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wound healing arginine

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https://www.readbyqxmd.com/read/29768370/a-case-report-of-neurological-complications-owing-to-lately-diagnosed-hyperargininemia-emphasizing-the-role-of-national-neonatal-screening-policies-in-the-kingdom-of-bahrain
#1
Moiz Bakhiet, Aminah M I AlAwadi, Maryam M AlHammadi, Maryam F Ali, Noora Butti
INTRODUCTION: Arginine is an essential amino acid that plays an important role in various body functions including cell division, wound healing, removal of ammonia, immune function, and release of hormones. Hyperargininemia, an autosomal recessive genetic disorder, is considered one of the least common urea cycle disorders. It rarely presents in the neonatal period but rather appears in children at the age between 2 and 4 years. CASE PRESENTATION: Herein, we demonstrate a case of a 14-year-old female who presented to the neurology clinic with several neurological complications, which were found to be a consequence of high levels of arginine discovered after performing a metabolic screening test...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29743767/pressure-ulcer-and-nutrition
#2
REVIEW
Seied Hadi Saghaleini, Kasra Dehghan, Kamran Shadvar, Sarvin Sanaie, Ata Mahmoodpoor, Zohreh Ostadi
Pressure ulcers can diminish global life quality, contribute to rapid mortality in some patients and pose a significant cost to health-care organizations. Accordingly, their prevention and management are highly important. Nutritional deprivation and insufficient dietary intake are the key risk factors for the development of pressure ulcers and impaired wound healing. Unplanned weight loss is a major risk factor for malnutrition and pressure ulcer development. Suboptimal nutrition interferes with the function of the immune system, collagen synthesis, and tensile strength...
April 2018: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/29468968/arginine-functionalized-bacterial-cellulose-nanofibers-containing-gel-as-an-effective-wound-dressing-in-vitro-and-in-vivo-evaluation
#3
Farideh Feizabadi, Mohsan Minaiyan, Azade Taheri
BACKGROUND: Nanofibers such as bacterial cellulose nanofibers (BC-NFs) have gained increasing attention for use in wound dressings. Topical application of arginine can stimulate wound healing significantly. OBJECTIVE: In order to promote the wound healing process, arginine functionalized BC-NFs containing gel (Arg-BC-NFs gel) was prepared by the electrostatic attachment of arginine on the surface of BC-NFs. METHOD: The effect of pH was evaluated on the amount of the attached arginine on the BC-NFs surface...
February 19, 2018: Current Drug Delivery
https://www.readbyqxmd.com/read/29435056/furin-inhibitor-d6r-suppresses-epithelial-mesenchymal-transition-in-sw1990-and-patu8988-cells-via-the-hippo-yap-signaling-pathway
#4
Meng Zhou, Youli Zhang, Hong Wei, Junbo He, Dawei Wang, Baoding Chen, Jian Zeng, Aihua Gong, Min Xu
Hexa-D-arginine (D6R), an inhibitor of furin, has potential therapeutic applications in different types of human tumor. However, the function of D6R in targeting pancreatic cancer cells remains to be elucidated. In the present study, the proliferation, invasion and migration abilities of SW1990 and PaTu8988 cells were examined using a Cell Counting Kit-8, and Transwell and wound healing assays. Subsequently, the expression of proteins associated with epithelial-mesenchymal transition (EMT) and the Hippo-yes-associated protein (YAP) pathway were detected using western blot analysis...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29212068/activation-of-secretagogue-independent-gastric-acid-secretion-via-endothelial-nitric-oxide-synthase-stimulation-in-rats
#5
Alice Miriam Kitay, Alexander Link, John P Geibel
BACKGROUND/AIMS: L-arginine is an important mediator of cell division, wound healing, and immune function. It can be transformed by the nitric oxide synthase (NOS) to nitric oxide (NO), an important cell signaling molecule. Recent studies from our laboratory demonstrate specific effects of L-arginine (10mM) exposure on gastric acid secretion in rat parietal cells. METHODS: Studies were performed with isolated gastric glands and the pH sensitive dye BCECF-AM +/- L-arginine to examine its effects on acid secretion...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29159695/a-novel-lignin-based-nanofibrous-dressing-containing-arginine-for-wound-healing-applications
#6
Fatemeh Reesi, Mohsen Minaiyan, Azade Taheri
Nanofiber-based wound dressings have attracted much attention in wound care owing to their unique properties such as high aspect ratio and three-dimensional structure. Arginine is a precursor of nitric oxide that plays an important role in the wound-healing process. Therefore, in this study, we have developed a gel which contains lignin nanofibers (Lig-NFs) that were surface modified by arginine molecules via electrostatic interaction (Arg-Lig-NF gel). The effect of pH on the amount of arginine attached on Lig-NF surface was evaluated at three different pH values-5, 6, and 7...
February 2018: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/29119880/preparation-and-in-vivo-evaluation-of-a-novel-gel-based-wound-dressing-using-arginine-alginate-surface-modified-chitosan-nanofibers
#7
Mahsa Hoseinpour Najar, Mohsen Minaiyan, Azade Taheri
The development of an effective wound dressing with the ability to induce skin wound healing is a great challenge in medicine. Nanofibers are highly attractive for wound dressing preparation due to their properties such as hemostasis induction, good absorption of wound exudates, and facilitation of cell growth. Chitosan nanofibers have attracted great attention for application in wound dressings due to their accelerating effects on wound healing. In this study, arginine surface-modified chitosan nanofibers were successfully prepared by attachment of arginine molecules on the surface of chitosan nanofibers using sodium alginate through electrostatic interaction...
January 2018: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/28954469/proliferative-anti-apoptotic-and-immune-enhancing-effects-of-l-arginine-in-culture-of-skin-fibroblasts
#8
H Kocic, I Arsic, M Stankovic, D Tiodorovic, V Ciric, G Kocic
Semi-essential amino acid L-arginine may be of fundamental importance in various intracellular and intercellular pathways related to skin repair and wound healing. Our current study was aimed to explore the effect of L-arginine on skin fibroblast (L929) signaling pathways involved in cell proliferation (Akt-pAkt kinase, Erk/pErk1/2 kinase, JNK/pJNK kinase and pStat-1), apoptosis (Bcl2 and Bax) and immune defense (NF-κB and CD26). Significant upregulation of Erk (p<0.011), pErk (p<0.017) and JNK (p<0...
July 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28951595/astragaloside-ii-promotes-intestinal-epithelial-repair-by-enhancing-l-arginine-uptake-and-activating-the-mtor-pathway
#9
Shih-Yu Lee, Wei-Cheng Tsai, Jung-Chun Lin, Blerina Ahmetaj-Shala, Su-Feng Huang, Wen-Liang Chang, Tsu-Chung Chang
Astragaloside II (AS II) extracted from Astragalus membranaceus has been reported to promote tissue wound repair. However, the effect of AS II on inflammatory bowel disease is unknown. We investigated the effects and mechanism of AS II on intestinal wound healing in both in vitro and in vivo models. Human intestinal Caco-2 cells were treated with multiple concentrations of AS II to assess cell proliferation, scratch wound closure, L-arginine uptake, cationic amino acid transporter activity, and activation of the mTOR signaling pathway...
September 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28912361/impact-of-sleep-restriction-on-local-immune-response-and-skin-barrier-restoration-with-and-without-multinutrient-nutrition-intervention
#10
Tracey J Smith, Marques A Wilson, J Philip Karl, Jeb Orr, Carl D Smith, Adam D Cooper, Kristin J Heaton, Andrew J Young, Scott J Montain
Systemic immune function is impaired by sleep restriction. However, the impact of sleep restriction on local immune responses and to what extent any impairment can be mitigated by nutritional supplementation is unknown. We assessed the effect of 72-h sleep restriction (2-h nightly sleep) on local immune function and skin barrier restoration of an experimental wound, and determined the influence of habitual protein intake (1.5 g·kg-1 ·day-1 ) supplemented with arginine, glutamine, zinc sulfate, vitamin C, vitamin D3, and omega-3 fatty acids compared with lower protein intake (0...
January 1, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28867649/synthesis-and-characterization-of-arginine-nipaam-hybrid-hydrogel-as-wound-dressing-in-vitro-and-in-vivo-study
#11
De-Qun Wu, Jie Zhu, Hua Han, Jun-Zhi Zhang, Fei-Fei Wu, Xiao-Hong Qin, Jian-Yong Yu
A multi-functional hybrid hydrogel P(M-Arg/NIPAAm) with temperature response, anti-protein adsorption and antibacterial properties was prepared and applied as wound dressing. The hydrogel was carried out by free radical copolymerization of methacrylate arginine (M-Arg) and N-isopropyl acrylamide (NIPAAm) monomers using N,N'-methylene bisacrylamide as a crosslinker, and ammonium persulfate/N,N,N', N'-tetramethylethylenediamine as the redox initiator. To endow the antimicrobial property, chlorhexidine diacetate (CHX) was preloaded into the hydrogel and polyhexamethylene guanidine phosphate (PHMG) was grafted on the hydrogel surface, respectively...
January 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/28826699/major-surgery-diminishes-systemic-arginine-availability-and-suppresses-nitric-oxide-response-to-feeding-in-patients-with-early-stage-breast-cancer
#12
Mariëlle P K J Engelen, V Suzanne Klimberg, Arianna Allasia, Nicolaas E P Deutz
BACKGROUND & AIMS: Plasma arginine (ARG) levels are reduced in breast cancer, suggesting diminished systemic ARG availability. ARG and its product nitric oxide (NO) are important in early postoperative recovery due to its roles in immune function and wound healing. It remains unclear whether major surgery further diminishes systemic ARG availability due to enhanced ARG catabolism and/or insufficient endogenous ARG synthesis negatively affecting NO synthesis in patients with early stage breast cancer...
August 5, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28531982/study-of-the-keratin-based-therapeutic-dermal-patches-for-the-delivery-of-bioactive-molecules-for-wound-treatment
#13
Kush Kumar Nayak, Pratima Gupta
In the present study, dressing materials were fabricated in the form of dermal patches. The keratin based biocompatible materials, namely Keratin/Alginate, Keratin/Agar, and Keratin/Gellan were developed as therapeutic dermal patches. The patches were coated with green synthesized silver nanoparticles to prevent the microbial infection and were found to be antimicrobial against pathogens. Papain was used in the patches to acquire the enzymatic cell debridement and its activity was measured by reduction rate of benzoyl-l-arginine ethyl ester...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28472883/mussel-inspired-thermoresponsive-polypeptide-pluronic-copolymers-for-versatile-surgical-adhesives-and-hemostasis
#14
Dedai Lu, Hongsen Wang, Ting'e Li, Yunfei Li, Fajuan Dou, Shaobo Sun, Hongyun Guo, Shiqi Liao, Zhiwang Yang, Qiangbing Wei, Ziqiang Lei
Inspired by marine mussel adhesive proteins, polymers with catechol side groups have been extensively explored in industrial and academic research. Here, Pluronic L-31 alcoholate ions were used as the initiator to prepare a series of polypeptide-Pluronic-polypeptide triblock copolymers via ring-opening polymerization of l-DOPA-N-carboxyanhydride (DOPA-NCA), l-arginine-NCA (Arg-NCA), l-cysteine-NCA (Cys-NCA), and ε-N-acryloyl lysine-NCA (Ac-Lys-NCA). These copolymers demonstrated good biodegradability, biocompatibility, and thermoresponsive properties...
May 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28427959/beneficial-effects-of-heparin-and-l-arginine-on-dermonecrosis-effect-induced-by-vipera-lebetina-venom-involvement-of-no-in-skin-regeneration
#15
Nouara Bennacef-Heffar, Fatima Laraba-Djebari
It is well known that snake venoms such as Viperidae caused severe local effects such as hemorrhage, myonecrosis and dermonecrosis which can lead to permanent tissue loss or the disability. The aim of this study is to evaluate the skin regeneration using heparin and l-arginine as well as the dermonecrotic effects induced by Vipera lebetina venom (VLV). To better understand the toxic effects induced by VLV and to prevent or treat these effects, we evaluate the local effects and the skin regeneration with or without drugs...
July 2017: Acta Tropica
https://www.readbyqxmd.com/read/28292986/arginine-is-a-critical-substrate-for-the-pathogenesis-of-pseudomonas-aeruginosa-in-burn-wound-infections
#16
Jake Everett, Keith Turner, Qiuxian Cai, Vernita Gordon, Marvin Whiteley, Kendra Rumbaugh
Environmental conditions affect bacterial behavior and can greatly influence the course of an infection. However, the environmental cues that elicit bacterial responses in specific infection sites are relatively unknown. Pseudomonas aeruginosa is ubiquitous in nature and typically innocuous. However, it is also one of the most prevalent causes of fatal sepsis in burn wound patients. The aim of this study was to determine the impact of environmental factors, specifically the availability of arginine, on the pathogenesis of P...
March 14, 2017: MBio
https://www.readbyqxmd.com/read/28250059/netrin-1-restores-cell-injury-and-impaired-angiogenesis-in-vascular-endothelial-cells-upon-high-glucose-by-pi3k-akt-enos
#17
Ying Xing, Jingbo Lai, Xiangyang Liu, Nana Zhang, Jie Ming, Hengxin Liu, Xi Zhang
Diabetic foot ulceration (DFU) represents a common vascular complication of diabetes mellitus (DM) with high morbidity and disability resulting from amputation. Netrin-1 level was decreased in type 2 DM patients and has been identified as a protective regulator against diabetes-triggered myocardial infarction and nephropathy. Unfortunately, its role and molecular mechanism in DFU remain poorly elucidated. Here, netrin-1 levels were reduced in DM and DFU patients relative to healthy controls, with netrin-1 levels being the lowest in DFU patients...
May 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/28228068/stress-in-gastrointestinal-tract-and-stable-gastric-pentadecapeptide-bpc-157-finally-do-we-have-a-solution
#18
Predrag Sikiric, Sven Seiwerth, Rudolf Rucman, Domagoj Drmic, Mirjana Stupnisek, Antonio Kokot, Marko Sever, Ivan Zoricic, Zoran Zoricic, Lovorka Batelja, Tihomil Ziger, Josipa Vlainic, Zarko Rasic, Martina Lovric Bencic
Selye's syndrome produced by diverse nocuous agents and "response to damage as such" means Selye's stress triad in stress coping response to reestablish homeostasis. Logically, from the gastrointestinal tract viewpoint, such organoprotective/healing response implies the angiogenic growth factors that commonly signify the healing. Thereby, the gastric pentadecapeptide BPC 157-organoprotection (huge range of beneficial effects) signifies the Selye's stress concept/stress coping response implemented in and from gastrointestinal tract, and BPC 157 as an integrative mediator that integrates the adaptive bodily response to stress...
February 20, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28166447/nutrition-support-for-persistent-inflammation-immunosuppression-and-catabolism-syndrome
#19
Frederick A Moore, Stuart M Phillips, Craig J McClain, Jayshil J Patel, Robert G Martindale
Despite tremendous advances in critical care, multiple-organ failure continues to be a significant problem. However, in recent years, far fewer patients with multiple-organ failure die early, but many experience ongoing immune dysregulation and are developing persistent inflammation, immunosuppression, and catabolism syndrome (PICS). Most PICS patients are discharged to nonhome destinations, fail to rehabilitate, and succumb to indolent death. From a nutrition perspective, patients with PICS experience persistent inflammation-induced cachexia despite evidenced-based recommended intensive care unit nutrition support...
April 2017: Nutrition in Clinical Practice
https://www.readbyqxmd.com/read/27865272/proline-arginine-rich-pr-39-cathelicidin-structure-expression-and-functional-implication-in-intestinal-health
#20
REVIEW
Ravi Holani, Chaitanya Shah, Qahir Haji, G Douglas Inglis, Richard R E Uwiera, Eduardo R Cobo
Proline-Arginine-39 (PR-39) is a small cationic, proline and arginine rich, cathelicidin that plays an important role in the porcine innate immune system. Although PR-39 was first discovered in intestinal cell lysates of pigs, subsequent research has indicated that it is primarily expressed in bone marrow and other lymphoid tissues including the thymus and spleen, as well as in leukocytes. Mature PR-39 cathelicidin has anti-microbial activity against many gram-negative and some gram-positive bacteria. PR-39 is also a bridge between the innate and adaptive immune system with recognized immunomodulatory, wound healing, anti-apoptotic, and pro-angiogenic functions...
December 2016: Comparative Immunology, Microbiology and Infectious Diseases
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