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(12) United States Patent (10) Patent No.: US 8,383,166 B2 Kanaujia Et Al

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(12) United States Patent (10) Patent No.: US 8,383,166 B2 Kanaujia Et Al USOO8383166B2 (12) United States Patent (10) Patent No.: US 8,383,166 B2 Kanaujia et al. (45) Date of Patent: Feb. 26, 2013 (54) STABLE HYDROPHOBICTOPICAL HERBAL 2005/O152996 A1 7, 2005 Butler FORMULATIONN 2005/O181077 A1 8, 2005 Asiedu et al. 2005/0250805 A1 11/2005 Kannan et al. 2007/O122498 A1 5/2007 Reddy et al. (75) Inventors: Parijat Kanaujia, Bangalore (IN); 2007/0231415 A1 * 10/2007 Reddy et al. .................. 424,727 Rajan Balakrishnan, Chennai (IN); 2008/0269308 A1* 10, 2008 Farber ........................... 514,390 Jayashree Rajan, Chennai (IN); OTHER PUBLICATIONS Shivaraj Basavaraj Katageri, Bangalore (IN) Gopi Radha AK. Siddha Herbs Exclusively Used in Skin Diseases, Apr. 12, 2006, http://openmed.nic.in/1467/01/skin herbs-gopi (73) Assignee: Sequent Scientific Limited, Bangalore radha.pdf. Agasthiyar vaitha kaviyam, 1500, Pub: Rathina Nayakar & Sons, (IN) Thirumangal vilakku press, Chenna (1952) pp. 57-58 (with TKDL English Translation). (*) Notice: Subject to any disclaimer, the term of this Mohammad, Najmul Qaraabaadeen Najm-al-Ghani (20th Century patent is extended or adjusted under 35 AD). Munshi Nawal Kishore, Luckno, (Second Edition) 1928 AD U.S.C. 154(b) by 126 days. (with TKDL English translation). Therayar Thailavarukka Churukkam, Ed. Subramanya Pandithar, (21) Appl. No.: 12/745,858 Pub: Devaraja Nayagar, (1958) (With TKDL English Translation). Kandasamy Athmarakshaamirtham, Pub: Ilakkana Achagam, Chen (22) PCT Filed: Dec. 3, 2008 nai (1879) (with TKDL English Translation). Mohammad, Azam Muheet Azam, vol. IV (Part II) (19th century (86). PCT No.: PCT/N2O08/OOO808 ADI, Marba Nizami, Kanpur. 1895 AD). Pandita Narahan, Rajanighantauh-Edited with Hindi Commentary S371 (c)(1), by Indradeo Tripathi; krishnadas Academy, Varanasi, Edn. 2nd 1998 (2), (4) Date: Jun. 2, 2010 (with TKDL English translation). Yamamura et al., “Antihistaminic Falvones and Aliphatic Glycosides (87) PCT Pub. No.: WO2009/084032 from Mentha Spicata' Phytochemistry, vol. 48, No. 1, pp. 131-136 (1998). PCT Pub. Date: Jul. 9, 2009 Phytosterols, Phytostanols and Their Esters, New Specifications pre pared at the 69th JECFA (2008). (65) Prior Publication Data US 2010/O2551.31 A1 Oct. 7, 2010 * cited by examiner (30) Foreign Application Priority Data Primary Examiner — Michael Meller (74) Attorney, Agent, or Firm — Kramer & Amado, P.C. Dec. 3, 2007 (IN) ........................... 2873/CHFA2007 (57) ABSTRACT (51) Int. Cl. Disclosed herein is stable topical herbal composition, useful AOIN 65/00 (2009.01) for the treatment of specific skin conditions, such as, includ (52) U.S. Cl. ....................................................... 424f725 ing, but not limited to, psoriasis, eczema, dermatitis, inflam (58) Field of Classification Search ........................ None mation, pigmentation, extreme dry skin and other skin con See application file for complete search history. ditions requiring therapeutic intervention, wherein the said topical herbal composition comprises, oil extract of Wrightia (56) References Cited tinctoria in combination with hydrophobic excipients and other functional excipients, such as emulsifying agent, pre U.S. PATENT DOCUMENTS servatives, humectant and anti oxidant. 5,858,372 A 1, 1999 Jacob 7,635,494 B2 * 12/2009 Chauhan et al. .............. 424,725 17 Claims, No Drawings US 8,383,166 B2 1. 2 STABLE HYDROPHOBC TOPCAL HERBAL filtered water and then sliced to smaller pieces. The cut leaves FORMULATIONN are combined with equal part of purified or filtered water and this combination is mixed in a mechanical churner for a TECHNICAL FIELD OF INVENTION specific time. The combination forms the slurry wherein the slurry is transferred to holding pans having greatest practical The present invention relates to herbal medicaments for Surface area which is exposed to light source for specific time. topical application. More particularly, the invention relates to Concentrated slurry is obtained after the exposure of slurry to formulations comprising an herbal extract from species light source for specific time duration. This concentrated Wrightia tinctoria for the treatment of skin diseases such as slurry is further processed to remove any particle aggregates psoriasis, eczema, dermatitis, inflammation, pigmentation, 10 Such as leaf stock to obtain the medicament. extreme dry skin and other skin conditions requiring thera U.S. Pat. No. 5,858,372 discloses a hydrophilic ointment peutic intervention. The herbal extract is oil-based and the composition comprising of irradiated latex, extracted from formulation is prepared in a hydrophobic excipient base for the leaves of Wrightia tinctoria, water, urea and polyethylene improved stability and for enhanced results. glycol. The drawback of using a hydrophilic base or a hydro 15 philic composition is that it absorbs water from skin leaving BACKGROUND OF INVENTION the skin dry or dehydrated. This property can adversely affect the psoriatic condition. Moreover, aqueous herbal extracts Psoriasis is a chronic skin disease which progresses gradu when used with hydrophilic excipients precipitates the medi ally, the main signs and symptoms of which are papulosqua cament thereby adversely affecting the stability of the formu mous and itching. Psoriasis includes the presence of Small lation. elevations of the skin that may be characterized as elevated To overcome above mentioned problems associated with red lesions, plaques or pustules on the skin which eventually the use of hydrophilic topical formulation, prepared from result in silvery scales. These silvery scales and plaque are the aqueous extract of Wrightia tinctoria, a need for a stable result of accelerated epidermal proliferation and the meta hydrophobic pharmaceutical composition for the treatment of bolic activity and proliferation of capillaries in the dermal 25 skin diseases such as psoriasis, eczema, dermatitis, inflam region and the invasion of the dermis and epidermis by mation, pigmentation and extreme dry skin was felt. There inflammatory cells. More specifically, the capillaries in the fore, it is an object of the invention to provide a stable phar dermal region become tortuous and dilated as well as Suffer maceutical composition comprising nontoxic herbal extract an inflammatory reaction causing the skin to redden. from species of Wrightia tinctoria in hydrophobic base The exact mechanism which triggers the abnormal cell 30 thereby providing high storage stability, improved efficacy, proliferation is not known, though it is believed that there may devoid of any dehydrating effect as well as without any irri be biochemical stimuli and environmental factors. The sever tation to the skin. ity and course of psoriasis can vary greatly depending on the individual, but in general this chronic skin condition recurs SUMMARY OF THE INVENTION throughout the life of the individual with varying intervals of 35 one month to many years. In accordance with the above object, the invention provides The formulations to be used are limited to the most com a topical herbal formulation useful for treatment of specific mon preparations such as, Solutions, creams, and salves, in skin diseases, wherein an oil extract is prepared and formu which, the manner of application for the dermatherapy is lated using hydrophobic excipients for better stability and practically predetermined. Historically, psoriasis has been 40 enhanced efficacy. treated topically with coal tar derivatives as well as salicylic The invention further provides a process for preparation of acid with limited success. Corticosteroids and other similar the oil extract of the herb as well as topical herbal composi drugs have been found effective for serious cases of psoriasis. tions thereof, based on pharmaceutically acceptable hydro Unfortunately many of these drugs produce serious side phobic excipients. effects, and in Some cases once the drugs are discontinued, the 45 psoriasis recurs with marked exacerbation. DETAILED DESCRIPTION OF THE INVENTION The Wrightia tinctoria R. Brown var. laevis is a tree which can grow up to 40 meters tall and has a dark gray bark. The The invention will now be described in detail in connection stalk at which the leaf is attached is approximately 5-7 mm with certain preferred and optional embodiments, so that long Supporting an oblong leafblade. The tree can be com 50 various aspects thereof may be more fully understood and monly found growing in mountain forests and Valley thickets appreciated. However, these embodiments may be consid from an elevation of 200 to 1000 meters. The tree is native to ered as not self-limiting, but incorporated herein as typical India, Indonesia, Laos, Malaysia, Myanmar, Philippines, examples of the invention in its various and diverse options. Thailand, Vietnam, and Northern Australia. Within the Thus, the present invention provides stable topical herbal regions where the plant is found the indigenous population 55 composition, useful for the treatment of specific skin condi has used the entirety of the plant for various reasons. Such tions, such as, including, but not limited to, psoriasis, eczema, uses include, utilizing the roots and leaves for the treatment of dermatitis, inflammation, pigmentation, extreme dry skin and injury and cuts, the fruits to cure pulmonary tuberculosis, and other skin conditions requiring therapeutic intervention, extracting a blue dye from the leaves. comprising an oil extract of Wrightia tinctoria in combina 60 tion with hydrophobic base and other functional excipients, RELATED PRIOR
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