Some features of organism response on local administration of reactive oxygen

2015 ◽  
Vol 9 (4) ◽  
pp. 0-0
Author(s):  
Перетягин ◽  
P. Peretyagin ◽  
Ковалева ◽  
L. Kovaleva ◽  
Перетягин ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Wistar Rats ◽  
Reactive Oxygen ◽  
Local Administration ◽  
Oxygen Species ◽  
Animal Tissues ◽  
Local Effects ◽  
Doppler Flowmetry ◽  
Fourth Group ◽  
Made In

The purpose of this work is the study of microcirculation state at different local effects of reactive oxygen species on animal tissues. The experiment was performed on 60 healthy white Wistar rats. Control group (without any manipulations) included 20 Wistar rats. Also 4 main groups were formed (10 rats in each). Rats of the first group (n=10) were intracutaneously injected with 1 ml of oxygen (in the back), a local darsonvalization during 4 min. was carried out in animals of the second group (n=10). In third group (n=10) the injection of 1 ml of oxygen-ozone mixture was made, in the fourth group (n=10) - darsonvalization during 4 min. after a preliminary introduction of oxygen (1 ml). Microcirculation parameters were tested by laser Doppler flowmetry with LAKK-02 device. It was defined, that local effects of reactive oxygen species include microcirculation changes, depending from specialties of exposed factor.

The antioxidant effect of mulberry and jamun fruit wines by ameliorating oxidative stress in streptozotocin-induced diabetic Wistar rats

2016 ◽  
Vol 7 (10) ◽  
pp. 4422-4431 ◽  
Author(s):  
Akshatha Hosahalli Srikanta ◽  
Anbarasu Kumar ◽  
Shinde Vijay Sukhdeo ◽  
Muthukumar Serva Peddha ◽  
Vijayalakshmi Govindaswamy
Keyword(s):  
Oxidative Stress ◽  
Reactive Oxygen Species ◽  
Wistar Rats ◽  
Metabolic Disorders ◽  
Reactive Oxygen ◽  
Antioxidant Effect ◽  
Oxygen Species

Polyphenols act by scavenging reactive oxygen species during oxidative stress and hence are useful in the treatment of metabolic disorders including diabetes.

scholarly journals NADPH oxidase-derived reactive oxygen species contribute to impaired cutaneous microvascular function in chronic kidney disease

2014 ◽  
Vol 306 (12) ◽  
pp. F1499-F1506 ◽  
Author(s):  
Jennifer J. DuPont ◽  
Meghan G. Ramick ◽  
William B. Farquhar ◽  
Raymond R. Townsend ◽  
David G. Edwards
Keyword(s):  
Reactive Oxygen Species ◽  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Nadph Oxidase ◽  
Xanthine Oxidase ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Doppler Flowmetry ◽  
Cutaneous Vasodilation ◽  
Oxidase Inhibition

Oxidative stress promotes vascular dysfunction in chronic kidney disease (CKD). We utilized the cutaneous circulation to test the hypothesis that reactive oxygen species derived from NADPH oxidase and xanthine oxidase impair nitric oxide (NO)-dependent cutaneous vasodilation in CKD. Twenty subjects, 10 stage 3 and 4 patients with CKD (61 ± 4 yr; 5 men/5 women; eGFR: 39 ± 4 ml·min−1·1.73 m−2) and 10 healthy controls (55 ± 2 yr; 4 men/6 women; eGFR: >60 ml·min−1·1.73 m−2) were instrumented with 4 intradermal microdialysis fibers for the delivery of 1) Ringer solution (Control), 2) 10 μM tempol (scavenge superoxide), 3) 100 μM apocynin (NAD(P)H oxidase inhibition), and 4) 10 μM allopurinol (xanthine oxidase inhibition). Skin blood flow was measured via laser-Doppler flowmetry during standardized local heating (42°C). Ng-nitro-l-arginine methyl ester (l-NAME; 10 mM) was infused to quantify the NO-dependent portion of the response. Cutaneous vascular conductance (CVC) was calculated as a percentage of the maximum CVC achieved during sodium nitroprusside infusion at 43°C. Cutaneous vasodilation was attenuated in patients with CKD (77 ± 3 vs. 88 ± 3%, P = 0.01), but augmented with tempol and apocynin (tempol: 88 ± 2 ( P = 0.03), apocynin: 91 ± 2% ( P = 0.001). The NO-dependent portion of the response was reduced in patients with CKD (41 ± 4 vs. 58 ± 2%, P = 0.04), but improved with tempol and apocynin (tempol: 58 ± 3 ( P = 0.03), apocynin: 58 ± 4% ( P = 0.03). Inhibition of xanthine oxidase did not alter cutaneous vasodilation in either group ( P > 0.05). These data suggest that NAD(P)H oxidase is a source of reactive oxygen species and contributes to microvascular dysfunction in patients with CKD.

scholarly journals Effects of reactive oxygen species on renal tubular transport

2019 ◽  
Vol 317 (2) ◽  
pp. F444-F455 ◽  
Author(s):  
Agustin Gonzalez-Vicente ◽  
Nancy Hong ◽  
Jeffrey L. Garvin
Keyword(s):  
Reactive Oxygen Species ◽  
Collecting Duct ◽  
Critical Role ◽  
Reactive Oxygen ◽  
Thick Ascending Limb ◽  
Oxygen Species ◽  
Renal Tubular Transport ◽  
Regulation Of Transport ◽  
Renal Tubular ◽  
Made In

Reactive oxygen species (ROS) play a critical role in regulating nephron transport both via transcellular and paracellular pathways under physiological and pathological circumstances. Here, we review the progress made in the past ~10 yr in understanding how ROS regulate solute and water transport in individual nephron segments. Our knowledge in this field is still rudimentary, with basic information lacking. This is most obvious when looking at the reported disparate effects of superoxide ([Formula: see text]) and H2O2 on proximal nephron transport, where there are no easy explanations as to how to reconcile the data. Similarly, we know almost nothing about the regulation of transport in thin descending and ascending limbs, information that is likely critical to understanding the urine concentrating mechanism. In the thick ascending limb, there is general agreement that ROS enhance transcellular reabsorption of NaCl, but we know very little about their effects on the paracellular pathway and therefore Ca2+ and Mg2+ transport. In the distal convoluted tubule, precious little is known. In the collecting duct, there is general agreement that ROS stimulate the epithelial Na+ channel.

scholarly journals Control of Insulin Secretion by Production of Reactive Oxygen Species: Study Performed in Pancreatic Islets from Fed and 48-Hour Fasted Wistar Rats

PLoS ONE ◽  
2016 ◽  
Vol 11 (6) ◽  
pp. e0158166 ◽  
Author(s):  
Ana Cláudia Munhoz ◽  
Patrícia Riva ◽  
Daniel Simões ◽  
Rui Curi ◽  
Angelo Rafael Carpinelli
Keyword(s):  
Reactive Oxygen Species ◽  
Insulin Secretion ◽  
Pancreatic Islets ◽  
Wistar Rats ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Species Study

scholarly journals Virus Mimetic Poly (I:C)-Primed Airway Exosome-like Particles Enter Brain and Induce Inflammatory Cytokines and Mitochondrial Reactive Oxygen Species in Microglia

Biology ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1359
Author(s):  
Deimantė Kulakauskienė ◽  
Deimantė Narauskaitė ◽  
Dovydas Gečys ◽  
Otilija Juknaitė ◽  
Lina Jankauskaitė ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Wistar Rats ◽  
Reactive Oxygen ◽  
Microglial Cells ◽  
Poly I:C ◽  
Inflammatory Factors ◽  
Oxygen Species ◽  
The Brain ◽  
Airway Cells

Viral infections induce extracellular vesicles (EVs) containing viral material and inflammatory factors. Exosomes can easily cross the blood-brain barrier during respiratory tract infection and transmit the inflammatory signal to the brain; however, such a hypothesis has no experimental evidence. The study investigated whether exosome-like vesicles (ELVs) from virus mimetic poly (I:C)-primed airway cells enter the brain and interact with brain immune cells microglia. Airway cells were isolated from Wistar rats and BALB/c mice; microglial cell cultures—from Wistar rats. ELVs from poly (I:C)-stimulated airway cell culture medium were isolated by precipitation, visualised by transmission electron microscopy, and evaluated by nanoparticle analyser; exosomal markers CD81 and CD9 were determined by ELISA. For in vitro and in vivo tracking, particles were loaded with Alexa Fluor 555-labelled RNA. Intracellular reactive oxygen species (ROS) were evaluated by DCFDA fluorescence and mitochondrial superoxide—by MitoSOX. ELVs from poly (I:C)-primed airway cells entered the brain within an hour after intranasal introduction, were internalised by microglia and induced intracellular and intramitochondrial ROS production. There was no ROS increase in microglial cells was after treatment with ELVs from airway cells untreated with poly (I:C). In addition, poly (I:C)-primed airway cells induced inflammatory cytokine expression in the brain. The data indicate that ELVs secreted by virus-primed airway cells might enter the brain, cause the activation of microglial cells and neuroinflammation.

scholarly journals Virus Mimetic Poly (I:C)-Primed Airway Exosomes Enter Brain and Induce Mitochondrial Reactive Oxygen Species in Microglia

2021 ◽  
Author(s):  
Deimantė Kulakauskienė ◽  
Deimantė Narauskaitė ◽  
Dovydas Gečys ◽  
Otilija Juknaitė ◽  
Lina Jankauskaitė ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Wistar Rats ◽  
Reactive Oxygen ◽  
Microglial Cells ◽  
Poly I:C ◽  
Inflammatory Factors ◽  
Oxygen Species ◽  
The Brain ◽  
Airway Cells

Viral infections induce exosomes containing viral material and inflammatory factors. During respiratory tract infection, exosomes can easily cross the blood-brain barrier and transmit the inflammatory signal to the brain; however, such a hypothesis has no experimental evidence. The study investigated whether exosomes from virus mimetic poly (I:C)-primed airway cells enter the brain and interact with brain immune cells microglia. Airway cells were isolated from Wistar rats and BALB/c mice; microglial cell cultures - from Wistar rats. Exosomes from poly (I:C)-stimulated airway cell culture medium were isolated by precipitation, visualised by transmission electron microscopy, and evaluated by nanoparticle analyser; exosomal markers CD81 and CD9 were determined by ELISA. For in vitro and in vivo tracking, exosomes were loaded with Alexa Fluor 555-labelled RNA. Intracellular reactive oxygen species (ROS) were evaluated by DCFDA fluo-rescence and mitochondrial superoxide - by MitoSOX. The exosomes from poly (I:C)-primed airway cells entered the brain within an hour after intranasal introduction, were internalised by microglia, and induced intracellular and intramitochondrial ROS production. There was no ROS increase in microglial cells was after treatment with exosomes from airway cells untreated with poly (I:C). The data indicate that virus-primed airway cell exosomes might enter the brain and induce the activation of microglial cells.

Ovariectomy and its Antioxidative Effect on Bone

2010 ◽  
Author(s):  
Durg V. Rai ◽  
Harcharan Singh Ranu
Keyword(s):  
Oxidative Stress ◽  
Reactive Oxygen Species ◽  
Free Radicals ◽  
Bone Loss ◽  
Wistar Rats ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Female Wistar Rats ◽  
The Impact

Ovarian hormone deficiency increases the generation of reactive oxygen species. Oxidative stress due to reactive oxygen species (ROS) can cause oxidative damage to cells. Cells have a number of defense mechanisms to protect themselves from the toxicity of ROS. There is increasing evidence of the role of free radicals in bone resorption and bone loss. Ovariectomised female wistar rats had been used as the animal model for the study of osteoporosis. Even though, there are studies portraying the role of free radicals in bone loss, the defense mechanism adapted by bone in ovariectomised animals remains obscure. So, the impact of ovariectomy on the bone antioxidant system in rats was investigated. Twenty female wistar rats were taken and divided into two groups: ovariectomised and control. It had been found that a significant (p<0.001) decrease in the activity of various enzymes like CAT (catalase), SOD (superoxide dismutase) (p<0.001), GST (glutathione-s-transferase). However, an increase in the malondialdehyde levels was found to be 30% in the ovariectomised rats as compared to the controls. Thus the study elucidates the oxidative stress in bone under ovariectomy.

scholarly journals Pengaruh madu terhadap kualitas spermatozoa tikus wistar (Rattus norvegicus) yang diberi paparan asap rokok

2016 ◽  
Vol 4 (2) ◽  
Author(s):  
Pretty P. Makasenda ◽  
Janette M. Rumbajan ◽  
Grace L.A. Turalaki
Keyword(s):  
Reactive Oxygen Species ◽  
Treatment Group ◽  
Cigarette Smoke ◽  
Rattus Norvegicus ◽  
Wistar Rats ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Significant Difference ◽  
Male Wistar Rats

Abstract: Cigarettes are composed of hazardous chemicals such as nicotine, tar and carbon monoxide (CO) to name a few. In just a single puff of a cigarette, there are 1014 free radical molecules also known as Reactive Oxygen Species (ROS) that can cause sperm damage. Various natural ingredients native to Indonesia were found to contain various antioxidants, one of them is honey. The effects of honey as antioxidant may protect body cells in neutralizing free radicals caused by smoking and reducing the damage to spermatozoa cell that is caused by ROS and thereby avoiding the declining quality of spermatozoa. This study aimed to determine the effect of honey on the quality of spermatozoa of Wistar rats (Rattus norvegicus) that had been exposed to cigarette smoke. Subjects of this study were nine male Wistar rats (Rattus norvegicus) randomly divided into three groups weighing 150-200 g with the age range of 12-14 weeks. Each group of mice was given exposure to the smoke of 2 cigarettes a day in which the treatment group (P1) is also given 0.5 ml of honey per day, and the treatment group (P2) honey 1 ml / day. The results showed that honey treatment can improve concentration, motility, and morphology of spermatozoa Wistar rats (Rattus norvegicus) by exposure to cigarrets smoke. Occurred a significant difference of concentration, motility, and morphology of spermatozoa group given only the exposure to cigarette smoke and the group given exposure to cigarette smoke and honey. This results showed that 1 ml of honey per day could improve the quality of spermatozoa.Keywords: honey, cigarrets smoke, spermatozoa Abstrak: Rokok mengandung bahan kimia yang berbahaya, yaitu nikotin, tar dan gas karbon monoksida (CO). Dalam satu kali hisapan rokok terdapat 1014 molekul radikal bebas atau Reactive Oxygen Species (ROS) yang dapat merusak spermatozoa. Berbagai bahan alam asli Indonesia banyak mengandung antioksidan, salah satunya pada madu. Efek madu sebagai antioksidan dapat melindungi sel-sel tubuh termasuk menetralisir radikal bebas yang disebabkan oleh rokok dan mengurangi kerusakan sel spermatozoa yang disebabkan oleh ROS sehingga menghindari menurunnya kualitas spermatozoa. Penelitian ini bertujuan untuk mengetahui pengaruh madu terhadap kualitas spermatozoa tikus wistar (Rattus norvegicus) yang diberi paparan asap rokok. Subjek penelitian ini menggunakan 9 ekor tikus wistar (Rattus norvegicus) jantan yang dibagi menjadi tiga kelompok secara acak dengan berat badan 150-200 gram dan berumur 12-14 minggu. Masing-masing kelompok tikus diberi paparan asap rokok 2 batang / hari dimana kelompok perlakuan (P1) juga diberi madu 0.5 ml / hari, dan kelompok perlakuan (P2) diberi madu 1 ml / hari. Hasil penelitian memperlihatkan bahwa pemberian madu dapat meningkatkan konsentrasi, motilitas, dan morfologi spermatozoa tikus wistar (Rattus norvegicus) yang diberi paparan asap rokok. Terjadi perbedaan yang bermakna dari konsentrasi, motilitas, dan morfologi spermatozoa kelompok yang hanya diberi paparan asap rokok dan kelompok yang diberi paparan asap rokok dan madu. Hasil tersebut menunjukan bahwa madu 1 ml / hari dapat meningkatkan kualitas spermatozoa. Kata kunci: madu, asap rokok, spermatozoa

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