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International Journal of Pharmacognosy & Chinese Medicine Research Article 35 min read

Plant Based Nanoformulation as an Alternative Phytotherapeutics to Regulate Rheumatoid Arthritis a Review

Yadav P, Gupta T* and Nayak A*
* Corresponding author
ISSN: 2576-4772  10.23880/ipcm-16000247  Received: May 01, 2023  Published: September 12, 2023
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Keywords
Arthritis Rheumatoid Arthritis Phytochemicals Nanoformulations
Abstract

Rheumatoid arthritis (RA) is indeed a severe autoimmune condition characterized by chronic inflammation of the joints. It is known to cause pain, stiffness, swelling and eventually, joint deformity. Phytochemicals, which are biologically active compounds found in plants, have shown promise in the management of arthritis and the treatment of inflammatory, autoimmune and infectious disorders. Thus, the phytochemicals derived from plants have been used to treat autoimmune diseases like RA, and their pharmacological effects have been recognized for a long time. However, despite a wealth of scientific data supporting their medicinal potential, phytochemicals are often overlooked in mainstream medicine. One approach to enhance the effectiveness of phytoconstituents is through the use of nanomedicine. Nanomedicine involves formulating drugs at the nanoscale to improve their bioavailability, stability, and biotransformation. By using nanotechnology, phytoconstituents can be encapsulated in solid nanoparticles, which can enhance their therapeutic effects. It has shown that drug-loaded solid nanoparticles are more effective in reducing arthritic signs and symptoms. The physicochemical characteristics of these nanoformulations, including their drug loading effectiveness, are important factors in determining their efficacy. Overall, the utilization of phytochemicals in the treatment of arthritis and other related disorders, along with the application of nanomedicine techniques, holds promise for improving patient outcomes and addressing the challenges associated with the bioavailability and stability of these compounds.

Introduction

Rheumatoid arthritis (RA) is an autoimmune allergic condition causes ongoing inflammation and synovial fibroblast proliferation, which leads to the permanent loss of articular cartilage and bone fetched by atherosclerosis [1]. The primary cause of RA is inflammation and loss of articular cartilage, however the exact mechanism is yet unknown. Figure 1 depicted the various symptoms raised in RA such as joint pain, swelling, stiffness in the joints, insomnia, exhaustion, weight loss, and flu-like symptoms [2]. Additionally, discomfort and exhaustion can make it difficult to work and frequently have a bad impact on social life [3]. Worldwide, the prevalence of RA ranges from 0.5 to 1% of the population and in case of the Indian population, more than 20% of the population has any form of arthritis [4]. Compared to men (2%), women (4%) encounter it more frequently. More over 50% of RA patients in wealthy nations stopped working full-time within ten years after the disease’s inception. Every year, 41 out of every 100,000 people receive a RA diagnosis, and 1.3 million Americans have the disease. Diagnoses for the condition can be made anywhere between three months after the commencement of the illness and two years later, when it has become more severe [5]. RA patients typically dependent on analgesic and anti-inflammatory medications (NSAIDs) to treat illness symptoms [6]. The leading factor contributing to increased mortality in RA is cardiovascular disease (CVD) [7] (Figure 1).

Figure 1: Rheumatoid arthritis symptoms that appear over time.
Click to enlarge
Figure 1: Rheumatoid arthritis symptoms that appear over time.

It is different from osteoarthritis, a degenerative joint condition that solely affects joint function and also link to number of body functions as such gastrointestinal issues, renal dysfunction and an elevated risk of cardiovascular disease [8]. NSAIDs, steroids, disease-modifying anti- rheumatic medications (DMARDs) and glucocorticoids are the main pharmacological classes of drugs used to treat RA. These medications can only slow the RA’s progression, which raises the danger of infection. The prolonged use of these treatments will result in drug dependence and strong negative side effects including rashes, liver damage and hair loss [9].

In this autoimmune illness, a number of immunological processes are carried out simultaneously and the synovial fluid also plays a crucial role in these processes. Acute inflammation in RA is characterized by activation and proliferation of synoviocyte which results in the generation of cytokines and proteases. Pro-inflammatory cytokines like TNF-α, IL-6 and IL-1 are produced by synoviocytes that resemble macrophages, whereas fibroblast-like synoviocytes are primarily responsible for producing IL-6, proteolytic enzyme (MMPs), prostaglandins and leukotrienes [10]. Invasion of the synovium damages bone and cartilage. Additionally, T cells, β cells and adaptive immune cells infiltrate the synovium as a result of RA. Rheumatoid factors and ACPAs are produced by β cells which also serve as cells that deliver antigen and helps to activate T lymphocytes [11]. Numerous immune-mediated substances can promote inflammation in synovial joints [12]. The most prevalent kinds of arthritis are gout, juvenile idiopathic arthritis, reactive arthritis, psoriatic arthritis, rheumatoid arthritis, septic arthritis and ankylosing spondylitis [13].

Pathophysiology of RA

RA is distinguishing at the permeation of the synovial membrane in several joints by T cells, B cells and monocytes. An additional sign of RA synovitis is revascularization, or the formation of new blood vessels, which was brought on by the activation of endothelial cells in the preceding process. A giant cell layer of synovial lining results from the expansion of cells that resemble synovial fibroblasts and macrophages. At the cartilage-bone interface, this enlarged synovial membrane, commonly known as “pannus” penetrates the peri-articular bone, causing bony erosions and cartilage degeneration [14]. Its pathophysiology is complicated and comprises genetic and environmental variables, resulting in active synovial inflammation [15].

Vimentin, type II collagen, histones, fibrin, fibronectin, Epstein-Barr nuclear antigen 1, and α-enolase are examples of citrullinated proteins that the immune system no longer recognises as self-structures because of the susceptibility genes HLA-DR1 and HLA-DR4. Antigen-presenting cells (APCs), which are dendritic cells that have been triggered to start an immune response, take up antigens [16]. Additionally, the cytokine-activated fibroblasts’ production of RANK-L, along with TNF- α, IL-6, and the release of matrix metalloproteinase via cell-surface signalling from activation of the immune cells, causes macrophages and preosteoclasts to differentiate into osteoclasts, which are specialized in the breakdown of bone tissue [17].

The effective use of monoclonal antibodies against these cytokines, the most well-known of which is anti-TNF, in the treatment of RA further supports the key involvement of cytokines in RA synovitis (Figure 2). The main problem of these medicines is that they attack the immune system broadly, raising the risk of infections and maybe neoplasms. As a result, research aimed at understanding the actual immunopathology of RA may open up the possibility for specific targeted therapy which could greatly enhance the care provided to RA patients [18].

Figure 2: Pathophysiology of RA.
Click to enlarge
Figure 2: Pathophysiology of RA.

Treatment of RA

The primary goals and strategies for managing RA is to reduce joint pain and inflammation, improved joint function and prevention of deformity and joint degeneration RA (Figure 3).

Figure 3: Comparing the joints of individuals with normal and rheumatoid arthritis.
Click to enlarge
Figure 3: Comparing the joints of individuals with normal and rheumatoid arthritis.

The standard treatment guidelines for rheumatoid arthritis have been published by the Ministry of Health and Family Welfare (MOHFW), Government of India. NSAIDs, corticosteroids and DMARDs are the recent RA treatment used in India [19] (Table 1). Anti-rheumatic medications such as methotrexate (MTX), leflunomide, sulfasalazine and hydroxychloroquine (HCQ) taken with or without other NSAIDs i.e. aspirin, celecoxib, diclofenac, ibuprofen, indomethacin and ketoprofen etc. medicines can effectively control RA [20]. MTX has been a used as a successful treatment for RA since 1980s; we are also attempting to create a formulation that combines MTX with another drug [21].

Glucocorticoids (GCs) are additionally frequently utilized for the efficient management of RA. A number of GCs (methylprednisolone, triamcinolone, prednisone and hydrocortisone) are used in India for the treatment of RA as a combination therapy. It has been utilized by the 1/3rd of the Indian population which has been found in practiced for the previous ten years [22]. Additionally, treatment for RA using conventional methods has changed from mono-therapy to a combined strategy [23]. Numerous phytoconstituents are extracted or isolated from plants that have been used to control pro-inflammatory signals up to 60 to 90 %. It defends the complementary and alternative system of medicine which derived from natural medicinal plants because of the limited efficacy and numerous adverse effects of the treatments that are now accessible. Table describes some of the well-researched natural remedies, along with their sources and molecular targets. Despite the above-mentioned phytoconstituents have some potential advantages; their poor oral bioavailability and high first pass metabolism represent a significant drawback [24].

Difficulties with Traditional Dose Forms

Tablets, capsules, oral liquids, topical treatments, parenterals, paediatric/geriatric medicines, and transdermal patches are only a few of the standard dose forms used to treat RA [25]. Ointment, cream, gels, and paste are examples of topical dose forms for the treatment of RA [26]. Transdermal patches are the advanced formatting a topical drug delivery device that uses minimally invasive means to deliver medication via the skin. Poor patient compliance, a brief half-life (t/2), low bioavailability, and poor solubility were the main dements with conventional dosage forms used to treat RA. These issues may be resolved by developing new dosage forms example microparticles, nanoparticles, nanoemulsions, nanomicelles, nanodispersions, nanocapsules, nanosuspensions. Table 1 afflicted the currently available standard dose for the managing of RA [27].

Name of plantPart usedMain active compoundMode of actionAuthorsReferences
Alpinia galangalRhizomesCarotol; Eucalyptol;
5-hydroxymethylfurfural		Give relief in pain.Eram, et al.[28]
Argemone
mexicana		The whole
plant, Latex		Alkaloids Berberine;
protopine; Allocryptopine		Cure rheumatologicTilak, et al.[29]
Aphanamixis
polystachya		BarkEthanol; OilAct as analgesicsPrakash Mishra[30]
Anacyclus
pyrethrum		RootsEster pyrethrine;
N-alkylamides		Anti-rheumatic and Anti-
arthritic		Amine, et al.[31]
Aquilaria
agallocha		WoodTerpenoids, flavonoids
etc		Decoction taken of wood
and oil applied to help in
pain.		Rahman, et al.[32]
Cardiospermum
halicacabum		RootsApigenin,
protocatachualdehyde,
protocatechuic acid,
quercetin, etc		The oil used to relieve pain
and powder taken orally.
Treats infection in joints by
trophic organisms.		Shivamanjunath,
et al.		[33]
Coriandrum
sativum		Fruits and
leaves		Linalool, α-pinene,
camphor, limonene,
geranyl acetate, p-cymene		Taken orally. Relive in pain
and Anti-inflammatory		Nair, et al.[34]
Cordia dichotomaFruitsBetulin, octacosanol,
palmitic acid, stearic acid,
arachidic acid		Taken orally or in form of
powder
Anti-rheumatic.		Llidisa, et al.[35]
Commiphora
myrrha		GumSteroids, Terpenes,
Furanosesquiterpenes		Oil used for helping in pain
and taken gum taken orally
Relive in pain		Lee, et al.[36]
Euphorbia
neriifolia		LeafNriifolin-S, Neriifolin,
Nerrifoliene, Euphol,
Lectin, Taraxerol		Taken in form of juice orally.
Relieve pain in rheumatism.		Rahmatullah,
et al.		[37]
Euphorbia
ligularia		Whole plantEuphol, Lectin, Nerifoliol,
Neriifolin		Taken in the form of juice or
infusion.
Used in the treatment
of rheumatism.		Mali, et al.[38]
Ficus bengalensisLatexTriterpin, Friedelin, Beta
sitostero		Taken as juice. Used in the
treatment of rheumatism.		Rathod[39]
Fritillaria royleiBulbsAlkaloids, TerpenoidsTaken in form of powder or
juice Used in the treatment
of rheumatism.		Singh, et al.[40]
Glycosmis
Arborea		RootsAromadendrin,
transdihydroquercetin,
cis- dihydroqueretin		Taken in powder form.
Useful in the treatment of
arthritis.		Khandokar, et al.[41]
Hyoscyamus nigerLeaves and
Seeds		Alokaloids, saponins,
lignans, flavonoids		Taken in powder form.
Relive in pain and Anti-
inflammatory		Esmail Al Snafi,
et al.		[42]
Ipomoea cairicaSeedsFlavonoid, alkaloid,
tannin, saponins, phytate		The oil used for pain.
Relive in pain and Anti-
inflammatory.		Srivastava, et al.[43]
Jatropha curcasOilAcetic acid, α-epi-cadinol,
α-Cadinol, 14-Methyl-
pentadecanoic acid
methyl ester		The oil used for joint pain
Externally.
Relive in pain and Anti-
inflammatory.		Ait Babahmada[44]
Mimosa pudicaWhole plantAlkaloids, flavonoids,
steroids, saponins,
phenols, tannins,
anthocyanins		Taken orally. Helps to deal
with the symptoms of
rheumatoid arthritis.		Velayudhan Nair,
et al.		[45]
Ocimum
basilicum		Whole plantLinalool, eucalyptol,
estragole, eugenol		Taken in form of infusion,
powder or leaves taken raw
orally. Relive in pain and
Anti-inflammatory.		Hesam
Shahrajabian,
et al.		[46]
Pongamia
pinnata		LeavesBeta-sitisteryl acetate,
galactoside, stigma sterol		Taken in powder form.
Helps in painful rheumatic
joints.		Pulipati, et al.[47]
Piptadeniastrum
africanum		Stem barkFlavonoids,Anti-inflammatory,
antihyperalgesic and/or
anti-arthritic potential.		Mbiantcha, et al.[48]
alkaloids, steroids,
triterpenoids and
saponins
Sida cordifolia L.LeavesEphedrine,
pseudoephedrine,
vasicinol, choline, betaine		Used as antirheumatic.Kumar, et al.[49]
Merremia vitifoliaLeaf and
rhizome		Alkaloids, carbohydrates,
glycosides, flavonoids,
tannins, saponins,
phenols and proteins		Antioxidant and anti-
arthritic effects.		Akter, et al.[50]
Tribulus
Terrestris		Whole PlantFlavonoids, flavonol
glycosides, steroidal
saponins, alkaloids		Used for joint pain
externally. Used for external
application
in rheumatic-arthritis.		Haghmorad, et al.[51]
Chloranthus
serratus		Root, stem
and leaf		Sesquiterpenoid esters,
sesquiterpene dimer		Promotes blood circulation,
relieves phlegm and pain,
and treats rheumatic joint
pain.		Sun, et al.[52]

Table 1: List of Phytoactive compound for the treatment of RA.

Treatment of RA through Medicinal Plants

According to the WHO, almost 80% of people worldwide still use plant-based medications. They are an important part of the basic healthcare system in many developing countries [53]. Many medicinal plants are employed in Ayurveda, Siddha and Unani to treat a wide range of human afflictions which held a special role in human life. It also gives more details about the use of plants or plant components as medicine. Traditional medicines are highly regarded for their availability, affordability and lack of or little side effects [54]. Now a day herbs or plant based product is demanded due to less hazardous to both humans and the environment or safe as compare to synthetic product. Although herbs have been valued for their therapeutic, flavorful and aromatic properties for millennia, the modern era’s synthetic products temporarily over shadowed their significance. However, the slavish reliance on synthetics is no longer present and people are again going back to natural products in the hopes of finding safety and security. For their health, more than 75 percent of the world’s population mostly uses plants and plant extracts. Due to the therapeutic efficacy of the components presenting, medicinal plants have been employed as treatments for human ailments [55].

When conventional medications are used in clinical practice to treat arthritis, herbal plants are frequently employed as a supplemental therapy. Different name formulations for arthritis have developed by using variety of plants, including Cannabis, Withania somnifera, Terminalia bellerica, Emblica officinalis, Terminalia chebula, Boswellia serrata, Curcuma longa, Aconitum heterophyllym, Alpinia calcarata, Cissampelo spariera, Tinospora cordifolia (Guduchi), Cassia fistula (Amaltas). Lists of plants with active ingredients that are used for the treatment of RA are shown in table which produces antioxidant and anti-inflammatory effects. The evaluation of these herbal formulations through clinical and preclinical studies produced evidence-based data demonstrating the mechanism of such herbal plants and the active constituent of herbal plants responsible for reducing inflammatory mediators or the molecular signaling pathways linked to arthritis [56].

Phytochemicals from plants are important in the treatment of many ailments although their amount and quality might differ in different areas of medicinal plants. The most often used portions were found to be the leaves (33.7%) followed by complete plants (23.37%) and roots (7.14%). The most common component historically employed was said to be the leaves. The reason could be that leaves are used more frequently than other plant parts due to their ease of collection, straightforward use in medicine and central location for photosynthesis and other metabolic processes. As a result, a variety of chemical reactions take place, producing a variety of secondary metabolites and essential oils. They are essential to the use of phytotherapy or the treatment of several illnesses [57]. Numerous secondary metabolites, including alkaloid, glycoside, protein, flavonoid, reducing sugar, saponins, and phenolic molecule, were identified by the qualitative phytochemical examination [58] (Table 2).

Plant Name with FamilyMain Compound PhytoactiveMechanismReference
Withania somnifera
Solanaceae		Withanolides, Withaolide,
Hydroxycinnamic Acids, Phenolic
acid, and Phytosterol		Inhibitors of cyclooxygenase(COX)
mediated arachidonic acid
metabolism responsible for producing
prostaglandins(PG’s)		[59]
Curcuma longa
Zingiberaceae		Curcumin, demethoxycurcumin
(DMC) and Bisdemethoxycurcumin
(BDMC)		Inhibits transcription factor activation
(TNF), activation of NF-κB. NF-κB
activation		[60]
Piper nigrum PiperaceaePiperine, Piperamide, Sarmentine,
and Trichostachine		Inhibits adipogenesis by antagonizing
PPARγ activity in 3T3-L1 Cells		[61]
Commiphora mukul
Burseraceae		Myrrhanone A, B & C and
Myrrhanol A, B & C		Increases body’s metabolic rate and
reduces body fat.		[62]
Zingiber officinale
Zingiberaceae		Gingerols, Yakuchinone A,
Shogaols, and Paradols,		Inhibitory effect to reduce
prostaglandin(PG’s) synthesis.		[63]
Pongamia pinnata
Leguminoseae		Karangin, Pongamol,
Pongagalabrone, Pongapin,
Pinnatin, and
Kanjone		Denaturation of egg albumin[64]
Porana sinensis Hemsl.
Convolvulaceae		Esculetin, Umbelliferone, Trans-N-
feruloyltyramine, Caffeic acid and
Scopolin		By controlling the PI3K/AKT and HIF-1
pathways, pathological alterations and
the release of cytokines (IL-6 and HIF-1)
during the course of RA can be seen..		[65]
Calophyllum
inophyllumClusiaceae		Calophyllolide Inocalophyllins,
Inophyllins and Triterpenoids		Reducing the paw volume and act as
immunomodulation effect		[66]
Hemidesmus indicuss
Asclepiadaceae		Alkaloids, Steroids, Terpenoids,
Flavonoids,
Saponins,
Tannins,
Inulin and
Cardiac glycosides		Inhibits IL-6, TNF-α, and IL-1 β s IL-6,
TNF-α, and IL-1 β.		[67]
Cissus quadrangularis
Family: Vitaceae		Calcium, Carotene, Glycoside and
Alkoloids		In the presence of 3-ketosteroids, it heal
and protect muscles, tendons and bones
by interacting with cortical.		[68]

Table 2: List of bioactive constituents used for the treatment of RA.

Medication Delivery Systems Based on Nanotechnology

One of the key technologies that could help address a variety of human requirements to enhance health, well- being, and quality of life is nanotechnology. The invention of drug delivery systems as well as their handling and fate in biological systems are the subject of extensive research. However, the majority of research to date has focused on pharmaceuticals and bioactive plant chemicals, but their technological application is still in its infancy [69]. Different types of novel drug delivery system are used now a day’s which are given below [70] (Table 3).

MedicineCarrierTherapeutic effectsReferences
IndomethacinNanocapsules of PolymericArthritis, Anti-inflammatory, Anti-
Rheumatic		[71]
TacrolimusNanocapsules of lipid-coreAnti-rheumatoid arthritic[72]
MTXLipid-core nanocapsules poly (ε-
caprolactone)		Anti-rheumatic arthritic, Anti-
inflammatory		[73]
Resveratrol, QuercetinCapsules of Lipid-core NanoAnti-rheumatic arthritic[74]
Human serum AlbuminCapsules of NanoAnti-rheumatic arthritic[75]

Table 3: Anti-rheumatic and anti-arthritic medications in nanocapsules.

The industries use a variety of nanomaterials including nanoliposomes, nanoemulsions, solid lipid nanoparticles (SLNs), nano lipid carrier (NLC), nanosuspensions, molecular inclusion, polymeric NPs, polymeric micelles and SEDDSs [76, 77].

Nanoliposomes

Huge proportions of liposome are made from phospholipid molecules. Due to their hydrophilicity or lipophilicity, the phytoactive elements are entrapped at internal areas or between membranous layers [78]. As carriers, nanoliposomes guard the active component against chemical deterioration from the surrounding dispersion medium and regulate the frequency of release of the integrated substance. Drugs can get across the blood brain barrier (BBB) of stem - like cells through the holes of nano- liposomes while still safeguarding the integrity of their nanostructure. Although nanocarrier can circulate for a long time in the blood stream [79]. They were formed after the agitatation at 3,000 rpm at 4℃ for 30 min [80]. The system appears to be a successful strategy for increasing therapeutic effectiveness for hydrophobic drugs like teriflunomide- loaded nanoliposomes [81].

Nano-Emulsions

A nanoemulsion is an oil-in-water mixture with submicron-sized droplets that has been preserved by surfactants. Because of its enhanced basic solubility, frequency range of dissolution, and permeation through cytoplasmic membrane, this carrier has recently gained acceptance as a replacement for local lipophilic drug delivery [82]. Using a Brookfield viscometer, the viscosity of the nanoemulsion was determined. The instrument used five milliliters of material to measure the viscosity. Magnetic stirrer technology is used to produce nanoemulsion [83, 84].

Self-Emulsifying Drug Delivery Systems (SEDDS)

Self-emulsifying drug delivery systems (SEDDS), which increase the surface area of drug particles and membrane permeability have become viable drug delivery techniques for the solubility of poorly soluble medicines. SEDDS-based registered pharmaceuticals have seen tremendous growth in the market over the past 2 centuries. SEDDS are defined as isotropic mixtures of surface active substances, natural or synthetic oils and alternatively, one or more hydrophilic solvents, and a co-solvent that, upon gentle swirling in aqueous environments, spontaneously forms oil-in-water nanoemulsions.

All of the percipients for the ideal SEDDS formulations were selected based on solubility experiments [85]. It is a successful method for increasing the intestinal absorption of hydrophobic substances, improving their bioavailability and providing a more constant temporal character of their absorption [86]. The solubility, oral absorption rates and bioavailability of hydrophobic medicines are also said to be improved by the features of SEDDS. It could greatly aid in the oral absorption of hydrophobic and extremely lipophilic medicinal molecules since it is an isotropic mixture of oils, surfactants, and solvents. The main reason for this is that many bioactive substances have limited physiological and pharmacological uses when delivered orally due to their lower aqueous solubility, chemical instability, or lower bioavailability [87]. The claims to super saturable SEDDS technology will increase the solubility and the bioavailability of the active ingredients [88].

In addition, another work on the sparingly soluble biologically active chemical sinapic acid led to the development of a self-nanoemulsifying drug delivery system (SNEDDS) with improved in vitro drug release and increased sinapic acid bioactivity. According to latest reports, the sinapic acid- loaded SNEDDS synthesized using low-energy emulsification techniques have both in vivo and in vitro anti-inflammatory and antioxidant properties. Recently, a SNEDDS was created to transport ellagic acid (EA) in various functional meals and dietary supplements. The pharmacokinetics study of the respected SNEDDS in rats showed that the formulation greatly increased the dissolution rate [89]. The butanolic soluble fraction from stems of Cassia occidentalis was also prepared [90].

Solid Lipid Nanoparticles (SLNs)

A solid lipid nanoparticle (SLNs) is  also known as room-temperature lipid nanoparticles microsphere. The lipid used in the solid is a drug entrapment substrate substance that can be chosen from a number of lipids, such as glyceride combinations, lipid acids and mono-glycerides to triglycerides. It provides the benefits of physical stability; protection against medication degradation caused by labile substances, and regulated administration [91]. At ambient temperature, lipids that have been solidified by surfactants remain their solid structure as SLNs. This enables for the drug to be enveloped and produces prolonged drug release [92]. The drug’s release rate of SLNs varies with the type of matrix and the position of the medicament in the preparation. The SLNs were made of active ingredients that are biodegradable and biocompatible can comprise both hydrophilic and lipophilic molecules, showing to be an effective method for delivering drugs with control and precision [93]. It offers a novel drug delivery system for physicochemical weakened drugs and medication that is weakly absorbent in gastrointestinal (GI) mucosa and as a result greatly increasing the plasma concentration [94].

Nano-Structured Lipid Carriers (NLCs)

Nano-structured lipid carriers (NLCs) are one of most promising method for increasing drug penetration into skin especially for drug co-encapsulation. Small-sized NLCs, which are made up of both solid and liquid lipid nano-particles, can create a monolayer on the skin to regular moisture loss. Skin moisture may allow medications to enter the skin more easily by expanding holes within cell layers. Due to its outstanding qualities, such as their high drug load, low leakage, prolonged release property and bioactivity they are commonly used for topical delivery [95]. The medications that have been encapsulated are first liberated from the micro-emulsions and diffuse through the SC. The researchers showed that the trans-follicular route was the main method by which nano- emulsions penetrated deep epidermal layers. Several topical NLCs have received preclinical research approval and shown significant therapeutic efficacy [96]. By measuring the particle size and entrapment effectiveness of freeze-dried NLCs after reconstituted, it was possible to assess the impact of freeze drying on particle stability. NLCs were also kept at 4 and 25°C to conduct a research on storage stability [97].

Nano-Suspensions

Nano-suspensions, a carrier-free NP delivery technology, use the least amount of surfactant and/or polymer possible. Pure drug nano-particles create colloidal dispersions known as nano-suspensions. Because insoluble medicines have poor solubility and bioavailability, which is clearly enhanced the solubility of poorly soluble medicines, increased drug dissolution, and improved bioavailability [98]. Although nano-suspensions have many advantages, they seem to be less stable and more likely to lead to crystal formation and particle aggregation. In order to prevent agglomeration and maintain the nano-suspension’s physical stability during preparation and storage, an acceptable stabilizer is essential. Electrostatic repulsion and stearic stabilization are the two main types of stabilization processes found in frequently used stabilizers [99]. Precipitation, wet milling, high pressure homogenate, or a combo of these techniques can all be used to create NSs. Wet ball grinding is a popular technique for making NSs because it allows for maximum drug loading, continuous operation, and the absence of chemical solvents [100]. In order to assess the sustainability of the ideal nano-suspension, experiments of short-term physiological stability being conducted [101]. Polymeric/ Nanomicelles Polymeric nanomedicine is the Amphiphilic molecules of hopeful and quickly developing window [102]. It has a flexible character, nanomicelles in nano science they are often utilized as carrier systems. They are tiny in size and polymeric in nature, making them usage ocular drug delivery is possible. Hydrophilic nano-micelles have outstanding encapsulation qualities and a hydrophobic core [103]. In closed glass containers, the nano-micelles suspensions were kept into vials stored in three distinct ways (at room temperature, 4°C or 37°C) [104]. Through ligand-receptor interaction, polymer nanoformulations will improve the targeted deposition of medicines in the lesion areas. In contrast to traditional treatment, polymer nanotherapeutics for RA offer a number of benefits, including extremely selective aggregation, lower systemic toxicity, decreased treatment frequency, regulated drug release, and others. The therapeutic effectiveness is significantly enhanced by polymer nanotherapeutics [105]. Another revolution method for regulating drug release from these nanomedicines when they are exposed to the acidic environment of the inflamed synovium is the use of polymeric micelles [106].

Polymeric NPs

Polymeric NPs are a promising method for delivering bioactive molecules to the target region with improved stability and preventing drug degradation. Medicament loading into polymeric nanosystem and hybrid polymeric systems develops to control poor dispersion of drugs. The current research layout to evolve polymeric NPs system as relevant method for target delivery of low soluble drug [107]. Overcoming the drawbacks of lipid-based delivery systems (LDS), such as liposomes, emulsions and micelles, is a key advantage of polymeric NPs. They outperform those other LDSs in terms of loading efficiency, stability, and regulated release of active biomolecules [108].

Natural Products and Herbal Medicines Explored for Arthritis as Nanocarrier

Patients with autoimmune disorders, such as RA, are either currently using a variety of herbal items from traditional systems of therapy, with or without have the primary care physician’s understanding, or are being researched for their potential as treatments. These plants are used in traditional Chinese medicine (TCM), traditional Japanese medicine (Kampo), traditional African medicine (Egyptian and other), traditional Indian medicine (Ayurvedic medicine), and other systems [109]. In order to fulfill the urgent need to produce effective pharmaceuticals, herbal items have emerged as some of the most significant resources. They will continue to be used in this effort and will play a significant role in the search for novel drugs to cure human illnesses particularly serious ones [110]. Since ancient times, herbal items have been utilized extensively as medicine. These natural compounds are potential candidates for lead structure discovery due to their wide chemical variety, pharmacological selectivity, and molecular characteristics [111]. Numerous plant isolates with anti-arthritic (AA) characteristics have been studied and reported, numbering in the thousands. These plant isolates have been divided into groups such as flavonoids, terpenoids, glycosides, and alkaloids [112].

Recent years have seen the isolation of herbal compounds with anti-inflammatory-mediated activities. For the treatment of arthritis, these plants have either been used exclusively or in combination with other treatments such as extracts [113]. Isolation of pure compound from the plant extracts and has a known structure that is responsible for a certain biological action. It aids in the development of new powerful chemicals. They have historically been utilized to treat practically all diseases before the advent of synthetic medications [114]. NSAIDs and other chemotherapeutic agents have made significant progress in treating arthritis, but there are still drawbacks, including unpleasant side effects on the heart, gastrointestinal system, and kidneys, as well as a lack of long-term remission. These issues have reignited interest in conventional herbal treatments [115].

Many people prefer using herbal remedies over more expensive conventional ones since they are easily available, inexpensive, socially and culturally acceptable and simple to produce. Additionally, African culture and customs place a high value on the use of herbal remedies [116] (Table 3). A scientific validation of their uses may expand the range of plant species available for the treatment of arthritis, fully utilize their potential as sources of medicines, and significantly lessen the burden on plant species that are at risk of extinction. Knowledge about the use of specific plant species varies between geographic locations in Africa [117].

Conclusion

Numerous anti-arthritic medications have been created and are available on the market. But continued use of these medications may cause a number of undesirable side effects. Natural products might be thought of as a preferable way for managing RA because, in most cases, medication is required for a lifetime. Due to its numerous applications, there has been an increase in interest in the creation of nanoformulations for the treatment of RA in recent years. These nanoformulations have a variety of useful qualities, including biocompatibility, lowered dosages, decreased frequency of dosing, increased efficacy, sustained action, and fewer side effects. These nanosystems distribute the majority of anti-rheumatic arthritis medications (glucocorticoids/ NSAIDs, etc.) orally, topically, and systemically. With the use of phytoconstituents, this review may enable the basic idea to concentrate on nano based therapeutic approaches for the successful treatment of RA.

Compliance with Ethical Standards

Not applicable

Source(S) of Funding

Not applicable

Conflict of Interest

The authors report no declarations of interest.

Availability of Data and Material

Samples can be acquired from the first author upon request.

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@article{yadav2023,
  title   = {Plant Based Nanoformulation as an Alternative
Phytotherapeutics to Regulate Rheumatoid Arthritis a Review},
  author  = {Yadav P, Gupta T* and Nayak A},
  journal = {International Journal of Pharmacognosy & Chinese Medicine},
  year    = {2023},
  volume  = {7},
  number  = {2},
  doi     = {10.23880/ipcm-16000247}
}
Yadav P, Gupta T* and Nayak A (2023). Plant Based Nanoformulation as an Alternative
Phytotherapeutics to Regulate Rheumatoid Arthritis a Review. International Journal of Pharmacognosy & Chinese Medicine, 7(2). https://doi.org/10.23880/ipcm-16000247
TY  - JOUR
TI  - Plant Based Nanoformulation as an Alternative
Phytotherapeutics to Regulate Rheumatoid Arthritis a Review
AU  - Yadav P, Gupta T* and Nayak A
JO  - International Journal of Pharmacognosy & Chinese Medicine
PY  - 2023
VL  - 7
IS  - 2
DO  - 10.23880/ipcm-16000247
ER  -