caitlin N Ryan, Daniel Morton, Emil G Moldovan, Fang-I Chu, Gavin Y Oudit, Hartmut Derendorf, Luciano Adorini, Xiaoxin X Wang, Carmella Evans-Molina, Raghavendra G Mirmira, Michael E Boulton, Mervin C Yoder, Qiuhong Li, Moshe Levi, Julia V Busik, Maria B Grant
Intermittent fasting (IF) protects against the development of metabolic diseases and cancer, but whether it can prevent diabetic microvascular complications is not known. In db/db mice, we examined the impact of long-term IF on diabetic retinopathy (DR). Despite no change in glycated hemoglobin, db/db mice on the IF regimen displayed significantly longer survival and a reduction in DR endpoints, including acellular capillaries and leukocyte infiltration. We hypothesized that IF mediated changes in the gut microbiota would produce beneficial metabolites and prevent the development of DR...
April 30, 2018: Diabetes
https://www.readbyqxmd.com/read/29704860/morphological-and-genetical-changes-of-endothelial-progenitor-cells-after-in-vitro-conversion-into-photoreceptors
#7
Shi Qiang, Hiba Amer Alsaeedi, Cheng Yuhong, Hao Yang, Li Tong, Suresh Kumar, Akon Higuchi, Abdullah A Alarfaj, Rusheni Munisvaradass, Mok Pooi Ling, Pei Cheng
BACKGROUND: Retinal degeneration is a condition ensued by various ocular disorders such as artery occlusion, diabetic retinopathy, retrolental fibroplasia and retinitis pigmentosa which cause abnormal loss of photoreceptor cells and lead to eventual vision impairment. No efficient treatment has yet been found, however, the use of stem cell therapy such as bone marrow and embryonic stem cells has opened a new treatment modality for retinal degenerative diseases. The major goal of this study is to analyze the potential of endothelial progenitor cells derived from bone marrow to differentiate into retinal neural cells for regenerative medicine purposes...
April 6, 2018: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29675980/longitudinal-assessment-of-hippocampus-structure-in-children-with-type-1-diabetes
#8
Lara C Foland-Ross, Allan L Reiss, Paul K Mazaika, Nelly Mauras, Stuart A Weinzimer, Tandy Aye, Michael J Tansey, Neil H White
The extant literature finds that children with type 1 diabetes (T1D) experience mild cognitive alterations compared to healthy age-matched controls. The neural basis of these cognitive differences is unclear but may relate in part to the effects of dysglycemia on the developing brain. We investigated longitudinal changes in hippocampus volume in young children with early-onset T1D. Structural magnetic resonance imaging data were acquired from 142 children with T1D and 65 age-matched control subjects (4-10 years of age at study entry) at two time points, 18 months apart...
April 19, 2018: Pediatric Diabetes
https://www.readbyqxmd.com/read/29652832/sympathetic-nerve-hyperactivity-in-the-spleen-causal-for-nonpathogenic-driven-chronic-immune-mediated-inflammatory-diseases-imids
#9
REVIEW
Denise L Bellinger, Dianne Lorton
Immune-Mediated Inflammatory Diseases (IMIDs) is a descriptive term coined for an eclectic group of diseases or conditions that share common inflammatory pathways, and for which there is no definitive etiology. IMIDs affect the elderly most severely, with many older individuals having two or more IMIDs. These diseases include, but are not limited to, type-1 diabetes, obesity, hypertension, chronic pulmonary disease, coronary heart disease, inflammatory bowel disease, and autoimmunity, such as rheumatoid arthritis (RA), Sjőgren's syndrome, systemic lupus erythematosus, psoriasis, psoriatic arthritis, and multiple sclerosis...
April 13, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29621304/trends-in-congenital-anomalies-in-europe-from-1980-to-2012
#10
Joan K Morris, Anna L Springett, Ruth Greenlees, Maria Loane, Marie-Claude Addor, Larraitz Arriola, Ingeborg Barisic, Jorieke E H Bergman, Melinda Csaky-Szunyogh, Carlos Dias, Elizabeth S Draper, Ester Garne, Miriam Gatt, Babak Khoshnood, Kari Klungsoyr, Catherine Lynch, Robert McDonnell, Vera Nelen, Amanda J Neville, Mary O'Mahony, Anna Pierini, Annette Queisser-Luft, Hanitra Randrianaivo, Judith Rankin, Anke Rissmann, Jennifer Kurinczuk, David Tucker, Christine Verellen-Dumoulin, Diana Wellesley, Helen Dolk
BACKGROUND: Surveillance of congenital anomalies is important to identify potential teratogens. METHODS: This study analysed the prevalence of 61 congenital anomaly subgroups (excluding chromosomal) in 25 population-based EUROCAT registries (1980-2012). Live births, fetal deaths and terminations of pregnancy for fetal anomaly were analysed with multilevel random-effects Poisson regression models. RESULTS: Seventeen anomaly subgroups had statistically significant trends from 2003-2012; 12 increasing and 5 decreasing...
2018: PloS One
https://www.readbyqxmd.com/read/29575331/retrospective-case-series-on-the-treatment-of-painful-diabetic-peripheral-neuropathy-with-dorsal-root-ganglion-stimulation
#11
Sam Eldabe, Anthony Espinet, Anders Wahlstedt, Porhan Kang, Liong Liem, Nikunj K Patel, Jan Vesper, Alicia Kimber, William Cusack, Jeffery Kramer
BACKGROUND: The dorsal root ganglion (DRG) has been identified as an important neural structure in the development and maintenance of chronic pain. We present a retrospective case series of patients with refractory painful diabetic peripheral neuropathy (PDPN) that underwent electrical stimulation of the DRG and report on changes in their overall perceived pain and complication rates. METHODS: Ten diabetic males (mean age 65.2 [SD 8.8] years) with painful symptoms of the lower limbs were enrolled and trialed with up to four quadripolar percutaneous DRG stimulation leads between L2 and L5 spinal levels...
March 25, 2018: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/29493356/a-neural-network-based-approach-to-personalize-insulin-bolus-calculation-using-continuous-glucose-monitoring
#12
Giacomo Cappon, Martina Vettoretti, Francesca Marturano, Andrea Facchinetti, Giovanni Sparacino
BACKGROUND: In type 1 diabetes (T1D) therapy, the calculation of the meal insulin bolus is performed according to a standard formula (SF) exploiting carbohydrate intake, carbohydrate-to-insulin ratio, correction factor, insulin on board, and target glucose. Recently, some approaches were proposed to account for preprandial glucose rate of change (ROC) in the SF, including those by Scheiner and by Pettus and Edelman. Here, the aim is to develop a new approach, based on neural networks (NN), to optimize and personalize the bolus calculation using continuous glucose monitoring information and some easily accessible patient parameters...
March 2018: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/29488254/quantitative-evaluation-of-early-retinal-changes-in-children-with-type-1-diabetes-mellitus-without-retinopathy
#13
Kemal Tekin, Merve Inanc, Erdal Kurnaz, Elvan Bayramoglu, Emre Aydemir, Mustafa Koc, Hasan Kiziltoprak, Zehra Aycan
BACKGROUND: To investigate whether abnormal glucose metabolism and duration of diabetes mellitus (DM) caused the thinning in retinal layers in children with type 1 DM without retinopathy by using spectral domain optical coherence tomography (SD-OCT) and to compare the results obtained with those in healthy children. METHODS: This cross-sectional prospective study included 73 patients with type 1 DM (DM group) and 62 age-matched control subjects (control group). The duration of DM and the glycosylated haemoglobin (HbA1c) levels of the diabetic children were recorded...
February 28, 2018: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/29487115/fibroblast-growth-factor-21-protects-photoreceptor-function-in-type-1-diabetic-mice
#14
Zhongjie Fu, Zhongxiao Wang, Chi-Hsiu Liu, Yan Gong, Bertan Cakir, Raffael Liegl, Ye Sun, Steven S Meng, Samuel B Burnim, Ivana Arellano, Elizabeth Moran, Rubi Duran, Alexander Poblete, Steve S Cho, Saswata Talukdar, James D Akula, Ann Hellström, Lois E H Smith
Retinal neuronal abnormalities occur before vascular changes in diabetic retinopathy. Accumulating experimental evidence suggests that neurons control vascular pathology in diabetic and other neovascular retinal diseases. Therefore, normalizing neuronal activity in diabetes may prevent vascular pathology. We investigated whether fibroblast growth factor 21 (FGF21) prevented retinal neuronal dysfunction in insulin-deficient diabetic mice. We found that in diabetic neural retina, photoreceptor rather than inner retinal function was most affected and administration of the long-acting FGF21 analog PF-05231023 restored the retinal neuronal functional deficits detected by electroretinography...
May 2018: Diabetes
https://www.readbyqxmd.com/read/29391542/multi-radial-lbp-features-as-a-tool-for-rapid-glomerular-detection-and-assessment-in-whole-slide-histopathology-images
#15
Olivier Simon, Rabi Yacoub, Sanjay Jain, John E Tomaszewski, Pinaki Sarder
We demonstrate a simple and effective automated method for the localization of glomeruli in large (~1 gigapixel) histopathological whole-slide images (WSIs) of thin renal tissue sections and biopsies, using an adaptation of the well-known local binary patterns (LBP) image feature vector to train a support vector machine (SVM) model. Our method offers high precision (>90%) and reasonable recall (>70%) for glomeruli from WSIs, is readily adaptable to glomeruli from multiple species, including mouse, rat, and human, and is robust to diverse slide staining methods...
February 1, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29381484/hypoglycemia-unawareness-in-type-1-diabetes-suppresses-brain-responses-to-hypoglycemia
#16
Janice Jin Hwang, Lisa Parikh, Cheryl Lacadie, Dongju Seo, Wai Lam, Muhammad Hamza, Christian Schmidt, Feng Dai, Anne-Sophie Sejling, Renata Belfort-DeAguiar, R Todd Constable, Rajita Sinha, Robert Sherwin
BACKGROUND: Among nondiabetic individuals, mild glucose decrements alter brain activity in regions linked to reward, motivation, and executive control. Whether these effects differ in type 1 diabetes mellitus (T1DM) patients with and without hypoglycemia awareness remains unclear. METHODS: Forty-two individuals (13 healthy control [HC] subjects, 16 T1DM individuals with hypoglycemia awareness [T1DM-Aware], and 13 T1DM individuals with hypoglycemia unawareness [T1DM-Unaware]) underwent blood oxygen level-dependent functional MRI brain imaging during a 2-step hyperinsulinemic euglycemic (90 mg/dl)-hypoglycemic (60 mg/dl) clamp for assessment of neural responses to mild hypoglycemia...
April 2, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29378901/gut-as-an-emerging-organ-for-the-treatment-of-diabetes-focus-on-mechanism-of-action-of-bariatric-and-endoscopic-interventions
#17
REVIEW
Martin Haluzík, Helena Kratochvílová, Denisa Haluzíková, Miloš Mráz
Increasing worldwide prevalence of type 2 diabetes mellitus and its accompanying pathologies such as obesity, arterial hypertension and dyslipidemia represents one of the most important challenges of current medicine. Despite intensive efforts, high percentage of patients with type 2 diabetes does not achieve treatment goals and struggle with increasing body weight and poor glucose control. While novel classes of antidiabetic medications such as incretin-based therapies and gliflozins have some favorable characteristics compared to older antidiabetics, the only therapeutic option shown to substantially modify the progression of diabetes or to achieve its remission is bariatric surgery...
April 2018: Journal of Endocrinology
https://www.readbyqxmd.com/read/29372250/approach-for-a-clinically-useful-comprehensive-classification-of-vascular-and-neural-aspects-of-diabetic-retinal-disease
#18
Michael D Abramoff, Patrice E Fort, Ian C Han, K Thiran Jayasundera, Elliott H Sohn, Thomas W Gardner
The Early Treatment Diabetic Retinopathy Study (ETDRS) and other standardized classification schemes have laid a foundation for tremendous advances in the understanding and management of diabetic retinopathy (DR). However, technological advances in optics and image analysis, especially optical coherence tomography (OCT), OCT angiography (OCTa), and ultra-widefield imaging, as well as new discoveries in diabetic retinal neuropathy (DRN), are exposing the limitations of ETDRS and other classification systems to completely characterize retinal changes in diabetes, which we term diabetic retinal disease (DRD)...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29279426/-central-regulation-of-appetite-and-energy-metabolism
#19
Yasuhiko Minokoshi
Recent advances of neuroscience shed a light in the neural pathway and mechanisms for food intake regulation. The central nervous system(CNS)has also been recognized as a crucial organ to regulate metabolism in peripheral tissues. This includes the increase in glucose and fatty acid utilization in skeletal muscle as well as in brown adipose tissue and the heart, improving type 1 diabetes without change in insulin secretion. CNS regulation for food intake and energy metabolism is important to understand the mechanism for homeostatic regulation in living body...
2018: Clinical Calcium
https://www.readbyqxmd.com/read/29258552/effects-of-stevia-on-synaptic-plasticity-and-nadph-oxidase-level-of-cns-in-conditions-of-metabolic-disorders-caused-by-fructose
#20
V A Chavushyan, K V Simonyan, R M Simonyan, A S Isoyan, G M Simonyan, M A Babakhanyan, L E Hovhannisyian, Kh H Nahapetyan, L G Avetisyan, M A Simonyan
BACKGROUND: Excess dietary fructose intake associated with metabolic syndrome and insulin resistance and increased risk of developing type 2 diabetes. Previous animal studies have reported that diabetic animals have significantly impaired behavioural and cognitive functions, pathological synaptic function and impaired expression of glutamate receptors. Correction of the antioxidant status of laboratory rodents largely prevents the development of fructose-induced plurimetabolic changes in the nervous system...
December 19, 2017: BMC Complementary and Alternative Medicine
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