scholarly journals Study the antinociceptive effect of the Zingiber officinale ethanolic extract and Vitamin C in rats

2010 ◽  
Vol 34 (1) ◽  
pp. 171-175
Author(s):  
Wisam. H. S. AL- Shebani
Keyword(s):  
Vitamin C ◽  
Visceral Pain ◽  
Antinociceptive Effect ◽  
Combined Treatment ◽  
Ethanolic Extract ◽  
Ethanol Extract ◽  
Zingiber Officinale ◽  
Latency Time ◽  
Significant Prolongation ◽  
Nociceptive Responses

The present study was designed to investigate the antinociceptive activity of seperate andcombined treatments of ethanol extract of Zingiber officinale rhizomes and vitamin C onvisceral nociception induced by intraperitoneal injection of 2% acetic acid which producedwrithing in rats. The preliminary chemical tests were performed on the extract and revealed thepresence of flavanoids, alkaloids and tannins. Visceral nociceptive responses including thelatency time to beginning of the first writhe, number of writhes per hour and the inhibitionpercentage of writhing. Seperate i. p. injection of ethanol extract of Zingiber officinale at dose of25 and 50 mg/kg BW caused significant (P<0.01) increase in latency time and significant(P<0.01) reduction in writhing number. Seperated i. p. injection of vitamin C at dose of 10mg/kg BW caused significant (P<0.05) reduction in writhing number, whereas, i. p injection ofvitamin C at dose of 15 mg/kg BW produced significant prolongation in latency time andreduction in writhing number (P<0.01). Combined treatment with ethanol extract ofZingiber officinale at dose of 25 mg/kg BW and vitamin C at dose of 10 mg/kg BW. i.p.produced significant suppression (P<0.01) in pain responses as compared with the effect of thesame doses when used each seperately. It is concluded that both ethanol extract of Zingiberofficinale rhizomes and vitamin C are able to suppress visceral pain, and vitamin C potentiatesthe antinociceptive effect of the ethanol extract of Zingiber officinale rhizomes

Orofacial antinociceptive effect of the ethanolic extract of Annona vepretorum Mart. (Annonaceae)

2016 ◽  
Vol 71 (7-8) ◽  
pp. 209-214 ◽  
Author(s):  
Juliane C. Silva ◽  
Larissa A.R.O. Macedo ◽  
Grasielly R. Souza ◽  
Raimundo G. Oliveira-Junior ◽  
Sarah R.G. Lima-Saraiva ◽  
...  
Keyword(s):  
Orofacial Pain ◽  
Antinociceptive Effect ◽  
Ethanolic Extract ◽  
Ethanol Extract ◽  
Upper Lip ◽  
Antinociceptive Effects ◽  
Rubbing Behavior ◽  
Pre Treatment ◽  
The Right ◽  
Orofacial Nociception

Abstract Annona vepretorum Mart. (Annonaceae) is a species popularly known in Brazil as “araticum” and “pinha da Caatinga”. We have evaluated the antinociceptive effects of A. vepretorum in formalin-, capsaicin-, and glutamate-induced orofacial nociception in mice. Male Swiss mice were pretreated with either saline (p.o.), A. vepretorum ethanol extract (Av-EtOH 25, 50 and 100 mg/kg, p.o.), or morphine (10 mg/kg, i.p.), before formalin, capsaicin, or glutamate was injected into the right upper lip. Pre-treatment with Av-EtOH at all doses produced a reduction in face-rubbing behavior induced by formalin in both phases, and these pre-treatments also produced a significant antinociceptive effect in the capsaicin and glutamate tests. Pre-treatment with naloxone (1.5 mg/kg, i.p.) did not reverse the antinociceptive activity of the extract at the dose of 100 mg/kg in the first phase of this test. Our results suggest that Av-EtOH might be useful in the treatment of orofacial pain.

scholarly journals Antioxidant activity from ethanol extract of red seaweed (Galaxaura rugosa)

2021 ◽  
Vol 11 (2) ◽  
pp. 79
Author(s):  
Bhayu Gita Bhernama ◽  
Witri Maulidy Ayu ◽  
Cut Nuzlia
Keyword(s):  
Antioxidant Activity ◽  
Free Radicals ◽  
Vitamin C ◽  
Ethanolic Extract ◽  
Ethanol Extract ◽  
Positive Control ◽  
Red Seaweed ◽  
Oxidation Reactions ◽  
Ic50 Value ◽  
Dpph Method

Antioxidants are compounds that can delay, reduce, slow down or inhibit oxidation reactions from free radical reactions. Antioxidants donate electrons to unstable free radicals so that these free radicals can be neutralized to not interfere with the body's metabolic processes. Red seaweed Galaxaura rugosa has potential as an antioxidant. The study aimed to determine the antioxidant activity of the ethanol extract of red seaweed Galaxaura rugosa against DPPH free radicals based on the IC50 value. Phytochemical testing and determination of antioxidant activity were carried out using the DPPH method (2,2-diphenyl-1-picrylhydrazyl), which was carried out quantitatively using a UV-Vis spectrophotometer. The results of the phytochemical screening of red seaweed ethanol extract contained alkaloids, flavonoids, saponins, steroids, and polyphenols and the IC50 value of red seaweed ethanol extract was 4.59 ppm, while the positive control for Vitamin C was 6.64 ppm. It was concluded that the ethanolic extract of red seaweed Galaxaura rugosa in the South Aceh District had high antioxidant potential, as evidenced by the small IC50 value of <50 µg/mL.Keywords: Antioxidants, Galauxara rugosa, phytochemicals, DPPH  ABSTRAKAktivitas antioksidan dari ekstrak etanol rumput laut merah Galaxaura rugosa Antioksidan merupakan senyawa yang mampu menunda, memperkecil, memperlambat atau menghambat reaksi oksidasi dari reaksi radikal bebas. Antioksidan menyumbangkan elektron kepada radikal bebas yang tidak stabil sehingga radikal bebas ini dapat dinetralkan agar tidak mengganggu jalannya proses metabolisme tubuh. Rumput laut merah Galaxaura rugosa berpotensi sebagai antioksidan. Penelitian ini bertujuan untuk menentukan aktivitas antioksidan ekstrak etanol rumput laut merah Galaxaura rugosa terhadap radikal bebas DPPH berdasarkan nilai IC50. Pada penelitian ini dilakukan pengujian fitokimia dan penentuan aktivitas antioksidan menggunakan metode DPPH (2,2-difenil-1-pikrilhidrazil) yang dilakukan secara kuantitatif menggunakan spektrofotometer UV-Vis. Hasil dari skrining fitokimia ekstrak etanol rumput laut merah mengandung senyawa alkaloid, flavonoid, saponin, steroid dan polifenol serta nilai IC50 ekstrak etanol rumput laut merah sebesar 4,59 ppm sedangkan kontrol positif Vitamin C sebesar 6,64 ppm. Ekstrak etanol rumput laut merah Galaxaura rugosa di Kabupaten Aceh Selatan memiliki potensi antioksidan yang tinggi. dibuktikan dengan nilai IC50 yang yang kecil yaitu < 50 µg/mL.Kata kunci: Antioksidan, Galauxara rugosa, Fitokimia, DPPH

scholarly journals Accelerated Solvent Extractions (ASE) of Mitragyna speciosa Korth. (Kratom) Leaves: Evaluation of Its Cytotoxicity and Antinociceptive Activity

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3704
Author(s):  
Yong Sean Goh ◽  
Thiruventhan Karunakaran ◽  
Vikneswaran Murugaiyah ◽  
Rameshkumar Santhanam ◽  
Mohamad Hafizi Abu Bakar ◽  
...  
Keyword(s):  
Leaf Extract ◽  
Antinociceptive Effect ◽  
Ethanolic Extract ◽  
Ethanol Extract ◽  
Total Phenolic ◽  
Leaf Extracts ◽  
Hek 293 ◽  
Mitragyna Speciosa ◽  
Botanical Extract ◽  
Ethanolic Leaf Extract

Mitragyna speciosa Korth (kratom) is known for its psychoactive and analgesic properties. Mitragynine is the primary constituent present in kratom leaves. This study highlights the utilisation of the green accelerated solvent extraction technique to produce a better, non-toxic and antinociceptive active botanical extract of kratom. ASE M. speciosa extract had a dry yield (0.53–2.91 g) and showed a constant mitragynine content (6.53–7.19%) when extracted with organic solvents of different polarities. It only requires a shorter extraction time (5 min) and a reduced amount of solvents (less than 100 mL). A substantial amount of total phenolic (407.83 ± 2.50 GAE mg/g and flavonoids (194.00 ± 5.00 QE mg/g) were found in ASE kratom ethanol extract. The MTT test indicated that the ASE kratom ethanolic leaf extract is non-cytotoxic towards HEK-293 and HeLa Chang liver cells. In mice, ASE kratom ethanolic extract (200 mg/kg) demonstrated a better antinociceptive effect compared to methanol and ethyl acetate leaf extracts. The presence of bioactive indole alkaloids and flavonols such as mitragynine, paynantheine, quercetin, and rutin in ASE kratom ethanolic leaf extract was detected using UHPLC-ESI-QTOF-MS/MS analysis supports its antinociceptive properties. ASE ethanolic leaf extract offers a better, safe, and cost-effective choice of test botanical extract for further preclinical studies.

UJI AKTIVITAS ANTIOKSIDAN FRAKSI N-HEKSAN DAUN AFRIKA (Vernonia amygdalina Del.) DENGAN METODE DPPH

2020 ◽  
Vol 5 (2) ◽  
pp. 250-257
Author(s):  
Nurul Fatimah ◽  
◽  
Reksi Sundu
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Activity ◽  
Free Radicals ◽  
Ethanolic Extract ◽  
Ethanol Extract ◽  
Hexane Fraction ◽  
Phytochemical Screening ◽  
Vernonia Amygdalina ◽  
Tropical Africa ◽  
Ic50 Value

Free radicals and reactive species are widely believed to contribute to the development of several diseases by causing oxidative stress and eventually oxidative. Vernonia amygdalina (Astereacea) is a small shrub or tree between 1 and 5m high growing throughout tropical Africa. Plants are generally known as bitter leaves is well cultivated and is a general market for merchandise in several countries. The purpose of this study was to determine the antioxidant activity of hexane fraction from ethanol extract od Frican leaves (Vernonia amygdalina Del.). The method used in this study was the DPPH (1,1-Diphenil-2-Picrylhydrazyl) method. The result of phytochemical screening showed that ethanolic extract of African leaves contained a composition of secondary metabolites of alkaloids, flavonoids, tannins, steroids/triterpenoids and saponins. The antioxidant activity of the extract of n-hexane fraction was classified as very weak with an IC50 value of 317.98 ppm.

In Vitro Antibacterial activity of ethanolic extract of Myrsine africana against laboratory Strains of Pathogenic Organisms

2016 ◽  
Vol 5 (04) ◽  
pp. 4512
Author(s):  
Jackie K. Obey ◽  
Anthoney Swamy T* ◽  
Lasiti Timothy ◽  
Makani Rachel
Keyword(s):  
Antibacterial Activity ◽  
Minimum Inhibitory Concentration ◽  
Inhibitory Concentration ◽  
Ethanolic Extract ◽  
Ethanol Extract ◽  
E Coli ◽  
Zones Of Inhibition ◽  
In Vitro Antibacterial Activity ◽  
Myrsine Africana

The determination of the antibacterial activity (zone of inhibition) and minimum inhibitory concentration of medicinal plants a crucial step in drug development. In this study, the antibacterial activity and minimum inhibitory concentration of the ethanol extract of Myrsine africana were determined for Escherichia coli, Bacillus cereus, Staphylococcus epidermidis and Streptococcus pneumoniae. The zones of inhibition (mm±S.E) of 500mg/ml of M. africana ethanol extract were 22.00± 0.00 for E. coli,20.33 ±0.33 for B. cereus,25.00± 0.00 for S. epidermidis and 18. 17±0.17 for S. pneumoniae. The minimum inhibitory concentration(MIC) is the minimum dose required to inhibit growth a microorganism. Upon further double dilution of the 500mg/ml of M. africana extract, MIC was obtained for each organism. The MIC for E. coli, B. cereus, S. epidermidis and S. pneumoniae were 7.81mg/ml, 7.81mg/ml, 15.63mg/ml and 15.63mg/ml respectively. Crude extracts are considered active when they inhibit microorganisms with zones of inhibition of 8mm and above. Therefore, this study has shown that the ethanol extract of M. africana can control the growth of the four organisms tested.

scholarly journals Ekstrak Etanol Kulit Buah Naga Menurunkan Indikasi Neoplasia Mammae Tikus Putih Berdasarkan Histopatologi dan Inhibitor Siklooksigenase-2

2018 ◽  
Vol 19 (1) ◽  
pp. 23
Author(s):  
Muhammad Thohawi Elziyad Purnama ◽  
Ragil Angga Prastiya ◽  
Faisal Fikri ◽  
Amung Logam Saputro ◽  
Bodhi Agustono
Keyword(s):  
Mammary Gland ◽  
Ethanolic Extract ◽  
Ethanol Extract ◽  
Growth Function ◽  
Histopathological Features ◽  
White Rats ◽  
Fruit Skin ◽  
Dragon Fruit ◽  
Cox 2 ◽  
Dermal Injection

Cancer caused uncontrolled cell proliferation and triggered by changes on cell information that regulate growth function. Each cell has different potential so many cancer prevalence such as endometrial cancer, lymph node cancer, lung cancer, skin and mammary gland cancer. The aims of this study were to assess the potential of dragon fruit skin ethanolic extract on white rats (Rattus norvegicus) exposed 7,12- Dimethylbenz(á)antrasena (DMBA) on mammary gland based on histopathological features and cyclooxygenase-2 (Cox-2) intensity. This study were used 20 of rats randomly divided into five group and each groups consisted of four rats, i.e: K+ weren’t treated DMBA and extract; K- were treated with DMBA; P1 were treated with DMBA and extract 10 mg/kg BW; P2 were treated with DMBA and extract 15 mg/kg BW; P3 were treated with DMBA and extract 20 mg/kg BW. The DMBA was given by intra dermal injection during twice a week for five weeks and the extracts with gastric tube everyday till 14 days. The data was analyzed by Anova test and continued with Duncan test. The result showed that the histopathological features were decrease significantly on P3. The variables of Cox-2 intensity were decrease significantly on P1, P2 and P3. Conclusion of this study was ethanol extract of dragon fruit skin can decrease neoplastic indication of mammary gland on white rats (R. norvegicus) based on histopathological features and Cox-2 inhibitors.

scholarly journals Median nerve stimulation induces analgesia via orexin-initiated endocannabinoid disinhibition in the periaqueductal gray

2018 ◽  
Vol 115 (45) ◽  
pp. E10720-E10729 ◽  
Author(s):  
Yi-Hung Chen ◽  
Hsin-Jung Lee ◽  
Ming Tatt Lee ◽  
Ya-Ting Wu ◽  
Yen-Hsien Lee ◽  
...  
Keyword(s):  
Pain Management ◽  
Median Nerve ◽  
Nerve Stimulation ◽  
Antinociceptive Effect ◽  
Low Frequency ◽  
Periaqueductal Gray ◽  
Orexin A ◽  
Median Nerve Stimulation ◽  
Opioid Receptor Antagonists ◽  
Nociceptive Responses

Adequate pain management remains an unmet medical need. We previously revealed an opioid-independent analgesic mechanism mediated by orexin 1 receptor (OX1R)-initiated 2-arachidonoylglycerol (2-AG) signaling in the ventrolateral periaqueductal gray (vlPAG). Here, we found that low-frequency median nerve stimulation (MNS) through acupuncture needles at the PC6 (Neiguan) acupoint (MNS-PC6) induced an antinociceptive effect that engaged this mechanism. In mice, MNS-PC6 reduced acute thermal nociceptive responses and neuropathy-induced mechanical allodynia, increased the number of c-Fos–immunoreactive hypothalamic orexin neurons, and led to higher orexin A and lower GABA levels in the vlPAG. Such responses were not seen in mice with PC6 needle insertion only or electrical stimulation of the lateral deltoid, a nonmedian nerve-innervated location. Directly stimulating the surgically exposed median nerve also increased vlPAG orexin A levels. MNS-PC6–induced antinociception (MNS-PC6-IA) was prevented by proximal block of the median nerve with lidocaine as well as by systemic or intravlPAG injection of an antagonist of OX1Rs or cannabinoid 1 receptors (CB1Rs) but not by opioid receptor antagonists. Systemic blockade of OX1Rs or CB1Rs also restored vlPAG GABA levels after MNS-PC6. A cannabinoid (2-AG)-dependent mechanism was also implicated by the observations that MNS-PC6-IA was prevented by intravlPAG inhibition of 2-AG synthesis and was attenuated inCnr1−/−mice. These findings suggest that PC6-targeting low-frequency MNS activates hypothalamic orexin neurons, releasing orexins to induce analgesia through a CB1R-dependent cascade mediated by OX1R-initiated 2-AG retrograde disinhibition in the vlPAG. The opioid-independent characteristic of MNS-PC6–induced analgesia may provide a strategy for pain management in opioid-tolerant patients.

scholarly journals Bioactivities of the ethanol extract from Ageratum fastigiatum branches: antioxidant, antinociceptive and anti-inflammatory

2016 ◽  
Vol 88 (3) ◽  
pp. 1471-1484
Author(s):  
GLAUCIEMAR DEL-VECHIO-VIEIRA ◽  
BRUNA C.S. SANTOS ◽  
MARIA SILVANA ALVES ◽  
AÍLSON L.A. ARAÚJO ◽  
CÉLIA H. YAMAMOTO ◽  
...  
Keyword(s):  
Antinociceptive Effect ◽  
Folk Medicine ◽  
Reducing Power ◽  
Ethanol Extract ◽  
Immersion Test ◽  
Significant Inhibition ◽  
Paw Edema ◽  
Hot Plate ◽  
Tail Immersion ◽  
Anti Inflammatory

ABSTRACT The present study was designed to investigate the antioxidant, antinociceptive and anti-inflammatory activities of the ethanol extract from Ageratum fastigiatum branches. Phytochemical screening and total phenol and flavonoid contents were determined. The antioxidant activity was assessed by 2,2-diphenyl-1-pycrilhydrazin (DPPH) and iron reducing power methods. The antinociceptive effect was evaluated using the acetic acid-induced writhing, formalin, hot plate and tail immersion assays; while the carrageenan-induced paw edema and pleurisy tests were performed to examine the anti-inflammatory activity against acute inflammation. The extract revealed the presence of flavonoids, tannins, coumarins, terpenes, sterols and saponins. Expressive levels of total phenols and flavonoids and a promising antioxidant effect were quantified. At the doses of 50, 100 and 200 mg/kg, the extract inhibited the writhing, reduced both phases of paw licking time and increased the reaction time on the hot plate. In the tail immersion test, the extract (50, 100 and 200 mg/kg) caused a significant inhibition of pain. In these doses, the paw edema, exudate volume and leucocyte mobilization were significantly reduced. These results suggest that A. fastigiatum can be an active source of substances with antioxidant, antinociceptive and anti-inflammatory activities, adding scientific support to the appropriate use in the Brazilian folk medicine.

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