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TRADITIONALLY USED MEDICINAL PLANTS FOR WOUND HEALING IN THIRUVALLUR DISTRICT, TAMIL NADU, INDIA

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  • TVM ACADEMY OF HEALTH SCIENCE

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The present study aims to enumerate the ethno-medicinal uses of plants by the Irular communities residing around the Thiruvallur district. The medicinal use of (49) plants belonging to 39 families was identified and recorded by the tribes, along with their botanical identities and methods of drug preparation. The drugs administered locally to heal wounds, including antibiotics, antiseptics, etc., and the necessary information related to the traditional medicinal plants were highlighted in this paper. Wound healing activity is a cellular and biochemical process for restoring the original structure and functions of damaged tissue. The wound may occur from a physical, chemical, thermal, microbial, or immunological insult to the tissues. Various parts of the plants have been in use for several years in tribal communities, traditionally for treating many diseases like skin, colic, sores, cancer, etc. Due to their minimal side effects. The natural agents present in the plants induce wound healing and regeneration from tissue loss by multiple mechanisms. Plant extracts have immense potential for the treatment of wound healing activity. In this review, we focused on the wound healing activity with the pharmacological process of medicinal plants.
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Review Article
TRADITIONALLY USED MEDICINAL PLANTS FOR WOUND HEALING IN THIRUVALLUR
DISTRICT, TAMIL NADU, INDIA
KASINATHAN I. D.1*, UMA S.1, ELUMALAI K.2, KAVITHA MANIVANNAN3, MALATHI RAMASAMY4
1TVM Academy of Health Science, TVM, Nagar, Podaturpet, Pallipat Taluk, Tiruvallur-631208, Tamil Nadu, India. 1School of
Bioengineering, SRM University, Kattankulthur-603203, Tamil Nadu, India. 2Department of Zoology, Government Arts College, Nandanam,
Chennai-600035, India. 3Department of Microbiology, Tharb Camel Hospital, Qatar, India. 4Biotechnology, CDOE, Bharathidasan
University, Tiruchirappalli-620024, Tamil Nadu, India
*Corresponding author: Kasinathan I. D.; *Email: dridkasi@gmail.com
Received: 12 Apr 2024, Revised and Accepted: 03 Jun 2024
ABSTRACT
The present study aims to enumerate the ethno-medicinal uses of plants by the Irular communities residing around the T hiruvallur district. The
medicinal use of (49) plants belonging to 39 families was identified and recorded by the tribes, along with their botanical identities and methods of
drug preparation. The drugs administered locally to heal wounds, including antibiotics, antiseptics, etc., and the necessary information related to the
traditional medicinal plants were highlighted in this paper. Wound healing activity is a cellular and biochemical process for restoring the original
structure and functions of damaged tissue. The wound may occur from a physical, chemical, thermal, microbial, or immunological insult to the
tissues. Various parts of the plants have been in use for several years in tribal communities, traditionally for treating many diseases like skin, colic,
sores, cancer, etc. Due to their minimal side effects. The natural agents present in the plants induce wound healing and regeneration from tissue loss
by multiple mechanisms. Plant extracts have immense potential for the treatment of wound healing activity. In this review, we focused on the
wound healing activity with the pharmacological process of medicinal plants.
Keywords: Medicinal plant, Wound healing, Traditional, Regeneration
© 2024 The Authors. Published by Innovare Academic Sciences Pvt Ltd. This is an open access article under the CC BY license (https://creativecommons.org/licenses/by/4.0/)
DOI: https://dx.doi.org/10.22159/ijcpr.2024v16i4.4086 Journal homepage: https://innovareacad emics.in/journals/index.php/ijcpr
INTRODUCTION
The medicinal plant was used to treat a wide range of illnesses
and accounts for a sizable amount of the global pharma industry
based on the know ledge of different traditional medicines such
as Ayurveda, Siddha, a nd Unani. India has a wide variety of
traditio ns in medicine. Since India is rich in biodiversity of plant
reso urces, about 5000 species were utilized in the Indian system
of folk medicines [1-4]. During the last few decades, there has
been an i ncreasing inter est in medicinal plants and their
traditio nal use [5-9]. People have in-depth knowledge about
medicinal plants from their ancestors through problem-solving
attempts in rural India [10]. Countries with a lower standard of
living adopt therapeutic plants as their backbone. Hence, indigenous
medicines are in great demand throughout the world as a source of
emergency health care and in zero hours, owing to their qualities of
biological and pharmacological activity and cost-effectiveness [11].
For thousands of years, the natural sources of medicinal treatments
from plant-based systems have played an endless role in the
primary health care of 80% of the world’s developing and developed
countries [12]. Ancient people used different parts of the plant-leaf
bark, stem, root, etc.-to treat and prevent many ailments [13].
Wound infections are common in developing countries because of
poor hygienic conditions [14]. In this context, wounds are physical
injuries that result in an opening or breaking of the skin. A technique
for wound healing is essential for the restoration of disrupted
anatomical continuity and disturbed function of the skin [15]. Three
main stages comprise the healing process: the inflammatory phase,
the proliferating phase, and the remodeling phase, which eventually
determines the strength and presence of the mended tissue [16].
Wound healing starts by replacing the damaged tissue with new
tissue. Many biochemical steps take place to repair it. The healing
process involves many steps involving coagulation, inflammation,
granulation tissue formation, matrix formation, remodeling of
connective tissue, and collagenization [17]. In the modern
biomedical sciences, research on wound healing agents is one of the
developing areas. Many traditional practitioners globally, especially
in countries like India and China, have priceless information on
several predominantly known and unknown wild plants for treating
wounds [18]. The potential of Traditional medical practices, which
have been practiced for centuries in Africa and Asia, to treat
disorders related to wound healing is being studied scientifically
[19]. Herbal medicines in wound healing involve disinfection,
debridement, and providing a suitable environment for the natural
wound healing process [20]. Healing involved continuous
interactions between cells and the cell matrix that allowed the
process to proceed in three overlapping phases: the inflammatory
phase (03d), cellular proliferation or proliferative phase (312 d),
and remodeling phase (36 mo) [21, 22], used for medicinal plants
in wound healers. The literature survey depicts that raw materials
for drugs used in altered conditions of wounds such as ulcers,
maggots, syphilitic ulcers, septic wounds, cellulitis, cumulative
ulcers, diabetic carbuncle, and other related disorders were from
natural resources. More than 70% of wound healing pharma
products are plant-based, 20% are mineral-based, and the
remaining contain animal products as their ingredients. Plant-based
materials are used as first aid, coagulants, antiseptics, wound wash,
and removal of pus in infected areas [23]. Several species, including
Centella Asiatica, Curcuma longa, Paeonia, and Suffruticose, are
popular wound healing products used by several cultures and ethnic
groups. The popularity and evidence of continued use indicate that
there are still lessons to be learned from traditional practice. Natural
products and their derivatives are undescribed, unexplored
combinations and compounds that would have a place in the
contemporary therapeutic inventory [24]. The present study focused
on the medicinal plants for wound healing in Thiruvallur dist. by
gathering information from the localities. The pharmacological
processes of medicinal plants.
Study area and ethnobotanical survey
Thiruvallur quarter, geographically latitude 115 and #39; N and
13° 15 and #39; N, longitude 79° 15 and #39; E, and 80° 20E, is
bounded by the Bay of Bengal in the east, the Vellore quarter of
Tamil Nadu and Chittoor, the Nellore quarter of Andhra Pradesh on
the west, and the Kanchipuram quarter in the south. The littoral
region of this quarter is substantially flat, while some areas in
Pallipattu and Tiruttani taluks are undulated and indeed hilly. The
International Journal of Current Pharmaceutical Research
ISSN- 0975-7066 Vo l 16, Issue 4, 2024
K. I. D. et al.
Int J Curr Pharm Res, Vol 16, Issue 4, 1-6
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soil types generally in this quarter are red-calcareous and littoral
alluvial. Sandy soil mixed with soda pop or other alkali is also set up.
The soil set up in the littoral region is of the erinaceous type suitable
for the Casuarina tree. The average downfall of the quarter is 1104.4
mm, of which the northeast thunderstorm contributes to the tune of
690 mm. The average maximum temperature endured this quarter
is 37.9 °C, and the minimum is 18.5 °C. This quarter exhibits both
civic and pastoral characteristics. The total mortal pool deals with
husbandry; this quarter is one of the fastest-developing sections of
Tamil Nadu in terms of industries. The information was collected
through group conversations and interviews with gardeners and
other people. A field note was assigned for each factory account and
given with the following details: binomial name, family, original
name, part used, and remedial uses.
Traditional healers (Local)
Information was compiled about the traditional drugs used for
crack-healing action in the Thiruvallur district. Traditional healers
with practical knowledge of drugs w ere canvassed 25, using
questionnaires, interviews, and conversations in their original
dialect. Indigenous medicament used for promoting crack heal was
gathered from the folk healers and senior citizens and endured
individuals rehearsing native drugs. The knowledge of medicinal
plants among the people of this district leans on beliefs and
compliances. This knowledge has been passed on from generation to
generation but vanishes instantly.
Plants
Sidacordifolia l. Moringaoleifera l. lantana camera l. Aloe vera, Acalypha
indica, Centella asitica, Catharanthus roseus, Anisomeles malabarica l,
Gymnema sylvestre, Eclipa alba l, and Hemidesmus indicas. The
information on these plants was collected by group discussions and
interviews with gardeners and local people. A field note was assigned
for each plant material and documented with the following details
binomial name, family, local name, parts used, and therapeutic uses.
Table 1 represents a list of plant parts utilized in the preliminary
work, A total of 49 plant species have been found in wound healing
treatment in this place, and a comprehensive list will be completed
in survey and sampling. We have depicted enormously used plants
in the traditional medicine of India which have ethnobotanical
references, supporting oral information from local tribes and Vaidas.
Even though traditional medicines offer a safe and inexpensive
approach to treating wounds and burns, they have not received
adequate attention.
Table 1: Medicinal plants with wound healing activity
Plant name
Family
Vernacular name
Part use
Abrusprecatorius linn
Fabaceae
Kunri
Seeds
Acacia arabicaWilld
Mimosaceae
Karuvelam
Leaf, Bark
Acalyphaindica
Euphorbiaceae
Kuppaimeni
Leaf
Achyranthusaspera linn
Amaranthaceae
Naayuruvi
Whole plant
Acoruscalamus linn
Araceae
Vasambu
Root
AdathodavasicaNees
Acanthaceae
Aadaathodai
Leaf
Aeglemarmelos
Rutaceae
Vilvam
Leaf, Stem
Aloe vera linn.
Lilliaceae
Katralai
Leaf
Anisomelesmalabarica (L.) R. Br. Ex. Sims
Lamiaceae
Paeimiratti
Stem
Annonasquamosa linn.
Annonaceae
Sitapzhalam
Root, leaf
Azadirachtaindica A. Juss.
Meliaceae
Vemmpu
Leaf
Bambusabambos (L.) Voss.
Poaceae
Moongil
Stem, Root
Bauhinia purpurea linn.
Caesalpeniaceae
Mandarai
Flower, Fruit
Blepharismaderaspatensis (L.) Roth.
Acanthaceae
Vettukaayapachilai
Leaf
Calotropisgigantea (Linn.) R. Br. ex Ait
Asclepiadaceae
Erukku
Leaf
Catharanthusroseus l. G. Don
Apocynaceae
Nithyakalyani
Leaf
Centellaasiatica (Linn.) Urban.
Apiaceae
Vallaarai
Whole Plant
Citrus medica linn.
Rutaceae
Narthankai
Fruit
Cocciniaindica WandA.
Cucurbitaceae
Kovvai
Whole Plant
Cynodondactylon Pers.
Poaceae
Arugampullu
Whole plant
Daturametel linn.
Solanaceae
Oomatthai
Whole Plant, leaf
Dolichosbiflorus linn.
Fabaceae
Kollu
Whole Plant, seeds
Eclipta alba (Linn.) Hassk.
Asteraceae
Karisalaankanni
Whole Plant
EmlicaofficinalisGaertn.
Euphorbiaceae
Nellikkaai
Fruit
Erythrinaindica lam.
Fabaceae
Kaliyanamurunkkai
Stem, Seed, leaf
Euphorbia hirta linn.
Euphorbiaceae
Ammanphachharisi
Leaf
Ficusbenghalensis linn.
Moraceae
Alamaram
Bark, leaf, Seed
Ficusreligiosa linn.
Moraceae
Araasamaram
Whole Plant
Gymnemasylvestre R. Br.
Asclepiadaceae
Shirukurinjan
Leaf
Hemidesmusindicus (L.) R. Br.
Asclepiadaceae
Nannaari
Root
Jatrophacurcus linn.
Euphorbiaceae
Kattuammanaku
Leaf
Lantana camara linn.
Verbenaceae
Unnicheddi
Whole Plant
Madhukaindica J F Gmel.
Sapotaceae
Ielupai
Whole Plant
Meliaazedarach linn.
Meliaceae
Malaivemmpu
Leaf
Mimosa pudica linn.
Mimosaceae
Thottasurungi
Whole Plant
Moringaoliefera lam.
Moringaceae
Murungai
Whole Plant
Murryayakoenginii (Linn.) Spreng.
Rutaceae
Karuveppilai
Whole Plant, leaf
Musa paradisiaca linn.
Musaceae
Vaazhai
Whole Plant
Neriumindicum Mill.
Apocynaceae
Arali
Root
PlectranthuscoleoidesBenth.
Lamiaceae
Omavallichedi
Leaf
Pongamiaglabra Vent.
Fabaceae
Pungam
Leaf, Seeds
Portulacaquadrifida linn.
Portulacaceae
Serupasalaikeerai
Leaf
Psidiumguajava linn.
Myrtaceae
Koyya
Leaf, Fruit
Sidacordifolia (Linn)
Malvaceae
Nillathuthi
Root
Solanumnigrum l.
Solanaceae
Manathakkali
Leaf
Syzygiumcuminii (Linn.) Skeels
Myrtaceae
Naval
Stem, Seeds
Vitexnegundo linn.
Verbeneceae
Nochi
Leaf
Tridoxprostrata l.
Asteraceae
Vettukayapundu
Leaf
RhinacanthuscommunisNees
Acanthaceae
Naagamalli
Root, leaf, Seeds
K. I. D. et al.
Int J Curr Pharm Res, Vol 16, Issue 4, 1-6
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Most of these studies involve erratic screening of plants or
extracts for healing activity, while some of the plants enumerated
in table No. 1 have been pharmacologically validated for their
venture, viz. (Plate 1).
Plate 1: Plant species selected for review
K. I. D. et al.
Int J Curr Pharm Res, Vol 16, Issue 4, 1-6
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Local traditional healers use different parts of plants viz., root, stem,
leaf, flower, fruit, seed, rhizome, tuber, bark, pulp, latex, and
gums/resin as a source of medicine. Distribution analysis of many
plant parts used for wound healing and bioactive principle revealed
that plant parts viz., Flower (1), Fruit 4, leaf 25, Root 8, Seed 7, Stem
6, Whole plant 14.
Family wise distribution analysis of the plants used by the tribal
healers revealed that medicinal plant species Were distributed across
39 families viz., Acanthaceae 3, Amaranthaceae 1, Annonaceae (1),
Apiaceae (1), Apocynaceae (2), Araceae (1), Asclepiadaceae (3),
Asteraceae (2), Caesalpeniaceae (1), Cucurbitaceae (1), Euphorbiaceae
(4), Fabaceae (4), lamiaceae (2), liliaceae (1), Malvaceae (1), Meliaceae
(2), Mimosaceae (2), Moraceae (2), Moringaceae (1), Musaceae (1),
Myrtaceae (2), Poaceae (2), Portulacaceae (1), Rutaceae (2),
Sapotaceae (1), Solanaceae (2), Verbenaceae (2). Most of the remedies
were obtained from plants belonging to families followed by
Euphorbiaceae (4), Fabaceae (4), Acanthaceae (3), Asclepiadaceae (3),
Apocynaceae (2), Asteraceae (2), lamiaceae (2), Meliaceae (2),
Mimosaceae (2), Moraceae (2), Myrtaceae (2), Poaceae (2), Rutaceae
(2), Solanaceae (2), and Verbenaceae (2). In the study, 11 families were
represented by a single species (table 2) and (fig. 1).
Local people are using leaves (26) to cure various diseases, followed
by whole plants (14), roots (7), seeds (7), flowers (1), fruit (4), bark
(2), and stem (2). The most enormously used plant part in the
preparation of medicine for various ailments is the leaf (52%) it is
crushed to extract the juice and applied, followed by the whole plant
(28%), root (14%), seed (14%), fruit (8%), flower (2%), bark (4%)
and stem (8%) (fig. 2).
Table 2: Family-wise distributions of plants
Family
Number of plants
Fabaceae
4
Mimosaceae
2
Euphorbiaceae
4
Amaranthaceae
1
Araceae
1
Acanthaceae
3
Rutaceae
3
Lilliaceae
1
Lamiaceae
2
Annonaceae
1
Meliaceae
2
Poaceae
2
Caesalpeniaceae
1
Asclepiadaceae
3
Apocynaceae
2
Apiaceae
1
Cucurbitaceae
1
Solanaceae
2
Asteraceae
2
Moraceae
2
Verbenaceae
2
Moringaceae
1
Sapotaceae
1
Musaceae
1
Portulacaceae
1
Myrtaceae
2
Malvaceae
1
Fig. 1: Percentage distribution analysis of remedies obtained from different plant parts
Fig. 2: Family-wise distributions of ethnomedicinal plants used by people in Thiruvallur district
K. I. D. et al.
Int J Curr Pharm Res, Vol 16, Issue 4, 1-6
5
Traditional knowledge of herbal medicine is disappearing which
should be conserved and will give the baseline information for the
chemist to discover new drugs. This is one of the steps taken towards
documenting treasures of indigenous knowledge on the wound-
healing property of medicinal plants. There is an urgent need for the
proper collection of medicinal plants from the Thiruvallur district.
In ancient times, phytotherapy has been able to tr eat cutaneous
wounds efficiently, reduce the onset of infections, and minimize the
usage of antibiotics that cause critical antibiotic resistance. In
diverse animal experimental models, secondary plant metabolites or
active chemicals are the active agents that stimulate the process of
wound repair. The most significant and specific examples include
Asiatic acid, Madecassic acid, and Asiaticoside from Centella Asiatica
[26-28] curcumin from Curcuma lo nga. There are a remarkable
number of wound-healing botanicals that are widely used in the
Northern Hemisphere, including Achiella millefolium, Aloe vera,
Althaea officinalis, Calendula officinalis, Matricaria chamomilla,
Curcuma longa, Eucalyptus, Jojoba, plantain, pine, green tea,
pomegranate, and Inula [29]. Some studies have advocated for a
combination of honey wound dressings alongside antibiotics in
instances where sepsis is a concern. Combination therapy resulted in a
synergistic response in scenarios where antibiotic resistance was
previously observed [30, 31] (Jenkin et al., 2012, liu et al., 2015).
Phytochemical content is to resolve their remedial features in wound
repair, plant-derived substances were considered for their wound-
healing activity as flavonols, flavanones, isoflavones, flavanols,
flavonolignans, proanthocyanidins [32], cardiac glycosides, saponins,
steroids, and tannins [33], β-glucans [34], bromelain [35], curcumin
[36]. Quercetin and rutin are flavonoids with strong antioxidant,
antimicrobial, and anti-inflammatory effects but limited water
solubility. It was revealed that incorporating quercetin and rutin into
polycaprolactone and chitosan oligosaccharides to form a new
bioactive electrospun nanofiber membrane exhibited superior efficacy
among all nanofiber membranes for burn injuries [37]. It was
disclosed that different botanicals and medicinal plants are widely
used as a topical treatment for wound repairing, such as aloe vera,
banana leaves [38], turmeric, Centella Asiatica, Rosmarinus officinalis,
and Calendula officinalis [39].
Natural products such as plant extracts and other plant-derived
products and their phytochemicals assist in managing inflammatory
diseases, exert antimicrobial effects, and might aid skin tissue
regeneration [40, 41]. The wound itself is a rupture of the epithelial
integrity of the skin that might be caused by violence or trauma. The
rupture of epithelial integrity is trailed by disruption of the structure
and function of underlying normal tissue [42]. They could remove
oxidative stress and lower inflammation [43]. The wound-repairing
ability of different plant extracts and their actives is proven in
wound-curing animal models. Such plants improved collagen
deposition, the proliferation of epithelial cells, and angiogenesis in
diabetic and nondiabetic animal models [44]. Different types of
plants are widely used in managing wounds and injuries from
previous scientific research [45]. This process occurs through
stimulating autolytic debridement, inducing an osmotic response,
drawing water from the cells, and subsequently increasing the
hydration at the wound site; this hydration needs to soften the
slough at the wound site, and along with the denaturation of fibrin, it
allows the slough to detach [46]. Observing nature and perception of
their traditional knowledge about medicinal properties pave the
way for treating diseases [47]. A combination of many parts of the
same plant or parts from different plants or collective species of
plants was used in wound healing, as cited [48]. Many herbs and
plants were utilized as medicine in dietary forms. There is an
increased awareness of using traditional plants to cure ailments.
Due to the cost and side effects of other drugs, there is an urge for
documentation of the medicinal plants with indigenous knowledge
[49]. With the help of local communities with diverse knowledge of
this data, the user-friendly database can be preserved and used for
future generations.
CONCLUSION
Traditional medicinal plants are used by the public today because
they have no side effects or chemical basis. The majority of these
plants are utilized as the raw material for drugs. Wound healing is a
biological process that starts with trauma and soar formation. The
present review revealed that nature provides a vast number of
plants that show significant wound-healing activity.
Several parts of the plant have interesting anticancer, antimicrobial,
antioxidant, anti-inflammatory, immunomodulatory, and anti-
malarial properties. Consequently, further studies on this plant
should be considered for research in photochemistry, wound
healing, antimicrobial activity, antioxidants, pharmacology, and use
in pest control.
FUNDING
Nil
AUTHORS CONTRIBUTIONS
All the authors have contributed equally.
CONFLICT OF INTERESTS
The authors declare no conflict of interest
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... The presence of additional active chemicals is associated with oxidative stress in cardiovascular disorders, including hypertension and heart failure. Moreover, its cardioprotective impact is associated with its anti-atherosclerotic, antihyperlipidemic, antioxidant, antiapoptotic, and anti-inflammatory properties in both in vitro and in vivo settings [13][14][15][16][17]. ...
... For the treatment of neurological and digestive ailments, C. asiatica has demonstrated efficacy in wound healing, anti-cancer, and anti-inflammatory capabilities. Due to its capabilities as an antifibrotic, antiapoptotic, and antioxidant agent [16,[41][42][43]. C. asiatica has proven its efficacy as a cardioprotective agent for cardiomyocytes [38,44,45]. ...
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They included preliminary screening of dichloromethane: methanolic extract of Centella asiatica against human pathogenic bacteria including Salmonella typhi ATCC 19430, Escherichia coli ATCC 25922, Shigella sonnei ATCC 25931, Bacillus subtilis ATCC 21332, and Staphylococcus aureus ATCC 25923 using agar disc diffusion, broth microdilution method, and time-kill kinetics with tetracycline as a positive control. Phytochemical screening was carried out to determine the different classes of compounds in the crude extracts. Data were analyzed using one way ANOVA and means separated by Tukey’s test. Dichloromethane: methanolic extract of Centella asiatica was screened against the selected bacterial strains. Time-kill kinetic studies of the extracts showed dose- and time-dependent kinetics of antibacterial properties. Phytochemical screening of the DCM-MeOH extract revealed the presence of alkaloids, flavonoids, phenolics, terpenoids, cardiac glycosides, saponins, steroids, and tannins. The present study indicates that the tested plant can be an important source of antibacterial agents and recommends that the active phytoconstituents be isolated, identified, and screened individually for activities and also subjected further for in vivo and toxicological studies. 1. Introduction Infectious diseases are a major cause of morbidity and mortality worldwide [1–3]. The use of antibiotics to control these diseases has led to the emergence of antibiotic-resistant pathogens and, therefore, the need for alternative medicines [4, 5], such as medicinal plants [6], which are easily available, affordable, and efficacious with minimal side effects [7, 8]. The problem of antibiotic resistance is confounded by the emergence of “superbugs” such as Staphylococcus aureus, Mycobacterium tuberculosis, Enterobacter species, Klebsiella pneumoniae, Acinetobacter baumannii, and Pseudomonas aeruginosa that are resistant to multiple classes of antibiotics [9, 10]. In addition, many bacterial pathogens form biofilms when they come in contact with a hydrated surface [11]. The biofilms are extracellular matrices that enclose aggregates of bacterial cells on surfaces [11, 12] and are a major problem in clinical therapeutics since microbial communities adhered to surfaces are physiologically distinct from planktonic cells of the same bacteria [13]. The formation of bacterial biofilms has been shown to increase resistance to antibiotics by up to 1000-fold [14]. In bacterial culture, a growth medium is required which is a culture media either in a solid, liquid, or semisolid form designed to support the growth of bacteria. A culture media used for general cultivation and maintenance of bacteria contains a carbon source, water, salts, amino acids, and nitrogen [15]. About 80% of the population living in developing countries uses medicinal plants for their health care needs due to their inability to maintain a steady supply of conventional medicines [7, 16]. In some cases, herbal drugs are used in combination with conventional drugs if the patient feels that the prescribed medicines are ineffective [17]. The World Health Organization (WHO) emphasizes the need to compliment conventional treatment with herbal medicines [18], and through its sensitization and mobilization programs, African countries have been encouraged to begin serious advancements in herbal medicine use in order to sustain provision of healthcare and ensure continuity of culture [16]. Exploiting plant extracts with known antibacterial activities is significant in managing various infectious diseases [19]. Bacterial resistance to currently used antibiotics necessitates the search for effective therapeutic agents. The use of medicinal plants presents a great potential as a source of antimicrobial compounds against resistant pathogenic microorganisms [20]. Medicinal plants have been used for a long time [21] and have a track record of being effective, safe, and cheap to use [22]. For instance, Glycyrrhiza glabra has been used for the management of respiratory ailments such as coughs, sore throat, and bronchitis [23] and Mahonia aquifolium has been used in skin infection management [24], while Achillea millefolium and Arctostaphylos uva-ursi are used to manage urinary tract infections [25, 26]. A large number of people in developing countries depend on medicinal plants as their primary source of medication [27]. Centella asiatica has been utilized traditionally for the treatment of infectious diseases among the Abagusii community in Kenya, with limited scientific documentation of its dichloromethane: methanolic extract antibacterial activities. This study aimed at screening the dichloromethane: methanolic extract of Centella asiatica for antibacterial activities against selected bacterial pathogens. Centella asiatica is used to treat wounds, mental and neurological disorders, atherosclerosis, microbial infections, and cancer [28]. It is also used in the treatment of inflammations, diarrhea, asthma, tuberculosis, and various skin lesions and ailments such as leprosy, lupus, psoriasis, and keloid. It is reported to possess ulcer-preventive, antioxidant, and antidepressive effects and improves venous insufficiency. An alcoholic extract of the whole plant showed antiprotozoal activity against E. histolytica [28], while a chloroform extract of the whole plant showed activity against Bacillus subtilis, Staphylococcus aureus, Bacillus cereus, Escherichia coli, Salmonella typhi, and Shigella dysenteriae. Centella asiatica L. is a member of the family Umbeliferae; the photograph of the plant is presented in Figure 1. It is a perennial herbaceous creeper that grows in moist areas and is distributed widely in tropical and subtropical countries [29]. It has a faint aroma with white to pink flowers and 1–3 leaves of sheathing base from each node. The leaves are smooth with parallel lines on the surface and roots at the stem nodes. The fruits are about 2 inches long and spherical shaped with a thick pericarp. Its seeds consist of a pedulous embryo that looks compressed [29–31]. Vernacular names include English- Indian pennywort, Hindi- Gotukolu, and Chinese- Fo-ti-tieng, while in Kenya, it is referred to as Mungutab beliot ne sing’ortot (nandi) and Enyonyo engare (Kisii).
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Cutaneous wound healing is the process by which skin repairs itself. It is generally accepted that cutaneous wound healing can be divided into 4 phases: haemostasis, inflammation, proliferation, and remodelling. In humans, keratinocytes re-form a functional epidermis (reepithelialization) as rapidly as possible, closing the wound and reestablishing tissue homeostasis. Dermal fibroblasts migrate into the wound bed and proliferate, creating “granulation tissue” rich in extracellular matrix proteins and supporting the growth of new blood vessels. Ultimately, this is remodelled over an extended period, returning the injured tissue to a state similar to that before injury. Dysregulation in any phase of the wound healing cascade delays healing and may result in various skin pathologies, including nonhealing, or chronic ulceration. Indigenous and traditional medicines make extensive use of natural products and derivatives of natural products and provide more than half of all medicines consumed today throughout the world. Recognising the important role traditional medicine continues to play, we have undertaken an extensive survey of literature reporting the use of medical plants and plant-based products for cutaneous wounds. We describe the active ingredients, bioactivities, clinical uses, formulations, methods of preparation, and clinical value of 36 medical plant species. Several species stand out, including Centella asiatica , Curcuma longa, and Paeonia suffruticosa , which are popular wound healing products used by several cultures and ethnic groups. The popularity and evidence of continued use clearly indicates that there are still lessons to be learned from traditional practices. Hidden in the myriad of natural products and derivatives from natural products are undescribed reagents, unexplored combinations, and adjunct compounds that could have a place in the contemporary therapeutic inventory.
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Background Flavonoids are a class of compounds with a wide variety of biological functions, being an important source of new products with pharmaceutical potential, including treatment of skin wounds. Purpose This review aimed to summarize and evaluate the evidence in the literature in respect of the healing properties of flavonoids on skin wounds in animal models. Study design This is a systematic review following the guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. Methods This was carried out through a specialized search of four databases: PubMed, Scopus, Web of Science and Embase. The following keyword combinations were used: "flavonoidal" OR "flavonoid" OR "flavonoidic" OR "flavonoids" AND "wound healing" as well as MeSH terms, Emtree terms and free-text words. Results Fifty-five (55) articles met the established inclusion and exclusion criteria. Flavonoids presented effects in respect of the inflammatory process, angiogenesis, re-epithelialization and oxidative stress. They were shown to be able to act on macrophages, fibroblasts and endothelial cells by mediating the release and expression of TGF-β1, VEGF, Ang, Tie, Smad 2 and 3, and IL-10. Moreover, they were able to reduce the release of inflammatory cytokines, NFκB, ROS and the M1 phenotype. Flavonoids acted by positively regulating MMPs 2, 8, 9 and 13, and the Ras/Raf/MEK/ERK, PI3K/Akt and NO pathways. Conclusion Flavonoids are useful tools in the development of therapies to treat skin lesions, and our review provides a scientific basis for future basic and translational research.
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Burn injury has posed devastating burdens on the public health due to its inevitable damage to the skin structure resulting in the increased risk of infection. Therefore, it is highly demanding to develop efficacious antibacterial wound-healing dressing. Despite the favourable wound-healing activities, the curative efficacy of phytochemical compounds of quercetin (Qe) and its derivatives is limited by their poor water solubility. Here, we have fabricated a novel electrospun nanofiber membrane (ENM) consisting of polycaprolactone (PCL), chitosan oligosaccharides (COS), and Qe/Rutin (Ru) as the potential bioactive dressing for wound healing. The incorporation of chitosan oligosaccharides (COSs) in the PCL scaffold at the optimized molar ratio not only contributed to the improved hydrophilicity and water absorption performance of the ENM but effectively increased the specific surface area of the formed nanofibers. In particular, the antioxidant and antibacterial activities of the Qe/rutin-loaded nanofiber membranes were tested, which revealed that the PCL-COS-Qe membrane exhibited superior performance among all nanofiber membranes. Therefore, the developed PCL-COS-Qe/Ru nanofiber membranes hold enormous potential as healthcare products, such as wound dressings for burn injuries.