Anthelmintic Test Research Articles

Antiparasitic activity of the steroid-rich extract of Schima wallichii against poultry cestode.

Schima wallichii Korth., commonly known as the needlewood tree (family Theaceae) has therapeutic uses in traditional Mizo medicine for human helminthiasis and serves as a balm against ectoparasites in animals. Although the medicinal properties have been studied experimentally, its use as a traditional anthelmintic remains unexplored. This study aimed to analyze the chemical components and antiparasitic activity of S. wallichii. The chemical analysis of S. wallichi bark extracts was conducted focusing on the secondary metabolites using petroleum ether, chloroform, and methanol. Gas chromatography-mass spectrometry (GC-MS) was used to identify the specific compounds. An anthelmintic susceptibility test was carried out against Raillietina tetragona, intestinal cestode parasite of fowl. The methanol extract yielded the highest concentrations of alkaloids, carbohydrates, glycosides, sterols, saponins, and tannins among all the extracts. Sterols were the most abundant compounds in all extracts, with flavonoids being absent. Secondary metabolites were largely absent in the petroleum ether and chloroform extracts. The GC-MS data identified cholest-22-ene-21-ol as the major steroid component. The cestode parasite was inhibited in a concentration-dependent manner by the plant extract. The plant extract's anthelmintic activity was evident through observable damage to the parasite's outer structure. Phytosterols in S. wallichii bark are responsible for its anthelmintic properties. The mechanism and pharmaceutical properties of the anthelmintic molecule require further exploration.

In vivo Anti-Inflammatory and Antinociceptive Activity Evaluation of Brassica Rapa Ssp. Chinensis Ethanolic Extract with In Vitro Thrombolytic and Anthelmintic Activity Test

Objective: Brassica rapa ssp. chinensis is a well-known vegetable plant (Family: Brassicaceae) often grown as a type of Chinese cabbage. The present study was designed to explore the thrombolytic, anthelmintic, anti-inflammatory, and antinociceptive activities of ethanolic extract of the Brassica rapa ssp. chinensis leaves. Methods: The in vitro thrombolytic activity of the leaf extract was evaluated by clot analysis using Streptokinase as a standard drug. The in vitro anthelmintic activity was assessed by applying four different concentrations of the plant extract (10 mg/ml, 20 mg/ml, 40 mg/ml, and 60mg/ml) and recording the time of paralysis and death of worms. Two different doses (100mg/kg and 250mg/kg b.w.) were administered to evaluate the anti-inflammatory activity of the carrageenan-induced paw edema model. The antinociceptive activity was evaluated by hot plate test in mice by two different doses (200mg/kg and 400 mg/kg b.w.). Results: The ethanolic leave extract had thrombolytic action, which broke up blood clots that had already formed. The ethanolic leaf extract showed both paralysis and faster worm death at those concentrations in the anthelmintic test. The extract showed significant anti-inflammatory action in pedal edema compared to the control group. The results show that the highest level of anti-inflammatory action against carrageenan-induced hind paw edema may be achieved with an ethanolic extract of Brassica rapa ssp. chinensis (250 mg/kg, p.o.). The proportion of maximum possible effect in the hot plate test was 82.49 percent in the antinociceptive evaluation. Conclusion: The pharmacological test of leaf extract endorsed the clinical uses of Brassica rapa ssp. chinensis in treating thrombosis, intestinal worms, and inflammation. Thus, this plant could be subjected to extensive bioactive compounds to discover novel therapeutic agents. Keywords: Brassica rapa ssp. chinensis, ethanolic extract, thrombolytic activity, anthelmintic activity, anti-inflammatory activity, antinociceptive activity

Seasonal Prevalence and Status of Anthelmintic Resistance of Goats' Gastrointestinal Nematodes, Mirab Abaya, Southern Ethiopia.

Goats are an important source of livelihood especially for smallholder communities. But gastrointestinal nematodosis is the greatest threats of goat production. A repeated cross-sectional and field experimental study design was conducted from December 2020 to August 2021 in Mirab Abaya district, with the aim of seasonal prevalence gastrointestinal nematode infection and assessment of anthelmintic resistance. A systematic random sampling strategy was used to select the study goats. The overall prevalence of gastrointestinal nematode infections of goats in the study area was 57.9% (95% CI: 54.4-61.4), of which 48.7% (95% CI: 43.7-53.7) and 67.2% (95% CI: 62.3-71.7) accounted to dry and wet seasons, respectively. The multivariable logistic regression analysis showed that season, age, sex, and flock size were significantly (p < 0.05) influenced the prevalence of gastrointestinal nematode infection of goats. The number of eggs per gram of faeces (EPG) was ranged from 100 to 2500. The overall mean egg per gram of faeces (EPG) was 461.1 ± 20.9. The mean EPG of wet season (532.7 ± 28.6) was higher than the dry season (362.3 ± 29.1). From faecal culture, 552 nematode larvae were recovered, and the most commonly identified nematode genera were Haemonchus (36.4%) that followed by Trichostrongylus (28.1%), Oesophagostomum (15.4%), Bunostomum (11.4), Teladorsagia (5.4%), and Strongyloides (3.0%) species. From the anthelmintic resistance test in the field, the percentage reduction and 95% confidence limit of albendazole were 96% (84.2-99.0) and 97.0% (84.6-99.4) in dry and wet seasons, respectively. Here, the lower limit of 95% CI was less than 90% both in dry and wet seasons; and hence, albendazole was suspected for resistance development by gastrointestinal nematode. From a pooled faecal culture that collected from albendazole-treated goats, Haemonchus species was recovered. Therefore, due attention shall be by animal health professionals in the area in the use of albendazole. Animal health extension work to create awareness of how anthelmintic is used is helpful in reducing the risk. Changing the type of anthelmintic drug after using for some period will minimize the risk of anthelmintic resistance development.

Exploration of Anthelmintic, Blood Coagulant, Diuretic and Laxative Activities of Different Solvent Fractions of Flagellaria Indica Leaves

Flagellaria indica (Family: Flagellariaceae) is a common climbing plant found primarily in tropical regions of many countries. The plant has various traditional uses, although most of them lack scientific published reports. The crude ethanolic extract of F. indica leaves was fractionated based on polarity using water, ethyl acetate, and n-hexane. Biological screening was conducted on the anthelmintic, blood coagulation, diuretic, and laxative activities of the water, ethyl acetate, and n-hexane fractions of F. indica leaves. In the anthelmintic test, the n-hexane fraction showed a moderate effect with paralysis times of 16.79 and 13.62 minutes and death times of 27.34 and 21.81 minutes, respectively, at doses of 25 and 50 mg/mL.In the blood coagulant test, only the water fraction showed a notable effect. The clotting times were 4.33, 6.02, 7.68, and 8.32 minutes, respectively, at doses of 200, 100, 50, and 25 mg/mL. Diuretic activity was performed to determine the increase in the volume of excreted urine, and electrolyte analysis of urine was performed to determine pH, density, conductance, and Na+, Cl-, K+ levels, as well as natriuretic, kaliuretic, saluretic, and CAI indexes. The ethyl acetate fraction showed better diuretic activity than the n-hexane fraction, while the water fraction did not reveal a notable diuretic effect. The Na+, Cl-, K+, natriuretic, and saluretic indexes were found satisfactory in the ethyl acetate fraction, and the CAI index was better in the n-hexane fraction. In the laxative test, the n-hexane fraction showed the best laxative properties, with an increase in stool weight of 38% and 54% at doses of 250 and 500 mg/kg, respectively. These results suggest that different fractions of F. indica leaves contain distinct phytochemicals that may be responsible for these biological effects. The isolation of bioactive compounds could help justify its traditional uses in modern medicine.

Synthesis and anthelmintic activity of novel thiosemicarbazide and 1,2,4-triazole derivatives: In vitro, in vivo, and in silico study

IntroductionIntestinal parasitic infections are neglected diseases and, due to the increasing resistance of parasites to available drugs, they pose an increasing therapeutic challenge. Therefore, there is a great need for finding new compounds with antiparasitic activity. Objectives: In this work, new thiosemicarbazide and 1,2,4-triazole derivatives were synthesized and tested for their anthelmintic activity. MethodsThe synthesis was carried out by classical methods of organic chemistry. Anthelmintic activity tests were carried out in vitro (Rhabditis sp., Haemonchus contortus, Strongylidae sp.) in vivo (Heligmosomoides polygyrus/bakeri), and in silico analysis was performed. ResultsQuinoline-6-carboxylic acid derivative compounds were designed and synthesized. The highest activity in the screening tests in the Rhabditis model was demonstrated by compound II-1 with a methoxyphenyl substituent LC50 = 0.3 mg/mL. In the next stage of the research, compound II-1 was analyzed in the H. contortus model. The results showed that compound II-1 was active and had ovicidal (percentage of dead eggs > 45 %) and larvicidal (percentage of dead larvae > 75 %) properties. Studies in the Strongylidae sp. model confirmed the ovicidal activity of compound II-1 (percentage of dead eggs ≥ 55 %). In vivo studies conducted in the H. polygyrus/bakeri nematode model showed that the number of nematodes decreased by an average of 30 % under the influence of compound II-1. In silico studies have shown two possible modes of action of compound II-1, i.e. inhibition of tubulin polymerization and SDH. The test compound did not show any systemic toxic effects. Its influence on drug metabolism related to the activity of cytochrome CYP450 enzymes was also investigated. ConclusionThe results obtained in the in vitro, in vivo, and in silico studies indicate that the test compound can be described as a HIT, which in the future may be used in the treatment of parasitic diseases in humans and animals.

Analgesic and anthelmintic activities in common fruits of the Sundarbans mangrove forest, Bangladesh

The analgesic and anthelmintic activities of the common fruits in the Sundarbans forest, Bangladesh were evaluated. Acetic acid-induced writhing test and hot plate test in mice model were demonstrated for examining the analgesic activity whereas an anthelmintic test was performed using a flatworm, Paramphistomum cervi of livestock ruminants. Among the fruits, Ceriops decandra showed the strongest analgesic activity through inhibiting acetic acid-induced writhing (45%) and increasing response time (16.8 sec) on a hot plate in mice at 250 mg extract/kg body weight (b.w.). Diclofenac sodium (25 mg/kg b.w.), a positive control, demonstrated writhing inhibition of 51.3% whereas morphine (10 mg/kg b.w.), a wellknown centrally active analgesic drug, increased response time of 18.2 sec. The fruits showed inhibition of acetic acid-induced writhing in mice with strong correlations to both the total polyphenols (r2 = 0.85) and the total flavonoids (r2 = 0.81) contents. Similar results were also observed for an increase of response time in mice on hot plate test. Therefore, both the peripheral and the central analgesic activities of the fruits were profoundly related to their total contents of polyphenols as well as flavonoids. Extract of Aegiceras corniculatum fruit displayed the strongest anthelmintic activity with the lowest CDT50 (concentration for death time 50) of 0.69 mg extract/ml whereas albendazole, a positive control, had CDT50 of 5.60 mg/ml for the parasite. The anthelmintic activity of the fruits was not dependent on their contents of polyphenols (r2 = 0.30) or flavonoids. The chromatograms of HPLC-DAD analysis detected caffeic acid, (+)-catechin hydrate, p-coumaric acid, (-)-epicatechin, rutin hydrate, and syringic acid in C. decandra fruit extract and quantified as 10.6, 598.4, 1.5, 28.5, 2 and 1.3 mg/100 g extract, respectively. Results revealed that C. decandra and A. corniculatum fruits are the potentials to treat pain and helminthiasis, respectively. Bangladesh J. Bot. 52(1): 79-86, 2023 (March)

In vitro cytotoxic, thrombolytic, anthelmintic and antioxidant activities of Litsea monopetala: a medicinal plant

The present study was conducted to assess the cytotoxicity, thrombolytic, anthelmintic and antioxidant activity of mehanolic extract of Litsea monopetala (Family: Lauraceae) leaves in laboratory using in vitro methods. Cytotoxicity test was done by brine shrimp lethality bioassay where the extract concentration was 400, 200, 100, 50, 25, 12.5, 6.25, 3.125, 1.5625, 0.78125 (µg/ml). In vitro thrombolytic activity of Litsea monopetala was performed by clot lysis method using extract concentration 2.5, 5, 10 and 20 (mg/mL) in saline water. Anthelmintic activity test was done by using adult earthworms where 10, 20, 40, 60, 80 (mg/ml) extract concentration were used. Finally antioxidant activity was determined by total phenolic content determination using Folin-Ciocalteu reagent. The Litsea monopetala extract showed cytotoxic activity against brine shrimp nauplii and LC50 value was 41.05(µg/ml) and the investigated thrombolytic activity in our research was 9.52, 9.49, 13.64 and 17.50 % respectively as % of clot lysis. The paralysis time were at 76.75 min, 60 min, 51.75 min, 44.5 min and 64.5 min and death were at 90.50min, 63.75min, 55.50min, 44.75min and 71min. respectively. The Litsea monopetala extract displayed significant antioxidant activity which was 20.75 (mg of GAE / gm) of extracts. The activities observed could be attributed to presence of some of the phytochemicals which have been related with cytotoxic, thrombolytic, anthelmintic and antioxidant property.

Anthelmintic, antioxidant, and cytotoxic activities of Chenopodium album against Haemonchus contortus: A combined in vitro and in silico study

Haemonchus contortus is a gastrointestinal nematode that negatively affects the meat and milk production of husbandry animals. The purpose of the study was to determine the anthelmintic activity of Chenopodium album plant extract in controlling H. contortus parasites. The antioxidant, cytotoxic, and antibacterial activities of the C. album plants were also investigated. In an anthelmintic activity test, 100% of H. contortus parasite mortality was observed after 3 h exposure at a dose of 150 μg/mL. The antioxidant properties of C. album showed an IC50 value of 90.98 μg/mL, indicating moderate antioxidant activity when compared to the BHT standard. The cytotoxic effect showed LC50 values of 4.52, 3.11, 2.3, 1.52, and 1.167 μg/mL after 12, 18, 24, 30, and 36 h against Artemia salina, respectively. However, the C. album extract did not demonstrate any antibacterial properties against Bacillus subtilis, Staphylococcus aureus, Salmonella typhi, Shigella dysentriae, Shigella boydii, or E. coli at a concentration of 150 μg/mL. A molecular docking study showed that isolariciresinol 4'-O-beta-D-glucoside, (1S,2S,4R)-1,8-epoxy-p-menthan-2-ol glucoside and linalool (CID-74407576, CID-73815050, and CID-6549) had binding energies of −7.8, −7.5, and −7.1 kcal/mol, respectively, with the Nu-class GST protein. Moreover, the ADMET properties of hit compounds also similarly showed ideal behavior to known drug molecules. Hence, C. album could be a promising candidate for developing an effective drug against H. contortus.

Exploration of Pharmacological and Toxicological Properties of Aerial Parts of Blumea lacera, a Common Weed in Bangladesh

Blumea lacera (Family Asteraceae) is a herb found in the uncultivated lands of many Asian countries. This plant is used by quack doctors for some medicinal purposes. Works presented in this manuscript were conducted on the ethanol extract of aerial parts of B. lacera. Various pharmacological tests like antioxidant, analgesic, anti-inflammatory, antidiarrheal, diuretic, antibacterial, anthelmintic and toxicological tests like brine shrimp lethality and acute toxicity were evaluated. Antioxidant test was conducted by determining secondary metabolites content and DPPH free radical scavenging assay. Acetic acid-induced writhing method, xylene-induced ear edema method, castor oil-induced diarrheal method, and urinary volume test were performed to evaluate the analgesic, anti-inflammatory, antidiarrheal and diuretic effects, respectively. The antibacterial test was performed by disk diffusion method, anthelmintic activity by recording the paralysis and death time of P. cervi and finally, cytotoxic activity was performed by brine shrimp lethality bioassay. TPC, TFC and TTC contents of B. lacera extract were found to be 9 mg GAE/g, 31 mg QE/g and 18 mg GAE/g. The SC50 value of the DPPH radical scavenging assay was found to be higher than 3000 µg·mL-1. The LD50 value of B. lacera extract in mice was higher than 5000 mg·kg-1. This extract significantly inhibited writhing reflexes by 24.5% and 43.6% and reduced ear edema up to 24.6% and 41% at 250 and 500 mg·kg-1 bw doses, respectively. It also increased the latency of the first defecation period up to 52.8 min and 106.6 min as well as decreased the stool count by 34.1% and 48.2% at 250 and 500 mg·kg-1 bw doses, respectively. It also showed an increase in urinary output in the diuretic test. Good antibacterial activity of B. lacera extract was confirmed by retardation in bacterial growth and significantly killed P. cervi in a dose-dependent manner. In brine shrimp lethality bioassay, the LC50 value was found to be 5.4 µg·mL-1. B. lacera showed mild analgesic, anti-inflammatory and antidiarrheal properties. It could be used as a diuretic, antibacterial, anthelmintic and cytotoxic drug which justify the plant's traditional uses in folk medicine.

Anthelmintic Test of Combination of Carrot Peels (Daucus carota L.) and Pineapple Peels (Ananas comusus) Juice Against Silkworms (Tubifex sp)

Background: Anthelmintics is a treatment used as an anti-worm that can eradicate worms in the human and animal bodies, one of which is against silk worms (Tubifex sp). One of the plants that may be used as anthelmintics is carrot skin (Daucus carota L.) and pineapple skin (Ananas comusus). Carrot peel contains flavonoids, quercetin, and tannins as anthelmintics and pineapple peel contains flavonoids, bromealin enzymes and tannins, so researchers are interested in making a combination of carrot peel juice and pineapple peel juice as an anthelmintic against silk worms (Tubifex sp). Objective: This study aims to determine the effectiveness of the combination of carrot peel and pineapple peel juice in eradicating silk worms (Tubifex sp). Methods: The method used is the squeeze method, specific specific standardization, lethal time test, paralysis time test. , the anthelmintic activity test of the combination of carrot peel juice and pineapple peel extract with concentrations of F1 25%: 75%, F2 50%: 50%, F3 75%: 25% using positive control Albendazole 0.06% w/v. The research data were analyzed using the Oneway Anova test. Results: The results of this study showed that the combination of carrot peel extract 75%: pineapple peel 25% had the best anthelmintic effectiveness against the lethal time. The anthelmintic effectiveness test obtained from the combination of carrot juice 25%: pineapple juice 75% showed the best results during paralysis time. The lethal time test of the combination of carrot peel and pineapple juice obtained an average time of death in F1 of 15.32 minutes. In F2, the average time of death was 18.155 minutes, while in F3 it was 20.37 minutes and the Oneway Anova result was p=0.000 (p&lt;0.05). The paralysis time test for the combination of carrot peel and pineapple juice was found to have an average paralysis time of 13.625 minutes in F1. In F2, the average paralysis time was 13,733 minutes, while in F3 18,712 minutes and the Oneway Anova result was p=0,000 (p&lt;0,05). Conclusion: The best combination of juice for the time of death is F1 with a concentration of 25% carrot juice: 75% pineapple juice, while the best combination for paralysis time is F1 with a 25% carrot juice concentration: 75% pineapple juice. Keywords : Carrot Peels (Daucus carota L.), Pineapple Peels (Ananas comosus), Anthelmintics, Tubifex sp

In vitro cytotoxic, thrombolytic, anthelmintic and antioxidant activities of Litsea monopetala: A medicinal plant

The present study was conducted to assess the cytotoxicity, thrombolytic, anthelmintic and antioxidant activity of mehanolic extract of Litsea monopetala (Family: Lauraceae) leaves in laboratory using in vitro methods. Cytotoxicity test was done by brine shrimp lethality bioassay where the extract concentration was 400, 200, 100, 50, 25, 12.5, 6.25, 3.125, 1.5625, 0.78125 (µg/ml). In vitro thrombolytic activity of Litsea monopetala was performed by clot lysis method using extract concentration 2.5, 5, 10 and 20 (mg/mL) in saline water. Anthelmintic activity test was done by using adult earthworms where 10, 20, 40, 60, 80 (mg/ml) extract concentration were used. Finally antioxidant activity was determined by total phenolic content determination using Folin-Ciocalteu reagent. The Litsea monopetala extract showed cytotoxic activity against brine shrimp nauplii and LC50 value was 41.05(µg/ml) and the investigated thrombolytic activity in our research was 9.52, 9.49, 13.64 and 17.50 % respectively as % of clot lysis. The paralysis time were at 76.75 min, 60 min, 51.75 min, 44.5 min and 64.5 min and death were at 90.50min, 63.75min, 55.50min, 44.75min and 71min. respectively. The Litsea monopetala extract displayed significant antioxidant activity which was 20.75 (mg of GAE / gm) of extracts. The activities observed could be attributed to presence of some of the phytochemicals which have been related with cytotoxic, thrombolytic, anthelmintic and antioxidant property.

In Vitro Potential of the Acetone Leaf Extract and Fractions of Psychotria capensis (Eckl.) Vatke (Rubiaceae) to Combat Co-Infection of Tuberculosis and Helminthiasis.

Tuberculosis (TB) is a disease of global importance that affects millions of people. Approximately a quarter of the world’s population is currently infected with M. tuberculosis, and about 10% of those infected will develop into active disease, particularly immune compromised individuals. Helminthiasis is of global health importance, affecting over 2 billion people mostly in resource-poor countries. Co-infection with tuberculosis (TB) and helminths (worms) is an emerging global public health concern with both affecting about one-third of the global population. Chronic infection with helminths can result in impaired immune responses to TB as well as enhancing failure to TB therapy and BCG vaccination. Antimycobacterial and anthelmintic activities of the acetone extract and fractions of Psychotria capensis were evaluated, including their in vitro safety. In addition, the anti-inflammatory and immunomodulatory effect of the fractions and crude extract of P. capensis were assessed. Antimycobacterial activity of the extract and fractions was tested against four non-tuberculous mycobacteria (Mycobacterium smegmatis, M. fortuitum, M. aurum, M. bovis BCG) and pathogenic M. tuberculosis H37Rv while the Egg Hatch Assay (EHA) was used for the anthelmintic test on eggs of Haemonchus contortus. Cytotoxicity was determined against Vero kidney cells while in vitro immune modulation via cytokine production was determined on activated macrophages. The minimum inhibitory concentration (MIC) values of the Psychotria capensis acetone extract and fractions ranged from 39 to 1,250 μg/ml with the crude extract and hexane fraction having the best MIC values (both 39 μg/ml). In the EHA, the inhibitory concentration (IC50) ranged from 160 to 630 μg/ml with the hexane fraction having the best activity. The hexane and chloroform fractions were relatively non-toxic with LC50 values of 290 and 248 μg/ml respectively, while the acetone crude extract (64 μg/ml) and n-butanol fraction (71 μg/ml) were moderately toxic. The SI values (LC50/MIC) ranged from 0.1 to 7.4 with the hexane fraction having the highest value against M. smegmatis (7.4). The hexane fraction had the best dual anthelmintic and antimycobacterial activity. This fraction had the best NO inhibitory activity and was the least cytotoxic, indicating that its activity was not due to general metabolic toxicity, with 96.54% cell viability. Pro-inflammatory cytokines such as IL-12p70 were upregulated while IL-10 expression was inhibited by the extracts. Compounds were detected using GC-MS analysis, and in both the crude acetone extract and the hexane fraction was the diterpene neophytadiene, which has anti-inflammatory and antimicrobial activity. Finding alternative or complementary approaches to dealing with TB infections by, amongst other things, reducing the incidence of helminth infestations may lessen the burden of TB, contributing to slowing the spread of multi-drug resistance.

Uji Antelmintik dari Ekstrak Etanol Daun Kadamba (Mitragyna speciosa)

Diseases caused by parasites, especially worms in animals on farms, are one of the problems that farmers often face. Worm disease can decrease the productivity of livestock and cause a decrease in the selling value of livestock at the market. The most common worm disease that attacks livestock is Paramphistomum sp. The treatment of this disease uses nutritious plants, which is one of the alternatives chosen to minimize side effects due to the administration of synthetic drugs. Kadamba leaf was chosen in this study because one of the medical plants that have potential compounds as anthelmintics. The aim of this research is to know the anthelmintic activity of kadamba leaf extract to Paramphistomum sp. 210 samples of Paramphistomum sp. were taken from cow rumen at Tanah Merah slaughterhouses. This study was conducted in vitro with seven experimental groups consisting of one positive control (Albendazole), one negative control (NaCl), and five groups of kadamba leaf extract with concentrations of 2,5%, 5%, 7,5%, 10 %, 12,5% with three replications. The results of the study showed the yield of kadamba leaf extract was 13,88%, and the anthelmintic test showed that kadamba leaf extract had anthelmintic activity against Paramphistomum sp. at all concentrations.

Scrutinizing pharmacological efficiency for Acacia auriculiformis by experimental and computational approach

BackgroundThe study sought to investigate the biological efficacy of methanol leave extract of Acacia auriculiformis (MEAA) via in vitro, in vivo, in silico approaches. The in vitro cytotoxicity was evaluated through brine shrimp lethality assay, and anti-inflammatory activity was determined by membrane stabilisation and protein denaturation methods (BSA and egg albumin). The in vivo antipyretic activity was examined via Brewer’s yeast induced pyrexia model.ResultsA. auriculiformis extract unveiled moderate cytotoxicity with significant anti-inflammatory efficacy (p < 0.001) compared to standard drug. This extract also exhibited dose-dependent time of paralysis and death for the worm (p < 0.001) in the anthelmintic test which was directly proportional to employed concentrations. A notable percentage of clot lysis effect (36.42 ± 1.95%, p < 0.001) was also observed for MEAA in human blood compared to control. However, this extract significantly (p < 0.05) reduced fever in a dose-dependent manner during the antipyretic experiment. Besides, in computer-aided investigations, two compounds (2,4-ditert-butylphenol and 3-hydroxy-β-damascone) revealed the best binding interaction with six proteins for cytotoxicity, inflammation, helminthic, thrombolytic and pyretic effect. Moreover, these two compounds satisfy Lipinski’s ‘Rule of Five’ and revealed drug-likeness profiles in the toxicological study.ConclusionsThese findings disclosed that methanol leaves extract of A. auriculiformis might be a potent source for anti-inflammatory, anti-helminthic, thrombolytic and antipyretic agents.

A study on Litsea monopetala for evaluating its pharmacological properties

Aims: To assess the cytotoxicity, thrombolytic, anthelmintic and antioxidant activity of mehanol extract of Litsea monopetala (Family: Lauraceae) leaves in laboratory using in vitro methods.Methods: Cytotoxicity test was done by brine shrimp lethality bioassay where the extract concentration was 400, 200, 100, 50, 25, 12.5, 6.25, 3.125, 1.5625, 0.78125 (µg/ml). In vitro thrombolytic activity of Litsea monopetala was performed by clot lysis method using extract concentration 2.5, 5, 10 and 20 (mg/mL) in saline water. Anthelmintic activity test was done by using adult earthworms where 10, 20, 40, 60, 80 (mg/ml) extract concentration were used. Finally antioxidant activity was determined by total phenolic content determination using Folin-Ciocalteu reagent.Result: The Litsea monopetala extract showed cytotoxic activity against brine shrimp nauplii and LC50 value was 41.05(µg/ml) and the investigated thrombolytic activity in our research was 9.52, 9.49, 13.64 and 17.50 %  respectively as % of clot lysis. The paralysis time were at 76.75 min, 60 min, 51.75 min, 44.5 min and 64.5 min and death were at 90.50min, 63.75min, 55.50min, 44.75min and 71min. respectively. The Litsea monopetala extract displayed significant antioxidant activity which was 20.75 (mg of GAE / gm) of extracts.Conclusions: The activities observed could be attributed to presence of some of the phytochemicals which have been related with cytotoxic, thrombolytic, anthelmintic and antioxidant property.

Benchmarking Australian sheep parasite control practices: a national online survey

Context The third Australian national survey on control practices for internal and external parasites of sheep, following similar surveys in 2003 and 2011. Aims To document current parasite control practices and attitudes, measure change and to provide a benchmark against which to assess future practices and attitudes. Methods An online survey emailed to 6460 sheep producers, with a paper version supplied on request. A follow up short survey was conducted to assess non-response bias. Analysis by region and key sheep enterprise. Key results There were 354 and 250 useable responses to the main and short surveys respectively. Mean reported rainfall of 407 mm in 2018 was 27% lower than the average for respondents and &amp;gt;200 mm lower than mean reported rainfall in the previous surveys. The top three methods for worm control over the past 5 years were preventative treatments (74%), preparing clean pastures by spelling paddocks (62%) and treatment on the basis of faecal worm egg count (WEC, 54%). The proportion of respondents using WEC monitoring in 2018 was 40.4%, with a mean frequency of 3.1/year, and this was unaffected by sheep class. The frequency of anthelmintic treatment for ewes and lambs and weaners was 2.1/year. Of the respondents, 36.7% had performed an anthelmintic resistance test in the previous 5 years. The most popular flystrike control methods were timing of crutching (76.4%), preventative chemical treatment (75.9%), timing of shearing (63.1%), mulesing (46.8%) and genetic selection (46.4%). Pain relief was widely used for mulesing ewes (86.6%) and wethers (90.9%). Only 17.3% used Australian Sheep Breeding Values for traits in rams. Most respondents reported ‘evidence of lice’ in the past 5 years (55.8%) and had treated for lice off shears (50.1%), short wool (16.6%) or long wool (6.6%), with only 26.7% having not treated at all in the period. Web-based sources of information on parasite control have become increasingly important. Conclusions Notable changes since the earlier surveys were high rates of pain relief when mulesing, an increase in the use of Australian Sheep Breeding Values for parasite-related traits, an increase in WEC monitoring since 2011 and an increased use of web-based resources. Implications Parasite control remains important for sheep producers and continues to evolve with new drugs and approaches. The surveys highlight the effectiveness of extension networks and identify where more attention is required.

Antidiarrheal, Analgesic, and Anthelmintic Activities of Honeys in the Sundarbans Mangrove Forest, Bangladesh.

This study evaluated the antidiarrheal, analgesic, and anthelmintic activities of honey samples from the Sundarbans mangrove forest of Bangladesh. Composite raw honey (RH), and its diethyl ether (DEH), ethanol (ETH), methanol (MEH), and distilled water (DWH) fractions were investigated. RH and its fractions strongly inhibited castor oil-induced diarrheal episodes in mice at a concentration of 250 mg/kg body weight (b.w.) (P<0.05). At this concentration, RH, DEH, ETH, MEH, and DWH showed inhibitory activity on diarrheal episodes at 43.8, 47.4, 29.8, 12.3, and 38.5%, respectively, whereas for the inhibitory activity for the positive control (PC, 3 mg loperamide/kg b.w.) was 47.4%. Similarly, DEH (250 mg/kg b.w.) showed strongest inhibition (63.5%) of acetic acid-induced writhing in mice, followed by RH (55.7%), ETH (46.2%), MEH (37.6%), and DWH (32.9%). In a hot plate test, mice treated with DEH at a concentration 250 mg/kg b.w. showed the greatest increase in response time, followed by treatment with RH. RH was further used in an anthelmintic test, where it showed a strong dose-dependent reduction in both the paralysis time and the time until death of the parasite, Paramphistomum cervi. Honeys in the Sundarbans could therefore be of great use as nutraceuticals.

Synthesis, Spectral Characterization, in vitro Antimicrobial and Anthelmintic Evaluations of Cu(II) Complexes with a New Schiff Base

Novel Schiff base ligand (E)-2-((3-(benzyloxypyridinylimino) methyl)-4-bromophenol (HL) was synthesized. Using this Schiff base ligand, two new copper(II) complexes, C1 and C2 were prepared. Analytical techniques such as IR, 1 H NMR, 13 C NMR, mass, UV–visible spectroscopy, molar conductivity, magnetic measurement, ESR and TGA-DTA were used to characterize the ligand HL and its copper complexes. From the ESR spectra, square planar geometry was proposed for C1 and C2. The synthesized ligand, HL along with its copper(II) complexes were subjected to test their in vitro biological efficacies against four bacterial strains Escherichia coli, Salmonella typhi, Bacillus subtilis and Staphylococcus aureus and two antifungal strains Candida albicans and Aspergillus niger. The results obtained from this work suggest that the studied metal complexes are very effective in biological activities than its ligand. The anthelmintic test of the ligand HL and copper complexes against earthworms, Pheretima posthuma are also investigated. DOI: http://dx.doi.org/10.17807/orbital.v10i7.1168

Antiallergic, anthelmintic and cytotoxic potentials of dried aerial parts of Acanthus ilicifolius L.

BackgroundAcanthus ilicifolius L. is admired for its traditional usage in the folk medicine for the treatment of numerous diseases including allergy and helminthiasis in various parts of the planet. The ethanolic extract of the aerial parts of this shrub (EEAI) was investigated in the present study for its major phytochemical groups, antiallergic activity, anthelmintic activity, cytotoxicity and for acute toxicity.MethodsAntiallergic activity was carried out using Toluene 2, 4-diisocyanate (TDI)-induced allergic mice model by assessing various symptoms of allergic rhinitis like sneezing, scratching, swelling and watery rhinorrhea as well as counting the total and differential leukocytes profile of blood. The paralysis and death time of parasites, Haemonchus contortus (Nematoda) and Paramphistomum cervi (Trematoda) were used for anthelmintic activity test. Mortality of mice was counted to evaluate the acute toxicity whereas the mortality of brine shrimp was taken into account to assess cytotoxic potential of the extract.ResultsPhytochemical screening of the extract demonstrated the presence of alkaloids, phenolic compounds, tannins, flavonoids, glycosides, saponins, steroids and triterpenoids. Oral pretreatment of the extract significantly ameliorated the TDI-induced allergic symptoms like sneezing (p < 0.05), scratching (p < 0.05), swelling and watery rhinorrhea in experimental mice. The extract also reduced the differential count of leukocytes in the blood which was increased due to induction of allergic conditions through TDI sensitization. In anthelmintic activity test the extract revealed a dose dependent decrease in the relative index of paralysis and death for both H. contortus and P. cervi parasites and thus indicated the extract to be parasiticidal at higher concentrations. In brine shrimp lethality bioassay of toxicity assessment, the LC50 of the standard drug vincristine sulfate was 0.43 μg/mL whereas the extract showed the LC50 as 44.57 μg/mL indicating a promising cytotoxicity of the extract. In acute toxicity study the highest dose 3 g/kg failed to show any mortality in Swiss albino mice and thus confirmed the safety of the extract for in vivo administration.ConclusionsThe present study corroborated the traditional uses of the aerial parts of Acanthus ilicifolius L. in allergic diseases and in helminthiasis.

Overcoming barriers to implementing targeted worming strategies

Equine practices cannot fail to be aware of the need to implement sustainable parasite control strategies, yet engagement with practice-led targeted worming plans remains poor and many owners persist with interval dosing strategies or they administer anthelmintics in a haphazard manner. Veterinary practices should be in a position to be able to offer a better service to their clients than any other provider, if they have the motivation to do so. Practices that do use worming plans to their advantage can see benefits from increased anthelmintic and laboratory test sales, improved uptake of other packaged services and greater client engagement with the practice.