scholarly journals In vitro Anthelmintic Activity of Two Aloe-derived Active Principles against Sheep Gastrointestinal Nematodes

2017 ◽  
Vol 12 (12) ◽  
pp. 1934578X1701201
Author(s):  
Gianluca Fichi ◽  
Matteo Mattellini ◽  
Elisa Meloni ◽  
Guido Flamini ◽  
Stefania Perrucci
Keyword(s):  
Larval Development ◽  
Larval Mortality ◽  
Plant Secondary Metabolites ◽  
Anthelmintic Activity ◽  
Gastrointestinal Nematodes ◽  
Egg Hatch ◽  
Reference Drug ◽  
Faecal Samples ◽  
Aloe Emodin

The in vitro anthelmintic activity on sheep gastrointestinal strongyle (GIS) eggs and larvae of 0.5% aloin and 0.1% aloe-emodin was investigated. From fresh faecal samples collected by ewes naturally infected by Haemonchus, Trichostrongylus and Teladorsagia nematodes, GIS eggs were isolated and cultivated in Petri dishes (100 eggs/dish). For the in vitro evaluation of the anthelmintic activity of tested compounds, the Egg hatch test (EHT), the Larval development test (LDT) and the Larval mortality/paralysis test (LMT) were used. In each assay, the activity of tested compounds was compared to untreated and treated (0.1% thiabendazole, TBZ) controls. Six repetitions were made through the experiment. Obtained data were statistically elaborated using the X2 test. In EHT, 0.5% aloin gave highly significantly different (P<0.01) results from the untreated controls. In LDT, both 0.1% aloe-emodin and 0.5% aloin almost completely prevented the larval development from L1 to L3, showing no significant differences (P<0.01) when compared to TBZ. In LMT, larval mortality observed in 0.5% aloin treated plates was significantly higher (P<0.01) than that observed in TBZ treated controls. These results show the in vitro anthelmintic properties on sheep GIS of the examined plant secondary metabolites. In LDT and/or LMT, the activity of 0.5% aloin and 0.1% aloe-emodin was comparable to or higher than that of the reference drug.

scholarly journals In Vitro Anthelmintic Activity of Four Plant-Derived Compounds against Sheep Gastrointestinal Nematodes

2018 ◽  
Vol 5 (3) ◽  
pp. 78 ◽  
Author(s):  
Federica Giovanelli ◽  
Matteo Mattellini ◽  
Gianluca Fichi ◽  
Guido Flamini ◽  
Stefania Perrucci
Keyword(s):  
Larval Development ◽  
Larval Mortality ◽  
Anthelmintic Activity ◽  
Gastrointestinal Nematodes ◽  
Experiment Data ◽  
Egg Hatch ◽  
Pure Compounds ◽  
Petri Dishes ◽  
Larval Development Test

By using the egg hatch test (EHT), the larval development test (LDT) and the larval mortality/paralysis test (LMT), the in vitro anthelmintic activity on sheep gastrointestinal strongyles (GIS) of four plant-derived pure compounds, mangiferin (at 0.25%, 0.125% and 0.0625%), rutin (at 1%, 0.75%, 0.5%), quercetin (at 1%), and β-sitosterol (at 1%, 0.75%, 0.5%), was investigated. For comparison, untreated and treated (0.1% thiabendazole, 0.1% TBZ) controls were used. Six repetitions were made throughout the experiment. Data were statistically elaborated using the χ2 test. The concentration able to inhibit the development of the 50% of L1s to L3s and causing the mortality of the 50% of L3s (EC50) was also calculated. L3s recovered from untreated Petri dishes were identified at the genus level. In EHT, all tested compounds at all concentrations significantly (p < 0.01) inhibited the hatch of the eggs when compared to the untreated controls, but none of them was as effective as 0.1% TBZ. In LDT, rutin (at 1%, 0.75% and 0.5%), mangiferin (at 0.25% and 0.125%), β-sitosterol (at 1%) and 0.1% TBZ completely prevented the larval development from L1 to L3 in respect to the untreated controls (p < 0.01). In LMT, all tested compounds significantly (p < 0.01) increased the death of L3s compared to the untreated controls, except for β-sitosterol at 0.5%. However, only rutin at all concentrations and 0.25% and 0.125% mangiferin were as effective as 0.1% TBZ. Haemonchus, Trichostrongylus, Chabertia and Teladorsagia/Ostertagia GIS genera, were identified.

scholarly journals In Vitro Anthelmintic Activity of Saponins Derived from Medicago spp. Plants against Donkey Gastrointestinal Nematodes

2019 ◽  
Vol 6 (2) ◽  
pp. 35 ◽  
Author(s):  
Michela Maestrini ◽  
Aldo Tava ◽  
Simone Mancini ◽  
Federica Salari ◽  
Stefania Perrucci
Keyword(s):  
Anthelmintic Activity ◽  
Gastrointestinal Nematodes ◽  
Deionized Water ◽  
Chemical Compositions ◽  
Egg Hatching ◽  
Egg Hatch ◽  
Reference Drug ◽  
Fecal Samples ◽  
Nematode Eggs

With the aim to find new effective natural compounds for the control of nematodes, the in vitro anthelminthic properties of purified 1% saponins showing different chemical compositions and derived from Medicago sativa (MS), Medicago arborea (MA), Medicago polymorpha cultivar ‘Santiago’ (MPS), M. polymorpha cultivar ‘Anglona’ (MPA), and 1% prosapogenins from M. sativa (MSp), were evaluated and compared. As a source of nematode eggs, pooled fresh fecal samples taken from dairy donkeys naturally infected by gastrointestinal nematodes were used. From fecal samples, eggs were recovered, suspended in deionized water, and used immediately in the bioassay (egg hatch test). The activity of the tested compounds was compared to positive (0.1% thiabendazole) and negative (deionized water and 1% DMSO) controls. All experiments were repeated in triplicate and the obtained data were statistically analyzed. All the tested plant compounds caused a significant (p < 0.05) inhibition of nematode egg hatching (>80%). Moreover, all saponins and prosapogenins showed in vitro anthelmintic properties statistically comparable to that of the reference drug (p < 0.05), except for MPS extract. Obtained results showed that the different Medicago saponins evaluated in this study possess high anthelmintic properties against gastrointestinal nematodes of dairy donkeys, although to a different extent depending on their composition.

Anthelmintic evaluation of Cucurbita pepo againstgastrointestinal nematodes of sheep

2017 ◽  
Author(s):  
Ambalathaduvar Meenakshisundaram ◽  
Tirunelveli Jayagopal Harikrishnan ◽  
Thavasi Anna
Keyword(s):  
Larval Development ◽  
Anthelmintic Activity ◽  
Gastrointestinal Nematodes ◽  
Migration Inhibition ◽  
Egg Hatch ◽  
Larval Migration ◽  
Faecal Egg Count ◽  
Ethanolic Extracts

The study was aimed at to investigate the anthelmintic efficacy of aqueous and ethanolic extracts of Cucurbita pepo against gastrointestinal nematodes of sheep by scientifically validated in vitro and in vivo tests. In vitro anthelmintic activity was determined by egg hatch assay, larval migration inhibition assay and larval development assay against eggs and larvae of mixed gastrointestinal nematodes of sheep. The extracts which were found to be effective in in vitro assays were further evaluated by in vivo faecal egg count reduction test against mixed species of sheep gastrointestinal nematodes with 3 different doses (125, 250 and 500 mg kg-1). Haematological and serum parameters were estimated before and after treatment to determine the impact of plant extracts on health of the animal. Aqueous extract of C. pepo demonstrated significant inhibition of egg hatch at 40 and 80 mg/ml. The ED50 value of egg hatch inhibition was 3.51mg/ml. In larval migration inhibition assay, both aqueous and ethanolic extracts of C. pepo demonstrated inhibition of larval migration and the LM50 was 1.75 and 0.32 mg/ml respectively. However, in larval development assay, both aqueous and ethanolic extracts showed only marginal inhibition of larval development at all concentrations tested. In faecal egg count reduction test (FECRT), aqueous extracts of C. pepo at 500 mg/kg caused significant reduction in eggs per gram (96.61 per cent) the reduction being higher than the result obtained with albendazole, the positive control (93.25 per cent). There was a significant difference in EPG reduction between sheep treated with albendazole and C. pepo. Haematological and serum parameters were not affected in both the treated and untreated sheep indicating that the extracts did not cause toxic effects. Based on the results obtained in this study, the aqueous extract of C. pepo possesses anthelmintic activity and could offer an alternative source for the control of gastrointestinal nematodes of sheep.

In vitro ovicidal and larvicidal activities of some saponins and flavonoids against parasitic nematodes of goats

Parasitology ◽  
2018 ◽  
Vol 145 (14) ◽  
pp. 1884-1889 ◽  
Author(s):  
Acidália Carine Vieira Santos ◽  
Francianne Oliveira Santos ◽  
Hélimar Gonçalves Lima ◽  
Gisele Dias Da Silva ◽  
Rosangela Soares Uzêda ◽  
...  
Keyword(s):  
Anthelmintic Activity ◽  
Gastrointestinal Nematodes ◽  
Parasitic Nematodes ◽  
Egg Hatching ◽  
Egg Hatch ◽  
Low Toxicity ◽  
Larvicidal Activities ◽  
Hecogenin Acetate ◽  
Active Substances

AbstractThis study assessed the anthelmintic activity of plant-derived compounds against gastrointestinal nematodes of goats using the egg hatch and larval motility assays. The compounds tested were saponins (digitonin and aescin) and their respective sapogenins (aglycones), hecogenin acetate and flavonoids (catechin, hesperidin, isocordoin and a mixture of isocordoin and cordoin). Additionally, cytotoxicity of active substances was analysed on Vero cell through 3-4,5-dimethylthiazol-2-yl,2,5diphenyltetrazolium bromide (MTT) and propidium iodide (PI) tests. Significant reduction on the egg hatching (P < 0.05) was seen only in the treatments with aescin (99%/EC50 = 0.67 mg mL−1) and digitonin (45%). The compounds that reduced the larval motility (P < 0.05) were digitonin (EC50 = 0.03 mg mL−1 and EC90 = 0.49 mg mL−1) and the hecogenin acetate (75%). The other sapogenins showed low anthelmintic activity. All the flavonoids showed low ovicidal (4–12%) and larvicidal (10–19%) effects. The aescin and digitonin showed low toxicity in PI test (viable cells >90%). Nevertheless, higher cytotoxicity was observed in the MTT assay, with IC50 of 0.20 mg mL−1 (aescin) and 0.0074 mg mL−1 (digitonin). Aescin and digitonin have a pronounced in vitro anthelmintic effect and the glycone portion of these saponins plays an important role in this activity.

scholarly journals Anthelmintic Activity of Wormwood (Artemisia absinthium L.) and Mallow (Malva sylvestris L.) against Haemonchus contortus in Sheep

Animals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 219 ◽  
Author(s):  
Dominika Mravčáková ◽  
Michaela Komáromyová ◽  
Michal Babják ◽  
Michaela Urda Dolinská ◽  
Alžbeta Königová ◽  
...  
Keyword(s):  
Haemonchus Contortus ◽  
Small Ruminants ◽  
Anthelmintic Activity ◽  
In Vitro Tests ◽  
Artemisia Absinthium ◽  
Egg Hatch ◽  
Faecal Samples ◽  
Ovicidal Effect ◽  
Nematode Eggs

The objective of this study is to evaluate the effect of dry wormwood and mallow on the gastrointestinal parasite of small ruminants Haemonchus contortus. Twenty-four experimentally infected lambs were randomly divided into four groups of six animals each: unsupplemented lambs, lambs supplemented with wormwood, lambs supplemented with mallow and animals supplemented with a mix of both plants. Faecal samples from the lambs were collected on day 23, 29, 36, 43, 50, 57, 64 and 75 post-infection for quantification of the number of eggs per gram (EPG). The mix of both plants contained phenolic acids (10.7 g/kg DM) and flavonoids (5.51 g/kg DM). The nematode eggs were collected and in vitro egg hatch test was performed. The aqueous extracts of both plants exhibited strong ovicidal effect on H. contortus, with ED50 and ED99 values of 1.40 and 3.76 mg/mL and 2.17 and 5.89 mg/mL, respectively, in the in vitro tests. Despite the great individual differences between the treated lambs in eggs reduction, the mean EPG of the untreated and treated groups did not differ (p > 0.05). Our results indicate that using wormwood and mallow as dietary supplements do not have a sufficient effect on lambs infected with H. contortus.

scholarly journals Evaluation of Eucalyptus citriodora essential oil on goat gastrointestinal nematodes

2011 ◽  
Vol 20 (3) ◽  
pp. 223-227 ◽  
Author(s):  
Iara Tersia Freitas Macedo ◽  
Claudia Maria Leal Bevilaqua ◽  
Lorena Mayana Beserra de Oliveira ◽  
Ana Lourdes Fernandes Camurça-Vasconcelos ◽  
Luiz da Silva Vieira ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Essential Oil ◽  
Larval Development ◽  
Anthelmintic Activity ◽  
Gastrointestinal Nematodes ◽  
Gastrointestinal Parasites ◽  
Eucalyptus Citriodora ◽  
Egg Hatching

Phytotherapy may be an alternative strategy for controlling gastrointestinal parasites. This study evaluated the anthelmintic efficacy of Eucalyptus citriodora essential oil (EcEO). The in vitro effects of EcEO were determined through testing the inhibition of egg hatching and larval development of Haemonchus contortus. EcEO was subjected to acute toxicity testing on mice, orally and intraperitoneally. The in vivo effects of EcEO were determined by the fecal egg count reduction test (FECRT) in goats infected with gastrointestinal nematodes. The results showed that 5.3 mg.mL-1 EcEO inhibited egg hatching by 98.8% and 10.6 mg.mL-1 EcEO inhibited H. contortus larval development by 99.71%. The lethal doses for 50% of the mice were 4153 and 622.8 mg.kg-1, for acute toxicity orally and intraperitoneally. In the FECRT, the efficacy of EcEO and ivermectin was 66.25 and 79.16% respectively, on goat gastrointestinal nematodes eight days after treatment. EcEO showed in vitro and in vivo anthelmintic activity.

scholarly journals In Vitro Pharmacodynamics of Benzimidazole and Tetrahydropyrimidine Derivatives in European Bison Gastro-Intestinal Nematodes

2017 ◽  
Vol 74 (2) ◽  
pp. 167
Author(s):  
Laura CĂTANĂ ◽  
Aurora URSACHE ◽  
Alexandra PETCU ◽  
Flavia PETREAN ◽  
Raul CĂTANĂ
Keyword(s):  
Larval Development ◽  
Nematode Population ◽  
In Vitro Tests ◽  
European Bison ◽  
Egg Hatch ◽  
Parasitic Resistance ◽  
Faecal Samples ◽  
Egg Hatch Assay ◽  
Inducing Resistance

The present study was aimed to evaluate the efficacy of anthelmintic agents against intestinal nematodes found in European bison. It was performed between October 2016 and May 2017, using Egg Hatch Assay (EHA) and Larval Development Assay (LDA). The parasites were obtained from faecal samples, harvested from bisons in Romania and Sweden. The efficacy of albendazole (ABZ), mebendazole (MBZ) thiabendazole (TBZ) and pyrantel (PYR) was tested. In EHA, the maximum efficacy was observed in MBZ (EC50 = - 0.227 μg/ml), and then TBZ (EC50 = - 0.2228). ABZ had a weaker result, EC50 being 0.326 μg/ml. All tested benzimidazoles registered hatching percentages below 50%, reflecting the lack of parasitic resistance. MIC obtained in the LDA tests were 0.2144 μg/ml for TBZ, 0.2792 μg/ml for PYR, 0.5429 μg/ml for MBZ, while ABZ came last (MIC = 0.8187 μg/ml). The in vitro tests proved the antiparasitic molecules efficacy against bisons nematode population and a limited risk of inducing resistance phenomena.

Anthelmintic activity of plants against gastrointestinal nematodes of goats: a review

Parasitology ◽  
2019 ◽  
Vol 146 (10) ◽  
pp. 1233-1246 ◽  
Author(s):  
Francianne Oliveira Santos ◽  
Amanda Ponce Morais Cerqueira ◽  
Alexsandro Branco ◽  
Maria José Moreira Batatinha ◽  
Mariana Borges Botura
Keyword(s):  
Animal Feed ◽  
Chemical Constituents ◽  
Plant Secondary Metabolites ◽  
Herbal Medicines ◽  
Anthelmintic Activity ◽  
Gastrointestinal Nematodes ◽  
Free Living ◽  
Anthelmintic Effect

AbstractThe gastrointestinal nematodes (GIN) stand out as an important cause of disease in small ruminant, especially on goat farm. Widespread resistance to synthetic anthelminthics has stimulated the research for alternative strategies of parasite control, including the use of medicinal plants. The present work summarizes the in vitro and in vivo studies of plants with activity against GIN of goats, focusing on the description of chemical constituents related to this effect. This review retrieved 56 scientific articles from 2008 to 2018 describing more than 100 different plant species. The most frequently investigated family was Fabaceae (30.7%). Most in vitro studies on the activity of plant extracts and fractions were carried out with of free-living stages nematodes. In vivo studies were conducted mainly with the use of plants in animal feed and generally showed lower effectiveness compared to in vitro assays. The main plant secondary metabolites associated with anthelmintic effect are condensed tannins, saponin and flavonoids. However, the studies with compounds isolated from plants and elucidation of their mechanisms of action are scarce. Herbal medicines are thought to be promising sources for the development of effective anthelmintic agents.

scholarly journals Anthelmintic effect of thymol and thymol acetate on sheep gastrointestinal nematodes and their toxicity in mice

2017 ◽  
Vol 26 (3) ◽  
pp. 323-330 ◽  
Author(s):  
Weibson Paz Pinheiro André ◽  
Géssica Soares Cavalcante ◽  
Wesley Lyeverton Correia Ribeiro ◽  
Jessica Maria Leite dos Santos ◽  
Iara Tersia Freitas Macedo ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Biological Effects ◽  
Anthelmintic Activity ◽  
Gastrointestinal Nematodes ◽  
In Vitro Tests ◽  
Egg Hatch ◽  
In Vivo Test ◽  
Anthelmintic Effect

Abstract Thymol is a monoterpene and acetylation form of this compound can reduce the toxicity and enhance its biological effects. The objective of this study was to evaluate the effect of thymol and thymol acetate (TA) on egg, larva and adult Haemonchus contortus and the cuticular changes, acute toxicity in mice and the efficacy on sheep gastrointestinal nematodes. In vitro tests results were analyzed by analysis of variance (ANOVA) and followed by comparison with Tukey test or Bonferroni. The efficacy of in vivo test was calculated by the BootStreet program. In the egg hatch test (EHT), thymol (0.5 mg/mL) and TA (4 mg/mL) inhibited larval hatching by 98% and 67.1%, respectively. Thymol and TA (8 mg/mL) inhibited 100% of larval development. Thymol and TA (800 µg/mL) reduced the motility of adult worms, by 100% and 83.4%, respectively. Thymol caused cuticular changes in adult worm teguments. In the acute toxicity test, the LD50 of thymol and TA were 1,350.9 mg/kg and 4,144.4 mg/kg, respectively. Thymol and TA reduced sheep egg count per gram of faeces (epg) by 59.8% and 76.2%, respectively. In in vitro tests thymol presented better anthelmintic activity than TA. However TA was less toxic and in in vivo test efficacy was similar.

scholarly journals In Vitro Anthelminthic Efficacy of Hypoestes forskaolii (Vahl) R.Br (Acanthaceae) Extracts on Gastrointestinal Nematodes of Sheep

2018 ◽  
Vol 5 (4) ◽  
pp. 89 ◽  
Author(s):  
Massimiliano D’Ambola ◽  
Antonio Bosco ◽  
Andrea Ariano ◽  
Laura Rinaldi ◽  
Ammar Bader ◽  
...  
Keyword(s):  
Gastrointestinal Nematodes ◽  
Positive Control ◽  
Negative Control ◽  
Leaf Extracts ◽  
Egg Hatching ◽  
Egg Hatch ◽  
Faecal Samples ◽  
Nematode Eggs ◽  
Ovicidal Effects

The anthelminthic efficacy of the crude extracts of Hypoestes forskaolii (Vahl) R.Br (Acanthaceae) against gastrointestinal nematodes (GIN) in sheep was investigated using the in vitro egg hatch inhibition assay. Faecal samples were collected from sheep with naturally occurring infection of GIN (Trichostrongylus spp., Chabertia ovina, Cooperia spp., Haemonchus contortus and Teladorsagia spp.). Crude leaf extracts of H. forskaolii was obtained using increasing polarity solvents: n-hexane, chloroform, chloroform:methanol 9:1, methanol. Thiabendazole (0.2 µg/mL and 0.5 µg/mL) was used as a positive control and untreated GIN eggs in deionised water served as the negative control. All the extracts exhibited a weak ovicidal activity against GIN (less than 50% of egg hatch). Noteworthy, the n-hexane extract showed a percentage of inhibition of egg hatching greater than other extracts inhibiting the 30.8% at the concentration of 1 mg/mL showing a dose-dependent effect on nematode eggs hatching. Further studies are needed to investigate the effects of extracts used and to evaluate the ovicidal effects of other extracts of H. forskaolii.

Sign in / Sign up

Export Citation Format

Share Document