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Impact of Aqueous Extract of Hildegardia Barteri Leaves on Calcium Channel Activity Dependent Voltages

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Impact of Aqueous Extract of Hildegardia Barteri Leaves on Calcium Channel Activity Dependent Voltages International Journal of Research in Pharmacy and Biosciences Volume 4, Issue 3, 2017, PP 27-38 ISSN 2394-5885 (Print) & ISSN 2394-5893 (Online) Impact of Aqueous Extract of Hildegardia Barteri Leaves on Calcium Channel Activity Dependent Voltages Michodjehoun Loetitia, Seibou Toleba Soumanou, Koukoui Omedine, Adoho Chimene Assou Eudoxie, Gbenou Joachim, Sezan Alphonse* Laboratory of Biomembranes and Cell Signaling, University of Abomey Calavi, Benin *Corresponding Author: Sezan Alphonse, Laboratory of Biomembranes and Cell Signaling, University of Abomey Calavi, 06 BP 3041 Cotonou, Benin. ABSTRACT The present study was carried out with the aim of evaluating the diuretic, naturiuretic activity and the action of the aqueous extract of the leaves of Hildegardia barteri on the function of voltage dependent calcium channels. After oral gavage of the aqueous extract of the leaves of Hildegardia barteri at doses of rats 10; 25; 50; 67; 5; 100; 135; 202, 5 mg / kg bw, to wistar rats, the volume of urinary excretion was measured as well as natriuresis-natraemia; Kaliuresis-kaliemie; Chloruresis-chloramemia; Calcium-calcium, magnesuria- magnesemia, urinary urea, creatinuria, urinary pH, and blood transaminases (ASAT-ALAT). The results show that the basal diuresis after 6 h is 6.05 ± 0.85 and 11.6 ± 0.7 after 24 h. The pH between 8.9 and 10.05 with a standard error of 9.7 ± 0.3. Important diuretic activity was observed at a dose of 67.5 mg / kg (147.5 ± 17.5) bw compared to furosemide (as a reference drug) at 20 mg / kg bw (92.25 ± 6.75). The aqueous extract of Hildegardia barteri leaves at a dose of 67.5 mg / kg bw may therefore be a loop diuretic or a thiazide diuretic; And also facilitates the elimination of urea and creatinine. Elevation of serum calcium suggests that the active molecule in the aqueous extract of the leaves of Hildegardia barteri is a beta adrenergic agonist or a beta adrenergic antagonist by binding to the beta-1-adrenergic receptor; Thereby inhibiting the effects of adrenaline; Blocking the entry of extracellular calcium and thus inducing cardiac muscle relaxation. This may justify its use in tradithérapie as an antihypertensive. Thus, at a dose of 10 mg / kg bw, the aqueous extract of the leaves of Hildegardia barteri could be an antihypertensive agent. Keywords: Hildegardia barteri, diuretic activity, calcium channels dependent voltages INTRODUCTION Parka biglobosa, Creative andesine, Trida procumbent, Hildegard a barteri ... etc. Are Research in the field of phototherapy does not plants used by traditional healers in the date nowadays and is expanding in the world. treatment of cardiovascular disease? Indeed, several pharmacological studies are carried out all over the world in the framework Thanks to modern techniques, we are of the research of new active molecules through elucidating the functioning of the organism on the valorisation of the plants. In Africa, the particle scale. Thus, one realizes that the traditional medicine uses many medicinal herbal transmembrane channels, these microscopic recipes for the treatment of various diseases. pores which are on the surface of the cell, play a primordial role in the exchanges between the In Benin, the low purchasing power of cell and its environment. Input and output of populations and the high cost of treatment limit ions such as sodium and calcium determine the the purchase of pharmaceutical products and function of vital organs such as the heart, rural populations depend on traditional medicine muscles, neurons, etc. For example, calcium to meet their therapeutic needs (Nondichao). channels play a crucial role in the contraction of Plants are recognized as a wonderful source of the heart muscle (PHARMATERM, vol 5) medicines. Currently more than 1000 species of plants are used as medicines in traditional Hildegard a barteri (Kariya), a tree of the family therapeutics (Merles and Farnsworth, 1995). Malvaceae was essentially an ornamental in However, for most of them the scientific West Africa (Hildegardia notes, 2009); evidence is not yet elucidated. Heliotropism Cultivated for its beautiful flowers (Hildergadia indium, Lantana camera, Persia Americana, International Journal of Research in Pharmacy and Biosciences V4 ● I3 ● 2017 27 Impact of Aqueous Extract of Hildegardia Barteri Leaves on Calcium Channel Activity Dependent Voltages Notes, 2007). In the old system of classification, paper. The filtrate obtained is evaporated at 60 ° it had been placed in the Sterculiaceae. The C. using the Rotavapor® rotary evaporator. The genus is named in homage to Saint Hildegard de paste deposited on the bottom of the flask of the Binge for his contribution to herbal medicine evaporator is recovered in jars and dried in an (Schott, H. W., Endlicher, S. F. L. (Carolus oven at 45°C. After thorough drying, the Gerald, 1832)). Its seeds have important extracts are scraped with the stainless steel nutritional properties and traditionally, the spatula, crushed in porcelain mortar and then aqueous decoct ate of its leaves in association kept in glass bottles previously labelled. These with the leaves of Croton zambesicus, extracts will be used to prepare the Commiphora Africana, Osmium basilicas and concentration ranges tested. Cola nitride is used in bath in the treatment of Qualitative Photochemical Study hypertension in Benin. Photochemical screening is based on differential Our work will consist in evaluating according to reactions (coloring and precipitation) of the the pharmacological norms the impact of the main groups of chemical compounds contained aqueous extract of the leaves of Hildegard in plants according to the method of barteri on the diuresis of the wester rat; on the HOUGHTON P.J. and RAMAN A. (1998) activity of calcium channels dependent voltages; revised and adapted to the conditions of the And to determine its possible effects on cardiac Laboratory of Pharmacognosy and Essential muscle relaxation. Oils MATERIALS AND METHODS Evaluation of the Diuretic Activity of Hardware Hildegard Barteri Plant Material Composition of experimental groups and preparation of animals It consists of the leaves of Hildegard barteri harvested in Dassel in March 2016 by the team In order to evaluate the diuretic activity with the of the botanical garden of UAC. The leaves EAHb, we have disposed wester rats of around were dried outdoors in a room outside the weight (180-220g), and of male sex. These rats laboratory from March 16, 2016 to April 21, were fasted for 18 hours before each test with 2016 at room temperature; Finely ground with a free access to tap water only before and after RETSCH knife mill. The powder obtained is receiving salt water overload (except for the then stored in jars of transparent glasses covered basic diuresis package). entirely with aluminium foil and deposited in Our study was based on 09 batches of rats the laboratory at ambient temperature in order to distributed as follows: lot 1 (base diuresis): avoid external contamination 50ml / kg body weight distilled water, lot2 Animal Material (Furosemide, MR): 20mg / kg body weight The animal material consists of blood (serum) Furosemide. Lots 3; 4; 5; 6; 7; 8; 9 have in place of Furosemide the aqueous extract of Hb and urine from male Wister rats weighing between 180g and 220g, bred at the laboratory in the respective doses: 10; 25; 50; 67.5; 100; of the Biomembranes Laboratory and Cell 135 and 202.5 mg / kg body weight. Signalling. These animals have free access to Determination of basic diuresis food and water. For the measurement of basal diuresis, batch Methods 50mg / kg / b/w of oral distilled water (oesophageal gavages) was administered to lot Preparation of the aqueous extract of the 1. Urinary excretion was measured 6H and 24H leaves of Hildegard a barteri after administration. To obtain the aqueous extract of the leaves of Hildegard a barteri To 100 g of powder weighed Determination of diuretic activity using a Sartorius® analytical balance 1L of The methodology used by these authors has distilled water is added, all in a 2L glass flask. been seen and adapted to our laboratory The mixture is brought to boiling with stirring conditions. The principle consists in measuring for 30 minutes on a heating calotte at 60.degree. the volume of urinary excretion in wester rats After cooling, the obtained decoct ate is filtered after giving them by oesophageal gavages 50 ml three times with hydrophilic cotton and filter / kg of body weight of 1.8% NaCl solution and 28 International Journal of Research in Pharmacy and Biosciences V4 ● I3 ● 2017 Impact of Aqueous Extract of Hildegardia Barteri Leaves on Calcium Channel Activity Dependent Voltages then administering them some time after the lateral decubitus, and held by the skin of the EAHb at the respective doses mentioned Above: neck. The pressure of the thumb on the neck, D10; D25; D50; D67, 5; D100; D135 and D202, behind the angle of the jaw, allows compression 5 mg / kg body weight to batches 3-9 of the jugular vein, and therefore a venous stasis respectively. Lot 2 received only Furosemide towards the head, favouring the filling of the (MR), and lot 1 was distilled water. After the retro-orbital sinus. By making a slight traction treatment, each batch being composed of two on the upper eyelid with the index finger, we rats, they are placed (each rat) in metabolic create exophthalmoses facilitating the taking of cages (01 rats per cage). blood by means of tube with hematocrit not heparinised. The end of the tube is slowly For each group, urinary excretion of 6 hours and introduced into the lateral angle of the eye. 24 hours was measured and a blood sample is Progression through the tissues is facilitated by taken 24 hours after treatment on each wester printing a small pipette rotation. As soon as the rat. After placing them each in the metabolic venous plexus is reached, the blood spurts into cages, the following parameters were measured: the per orbital space and ascends by capillary latency (the appearance of the first urine drops action in the tube.
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