1
|
Tielemans E, Rautenbach C, Besselaar JF, Beugnet F. Efficacy of a topical product combining esafoxolaner, eprinomectin and praziquantel against bedbug (Cimex lectularius) experimental infestations in cats. Parasite 2022; 29:59. [PMID: 36562440 PMCID: PMC9879142 DOI: 10.1051/parasite/2022060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 11/30/2022] [Indexed: 12/24/2022] Open
Abstract
Bedbugs (Cimex lectularius) are a persistent nuisance pest for humans and their home environment, and may also opportunistically feed on other mammals, including household pets like dogs and cats. NexGard® Combo is a topical endectoparasiticide product for cats combining esafoxolaner, an isoxazoline compound with insecticidal and acaricidal properties, the nematocide eprinomectin and the cestocide praziquantel. The insecticidal efficacy of this product was evaluated in cats experimentally infested with C. lectularius in a blinded, negative controlled and randomized study. Two groups of 7 cats were formed: an untreated control group, and a NexGard® Combo group treated once on Day 0 at the label dose. Cats were then challenged weekly, each with twenty unfed adult C. lectularius, on Days 1, 7, 14, 21 and 28. After close contact with the cat's skin for 15 min, live fed C. lectularius were collected and incubated for 96 h. The weekly efficacy evaluations were based on a comparison of the number of surviving bedbugs in the control and the treated group after 48, 72 and 96 h of incubation. The model was demonstrated to be robust as in the control group the average feeding rate after the 15-minute challenge was 94%, and as 96% of incubated bed bugs were alive after 96 hours of incubation. Significant live bedbug reductions were demonstrated in the Nexgard® Combo treated group: after 96 h of incubation, the reductions ranged from 80.6 to 88.0% during the Day 1 to Day 21 period, and dropped to 58% at Day 28.
Collapse
Affiliation(s)
- Eric Tielemans
- Boehringer-Ingelheim Animal Health 29 avenue Tony Garnier 69007 Lyon France
| | - Carin Rautenbach
- Clinvet International (Pty) Ltd. P.O. Box 11186, Universitas Bloemfontein 9321 Republic of South Africa
| | - JF Besselaar
- Clindata International (Pty) Ltd. P.O. Box 11186, Universitas Bloemfontein 9321 Republic of South Africa
| | - Frederic Beugnet
- Boehringer-Ingelheim Animal Health 29 avenue Tony Garnier 69007 Lyon France
| |
Collapse
|
2
|
Cutolo AA, Jardina DTG, De Vito GG, Grisi do Nascimento C, Heidmann MJ, Ferreira Nantes JD, Bassetto KV, Chagas IC, Pereira Junior EF, de Castro BG, Tielemans E. Efficacy of two endectoparasiticide products combining fipronil and (S)-methoprene or esafoxolaner with eprinomectin and praziquantel against fleas and intestinal helminths in cats naturally infested in Brazil. Parasite 2022; 29:12. [PMID: 35238771 PMCID: PMC8893013 DOI: 10.1051/parasite/2022012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 02/17/2022] [Indexed: 11/14/2022] Open
Abstract
Eprinomectin and praziquantel, nematodicide and cestodicide compounds, are both combined with the insecticide and acaricide compounds fipronil and (S)-methoprene in Frontline® Protect/Broadline®, or esafoxolaner in NexGard® Combo. These topical feline endectoparasiticide products were tested for efficacy against fleas and intestinal helminths in a field trial in Brazil. Flea- and/or helminth-infested domestic cats were treated twice at a monthly interval following label instructions: 160 cats with Frontline® Protect/Broadline® and 165 cats with NexGard® Combo. The flea and intestinal helminth infestations were evaluated using comb counts and copromicroscopy, respectively before first treatment for baseline value, then 9 and 30 days after each treatment for fleas, and 9 days after each treatment for helminths. Multiparasitism was very frequent at baseline, as amongst the 325 included cats, 295, 280, 86 and 93 cats were at least infested with Ctenocephalides fleas, Ancylostoma, Toxocara and Dipylidium caninum, respectively. Efficacies were calculated by comparing the geometric means at baseline and at post-treatment timepoints for each parasite genus/species. Inclusive of both products and of all evaluation timepoints, the Ctenocephalides, Ancylostoma, Toxocara and D. caninum efficacies were at least 98.3%, 99.8%, 99.8% and 96.3%, respectively. No adverse reactions were observed, except for a few instances of mild, transient, and self-resolving hypersalivation occurring on the day of treatment in both groups. This field trial demonstrated high-level efficacy of Frontline® Protect/Broadline® and NexGard® Combo against major parasites of cats in Brazil.
Collapse
Affiliation(s)
- Andre A Cutolo
- Boehringer-Ingelheim Animal Health, Fazenda São Francisco, 13140-000 Paulinia, SP, Brazil
| | - Debora T G Jardina
- Boehringer-Ingelheim Animal Health, Fazenda São Francisco, 13140-000 Paulinia, SP, Brazil
| | - Gabriela G De Vito
- ICON Global Strategic Solutions, 1308 avenue Doutor Cardoso de Melo, 04548-004 São Paulo, SP, Brazil
| | - Cristiano Grisi do Nascimento
- Convolution Divisão de Antiparasitários, 150 Lauro Valente Street, Cond Saint Gerard, 14022-048 Ribeirão Preto, SP, Brazil
| | - Maycon Junior Heidmann
- Universidade Federal de Mato Grosso, 1200 Alexandre Ferronato Avenue, 78557-267 Sinop, MT, Brazil
| | | | - Karolyne Vieira Bassetto
- Universidade Federal de Mato Grosso, 1200 Alexandre Ferronato Avenue, 78557-267 Sinop, MT, Brazil
| | - Isabella Cristina Chagas
- Universidade Federal de Mato Grosso, 1200 Alexandre Ferronato Avenue, 78557-267 Sinop, MT, Brazil
| | | | - Bruno Gomes de Castro
- Universidade Federal de Mato Grosso, 1200 Alexandre Ferronato Avenue, 78557-267 Sinop, MT, Brazil
| | - Eric Tielemans
- Boehringer-Ingelheim Animal Health, 29 avenue Tony Garnier, 69007 Lyon, France
| |
Collapse
|
3
|
Prullage J, Baker C, Mansour A, McCall S, Young D, Tielemans E. Efficacy of a novel topical combination of esafoxolaner, eprinomectin and praziquantel against Amblyomma americanum in cats. Parasite 2021; 28:25. [PMID: 33812457 PMCID: PMC8019551 DOI: 10.1051/parasite/2021021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 03/08/2021] [Indexed: 11/15/2022] Open
Abstract
Esafoxolaner, a purified enantiomer of afoxolaner with insecticidal and acaricidal properties, is combined with eprinomectin and praziquantel in NexGard® Combo, a novel topical endectoparasiticide product for cats. The efficacy of this novel formulation was assessed in two experimental studies against induced infestations with Amblyomma americanum, a tick species of major importance, highly prevalent in a large southeastern quarter of the United States. In each study, 10 cats were randomly allocated to a placebo control group and 10 cats to a novel formulation treated group. Infested cats were treated topically once at the minimum recommended dose. Both studies were designed to test curative efficacy on existing infestation, 72 h after treatment, and to test preventive efficacy, 72 h after subsequent weekly (Study #1) or fortnightly (Study #2) infestations for one month. For each infestation, all cats were infested with 50 unfed adult A. americanum. At each tick count, in both studies, at least 8 in 10 placebo control cats were infested with 13 (26%) or more live ticks, demonstrating adequate infestation throughout the studies. Curative efficacy of the novel formulation was 99% in both studies; preventive efficacy was 92% and 100% for at least one month.
Collapse
Affiliation(s)
- Joe Prullage
-
Boehringer-Ingelheim Animal Health, Missouri Research Center 6498 Jade Rd. Fulton MO
65251 USA
| | - Christine Baker
-
Boehringer-Ingelheim Animal Health 1730 Olympic Drive Athens GA
30601 USA
| | | | - Scott McCall
-
TRS Labs Inc. 215 Paradise Blvd Athens GA
30607-1151 USA
| | - David Young
-
Young Veterinary Research Services 7243 East Avenue Turlock CA
95380-9124 USA
| | - Eric Tielemans
-
Boehringer-Ingelheim Animal Health 29 avenue Tony Garnier 69007
Lyon France
| |
Collapse
|
4
|
Tielemans E, Prullage J, Tomoko O, Liebenberg J, Capári B, Sotiraki S, Kostopoulou D, Ligda P, Ulrich M, Knaus M. Efficacy of a novel topical combination of esafoxolaner, eprinomectin and praziquantel against ear mite (Otodectes cynotis) infestations in cats. Parasite 2021; 28:26. [PMID: 33812458 PMCID: PMC8019571 DOI: 10.1051/parasite/2021022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 03/08/2021] [Indexed: 11/15/2022] Open
Abstract
Esafoxolaner, a purified enantiomer of afoxolaner with insecticidal and acaricidal properties, is combined with eprinomectin and praziquantel, nematodicidal and cestodicidal compounds, in NexGard® Combo, a novel topical endectoparasiticide formulation for cats. The efficacy of this formulation was assessed against Otodectes cynotis in two laboratory studies conducted in South Africa and in the USA with local isolates, and in one field trial conducted in Europe. In each study, cats were randomly allocated to a placebo-treated control group and a novel formulation-treated group. In the laboratory studies, cats were treated at the minimum recommended dose; in the field trial, cats were treated at label dose. All included cats were diagnosed positive for O. cynotis prior to treatment by otoscopy. The main variable of efficacy was a comparison of the number of live O. cynotis collected in both ear canals of all cats in the treated and control groups, one month after treatment. Efficacy of the novel topical formulation exceeded 97% in the three studies. These studies demonstrated the high effectiveness of NexGard® Combo in cats for the treatment of O. cynotis infestations. No health abnormalities were attributed to the treatment in any of the studies.
Collapse
Affiliation(s)
- Eric Tielemans
- Boehringer-Ingelheim Animal Health 29 Avenue Tony Garnier 69007 Lyon France
| | - Joe Prullage
- Boehringer-Ingelheim Animal Health, Missouri Research Center 6498 Jade Rd. Fulton 65251 MO USA
| | - Otsuki Tomoko
- Boehringer Ingelheim Animal Health Japan Co Ltd ThinkPark Tower, 2-1-1 Osaki Shinagawa-ku 141-6017 Tokyo Japan
| | - Julian Liebenberg
- Clinvet International (Pty) Ltd. P.O. Box 11186 Universitas 9321 Bloemfontein Republic of South Africa
| | | | - Smaragda Sotiraki
- Veterinary Research Institute, ELGO-DIMITRA Campus Thermi 57001 Thessaloniki Greece
| | - Despoina Kostopoulou
- Veterinary Research Institute, ELGO-DIMITRA Campus Thermi 57001 Thessaloniki Greece
| | - Panagiota Ligda
- Veterinary Research Institute, ELGO-DIMITRA Campus Thermi 57001 Thessaloniki Greece
| | - Michael Ulrich
- Cheri-Hill Kennel & Supply Inc. 17190 Polk Rd. Stanwood 49346 MI USA
| | - Martin Knaus
- Boehringer-Ingelheim Vetmedica GmbH, Kathrinenhof Research Center Walchenseestr. 8–12 83101 Rohrdorf Germany
| |
Collapse
|
5
|
Gupta A, Baker C, Wang H, Targa N, Pfefferkorn A, Tielemans E. Target animal safety evaluation of a novel topical combination of esafoxolaner, eprinomectin and praziquantel for cats. Parasite 2021; 28:18. [PMID: 33812450 PMCID: PMC8019570 DOI: 10.1051/parasite/2021015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 03/08/2021] [Indexed: 11/14/2022] Open
Abstract
The safety profile of NexGard® Combo, a novel topical product for cats combining esafoxolaner, eprinomectin and praziquantel, for the treatment and prevention of internal and external parasites, was evaluated in kittens, in two margin-of-safety studies (Studies #1 and #2), and in an oral tolerance study (Study #3). In the margin of safety studies, kittens were dosed several times topically with multiples of the maximum exposure dose (1×): in Study #1, 3× and 5× doses four times at 2-week intervals; in Study #2, 1×, 3× and 5× doses six times at 4-week intervals. In Study #3, kittens were dosed orally once with a 1× dose. Furthermore, in Study #1, another group of kittens was dosed topically twice at a 4-week interval with a formulation of esafoxolaner as the sole active ingredient dosed at 23×. Physical examinations and clinical pathology analyses were performed throughout the studies, followed by necropsy and detailed histopathological evaluation in Studies #1 and #2. No significant treatment related effects were observed in the three studies, except for one occurrence of reversible neurological signs attributed to eprinomectin in one cat after the third 5× dose in Study #2, with clinical signs observed nine hours after dosing, pronounced for a few hours, significantly improved the next day, and absent 2 days after dosing. In conclusion, NexGard® Combo was demonstrated safe in kittens following repeated topical administrations and following oral ingestion, and very high topical doses of esafoxolaner were well tolerated.
Collapse
Affiliation(s)
- Aradhana Gupta
- Boehringer-Ingelheim Animal Health 3239 Satellite Blvd Duluth 30096 GA USA (until 2020)
| | - Christine Baker
- Boehringer-Ingelheim Animal Health 1730 Olympic Drive Athens 30601 GA USA
| | - Hailun Wang
- Boehringer-Ingelheim Animal Health 3239 Satellite Blvd Duluth 30096 GA USA (until 2020)
| | - Norba Targa
- Boehringer-Ingelheim Animal Health 1730 Olympic Drive Athens 30601 GA USA
| | | | - Eric Tielemans
- Boehringer-Ingelheim Animal Health 29 Avenue Tony Garnier 69007 Lyon France
| |
Collapse
|
6
|
Jacquot V, Buellet P, Letendre L, Tong W, Li H, Tielemans E. Pharmacokinetics of a novel endectoparasiticide topical formulation for cats, combining esafoxolaner, eprinomectin and praziquantel. Parasite 2021; 28:19. [PMID: 33812451 PMCID: PMC8019567 DOI: 10.1051/parasite/2021014] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 03/08/2021] [Indexed: 12/04/2022] Open
Abstract
Esafoxolaner, a purified enantiomer of afoxolaner with insecticidal and acaricidal properties, is combined with eprinomectin and praziquantel in NexGard® Combo, a novel topical endectoparasiticide formulation for cats. The parasiticide potencies of topical esafoxolaner, eprinomectin and praziquantel, are based on transcutaneous absorption, systemic distribution, and exposure of respective target parasites. For each compound, the pharmacokinetic profile, non-interference, dose linearity/proportionality after one administration, and the accumulation and time to reach a steady state after repeated monthly administrations of the novel formulation, were investigated. After one topical application of NexGard® Combo at the minimum recommended dose, the mean plasma concentration of esafoxolaner immediately reached (and remained at) a level supporting rapid onset and sustained efficacy against ectoparasites for at least 1 month. The mean Cmax, Tmax, T1/2, and the topical bioavailability of esafoxolaner were 130 ng/mL, 7.1 days, 21.7 days and 47.2%, respectively, and the plasma profiles of eprinomectin and praziquantel supported their known endoparasiticide properties. No relevant interference between the three compounds was observed. Dose proportionality was demonstrated for the three compounds over a range of 0.5× to 2× the minimum recommended dose. Steady state after repeated monthly administrations was reached by the second dose for praziquantel and by the fifth dose for esafoxolaner and eprinomectin. Accumulation was limited and drug plasma concentrations were maintained within a safe level.
Collapse
Affiliation(s)
- Virginie Jacquot
-
Boehringer-Ingelheim Animal Health 29 avenue Tony Garnier 69007 Lyon France
| | - Prescillia Buellet
-
Boehringer-Ingelheim Animal Health 29 avenue Tony Garnier 69007 Lyon France
| | - Laura Letendre
-
Boehringer-Ingelheim Animal Health 631 Route 1 North Brunswick NJ 08902 USA
| | - Wei Tong
-
Boehringer-Ingelheim Animal Health 631 Route 1 North Brunswick NJ 08902 USA
| | - Henry Li
-
Boehringer-Ingelheim Animal Health 631 Route 1 North Brunswick NJ 08902 USA
| | - Eric Tielemans
-
Boehringer-Ingelheim Animal Health 29 avenue Tony Garnier 69007 Lyon France
| |
Collapse
|