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Haemonchus contortus is arguably one of the most economically important and ubiquitous parasites of livestock globally and commonly involved in cases of anthelmintic resistance. Here, we performed reciprocal genetic crosses using susceptible (MHco3(ISE)) and multiple anthelmintic resistant (MHco18(UGA2004)) H. contortus isolates. Resultant admixed populations were designated MHco3/18 or MHco18/3, where the lead isolate reflects the origin of the females. Three independent filial generations were generated for each cross, which were subjected to bioassays, molecular approaches and population genetic analyses to investigate the phenotypic and genotypic inheritance of benzimidazole (BZ) resistance at each stage. A panel of microsatellite markers confirmed the success of the genetic cross as markers from both parents were seen in the F1 crosses. Egg hatch tests revealed a stark difference between the two F1 crosses with ED50 estimates for MHco18/3 being 9 times greater than those for MHco3/18. Resistance factors based on ED50 estimates ranged from 6 to 57 fold in the filial progeny compared to MHco3(ISE) parents. Molecular analysis of the F167Y and F200Y SNP markers associated with BZ resistance were analysed by pyrosequencing and MiSeq deep amplicon sequencing, which showed that MHco3/18.F1 and MHco18/3.F1 both had similar frequencies of the F200Y resistant allele (45.3% and 44.3%, respectively), whereas for F167Y, MHco18/3.F1 had a two-fold greater frequency of the resistant-allele compared to MHco3/18.F1 (18.2% and 8.8%, respectively). Comparison between pyrosequencing and MiSeq amplicon sequencing revealed that the allele frequencies derived from both methods were concordant at codon 200 (rc = 0.97), but were less comparable for codon 167 (rc = 0.55). The use of controlled reciprocal genetic crosses have revealed a potential difference in BZ resistance phenotype dependent on whether the resistant allele is paternally or maternally inherited. These findings provide new insight and prompt further investigation into the inheritance of BZ resistance in H. contortus., Graphical abstract Image 1, Highlights • Reciprocal cross used to investigate benzimidazole (BZ) resistance. • Phenotypic and genotypic tools combined for analysis. • Inheritance of BZ resistance influenced by maternal &/or cytoplasmic mechanisms. • Double homozygous resistant genotypes at F167Y and F200Y detected on β−tubulin gene.

The objective of this study was to assay the ovicidal and larvicidal effects of two hydroalcoholic extracts (HA-E) and their aqueous fractions (Aq-F) and organic fractions (EtOAc-F) from Lippia graveolens (leaves) and Delonix regia (flowers) against the parasitic nematode Haemonchus contortus. The egg hatching inhibition test (% EHI) and mortality of infective larvae (% mortality) were used as biological models. The treatments of each plant (mg/mL, % EHI, and % mortality) were assigned as follows: HA-E (12.5-50, EHI; 25-200, mortality), Aq-F (6.25-25.00, EHI; 12.5-50, mortality), EtOAc-F (0.37-25, EHI; 3.12-50, mortality), negative controls (distilled water and methanol at 2% and 4%), and positive control (ivermectin at 5 mg/mL). Data were analyzed using a completely randomized design through an analysis of variance, considering the EHI and mortality percentages as the response variables. To identify the secondary metabolites, both plants were subjected to qualitative chemical analysis and HPLC. The results showed that both plants exhibited highly ovicidal and larvicidal effects. The bipartition in each HA extract allowed the increase of the anthelmintic effect in EtOAc-F, achieving a total ovicidal activity at 1.56 mg/mL and a larvicidal effect higher than 90% at 25 mg/mL. The qualitative chemical profile of both vegetal species identified alkaloids, flavonoids, condensed tannins, terpenes, and saponins. These results suggest that either L. graveolens leaves or D. regia flowers could be potential candidates for the control of parasitic gastrointestinal nematodes in small ruminants. However, in vivo studies with experimental animals to evaluate their possible toxicity and anthelmintic effect are necessary.

Traditional healers and ethnoveterinary therapists use severalmedicinal plants, such asRumex crispusL., to treatendoparasiteinfections.R. crispushas been established by researchers to be effective agasint a few parasitic worms. In this study, we evaluated the potency ofR. crispusextracts on the model organism,Caenorhabditis elegansand the bioactive compounds of the extracts were also identified. The solvent extracts ofR. crispuswere tested againstC. elegansfor up to 72h. The effect of the extracts onC. eleganswas examined using light microscopy (LM) and scanning electron microscopy (SEM). LM and SEM analysis showed damage on the body wall, reduced body and slight modifications of the nematode organs. Thelethalitytest reveals a significant reduction in the viability of the nematode with the water extract of leaf (LF-WAE), among others, having the strongest potency against the nematode, with 83% lethality. Anlysis done with Fourier-transform infrared spectroscopy (FTIR) spectra reveals various characteristic vibration bands and fingerprint bands at 3400–600cm−1, identifying phenols, organic acids, aromatics, amines, among others in the plant. The compounds were identified with liquid chromatography-mass spectrometry (LC-MS), under the categories of flavonoids, steroidalalkaloidsand proanthocyanidin. In conclusion, this study confirmed thatR. crispushas anthelmintic potential, using standardisedC. elegansmodels as a tool and suggests that there could be novel compounds yet to be explored in the studied plant that could be of great benefit to livestock and humans.

Anthelmintic drugs have been used strategically in livestock reared in the tropics. These drugs have been used in the treatment of endoparasitism which have resulted in an increase in the animals’ performance. The agouti (Dasyprocta leporina) is a neo-tropical rodent with the potential for domestication and has been farmed intensively in Trinidad. However, the objective of this research was to investigate the effect of anthelmintic use of the growth performance of the agouti. In searching the literature, it was found that this type of study on the agouti has not been done. In this experiment fourteen weaned agoutis weighing 1kg were divided into two groups randomly. The first group (T1) was not given any anthelmintic treatment but the second group (T2) was treated with Endovet Ces® subcutaneously every three months. There were no significant differences (p > 0.05) between the two groups in the carcass weight, weight gain, dressing percentage (hot and cold), heart, lungs, skin, head and feet. However, a significant difference (p < 0.05) was seen between groups in the weight of liver and pluck. To the authors knowledge this is the first time that carcass parameters has been presented in literature. The live weight of the animals at the end of the experiment ranged from 2.4 kg to 2.6 kg and animals had a dressing percentage of 57% to 55%. The results are suggestive that the use of anthelmintic drugs in agoutis reared intensively had no significant effect on weight gain and dressing percentage. Resumo Drogas anti-helmínticas têm sido usadas estrategicamente em rebanhos criados nos trópicos. Essas drogas têm sido utilizadas no tratamento do endoparasitismo, o que resultou em um aumento no desempenho dos animais. A cutia (Dasyprocta leporina) é um roedor neotropical com potencial para domesticação e tem sido criada intensivamente em Trinidad. Porém, o objetivo desta pesquisa foi investigar o efeito do uso de anti-helmínticos no desempenho de crescimento da cutia. Através de uma busca na literatura, constatou-se que esse tipo de estudo na cutia não foi realizado. Neste experimento, quatorze cutias desmamadas pesando 1kg foram divididas em dois grupos aleatoriamente. O primeiro grupo (T1) não recebeu nenhum tratamento anti-helmíntico, mas o segundo grupo (T2) foi tratado com Endovet Ces® por via subcutânea a cada três meses. Não houve diferenças significativas (p> 0,05) entre os dois grupos no peso da carcaça, ganho de peso, porcentagem de cobertura (quente e frio), coração, pulmão, pele, cabeça e pés. No entanto, uma diferença significativa (p

The agouti (Dasyprocta leporina) is a rodent that is found in the Neo-tropical region. This animal is hunted for its meat but has recently been reared in captivity as a source of meat protein in rural communities. A 20-month experiment was carried out to evaluate the effect of an anthelmintic on the reproductive performance of the agouti (Dasyprocta leporina) reared in captivity. This experiment was conducted in the humid tropics of Trinidad and Tobago. Sixteen animals (15 females, 1 male) placed in each of the two treatment groups in a completely randomized study design. In treatment 1 (T1) animals were given subcutaneous injections of Endovet Ces® (Ivermectin/Praziquantel) at 0.2 mg/kg every three months. Treatment 2 (T2) was the negative control group where animals were not exposed to an anthelmintic. Reproductive data were collected at parturition which included birth weight, litter weight, litter size and gender of offspring. The results showed that there was no statistical difference (p > 0.05) between the treatment groups with respect to birth weight, litter weight, litter size and gender. However, agoutis that were dewormed had a higher birth weight (220.24 g vs 209.1 g) and litter weight (369.8 g vs 343 g). The same values were obtained for the litter size (1.7 vs 1.7) and animals that were dewormed had a higher female offspring to male offspring (2.41:1 vs 1.11:1). This experiment demonstrated that the use of an anthelmintic strategically in the management of captive reared agoutis had no statistical effect (p > 0.05) on the reproductive parameters. Therefore, these animals can be kept in captive conditions without being dewormed and produce efficiently with proper feeding and housing management. Resumo A cutia (Dasyprocta leporina) é um roedor que se encontra na região neo-tropical. Esse animal é caçado por sua carne, mas recentemente foi criado em cativeiro como fonte de proteína de carne em comunidades rurais. Um experimento de 20 meses foi realizado para avaliar o efeito de um anti-helmíntico no desempenho reprodutivo de cutias (Dasyprocta leporina) criadas em cativeiro. Esse experimento foi conduzido nos trópicos úmidos de Trinidad e Tobago. Dezesseis animais (15 fêmeas, 1 macho) colocados em cada um dos dois grupos de tratamento em um desenho de estudo completamente randomizado. No tratamento 1 (T1) os animais receberam injeções subcutâneas de Endovet Ces® (Ivermectina / Praziquantel) na dose de 0,2 mg / kg a cada três meses. O tratamento 2 (T2) foi o grupo de controle negativo onde os animais não foram expostos a um anti-helmíntico. Os dados reprodutivos foram coletados no parto, incluindo peso ao nascer, peso da ninhada, tamanho da ninhada e sexo da prole. Os resultados mostraram que não houve diferença estatística (p > 0,05) entre os grupos de tratamento com relação ao peso ao nascer, peso da ninhada, tamanho da ninhada e sexo. No entanto, cutias desparasitadas tiveram maior peso ao nascer (220,24 g vs. 209,1 g) e peso da ninhada (369,8 g vs. 343 g). Os mesmos valores foram obtidos para o tamanho da ninhada (1,7 vs. 1,7) e os animais que foram desparasitados tiveram uma prole feminina maior do que a prole masculina (2,41: 1 vs. 1,11: 1). Esse experimento demonstrou que o uso de anti-helmíntico estrategicamente no manejo de cutias criadas em cativeiro não teve efeito estatístico (p > 0,05) sobre os parâmetros reprodutivos. Portanto, esses animais podem ser mantidos em cativeiro sem serem vermifugados e produzir de forma eficiente com alimentação adequada e manejo do alojamento.

Anthelmintic resistance (AR) has thus far only rarely been reported for intestinal helminths of dogs and cats, in contrast to parasites of livestock and horses. We highlight possible reasons for this striking and important discrepancy, including ecological, biological and genetic factors and/or intervention regimens of key intestinal helminths concerning both host groups. In view of the current knowledge related to the genetics, mechanisms and principles of AR development, we point at issues which in our view contribute to a comparatively lower risk of AR development in intestinal helminths of dogs and cats. Finally, we specify research needs and provide recommendations by which, based on the available information about AR in ruminant and equine helminths, the development of AR in dog and cat helminths may best be documented, prevented or at least postponed., Graphical abstract Image 1, Highlights • Identifying causes of differences in anthelmintic resistance between livestock and dogs & cats. • Discussion of roles of AR mechanisms, genetics and husbandry in delayed AR evolution in dogs & cats. • Research needs for improved tools to monitor AR development in dogs & cats.

Infections by parasitic nematodes cause large health and economic burdens worldwide. We use anthelmintic drugs to reduce these infections. However, resistance to anthelmintic drugs is extremely common and increasing worldwide. It is essential to understand the mechanisms of resistance to slow its spread. Recently, four new parasitic nematode beta-tubulin alleles have been identified in benzimidazole (BZ) resistant parasite populations: E198I, E198K, E198T, and E198stop. These alleles have not been tested for the ability to confer resistance or for any effects that they might have on organismal fitness. We introduced these four new alleles into the sensitive C. elegans laboratory-adapted N2 strain and exposed these genome-edited strains to both albendazole and fenbendazole. We found that all four alleles conferred resistance to both BZ drugs. Additionally, we tested for fitness consequences in both control and albendazole conditions over seven generations in competitive fitness assays. We found that none of the edited alleles had deleterious effects on fitness in control conditions and that all four alleles conferred strong and equivalent fitness benefits in BZ drug conditions. Because it is unknown if previously validated alleles confer a dominant or recessive BZ resistance phenotype, we tested the phenotypes caused by five of these alleles and found that none of them conferred a dominant BZ resistance phenotype. Accurate measurements of resistance, fitness effects, and dominance caused by the resistance alleles allow for the generation of better models of population dynamics and facilitate control practices that maximize the efficacy of this critical anthelmintic drug class., Graphical abstract Image 1, Highlights • Four newly identified parasitic nematode beta-tubulin alleles confer benzimidazole resistance. • The four newly identified alleles do not confer deleterious fitness consequences. • Five beta-tubulin alleles confer recessive benzimidazole resistance.

Ancylostoma caninum is one of the most important hookworms in dogs. A study revealed that the prevalence of ancylostomiasis in Indonesia is relatively high. However, cases of persistent ancylostomiasis in dogs were reported, indicating the possibility of anthelmintic resistance. The aim of this review is to provide an overview of the anthelmintic potential of plants preclinically against A. caninum based on related research articles. This review retrieved 14 articles from 2001 to 2021 investigating 19 different plants. Momordica charantia, Diospyros anisandra, and Citrus aurantiifolia hold a promising prospect as anthelmintic against A. caninum. This review found aspects of those medicinal plants that need to be investigated deeper to improve our understanding of the matter. In vitro results in this review have not yet been tested in in vivo trials, which are essential in determining the efficacy and safety of the use of these medicinal plants and also to justify its clinical application.

Cryptococcosis is a systemic mycosis caused by pathogenic yeasts of the Cryptococcus genus and the second biggest cause of morbidity and mortality in individuals with AIDS. Cryptococcal meningitis is the most severe form of the disease, with high lethality rates. Currently, only three antifungals drugs are approved for the treatment of cryptococcosis, which present high toxicity, low efficacy, high costs, and limited availability in several countries. The need for new antifungals for the treatment of systemic mycosis is clear; however, drug research and development is costly and time-consuming. Drug repositioning is a strategy that has been promising for the development of new therapeutic alternatives for diseases that suffer from scarce therapeutic resources, such as cryptococcosis, as it presents a considerable reduction in costs, risks, and research time. Some drug candidates for repositioning share structural similarities with each other that may reflect a scaffold in the discovery of new anticryptococcal agents. The anthelmintics drugs albendazole, flubendazole, mebendazole, and fenbendazole showed potent in vitro antifungal activity apparently related to the benzimidazole scaffold present in these drugs. Thus, this non-systematic review discusses recent data about benzimidazole anthelmintic drugs as promising candidates for repositioning in the treatment of cryptococcosis.

Most fruits and vegetables contain flavonoids, a type of phytonutrient. As well as carotenoids, they're responsible for fruits and vegetable brilliant hues. Some other phytonutrients such as flavonoids are strong antioxidants with anti-inflammatory and immune properties. There are many flavonoids, including anthocyanins, flavones, flavonols, flavonoids, and isoflavonoids. Quercetin and chrysin were chosen for the investigation. Humans and other animals can contract Helminthiasis (helminthiases), sometimes known as worm infection. Tapeworms, roundworms, and flukes are only a few of the parasites that exist. Skeletal muscle relaxants are used to treat spasticity caused by upper motor neuron syndromes and muscle discomfort or musculoskeletal spasms created by peripheral disturbances. Samples of quercetin and chrysin were generated in the presence of 0.5% SCMC suspension at concentrations of 10, 20, 30, and 40 mg/ml, and then analyzed. To keep track of photocell beam disruptions, a six-digit counter was utilized (locomotor activity). It was time to turn on the actophotometer and examine the locomotor behavior of each rat for five minutes. The basal activity levels of all the animals were recorded. Keywords: Flavonoids, Anthelmintic, Skeletal Muscle relaxant, animal models

Infection with gastrointestinal helminths is widely spread among ruminant causing severe losses and adversely affects the livestock husbandry. Synthetic chemotherapeutics have been utilized throughout years, as a means of combating helminthiasis. Anthelmintic resistance (AR) has a serious concern on livestock industry which, mainly arises as outcome of misuse, improper dosing and frequent utilization of the synthetic drugs.Various gastrointestinal helminths have the capability to survive the therapeutic dose of anthelmintics and become resistant to the major anthelmintic classes. Early diagnosis might delay or reduce the risk of AR. Conventional phenotyping methods were commonly used for detection of anthelmintic resistant helminths, but appeared to lack of sensitivity, especially when the frequency of resistant allele is very low. Several molecular assays were carried out to detect the AR with greater accuracy. Sustainable effective preventive and control measures for gastrointestinal helminths infection remain the corner stone to overcome AR. Rational use of anthelmintics with keeping unexposed proportion of worm populations, could have the potentiality to maintain and prolong the efficacy of anthelmintics. Several alternative anthelmintic treatments might offer valuable solutions either alone or adjunct to synthetic drugs to dilute the spread of resistance alleles among the helminths population. This article reviews current status of various diagnostic methods and control measures for anthelmintic resistant gastrointestinal helminths infecting ruminants and tries to present a practical protocol to avoid or delay the development of AR.

In the last few years there has been an exponential growth in the field of herbal medicine and these drugs are gaining popularity both in developing and developed countries because of their natural origin and less side effects. Many traditional medicines in use are derived from medicinal plants, minerals and organic matter .The World Health Organization (WHO) has listed 21,000 plants, which are used for medicinal purposes around the world. .The current review focuses on herbal drug preparations and plants used in the treatment of different chronic dieses in the world. The use of Ayurvedic medicines is common in both adults and children and is increasing in many areas of the world. This paper will discuss the benefits with use of herbal medicines as Antipyretic, Antiulcer, Anti-diabetic and Anti-cancerous activity.

Purpose In the fight against anthelmintic resistance, targeted selective treatments (TSTs), where only a small percentage of a flock receives treatment, have become increasingly popular. Overall, implementation of such treatments can be based on various parameters including Body condition score (BCS). As infection with non-bloodsucking nematodes, frequently encountered on sheep farms in the central Mediterranean basin, commonly causes bodyweight reduction, the aim of this research is to evaluate the effectiveness of BCS as a parameter for the implementation of TSTs in lactating dairy sheep with subclinical gastrointestinal nematode (GIN) infections from the island of Sardinia, Italy. Methods Faecal samples from 1012 ewes divided into 2 groups (third and fifth month of lactation) were collected and their BCS recorded. Faecal egg counts and coprocultures were performed for the assessment of the GIN burden and identification of present species. Results An overall GIN prevalence of 85.4% with a mean eggs per gram (EPG) of faeces of 210.1 ± 347.3 was found. Teladorsagia spp. and Trichostrongylus spp. were the GIN genera most identified. Overall, animals with the lowest BCS had the highest EPG values and a negative correlation (r = − 0.163) between the EPG values and BCS of the studied animals was found, which was most significant for older sheep. Conclusion This research confirmed BCSs and EPG values for GIN in sheep to be negatively correlated, particularly in older ewes. Application of TSTs for lactating sheep with a BCS

Schistosomiasis is a major public health problem that afflicts more than 240 million individuals globally, particularly in poor communities. Treatment of schistosomiasis relies heavily on a single oral drug, praziquantel, and there is interest in the search for new antischistosomal drugs. This study reports the anthelmintic evaluation of carvacryl acetate, a derivative of the terpene carvacrol, against Schistosoma mansoni ex vivo and in a schistosomiasis animal model harboring either adult (patent infection) or juvenile (prepatent infection) parasites. For comparison, data obtained with gold standard antischistosomal drug praziquantel are also presented. Initially in vitro effective concentrations of 50% (EC50) and 90% (EC90) were determined against larval and adult stages of S. mansoni. In an animal with patent infection, a single oral dose of carvacryl acetate (100, 200, or 400 mg/kg) caused a significant reduction in worm burden (30–40%). S. mansoni egg production, a process responsible for both life cycle and pathogenesis, was also markedly reduced (70–80%). Similar to praziquantel, carvacryl acetate 400 mg/kg had low efficacy in pre-patent infection. In tandem, although carvacryl acetate had interesting in vitro schistosomicidal activity, the compound exhibited low efficacy in terms of reduction of worm load in S. mansoni-infected mice.

Increasing resistance against classical anthelmintic drugs makes discovering new anthelmintic compounds from natural plants important. Nigella sativa (N. sativa) is used as a medicinal plant overall the world and is known to have anthelmintic activity. Caenorhabditis elegans (C. elegans), a common cost-effective model organism that is easily maintained, is useful to determine the anthelmintic activity of new compounds derived from natural products. In our study we aimed to evaluate through toxicity assays the nematocidal activity of N. sativa on C. elegans during its larval and adult stages. Different concentrations of N. sativa oil (900, 450 and 270 mg/mL) were tested and toxicity assessments were done under stereomicroscope by counting the number of surviving nematodes. This study showed that N. sativa essential oil significantly decreases survival of C. elegans in both larval and adult stages at 900 mg/mL final concentration. Larval-stage worms were more sensitive to N. sativa essential oil than were adults. We recommend further studies on other effects of N. sativa on C. elegans after removing the toxic compound(s) from the extract. The further discovery of N. sativa essential oil compounds responsible for anthelmintic activity and determination of their mechanisms of toxicity can pave the way toward new medicines. WOS:000691592500005

Background The gastrointestinal helminth, Teladorsagia circumcincta, is one of the major health risks and production-limiting diseases in small ruminant populations, particularly in temperate regions. With the increasing importance of disease management and recruited anthelmintic resistant types, accurate approaches are needed for the diagnosis of the infection in the host. Due to uncertain results using faecal examinations, the ELISA method was indicated for the detection of nematode antigenic materials. Despite some promising results, problems were described in terms of test specificity and cross-reactions. Therefore, this study aimed to evaluate the IgG response to worm somatic and excretory/secretory (ES) products using western blot analysis and an indirect ELISA for the detection of T. circumcincta infection in sheep. Results Based on the immuno-reactivity analysis, immunogenic fractions with molecular weights (MWs) of approximately 60, 75 and 100 kDa were detected in somatic content and two antigens of about 63 and 75 kDa in ES material. Accordingly, a specific product at 75 kDa had the strongest reaction and appeared as the most common antigenic protein. In ELISA, all the sera from the infected sheep revealed the OD rates above the calculated cut-off value with about two-fold greater average. Negative control samples were also specifically recognized with the mean OD rate of about 1/3 of the estimated cut-off value. The cross-reaction test, using rabbit anti-T. circumcincta IgG, did not show reactivity with the ES antigens of other prevalent nematodes including Haemonchus contortus, Protostrongylus rufescens and Marshallagia marshalli. In contrast, a strong positive reaction was observed with the somatic antigens of M. marshalli. Conclusions The results of this study indicated that the indirect ELISA method using the ES content enables distinguishing the T. circumcincta infected sheep with high specificity. Those antigenic ES peptides with 63 and particularly 75 kDa MWs should be further investigated due to the potential for serological diagnostic methods and immunoprotective targets in the host.

Purpose. To estimate the parameters of infestation of Helix aspersa by nematodes, experimentally identify the optimal concentration of anti-helminthic drugs and assess their effectiveness. Methodology. The experimental work on the development of therapeutic measures against nematodes of Helix aspersa (Müller) lasted for 15 days. The results of the experiments were evaluated by the following indicators: extensiveness and intensity of parasite infestation; survival of mollusks,%. Feeding activity was assessed by the relative amount of feed the mollusks ate per day. At the beginning of the experiments, histological examinations of mollusk tissues were performed. Selected samples were preserved in 4% formalin solution and then histological sections were made, which were than frozen with subsequent staining with hematoxylin-eosin. Histological analysis was performed using a light microscope at 8x and 40x magnification and a Sciencelab T500 5.17 M photographic digital camera. Assessment of changes in the histostructure was performed visually and using morformetric analysis on mollusk intestine samples. Two variants of the experiment with albendanzole (variant № 2 and 3) and control were evaluated. Findings. According to the results of the experiments, the best indicators of the anthelmintic effect and survival of snails were obtained using albendazole added to compound feed at a concentration of 0.02% of the live weight of mollusks. At this concentration, complete destruction of mature individuals of Alloionema appendiculatum was noted, as well as a decrease in the infection of snails with helminth eggs from 100% to 10%. The study of the histostructure of tissues and organs of mollusks showed that the use of albendazole at concentrations of 0.01% and 0.02% did not cause noticeable pathological changes in the muscles and brain of mollusks. However, certain structural abnormalities were observed in the cells of the intestinal and liver epithelium, which were detected as vacuolization of the cytoplasm, destruction of cell membranes, lysis and pycnosis of nuclei. The relative number of such cells with the pathology was about 10-15% when using 0.01% albendazole, and increased to 30-50% when using albendazole at a concentration of 0.02% of the live weight of snails. No noticeable anthelmintic effect was found when using trematozole. Scientific novelty. For the first time, the therapeutic effect and the optimal scheme of deworming of mollusks Helix aspersa infected with the parasitic nematode Alloionema appendiculatum were determined experimentally. Practical significance. The obtained results are of interest to enterprises engaged in snail farming. Key words: mollusk Helix aspersa Muller, nematodosis, extensiveness and intensity of invasion, anthelmintic drugs, morpho-histological parameters.

Lactation is discussed as a physiological covariate which may influence the exposure characteristics of systemically acting drugs including macrocyclic lactones and potentially alter their pharmacological response. This study characterizes for the first time in the same study, the plasma profile and therapeutic anthelmintic efficacy of eprinomectin 5 mg/ml solution (EPRINEX® Multi, Boehringer Ingelheim) administered as a pour-on at 1 mg per kg body weight to lactating dairy goats. The study was conducted in compliance with VICH GCP and anthelmintic efficacy evaluation guidelines and included 20 goats harboring induced adult gastrointestinal and pulmonary nematode infections. The goats were blocked on pre-treatment body weight and randomly allocated either to remain untreated (control) or to be eprinomectin-treated. Plasma samples to determine the plasma disposition kinetics of eprinomectin (B1a component) were obtained at intervals up to 14 days following treatment when the animals were necropsied for parasite enumeration and identification. Basic pharmacokinetic parameters of eprinomectin determined in the ten eprinomectin-treated goats were as follows: AUClast , 23.8 ± 9.7 day*ng/ml and Cmax , 5.35 ± 2.27 ng/ml; individual maximum plasma concentrations were observed from 8 to 48 h after treatment (median Tmax , 0.5 days). Topical eprinomectin treatment efficacy, based on significant (p

Objective: Investigation of Anthelmintic effect of Neolamarckia Cadamba fruit extracts (Ethanol, Aquaous, Phenyl ether, Chloroform) in Ascariasis. Methods: The experiment was conducted on an adult Indian earthworm, Eiseniafoetida, owing of its morphological and physiological similarities to the human intestine roundworm parasite. Six sets of six earthworms were discharged sequentially into different extracts of N. cadamba fruits at dose levels of 5,10,15,20, and 25 mg/ml, respectively, and 25 mg/ml of albendazole solutions. Albendazole was employed as the standard reference medication. Results: The results showed that Ethanolic extract has the greatest degree of activity. When compared to any other extract or conventional medicine, it produces a paralytic effect sooner and has a shorter time to death (Albendazole). An ethanol extract included alkaloid, saponin, tannins, flavonoids, proteins, and amino acids. As a result, it is possible to infer that the ethenolic fruit extract of Neolomarckia Cadamba showed much more anthelmintic activity against Indian earthworms than the usual treatment (Albendazole). Conclusion: The solvents Ethanol, Chloroform, Phenyl Ether, and Aquaous were used to extract the Neolamarckia Cadamba. The results showed that Ethanolic extract has the greatest degree of activity. When compared to any other extract or conventional medicine, it produces a paralytic effect sooner and has a shorter time to death (Albendazole).

The purpose of the research is to evaluate the effect of albendazole as part of the supramolecular complex with disodium salt of glycyrrhizic acid obtained by solid-phase mechanical treatment.Materials and methods. The anthelmintic activity of the complex and its effect on the host organism was assessed on hamsters infected with Opisthorchis felineus by single and 7-fold administration at 45 days after infection. After 21 days, we counted the number of helminthes in the liver, and conducted a morphometric analysis of the liver and spleen, and detected biochemically the activity of alanine aminotransferase and aspartate aminotransferase in the animals’ blood serum.Results and discussion. The number of O. felineus significantly decreased after 7-fold, but not a single, administration of albendazole (ABZ) and ABZ-Na2GA complex (1 : 10). The administrated substances had no effect on the weight gain of the animals and the daily consumption of the pellets. At the same time, ABZ only as part of the complex normalized the weight of the liver and spleen in hamsters infected with O. felineus and reduced the alanine aminotransferase activity. Consequently, a longer administration of ABZ as part of the complex with disodium glycyrrhizinate has not only a pronounced anthelmintic effect, but also improves some of the physiological parameters of hamsters to a greater extent than a pure substance.

Parasitic gastroenteritis (PGE) is one of the most important parasitic diseases that causes economic losses and health problems in ruminants. PGE causes a drop in milk, meat, and wool production in addition to decreasing animal fertility and sometimes leading to animal death. Conventional anthelmintics used for animal treatment are expensive, especially for farmers in developing countries. Moreover, the concern of anthelmintic resistance to these synthetic drugs is rising. Therefore, this study aimed to evaluate the anthelmintic activity of plant extract pomegranate (Punica granatum L) peel extract (PPE) against PGE infestations among ruminants. A total of 120 ruminants of different species (20 cattle, 12 buffalos, 68 sheep, and 20 goats) were examined for PGE eggs in their fecal samples. The animals under experiment were divided into four groups: the first group (negative control) was not given any drugs, the second group was given ivermectin (0.5 ml/25 kg bwt) (positive control 1), the third group was given albendazole (2.5 mg active principle/kg bwt) (positive control 2), and the fourth group was given PPE (200 mg/kg bwt). Fecal egg count (FEC) was performed on day 0 prior to the 1st dose of treatment. On day 15, an additional treatment (with the same doses) was administered and FEC was performed on days 7 and 21. Our results showed that on the 7th day of the experiment, there was an increase in FEC in the negative control group by 5%, while in the second, third, and fourth groups, there was a decrease in FEC with 95%, 90%, and 85% respectively. On the 21st day (7 days from the second dose), there was an increase in FEC in the control group by a 10% and 100% reduction in FEC in both the second and third groups. While in the fourth group, there was a decrease in FEC by 97%. In conclusion, PPE could be used as a safe, cheap, and effective natural anthelmintic against PGE.

Most anthelmintics were discovered through in vivo screens using animal models of infection. Developing in vitro assays for parasitic worms presents several challenges. The lack of in vitro life cycle culture protocols requires harvesting worms from vertebrate hosts or vectors, limiting assay throughput. Once worms are removed from the host environment, established anthelmintics often show no obvious phenotype - raising concerns about the predictive value of many in vitro assays. However, with recent progress in understanding how anthelmintics subvert host-parasite interactions, and breakthroughs in high-content imaging and machine learning, in vitro assays have the potential to discern subtle cryptic parasite phenotypes. These may prove better endpoints than conventional in vitro viability assays.

During the previous decades, the indiscriminate use of anthelmintics for the control of gastrointestinal nematodes has generated anthelmintic resistance in different parts of the world. It is neces...

Background: Ethnobotanical investigations conducted in Turkey demonstrated that Jasminum fruticans L. extract and fruit juice had been used against parasites in animals. In this study, the possible antihelmintic activity of various J. fruticans extracts contributing to its traditional use, was relatively assessed. In addition, the antioxidant potentials and phytochemical composition of the extracts were investigated since there is a relationship between helminthiasis, oxidative stress and phenolic metabolites. Methods: In this study, aerial parts of J. fruticans were subsequently extracted using n-hexane, ethyl acetate (EtOAc) and methanol (MeOH). In vivo anthelmintic activitiy of the extracts was compared with albendazole used as a reference in adult earthworms. Various methods, including free radical scavenging and metal-related activity assays, were used to assess the antioxidant capacity of the above-mentioned extracts. Assessment of phenolic composition was accomplished through total phenolic, phenolic acid, and flavonoid content assays as well as liquid chromatography-mass spectrometry (LC-MS/MS) using multiple reaction monitoring (MRM) scan modes. Further chlorogenic acid (3-O-caffeoylquinic acid) contents of extracts were quantified using high-performance thin-layer chromatography (HPTLC). Results: Between all tested extracts, MeOH extract at a quantity of 50.0 mg/mL, paralysed worms in 8.1 min and killed them in 12.8 min, showing a high anthelmintic effect similar to albendazole. Similarly, in vitro DPPH radical scavenging activity, cupric ion reduction and total antioxidant capacity experiments demonstrated that MeOH extract had significant antioxidant activity. Further phytochemical screening showed that MeOH extract was richer regarding phenolic metabolites. Chlorogenic acid, ferulic acid, caffeic acid and gallic acid were only detected in the MeOH extract. Conclusion: Results justify and support the use of J. fruticans in traditional medicine as an anthelmintic agent. Furthermore, a positive correlation was found between the strong antioxidant capacity along with the phenolic composition determined in the MeOH extract and anthelmintic activity.

This study aimed to determine in vitro anthelmintic activity of plant extracts of eleven plant species used traditionally in South Africa to treat various disorders including symptoms related to nematode infections, and to isolate bioactive compounds from the most active plant extract. Crude plant extracts were tested on different life-cycle stages of Haemonchus contortus. The cytotoxicity of the most active extracts, fractions and compounds was evaluated on Vero cells and the most potent extract, fractions and compounds were tested for their ability to kill the parasitic H. contortus and the free-living nematode Caenorhabditis elegans. Typha capensis acetone extract had the strongest egg hatching inhibitory effect with an EC50 of 184.94 μg/mL, and this extract also halted larval development of H. contortus with an EC50 of 83.30 μg/mL compared to the positive control (albendazole) with an EC50 of 2.66 μg/mL. Typha capensis crude extract and its butanol fraction had promising anthelmintic activity against both parasitic H. contortus and free-living C. elegans. Two compounds isolated from T. capensis, namely, isorhamnetin-3-O-β-d-glucoside and isorhamnetin 3-O-rutinoside, had antioxidant activity with IC50 values of 3.16 μg/mL and 0.96 μg/mL respectively, and good anthelmintic activity against H. contortus with IC50 values of 55.61 μg/mL and 145.17 μg/mL respectively. Identification of bioactive compounds from the T. capensis crude extract supports development of this extract as a complementary or alternative treatment against haemonchosis. However, further research is necessary to confirm the anthelmintic efficacy of the plant, including in vivo studies.

A survey including 25 sheep farms in Bakrajo District, Sulaymaniyah, Iraq, was conducted to determine anthelmintic resistance (AR) against albendazole, ivermectin, and levamisole. Fecal Egg Count Reduction Test (FECRT) was used to accomplish this goal. Forty 6–24 month-old sheep of mixed sexes were selected from each farm and randomly divided into four groups. One group served as the untreated control, and the other groups orally administered the recommended doses of the tested drugs. Multidrug resistance against all three drugs was present in 8 of 25 farms (32%). Also, resistance to albendazole and ivermectin was detected on one farm. Albendazole was the most effective anthelmintic agent. Resistance to ivermectin was significantly higher than levamisole and albendazole. Larval cultures revealed that Trichostrongylus spp., Nematodirus spp., and Trichuris spp. were the prevalent gastrointestinal nematodes in the study area. The nematode genera were also detected in the posttreatment larval cultures. It is concluded that AR to albendazole, ivermectin, and levamisole is widespread in sheep in Bakrajo District, north Iraq. This resistance is mainly caused by the emergence of resistant Trichostrongylus and Nematodirus spp.

The efficacy of capsulized Croton tiglium L. (CCT) seeds on the gastrointestinal parasites of native chickens (Gallus domesticus) was tested in experiments. A total of thirty-six free-range native chickens naturally infected with gastrointestinal parasites were divided into four treatment groups (positive control of levamisole+niclosamide, 200 mg, 300 mg and 400 mg CCT seeds) following a completely randomized design (CRD). Prior to treatment and on the 3rd, 6th, 9th and 12th days after treatment, the fecal egg count per gram was measured using the mc master technique. The analysis of variance (ANOVA) was used to statistically analyze all the data obtained. Using Least Significant Differences (LSD), significant differences between treatments were compared. On the day twelve after treatment, percent efficacy of capsulized Croton tiglium seeds on Ascaridia galli/Heterakis gallinarum at 200 mg and 400 mg was highly effective. The comparative cost analysis of the four treatments showed that the use of C. tiglium seeds resulted in a lower cost compared to the commercial dewormer. Commercial anthelmintic was more costly compared to the cost of capsulized C. tiglium seeds on T4 (400mg CCT) by 89. 67 %. The findings indicate the ability of Croton tiglium seeds in native chickens (Gallus domesticus) particularly against Ascaridia galli/Heterakis gallinarum as an alternative anthelmintic.

Helminthosis is one of the greatest causes of parasitic disease and loss in animal productivity. As such, the control of helminth parasites is of critical importance. This study was aimed to investigate the in vitro anthelmintic activity of Dennettia tripetala G. Baker (Annonaceae) fruits against Haemonchus contortus. Using in vitro techniques, the anthelmintic activity of extracts and fractions of D. tripetala G. Baker (Annonaceae) was evaluated for ovicidal (Egg hatch inhibition test) and larvicidal (larval mortality test) activity. Besides, the maximum tolerated dose was determined in adult albino rats administered, 300, 400, and 500 mg/kg body weight of the CME fraction, and observed over a period of 48 h for signs of toxicity and mortality. Phytochemical screening uncovered the occurrence of flavonoids, steroids/triterpenes, cardiac glycosides, saponins, tannins, carbohydrates, and alkaloids in the crude methanol extract (CME), the ethyl acetate fraction (EAF), and butanol fraction. The maximum tolerated dose of the CME of D. tripetala did not produce observable signs of toxicity or death in all the rats given up to 500 mg/kg. The CME and EAF of D. tripetala fruits produced a significant ( $$p < 0.05$$ ) reduction in the hatchability of H. contortus eggs in a concentration-dependent manner, while the CME at concentrations between 12.5 and 100 mg/ml completely inhibited the hatching of H. contortus eggs. Similarly, EAF at doses of 25, 50, and 100 mg/ml completely inhibited the hatching of H. contortus eggs. The CME and EAF of D. tripetala fruits produced significant ( $$p < 0.05$$ ) larvicidal activity against L3 of H. contortus in a concentration-dependent manner while the CME at concentrations between 6.25 and 100 mg/ml caused larval mortality of H. contortus L3 larvae completely. This study suggests that methanol extract and fractions of D. tripetala fruits possess beneficial anthelmintic (ovicidal and larvicidal) activity against H. contortus, and may be a suitable alternative anthelmintic candidate for the control of nematodes.

Cinnamomum bejolghota (Buch.-Ham.) Sweet is traditionally use as anthelmintic and cardiotonic agent. The objective of our current experiment is to establish the traditional claim by determining the in vitro anthelmintic and antihypertensive activity of extract and isolated compounds from the leaves of the plant. Isolation of compounds was carried out by bioassay guided method from hexane and ethanol extract. In vitro anti-hypertensive activity was carried out by angiotensin converting enzyme (ACE) inhibitory method. Anthelmintic activity was done by measuring the effect of isolated compounds on the survivability of adult nematode, egg hatching and larval development of Caenorhabditis elegans. From the plant, thirteen compounds (1-13) were characterized by using chromatography and spectroscopic methods and were tested for in vitro anthelmintic and ACE inhibitory activity. Compounds linalool (1), β-sitosterol (6), cinnamic acid (11), fridelin (12) exhibited promising ACE inhibitory activity with IC50 value of 99.02 ± 0.44, 65.87 ± 0.72, 45.36 ± 0.16 and 45.45 ± 2.31 μg/ml respectively. Further, geranial (4) exhibited the highest anthelmintic property when tested against adult C. elegans with an ED50 of 57.55 ± 4.47 µg/ml. Geranial treated eggs showed that at a concentration of 47.65 ± 1.917 µg/ml approximately 50% of the eggs did not hatch and at a concentration of 200 µg/ml compound was very effective in hindering the hatching of eggs (88.66 ± 0.67%). The larval development assay shows that at a concentration of 38.73 ± 2.57 µg/ml survival of about 50% of larvae was observed. To the best of our knowledge, this is the first report of isolation of anthelmintic and antihypertensive chemical moiety from C. bejolghota and can be developed into a novel phyto-pharmaceutical product.

Treatment of parasitic nematode infections depends primarily on the use of anthelmintics. However, this drug arsenal is limited, and resistance against most anthelmintics is widespread. Emodepside is a new anthelmintic drug effective against gastrointestinal and filarial nematodes. Nematodes that are resistant to other anthelmintic drug classes are susceptible to emodepside, indicating that the emodepside mode of action is distinct from previous anthelmintics. The laboratory-adapted Caenorhabditis elegans strain N2 is sensitive to emodepside, and genetic selection and in vitro experiments implicated slo-1, a large K+ conductance (BK) channel gene, in emodepside mode of action. In an effort to understand how natural populations will respond to emodepside, we measured brood sizes and developmental rates of wild C. elegans strains after exposure to the drug and found natural variation across the species. Some of the observed variation in C. elegans emodepside responses correlates with amino acid substitutions in slo-1, but genetic mechanisms other than slo-1 coding variants likely underlie emodepside resistance in wild C. elegans strains. Additionally, the assayed strains have higher offspring production in low concentrations of emodepside (a hormetic effect). We find that natural variation affects emodepside sensitivity, supporting the suitability of C. elegans as a model system to study emodepside responses across natural nematode populations., Graphical abstract Image 1, Highlights • Emodepside responses vary across the C. elegans species. • Wild strains of C. elegans model natural differences in parasite emodepside responses. • Variation in the emodepside target slo-1 and other loci correlate with resistance. • Low doses of emodepside cause a hormetic effect on offspring production.

Sheep production is a major source of income for resource poor farmers of the world. The main purposeof sheep raising is to fulfill the needs for mutton, milk, and wool production. Parasitic diseases, one ofthe principal hindrances in the development of commercial livestock business, are facilitated throughfavorable climatic conditions and lack of awareness. A variable prevalence ranging from 18.63 to 100% ofdifferent gastrointestinal parasite (GI) species in sheep were reported from different parts of the world.Incidence, prevalence, and intensity of parasitic infections is a multifactorial phenomenon and depends onenvironment, geographic location, pasture condition, host characteristics, grazing habits, and nutritionalstatus. Prevalence of parasitic infections not only adversely affects animal health but also causes hugeeconomic losses up to billions of rupees by decrease in milk, meat and wool production, retarded growth,parasite control measures and death of animals. For the control of GI parasites in small ruminants especiallykept by resource-poor farmers, it is better to identify the burden and types of helminths along withspecific risk factors associated with helminthosis of a specific area. Factors responsible for developmentof resistance are lavish use of anti-parasitic drugs, poor efficacy of anti-parasitic agents, inadequate doselevel, low protein diet and environmental toxicity. Due to limitations of chemotherapy during the pastdecade, use of plants with anthelmintic properties (ethnoveterinary medicine) are under considerationaround the world. A number of plant species have been identified with anti-parasitic properties that maydisturb the regular physiological functions of parasites. Use of plants with anthelmintic properties isconsidered the best choice for control of parasites in the present scenario. In this review, sheep production,GI parasitic infection of sheep, medicinal plants, and their uses for control have been described.

Nowadays, Herbal products are attracting the whole population of the world because of their safety features. The present study aimed to reveal the phytochemical compositions, anthelmintic activity, antioxidant and antimicrobial potential of Salvadora persica leaves extract in different extraction solvent systems. Shade dried leaves of Salvadora persica were extracted in chloroform, ethyl acetate, methanol, ethanol, and water using the modified fractional maceration method. These extracts were analyzed for their phytochemical, anthelmintic activity, antioxidant and antimicrobial potential. The antioxidant activity was done using DPPH and H2O2 radical scavenging method. While the antimicrobial potential was analyzed using the disc diffusion method. Anthelmintic activity was determined against Indian earthworms (Eiseniafetida).The highest percentage yield of extract was found in the hydro solvent extraction system. The DPPH radical scavenging was found 67.3% (lowest) and 99.07% (highest), (dose100µg/ml), in SPLEC and SPLEW respectively. The highest antimicrobial activity was found in SPLEE (200µg/ml and 100µg/ml) i.e. 6 mm and 4 mm zone of inhibition against E.coli while 5mm and 3mm again B. subitilis respectively. All extract fractions of Salvadora persica exhibited anthelmintic activity but less than standard drug albendazole. Based on our findings, we were concluded that leaves of Salvadora persica have an anthelmintic effect good antioxidant and antimicrobial potential so their consumption may exert a beneficial effect on human and animal health as well

The nanoencapsulation of biocomposites with anthelmintic action has been proposed as an alternative for improving their efficiency. Thus, the current study aimed to evaluate the efficacy of carvacryl acetate nanoencapsulated with biopolymers (nCVA) in the control of sheep gastrointestinal nematodes. CVA was nanoencapsulated with chitosan/chichá gum and characterized in terms of its efficacy of encapsulation (EE), yield and zeta potential. The acute toxicity of nCVA was evaluated in mice. For the fecal egg count reduction test, 40 animals were divided into four groups (n = 10) and orally administered the following treatments: G1, 250 mg kg−1 CVA; G2, 250 mg kg−1 nCVA; G3, chitosan/chichá gum (negative control) and G4, 2.5 mg kg−1 monepantel (positive control). Feces were collected on days 0 and 16 posttreatment to determine the eggs per gram of feces (epg). The EE and yield of nCVA were 72.8 and 57.5%, respectively. The nanoparticles showed a size of 764.5 ± 302.5 nm, and the zeta potential at pH 3.2 was +22.0 mV. nCVA presented a 50% lethal dose (LD50) of 2609 mg kg−1. By 16 days posttreatment, CVA, nCVA and monepantel reduced the epg by 52.9.7, 71.5 and 98.7%, respectively, and the epg of sheep treated with nCVA differed from that of the negative control (P > 0.05) but did not differ from that of sheep treated with CVA. In conclusion, the nanoencapsulation of CVA reduced its toxicity, and nCVA showed anthelmintic activity.

Albendazole (ABZ) is an anthelmintic pharmaceutical commonly used in the treatment of nematode infections. It is a Class II drug poorly water-soluble, with very low bioavailability, a feature particularly limiting to treat the trichinellosis chronic phase. Microcrystals obtained by controlled precipitation using hydroxyethyl cellulose and chitosan have previously been shown to improve ABZ biopharmaceutical properties. This investigation aimed to test the systems' in vivo efficacy in the CBi-IGE murine model of Trichinella spiralis infection in the infection's different phases and parasite’ stages. Treatment in the enteral phase led to a 90% decrease in the larval muscle load, probably due to its effect on T. spiralis female fecundity. Both microcrystal systems given in the migratory phase halved muscle load in males, a response not observed in females. The chitosan-based microcrystals proved to be the best when administered in the chronic phase of the infection – an increased proportion of L1 dead larvae was found compared to controls, except in CBi+-treated females. Males and females from the highly susceptible CBi+ line presented a significantly different treatment response in this phase. In vivo efficacy depended on the host genotype and sex and was related to the parasite cycle stage in which the formulations were administered.

The objective of this study was to evaluate the effectiveness of the main anthelmintics used for the control of trematodes in cattle in an endemic area in the humid Mexican tropics. A diagnostic study was carried out in nine cattle farms to determine the prevalence of flukes through faecal examination. Only three farms with more than 20 cows positive to trematodes were chosen to determine the effectiveness of commercial anthelmintics (triclabendazole, TCBZ; ivermectin + closantel, (IVM + CLOS); IVM + clorsulon, (CLORS); nitroxynil, NITROX). The prevalence of Fasciola hepatica was 27.1% and 29.6% of paramphistomes. The faecal egg count of trematodes ranged from 0.0 to 12.2 eggs per gram of faeces. The highest effectiveness against F. hepatica was 96.7%, and 92.7% against paramphistomes. NITROX was the most effective in the control of trematodes, while other products, such as IVM + CLORS and TCBZ obtained values lower than 90%, which puts sustainable trematode control at risk. The presence of trematodes was observed on most farms, although the prevalence per herd was highly variable, which indicates that the trematodes F. hepatica and paramphistomes are endemic to the region and a suitable management programme is suggested to control infections caused by these parasites.

Background: Ceriops decandra (Griff.) Ding Hou is used conventionally for managing a number of therapeutic conditions including diabetes, haemorrhage, pain, diarrhea, angina, and dysentery etc. Furthermore, Ceriops tagal Linn is used to treat hemorrhage, acariasis, wound infection, malaria, malignant diabetes and ulcers etc in folk medicine. The present study was designed to evaluate the comparative pharmacological activities of leaves of these two medicinal plants of the Sundarbans. Methods: Antioxidant activity was assessed by total phenolic, total flavonoids, total tannin content, and DPPH free radical scavenging assays. Acetic acid-induced test for analgesic, oral glucose tolerance test for antihyperglycemic, open field test for neurobehavioral, prothrombin time test for anticoagulant, anthelmintic potential on Paramphistomum cervi, and in-vivo cytotoxicity test on brine shrimp nauplii were used for appraising pharmacological activities of both extracts. Results: C. decandra extract revealed greater radical scavenging activity than that of C. tagal. C. decandra extract significantly (P < 0.05) reduced writhing inhibition of 54.55% and 66.37% at 500mg/kg and 250 mg/kg, respectively. In oral glucose tolerance test, C. decandra significantly lowered the blood glucose level for pretreated mice with glucose by 25.76%, 2272%, and 31.88%, 38.71% respectively, at 60 min and 120min at the 250 mg/kg, and 500 mg/kg dose level. But, the reduction of blood glucose level by C. tagal extract was less than that of C. decandra. Furthermore, C. decandra produced a sedative effect at both doses starting from 30 min to 120 min of experimental period. The crude extract of C. decandra and C. tagal delayed the prothrombin time in a dose dependently. The C. decandra and C. tagal produced dose-dependent paralysis and death time. The LC50 values obtained from brine shrimp lethality bioassay were 94.69, 114.29 µg/mL for C. decandra and C. tagal, respectively. Conclusion: C. decandra revealed prominent pharmacological activities than that of C. tagal. Also, the present study confirmed the scientific evidence of both plants.

Pineapple peel (Ananas comosus (L.) Merr.) has a potential natural-based anthelmintic agent. This study aimed to determine the effective concentration of pineapple peel juice against Paramphistomum sp. in vitro. Adults Paramphistomum sp. were divided into 5 test groups, the control group contained Albendazole 10% w/v, the nontreatment group contained NaCl 0.9% w/v and the treatment group contained pineapple peel juice with concentration of 12.5, 20, and 25% w/v. The number of live flukes and the motility scores were recorded every 15 minutes for 5 hours of incubation. The Survival Index (SI) and Relative Motility (RM) of flukes were calculated and statically analyzed using SPSS version 23 software. SI values of flukes in the 12.5, 20, and 25% w/v concentration of treatment group were 46.3, 50.0, and 38.9% respectively. RM values of flukes in the 12.5, 20 and 25% w/v concentration of treatment groups were 39.1, 42.0, and 34.1 respectively. RM values of flukes in the 12.5, 20 and 25% w/v concentration of treatment groups were 39.1359, 42.0249, and 34.1174 respectively. This research showed that, pineapple peel juice 25% w/v was effective against Paramphistomum sp. with survival index and relative motility values comparable to Albendazole 10% w/v (p

The prevention, treatment and control of Haemonchus contortus have been increasingly problematic due to its widespread occurrence and anthelmintic resistance. There are very few descriptions of recombinant antigens being protective for H. contortus, despite the success of various native antigen preparations, including Barbervax. We recently identified an H. contortus excretory–secretory antigen, H. contortus adhesion-regulating molecule 1 (HcADRM1), that served as an immunomodulator to impair host T-cell functions. Given the prophylactic potential of HcADRM1 protein as a vaccine candidate, we hereby assessed the efficacies of HcADRM1 preparations against H. contortus infection. Parasitological and immunological parameters were evaluated throughout all time points of the trials, including fecal egg counts (FEC), abomasal worm burdens, complete blood counts, cytokine production profiles and antibody responses. Active vaccination with recombinant HcADRM1 (rHcADRM1) protein induced protective immunity in inoculated goats, resulting in reductions of 48.9 and 58.6% in cumulative FEC and worm burdens. Simultaneously, passive administration of anti-HcADRM1 antibodies generated encouraging levels of protection with 46.7 and 56.2% reductions in cumulative FEC and worm burdens in challenged goats. In addition, HcADRM1 preparations-immunized goats showed significant differences in mucosal and serum antigen-specific immunoglobulin G (IgG) levels, total mucosal IgA levels, haemoglobin values and circulating interferon-γ, interleukin (IL)-4 and IL-17A production compared to control goats in both trials. The preliminary data of these laboratory trials validated the immunoprophylactic effects of rHcADRM1 protein. It can be pursued as a potential vaccine antigen to develop an effective recombinant subunit vaccine against H. contortus under field conditions.

Bovine fascioliasis is an important zoonotic parasitic disease that causes significant economic losses to the livestock industry. The aim of this study was to determine the prevalence and risk factors of bovine fascioliasis in Kelantan. In this cross-sectional study, a total of 308 stool and blood samples of farmed cattle were collected from December 2017 to June 2018. The stool samples were examined microscopically for the presence of Fasciola spp. eggs following a formalin-ether sedimentation process. The blood samples were subjected to a commercial ELISA kit (Bio-X-Diagnostic, Rochefort, Belgium) for the detection of anti-Fasciola IgG antibody. The association between coprological findings and risk factors was determined using Pearson’s chi-square (χ2). The coproprevalence and seroprevalence of bovine fascioliasis was 14.6% and 37.3%, respectively. There were significant (P < 0.05) associations between the risk of infections and the sex, type of feedings, anthelmintic treatment and farm hygiene. Female cattle (OR: 3.104; 95% CI: 1.265, 7.615), feeding by grazing (OR: 4.458; 95% CI: 1.823, 10.90), untreated cattle (OR: 3.833; 95% CI: 1.620, 9.071), non-schedule anthelminthic treatment (OR: 3.927; 95% CI: 1.685, 9.152) and farm that have never been cleaned (OR: 2.829; 95% CI: 1.428, 5.608) showed higher odds of Fasciola spp. infection. These findings suggested bovine fascioliasis is a serious veterinary disease in Kelantan. Thus, appropriate control, prevention and monitoring strategies of this parasitic infection are urgently needed to reduce the burden of the disease.

The purpose of the research is studying the influence of various components on the targeted delivery of fenbendazole and evaluation of their efficacy in mice experimentally infected with Trichinella spiralis.Materials and methods. The experiment used 80 white mice experimentally infected with T. spiralis, at a dose of 200 larvae per animal. Each group of 10 animals was administered intragastrically solid dispersion of fenbendazole (SDF) with polyvinyl pyrrolidone (PVP), arabinogalactan (AG), disodium salt of glycyrrhizinic acid (Na2 GA), sodium dioctyl sulfosuccinate (SDS), licorice extract (LE) and hydroxyethyl starch (HES) at a single dose of 2.0 mg/kg of active substance as compared with the fenbendazole substance at the same dose. The control group did not receive the drug. The anthelmintic efficacy was studied by the results of necropsy of the small intestine of mice on the second day after drugs administration. The concentration of fenbendazole and its metabolites in the small intestine was determined by high-performance liquid chromatography with tandem mass spectrometry detection.Results and discussion. SDF with PVP, AG, Na2 GA, SDS, LE and HES showed 98.0, 94.9, 96.6, 100, 86.0 and 81.0% efficacy against intestinal nematode T. spiralis at a dose of 2.0 mg/kg of AS (fenbendazole). The maximum concentration of fenbendazole and its metabolites – sulfone and sulfoxide - was determined in the small intestine wall of animals on the second day after SDF with SDS administration and amounted to 3117.8, 614.6 and 2998.6 ng/g respectively. After fenbendazole substance administration, the drug and its metabolites were found in trace quantity.

This study investigated the antioxidant, anthelmintic and antibacterial activities of essential oil obtained from red juniper (Juniperus phoenicea) leaves. Red juniper essential oil yield was 0.80%...

Ethno-veterinary medicinal studies associated with traditional uses of the flora of the Cholistan desert have shown that fruits of Citrullus colocynthis are used for the treatment of helminth infections. The present research was designed to evaluate the anthelmintic efficacy of C. colocynthis against H. contortus. The in vitro anthelmintic effects of aqueous-methanol and ethyl acetate fruit extracts of C. colocynthis against H. contortus were determined through egg hatch and adult motility assays. The effect of four serial dilutions of 25 mg/mL of each extract compared to levamisol (0.55 mg/mL) and oxfendazole (three serial dilutions of 25 µg/mL) were studied. Both ethyl acetate and aqueous-methanol extracts paralyzed all adult worms 4h and 8h post-exposure at a dose of 25 mg/mL each. In the egg hatch assay, about 83.67% and 80.67% of H. contortus eggs failed to hatch with the same dose (i.e. 25 mg/mL) of ethyl acetate and CAME extracts, respectively. The results of the present study strongly support fruit extracts of C. colocynthis as a promising alternative to synthetic drugs against H. contortus. These findings will lead to further in vivo studies to investigate the bio-availability of the active ingredients of the plant and the minimum non-lethal concentration required for treatment of haemonchosis in livestock. The anthelmintic effects of C. colocynthis might be attributed to the presence of phenolic acids.

Alstonia scholaris, Cardiospermum halicacabum, Hydrocotyle sibthorpioides, and Hypericum japonicum are important folk medicinal plants used by tribal communities of Bodoland region of Assam to treat helminth infections. Because of their ethnomedicinal values, the present study was designed to investigate the antioxidant, antiproliferative, and anthelmintic activities of the plants. The antioxidant activity was measured by total antioxidant capacity, total phenolics (TPC), total flavonoid (TFC), FRAP, DPPH, ABTS, and TBARS assay. Antiproliferative and apoptosis-inducing activities of plants were conducted in Dalton’s lymphoma (DL) cells. Cells were treated for 24 h with different doses (25–200 mg/mL) of plant extracts. Anthelmintic study was conducted by treating the Paramphistomum sp. at different doses of plant extracts. Phytochemical and antioxidant studies showed rich TPC, TFC, and free radical scavenging activity in H. japonicum and H. sibthorpioides. Both the antiproliferative and anthelmintic bioassays showed a dose-dependent efficacy in all plants. H. japonicum showed the strongest anthelmintic activity (LC(50) 0.21 mg/mL) followed by H. sibthorpioides (5.36 mg/mL), C. halicacabum (13.40 mg/mL), and A. scholaris (18.40 mg/mL). Evidently, H. sibthorpioides showed the strongest antiproliferative and apoptosis-inducing activities among all the plants. The study observed a positive correlation between the antioxidant properties and antiproliferative and anthelmintic activities of the plants. We, therefore, conclude that the phytocompounds present in the crude extracts along with antioxidant molecules may have combined effects contributing to the antiproliferative and anthelmintic activities of the plants.

El objetivo del presente trabajo fue evaluar el efecto de la inclusión de hojas de Acacia cochliacantha en una dieta de mantenimiento para cabritos de la raza Boer en el conteo fecal de huevos (CFH) de Haemonchus contortus, consumo de agua y materia seca. Diez cabritos recién destetados (16.850 ± 1.630 kg de peso vivo inicial y 3 meses de edad), fueron experimentalmente infestados con larvas (L3) de H. contortus (350 larvas por kilogramo de peso vivo), para probar dos tratamientos: T1: testigo (animales infectados con larvas L3 de H. contortus, sin inclusión de hojas de A. cochliacantha) y T2: animales infectados con larvas L3 de H. contortus, con inclusión de 5% hojas de A. cochliacantha en la dieta. Antes de asignar los tratamientos a los animales, se realizó un CFH por gramos de heces en cada uno de ellos y de esta manera agruparlos de mayor a menor en relación a la cantidad de huevos presentes en las heces, en los dos animales con valores más altos se asignaron aleatoriamente T1 o T2 y así sucesivamente hasta completar cinco repeticiones verdaderas para cada tratamiento. Las variables medidas fueron: CFH (por gramo de heces), consumo de agua y consumo de materia seca (CMS). Los resultados encontrados demostraron reducción (P 0.05). Se concluye que la adición de hojas de A. cochliacantha en dietas para cabritos tienen actividad antihelmíntica, por lo que esta leguminosa arbórea podría representar una opción en el manejo integral de la nematodiasis de cabritos Boer en crecimiento.

The aim of the study was to evaluate the in vitro nematicide activity of the allspice (Pimienta dioica) and oregano (Origanum vulgare) essential oils (EOs) on eggs and larvae of gastrointestinal nematodes (GIN) from ruminant. The EOs were obtained by hydro-distillation of previously dehydrated plant material. In the in vitro evaluation, the egg hatching and larval mobility of Haemonchus contortus and Cooperia spp. of sheep and cattle, respectively, were determined. EOs at concentrations of 20.2–252.3 µg µL(−1) with serial dilutions were used, also a negative control (distilled water + Tween 20) and Thiabendazol (77 µg µL(−1)) and Levamisole (120 µg µL(−1)) as a positive control to eggs and larvae, respectively, were placed on microplates. The results were analyzed with the PROBIT procedure. PPEO showed ovicidal effect in vitro test, with lethal doses 99 (LD(99)) of 0.56–4.19 µg µL(−1), while oregano essential oil (OREO) was shown to be a larvicidal activity with doses of LD(99) of 0.15–6.60 L(−1). The results confirm that P. dioica and O. vulgare EOs have ovicidal and larvicidal capacity against GIN in vitro test.

Background Plant-derived cysteine proteinases of the papain family (CPs) attack nematodes by digesting the cuticle, leading to rupture and death of the worm. The nematode cuticle is composed of collagens and cuticlins, but the specific molecular target(s) for the proteinases have yet to be identified. Methods This study followed the course of nematode cuticle disruption using immunohistochemistry, scanning electron microscopy and proteomics, using a free-living nematode, Caenorhabditis elegans and the murine GI nematode Heligmosomoides bakeri (H. polygyrus) as target organisms. Results Immunohistochemistry indicated that DPY-7 collagen is a target for CPs on the cuticle of C. elegans. The time course of loss of DPY-7 from the cuticle allowed us to use it to visualise the process of cuticle disruption. There was a marked difference in the time course of damage to the cuticles of the two species of nematode, with H. bakeri being more rapidly hydrolysed. In general, the CPs’ mode of attack on the nematode cuticle was by degrading the structural proteins, leading to loss of integrity of the cuticle, and finally death of the nematode. Proteomic analysis failed conclusively to identify structural targets for CPs, but preliminary data suggested that COL-87 and CUT-19 may be important targets for the CPs, the digestion of which may contribute to cuticle disruption and death of the worm. Cuticle globin was also identified as a cuticular target. The presence of more than one target protein may slow the development of resistance against this new class of anthelmintic. Conclusions Scanning electron microscopy and immunohistochemistry allowed the process of disruption of the cuticle to be followed with time. Cuticle collagens and cuticlins are molecular targets for plant cysteine proteinases. However, the presence of tyrosine cross-links in nematode cuticle proteins seriously impeded protein identification by proteomic analyses. Multiple cuticle targets exist, probably making resistance to this new anthelmintic slow to develop. Graphical Abstract

Objective The United States cattle industry suffers substantial monetary losses due to gastrointestinal parasites. There are limited data on extended-release and pour-on anthelmintic treatment on growth and reproductive performance in replacement beef cattle. This study aimed to investigate anthelmintic therapy on postweaning growth performance and reproductive success in fall-born, crossbred replacement heifers. Materials and Methods Eighty-three, newly weaned, Angus crossbred, fall-born heifer calves were stratified by BW at d −14, fecal egg count, and day of age and allocated randomly to 1 of 3 anthelmintic treatments: (1) control, no anthelmintic (n = 28; CON); (2) combination pour-on moxidectin and oxfendazole (n = 28; MO); or (3) extended-release eprinomectin (n = 27; ERE). Heifers grazed within treatment groups on separate pastures for a 274-d period. Respective anthelmintics were administered on d 0 and 154. Body weights, BCS, and calf BW were analyzed using the MIXED procedure of SAS. Heifer cyclicity, estrous detection (using an Estrotect patch), AI conception, natural service conception, overall pregnancy rates, and live calving rates were analyzed using the GENMOD procedure of SAS. Significance was declared at P ≤ 0.05. Results and Discussion Final heifer BW, ADG and BCS were greater (P Implications and Applications The inclusion of an anthelmintic increased growth and improved reproductive performance in fall-born heifers over a 274-d grazing study.