The Scientific World Journal

The Scientific World Journal / 2018 / Article

Review Article | Open Access

Volume 2018 |Article ID 4392184 | 8 pages | https://doi.org/10.1155/2018/4392184

Effects of Matricaria Recutita (L.) in the Treatment of Oral Mucositis

Academic Editor: Valdir Cechinel Filho
Received12 Feb 2018
Revised19 Apr 2018
Accepted06 May 2018
Published12 Jun 2018

Abstract

Objective. The objective of this study was to review the effects of the Matricaria recutita (L.) in the treatment of oral mucositis. Methodology. The online search was performed in the period from June 2016 to April 2018 by means of databases LILACS (Latin American and Caribbean Center on Health Sciences Information), SciELO (Scientific Electronic Library Online), and MEDLINE (Medical Literature Analysis and Retrieval System Online). The consultation was restricted to the years 1991 to 2018 with the aim of elucidating the effects of Matricaria recutita in the treatment of oral mucositis. Results. The final sample consisted of 21 studies, of which 10 were developed in animals and 11 in humans, published from 1991 to 2017, with a total sample of 644 patients. The total number of patients treated with Matricaria included in 11 studies was 364, while in the control groups the total number was 280. In experimental studies, animal models used were rats and the sample size ranged between 36 and 105 animals submitted to the induction of oral mucositis, where 4 studies used an intraperitoneal injection of 5-fluorouracil, while 7 induced lesion in the mucosa. From the data collected, it should be noted that both studies with humans and with animals showed significant effects. In this way, there is strong evidence for the discussion on the therapy; however, it should be noted that more studies are developed in order to clarify the most appropriate protocol for the prevention and treatment of injuries. Conclusion. According to the results found in this study, Matricaria recutita appeared to be a promising alternative for the treatment of oral mucositis. However, due to the great variability in the various types of intervention, more controlled double-blind randomized clinical studies are necessary to ensure the best protocol for treating oral mucositis.

1. Introduction

The oral mucositis is a common inflammation in patients with malignant neoplasms, undergoing antineoplastic therapy; its symptoms predispose the oncological patient to various serious complications. Its incidence is 75–100% among patients who perform hematopoietic stem cell transplantation; 40–85% of incidences occur in patients during chemotherapy and/or radiotherapy [1, 2].

The toxicity caused by antineoplastic agents generates an inflammatory response mediated by reactive oxygen species, proinflammatory cytokines, interleukin-1, interleukin-11, and interleukin-6, which harm not only the tissues but also adjacent cells, causing injury in mucosal cells and thus reducing the epithelial thickness, resulting in ulcers [3, 4].

Due to the inflammatory condition, the oncological patient can present difficulties in basic oral functions such as speech and chewing, with recurrent complications like dysgeusia, intense pain in swallowing, nutritional deficiencies, and risk of secondary infections. This whole range of events significantly interferes in the patient’s quality of life. Furthermore, in the most severe degrees, oral mucositis may require partial or complete interruption of the antineoplastic treatment, thereby increasing the proliferation of tumor cells and hindering cancer control [5, 6].

Strategies to prevent and/or treat oral mucositis are still not well clarified because there is no defined protocol. However, some measures are employed to reduce its incidence and severity, such as basic oral care protocols, the 0.12% chlorhexidine digluconate, anti-inflammatory therapy, biological response modifiers, cryotherapy, low-intensity laser therapy, and the use of plant extracts as Matricaria recutita [7].

Matricaria recutita Linnaeus (Asteraceae) is known as chamomile and has been studied for years because of its agronomic and phytochemical aspects. It is a plant widely used in traditional medicine for its antioxidant, antimicrobial, and anti-inflammatory action. It features more than 200 constituents such as terpenoids, flavonoids, coumarins, fatty acids, alkaloids, polysaccharides, and glycoside derivatives. This plant has been used in the treatment of oral mucositis in order to provide relief and comfort to the painful symptoms of the patient [8, 9]. In the light of the considerations raised, this study aims to review the effects of M. recutita in the treatment of oral mucositis.

2. Methods

2.1. Search Strategy

The online search was conducted during the period from June 2016 to April 2018 through the databases LILACS (Latin American and Caribbean Center on Health Sciences Information), SciELO (Scientific Electronic Library Online), and MEDLINE (Medical Literature Analysis and Retrieval System Online). The query was restricted to the years of 1991 to 2018 in order to elucidate the effects of Matricaria recutita in the treatment of oral mucositis. The descriptors were selected through consultations in DeCS (Descriptors in Health Sciences) and MeSH (Medical Subject Headings): “Matricaria recutita,” “oral mucositis,” “stomatitis,” and “cancer.” The same descriptors were used in all the virtual libraries to standardize the research. Initially, two researchers sought articles that met the criteria of selection and examined the titles and abstracts of studies available in the databases searched. Then, the articles did not heed eligibility criteria or duplicate items were not included in this study. From this assessment, the researchers selected the studies that were available in full by the regular portal access of the Coordination for the Improvement of Higher Education Personnel (CAPES).

2.2. Selection Criteria of the Studies

This work included studies that addressed mucositis and stomatitis caused by chemotherapy and/or radiation, as well as studies that used Matricaria as therapeutic approach. Due to the scarcity of studies that used Matricaria in treatment of mucositis or stomatitis in humans, we decided to include studies on animals in order to get more results on the effects of the plant in the prevention and healing of injuries. We adopted the following inclusion criteria: type of study (clinical trials phases I, II, III, and IV, controlled clinical trials, randomized controlled clinical trials, and observational studies of the cohort), subject of research (human beings and animals ), language of publication (English and Spanish), and year of publication (1991 to 2018). There were deleted articles that did not heed eligibility criteria.

2.3. Data Collection and Quality of Studies

The relevant data for this study were obtained by two researchers through form developed from the identification of the most significant data for this research. We discussed information about author and year of publication. The data regarding the population of article covered data such as sample, type of cancer, neoplastic treatment type, and route of administration of the agent, as well as the type of treatment to the control group. The type of intervention was also included, but note that there is no standardization of the vehicle used, form of administration, and duration of treatment. Therefore, in order to evaluate the methodological quality of the studies, we used a scale of quality. The criteria for assessing the quality of scale through studies were randomization, double-blinding, and masking all the losses and exclusions. The scale used to evaluate the methodological quality of the articles proposes a maximum of five points: one point for each Yes, an additional point for the randomization, and other additional masking points (Table 1). Even if the expression double-blind is not mentioned in the text but there is the researcher’s description and patients’ masking, this item is included in the context. The study quality is obtained by its amount of points, considering it with two or less points as a study of poor quality [10].


Items

1. The study was described as random
  (using words such as “random”, “randomization”)?
2. The study was described as double blind?
3. There have been comparisons and results?
4. Comparisons and results described are adequate?
5. Losses have been described and exclusions?

3. Results

The online search resulted in 65 jobs for the descriptors used. 39 articles were selected for thorough evaluation of the inclusion and exclusion criteria, being considered potentially relevant studies. After analysis, it was found that five were review articles and four dealt with in vitro study. In addition, two studies were not Matricaria and two works were comments from articles and were excluded.

The final sample consisted of 21 studies, of which 10 were developed in animals and 11 in humans, published between 1991 and 2017, with a total sample of 644 patients. The total number of patients treated with Matricaria included in 11 studies was 364, while in control group the total number was 280. In the sample, the overall frequency of head and neck neoplasms was 28% and 36% were undergoing treatment for hematologic diseases, 18% did not declare the type of neoplasm, 9% had gastric cancer, and 9% were bearers of non-Hodgkin lymphoma (Table 2).


Reference Type of cancerTreatment modalityInjury classification toolStudy groupsNumber of patientsForm of administrationDuration of the intervention

[11]Head and neck cancerQTThe WHO scaleGroup 1. Chamomile-Prophylaxis (radiotherapy)
Group 2. Chamomile Prophylaxis (chemotherapy)
Group 3. Therapeutic Chamomile
Group 1: 20
Group 2: 46
Group 3. 32
Mouthwash14 consecutive days

[12]NCQTThe WHO scaleGroup 1: Placebo
Group 2: Chamomile
Group 1: 82
Group 2: 82
Mouthwash14 consecutive days

[13]NCQTThe WHO scaleGroup: ChamomileGroup: 01Oral30 consecutive days

[14]
Head and neck cancerRTThe WHO scaleGroup 1. Chamomile gel during the radiotherapy
Group 2. Chlorhexidine digluconate
Group 3. Chamomile gel after radiotherapy
Group 1: 7
Group 2: 7
Group 3: 8
TopicNC

[8]LeukemiaTCHThe WHO scaleGroup 1. Control
Group 2. the 0.5%
Group 2 Chamomile: Chamomile to 1%
Group 3. the chamomile 2%
Group 1: 10
Group 2: 10
Group 3: 10
Group 4: 10
Mouthwash5 consecutive days

[15]Head and neck cancerRTThe WHO scaleGroup 1. Chamomile
Group 2. Honey
Group 3. Water
Group 1: 35
Group 2: 35
Group 3: 35
Mouthwash15 consecutive days

[16]LeukemiaTCTThe toxicity scale INCGroup 1. Placebo
Group 2. Mint and Chamomile
Group 1. 33
Group 2. 27
MouthwashNC

[17]Gastric cancerQTThe WHO scaleGroup 1. Cryotherapy-Control
Group 2. Cryotherapy with chamomile
Group 1. 18
Group 2. 20
Topic22 consecutive days

[18]Non-Hodgkin lymphomaRTVisual analogue scale sterile caliperGroup 1. Placebo
Group 2. Triamcinolone Acetonide
Group 3. Chamomile
Group 1: 15
Group 2: 14
Group 3: 14
Oral10 consecutive days

[19]Acute lymphoblastic leukemiaQTThe WHO scaleSingle group: ChamomileSingle group: 31Mouthwash14 consecutive days

[20]Acute lymphoblastic leukemiaQTThe WHO scaleGroup 1: (Allopurinol, sucralfate, sodium bicarbonate, and semi-saline serum)
Group 2: Chamomile
Group 1: 31
Group 2: 31
Mouthwash14 consecutive days

UI: uninformed; ↓: reduction; ↑: increase; TNF: tumor necrosis factor; IL: interleukin; HCT: hematopoietic cell transplantation; QT: chemotherapy; RT: radiotherapy; WHO: World Health Organization.

With regard to oncological treatment modality, three studies have treated their patients with radiotherapy, patients were treated with chemotherapy in six other articles, and in two other studies the patients were treated with hematopoietic cell transplantation. Nine studies used the grading scale for oral mucositis, whereas only one study used the NCI oral toxicity scale. One study used the visual analogue scale and compass.

In view of the scarcity of articles related to the theme of this review, 10 studies were added which addressed the anti-inflammatory effects and lesions healing induced in Matricaria animals. In experimental studies, animal models used were mice and the sample size ranged from 36 to 105 animals undergoing induction of oral mucositis, where 4 studies used intraperitoneal injection of 5-fluorouracil, while 7 studies induced injury in mucosa.

From the data collected, it is observed that both studies with humans and with animals showed significant effects. In this way, there is robust evidence for the discussion on the therapy; however, it should be noted that more studies are developed in order to clarify the most appropriate protocol for the prevention and treatment of injuries.

According to the studies presented in Tables 2 and 4, there are different ways of preparation and administration of Matricaria recutita and standardization in different types of intervention, with varied concentrations and different constituents that can lead to controversial results. As to the duration of treatment, there is no standardization in treatment time, which can range from 5 to 67 days; however, you can see positive results in the early days. There are no studies in the literature addressing the presence of adverse events in any of the interventions. Quality analysis was performed only in the studies developed in humans, in which only 10 articles were analyzed; one article was excluded from this analysis because it did not meet the scale criteria. The result of the quality evaluation revealed that 90% (9/10) of the articles analyzed were of good quality (Table 3).


ReferenceInterventionJadadscoreResults

[11]Kamillan Liquidum solution made from chamomile flowers4↓ in the appearance of oral mucositis in 85% of the patients
↑ immediate relief of painful symptomatology
↑ reepithelialization of the desquamated tissue

[12]Chamomile concentrate5Degree of oral mucositis < in the male gender
No significant difference (treated versus placebo groups)

[13]Infusion with 8 g of dried flowers with 20 ml of water-↓ in the oral mucositis grade III on the 13th day
30th day complete absence of mucositis

[14]Gel with 3% of chamomile extract3↓ discomfort and severity of oral mucositis
↓ treatment time
It was not effective in preventing

[8]Oral antiseptic with 0.5%, 1%, and 2% of chamomile extract5Significant results found in the dosage of 1%
↓ incidence
↓ intensity of injuries
↓ oral mucositis duration

[15]3 ml of chamomile mouthwash added to the half cup of water3↓ pain
↓ incidence

[16]Oral antiseptic with 1% of chamomile extract and 1% of5↓ pain
↓ dryness of the oral cavity
↓ dysphagia

[17]Ice with 400 ml of water and 10 g of chamomile flowers4↓ incidence of oral mucositis
↓ painful symptomatology
↓ presence of ulcerations

[18]Chamomile Orobase5↓ intensity of pain
↓ the size of the lesion

[19]15 drops of chamomile solution diluted in a glass of water0↓ incidence
↓ gravidity

[20]30 ml of chamomile4↓ incidence
↓ gravidity

↓: reduction; ↑: increase.

ReferenceAnimalExperimentStudy groupsInterventionDuration of the experimentResults

[21]Albino male rats (Wistar)Mucosal ulceration left by abrasion with scalpel blade and marker of 8 mm diameterGroup 1. Treated with saline
Group 2. Treated with chamomile extract
Group 3. Treated with triamcinolone
NC10 daysEpithelium refurbished absence of inflammation
↑ collagen deposition
↓ apoptosis and TNF-α

[22]Albino male rats (Wistar)Injury with 1 mm of depth in the central region of the tongueGroup 1. Chamomile ointment
Group 2. Without treatment
Topical application of 2 ml chamomile extract with concentration of 10%10 days↑ epithelialization and collagenous fibers
↑ fibroblasts
↓ inflammation

[23]Female albino rats (Wistar)Intraperitoneal administration of 5-FluorouracilGroup 1. Distilled water management
Group 2. Chamomile extract
Probe intragastric administration of the alcoholic extract of chamomile12 days↓ toxicity caused by medicine
↓ size of the lesion prolonged use caused toxicity in the mucosa of the tongue

[24]Female albino mice (Swiss)Application of injection of carrageenan on hind right mouseGroup 1. Saline
Group 2. Chamomile
MeOH extract of chamomile16 days↓ development of arthritis
↓ histamine
↓ inflammation

[25]Albino male rats (Wistar)The animals were trichotomized with an electric razor in an area of skin back approximately 10 cmGroup 1. Ethanolic extract of Chamomile
Group 2. Crude extract of Chamomile
Topical application in skin of Wistar rats with carrageenan-induced paw edema12 daysNot provide anti-inflammatory action on the induced edema

[9]Male Golden Syrian hamstersIntraperitoneal administration of 5-FluorouracilGroup 1. Without treatment
Group 2. Chamomile
Group 3. Corticosteroids
Ointment with 100 g of chamomile extract14 days↑ levels of TNF-α on the 5th day
↓ severity
↓ levels of IL-1β and TNF-α

[26]Female Syrian Golden hamstersIntraperitoneal administration of 5-FluorouracilGroup 1. Without treatment
Group 2. Chamomile
Group 3. Corticosteroids
Ointment with 100 g of chamomile extract16 days↓ incidence of oral mucositis
↓ severity
↓ vascular hyperemia
↓ inflammatory infiltration

[27]Albino male rats (Wistar)Intraperitoneal administration of 5-FluorouracilGroup 1. Without treatment
Group 2. Chamomile
Ointment with 10% of chamomile extract10 days↑ reepithelialization
↑ collagen fibers
↓ of the inflammatory process
↓ on wound size

[28]Albino male rats (Wistar)Traumatic ulcers on tongue with 3 mm diameterGroup 1. Without drugs
Group 2. Chamomile
Group 3. Acetone of triamcinolone topical
Topical formulation of Chamomile14 days↑ healing
↑ repair of the epithelium and connective tissue total in 5 days
↓ inflammatory cells

[29]Albino male rats (Wistar)Immersion in boiling water for 8 seconds, resulting in burning of 20% of the body areaGroup 1. Without treatment
Group 2. Application of olive oil
Group 3. Chamomile
Chamomile flowers folder added to olive oil67 days↑ tissue regeneration
↓ inflammatory infiltration

UI: uninformed; ↓: reduction; ↑: increase; TNF: tumor necrosis factor; IL: interleukin.

4. Discussion

The vast majority of the synthetic agents used to prevent or treat oral lesions resulting from cancer treatment present side effects and can interact with other drugs. However, the natural medicines are presented as a promising alternative; however, few studies evaluate the effects of these agents in the reduction of injuries. This study sought to gather through a literature review articles that used Matricaria to treat oral lesions; this search resulted in 21 studies in humans and animals.

Most of the studies found showed consistent evidence and assessed the effects of M. recutita in the control of oral mucositis to be positive. As for the other outcomes, the few publications indicate that such effects are caused due to the inhibition of nitric oxide and nitric oxide synthase, blocking of the transcription factor NF-kβ, and inhibition of COX-2 and metalloproteinase-9 which reduce discomfort and severity of oral mucositis.

M. recutita is a plant widely used in traditional medicine due to its therapeutic properties that come from its chemical constituents. Its antioxidant effects inhibit free radicals and reduce the levels of IL-1b and TNF-α, which causes a histopathological and clinical improvement. The results of the present study corroborate data obtained by [25] regarding the levels of mediators influenced by action of vegetable extract, which directly and indirectly affect inflammatory and repair phase in oral mucositis.

According to the results of this study, there is a great variability in the types of intervention regarding the vehicle, the used concentration, mode of application, and time of treatment. However, the use of ointment and antiseptic mouthwash prevailed; the average treatment time was 15 days, using the intervention twice a day on average. A comparative analysis of standards and the results obtained in these studies is necessary, so that they may be reproduced and used in clinical practice [30].

Among the selected studies, eight compared M. recutita with other forms of treatment. In a study that compared a mouthwash with 1% concentration of Matricaria recutita (group I) with a placebo mouthwash (group II), group I showed significant reduction in the , , and assessment, showing that the symptoms, healing period, and the number of lesions decrease after two days using the mouthwash, which corroborates the results of this review [31].

Oral mucositis in oncological patients is associated with the dose of the chemotherapy drugs and the type and scope of their administration time; consequently, these elements can vary depending on the used protocol, as well as the clinical characteristics of the patient [32].

Based on the results, it was found that the studies showed different results in the treatment of oral mucositis. This fact can be explained by the large heterogeneity of protocols, different prophylactic measures, and time duration of the intervention. For Matricaria commercialization as therapeutic agent of oral mucositis, the dosages need to be standardized in order to minimize any risk to the patient.

In an analysis of the effectiveness of a mouthwash containing 1% of Matricaria recutita extract in patients with gingivitis and fixed orthodontic appliances, the authors found that mouthwash had significantly reduced the rate of gingival bleeding after 15 days of treatment, compared with the placebo group. However, this reduction was similar to the group that used the 0.12% chlorhexidine and the difference between the groups was not significant [18].

One study evaluated the effect of Matricaria recutita and triamcinolone in patients with aphthous stomatitis and found that the ulcer size reduced on the day as well as pain on the and days in both groups. However, the triamcinolone was superior to M. recutita on the day [33]. This finding supports the results found in the study that showed that the extract provided pain relief in 82% of patients with stomatitis after 5, 10, and 15 minutes; the authors concluded that the analgesic effect improved the patients’ quality of life [21].

In this article, we present the current clinical evidence on the effects of Matricaria for prevention and treatment of oral mucositis. The most common limitations observed in the studies were the sample size, the diversity of protocols, duration of intervention, and the different treatments used in the control group, making it difficult to have a definitive conclusion of the effectiveness of chamomile on mucositis.

The results found in this review demonstrate the therapeutic potential of Matricaria recutita in the treatment of oral mucositis. The different protocols used as well as the clinical characteristics of the patients in the selected studies indicate that there may be, or not, greater involvement of the oral mucositis, preventing, in this way, a more careful analysis and hindering its proper management. In this review, all studies showed significant reduction of oral mucositis after using M. recutita, with lower incidence, severity, and time of involvement, which indicates that this extract is effective in the studied involvement.

Thus, one can infer that Matricaria recutita can directly inhibit COX-2 and the synthesis of inflammatory mediators, such as prostaglandin E2 [34]. In this way, M. recutita appears to be an option for the treatment of oral mucositis, because it can inhibit the action of proinflammatory cytokines, influence the chemotaxis of leukocytes and COX-2 way and lipopolysaccharide, and activate macrophages. Furthermore, it can influence the repair of injuries, reduce neutrophil elastase and metalloproteinase-9 and inhibit the transcription factor Natural Killer Cell (NK); thus, it can reduce the discomfort and severity of oral mucositis during the oncotherapy [25, 26]. Therefore, for feedstock to be marketed as a therapeutic agent of oral mucositis, it is necessary to standardize dosages in order to minimize any risk to the patient.

Table 5 presents the main features of Matricaria recutita effects in animal and human models. The treatment of oral mucositis has been only palliative in order to minimize the pain and control the possible infections, contributing to the repair process. Thus, the plant extracts have shown promising results: low cost, no side effects [14, 27, 35], and easy self-application.


CharacteristicsEffects of M. recutita

Histological↑ reepithelialization of the desquamated tissue
↓ vascular hyperemia
↑ collagen fibers
↓ inflammatory infiltration
↓ inflammatory process

Clinical↑ immediate pain relief
↓ dryness of the oral cavity
↓ dysphagia
↓ wound size
↓ incidence
↓ duration
↓ presence of ulcerations
↓ discomfort
↓ severity

5. Conclusion

According to results, it is concluded that the studies that evaluate the effects of Matricaria on oral mucositis are scarce. However, this proved to be a promising alternative for both prevention and treatment of oral mucositis. Its main advantages include being a noninvasive treatment and its low cost. M. recutita provides effective results in reducing inflammatory activity, acceleration of the process of repair, and promoting analgesia. However, due to great variability in the various types of intervention, it is necessary that more studies be developed with appropriate sample size and methodology to confirm the best method of intervention in the management of oral mucositis.

Data Availability

The data from this manuscript refer to a bibliographic review.

Conflicts of Interest

The authors declare that there are no conflicts of interest, financial or otherwise.

Acknowledgments

The authors are grateful to the Foundation for Scientific Research and Development of Maranhão (FAPEMA) for the scholarship granted to Vânia Thais Silva Gomes (126857/2016).

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Copyright © 2018 Vânia Thais Silva Gomes et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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