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https://www.readbyqxmd.com/read/28511700/a-new-easy-to-make-pectin-honey-hydrogel-enhances-wound-healing-in-rats
#1
Gessica Giusto, Cristina Vercelli, Francesco Comino, Vittorio Caramello, Massimiliano Tursi, Marco Gandini
BACKGROUND: Honey, alone or in combination, has been used for wound healing since ancient times and has reemerged as a topic of interest in the last decade. Pectin has recently been investigated for its use in various biomedical applications such as drug delivery, skin protection, and scaffolding for cells. The aim of the present study was to develop and evaluate a pectin-honey hydrogel (PHH) as a wound healing membrane and to compare this dressing to liquid honey. METHODS: Thirty-six adult male Sprague-Dawley rats were anesthetized and a 2 × 2 cm excisional wound was created on the dorsum...
May 16, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28490123/kinetics-of-conversion-of-dihydroxyacetone-to-methylglyoxal-in-new-zealand-m%C3%A4-nuka-honey-part-iv-formation-of-hmf
#2
Megan N C Grainger, Adrian Owens, Merilyn Manley-Harris, Joseph R Lane, Richard J Field
During a study of the conversion of dihydroxyacetone (DHA) to methylglyoxal (MGO) in maturing New Zealand mānuka honey, the kinetics of formation of 5-(hydroxymethyl)furfural (HMF) was studied at temperatures from 4 to 37°C. Formation of HMF was first-order during an induction period and zero-order thereafter indicating that the mechanism includes the formation of certain critical intermediates and that these require time to build up; the duration of the induction period depended primarily upon temperature...
October 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28479926/oral-administration-of-tualang-and-manuka-honeys-modulates-breast-cancer-progression-in-sprague-dawley-rats-model
#3
Sarfraz Ahmed, Siti Amrah Sulaiman, Nor Hayati Othman
Breast cancer has been recognized as the leading cause of death in women worldwide. Research has shown the importance of complementary and alternative therapies in cancer. In this study, we investigated the antitumoural therapeutic effects of Malaysian Tualang honey (TH) and Australian/New Zealand Manuka honey (MH) against breast cancer in rats. Thirty syngeneic virgin female Sprague-Dawley (SD) rats were induced by the carcinogen 1-methyl-1-nitrosourea (MNU) 80 mg/kg. The treatment started when first palpable tumour reached 10-12 mm in size by dividing rats into following groups: Group 0 (negative control); Group 1 (positive control); and Groups 2 and 3 which received 1...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28474502/honey-is-potentially-effective-in-the-treatment-of-atopic-dermatitis-clinical-and-mechanistic-studies
#4
Abdullah A Alangari, Keith Morris, Bashir A Lwaleed, Laurie Lau, Ken Jones, Rose Cooper, Rowena Jenkins
INTRODUCTION: As manuka honey (MH) exhibits immunoregulatory and anti-staphylococcal activities, we aimed to investigate if it could be effective in the treatment of atopic dermatitis (AD). METHODS: Adult volunteers with bilateral AD lesions were asked to apply MH on one site overnight for seven consecutive days and leave the contralateral site untreated as possible. Three Item Severity score was used to evaluate the response. Skin swabs were obtained from both sites before and after treatment to investigate the presence of staphylococci and enterotoxin production...
June 2017: Immunity, Inflammation and Disease
https://www.readbyqxmd.com/read/28463161/feasibility-of-patient-reporting-of-symptomatic-adverse-events-via-the-patient-reported-outcomes-version-of-the-common-terminology-criteria-for-adverse-events-pro-ctcae-in-a-chemoradiotherapy-cooperative-group-multicenter-clinical-trial
#5
Ethan Basch, Stephanie L Pugh, Amylou C Dueck, Sandra A Mitchell, Lawrence Berk, Shannon Fogh, Lauren J Rogak, Marcha Gatewood, Bryce B Reeve, Tito R Mendoza, Ann M O'Mara, Andrea M Denicoff, Lori M Minasian, Antonia V Bennett, Ann Setser, Deborah Schrag, Kevin Roof, Joan K Moore, Thomas Gergel, Kevin Stephans, Andreas Rimner, Albert DeNittis, Deborah Watkins Bruner
PURPOSE: To assess the feasibility of measuring symptomatic adverse events (AEs) in a multicenter clinical trial using the National Cancer Institute's Patient-Reported Outcomes version of the Common Terminology Criteria for Adverse Events (PRO-CTCAE). METHODS AND MATERIALS: Patients enrolled in NRG Oncology's RTOG 1012 (Prophylactic Manuka Honey for Reduction of Chemoradiation Induced Esophagitis-Related Pain during Treatment of Lung Cancer) were asked to self-report 53 PRO-CTCAE items representing 30 symptomatic AEs at 6 time points (baseline; weekly ×4 during treatment; 12 weeks after treatment)...
June 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28444960/in-vivo-absorption-and-metabolism-of-leptosperin-and-methyl-syringate-abundantly-present-in-manuka-honey
#6
Akari Ishisaka, Shinichi Ikushiro, Mie Takeuchi, Yukako Araki, Maki Juri, Yui Yoshiki, Yoshichika Kawai, Toshio Niwa, Noritoshi Kitamoto, Toshiyuki Sakaki, Hirohito Ishikawa, Yoji Kato
SCOPE: Manuka honey, which shows strong non-peroxide-dependent antibacterial activity, contains unique components, such as methyl syringate 4-O-β-D-gentiobioside (leptosperin) and its aglycone, methyl syringate (MSYR). To determine the potential for biological activity evoked by the ingestion of leptosperin and MSYR, we investigated the absorption and metabolism of these components in manuka honey. METHODS AND RESULTS: The incubation of MSYR with liver microsomes or S9 fractions in vitro resulted in the formation of MSYR-glucuronide (MSYR-GA), MSYR-sulfate (MSYR-S), and syringic acid as metabolites...
April 26, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28438282/in-vitro-susceptibility-of-methicillin-resistant-stayphylococcus-aureus-to-honey
#7
Muhammad Barkaat Hussain, Abdul Hannan, Muhammad Absar, NadeemShafique Butt
Wound infections caused by methicillin-resistant Staphylococcus aureus (MRSA) is becoming much complicated and costly to treat as antimicrobial resistance is quite common. Twenty five MRSA strains isolated from infected wounds and three ATCC reference strains were evaluated for their susceptibility to locally produced black seed (Nigella sativa), beri (ZiziphusJujuba) and shain honey (Plectranthus rugosus wall) by agar incorporation assay. Medically graded manuka honey (UMF 21(+)) was included as control. Locally produced black seed honey inhibited all clinical isolates at mean MIC of 5...
May 2017: Complementary Therapies in Clinical Practice
https://www.readbyqxmd.com/read/28417271/antimicrobial-effects-of-manuka-honey-on-in-vitro-biofilm-formation-by-clostridium-difficile
#8
M Piotrowski, P Karpiński, H Pituch, A van Belkum, P Obuch-Woszczatyński
Clostridium difficile is the cause of the nosocomial C. difficile infection (CDI). The conventional antibiotics used in CDI therapy are often unsuccessful, and recurrent infections may occur. Biofilm formation by C. difficile is associated with chronic or recurrent infections; biofilms may contribute to virulence and impaired antimicrobial efficacy. Manuka honey, derived from the Manuka tree (Leptospermum scoparium), is known to exhibit antimicrobial properties that are associated with its significant content of methylglyoxal, a natural antibiotic...
April 18, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28415841/unique-pattern-of-protein-bound-maillard-reaction-products-in-manuka-leptospermum-scoparium-honey
#9
Michael Hellwig, Jana Rückriemen, Daniel Sandner, Thomas Henle
As a unique feature, honey from the New Zealand manuka tree (Leptospermum scoparium) contains substantial amounts of dihydroxyacetone (DHA) and methylglyoxal (MGO). Although MGO is a reactive intermediate in the Maillard reaction, very little is known about reactions of MGO with honey proteins. We hypothesized that the abundance of MGO should result in a particular pattern of protein-bound Maillard reaction products (MRPs) in manuka honey. A protein-rich high-molecular-weight fraction was isolated from 12 manuka and 8 non-manuka honeys and hydrolyzed enzymatically...
April 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28407946/manuka-honey-leptospermum-scoparium-inhibits-jack-bean-urease-activity-due-to-methylglyoxal-and-dihydroxyacetone
#10
Jana Rückriemen, Oliver Klemm, Thomas Henle
Manuka honey (Leptospermum scoparium) exerts a strong antibacterial effect. Bacterial enzymes are an important target for antibacterial compounds. The enzyme urease produces ammonia and enables bacteria to adapt to an acidic environment. A new enzymatic assay, based on photometric detection of ammonia with ninhydrin, was developed to study urease activity. Methylglyoxal (MGO) and its precursor dihydroxyacetone (DHA), which are naturally present in manuka honey, were identified as jack bean urease inhibitors with IC50 values of 2...
September 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28392803/periodontal-application-of-manuka-honey-antimicrobial-and-demineralising-effects-in-vitro
#11
Syarida H Safii, Geoffrey R Tompkins, Warwick J Duncan
Background. Topical application of manuka honey is effective in the treatment of burns and soft-tissue infections. The aim of this study was to assess the antibacterial activity of manuka honey against plaque-associated bacteria in vitro in order to evaluate the potential application as an adjunct to periodontal treatment. Materials and Methods. The minimum bacteriostatic and bactericidal concentrations (MIC and MBC) of manuka honey were compared to those of white clover honey against a variety of plaque-associated bacteria, at the natural and neutral pH...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28326322/a-comparison-of-tissue-engineering-scaffolds-incorporated-with-manuka-honey-of-varying-umf
#12
Katherine R Hixon, Tracy Lu, Sarah H McBride-Gagyi, Blythe E Janowiak, Scott A Sell
Purpose. Manuka honey (MH) is an antibacterial agent specific to the islands of New Zealand containing both hydrogen peroxide and a Unique Manuka Factor (UMF). Although the antibacterial properties of MH have been studied, the effect of varying UMF of MH incorporated into tissue engineered scaffolds have not. Therefore, this study was designed to compare silk fibroin cryogels and electrospun scaffolds incorporated with a 5% MH concentration of various UMF. Methods. Characteristics such as porosity, bacterial clearance and adhesion, and cytotoxicity were compared...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28287735/targeted-antibiotic-delivery-selective-siderophore-conjugation-with-daptomycin-confers-potent-activity-against-multidrug-resistant-acinetobacter-baumannii-both-in-vitro-and-in-vivo
#13
Manuka Ghosh, Patricia A Miller, Ute Möllmann, William D Claypool, Valerie A Schroeder, William R Wolter, Mark Suckow, Honglin Yu, Shuang Li, Weiqiang Huang, Jaroslav Zajicek, Marvin J Miller
In order to address the dire need for new antibiotics to treat specific strains of drug resistant Gram-negative bacterial infections, a mixed ligand analog of the natural Acinetobacter baumannii selective siderophore, fimsbactin, was coupled to daptomycin, a Gram-positive only antibiotic. The resulting conjugate 11 has potent activity against multidrug resistant strains of A. baumannii both in vitro and in vivo. The study also indicates that conjugation of siderophores to "drugs" that are much larger than the siderophore (iron transport agent) itself facilitates active uptake that circumvents the normal permeability problems in Gram-negative bacteria...
April 1, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28287469/strawberry-tree-honey-induces-growth-inhibition-of-human-colon-cancer-cells-and-increases-ros-generation-a-comparison-with-manuka-honey
#14
Sadia Afrin, Tamara Y Forbes-Hernandez, Massimiliano Gasparrini, Stefano Bompadre, José L Quiles, Gavino Sanna, Nadia Spano, Francesca Giampieri, Maurizio Battino
Honey is a natural product known to modulate several biological activities including cancer. The aim of the present study was to examine the phytochemical content and the antioxidant activity of Strawberry tree (Arbutus unedo) honey (STH) and its cytotoxic properties against human colon adenocarcinoma (HCT-116) and metastatic (LoVo) cell lines in comparison with Manuka (Leptospermum scoparium) honey (MH). Several unifloral STH and MH were analyzed for their phenolic, flavonoid, amino acid and protein contents, as well as their radical scavenging activities...
March 11, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28250794/manuka-honey-exerts-antioxidant-and-anti-inflammatory-activities-that-promote-healing-of-acetic-acid-induced-gastric-ulcer-in-rats
#15
Saad B Almasaudi, Aymn T Abbas, Rashad R Al-Hindi, Nagla A El-Shitany, Umama A Abdel-Dayem, Soad S Ali, Rasha M Saleh, Soad K Al Jaouni, Mohammad Amjad Kamal, Steve M Harakeh
Gastric ulcers are a major problem worldwide with no effective treatment. The objective of this study was to evaluate the use of manuka honey in the treatment of acetic acid-induced chronic gastric ulcers in rats. Different groups of rats were treated with three different concentrations of honey. Stomachs were checked macroscopically for ulcerative lesions in the glandular mucosa and microscopically for histopathological alterations. Treatment with manuka honey significantly reduced the ulcer index and maintained the glycoprotein content...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28244415/a-randomized-phase-2-trial-of-prophylactic-manuka-honey-for-the-reduction-of-chemoradiation-therapy-induced-esophagitis-during-the-treatment-of-lung-cancer-results-of-nrg-oncology-rtog-1012
#16
Shannon E Fogh, Snehal Deshmukh, Lawrence B Berk, Amylou C Dueck, Kevin Roof, Sherif Yacoub, Thomas Gergel, Kevin Stephans, Andreas Rimner, Albert DeNittis, John Pablo, Justin Rineer, Terence M Williams, Deborah Bruner
PURPOSE: Randomized trials have shown that honey is effective for the prevention of radiation-induced mucositis in head and neck cancer patients. Because there is no efficacious preventative for radiation esophagitis in lung cancer patients, this trial compared liquid honey, honey lozenges, and standard supportive care for radiation esophagitis. METHODS: The patients were stratified by percentage of esophagus receiving specific radiation dose (V60 Gy esophagus <30% or ≥30%) and were then randomized between supportive care, 10 mL of liquid manuka honey 4 times a day, and 2 lozenges (10 mL of dehydrated manuka honey) 4 times a day during concurrent chemotherapy and radiation therapy...
March 15, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28239398/a-pilot-randomized-controlled-study-of-nanocrystalline-silver-manuka-honey-and-conventional-dressing-in-healing-diabetic-foot-ulcer
#17
Ka-Kit Tsang, Enid Wai-Yung Kwong, Tony Shing-Shun To, Joanne Wai-Yee Chung, Thomas Kwok-Shing Wong
Nanocrystalline silver (nAg) and Manuka honey (MH) dressing have increasing popularity for treating diabetic foot ulcer (DFU). This study was an open-label randomized controlled trial with three parallel groups' design in examining the preliminary effectiveness of nAg against MH and conventional dressing in healing DFU in terms of ulcer healing, ulcer infection, and inflammation. 31 participants (11 in the nAg group, 10 in the MH group, and 10 in the convention group) diagnosed with type 2 diabetes were enrolled...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28238430/response-of-leptospermum-scoparium-kunzea-robusta-and-pinus-radiata-to-contrasting-biowastes
#18
J Esperschuetz, C Anderson, S Bulman, O Katamian, J Horswell, N M Dickinson, B H Robinson
The myrtaceae family has a cosmopolitan distribution and includes the Australasian native species Leptospermum scoparium (mānuka) and Kunzea robusta (kānuka), which are of economic interest for the production of high-value honey and essential oils. Potentially, these species could be established on low-fertility or degraded soils that have been amended with biowastes, including biosolids and sawdust. We aimed to determine the effect of these biowastes on nitrate leaching and the growth and chemical composition of these plant species compared to Pinus radiata (pine), a common forestry species...
February 23, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28193412/lepteridine-as-a-unique-fluorescent-marker-for-the-authentication-of-manuka-honey
#19
Bin Lin, Kerry M Loomes, Gordana Prijic, Ralf Schlothauer, Jonathan M Stephens
The recent discovery of two unique manuka marker fluorescence wavelengths (MM1 and MM2) potentially offers a rapid and cost-effective approach for manuka honey authentication using spectroscopy. The fluorophore responsible for the MM1 marker has been identified as leptosperin. We investigated whether lepteridine may be responsible for the MM2 fluorescence. We quantified the lepteridine in manuka honey and manuka nectar, which ranged between 5-52mg/kg and 80-205mg/kg, respectively. Notably, the fluorescent spectrum of synthetic lepteridine matched the MM2 fluorescence signature...
June 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28174146/antibacterial-activities-of-manuka-and-honeydew-honey-based-membranes-against-bacteria-that-cause-wound-infections-in-animals
#20
C Tramuta, P Nebbia, P Robino, G Giusto, M Gandini, S Chiadò-Cutin, E Grego
In this study, membranes composed of honey (Manuka or Honeydew) and pectin were developed, and the ISO 22196 method was used to evaluate their antibacterial activities against multidrug-resistant bacteria (i.e., Staphylococcus pseudointermedius, Escherichia coli, Proteus mirabilis, Pseudomonas aeruginosa) that cause wound infection in animals. The results demonstrated that both Manuka and Honeydew honey-based membranes had strong antibacterial activities against the strain of methicillin-resistant S. pseudointermedius tested...
February 2017: Schweizer Archiv Für Tierheilkunde
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