Cordelia Rasa, Roger W. Meola, Rudolf Schenker,
... author on: Oxford Academic PubMed Google Scholar Rudolf Schenker Rudolf Schenker Department of Entomology, Texas A&M University, College ...
Tópico(s): Bacillus and Francisella bacterial research
2000 - Oxford University Press | Journal of Medical Entomology
Michel Schenker, Rudolf Kraftsik, Liliane Glauser, Thierry Küntzer, Julien Bogousslavsky, Ibtissam Barakat‐Walter,
We have shown that a local administration of thyroid hormones (T3) at the level of transected rat sciatic nerve induced a significant increase in the number of regenerated axons. To address the question of whether local administration of T3 rescues the axotomized sensory neurons from death, in the present study we estimated the total number of surviving neurons per dorsal root ganglion (DRG) in three experimental group animals. Forty-five days following rat sciatic nerve transection, the lumbar (L4 ...
Tópico(s): Pain Mechanisms and Treatments
2003 - Elsevier BV | Experimental Neurology
Catherine Bourguinat, Alice C.Y. Lee, Regina Lizundia, Byron L. Blagburn, Janice L. Liotta, Marc S. Kraus, Kathy Keller, Christian Epe, Louis Létourneau, Claudia L. Kleinman, Tara Paterson, Elena Carretón, José Alberto Montoya-Alonso, Hubert Smith, Aron Bhan, Andrew S. Peregrine, James Carmichael, Jason Drake, Rudolf Schenker, Ronald Kaminsky, Dwight D. Bowman, Timothy G. Geary, Roger K. Prichard,
Macrocyclic lactone (ML) endectocides are used as chemoprophylaxis for heartworm infection (Dirofilaria immitis) in dogs and cats. Claims of loss of efficacy (LOE) of ML heartworm preventives have become common in some locations in the USA. We directly tested whether resistance to MLs exists in LOE isolates of D. immitis and identified genetic markers that are correlated with, and therefore can predict ML resistance. ML controlled studies showed that LOE strains of D. immitis established infections ...
Tópico(s): Parasite Biology and Host Interactions
2015 - Elsevier BV | Veterinary Parasitology
Catherine Bourguinat, Kathy Keller, Byron L. Blagburn, Rudolf Schenker, Timothy G. Geary, Roger K. Prichard,
Tópico(s): Parasite Biology and Host Interactions
2011 - Elsevier BV | Veterinary Parasitology
D.J. Kok, Edwina Williams, Rudolf Schenker, N.J. Archer, Ivan G. Horak,
Spirocerca lupi is primarily a parasite of dogs and other carnivores. Clinical signs of infection are regurgitation, vomiting, weight loss, coughing and dyspnoea. Sudden death can also occur due to a ruptured aortic aneurysm. In this study, the Eastern Cape Province of South Africa was identified as an area with a high prevalence of S. lupi. A subsequent investigation, to evaluate the efficacy of milbemycin oxime as a prophylactic agent for canine spirocercosis, involved 58 puppies that were raised ...
Tópico(s): Parasitic Diseases Research and Treatment
2010 - Elsevier BV | Veterinary Parasitology
D.J. Kok, Rudolf Schenker, N.J. Archer, Ivan G. Horak, Paul Swart,
The aim of this investigation was to determine the efficacy of milbemycin oxime in preventing the oesophageal encapsulation of Spirocerca lupi, following the experimental infection of dogs. Two studies were conducted which involved a total of 21 purpose-bred Beagles. Each dog was infected with approximately 40, third stage infective S. lupi larvae. The larvae were dissected from scarabaeid beetles that had been collected from areas endemic for spirocercosis. In the first study, milbemycin oxime ( ...
Tópico(s): Dermatological diseases and infestations
2010 - Elsevier BV | Veterinary Parasitology
Ezio Ferroglio, Luca Rossi, E. Tomio, Rudolf Schenker, P. Bianciardi,
Two trials were conducted to evaluate the therapeutic and prophylactic activity of milbemycin oxime (Interceptor®, Novartis Animal Health) against the eye-worm Thelazia callipaeda (Spirurida, Thelaziidae) infection. In Trial 1, the therapeutic efficacy of milbemycin oxime was evaluated in 55 naturally infected dogs treated with min. 0.5 mg/kg milbemycin oxime. The dogs were clinically examined for the presence of eyeworms before and again 7 days after treatment. Dogs still positive were given a second ...
Tópico(s): Insects and Parasite Interactions
2008 - Elsevier BV | Veterinary Parasitology
Karen A. Moriello, Douglas J. DeBoer, Rudolf Schenker, Jenifer L. Blum, Lynn M. Volk,
Abstract Oral lufenuron is reportedly an effective treatment for some cats with dermatophytosis. The purpose of this study was to determine if lufenuron, when used as a pre‐treatment prior to challenge exposure, would be protective against the development of infection after the direct topical application of fungal macrocondia ( Microsporum canis spores). Three groups ( n = 6/group) of juvenile cats were treated with either monthly oral lufenuron (30 or 133 mg/kg) or placebo. After 2 months of treatment, ...
Tópico(s): Allergic Rhinitis and Sensitization
2004 - Wiley | Veterinary Dermatology
Rudolf Schenker, Olivier Tinembart, E. Humbert‐Droz, T. Cavaliero, B Yerly,
Speed of kill and percentage kill of nitenpyram (CAPSTAR®) was compared to fipronil (Frontline® spot-on), imidacloprid (Bayvantage®/Advantage™), selamectin (Stronghold™/Revolution™) and cythioate (Cyflee®) against adult fleas on cats and dogs 3 and 8 h post-treatment. Selamectin was used on dogs only; cythioate was used on cats only. Groups of eight cats and eight dogs (four males and four females each) were experimentally infested with 100 unfed fleas 1 day prior to treatment with the test products. ...
Tópico(s): Vector-borne infectious diseases
2003 - Elsevier BV | Veterinary Parasitology
Jacques Guillot, K. Rojzner, Charles Fournier, François-Olivier Touati, René Chermette, E. Malandain, F. Jankowski, Wolfgang Seewald, Rudolf Schenker,
The efficacy of oral lufenuron, a chitin synthetase inhibitor, combined with topical enilconazole, was evaluated for the management of Microsporum canis infection in 100 cats housed in two catteries in France. The cats were treated with weekly rinses with enilconazole (0.2 per cent) for four weeks and, in each cattery, one group (A) was also treated with micronised griseofulvin (25 mg/kg administered orally twice a day for five weeks) and a second group (B) was treated with 60 mg/kg lufenuron administered ...
Tópico(s): Fungal Infections and Studies
2002 - Wiley | Veterinary Record
Susan R. Dean, Roger W. Meola, Shirlee M. Meola, Helga Sittertz-Bhatkar, Rudolf Schenker,
When cat fleas, Ctenocephalides felis (Bouché), were fed concentrations of lufenuron in cattle blood ranging from 0.5 to 4 ppm, adult mortality increased in a dose-dependent manner to a maximum of ≈24% over a period of 10 d. Fleas treated with 0.5 ppm produced abnormal endocuticle consisting of protein globules embedded in an amorphous chitin matrix. At concentrations of 1.0 ppm or greater, endocuticle formation was inhibited. Ultrastructural studies demonstrated that inhibition of chitin synthesis ...
Tópico(s): Yersinia bacterium, plague, ectoparasites research
1999 - Oxford University Press | Journal of Medical Entomology
Roger W. Meola, Susan R. Dean, Shirlee M. Meola, Helga Sittertz-Bhatkar, Rudolf Schenker,
When adult cat fleas, Ctenocephalides felis (Bouché), were fed concentrations of < or = 0.08 ppm lufenuron in cattle blood, egg hatch did not differ significantly from the controls. However, as the concentration of lufenuron in blood increased from 0.125 to 1.0 ppm egg hatch decreased to 64 and 2%, respectively. Most of these eggs contained fully developed larvae. Microscopic examination of unhatched larvae, revealed that the cuticle epidermal cells, chorion, and vitelline membrane all were affected ...
Tópico(s): Vector-borne infectious diseases
1999 - Oxford University Press | Journal of Medical Entomology
Susan R. Dean, Roger W. Meola, Shirlee M. Meola, Helga Sittertz-Bhatkar, Rudolf Schenker,
Adult cat fleas, Ctenocephalides felis (Bouch6), were fed suboptimal in vitro concentrations of lufenuron in blood to allow hatching of flea larvae for cytological study. At concentrations of 0.125, 0.25, and 0.5 ppm, larval hatch was 64,15, and 4%, respectively. Larvae hatching from eggs laid by adults fed lufenuron at concentrations of 0.025,0.08, or 0.125 ppm did not differ significantly from the control. However, many larvae from the 0.08-ppm group and higher concentrations died during the 1st ...
Tópico(s): Bee Products Chemical Analysis
1998 - Oxford University Press | Journal of Medical Entomology
Tópico(s): Nematode management and characterization studies
1984 - Elsevier BV | Pedobiologia
Cassan N. Pulaski, John B. Malone, Catherine Bourguinat, Roger K. Prichard, Timothy G. Geary, Danielle Ward, Thomas R. Klei, Tal Guidry, George `Bud’ Smith, Brooke Delcambre, Jonathan Bova, Jenny Pepping, James Carmichael, Rudolf Schenker, Romain Pariaut,
Strains of Dirofilaria immitis suspected of lack of efficacy (LOE) to macrocyclic lactone (ML) preventive drugs have been increasingly reported in dogs by practicing veterinarians since 2005 in the Lower Mississippi Delta region. If proven, and not controlled in the early stages, the emergence of ML drug resistance threatens to become a widespread problem in the US that may limit the effectiveness of current preventive drug treatment methods. To validate practice reports, a statewide survey of Louisiana ...
Tópico(s): Parasite Biology and Host Interactions
2014 - BioMed Central | Parasites & Vectors
Gary Conboy, Andrea Bourque, Lisa Miller, Wolfgang Seewald, Rudolf Schenker,
Crenosoma vulpis, the fox lungworm, infects wild and domestic canids and is a cause of chronic respiratory disease in dogs in North America and Europe. The objective of this study was to determine the efficacy of milbemycin oxime (0.5mg/kg)/praziquantel (5mg/kg) (Milbemax; Novartis Animal Health, Inc.) against C. vulpis infection in a randomized, blinded, placebo-controlled study using experimentally infected dogs. Sixteen beagles (8 males, 8 females) were each given 100 infective third-stage larvae ...
Tópico(s): Parasitic Infections and Diagnostics
2013 - Elsevier BV | Veterinary Parasitology
Martı́n Breijo, Fernanda Isnardi, M. Mónica Brauer, Rudolf Schenker, Mariana L. Ferrari, Ana M. Ferreira,
Tópico(s): Parasites and Host Interactions
2011 - Elsevier BV | Veterinary Parasitology
Rudolf Schenker, Dwight D. Bowman, C. Epe, Robert Cody, Wolfgang Seewald, G. Strehlau, P. Junquera,
Two studies were performed to examine the efficacy of milbemycin oxime against fourth-stage larvae or adults of Toxocara cati. In the study to determine efficacy against fourth-stage larvae, 20 domestic shorthair cats were inoculated with 500 embryonated eggs. Four weeks after inoculation, the animals were allocated to two groups, and cats in one group were treated with medicated tablets containing 4 mg milbemycin oxime and 10 mg praziquantel (MILBEMAX®) and cats in the other group with placebo tablets. ...
Tópico(s): Helminth infection and control
2006 - Elsevier BV | Veterinary Parasitology
Tópico(s): Study of Mite Species
1986 - Elsevier BV | Pedobiologia
Konstanze Miehle, Andrea Tannapfel, P. Lamesch, G Borte, E Schenker, Regine Kluge, Rudolf Ott, Volker Wiechmann, Martin Koch, Woubet Tefera Kassahun, Ralf Paschke, Christian A. Koch,
We present a 54-yr-old woman with ectopic corticotropin syndrome caused by a neuroendocrine tumor of the pancreas. At initial presentation, the patient suffered from diarrhea, heartburn, and nonspecific abdominal pain. There was no evidence of Cushing’s syndrome. A neuroendocrine tumor in the head of the pancreas with metastases into peripancreatic lymph nodes was diagnosed and completely resected. Fourteen months later, abdominal computed tomography and scintigraphy with 111In-labeled octreotide ...
Tópico(s): Pituitary Gland Disorders and Treatments
2004 - Oxford University Press | The Journal of Clinical Endocrinology & Metabolism
Rudolf Schenker, Robert Cody, G. Strehlau, D C Alexander, P. Junquera,
The effect of two treatment programmes on egg shedding in dogs naturally infected with Toxocara canis, one based on a milbemycin oxime–praziquantel–lufenuron combination (SENTINEL® Spectrum; Group 1) and the other based on a febantel–pyrantel embonate–praziquantel combination (DRONTAL® Plus; Group 2), was compared in a study involving 104 suckling pups from three different kennels. The animals in Group 1 were treated at a minimum milbemycin oxime dose of 0.5 mg/kg bw starting at 2 weeks of age and ...
Tópico(s): Dermatological diseases and infestations
2006 - Elsevier BV | Veterinary Parasitology
Rudolf Schenker, Deon de Beer, Willie du Preez, M. B. Thomas, PW Richter,
Tópico(s): Biomedical Ethics and Regulation
1999 - Academy of Science of South Africa | South African Journal of Science
... Une perspective mcumenique. Edited by Lukas Vischer, Lukas Schenker and Rudolf Dellsperger. Pp. 345 incl. numerous ills and black ...
Tópico(s): Christian Theology and Mission
1997 - Cambridge University Press | The Journal of Ecclesiastical History
... Une perspective œcuménique. Edited by Lukas Vischer, Lukas Schenker and Rudolf Dellsperger. Pp. 345 incl. numerous ills and black ...
Tópico(s): Theology and Canon Law Studies
1997 - Cambridge University Press | The Journal of Ecclesiastical History
... en Suisse. Une perspective æcuménique. Edited by Lukas Schenker and Rudolf Dellsperger. Pp. 345 incl. numerous ills and black ...
Tópico(s): Theology and Canon Law Studies
1997 - Cambridge University Press | The Journal of Ecclesiastical History
... Une perspective oecuménique. Edited by Lukas Vischer, Lukas Schenker, and Rudolf Dellsperger. French edition supervised by OLrviER FATIO. Geneva: ...
1997 - Cambridge University Press | Church History
Ibtissam Barakat‐Walter, Rudolf Kraftsik, Michel Schenker, Thierry Küntzer,
It has been already demonstrated that thyroid hormone (T3) is one of the most important stimulating factors in peripheral nerve regeneration. We have recently shown that local administration of T3 in silicon tubes at the level of the transected rat sciatic nerve enhanced axonal regeneration and improved functional recovery. Silicon, however, cannot be used in humans because it causes a chronic inflammatory reaction. Therefore, in order to provide future clinical applications of thyroid hormone in ...
Tópico(s): Neuroscience and Neural Engineering
2007 - Mary Ann Liebert, Inc. | Journal of Neurotrauma
Douglas J. DeBoer, Karen A. Moriello, Lynn M. Volk, Rudolf Schenker, Jean Steffan,
Empirical evidence suggests that lufenuron has antifungal properties that may be useful for treatment of dermatophytosis in animals. Field reports have generally implied that lufenuron seems efficacious under some conditions, but ineffective in others. Variables such as environmental conditions, genetics, natural immunity, fungal strain variation, prior treatment, and others may explain the diversity in these reports. Two previous studies concluded that lufenuron was not effective in prevention ...
Tópico(s): Antifungal resistance and susceptibility
2004 - Wiley | Veterinary Dermatology
Tópico(s): Nonmelanoma Skin Cancer Studies
1937 - Springer Science+Business Media | Journal of Cancer Research and Clinical Oncology
Cassan N. Pulaski, John B. Malone, Catherine Bourguinat, Roger K. Prichard, Timothy G. Geary, Danielle Ward, Thomas R. Klei, Tal Guidry, George Davey Smith, Brooke Delcambre, Jonathan Bova, Jenny Pepping, James Carmichael, Rudolf Schenker, Romain Pariaut,
Strains of Dirofilaria immitis suspected of lack of efficacy (LOE) to macrocyclic lactone (ML) preventive drugs have been increasingly reported in dogs by practicing veterinarians since 2005 in the Lower Mississippi Delta region. If proven, and not controlled in the early stages, the emergence of ML drug resistance threatens to become a widespread problem in the US that may limit the effectiveness of current preventive drug treatment methods. To validate practice reports, a statewide survey of Louisiana ...
Tópico(s): Parasitic Diseases Research and Treatment
2014 - BioMed Central | Parasites & Vectors