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larval therapy

F S Masiero, M F K Aquino, M P Nassu, D I B Pereira, D S Leite, P J Thyssen
Maggot debridement therapy (MDT) consists on the intentional and controlled application of sterilized larvae of the order Diptera on necrotic skin lesions with the purpose of cleaning necrotic tissue and removing pathogenic bacteria. During MDT, a marked antimicrobial activity has been reported in literature specially associated with antibacterial substances from Lucilia sericata (Meigen); however, regarding Cochliomyia macellaria (Fabricius), little is known. This study aimed to evaluate in vitro inhibition of bacterial growth of Pseudomonas aeruginosa and Staphylococcus aureus in contact with excretions and secretions (ES) from C...
October 1, 2016: Neotropical Entomology
Lissa Cruz-Saavedra, Andrea Díaz-Roa, María A Gaona, Mónica L Cruz, Martha Ayala, Jesús A Cortés-Vecino, Manuel A Patarroyo, Felio J Bello
This study's main objective was to evaluate the action of larval therapy derived from Lucilia sericata and Sarconesiopsis magellanica (blowflies) regarding Leishmania panamensis using an in vivo model. Eighteen golden hamsters (Mesocricetus auratus) were used; they were divided into 6 groups. The first three groups consisted of 4 animals each; these, in turn, were internally distributed into subgroups consisting of 2 hamsters to be used separately in treatments derived from each blowfly species. Group 1 was used in treating leishmanial lesions with larval therapy (LT), whilst the other two groups were used for evaluating the used of larval excretions and secretions (ES) after the ulcers had formed (group 2) and before they appeared (group 3)...
September 26, 2016: Acta Tropica
Janet Y Nale, Mahananda Chutia, Philippa Carr, Peter T Hickenbotham, Martha R J Clokie
Clostridium difficile infection (CDI) is a global health threat associated with high rates of morbidity and mortality. Conventional antibiotic CDI therapy can result in treatment failure and recurrent infection. C. difficile produces biofilms which contribute to its virulence and impair antimicrobial activity. Some bacteriophages (phages) can penetrate biofilms and thus could be developed to either replace or supplement antibiotics. Here, we determined the impact of a previously optimized 4-phage cocktail on C...
2016: Frontiers in Microbiology
Athena Grounta, Paschalis Harizanis, Eleftherios Mylonakis, George-John E Nychas, Efstathios Z Panagou
The use of Galleria mellonella as a model host to elucidate microbial pathogenesis and search for novel drugs and therapies has been well appreciated over the past years. However, the effect of microorganisms with functional appeal in the specific host remains scarce. The present study investigates the effect of treatment with selected lactic acid bacteria (LAB) with probiotic potential, as potential protective agents by using live or heat-killed cells at 6 and 24 h prior to infection with Listeria monocytogenes and Staphylococcus aureus or as potential therapeutic agents by using cell-free supernatants (CFS) after infection with the same pathogens...
2016: PloS One
Ana C Mafud, Leonardo G Ferreira, Yvonne P Mascarenhas, Adriano D Andricopulo, Josué de Moraes
Schistosomiasis, a chronic neglected tropical disease caused by Schistosoma worms, is reported in nearly 80 countries. Although the disease affects approximately 260 million people, the treatment relies exclusively on praziquantel, a drug discovered in the mid-1970s that lacks efficacy against the larval stages of the parasite. In addition, the dependence on a single treatment has raised concerns about drug resistance, and reduced susceptibility has already been found in laboratory and field isolates. Therefore, novel therapies for schistosomiasis are needed, and several approaches have been used to that end...
September 1, 2016: Trends in Parasitology
Alireza Sanei-Dehkordi, Ali Khamesipour, Kamran Akbarzadeh, Amir Ahmad Akhavan, Akram Mir Amin Mohammadi, Younes Mohammadi, Yavar Rassi, Mohammad Ali Oshaghi, Zahra Alebrahim, Seyed Ebrahim Eskandari, Javad Rafinejad
Use of sterile fly larvae (maggots) of blow flies for the treatment of many different types of skin and soft tissue wounds is called Maggot debridement therapy (MDT). The larvae of blow flies secrete a broad spectrum of compounds with diverse mechanisms of action in the gut and salivary glands called excretion/secretion (ES) products which showed to have antimicrobial activities against Gram negative and positive bacteria. Cutaneous leishmaniasis (CL) which is the common form of leishmaniasis is difficult to treat...
August 24, 2016: Experimental Parasitology
Noemi Cowan, Alessia Raimondo, Jennifer Keiser
Infections with soil-transmitted helminths (STHs) are considered among the most persistent global health problems. The few available drugs have limitations including low efficacy against Trichuris trichiura infections. As a starting point toward drug repositioning, we studied a set of FDA-approved oncology drugs for activity against Trichuris muris since targets relevant to cancer therapy might have a function in helminth biology. Drugs were tested in vitro on the larval and adult stage of T. muris. Compounds active in vitro were tested in the T...
November 2016: Parasitology Research
M Sulima, W Wołyniec, U Oładakowska-Jedynak, W Patkowski, N Wasielak, K Witczak-Malinowska, S Borys, W Nahorski, A Wroczyńska, B Szostakowska, A Lass, M Krawczyk
INTRODUCTION: Alveolar echinococcosis is a parasitic disease caused by the larval stage of tapeworm Echinococcus multilocularis. It usually involves the liver, but can spread to other organs. The treatment of choice is a surgical resection supported by antiparasitic drugs. In the advanced stages of the disease a liver transplantation is the only option. AIM: This article presents the problems related to care of patients after liver transplantation for advanced alveolar echinococcosis...
June 2016: Transplantation Proceedings
Jalal Arabloo, Serajaddin Grey, Mohammadreza Mobinizadeh, Alireza Olyaeemanesh, Pejman Hamouzadeh, Kiumars Khamisabadi
BACKGROUND: Maggot therapy has recently attracted considerable attention as an emerging debridement technique for wound healing. This study aimed to review the safety, effectiveness and economic evaluations of Maggot Debridement Therapy for wound healing. METHODS: To retrieve the relevant evidences, the Cochrane Library (until September 2014) was searched by appropriate keywords, using free text and Mesh. Systematic reviews, HTA reports and economic evaluation studies that compared larval therapy with other debridement therapies, such as hydrogel in patients with various kinds of ulcers in terms of side effects, the wound healing rate, the healing time, and cost per QALY, were included...
2016: Medical Journal of the Islamic Republic of Iran
Hany M Elsheikha, Manuela Schnyder, Donato Traversa, Angela Di Cesare, Ian Wright, David W Lacher
Feline aelurostrongylosis, caused by the metastrongyloid nematode Aelurostrongylus abstrusus, is an important gastropod-borne parasitic lung disease in cats. Infection with A. abstrusus is widespread globally, but the increasing awareness of this parasite and the advent of more sensitive diagnostics have contributed to the apparent increase in its prevalence and geographic expansion. Clinical features may range in severity from subclinical to life-threatening respiratory disease. Parasitological standard techniques, such as visualization of the nematode first larval stage in faecal and respiratory (bronchial mucus or pleural fluid) samples, remain the mainstays of diagnosis...
2016: Parasites & Vectors
John C Moore, David M Langenau
Allogeneic cell transplantation is the transfer of cells from one individual into another of the same species and has become an indispensable technique for studying development, immunology, regeneration and cancer biology. In experimental settings, tumor cell engraftment into immunologically competent recipients has greatly increased our understanding of the mechanisms that drive self-renewal, progression and metastasis in vivo. Zebrafish have quickly emerged as a powerful genetic model of cancer that has benefited greatly from allogeneic transplantation...
2016: Advances in Experimental Medicine and Biology
Abhinav Upadhyay, Kumar Venkitanarayanan
Listeria monocytogenes is a major foodborne pathogen that causes life-threatening illnesses in humans. With emergence of antibiotic resistance in L. monocytogenes, there is considerable interest in testing the efficacy of alternative therapies for controlling listeriosis in humans. This study investigated the efficacy of three phytochemicals, namely trans-cinnamaldehyde (TC), carvacrol (CR), and thymol (TY) in reducing L. monocytogenes virulence in the recently established invertebrate model, Galleria mellonella...
July 2016: Journal of Natural Medicines
Matthew Kruger, Robert Boney, Alexander J Ordoobadi, Thomas F Sommers, Josef G Trapani, Allison B Coffin
Moderate to severe hearing loss affects 360 million people worldwide and most often results from damage to sensory hair cells. Hair cell damage can result from aging, genetic mutations, excess noise exposure, and certain medications including aminoglycoside antibiotics. Aminoglycosides are effective at treating infections associated with cystic fibrosis and other life-threatening conditions such as sepsis, but cause hearing loss in 20-30% of patients. It is therefore imperative to develop new therapies to combat hearing loss and allow safe use of these potent antibiotics...
2016: Frontiers in Cellular Neuroscience
Malay Sarkar, Rajnish Pathania, Anupam Jhobta, Babu Ram Thakur, Rajesh Chopra
Cystic echinococcosis (CE) is a zoonotic parasitic disease caused by the larval stages of the cestode Echinococcus granulosus. Worldwide, pulmonary hydatid cyst is a significant problem medically, socially, and economically. Surgery is the definitive therapy of pulmonary hydatidosis. Benzimidazoles may be considered in patients with a surgical contraindication. This review will focus on pathogenesis, lifecycle, clinical features, and management of pulmonary hydatid disease.
March 2016: Lung India: Official Organ of Indian Chest Society
Adrienne L Brundage, Tawni L Crippen, Jeffery K Tomberlin
Maggot debridement therapy (MDT) is the use of the larval stage of flies (i.e., Calliphoridae) to remove necrotic tissue and disinfect wounds. Effective MDT requires aseptic technique to prevent the unintentional introduction of pathogenic bacteria into a wound to be debrided; yet the external surface of Calliphoridae eggs is often heavily contaminated with bacteria. Studies of external disinfection of dipteran eggs have been reported, but neither their efficacy nor effect on egg viability has been adequately assessed...
March 2016: Wound Repair and Regeneration
Thomas S Lisse, Leah J Middleton, Adriana D Pellegrini, Paige B Martin, Emily L Spaulding, Olivia Lopes, Elizabeth A Brochu, Erin V Carter, Ashley Waldron, Sandra Rieger
Paclitaxel is a microtubule-stabilizing chemotherapeutic agent that is widely used in cancer treatment and in a number of curative and palliative regimens. Despite its beneficial effects on cancer, paclitaxel also damages healthy tissues, most prominently the peripheral sensory nervous system. The mechanisms leading to paclitaxel-induced peripheral neuropathy remain elusive, and therapies that prevent or alleviate this condition are not available. We established a zebrafish in vivo model to study the underlying mechanisms and to identify pharmacological agents that may be developed into therapeutics...
April 12, 2016: Proceedings of the National Academy of Sciences of the United States of America
Rebecca J Linger, Esther J Belikoff, Ying Yan, Fang Li, Holly A Wantuch, Helen L Fitzsimons, Maxwell J Scott
BACKGROUND: Diabetes and its concurrent complications impact a significant proportion of the population of the US and create a large financial burden on the American health care system. FDA-approved maggot debridement therapy (MDT), the application of sterile laboratory-reared Lucilia sericata (green bottle fly) larvae to wounds, is a cost-effective and successful treatment for diabetic foot ulcers and other medical conditions. Human platelet derived growth factor-BB (PDGF-BB) is a secreted dimeric peptide growth factor that binds the PDGF receptor...
2016: BMC Biotechnology
Franciéle Souza Masiero, Patricia Jacqueline Thyssen
Larval therapy consists on the application of sterilized carrion flies larvae, reared in laboratory, on acute, chronic, and/or infected wounds in order to promote healing. Conventional methods for treating injuries include mechanical debridement or silver-based dressings; however, they are not always effective for wound healing. Larval therapy is a feasible and safe treatment for therapeutic application and, in many cases, the only and the most recommended alternative for difficult healing injuries. Thus, this study aimed to evaluate the competence of Cochliomyia macellaria F...
June 2016: Parasitology Research
Panos G Kalatzis, Roberto Bastías, Constantina Kokkari, Pantelis Katharios
Bacterial infections are a serious problem in aquaculture since they can result in massive mortalities in farmed fish and invertebrates. Vibriosis is one of the most common diseases in marine aquaculture hatcheries and its causative agents are bacteria of the genus Vibrio mostly entering larval rearing water through live feeds, such as Artemia and rotifers. The pathogenic Vibrio alginolyticus strain V1, isolated during a vibriosis outbreak in cultured seabream, Sparus aurata, was used as host to isolate and characterize the two novel bacteriophages φSt2 and φGrn1 for phage therapy application...
2016: PloS One
Martin J R Hall, Richard L Wall, Jamie R Stevens
Traumatic myiasis, the parasitic infestation by fly larvae in traumatic lesions of the tissues of living vertebrates, is a serious medical condition in humans and a welfare and economic issue in domestic animals. New molecular studies are providing insights into its evolution and epidemiology. Nevertheless, its incidence in humans is generally underreported, particularly in tropical and subtropical regions. Myiasis in domestic animals has been studied more extensively, but continuous management is difficult and expensive...
2016: Annual Review of Entomology
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