WHO recommends that all countries experiencing resistance to
conventional therapies should use combination therapies, preferably those
containing artemisinin derivatives for P. Falciparum Malaria, called ACTs
(Artemisinin Combination Therapies), which now appears to be the only known
reliable treatment for malaria. However, lately resistance to ACT has been
observed in Thailand-Cambodia border areas. Interestingly, previous incidences
of parasite resistance for other anti-malarial substances have also been noted
around the same region.
International funding available for malaria prevention,
including mosquito-control strategies, and for treatment is estimated at $1.1
billion in 2008, but resource needs are estimated to be much higher exceeding
$5 billion per year. International efforts to address malaria have intensified
in recent years and the U.N. Millennium Development Goals include targets to
reduce the impact of malaria by 2020.
Notwithstanding the malaria control strategies reported to
have been widely applied such as, free distribution of mosquito nets in malaria
endemic areas and increased level of funding in public and private sector
directed at new drugs and vaccines, the world is still awaiting an inexpensive
and effective treatment for malaria, acceptable by all and sundry.
Using Artemisinin to Fight Malaria Scourge
Artemisia Annua containing Artemisinin is primarily
available in China, Vietnam and to some extent in East Africa. Besides the
limited availability of the plant itself, the artemisinin content is also low,
rarely above 0.8% on large scale basis.
Since the isolation and characterization of artemisinin in
China, the pharmaceutical initiatives have been based on using only the pure
artemisinin or its derivatives, either as a mono-therapy, or as ACT, i.e.,
Artemisinin combined with other previously developed “synthetic” anti-malarial
chemicals. This to my belief is a development that will completely hinder the
effectiveness of the project. Because of the over 300 phyto-chemical components
contained in Artemisia plant, at least 10 are anti-malaria agents and the rest still very beneficial to well being of human body including, vitamins and minerals, Micro and Micro nutrients. This is what
makes Artemisia plant on its own a combined therapy. So, one will wonder on what
basis should the additional use of any “synthetic” chemical be combine with
Artemisinin, given the fact that artemisinin itself is an extract of artmisia. This is one major factor that has provided some weaknesses (like bacterial resitance to the drug) for the treatment of malaria scourge.
However, apart from development of anti-malarial vaccines on
going for the past 25 years, researches around the world has been focused on
chemical and bio-synthesizing of the artemisinin compound, and to improve the
specie to produce higher than average of 1.5% to 2.5 % or higher artemisinin
content, which has been successful to a large extent. However, its impact has
not yet been accessed.
Although it is recognized that the stereo-specificity of the
artemisinin molecule makes total synthesis very difficult and may very well not
be adaptable to industrial productions at acceptable price levels, the
initiative is still being pursued aggressively. In contrast, the Phytochemicals
investigation of Artemisia has revealed an ‘abnormally’ wide range of
endoperoxides and hydroperoxides similar to artemisinin, many of which have not even been tested for their anti-malarial
activity?
It is possible that the pharmaceutical initiatives are
focused on products that can be patented. In the meanwhile promising
non-patentable solutions like the use of Raw Artemisia Annua tea (leaf Powder)
or capsule (powder) are set aside while malaria continues to be the scourge of
Sub-Saharan Africa. However, it is a known history that Artemisia Annua tea is
being used in China to treat malaria for well over 2000 years.
It is also to the understanding of World Health Organization
that other humanitarian organization like RITAM and ANAMED are working round
the clock with possibly no funds at their disposal to work for entire humanity
to get over malaria scourge ravaging the undeveloped world, Africa inclusive.
The politics behind “Roll Back Malaria (RBM)” goes beyond under-developed
worlds and that is why WHO will always be ready to discourage other well
meaning organizations willing to permanently Roll Back Malaria for the under-develop
worlds.
The future of artemisinin
Despite much research, artemisinin remains the only known
natural product to contain a 1,2,4 -trioxane ring, and Artemisia plant continues
to be its only known source. Although micro propagation of Artemisia can be
easily accomplished, it is highly unlikely that this method will yield
commercially viable artemisinin.
It appears that wild or field-cultivated Artemisia will be
the only viable option for artemisinin in the foreseeable future. Therefore the
requirement for increasing acreage under cultivation is of vital importance
just as the need for improving the quality of the plant, as well as research
for alternate solutions.
A Not-so-unique Approach to Development of Treatment for Malaria using Artemisinin compound
Several issues are related to pure artemisinin or its
derivatives as a mono-therapy or as ACT, such as:
■ Short shelf life
■ Special storage requirements
■ Lower intestinal absorption
■ Dietary considerations unlikely to be met in majority of malaria
endemic areas
■ Unsuitability for high risk populations: children under 5 years and
pregnant woman
Besides the above adverse conditions, the primary
shortcoming is due to ignoring potential therapeutic value of other
endo-peroxides and hydro-peroxides contained in Artemisia plant in favour of
selective extraction of artemisinin.
Following from the above assessment, a further three
fundamental criterions were included:
1. The treatment
should be FULLY EFFECTIVE with rapid resolution of symptoms for the entire
population range including those at high levels of risk
2. The treatment
should be AFFORDABLE & ACCESSIBLE worldwide to all under risk.
3. The treatment
should have NO SIDE EFFECTS.
For contributions, comment and enquiries on this topic and purchase of our Artemsia and Moringa products, please contact the writer of this blog through the comment box below or on phone: +2348024239713, +2348037409343, +2348055842307
For contributions, comment and enquiries on this topic and purchase of our Artemsia and Moringa products, please contact the writer of this blog through the comment box below or on phone: +2348024239713, +2348037409343, +2348055842307
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