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All Journal Bioscientia Medicina : Journal of Biomedicine and Translational Research Bioscientia Medicina : Journal of Biomedicine and Translational Research
M Iqbal Rivai
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Biochemistry, Genetics & Molecular Biology Immunology & microbiology Medicine & Pharmacology Neuroscience

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Synergistic Attenuation of the TNF-α/NF-κB Inflammatory Axis in Colorectal Carcinogenesis: Lactococcus lactis D4 as a Mucosal-Protective Adjuvant to Capecitabine Leonard Khriestsandi Saleh; M Iqbal Rivai; Rini Suswita; Irwan; Avit Suchitra
Bioscientia Medicina : Journal of Biomedicine and Translational Research Vol. 10 No. 4 (2026): Bioscientia Medicina: Journal of Biomedicine & Translational Research
Publisher : HM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37275/bsm.v10i4.1571

Abstract

Background: Capecitabine serves as a standard chemotherapeutic agent for colorectal cancer, but its clinical efficacy is frequently hindered by severe gastrointestinal toxicity and incomplete suppression of the inflammatory tumor microenvironment. We evaluated the synergistic potential of Lactococcus lactis D4, a probiotic strain isolated from traditional fermented buffalo milk, as an immunonutritional adjuvant to Capecitabine in a 1,2-dimethylhydrazine-induced colorectal cancer rat model. Methods: Sprague-Dawley rats were maintained on a standardized AIN-93G diet and induced with 1,2-dimethylhydrazine. Animals were randomized into Negative Control, Cancer Control, L. lactis D4 monotherapy, Capecitabine monotherapy, and Combination therapy. Treatments were administered for 14 days. We assessed cachexia, macroscopic microadenoma multiplicity, and TNF-α expression utilizing immunohistochemistry. Synergy was mathematically validated using the Coefficient of Drug Interaction. Results: The Combination group significantly prevented chemotherapy-induced cachexia, demonstrating a 2.1% weight gain compared to a 4.5% weight loss in the Capecitabine monotherapy group (p < 0.05). Macroscopic microadenomas were rapidly reduced in the combination group. Furthermore, the combination therapy synergistically suppressed colonic TNF-α protein expression (Coefficient of Drug Interaction = 0.83). Additionally, L. lactis D4 entirely mitigated capecitabine-induced mucositis. Conclusion: L. lactis D4 functions as a highly potent adjuvant to Capecitabine. It prevents cachexia, protects mucosal architecture, and exerts a mathematically proven synergistic suppression of the TNF-α inflammatory axis.
Evaluating the Indigenous Probiotic Lactococcus lactis D4 as an Adjuvant to Capecitabine: Modulation of NF-κB in a Colorectal Carcinogenesis Model Arli Suryawinata; M Iqbal Rivai; Rini Suswita; Irwan; Avit Suchitra; Raflis Rustam
Bioscientia Medicina : Journal of Biomedicine and Translational Research Vol. 10 No. 5 (2026): Bioscientia Medicina: Journal of Biomedicine & Translational Research
Publisher : HM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37275/bsm.v10i5.1572

Abstract

Background: Chronic inflammation driven by the nuclear factor kappa-B (NF-κB) signaling pathway is a fundamental driver of colorectal cancer (CRC) pathogenesis, promoting tumor survival, mucosal proliferation, and profound chemoresistance. Capecitabine is a standard first-line fluoropyrimidine chemotherapy; however, its clinical utility is frequently compromised by dose-limiting toxicities and the activation of inflammatory feedback loops. Lactococcus lactis D4, a novel probiotic strain isolated from traditional Indonesian fermented buffalo milk (dadih), possesses well-documented immunomodulatory properties. Methods: A randomized controlled experimental study was conducted utilizing male Sprague-Dawley rats (n=37). Colorectal carcinogenesis was chemically induced via intraperitoneal administration of 1,2-dimethylhydrazine (DMH). Following strict histopathological confirmation of malignancy, the cohort was randomized into five distinct groups: Negative Control, Positive Control, L. lactis D4 monotherapy, Capecitabine monotherapy, and Combination therapy. Interventions were administered daily for 14 days. Outcomes included NF-κB protein expression assessed via immunohistochemistry (IHC) and targeted gene expression quantification via RT-qPCR. Results: Immunohistochemical analysis demonstrated that the positive control group exhibited significantly elevated NF-κB protein expression (35.87 ± 13.53%). Capecitabine monotherapy significantly reduced this expression to 16.07 ± 3.79% (p=0.003). The Combination therapy achieved a profound reduction in NF-κB protein expression down to 12.99 ± 4.92%; however, this was not statistically superior to Capecitabine alone (p=1.000). Conversely, RT-qPCR analysis revealed no statistically significant difference in NF-κB mRNA levels among the experimental groups (p=0.094). Conclusion: The combination of L. lactis D4 and Capecitabine effectively reduces NF-κB protein expression in a preclinical CRC model, achieving suppression levels comparable to primary chemotherapy. The distinct discordance between the significant protein suppression and the sustained mRNA expression levels suggests potential post-transcriptional or post-translational regulatory mechanisms that warrant further targeted molecular investigation.
Synergistic Attenuation of the TNF-α/NF-κB Inflammatory Axis in Colorectal Carcinogenesis: Lactococcus lactis D4 as a Mucosal-Protective Adjuvant to Capecitabine Leonard Khriestsandi Saleh; M Iqbal Rivai; Rini Suswita; Irwan; Avit Suchitra
Bioscientia Medicina : Journal of Biomedicine and Translational Research Vol. 10 No. 4 (2026): Bioscientia Medicina: Journal of Biomedicine & Translational Research
Publisher : HM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37275/bsm.v10i4.1571

Abstract

Background: Capecitabine serves as a standard chemotherapeutic agent for colorectal cancer, but its clinical efficacy is frequently hindered by severe gastrointestinal toxicity and incomplete suppression of the inflammatory tumor microenvironment. We evaluated the synergistic potential of Lactococcus lactis D4, a probiotic strain isolated from traditional fermented buffalo milk, as an immunonutritional adjuvant to Capecitabine in a 1,2-dimethylhydrazine-induced colorectal cancer rat model. Methods: Sprague-Dawley rats were maintained on a standardized AIN-93G diet and induced with 1,2-dimethylhydrazine. Animals were randomized into Negative Control, Cancer Control, L. lactis D4 monotherapy, Capecitabine monotherapy, and Combination therapy. Treatments were administered for 14 days. We assessed cachexia, macroscopic microadenoma multiplicity, and TNF-α expression utilizing immunohistochemistry. Synergy was mathematically validated using the Coefficient of Drug Interaction. Results: The Combination group significantly prevented chemotherapy-induced cachexia, demonstrating a 2.1% weight gain compared to a 4.5% weight loss in the Capecitabine monotherapy group (p < 0.05). Macroscopic microadenomas were rapidly reduced in the combination group. Furthermore, the combination therapy synergistically suppressed colonic TNF-α protein expression (Coefficient of Drug Interaction = 0.83). Additionally, L. lactis D4 entirely mitigated capecitabine-induced mucositis. Conclusion: L. lactis D4 functions as a highly potent adjuvant to Capecitabine. It prevents cachexia, protects mucosal architecture, and exerts a mathematically proven synergistic suppression of the TNF-α inflammatory axis.
Evaluating the Indigenous Probiotic Lactococcus lactis D4 as an Adjuvant to Capecitabine: Modulation of NF-κB in a Colorectal Carcinogenesis Model Arli Suryawinata; M Iqbal Rivai; Rini Suswita; Irwan; Avit Suchitra; Raflis Rustam
Bioscientia Medicina : Journal of Biomedicine and Translational Research Vol. 10 No. 5 (2026): Bioscientia Medicina: Journal of Biomedicine & Translational Research
Publisher : HM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37275/bsm.v10i5.1572

Abstract

Background: Chronic inflammation driven by the nuclear factor kappa-B (NF-κB) signaling pathway is a fundamental driver of colorectal cancer (CRC) pathogenesis, promoting tumor survival, mucosal proliferation, and profound chemoresistance. Capecitabine is a standard first-line fluoropyrimidine chemotherapy; however, its clinical utility is frequently compromised by dose-limiting toxicities and the activation of inflammatory feedback loops. Lactococcus lactis D4, a novel probiotic strain isolated from traditional Indonesian fermented buffalo milk (dadih), possesses well-documented immunomodulatory properties. Methods: A randomized controlled experimental study was conducted utilizing male Sprague-Dawley rats (n=37). Colorectal carcinogenesis was chemically induced via intraperitoneal administration of 1,2-dimethylhydrazine (DMH). Following strict histopathological confirmation of malignancy, the cohort was randomized into five distinct groups: Negative Control, Positive Control, L. lactis D4 monotherapy, Capecitabine monotherapy, and Combination therapy. Interventions were administered daily for 14 days. Outcomes included NF-κB protein expression assessed via immunohistochemistry (IHC) and targeted gene expression quantification via RT-qPCR. Results: Immunohistochemical analysis demonstrated that the positive control group exhibited significantly elevated NF-κB protein expression (35.87 ± 13.53%). Capecitabine monotherapy significantly reduced this expression to 16.07 ± 3.79% (p=0.003). The Combination therapy achieved a profound reduction in NF-κB protein expression down to 12.99 ± 4.92%; however, this was not statistically superior to Capecitabine alone (p=1.000). Conversely, RT-qPCR analysis revealed no statistically significant difference in NF-κB mRNA levels among the experimental groups (p=0.094). Conclusion: The combination of L. lactis D4 and Capecitabine effectively reduces NF-κB protein expression in a preclinical CRC model, achieving suppression levels comparable to primary chemotherapy. The distinct discordance between the significant protein suppression and the sustained mRNA expression levels suggests potential post-transcriptional or post-translational regulatory mechanisms that warrant further targeted molecular investigation.
Co-Authors Arli Suryawinata Avit Suchitra Irwan Leonard Khriestsandi Saleh Raflis Rustam Suswita, Rini