Rapid in vitro adventitious rooting and proliferation by leaf and nodal cultures of Momordica cymbalaria Fenzl.

An effective approach for rapid in vitro rooting and proliferation of leaf and nodal cultures of Momordicacymbalaria has been developed. To the ability of induction of rhizogenesis, both leaf and nodal explants wereused in culture on Murashige and Skoog (MS) medium. The effects of auxins such as α-naphthaleneaceticacid (NAA), indole-3-butyric acid (IBA), and indole-3-acetic acid (IAA) at different concentrations have beenstudied. The maximum number of roots was produced from nodal explants containing 1.5 mg/L of NAA (9.3 ±0.61), 1.0 mg/L of IBA (6.5 ± 0.41), and 1.0 mg/L of IAA (3.5 ± 0.66), and in leaf explants containing 1.0 mg/Lof NAA (5.7 ± 0.56), 1.0 mg/L of IBA (6.9 ± 0.61), and 1.5 mg/L of IAA (5.0 ± 0.73) on the half-strength MSmedium. For the root induction, NAA is the very effective auxin in node explants of M. cymbalaria. Moreover,a large amount of quercetin bioactive compound is presented in the roots, which is used in anticancer drugs, andwe have described an effective method for the in vitro rhizogenesis of the M. cymbalaria.

Evaluation of anti-tumor activity of Momordica cymbalaria fenzl.

Background: The aim of the current study is to evaluate the anti-tumor activity of saponins isolated from the roots of Momordica cymbalaria (MC) against dimethylbenz[a]anthracene (DMBA) induced rats. Methods: A steroidal saponin MC (SMC) was isolated from MC fenzl and purified by preparative high-performance liquid chromatography. Breast cancer was induced in 50-day-old female Sprague-Dawley rats by injecting DMBA (6 mg/kg intravenous) in three doses on day 50, 54, and 57. The rats were randomized into four groups; control, DMBA, SMC (100 mg/kg), and tamoxifen (6.6 mg/kg) to DMBA breast cancer rats. The tumor size, volume, hormonal, antioxidant, and whole mount parameters were estimated. Results: Mean tumor size and volume, luteinizing hormone, and progesterone with superoxide dismutases, catalase, and glutathione levels increased significantly (p<0.001); serum estradiol, follicle stimulating hormone with lipid peroxidation decreased significantly (p<0.001) in DMBA-induced breast cancer and vice versa in SMC and tamoxifen. Terminal end buds, terminal ducts, alveolar buds, and lobules decreased significantly (p<0.001) in DMBA-induced breast cancer whereas increased significantly in SMC and tamoxifen. Histological necrosis and hemorrhage along with focal desmoplastic reaction in DMBA-induced breast cancer; ductile elongation and hyperplasia of both ducts and alveoli were prominent, with increased secretory activity in SMC group. The results confirmed the chemopreventive effect of SMC and tamoxifen in DMBA-induced breast cancer. Conclusions: The SMC exhibited anti-tumor activity against mammary cancer, which may be due to its anti-estrogenic, antioxidant activity.

Antiangiogenic and anticancer activity of saponins of Momordica cymbalaria.

Background: The aim of the current study was to evaluate invitro anticancer activity of saponins of MC on EAC cells by using cytotoxicity (MTT) assay. To evaluate in vivo antiangiogenic potential of saponins of MC on rat air sac angiogenesis, EAC induced peritoneal angiogenesis, CAM angiogenesis. Methods: MTT assay was carried out at different concentrations of saponins of MC in 12 microliter plates containing media with EAC cells. In rat air sac angiogenesis, carrageenin was injected (s.c.) into the air sac. Dexamethasone, indomethacin, saponins of MC was administered to identify the angiogenic activity. In EAC induced angiogenesis in peritoneum, EAC cells were administered through i.p in mice peritoneum. 5-fluoro uracil, (i.p) and saponins of MC (orally) was given to identify angiogenic activity. In CAM angiogenesis, erythropoietin was given to eggs on 8th day of incubation. saponins were given on the 12th day for two days to observe the antiangiogenic activity. Results: The observed cytotoxic effects of saponins of MC on EAC cells find statistically significant. There is significant reduction in vascular branching in rat air sac model; EAC induced peritoneal angiogenesis, CAM model by the saponins of MC. Conclusions: Due to lack of certain records, it is envisaged that the change of medicine both discontinuation as well as addition was done because of blood glucose control, cost factor [in case of pioglitazone] as well as patient’s compliance.

Antidiabetic activity of a triterpenoid saponin isolated from Momordica cymbalaria Fenzl.

Glucose uptake by isolated diaphragms of both diabetic, following streptozotocin administration, and non-diabetic animals increased in presence of an oleanane-type triterpenoid saponin isolated from the roots of M. cymbalaria. Insulin release was augmented by the presence of the saponin of M. cymbalaria (1 mg/mL) in rat insulinoma cell line (RIN-5F) pre-exposed to adrenaline (5 µM) and nifedipine (50 µM). Pancreatic histology also indicated considerable quantitative increase in β-cells (75%) when treated with the saponin. The results suggest that the saponin of M. cymbalaria possesses potential antidiabetic activity with respect to insulin secretion, which may be attributed to modulation of calcium channel, and β-cell rejuvenation.

Methanolic extract of Momordica cymbalaria enhances glucose uptake in L6 myotubes in vitro by up-regulating PPAR-γ and GLUT-4 / 中国天然药物

The present study was undertaken to evaluate the influence of the methanolic fruit extract of Momordica cymbalaria (MFMC) on PPARγ (Peroxisome Proliferator Activated Receptor gamma) and GLUT-4 (Glucose transporter-4) with respect to glucose transport. Various concentrations of MFMC ranging from 62.5 to 500 μg·mL(-1) were evaluated for glucose uptake activity in vitro using L6 myotubes, rosiglitazone was used as a reference standard. The MFMC showed significant and dose-dependent increase in glucose uptake at the tested concentrations, further, the glucose uptake activity of MFMC (500 μg·mL(-1)) was comparable with rosigilitazone. Furthermore, MFMC has shown up-regulation of GLUT-4 and PPARγ gene expressions in L6 myotubes. In addition, the MFMC when incubated along with cycloheximide (CHX), which is a protein synthesis inhibitor, has shown complete blockade of glucose uptake. This indicates that new protein synthesis is required for increased GLUT-4 translocation. In conclusion, these findings suggest that MFMC is enhancing the glucose uptake significantly and dose dependently through the enhanced expression of PPARγ and GLUT-4 in vitro.