Side-Effect, Vaccine Adverse Reaction
Conditions
Keywords
COVID-19, Vaccine Adverse Reaction, Side Effect, Inflammation, Pain, Mulberry, IL-17
Brief summary
Urgent vaccine development plus the characteristics of the coronavirus have caused the relatively more safety problems in COVID-19 vaccines than other classic vaccines and unavoidably raises more concerns among those who accept or consider to be vaccinated. Mulberry juice consists of a large amount of anthocyanin. The abnormally high interleukin-17A level is frequently seen in patients with inflammation status or diseases with inflammation features. Some specific anthocyanins can reduce cyclooxygenase and nitrogen oxide, and the pharmacological effect of the major anthocyanin in mulberry juice imitates that of interleukin-17A antagonists. These features make mulberry juice a potential crude material for reducing inflammation and pain induced by COVID-19 vaccinations. The investigators propose a randomized control trial to explore the dose-response effects of three different volumes of mulberry juice on the incidence and severity of COVID-19 induced side effects. The findings should be helpful for nutrition supplementation in COVID-19 vaccinations and may improve public coordination of COVID-19 vaccinations.
Detailed description
Since the outbreak of Coronavirus Disease-2019 (COVID-19), the size of the infected population continues to expand, and the number of deaths due to the infection continues to climb. Massive vaccination has become the most critical measure to control the pandemic. Vaccination may cause side effects. Urgent vaccine development plus the characteristics of the coronavirus have caused the relatively more safety problems in COVID-19 vaccines than other classic vaccines and unavoidably raises more concerns among those who accept or consider to be vaccinated. Mulberry juice consists of a large amount of anthocyanin. The abnormally high interleukin-17A level is frequently seen in patients with inflammation status or diseases with inflammation features. Previous cell and animal studies have shown that some specific anthocyanins can reduce cyclooxygenase and nitrogen oxide, and the pharmacological effect of the major anthocyanin in mulberry juice imitates that of interleukin-17A antagonists. These features make mulberry juice a potential crude material for reducing inflammation and pain induced by COVID-19 vaccinations. The investigators propose a randomized control trial investigating the dose-response effects of three different volumes of mulberry juice on the incidence and severity of COVID-19 induced side effects and build up initial dose-response models for future reference in nutrition supplementation in COVID-19 vaccinations and improve public coordination of COVID-19 vaccinations.
Interventions
DIETARY_SUPPLEMENTMulberry juice
Mulberry is a common macrophanerophyte that can be found in fields or farms. Mulberry fruits contain a large amount of anthocyanins and a relatively small amount of pro-anthocyanins. The plant is easy to grow and the fruit price is low compared with other types of plants producing anthocyanins, and thus a reliable source for anthocyanin supplements. Current laboratory evidence has shown that specific anthocyanins can reduce inflammation status, and potentially thrombosis. One of the enzymes inhibited by specific anthocyanins is cyclooxygenase which catalyzes the synthesis of prostanoids, including thromboxane and prostaglandins. Moreover, a critical study has shown that cyanidin 3-O-glucoside, the main anthocyanin in mulberry fruit, is an allosteric regulator of interleukin-17A.
Sponsors
Taipei Medical University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
DOUBLE (Subject, Outcomes Assessor)
Masking description
The participants are told that they would receive a cup of mulberry juice in which the volume is randomized, without knowing the exact dose range.
Intervention model description
Participants are divided into three groups, namely, the low dose group (10 ml), middle dose group (50 ml), and high dose group (100 ml).
Eligibility
Sex/Gender
ALL
Age
20 Years to 65 Years
Healthy volunteers
Yes
Inclusion criteria
* Concious * Mentally capable * Can comunicate using Mendalin or Taiwanese dialet * Agree to join the current trial
Exclusion criteria
* Unable to read the google sheets * dysphagia * \> 65 years
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change of body temperature | Up to four days | Daily body temperature of each participant is recorded to obtain serial temperatures including body temperature before vaccination (first day) and body temperatures after vaccination (second, third, and fourth day). |
| Number of participants with fever | Up to four days | Event of 38 degrees celsius or above |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Number of participants with sign cluster 1 (multiple choices) | Up to three days | Redness, swelling, pain, lump or mass, or rash and itching at the injection site; axillary swelling and tenderness at the injection arm; axillary swelling and tenderness at the non-injection arm; none |
| Number of participants with sign cluster 2 (multiple choices) | Up to three days | Chills, headache, muscle pain, joint pain, fatigue, rash on the body, asthma or breathing difficulty, loss of appetite, nausea or vomiting, diarrhea, stomach ache, insomnia, or drownsiness; none |
Contacts
Primary ContactEl-Wui Loh, PhD
Backup ContactYun-Yun Chou, Msc
Outcome results
None listed