Cyclooxygenase Enzyme and Lipid Peroxidation Inhibitory Terpenoids and Steroidal compounds as Major Constituents in Cleome viscosa Leaves

Bioassay guided study of Cleome viscosa Linn. (Cleomaceae) leaves led to the isolation of a new cembrenoid diterpene (1) and three known compounds (2-4) from the hexane extract. The chemical structures of these compounds were elucidated by spectroscopic methods such as NMR (1D and 2D), HRMS and IR and identified and afforded compound 1, malabaric acid (2), stigmast-4-en-3-one (3) and stigmast-4-ene-3,6-dione (4). This is the first report of compounds 1 and 2 from C. viscosa Linn. Isolates were evaluated for anti-inflammatory activity using in vitro cyclooxygenase enzyme (COX-1 and -2) inhibitory assays. The novel cembrenoid diterpene (1) exhibited IC50 values of 8.4 μM for COX-1 enzyme and 45.2 μM for COX-2 enzyme, respectively. Similarly, malabaric acid (2) exhibited IC50 values of 11.5 μM for COX-1 enzyme and 46.9 μM for COX-2 enzyme, respectively. Their inhibitory activities were in par with non-steroidal anti-inflammatory drugs aspirin, ibuprofen and naproxen. Sterols 3 and 4 gave IC50 values of 62.6 and 67.9 μM, respectively for COX-1 enzyme while indicating weak COX-2 enzyme inhibition. Lipid peroxidation inhibitory (LPO) and MTT assays were used to determine antioxidant activity of these compounds. Compounds 1-4 showed LPO inhibition with IC50 values between 82 and 100 µM and moderate antioxidant activity in the MTT assay. Biological activities reported for these compounds are for the first time and it support anecdotal medicinal claims of C. viscosa Linn. leaves.

Cleome Viscosa Exhibits Cytotoxicity in Vitro and improves Tumor Inhibitory Properties in Vivo in Liquid Tumor Model

Cancer is one of the major causes of death in the world today. Although chemotherapeutic regimen remains the prime treatment of cancer, it is important to explore for newer compounds due to their adverse reactions and the growing rate of resistance. Traditionally, some plants are used for the treatment of cancers in India. However, no scientific data backing the evidence exists for the same. Among such plants is Cleome viscosa Linn, which is used in the Indian system of medicine for cancer treatment. To test its anticancer activity and generate scientifically reliable data, the extraction of whole plant has been carried out using methanol and fractions were generated using petroleum ether, dichloromethane, ethyl acetate and n-butanol. The fractions were first tested in vitro for their antiproliferative activity and mechanistic studies. In this paper, we report the anticancer potential of the fractions by a preliminary cytotoxicity activity in vitro using cell lines followed by the liquid tumor (EAC) model in mice. Upon screening on a panel of cancer cell lines, the fractions of petroleum ether, dichloromethane and ethyl acetate were found to possess significant cytotoxic activity on Hela and U343 cell lines. With this evidence, we have then tested the in vivo activity on mice using the liquid tumor model in which the fractions of pet ether, dichloromethane and ethyl acetate exhibit a potential anticancer activity which is evident in characteristics like inhibition of tumor progression, increase in the mean survival time and percentage increased life span along with a decrease in tumor volume. The fractions also showed significant anti-oxidant properties.

Evaluation of Antiepileptic Effect of Cleome viscosa Linn. Leaves Extract in Experimental Animals

Aim: The purpose of this study was to assess the antiepileptic effect of Cleome viscosa Linn. leaves extract in experimental animals. Study Design: The extraction process, acute toxicity study was determined using OECD guidelines, Priliminary phytochemical screening, Antiepileptic pharmacological screening methods and statistical analysis. Place and Duration of Study: The research work was conducted during 10 Jan. 2020 to 10 July 2020 at Dept. of Pharmacology, Rajiv academy for Pharmacy, Mathura (U.P), 281001, India. Methodology: The fresh leaves were shade dried and reduced in size to powder and extracted by soxhlet apparatus. The MECV, CECV and AECV were prepared and subjected to comparative phytochemical profiling for in-vitro analysis. Further the in-vivo screening models like maximal electroshock induced seizures (MES), picrotoxin (PTX) and pentylenetetrazole (PTZ) induced models are used to assess the anti-epileptic effects of the methanol, chloroform and aqueous extracts of Cleome viscosa. Results: The extracts were subjected to phytochemical tests and the carbohydrate, tannins, alkaloids, saponins, flavonoids, steroids and glycosides were found to be present. In the MES induced seizures, MECV (200 mg/kg) showed high significant inhibition on tonic hind limb extension (THLE) (9.33±0.33***), decrease in duration of stupor period (145.2 ± 2.59***) and decreased mortality significantly. In PTX induced model, MECV (200 mg/kg) showed high significant delay on the onset of convulsions (18.00±0.63***), decreased duration of convulsion (3.50 ± 0.18***) and decreased mortality significantly. In PTZ induced model, MECV and AECV (200mg/kg) showed high significant delay on the onset of convulsions (2.55 ± 0.10***), (2.50 ± 0.18***), decreased duration of convulsion (3.67 ± 0.11***), (4.33 ± 0.17**) and decreased mortality significantly. Conclusion: It is clear from the preceding that Cleome viscosa has antiepileptic properties.

Sobre los riesgos y beneficios entomológicos asociados a tres especies del género Cleome Linnaeus, 1753 (Brassicales: Cleomaceae), con potencialidades bioestimulantes

Desde su descubrimiento el uso de bioestimulantes en la agricultura es una práctica habitual que beneficia la producción de alimentos. A pesar de ello, la disponibilidad y oferta de productos de esa naturaleza es baja, lo que conlleva a la búsqueda de alternativas que permitan desarrollar productos innovadores de más fácil acceso para los productores. En este sentido las plantas con efectos alelopáticos despiertan interés por el uso potencial de sus extractos en los sistemas de producción (Arroyo 2017). Cleome Linnaeus, 1753 (Brassicales: Cleomaceae), es un género botánico al que se le viene dando seguimiento pues especies como Cleome viscosa L., Cleome gynandra L. y Cleome spinosa Jacq., han mostrado un efecto alelopático positivo en varios cultivos (Pupo et al. 2006; Avilés et al. 2014; Batista 2015; Román 2016 y Montano 2016). Estos resultados apuntan a que dichas especies pueden ser candidatas para elaborar nuevos bioestimulantes de uso agrícola, sin embargo, la obtención de productos naturales necesita una fuente de producción constante del material vegetal.

in silico-Based Virtual Screening and Molecular Docking Analysis of Phytochemicals obtained from Methanolic Extract of Cleome viscosa Linn. by GC-MS Method for its Anticancer Activity

Cleome viscosa belonging to the family Capparidaceae, is a weed with ethano-botanical value found in India. In the present investigation, methanolic extract of Cleome viscosa was analyzed by gas chromatography-mass spectrometry (GC-MS) to identify the important phytochemical constituents. The GC-MS analysis of methanol from whole plant of Cleome viscosa detected the presence of 78 phytochemical compounds. Quantitative phytochemical evaluation of the methanolic extract of Cleome viscosa was performed. These identified compounds were analyzed for their anticancer activity through in silico molecular docking studies. Computation based in silico docking studies were done using maestro interface. Three protein, poly (ADP-ribose) polymerase-1 (PARP-1), epidermal growth factor receptor (EGFR), human papilloma virus (HPV) specific to different cancers were selected for screening of these phytochemicals. Phytomolecules with better activity and binding were shortlisted after XP mode of docking. The dock score, glide energy and 2D binding interactions of the top five phytochemicals with three selected proteins have been discussed. The identified hit could be a potent inhibitor these proteins that further requires experimental validation.