Symbiotic: The synbiotic used will be Simbioflora® (commercial preparation containing 5.5g of FOS added with four species of probiotic, Lactobacillus paracasei LPC-31; Lactobacillus rhamnosus HN001; Lactobacillus acidophilus NCFM; Bifidobacterium lactis HN019, at a concentration of 109 UFC per strain) supplied by Farmoquímica S.A. Supplementation will be administered orally, twice a day, before lunch and dinner, for ten days before chemotherapy treatment. Patients will be guided by researchers on dilution (100 mL of filtered water) and the correct purchase of the modules. Consumption control will be carried out daily, via telephone contact.
Maltodextrin: Maltodextrin, used as control, will be purchased from the company PRODIET® under the trade name Carboch®. Supplementation will be administered orally, twice a day, before lunch and dinner, for ten days before chemotherapy treatment. Patients will be guided by researchers on dilution (100 mL of filtered water) and the correct purchase of the modules. Consumption control will be carried out daily, via telephone contact.
Study summary
Introduction: In the 2023-2025 period, colorectal cancer (CRC) will be the third most common type of cancer in Brazil. The most commonly used therapeutic approaches are chemotherapy (QTx) and radiotherapy (RTx). QTx agents, such as capecitabine, affect both malignant cells and normal cells such as gastrointestinal, capillary and immune cells. Cellular damage in the gastrointestinal tract (GIT) results in various symptoms, such as mucositis and diarrhea. Diarrhea is linked to mucosal damage and can result in dehydration, malnutrition and hospitalization, leading to cardiovascular complications and death. Mucositis is inflammation that affects the GIT. This condition makes treatment difficult, leading to reductions, delays or interruption of QTx. These scenarios harm the patient's prognosis and quality of life, resulting in high costs for symptom control, nutritional assistance, management of secondary infections and hospitalization. The Mucositis Study Group (MASCC/ISOO) guidelines recommend the use of probiotics as a preventive measure against diarrhea in cancer patients undergoing QTx and/or RTx. However, the safety of using probiotics in immunosuppressed patients is still controversial and hypotheses are based on epidemiological and experimental studies. This makes it necessary to evaluate whether supplementation with pro- or synbiotics before chemotherapy would have the same beneficial results. Objective: To evaluate the effect of synbiotic supplementation on the prevention, incidence and severity of mucositis in cancer patients undergoing QTx. Method: This is a single-center parallel double-masked randomized clinical trial to be carried out at the Borges da Costa/UFMG Outpatient Clinic at Hospital das Clínicas in Belo Horizonte - Minas Gerais (HC-BH/MG). The inclusion criteria are patients diagnosed with CRC eligible for first-line treatment with Capecitabine, aged ≥ 18 years, both sexes, signed the informed consent form. The study was approved by CEP-UFMG. Expected results: It is expected that supplementation with synbiotics in the pre-QTx period will promote modulation of the microbiota and strengthening of the intestinal barrier, resulting in a lower incidence and severity of mucositis and diarrhea, improving the quality of life of these patients.
Eligibility
Sex
ALL
Min age
18 Years
Max age
—
Healthy volunteers
No
Inclusion Criteria:
* Colorectal tumor in the first oncological treatment
* Age over 18 years old
* Both sexes
* Eligible for protocol with capecitabine alone or associated with oxaliplatin
* Patients WITHOUT colostomy or WITH colostomy in the transverse/descending/sigmoid region
* Patient undergoing Radiotherapy treatment associated with Chemotherapy
* Patients residing in Belo Horizonte and the metropolitan region
* Patients who Accept and sign the Informed Consent Form (TCLE)
Exclusion Criteria:
* Diagnosis of gastrointestinal carcinoid and stromal tumor (GIST)
* Patients with Ileostomy
* Patients with colostomy in the ascending region of the colon
* Inflammatory bowel diseases: Crohn's and Colitis
* Use of antibiotics and antifungals in the last 15 days
* Use of prebiotic/probiotic and/or synbiotic in the last 15 days
* Use of antidiarrheal medication in the last 15 days
* Presence of fever and mucus discharge
* Pregnant or breastfeeding women
* Patients who refuse to participate in the study.
Primary outcome measure(s)
Intestinal Microbiota — six months after collecting data from all research participants Fecal calprotectin measured by ELISA.
Intestinal Microbiota — six months after collecting data from all research participants production of short-chain fatty acids.
Intestinal Microbiota — six months after collecting data from all research participants analysis of intestinal microbiota composition by sequencing the 16S rRNA gene.
Clinical Nutritional Diagnostic — six months after collecting data from all research participants Body mass index BMI in kg/m²
Nutritional Diagnostic — six months after collecting data from all research participants body weight in kg
Nutritional Diagnostic — six months after collecting data from all research participants height in m
Nutritional Diagnostic — six months after collecting data from all research participants circumferences in cm
Nutritional Diagnostic — six months after collecting data from all research participants body composition via triceps skin fold thickness in mm
Nutritional Diagnostic — six months after collecting data from all research participants hand grip resistance assessed by dynamometry in kg
Nutritional Diagnostic — six months after collecting data from all research participants Food Frequency Questionnaire
Nutritional Diagnostic — six months after collecting data from all research participants 24-hour recall
Effect of the synbiotic in pain — six months after collecting data from all research participants Visual Analogue Score for Pain using the Visual Analogue Scale
inflammatory marker — six months after collecting data from all research participants Blood samples for Tumor Necrosis Factor TNF in pg/mL
inflammatory marker — six months after collecting data from all research participants Fatty Acid Binding Protein FABP2 in ng/mL
inflammatory marker — six months after collecting data from all research participants Lipopolysaccharide Binding Protein LBP in µg/mL
inflammatory marker — six months after collecting data from all research participants Lipopolysaccharide LPS in µg/mL
inflammatory marker — six months after collecting data from all research participants leukogram White Blood Cell Count in cells/µL
Questionnaire to assess quality of life — six months after collecting data from all research participants EORTC QLQ-C30 for all cancer patients
Questionnaire to assess quality of life — six months after collecting data from all research participants EORTC QLQ-CR29 for colorectal cancer patients
Trial sites (1)
Facility
City
Region
Status
Escola de Enfermagem - UFMG
Belo Horizonte
Minas Gerais
Recruiting
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This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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