Phytocontact Dermatitis due to Mustard Seed Mimicking Burn Injury: Report of a Case

Brassicaceae Mustards: Phytochemical Constituents, Pharmacological Effects, and Mechanisms of Action against Human Disease

The Brassicaceae genus consists of many economically important mustards of value for food and medicinal purposes, namely Asian mustard (Brassica juncea), ball mustard (Neslia paniculata), black mustard (B. nigra), garlic mustard (Alliaria petiolata), hedge mustard (Sisymbrium officinale), Asian hedge mustard (S. orientale), oilseed rape (B. napus), rapeseed (B. rapa), treacle mustard (Erysimum repandum), smooth mustard (S. erysimoides), white ball mustard (Calepina irregularis), white mustard (Sinapis alba), and Canola. Some of these are commercially cultivated as oilseeds to meet the global demand for a healthy plant-derived oil, high in polyunsaturated fats, i.e., B. napus and B. juncea. Other species are foraged from the wild where they grow on roadsides and as a weed of arable land, i.e., E. repandum and S. erysimoides, and harvested for medicinal uses. These plants contain a diverse range of bioactive natural products including sulfur-containing glucosinolates and other potentially valuable compounds, namely omega-3-fatty acids, terpenoids, phenylpropanoids, flavonoids, tannins, S-methyl cysteine sulfoxide, and trace-elements. Various parts of these plants and many of the molecules that are produced throughout the plant have been used in traditional medicines and more recently in the mainstream pharmaceutical and food industries. This study relates the uses of mustards in traditional medicines with their bioactive molecules and possible mechanisms of action and provides an overview of the current knowledge of Brassicaceae oilseeds and mustards, their phytochemicals, and their biological activities.

Do Chest Compresses with Mustard or Ginger Affect Warmth Regulation in Healthy Adults? A Randomized Controlled Trial

Background

Chest compresses with mustard (MU) or ginger (GI) are a complementary treatment option for respiratory tract infections. However, little is known about their specific thermogenic qualities. This study examines the short-term effects of MU, GI, and chest compresses with warm water only (WA) on measurable and self-perceived body warmth in healthy adults.

Methods

This was a single-center, randomized controlled trial with cross-over design (WA versus MU versus GI). 18 participants (23.7 ± 3.4 years; 66.7% female) received MU, GI, and WA in a random order on three different days with a mean washout period of 13.9 days. Chest compresses were applied to the thoracic back for a maximum of 20 minutes. The primary outcome measure was skin temperature of the posterior trunk (measured by infrared thermography) immediately following removal of the compresses (t1). Secondary outcome measures included skin temperature of the posterior trunk 10 minutes later (t2) and several parameters of self-perceived warmth at t1 and t2 (assessed with the Herdecke Warmth Perception Questionnaire).

Results

Skin temperature of the posterior trunk was significantly higher with MU compared to WA and GI at t1 (p < 0.001 for both, primary outcome measure) and t2 (WA versus MU: p=0.04, MU versus GI: p < 0.01). Self-perceived warmth of the posterior trunk was higher with MU and GI compared to WA at t1 (1.40 ≥ d ≥ 1.79) and remained higher with GI at t2 (WA versus GI: d = 0.74). The overall warmth perception increased significantly with GI (d = 0.69), tended to increase with MU (d = 0.54), and did not change with WA (d = 0.36) between t0 and t1.

Conclusions

Different effects on warmth regulation were observed when ginger and mustard were applied as chest compresses. Both substances induced self-perceived warming of the posterior trunk, but measurable skin temperature increased only with MU. Further research is needed to examine the duration of these thermogenic effects and how chest compresses with ginger or mustard might be incorporated into practice to influence clinical outcomes in respiratory tract infections.

More than just warmth-The perception of warmth and relaxation through warming compresses

OBJECTIVES

To differentiate the effect of ginger and mustard as warming ingredients from the effect of calmness & attentiveness and thermal warmth in chest compress application.

DESIGN & SETTING

In an exploratory, controlled, single-blinded study, we compared the effect of ginger and mustard in healthy adults.

INTERVENTIONS

Participants received four different chest compress types over four weeks: simple dry, hot water, with ginger powder and with mustard flour.

OUTCOME MEASURES

The somatic and psychological experience of the participants was collected through psychometric measurements (list of somatic complaints (B-L), questionnaire on mental state (MDBF), 5-point-rating scale (RS) containing eight questions on the experience of relaxation and warmth) and was further complemented through qualitative interview data.

RESULTS

Participants (15 female and 15 male) ranged between 21-36 years (M = 27). No significant changes in the B-L could be found. The MDBF found significant change towards calmness after every application (P < 0.05). Significant improvement in mood was found after the ginger compress (P = 0.00). The RS found significant changes towards relaxation (P = 0.00), emotional balance (P = 0.03), deep (P = 0.03) and slow (P = 0.00) breathing as well as warm hands (P = 0.03) and feet (P = 0.00) with the ginger compress. No significant changes on the RS could be found after the mustard compress. Qualitative-phenomenological data underlined the difference between ginger and mustard in quality of warmth. No adverse effects were reported.

CONCLUSIONS

Ginger and mustard induced a strong and lasting response on perceived distribution of warmth and relaxation. Compound effect quality could be differentiated: mustard triggered a strong relaxing effect after the intervention and ginger a warmth quality that spread throughout the body.