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PubMed2004

Asiaticoside induction for cell-cycle progression, proliferation and collagen synthesis in human dermal fibroblasts.

Asiaticoside, isolated from Centella asiatica, promotes fibroblast proliferation and extracullar matrix synthesis in wound healing. The precise mechanism, however, in molecular and gene expression levels still remains partially understood. Using cDNA microarray technology, the alternation of genes expression profiles was determined in a human dermal fibroblast in vitro in the presence of asiaticoside (30 microg/ml). Fifty-four genes, with known functions for cell proliferation, cell-cycle progression and synthesis of the extracellular matrix, were significantly up-regulated in our "whole-genes nest" expression profile at various timepoints. Furthermore, mRNA levels and protein productions of certain genes responsible for extracellular matrix (ECM) synthesis (e.g. encoding type I and type III collagen proteins) were evaluated by Northern blot and radioimmunoassay, respectively. As a result, there is a close correlation among the gene profile, mRNA and protein production in the cells response to asiaticoside stimulation. This information could be used for exploring the target genes in response to asiaticoside in fibroblasts.

Cell Cycle↗
PubMed1985

Contact dermatitis due to madecassol.

Madecassol is an extract of Centella asiatica, a member of the Umbelliferae family. It contains madecassic acid, asiatic acid and asiaticoside. It has been used as a wound healing agent and for the prevention of cicatrization. We report contact dermatitis due to Madecassol and a control study with its individual ingredients.

Adolescent↗
PubMed1990

Capillary filtration and ankle edema in patients with venous hypertension treated with TTFCA.

The variation of capillary filtration rate (CFR), ankle circumference (AC), and ankle edema (AE) was evaluated in three groups of patients with venous hypertension (ambulatory venous pressure greater than 42 mmHg) and in a group of normal subjects before and after treatment for four weeks with Total Triterpenic fraction of Centella Asiatica (TTFCA), a venoactive drug acting on the microcirculation and on capillary permeability. Group A (20 patients) was treated with TTFCA 60 mg tid; Group B (20 patients) was treated with 30 mg tid; Group C (12 patients) was treated with placebo; and Group D (10 normal subjects) was treated with TTFCA 60 mg tid in an open study. Capillary filtration rate was assessed by venous occlusion plethysmography, ankle edema by a new system called AECT (Ankle edema coin tester). Subjective symptoms of venous hypertension were assessed by an analogue scale line considering four symptoms: swelling sensation, restless lower extremity, pain and cramps, and tiredness. CFR, AC, and AE were significantly higher in patients in comparison with normal subjects. After four weeks of TTFCA treatment there was a significant decrease of the abnormally increased CFR, AC, and AECT time in patients. This was also greater in the higher dose group. No significant change was observed in the placebo group and in normal subjects treated with TTFCA. Symptoms were also significantly improved in the two groups treated with the active drug according to the dose. No significant changes were observed in the placebo group.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1990

Improvement of capillary permeability in patients with venous hypertension after treatment with TTFCA.

The VSC (vacuum suction chamber) device, a new system to evaluate local capillary permeability, was used with laser Doppler flowmetry to study variations of permeability and of the microcirculation in 10 normal subjects; in 22 patients with moderate, superficial venous hypertension; and in 12 patients with postphlebitic limbs and severe venous hypertension. All these patients had distal (ankle and foot edema) in the evening. After a first assessment these subjects were studied again after two weeks without treatment and after two weeks' treatment with total triterpenic fraction of centella asiatica (TTFCA), tablets, 60 mg, tid. The VSC produces a wheal on the skin of the perimalleolar region that disappears (in average) in less than sixty minutes in normal subjects. The disappearance time (DT) is greater in conditions of increased capillary filtration and permeability. The three groups of subjects (normal and those with superficial and severe venous hypertension) had significantly different, increasing disappearance time of the wheals at the first observation. There were no significant changes after two weeks' observation, but after 2 weeks' treatment with TTFCA, there was a significant decrease of DT both in limbs with superficial and with deep venous incompetence. The improvement (decrease) of the abnormally increased capillary permeability was associated with a significant improvement of the microcirculation and symptoms (studied by an analogue scale line). In conclusion this study showed a combined improvement of the microcirculation and capillary permeability after treatment with TTFCA and the possibility of using the VSC to evaluate the effects of drugs (or other treatment) on local capillary permeability in patients with venous hypertension.

Adult↗
PubMed2003

Plant medicines of Indian origin for wound healing activity: a review.

Research on wound healing drugs is a developing area in modern biomedical sciences. Scientists who are trying to develop newer drugs from natural resources are looking toward the Ayurveda, the Indian traditional system of medicine. Several drugs of plant, mineral, and animal origin are described in the Ayurveda for their wound healing properties under the term Vranaropaka. Most of these drugs are derived from plant origin. Some of these plants have been screened scientifically for the evaluation of their wound healing activity in different pharmacological models and patients, but the potential of most remains unexplored. In a few cases, active chemical constituents were identified. Some Ayurvedic medicinal plants, namely, Ficus bengalensis, Cynodon dactylon, Symplocos racemosa, Rubia cordifolia, Pterocarpus santalinus, Ficus racemosa, Glycyrrhiza glabra, Berberis aristata, Curcuma longa, Centella asiatica, Euphorbia nerifolia, and Aloe vera, were found to be effective in experimental models. This paper presents a limited review of plants used in Ayurvedic medicine.

Journal Article↗
PubMed2006

A review of the microcirculation in skin in patients with chronic venous insufficiency: the problem and the evidence available for therapeutic options.

Impairment of the cutaneous microcirculation is a major predisposing factor in inflammation and ulceration in patients with chronic venous insufficiency (CVI). Increase of capillary filtration rate predisposes to the formation of edema. Local lymphedema is a complication of CVI, often underdiagnosed. This review is focused on CVI but excludes the complication of ulceration. Treatment of microcirculatory dysfunction can be done by pharmacologic intervention or compression therapy or using a combination of both. This review is focused on drugs that have been evaluated by randomized prospective controlled trials. The following compounds are discussed: horse chestnut seed extracts, flavonoids, red vine leaves extracts, total triterpenic fraction of Centella asiatica (L), prociadins, calcium dobesilate, and pentoxifylline. The microcirculatory effects of compression therapy using bandages or stockings are also reviewed. The major microcirculatory effects that have been shown are the reduction of capillary filtration rate and improvements in levels of transcutaneous partial pressures of oxygen and carbon dioxide (TcPO(2) and TcPCO(2)). Available data suggest that a combination of pharmacologic and compression therapy may have some additive effects.

Chronic Disease↗
PubMedDate not supplied

In vitro evaluation of inhibitory nature of extracts of 18-plant species of Chhindwara against 3-keratinophilic fungi.

Effect of extract of 18 plant species, viz., Acorus calamus, Adhatoda vasica, Amomum subulatum, Andrographis paniculata, Boerhaavia diffusa, Cassia occidentalis, Centella asiatica, Cymbopogon citratus, Hemidesmus indicus, Hyptis suaveolens, Malvestrum sp., Passiflora edulis, Pergularia daemia, Peristrophe bicalyculata, Shuteria hirsuta, Solanum nigrum, Tecoma stans, and Verbascum chinense on the growth of Microsporum gypseum, Chrysosporium tropicum and Trichophyton terrestre was evaluated and discussed. The sensitivity of the keratinophilic fungi was evaluated by dry-weight method. The maximum inhibition of mycelial growth was shown by M. gypseum (86.62%) followed by T. terrestre (81.86%) and C. tropicum (74.06%) when treated with S. hirsuta whereas the minimum inhibition was exhibited by M. gypseum (0.29%), C. tropicum (0.16%) and T. terrestre (1.76%) when tested with the extract of P. edulis, A. vasica and B. diffusa respectively.

Antifungal Agents↗
PubMed2001

Hemorrhoids and varicose veins: a review of treatment options.

Hemorrhoids and varicose veins are common conditions seen by general practitioners. Both conditions have several treatment modalities for the physician to choose from. Varicose veins are treated with mechanical compression stockings. There are several over-the-counter topical agents available for hemorrhoids. Conservative therapies for both conditions include diet, lifestyle changes, and hydrotherapy which require a high degree of patient compliance to be effective. When conservative hemorrhoid therapy is ineffective, many physicians may choose other non-surgical modalities: injection sclerotherapy, cryotherapy, manual dilation of the anus, infrared photocoagulation, bipolar diathermy, direct current electrocoagulation, or rubber band ligation. Injection sclerotherapy is the non-surgical treatment for primary varicose veins. Non-surgical modalities require physicians to be specially trained, own specialized equipment, and assume associated risks. If a non-surgical approach fails, the patient is often referred to a surgeon. The costly and uncomfortable nature of treatment options often lead a patient to postpone evaluation until aggressive intervention is necessary. Oral dietary supplementation is an attractive addition to the traditional treatment of hemorrhoids and varicose veins. The loss of vascular integrity is associated with the pathogenesis of both hemorrhoids and varicose veins. Several botanical extracts have been shown to improve microcirculation, capillary flow, and vascular tone, and to strengthen the connective tissue of the perivascular amorphous substrate. Oral supplementation with Aesculus hippocastanum, Ruscus aculeatus, Centella asiatica, Hamamelis virginiana, and bioflavonoids may prevent time-consuming, painful, and expensive complications of varicose veins and hemorrhoids.

Diagnosis, Differential↗
PubMedDate not supplied

Asiatic acid derivatives protect cultured cortical neurons from glutamate-induced excitotoxicity.

Asiatic acid, a triterpene of Centella asiatica (L.) Urban (Umbelliferae), has been patented as a treatment for dementia and an enhancer of cognition by the Hoechst Aktiengesellschaft (EP 0 383 171 A2). We modified the chemical structure of asiatic acid and obtained 36 derivatives of asiatic acid in an attempt to prepare neuroprotective compounds that were more efficacious than asiatic acid itself. The neuroprotective activities of these derivatives were evaluated using primary cultures of rat cortical neurons insulted with the neurotoxin, glutamate, as an in vitro screening system. Among the semi-synthesized derivatives, three derivatives significantly mitigated the neurotoxicity induced by glutamate in this screening system. The neuroprotective activities of these 3 derivatives appeared to be more powerful than that of asiatic acid itself. These 3 derivatives significantly attenuated decreases in the levels of glutathione, glutathione peroxidase and other enzymes, which participate in the cellular defense mechanisms blunting oxidative stress. Furthermore, they significantly reduced the overproduction of NO induced by glutamate. These results showed that these derivatives of asiatic acid exerted significant neuroprotective effects on cultured cortical cells by their potentiation of the cellular oxidative defense mechanism. Therefore, these agents may prove to be efficacious in protecting neurons from the oxidative damage caused by exposure to excess glutamate.

Animals↗
PubMedDate not supplied

An in vitro, ex vivo, and in vivo demonstration of the lipolytic effect of slimming liposomes: An unexpected alpha(2)-adrenergic antagonism.

Most of the slimming products already developed for cosmetic applications did not result from strategies that integrate whole lipolysis-regulating mechanisms. We thus focused our attention on a more complete integration of these mechanisms and we developed slimming liposomes (SLC) containing two micro-circulation activators, i.e., esculoside and Centella asiatica extracts, one phosphodiesterase inhibitor, i.e., caffeine, and one fatty acid-beta oxidation activator, i.e., L-carnitine. The validity of our approach was assessed through (a) in vitro tests demonstrating that SLC induced a dramatic increase in the cyclic adenosine monophosphate (cAMP) content in human adipocytes, with a subsequent rise in the nonesterified fatty acids (NEFA) content of human adipocyte incubation medium, and (b) in vivo studies showing that SLC could provide an actual potent slimming effect on human volunteers. Moreover, we give here, through binding experiments, the unambiguous demonstration that SLC is able to antagonize the alpha(2)-adrenergic receptor that is known to reduce intracellular AMPc content and, subsequently, to down-regulate lipolysis. This alpha(2)-adrenergic antagonism has never been reported for any component of SLC, and this work is the first demonstration of the alpha(2)-adrenergic antagonism of such a combination of active liposome compounds.

Adipocytes↗
PubMed2003

Nutritional support for wound healing.

Healing of wounds, whether from accidental injury or surgical intervention, involves the activity of an intricate network of blood cells, tissue types, cytokines, and growth factors. This results in increased cellular activity, which causes an intensified metabolic demand for nutrients. Nutritional deficiencies can impede wound healing, and several nutritional factors required for wound repair may improve healing time and wound outcome. Vitamin A is required for epithelial and bone formation, cellular differentiation, and immune function. Vitamin C is necessary for collagen formation, proper immune function, and as a tissue antioxidant. Vitamin E is the major lipid-soluble antioxidant in the skin; however, the effect of vitamin E on surgical wounds is inconclusive. Bromelain reduces edema, bruising, pain, and healing time following trauma and surgical procedures. Glucosamine appears to be the rate-limiting substrate for hyaluronic acid production in the wound. Adequate dietary protein is absolutely essential for proper wound healing, and tissue levels of the amino acids arginine and glutamine may influence wound repair and immune function. The botanical medicines Centella asiatica and Aloe vera have been used for decades, both topically and internally, to enhance wound repair, and scientific studies are now beginning to validate efficacy and explore mechanisms of action for these botanicals. To promote wound healing in the shortest time possible, with minimal pain, discomfort, and scarring to the patient, it is important to explore nutritional and botanical influences on wound outcome.

Amino Acids↗
PubMed2005

[Healing activity of methanolic extract of the barks of Spathodea campanulata Beauv (Bignoniaceae) in rat experimental burn model].

Spathodea campanulata Beauv. (Bignoniaceae) is widely distributed through Africa and found in particular in Cameroon and Senegal. It is used in traditional herbal medicine for the treatment of ulcers, filaria, gonorrhea, diarrhea and fever. S. campanulata was also known in Cameroon traditional medicine to have a healing activity in burn wounds. The aim of the present study was to assess the burn healing effectiveness of the methanolic extract of the barks of S. campanulata ointment (MEBSCO) in comparison to those of Centella asiatica and Peru's balm in experimental burn model in rats. Experimental burn was made in rat under chloral anaesthesia with electric iron (200 degrees C) on the right and left side of the medianus line. Topical applications of MEBSCO (2%, 10% and 49%) dose-dependently decreased the score damage of the burn site. Treatment with 10% and 49% of MEBSCO varied the score damage from 5 to 1 +/- 0.4 and 5 to 0.2 +/- 0.5 (p < 0.05, n = 5) respectively, at day 15 after experimental burn. As well as C. asiatica (1%) and Peru's balm (1%) ointments, MEBSCO (10% and 49%) induced a complete burn healing on the 19-20th post burn day. This study shows for the first time, the burn healing effectiveness of MEBSCO in experimental burn model. It also provides a rational use of the S. campanulata barks in traditional medicine to promote burn healing.

Animals↗
PubMed1994

Amino Acid analysis of intellan, a herbal product used in enhancing brain function.

Analysis of the drug "INTELLAN" and two reputed plants i.e. Centella asiatica and Herpestis monniera used in the preparation of the drug reveals that glutamic and aspartic acids are present in high concentration in the drug and are also required by brain in high concentration to keep itself in higher gears. Both these amino acids are used as neurotransmitters and also in stabilizing and stimulating the activities of brain, thus resulting in better performance.

Journal Article↗
PubMed2006

[Plant metabolites as nootropics and cognitives].

Nowadays several millions of people suffer from Alzheimer's disease and other types of dementia. Etiology of these diseases is not known very well. There occur different levels of neurotransmitters, the level of acetylcholine in the brain is decreased and pathological changes affect the brain tissue. Organic and toxic damage of the brain, free radicals, and other changes participate in the development of these diseases. Drugs as nootropics, cognitives, and neuroprotectives are commonly used to treat these diseases. Some of these drugs have often side and undesirable effects. In recent years some natural substances (galanthamine, huperzine A, vinpocetine), and standardized plant extracts (Ginkgo biloba L., Centella asiatica L.) Urban, Bacopa monniera L., Evolvulus alsinoides L.) are often used. These plant preparations produce fewer undesirable effects and the same effectiveness as the classic therapy, or these preparations are used as a supplement to the classic therapy.

Alzheimer Disease↗
PubMed1989

An experimental study of the anti-HSV-II action of 500 herbal drugs.

Experimental assessments were made on the anti-HSV-II action of 500 herbs by determinations of the virus inhibition logarithm (VIL). 13 highly effective herbs (VIL greater than or equal to 4.00) were screened cut, providing a rational basis for clinical therapy. Among these effective herbs, 10 were aqueous extracts of Artemisia anomala, Centella asiatica, Epimedium Sagittatum, Hibiscus mutabilis, Hosta plantaginea, Hypericum japonicum, Inula japonica, Mosla punctata, Rhododendron simsii, and Rhus chinenses, while 3 were alcohol extracts of Epimedium Sagittatum, Hypericum japonicum, and Mosla punctata.

Antiviral Agents↗
PubMedDate not supplied

[Medical and surgical therapies. Their respective indications in lymphedema].

The treatment of lymphedema, medical or surgical, remains a difficult one. Often seen at an advanced stage of the disease, the medical treatment can only stabilize the lesions. Among them, the coumarins, rutins, Centella asiatica extracts, procyanoside oligomers are the most prescribed. But prophylaxis of superimposed infections by antibiotics should not be omitted. As for diuretics, they must be prohibited. Hygienic and dietetic measures should be recommended. As for surgical treatments, they are numerous and rarely applied, whether it consists of the tacking technique or Degni's lymphovenous anastomosis. The latter may be considered in case of high lymphatic obstruction, especially at the inguinal level. Servelle's lymphangiectomy, very traumatic, is only exceptionally indicated.

Adolescent↗
PubMed1978

[Modification of the kinetics of healing after iterative exeresis in the rat. Action of a triterpenoid and its derivatives on the duration of healing].

The authors have studied the action of Titrated Extract of Centella asiatica (TECA) on the duration off healing of iterative wounds in the Rat. After repeated exeresis, the planimetric quantification of the wounds, by episcopic projection, shows that the healing process involves an immediate phase of dilatation followed by another of contraction. A mathematical analysis has permitted determination of times of semi-healing and has shown that these are significantly lengthened after several exeresis in the control group. When administered by oral route, at a 100 mg/kg dosing, TECA shortens significantly this lengthening of time, acting more specifically on the immediate process of healing.

Animals↗