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Reactive oxygen and nitrogen species (RONS) play a crucial role in the pathogenesis of various chronic diseases, including cancer, by reacting with fundamental biomolecules. While conventional anticancer treatments such as ionizing radiation and chemotherapy have significant adverse effects, some medicinal plants exhibit free radical scavenging and anticancer activities. Spilanthes acmella L., commonly known as the toothache plant, is reported to have various bioactive compounds with antioxidant and anticancer properties. The aim of this study was to investigate and evaluate antiproliferative potential of Spilanthes acmella ethanolic extract on human cervix adenocarcinoma (HeLa) and human myelogenous leukemia (K562) cancer cell lines. The stock solution of Spilanthes acmella extract was prepared in ethanol at concentration of 1 mg/mL and diluted with complete nutrient medium RPMI-1640. The medium was supplemented with 3 mM l-glutamine, 100 μg/mL streptomycin, 100 IU/mL penicillin, 10% heat-inactivated fetal bovine serum (FBS), and 25 mM Hepes, adjusted to pH 7.2. Cell survival was determined by the MTT assay 72 hours post-treatment. The IC50 values were calculated using a dose-response growth curve. The S. acmella ethanolic extract demonstrated significant cytotoxic (antiproliferative) effects on both HeLa and K562 cancer cell lines. The extract exhibited higher cytotoxicity towards K562 cells, with an IC50 value of 29.1 µg/mL, compared to HeLa cells, which had an IC50 value of 48.8 µg/mL. Spilanthes acmella extract possesses considerable potential as an anticancer agent and warrants further in vivo investigations to confirm its efficacy. [ABSTRACT FROM AUTHOR]

Natural deep eutectic solvent (NADES) is an alternative to conventional solvents in polyphenol extraction. Its composition of choline chloride combined with fructose, choline chloride with lactic acid, choline chloride with glycerol, choline chloride with propylene glycol, and choline chloride with proline have been sucessfully set using the thermal mixing method. Choline chloride served as the hydrogen bond acceptor (HBA), while the others acted as hydrogen bond donors (HBDs) at a mole ratio of 1:2. This study aimed to extract polyphenols from the flowers, stalks, stems, and leaves of Spilanthes acmella, using NADESs. The extraction process was conducted by adding 20% water to the mixture with a ratio of the sample to solvent of 1:10 (w/v), for 60 min. The extract concentration was assessed through spectroscopic photometry using the Folin-Ciocalteu method. The result showed that the choline chloride-glycerol NADES was the most appropriate solvent for the extraction of polyphenols from the flowers of the plant. Meanwhile, the best NADES for the extraction from the stems, stalks, and leaves, was the mixture of choline chloride and fructose. The highest polyphenol concentration was obtained in the stems at 2545.192 mg/L. The yield obtained in the stems, leaves, stalks, and flower were 25.452, 6.284, 3.111 and 2.415 mg gallic acid equivalent/g (GAE/g), respectively. These findings suggest that NADES can be used as an eco-friendly alternative solvent for green extraction processes of active compounds from natural materials, especially polyphenols from S. acmella. [ABSTRACT FROM AUTHOR]

Background Skin infections can range in severity from moderate to severe. However, skin infections can become more serious if they penetrate deeper into the skin or spread across a large portion of the body. Most skin infections are caused by specific bacteria, fungi, allergens, or other factors. Objective To examine the efficacy of an emulgel made from Spilanthes acmella extract as a herbal treatment for treating cellulitis and bacterial skin eruption. Methods From May to June 2021, this randomized controlled trial was carried out at a neighborhood clinic in Multan. Three patients in total took part in the study, and each one received an emulgel based on Spilanthes acmella that contained 2% pure extract. For a total of 14 days, each patient applied emulgel three times each day to the suffering area. Each patient had pictures taken on the 0th, 7th, and 14th days. Results All patients' skin infections had greatly improved after 14 days, as seen in the post-14-days figures. The eczematous conditions got better the skin softer, and every one of lesions and skin eruptions had cleared out. Conclusion It has been determined that the S extract base emulgel demonstrated strong antiinflammatory, anti-fungal, and anti-bacterial activity to treat many kinds of infectious and eczematous skin disorders. Due to the formulation's emollient effect, which lasted between 7 and 14 days, the skin became normal and smooth. [ABSTRACT FROM AUTHOR]

Background: Dermatitis is skin disorder that is complicated by recurrent infections of skin by bacteria, viruses, and fungi. Spilanthol is an active constituent of Spilanthes acmella, which possess strong anti-bacterial properties. The purpose of this study was to develop a herbal emulgel for the treatment of dermal bacterial infections, as microscopic organisms have created solid resistance against anti-microbials. Methods: Emulgels were prepared and characterized for parameters such as physical examination, rheological studies, spreading coefficient, bio-adhesive strength measurement, extrudability study, antibacterial activity, FTIR analysis, in vitro drug dissolution, and ex vivo permeation studies. Result: With a statistically significant p-value = 0.024, 100% antibacterial activity was observed by F4 against Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli (mean ± S.D) (25.33 ± 0.28, 27.33 ± 0.5, and 27 ± 0.5). However, maximum antibacterial effect 100% formulations produced zones of inhibitions against E. colip-value = 0.001. The mean zone of inhibition produced by F4 was greatest among all at 26.44 ± 0.37 mm (mean ± S.D). The F4 formulation produced a maximum percentage dissolution, permeation, and flux of 86.35 ± 0.576, 55.29 ± 0.127%, and 0.5532 ug/cm2/min, respectively. Conclusions: The present study therefore, suggests the use of S. acmella extract and olive oil containing emulgel for treating bacterial skin infections. [ABSTRACT FROM AUTHOR]

The author reflects on the potential use of Spilanthes acmella in enhancing the healing process following periodontal surgeries. Topics include its analgesic, antibacterial, and antifungal properties, its potential applications in periodontal care, and the development of natural formulations such as mouthwashes and mucoadhesive dressings to improve healing and minimize post-surgical complications.

Spilanthes acmella, which is commonly known as the toothache plant, has been used as ayurvedic medicine in dentistry for a long time. It is found to have anti-microbial, analgesic, and local anesthetic action. This medicinal plant has been studied for its local anesthetic applications in humans and animals. In this review paper, we have discussed the merits, limitations, safety, and potential future applications of using S. acmella as a local anesthetic drug. [ABSTRACT FROM AUTHOR]

• Spilanthes acmella is used in beauty care for accelerating the muscle relaxant and for repairing functional wrinkles. • It is the only report describing high-frequency shoot regeneration protocol. • The regenerated plants performed well under field conditions after hardening. • RAPD were used for the determination of genetic variability. • Chemotype with high spilanthol content (somoclone) was obtained from the current study. High frequency in vitro regeneration protocol was successfully developed in Spilanthes acmella (L.) Murr., a multipurpose medicinal herb synthesizing a diverse group of bioactive metabolites known as alkylamides. Optimum regeneration frequency (90.5%) with desirable multiple shoot buds was observed without intervening callus phase from nodal explants in Murashige and Skoog's (MS) medium supplemented with 0.5 mg l−1 each of BAP (6-benzylaminopurine) and IBA (indole-3-butyric acid). Organogenic callus was induced on MS medium containing 2, 4-D (2, 4-dichlorophenoxyacetic acid), Kn (Kinetin) and BAP (1.0 + 0.5 + 0.5 mg l−1), respectively from secondary axenic leaf explants. The survival rate of rooted plantlets transferred to sand: soil (1:1; v/v) after hardening procedures was 90%. Variation in spilanthol quantity among 42 regenerated plants was determined by high-performance liquid chromatography and one plant designated (SA -31) showed significantly higher accumulation of spilanthol (0.05%) as compared to the donor mother (0.02%) plant on dry weight (DW). Genetic fidelity between the regenerated plants and the mother plant was assessed by RAPD (random amplification of Polymorphic DNA) analysis. A comparative analysis revealed that leaves of regenerated plants through indirect organogenesis exhibited high antioxidant activities with total flavonoids (4.03 ± 0.49 mg/g), total phenolics (4.68± 0.49 mg/g) and α, α-diphenyl-β-picrylhydrazyl radical scavenging activity (IC 50 value of 166.21 ± 24.45) DW than the field grown plants. This study demonstrated an efficient, high frequency in vitro regeneration protocol that induced chemotypic variability for the development of high yielding clones for pharmaceutical purposes. [ABSTRACT FROM AUTHOR]

Background: Dermatitis is skin disorder that is complicated by recurrent infections of skin by bacteria, viruses, and fungi. Spilanthol is an active constituent of Spilanthes acmella, which possess strong anti-bacterial properties. The purpose of this study was to develop a herbal emulgel for the treatment of dermal bacterial infections, as microscopic organisms have created solid resistance against anti-microbials. Methods: Emulgels were prepared and characterized for parameters such as physical examination, rheological studies, spreading coefficient, bio-adhesive strength measurement, extrudability study, antibacterial activity, FTIR analysis, in vitro drug dissolution, and ex vivo permeation studies. Result: With a statistically significant p-value = 0.024, 100% antibacterial activity was observed by F4 against Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli (mean ± S.D) (25.33 ± 0.28, 27.33 ± 0.5, and 27 ± 0.5). However, maximum antibacterial effect 100% formulations produced zones of inhibitions against E. colip-value = 0.001. The mean zone of inhibition produced by F4 was greatest among all at 26.44 ± 0.37 mm (mean ± S.D). The F4 formulation produced a maximum percentage dissolution, permeation, and flux of 86.35 ± 0.576, 55.29 ± 0.127%, and 0.5532 ug/cm2/min, respectively. Conclusions: The present study therefore, suggests the use of S. acmella extract and olive oil containing emulgel for treating bacterial skin infections.

Objective: To determine whether SA3X (Spilanthes acmella) supplementation improves serum testosterone levels, in comparison with placebo, in participants with erectile dysfunction (ED) and low testosterone levels. Materials and methods: This double-blind placebo-controlled parallel-group was conducted in Hyderabad, India, among male participants who were randomized to SA3X therapy or placebo (1:1) for three months. The change of serum testosterone levels from baseline to months 1, 2, 3 and 6 (three months after completion of the intervention) were assessed using a mixed model repeated measures analysis. Additional secondary outcomes were the change in the Male Sexual Health Questionnaire (MSHQ), International Index of Erectile Function (IIEF) and the duration of penile erection. Stratifying the effect of SA3X on testosterone levels was done to account for potential confounders and effect modifiers. Safety was evaluated. Results: The intention-to-treat population included 215 patients (105 - SA3X therapy; 110 - placebo). SA3X intervention increased the testosterone levels significantly (21.85 vs. 1.89 ng/dL; P<0.001) at the end of month 3. The elevated testosterone levels were maintained at month 6 (18.69 vs. 1.79; P<0.001) even after discontinuation of the intervention. The MSHQ scores, IIEF scores, and duration of penile erection also increased significantly in the SA3X group. Sensitivity analysis showed that the effect of SA3X on testosterone significantly differed by BMI, presence of comorbid conditions and intake of phosphodiesterase-5 inhibitors. Dysgeusia (7.61%) was the significant drug-related adverse effect. Conclusion: Supplementation with SA3X for people with ED and low testosterone is a safe option as it significantly increases testosterone levels along with erectile function. [ABSTRACT FROM AUTHOR]

The use of natural products for the sedation and anesthesia of fish is already well established, with characteristics similar to or potentially superior to synthetic anesthetics. There is a significant advantage in terms of commercial accessibility compared to synthetic drugs, without compromising effectiveness and safety. Var. Oleracea , commonly known as jambu, is considered a medicinal plant. It contains spilanthol , an olefinic N-alkyl-amide with an isobutyl side chain. The supercritical oil of Spilanthes acmella (SOSA) exhibits anesthetic and sedative activity in fish. Our study aimed to evaluate the behavior and cardiac activity (ECG) of SOSA in seven groups: control, control vehicle, 20, 30, 40, 50 and 60 μL.L−1 in tambaqui (Colossoma macropomum). The animals were divided into two experiments: Experiment 1 (Behavioral), in which the latency for the loss and recovery of the animals' posture reflex in contact with the concentrations was evaluated. Experiment 2 (ECG), in which morphographic changes in the ECG were identified during treatment with various concentrations of SOSA. We conclude that concentrations of 20 μL.L−1 to 40 μL.L−1of SOSA were the most suitable for anesthesia due to the rapid reversibility of effects and minimal changes in the hemodynamics of C. macropomum in short-duration anesthesia. • This study assessed spilanthol's impact on C. macropomum heart activity during anesthesia using electrophysiology. • During anesthetic induction, the heart rate decreased, but the rhythm was sinus. • The cardiac effects of all doses of spilantol were reversible. • The safe therapeutic window is between doses of 20 to 40 μL.L −1. [ABSTRACT FROM AUTHOR]

Introduction: Spilanthol, an active metabolite of the herb Spilanthes acmella, has many biological and pharmacological effects with limited studies on humans. Objectives: To determine the extent of increase/decrease in muscle mass and sexual frequency over a period of 3 weeks and 2 months in participants consuming SA3X capsules (containing 500 mg of Spilanthes acmella extract, standardized to 3.5% spilanthol delivering 17.5 mg spilanthol). Materials and Methods: The study is longitudinal in nature and is conducted among 240 male participants consuming SA3X capsules at three points – first at recruitment, second at the end of 3 weeks, and lastly at the end of 2 months in Hyderabad and Secunderabad who were assessed for muscle gain by measuring mid upper-arm circumference (MUAC), chest circumference (CC), thigh circumference (TC), and for sexual activity by a change in frequency of sexual activity and duration of penile erection. The nutrient intake was assessed by 24-h dietary recall method at each visit along with the daily activity. Results: A significant increase in the MUAC, (P = 0.050), frequency of sexual intercourse (P = 0.028), and duration of penile erection (P = 0.032) were observed at the end of 3 weeks; however, no changes were observed in CC and TC. At the end of 2 months, a significant increase in the parameters MUAC (P = 0.031), frequency of sexual intercourse (P < 0.001), duration of penile erection (P = 0.029) along with significant increase in CC; (P = 0.048) and TC; (P = 0.036) was observed. Conclusion: The study reflects the herb Spilanthes acmella to be a potent muscle gainer and aphrodisiac. However, further studies on humans need to be carried out to establish the temporality of the association of spilanthol with its claimed benefits.

Spilanthes acmella Murr., popularised as toothache plant, is a well-known culinary and medicinal plant for different purposes, but its use as an anthelmintic is apparently exclusive to the Mizo people of India and Myanmar. A chloroform extract of Spilanthes acmella Murr. was analysed in a single quadrupole GC-MS system, from which it was found that the major compound was an alkylamide, N-isobutyl-(2E,4Z,8Z,10E)-dodecatetraenamide. A comparative study was performed on the anthelmintic activity of the plant extract and praziquantel (PZQ) against an intestinal cestode, Raillietina echinobothrida. In terms of efficacy, PZQ was more potent, but the plant extract was also effective at all concentrations tested. PZQ caused severe shrinkage and folds of the tegument, constriction of the suckers, dislocation of spines and erosion of microtriches. The plant extract caused shrinkage and folds on the main body but not on the scolex. Damage on the suckers is more pronounced than in PZQ-treated cestodes. The spines were completely removed. The current findings indicate that S. acmella is a good source of compounds with anthelmintic activity.

Background and Aim: Spilanthes acmella is used for the treatment of intestinal helminth infections in Mizo traditional medicine. In spite of a variety of drugs developed for helminthiases, an entirely safe and absolutely effective drug is still lacking, so much so that infections remain a major problem in human and animal welfare. In this study, we attempted to substantiate S. acmella as an anticestodal agent. Materials and Methods: The aqueous extract of the aerial parts of S. acmella was prepared and from it a bioactive fraction was obtained using column chromatography. Chemical analyses were done using thin-layer chromatography (TLC) and gas chromatography–mass spectrometry (GC–MS). Helminth survival test was performed in vitro on an intestinal cestode, Raillietina tetragona. Structural effects on the cestode were examined under scanning electron microscopy. Results: From the bioactive fraction of S. acmella extract, TLC indicated the presence of an aromatic quinone, which was identified using GC–MS as a quinoline derivative (2,2,4-trimethyl-1,2-dihydroquinoline having a retention time of 24.97 min and chemical formula of C12H15N). The quinoline-rich fraction showed concentration-dependent activity against R. tetragona as that of albendazole. Scanning electron microscopy of the treated cestode revealed classic anthelmintic effects such as tegumental shrinkage and damage of surface organs. The scolex was shrunk, suckers were degenerated with disintegrated spines, and rostellum was completely collapsed. There were severe damages on the tegument and formation of pit-like scars on the proglottids. Conclusion: The efficacy of S. acmella extract and structural damages it caused on the cestode indicates that it is a potential source of anthelmintic agent and that 2,2,4-trimethyl-1,2-dihydroquinoline contributes to its antiparasitic activity.

Blainvillea acmella (L.) Philipson [Asteraceae] (B. acmella) is an important medicinal plant native to Brazil, and it is widely known as a toothache plant. A plethora of studies have demonstrated the antioxidant activities of B. acmella and few studies on the stimulatory effects on alkaline phosphatase (ALP) secretion from bone cells; however, there is no study on its antioxidant and anabolic activity on bone cells. The study aimed to evaluate the phytochemical contents of aqueous and ethanol extracts of B. acmella using gas chromatography mass spectrometry (GCMS) and liquid chromatography time of flight mass spectrometry (LCTOFMS) along with the total phenolic (TPC) and flavonoid (TFC) contents using Folin-Ciocalteu and aluminum colorimetric methods. The extracts of B. acmella leaves were used to scavenge synthetic-free radicals such as 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2′-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), and ferric reducing antioxidant power (FRAP) assays. The bone anabolic effects of B. acmella extracts on MC3T3-E1 cells were measured with 3-(4,5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazoium bromide (MTT) at 1, 3, 5, and 7 days, Sirius-red and ALP at 7 and 14 days, and Alizarin Red S at 14 and 21 days. Comparatively, ethanol extract of B. acmella (BaE) contributed higher antioxidant activities (IC50 of 476.71 µg/ml and 56.01 ± 6.46 mg L-ascorbic acid/g against DPPH and FRAP, respectively). Anabolic activities in bone proliferation, differentiation, and mineralization were also higher in B. acmella of ethanol (BaE) than aqueous (BaA) extracts. Positive correlations were observed between phenolic content (TPC and TFC) to antioxidant (ABTS and FRAP) and anabolic activities. Conversely, negative correlations were present between phenolic content to antioxidant (DPPH) activity. These potential antioxidant and bone anabolic activities in BaE might be due to the phytochemicals confirmed through GCMS and LCTOFMS, revealed that terpenoids of α-cubebene, cryophyllene, cryophyllene oxide, phytol and flavonoids of pinostrobin and apigenin were the compounds contributing to both antioxidant and anabolic effects in BaE. Thus, B. acmella may be a valuable antioxidant and anti-osteoporosis agent. Further study is needed to isolate, characterize and elucidate the underlying mechanisms responsible for the antioxidant and bone anabolic effects.

Blainvillea acmella (L.) Philipson [Asteraceae] (B. acmella) is an important medicinal plant native to Brazil, and it is widely known as a toothache plant. A plethora of studies have demonstrated the antioxidant activities of B. acmella and few studies on the stimulatory effects on alkaline phosphatase (ALP) secretion from bone cells; however, there is no study on its antioxidant and anabolic activity on bone cells. The study aimed to evaluate the phytochemical contents of aqueous and ethanol extracts of B. acmella using gas chromatography mass spectrometry (GCMS) and liquid chromatography time of flight mass spectrometry (LCTOFMS) along with the total phenolic (TPC) and flavonoid (TFC) contents using Folin-Ciocalteu and aluminum colorimetric methods. The extracts of B. acmella leaves were used to scavenge synthetic-free radicals such as 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2′-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), and ferric reducing antioxidant power (FRAP) assays. The bone anabolic effects of B. acmella extracts on MC3T3-E1 cells were measured with 3-(4,5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazoium bromide (MTT) at 1, 3, 5, and 7 days, Sirius-red and ALP at 7 and 14 days, and Alizarin Red S at 14 and 21 days. Comparatively, ethanol extract of B. acmella (Ba E) contributed higher antioxidant activities (IC50 of 476.71 µg/ml and 56.01 ± 6.46 mg L-ascorbic acid/g against DPPH and FRAP, respectively). Anabolic activities in bone proliferation, differentiation, and mineralization were also higher in B. acmella of ethanol (Ba E) than aqueous (Ba A) extracts. Positive correlations were observed between phenolic content (TPC and TFC) to antioxidant (ABTS and FRAP) and anabolic activities. Conversely, negative correlations were present between phenolic content to antioxidant (DPPH) activity. These potential antioxidant and bone anabolic activities in Ba E might be due to the phytochemicals confirmed through GCMS and LCTOFMS, revealed that terpenoids of α-cubebene, cryophyllene, cryophyllene oxide, phytol and flavonoids of pinostrobin and apigenin were the compounds contributing to both antioxidant and anabolic effects in Ba E. Thus, B. acmella may be a valuable antioxidant and anti-osteoporosis agent. Further study is needed to isolate, characterize and elucidate the underlying mechanisms responsible for the antioxidant and bone anabolic effects. [ABSTRACT FROM AUTHOR]

SSTIs (Skin and soft tissue infections) are the most commonly occurring infections among all age groups. This study aimed to create an herbal emulgel for the treatment of bacterial skin infections as many bacteria have developed strong resistance against antibiotics. Spilanthe acmella plant extract contains spilanthol which has strong antibacterial properties. Methanolic S. acmella extract-based emulgels being promising drug delivery systems have been evaluated for various parameters like physical characteristics, viscosity, pH, spreading coefficient, Bioadhesive strength determination, Extrudability, antioxidant and antibacterial activity. 200µg/100µl exhibited the highest antioxidative activity 60.01±0.28% radical scavenging activity. MIC values of pure extract found in the range of 0.83±0.21 to 1.66±0.41µg/100µl, MBC values found in the range of 1.66±0.41 to 3.33±0.83µg/100µl for all strains of bacteria. Statistically significant antibacterial activity of all extract containing emulgels was observed against S. aureus, P. aeruginosa, E. Coli p-value = 0.00, while maximum antibacterial effect all formulations have produaced zone of inhibitions against E. Coli p-value = 0.00. The current study thus suggests the use of S. acmella extract-based emulgel for the treatment of bacterial skin infections caused by S. aureus, P. aeruginosa and E. coli. [ABSTRACT FROM AUTHOR]

Introduction: Spilanthol, an active metabolite of the herb Spilanthes acmella, has many biological and pharmacological effects with limited studies on humans. Objectives: To determine the extent of increase/decrease in muscle mass and sexual frequency over a period of 3 weeks and 2 months in participants consuming SA3X capsules (containing 500 mg of Spilanthes acmella extract, standardized to 3.5% spilanthol delivering 17.5 mg spilanthol). Materials and Methods: The study is longitudinal in nature and is conducted among 240 male participants consuming SA3X capsules at three points – first at recruitment, second at the end of 3 weeks, and lastly at the end of 2 months in Hyderabad and Secunderabad who were assessed for muscle gain by measuring mid upper-arm circumference (MUAC), chest circumference (CC), thigh circumference (TC), and for sexual activity by a change in frequency of sexual activity and duration of penile erection. The nutrient intake was assessed by 24-h dietary recall method at each visit along with the daily activity. Results: A significant increase in the MUAC, (P = 0.050), frequency of sexual intercourse (P = 0.028), and duration of penile erection (P = 0.032) were observed at the end of 3 weeks; however, no changes were observed in CC and TC. At the end of 2 months, a significant increase in the parameters MUAC (P = 0.031), frequency of sexual intercourse (P < 0.001), duration of penile erection (P = 0.029) along with significant increase in CC; (P = 0.048) and TC; (P = 0.036) was observed. Conclusion: The study reflects the herb Spilanthes acmella to be a potent muscle gainer and aphrodisiac. However, further studies on humans need to be carried out to establish the temporality of the association of spilanthol with its claimed benefits. [ABSTRACT FROM AUTHOR]

The buzz button is an edible flower that induces a tingling, electric sensation in the mouth and alters the perception of different flavors. The buzz button's taste-altering effect is thought to be caused by the bioactive compound spilanthol. The present article details a laboratory exercise that explores taste perception principles using the buzz button in an undergraduate Sensation and Perception course. A detailed step-by-step guide for the laboratory exercise is included along with analyzed student results. Students first sampled various food items that spanned the different taste sensations (i.e., salty, sweet, sour and bitter) and then rated their perceived taste intensity on a scale from one (not intense) to ten (very intense). Next, students consumed a buzz button and resampled each food item as well as re-rated their perceived taste intensities. It was found that students' perceived taste intensities for sour items and sweet items were decreased after consuming the buzz buttons. Additionally, students also completed a post-activity survey in which they indicated that this was an interesting and enjoyable exercise. This highlights the value of this particular hands-on demonstration in teaching about the connection between taste and tactile perception., (Copyright © 2024 Faculty for Undergraduate Neuroscience.)

Background: Topical anesthetics have an intrinsic part to reduce pricking pain sensation due to needle stick before injection in children.Aim: The present study aimed to determine the effectiveness of a novel herbal anesthetic gel used as a topical anesthetic before an inferior alveolar nerve block.Settingsanddesign: This was a bilateral split-mouth, single blind, crossoverin vivo study.Methods: Atotal number of 30 children were selected for this study design. After the application of the topical anesthesia, a 26-gauge needle was inserted in the mucobuccal fold and local anesthetic solution was deposited. Assessment of pain perception was done before the procedure and at the time of needle penetration using hemodynamic parameters such as blood pressure and heart rate. The objective and subjective pain assessment was recoded through sound eye motor scale and Faces Pain Scale-Revised (FPS-R).Statisticalanalysis: As the data followed a normal distribution, parametric tests were used to analyze these data. The independent sample t-test and paired sample t-test were used to check the mean differences.Results: The data showed no statistically significant differences in the objective and subjective pain assessment values of the novel herbal anesthetic gel compared to the 2% lignocaine gel. However, the intragroup comparisons of the before and during treatment results showed statistically significant results (P < 0.05).Conclusion: The novel herbal anesthetic gel was effective and safe in reducing the pain from needle insertion. Thus, setting up scientific evidence for the therapeutic usage of herbal products can, therefore, assist to develop a more efficient and alternative topical anesthetic. [ABSTRACT FROM AUTHOR]

Purpose: To determine anti-breast cancer activities of Spilanthes acmella (S. acmella) extract. Methods: S. acmella was macerated with 95% ethanol. Phenolic, flavonoid content and antioxidant activity of the extract were assessed using Folin Ciocalteu method, aluminum chloride (AlCl3) colorimetric method and 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay, respectively. Cytotoxicity, colony formation and cell migration suppression on MCF-7 cells, representing anti-breast cancer effects, were also evaluated by sulforhodamine B (SRB), clonogenic and wound healing assays, respectively. Creams containing the extract were formulated and then characterized in terms of their physical appearance, viscosity and pH, before and after stability testing. Results: The crude extract contained phenolic content of 62.8 ± 5.2 mg gallic acid equivalent/g and flavonoid content of 375.6 ± 20.1 mg rutin equivalent/g. The results showed that the extract exhibits antioxidant effect with half-maximal inhibitory concentration (IC50) of 1.2 ± 0.1 mg/mL. It showed cytotoxicity on MCF-7 cells with IC50 of 37.1 ± 1.1 μg/mL in 48 h and inhibited colony formation of cells with IC50 of 44.9 ± 1.3 μM. In addition, it demonstrated an anti-migration effect at a concentration of 50 μg/mL. The developed creams displayed good physical appearance and maintained stable physical properties overt a two-month period. Conclusion: S. acmella extract exhibits potential anti-breast cancer activity. The cream containing the extract is promising for the topical treatment of breast cancer. [ABSTRACT FROM AUTHOR]

In our continuing research for bioactive constituents from natural resources, a new methyl threonolactone glucopyranoside (1), a new methyl threonolactone fructofuranoside (2), 2 new pyroglutamates (3 and 4), and 10 known compounds (5–14) were isolated from the whole plant of Spilanthes acmella (L.) L. The structures of these compounds were determined based on various spectroscopic and chemical analyses. All of the isolated compounds were evaluated on bone formation parameters, such as ALP (alkaline phosphatase) and mineralization stimulatory activities of MC3T3-E1 cell lines. The results showed that the new compound, 1,3-butanediol 3-pyroglutamate (4), 2-deoxy-d-ribono-1,4-lactone (6), methyl pyroglutamate (7), ampelopsisionoside (10), icariside B1 (11), and benzyl α-l-arabinopyranosyl-(1→6)-β-d-glucopyranoside (12) stimulated both ALP and mineralization activities.

Hepatotoxicity is appreciably escalating health dilemma worldwide and the degree of the problem has encouraged importance in the exploration for hepatotherapeutic agents from plants. In the current research work, the hepatoprotective/hepatocurative activity of methanolic extract of Spilanthes acmella Murr aerial parts in paracetamol induced hepatotoxicity was investigated in rabbits by the analysis of different liver enzymes including ALT, AST, ALP along with histopathological investigations. In first phase of the study, paracetamol toxicated rabbits were treated with extract and standard drug jatepar TM. The hepatotoxicant (paracetamol) significantly increased the levels of aspartate transaminase, alanine transaminase, alkaline phosphatase compared to normal control. Spilanthes acmella Murr at (400 mg/kg) reversed the elevation in the level of ALP, AST and ALT caused by the hepatotoxicants and jeteparR TM (standard) also reversed the deleterious effects of the hepatotoxicants. In second phase of this study, extract of Spilanthes acmella Murr was given to rabbits for ten days then paracetamol was administered in one group and level of liver parameters was paralleled with regular control group and the group that was receiving the extract. It is concluded that methanolic extract of Spilanthes acmella Murr aerial parts possesses hepatocurative and hepatoprotective activity. [ABSTRACT FROM AUTHOR]

Background: Repeated endodontic failures are due to pathogens like Enterococcus faecalis and Candida albicans which are resistant to the common intracanal medicaments like calcium hydroxide (Ca[OH] 2 ). Aims: To determine the role of commonly used folk medicine, Spilanthes acmella (SPA) against root canal pathogens like E. faecalis, C. albicans, Staphylococcus aureus, Streptococcus sp, and to compare its efficacy with Ca(OH) 2 , a popularly used intracanal medicament. Materials and Methods: Bacterial strains of S. aureus, Streptococcus sp., E. faecalis, and fungal strains of C.albicans were tested against different concentrations of SPA and Ca(OH) 2 . Seven days old cultures of test organisms were seeded onto agar plates and uniformly spread with a spreader. Five to six wells (8 mm) were made on agar plate to which different concentrations of the test solutions were added. The inoculated plates were kept in an incubator at 37°C for 48 h and inhibition zones were measured. Statistical Analysis: Results of SPA were compared with results of Ca(OH) 2 statistically using Mann-Whitney U test. Results: A significant zone of inhibition was obtained with SPA and was found to increase as the concentration increased for C. albicans. SPA showed a significant zone of inhibition at 2-5% and 10% whereas Ca(OH) 2 showed a zone of inhibition only at 10% for E. faecalis. SPA showed a zone of inhibition only at 10%, whereas, Ca(OH) 2 showed a significant zone of inhibition at 5% and 10% for S. aureus and Streptococcus sp., respectively. Conclusion: SPA possesses remarkable antibacterial and antifungal activity against common root canal pathogens which are responsible for repeated endodontic failures such as E. faecalis and C. albicans when compared with medicaments like Ca(OH) 2 .

Spilanthol presents anesthetic, antiseptic and anti-inflammatory capacities, as well as anti-microbial and insecticidal activities. In this work, the supercritical carbon dioxide (scCO 2 ) extraction kinetics of spilanthol from jambu flowers was studied by changing the solvent density (700–900 kg m −3 ) at different temperatures (323–343 K). Spilanthol was isolated from the obtained extracts by TLC and identified/quantified by GC-FID/MS. The highest global extraction yield (∼9%) was obtained at 900 kg m −3 and 343 K, while the highest spilanthol yield and selectivity (2.6% and 34.6%, respectively) were obtained at 800 kg m −3 and 343 K. Indirect values for the solubility of spilanthol in scCO 2 were estimated from the spilanthol extraction kinetic curves and ranged between (0.7–2.6) × 10 −3 g spilanthol /L CO2(PTN) . The high selectivity of the extraction process for spilanthol achieved in the present work indicates potential advantages of using scCO 2 to obtain spilanthol from S. acmella . [ABSTRACT FROM AUTHOR]

Spilanthes acmella (Asteraceae) is an endangered ornamental cum medicinal annual herb. This study reports on the effect of two arbuscular mycorrhizal fungi (Glomus mosseae and Acaulospora laevis) applied either alone or in combination on post-transplanting performance of micropropagated S. acmella. Complete plantlets of S. acmella were raised by direct organogenesis from nodal explants on Murashige and Skoog medium supplemented with various cytokinins. S. acmella plantlets responded to all three mycorrhizal treatments in a significantly different way. G. mosseae enhanced the survival rate of S. acmella plantlets to 100%. Plant height, plant spread, number of branches per plant, number of leaves per plant, leaf area, biomass production, and chlorophyll content were significantly higher in AM inoculated plantlets as compared to the uninoculated ones. This clearly demonstrates that AM inoculation improved not only the survival rate of micropropagated plantlets but also their growth and biomass yield.

In this study, the various concentrations of casein hydrolysate (25, 50, 75, 100 mg/L) and L-phenylalanine (50, 100, 150, 200 µM/l) were incorporated in MS containing 15 µM BA plus 5 µM 2,4-D for enhancement of secondary metabolites in cell culture of Spilanthes acmella. The presence of casein hydrolysate in the nutrient medium improved the growth of cell biomass and the production of scopoletin. The addition of casein hydrolysate up to 75 mg/L stimulated the accumulation of scopoletin, but increasing excess 75 mg/L the level of casein hydrolysate reduced the production of scopoletin. The addition of L-phenylalanine in the nutrient medium was found to be more effective for production of secondary metabolite in S. acmella. The addition of 50 µM/L of L-phenylalanine in the medium increased scopoletin content to 27.12 ± 0.58 µg/g dry weight, compared to the scopoletin content of control at 7.89 ± 0.61 µg/g dry weight. The highest accumulation of scopoletin was observed in the 100 µM/L L-phenylalanine in cell suspension, which was 4.51 times more than the control. As a result, using moderate concentration of L-phenylalanine was ideal for the production of scopoletin. In general, casein hydrolysate was more effective than L-phenylalanine for production of scopoletin and growth of cell biomass in the cell culture of S. acmella.

The aim of this study was to evaluate the anaesthetic activities of the extractives of Nectandra grandiflora and Spilanthes acmella in juvenile tambaqui fish, Colossoma macropomum as well as to investigate their effects on oxidative stress status of fish submitted to transport in hyperoxia. Fish were placed in aquaria containing five different concentrations of essential oil (EO) of N. grandiflora (25; 50; 100; 200; and 300 μL L − 1 ) or waxy extract of S. acmella (5; 10; 15; 20; and 25 mg L − 1 ), and the times of anaesthetic induction and recovery were determined by concentration-response trials. Fish transported inside plastic bags in hyperoxic conditions for 2, 6 and 10 h with or without anaesthetics were investigated for the occurrence of oxidative stress through the assessment of total antioxidant capacity against peroxyl radicals (ACAP), glutathione S-transferase (GST) activity and lipid peroxidation levels (TBARS) in muscle, gills, liver and brain. Both extractives of S. acmella and N. grandiflora induced deep anaesthesia in juvenile C. macropomum . Although transient changes occurred in ACAP and GST activity after transport, irrespective of transport time or anaesthetic used, antioxidant components in these extractives reduced or maintained lipid peroxidation within basal levels in the assessed organs. The use of 10 mg L − 1 of extract of S. acmella was suitable to induce fast anaesthesia (< 3 min) and safe recovery (< 5 min). Sedation concentrations at 1 mg L − 1 and 30 μL L − 1 of the extractives of S. acmella and N. grandiflora respectively, enhanced protection against oxidative damage mainly in muscle and gills of juvenile tambaqui and therefore have the potential to be used as chemoprotectants for transport purposes. Statement of relevance This study presents novel products to be used as anaesthetics/sedatives for fish. [ABSTRACT FROM AUTHOR]

Background: Repeated endodontic failures are due to pathogens like Enterococcus faecalis and Candida albicans which are resistant to the common intracanal medicaments like calcium hydroxide (Ca[OH]2).Aims: To determine the role of commonly used folk medicine, Spilanthes acmella (SPA) against root canal pathogens like E. faecalis, C. albicans, Staphylococcus aureus, Streptococcus sp, and to compare its efficacy with Ca(OH)2, a popularly used intracanal medicament.Materials and Methods: Bacterial strains of S. aureus, Streptococcus sp., E. faecalis, and fungal strains of C. albicans were tested against different concentrations of SPA and Ca(OH)2. Seven days old cultures of test organisms were seeded onto agar plates and uniformly spread with a spreader. Five to six wells (8 mm) were made on agar plate to which different concentrations of the test solutions were added. The inoculated plates were kept in an incubator at 37°C for 48 h and inhibition zones were measured.Statistical Analysis: Results of SPA were compared with results of Ca(OH)2 statistically using Mann-Whitney U test.Results: A significant zone of inhibition was obtained with SPA and was found to increase as the concentration increased for C. albicans. SPA showed a significant zone of inhibition at 2-5% and 10% whereas Ca(OH)2 showed a zone of inhibition only at 10% for E. faecalis. SPA showed a zone of inhibition only at 10%, whereas, Ca(OH)2 showed a significant zone of inhibition at 5% and 10% for S. aureus and Streptococcus sp., respectively.Conclusion: SPA possesses remarkable antibacterial and antifungal activity against common root canal pathogens which are responsible for repeated endodontic failures such as E. faecalis and C. albicans when compared with medicaments like Ca(OH)2. [ABSTRACT FROM AUTHOR]

In vitromass production and conservation of three antimalarial medicinal herbs:Spilanthes acmellaL. var.oleraceae,S. calva, andS. paniculata of asteraceaeemploying seedling leaf explants. The explants were reared on MS medium containing a variety of growth regulators, namely cytokinins (BA, KN and 2iP), or auxins (2,4-D, NAA and IBA) in different concentrations (0.1, 1, 5, 10, and 20 μM) either alone or in combination. MS+5μM BA proved optimum for S. calva, with an average of 4.17 ± 1.5 shoots. However, inS. acmella L. var. oleraceaeandS. paniculata, MS+1μM NAA+5μM BA proved best for differentiating an average of 4.46 ± 1.2 and 6.50 ± 2.6 shoots, respectively. The shoots were excised and rooted in half-strength MS basal medium supplemented with auxins (NAA or IBA). Thus, a successful method for ex-situ conservation has been established in the three Spilanthes species for the first time. [ABSTRACT FROM PUBLISHER]

Numerous natural products have pharmacological activity such that many biologically active compounds have led to the development of cancer chemotherapy drugs. Spilanthes acmella (Asteraceae) is widely cultivated in the State of Pará, Brazil, being employed in folk medicine for its anti-inflammatory, antimicrobial, antioxidant, analgesic, insecticide, and larvicidal properties. However, its cytotoxicity and influence on actin cytoskeleton organisation in tumour cell lines are practically nonexistent. We have verified the cytotoxicity of a hydroethanolic extract of the inflorescence of S. acmella, and examined its effects on the cytoskeleton of tumour cells. Decreasing concentrations of the extract (250, 500 and 1,000 µg/mL) were given to cultures of neoplastic cells (HEp-2). Cytotoxicity was assessed by the MTT test, and the influence on cytoskeleton organisation was examined by fluorescence microscopy. The IC50 of the hydroethanolic extract was 513 µg/mL, confirming the data obtained from the MTT assay that gave high cytotoxicity. The actin cytoskeleton arrangement of HEp2 cells at 500 and 1,000 µg/mL showed depolymerisation of the filaments, causing loss of morphology and consequently compromising cell adhesion. [ABSTRACT FROM AUTHOR]

Abstract: Ethnopharmacological relevance: Plants are often used for skin diseases in different ethnopharmacological systems. Local and systemic effects of topically applied compounds can be significantly increased by plant constituents having skin penetration enhancers. Materials and methods: In this study, we examined the proposed penetration enhancing properties of spilanthol, an N-alkylamide abundantly present in several Asteraceae plants like Spilanthes acmella L., on three model drugs (caffeine, testosterone and ibuprofen). Moreover, as plants are frequently contaminated with toxic environmental substances, the mutual influence on the transdermal behavior between spilanthol and six model mycotoxins (aflatoxin B1, ochratoxin A, fumonisin B1, citrinin, zearalenone, T-2 toxin) was investigated. Results: Spilanthol exhibits component and concentration dependent penetration enhancing effects. No significant penetration enhancing effect for ibuprofen has been observed, but with increasing spilanthol concentration (from 0 up to 1w/V%), the permeability of caffeine increased, resulting in an enhancing ratio (ER) of 4.60. For testosterone, a maximal penetration enhancing concentration of 0.5% spilanthol was found (ER=4.13). Next to its beneficial applicability to increase local as well as systemic pharmacological effects of dermally co-administrated drug, this N-alkylamide negatively influences human health risk if spilanthol containing formulations are polluted with mycotoxins: the presence of spilanthol (0.3w/V%) induced a significant increase of permeability coefficient K p of five investigated mycotoxins, with ER values ranging between 1.57 and 6.37. On the other hand, mycotoxins themselves do not significantly influence the transdermal behavior of spilanthol. Conclusions: The existence of a significant mutual influence of compounds towards skin penetration should always be considered during the development or as part of the functional quality evaluation of topical products. [Copyright &y& Elsevier]

Spilanthes acmella (Asteraceae) is an endangered ornamental cum medicinal annual herb. This study reports on the effect of two arbuscular mycorrhizal fungi (Glomus mosseae and Acaulospora laevis) applied either alone or in combination on post-transplanting performance of micropropagated S. acmella. Complete plantlets of S. acmella were raised by direct organogenesis from nodal explants on Murashige and Skoog medium supplemented with various cytokinins. S. acmella plantlets responded to all three mycorrhizal treatments in a significantly different way. G. mosseae enhanced the survival rate of S. acmella plantlets to 100%. Plant height, plant spread, number of branches per plant, number of leaves per plant, leaf area, biomass production, and chlorophyll content were significantly higher in AM inoculated plantlets as compared to the uninoculated ones. This clearly demonstrates that AM inoculation not only improved the survival rate of micropropagated plantlets but also their growth and biomass yield. [ABSTRACT FROM AUTHOR]

Excised nodal explants of Spilanthes acmella (L.) Murr., 'Toothache Plant' proliferate rapidly in vitro on MS medium containing 0.5- 2.0 mg/l of BAP. Rapid and prolific shoot proliferation occurred. Regenerated shoots vary considerably in size (3-10 cm long) and relative stage of development, with some (50%) producing adventitious roots without transferal to a separate rooting medium. With maximum possibility of adventitious roots induction was induced from middle order nodes (3rd to 5th node from apex) obtained from 3 months old in vivo plant on full-strength MS medium supplemented with 1.0 mg/l BAP under the photoperiod of 18-h. The possibility of adventitious roots induction directly from regenerated shoot was greatly influenced by the concentration of BAP, photoperiod, age of donor plant and nodal position on stem. [ABSTRACT FROM AUTHOR]

Abstract: According to Indian Systems of Medicine, Spilanthes acmella (L.) Murr. (Family – Asteraceae), is considered effective in the treatment of sexual deficiencies especially due to ageing. In the present study, characterization of ethanolic extracts of the Spilanthes acmella flower and its effect on general mating pattern, penile erection and serum hormone levels of normal male Wistar albino rats were investigated and compared with sildenafil citrate. In vitro nitric oxide release was also investigated in human corpus cavernosum cell line. As N-alkylamides are a promising group, their profiling was performed using a gradient reversed phase high performance liquid chromatography/electrospray ionization ion trap mass spectrometry (HPLC/ESI-MS) method on an embedded polar column. MS1 and MS2 fragmentation data were used for identification purposes. For assessment of sexual behavior, animals were divided into five groups of eight male rats. The extracts (50, 100 and 150mg/kgbodyweight/day) and sildenafil citrate (5mg/kgbodyweight/day) (positive control) were administered orally for 28 days. The behavioral and sexual parameters were observed at days 0, 15, 28 and after a lapse of 7 and 14 days of discontinuance of drug treatment. Five N-isobutylamides, one 2-methylbutylamide and one 2-phenylethylamide were identified. The orally administered extract had a dose dependent positive effect on mounting frequency, intromission frequency and ejaculation frequency and the most significant effects (p <0.05) were observed at 150mg/kg treatment, even after a lapse of 7 and 14 days of discontinuance of drug treatment. A dose dependent effect was also observed on the FSH, LH and testosterone serum levels. With 150mg/kg of ethanolic extract the values for FSH, LH and testosterone were 3.10±0.25mlU/ml, 6.87±0.18mlU/ml and 3.72±0.12ng/ml, respectively. In vitro nitric oxide release was 21.7±2.9μM, which was significantly higher compared to the control group (p <0.01). Sildenafil citrate exhibited also a significant effect on NO release, but no effect on hormone levels of rats was observed. The aphrodisiac potential of an ethanolic Spilanthes acmella extract was demonstrated in vitro and in vivo. N-Alkylamides might attribute to the improved sexual potential. Study lends support to the traditional utilization of S. acmella as a sexual stimulating agent. [Copyright &y& Elsevier]

An efficient protocol for in vitro flowering of Spilanthes acmella Murr., a medicinally valuable plant, has been developed. Multiple shoot formation of up to 4 shoots was obtained on Murashige and Skoog (MS) medium supplemented with BAP (1.0 mg/l). Regenerated shoots were subcultured cultured on MS medium containing various concentrations of BAP alone or in combination with IAA. Presence of BAP in the culture medium was observed to be absolutely essential for induction of flower. Maximum percentage (50 %) of flower induction occurred when regenerated shoots were cultured on MS medium supplemented with BAP (2.0 mg/l) + IAA (0.5 mg/l) under photoperiod of 16/8 h (light/dark cycle).The 3-week intervals for three consecutive subcultures on this medium were efficient for flower induction. The regenerated shoots rooted best on 1/2 MS medium containing IBA (1.0 mg/l). Rooted plantlets were hardened and established in pots with 70% survival rate. [ABSTRACT FROM AUTHOR]

Abstract: N-Alkylamides are a promising group of naturally occurring bio-actives, with evidence for immune stimulating properties, which find applications i.a. in buccal preparations. In Spilanthes extracts, these properties are mainly ascribed to the most abundant N-isobutylamide, spilanthol. Yet, other N-alkylamides present in these extracts may contribute to this effect, as well as to its potential toxicity and physiologic interactions. Therefore, N-alkylamide profiling of an ethanolic Spilanthes extract was performed using a gradient reversed phase high performance liquid chromatography/electrospray ionization ion trap mass spectrometry (HPLC/ESI-MS) method on an embedded polar column. MS1 and MS2 fragmentation data were used for identification purposes. Moreover, the transmucosal behaviour of spilanthol, formulated in this ethanolic extract and in two commercially available oral gels, was evaluated using porcine buccal mucosa in a Franz diffusion cell experimental set-up. A high-throughput HPLC-UV method was used for the quantification of spilanthol in the receptor phase. Fundamental permeation characteristics of spilanthol in a solvent-independent way (100% aqueous dose solution) were obtained using different propylene glycol/water ratios. Eight N-isobutylamides, two 2-methylbutylamides and one 2-phenylethylamide were detected, with spilanthol as most abundant N-alkylamide (88.8%). Up till now, two of these N-isobutylamides were not yet described in Spilanthes extracts. We demonstrated for the first time that spilanthol permeates the buccal mucosa. Depending on the formulation, a more pronounced local or systemic effect is achieved, which is important for the regulatory product classification. The purely aqueous permeation coefficient K p,aq (±SEM) was found to be 11.3 (±0.403)10−3 cm/h. [Copyright &y& Elsevier]

An efficient and improved in vitro propagation system for Spilanthes acmella L. using transverse thin cell layer (tTCL) culture system was established. The frequency of shoot regeneration from tTCL nodal segments was affected by concentrations of plant growth regulators and orientation of the explant. MS (Murashige and Skoog in Physiol Plant 15:473–497, 1962) medium with 5.0 mg dm−3 BAP was optimal for shoot regeneration. Upon this medium, the explant inoculated in the upright orientation exhibited a high frequency of shoot regeneration (about 97%), and the highest number of shoots (31.5) per explant. The intact node (1.0–1.5 cm) cultured on the same medium had significantly lower shoot multiplication ability with only 4.5 shoots per responsive explant. As compared to BAP alone, the combination of BAP and Kin or NAA did not have positive effects on shoot multiplication from tTCL nodal segments. Rooting of shoots was achieved on growth regulator free full-strength MS medium. Plantlets were transplanted into soil with 90–100% survival rate. [ABSTRACT FROM AUTHOR]

Paracress ( Spilanthes acmella ) is commonly used as a spice, e.g., in Madagascar. To get more information about the taste active compounds, Jambu oleoresin produced from Spilanthes acmella and extracts prepared directly from the plant were fractionated and the fractions were analysed and evaluated by tasting. In addition to the long known tingling compounds (2 E ,6 Z ,8 E )-deca-2,6,8-trienoic acid N -isobutyl amide (spilanthol) and (2 E ,6 Z ,8 E )-deca-2,6,8-trienoic acid N -(2-methylbutyl) amide, as a minor constituent also the new 2-ketol ester (7 Z ,9 E )-2-oxo-undeca-7,9-dienyl 3-methylbut-2-enoate (acmellonate) was isolated. The structure of the latter compound was verified by total synthesis of the ketol ester via the reaction of tris(trimethylsilyloxy)ethene and (6 Z ,8 E )-deca-6,8-dienoic acid chloride and subsequent classical esterification. Acmellonate shows a weak tingling and numbing effect on the tongue and contributes only to a small extend to the overall flavour of Jambu. [ABSTRACT FROM AUTHOR]

In the Sri Lankan traditional medicine, Spilanthes acmella Murr. (Family: Compositae) flowers are claimed to possess powerful diuretic activity. However, as yet, the diuretic potential of these flowers is not investigated by scientifically controlled studies. The aim of this study was to evaluate the diuretic potential of Spilanthes acmellaflowers in rats using a cold-water extract (CWE). Different concentrations of CWE (500, 1000, 1500 mg/kg) or vehicle or furosemide (13 mg/kg) were orally administered (N=6 per each treatment group) to hydrated rats and their urine output was monitored at several intervals of time (1–5 h). The highest dose of CWE significantly (P<0.05) and markedly increased the urine output. The onset of this diuretic action was extremely prompt (within 1 h) and lasted throughout the studied period (up to 5 h). The peak effect was evident between 1 and 2 h. Further, the intensity of diuresis induced by the CWE in the first hour was almost similar to that of furosemide. Spilanthes acmella CWE also caused marked increase in urinary Na+ and K+ levels and a reduction in the osmolarity of urine suggesting that it is mainly acting as a loop diuretic. It may also inhibit ADH release and/or action. It is concluded that the Spilanthes acmella CWE has strong diuretic action as is claimed. [Copyright &y& Elsevier]

Nodal expiants of Spilanthes acmella produced normal multiple shoots when cultured vertically on Murashige and Skoog medium (1962) supplemented with 0.5 mg IT1 BA. The number of shoots formed from each expiant was doubled after first 5-week subculture. The nodal expiants placed vertically in Erlenmeyer flask (250, 500, or 1000 mL) produced more multiple shoots than those cultured in 350 mL jam bottles and 500 mL tex-Z flask. Temperature above 28C caused abnormalities of in vitro plantlets. All in vitro plantlets survived after acclimatized and transferred to the outside environment The survived plantlets did not show any morphological abnormalities in the field condition. [ABSTRACT FROM AUTHOR]