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RISS 인기검색어
- 검색키워드
- 저자 : Jo Juandy (검색결과 5 건)
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Juandy Jo,Astia Sanjaya,Reinhard Pinontoan,Maroloan Aruan,Rury Mega Wahyuni,Venansi Viktaria 대한백신학회 2022 Clinical and Experimental Vaccine Research Vol.11 No.1
The immunogenicity of CoronaVac among Indonesian adults at the academic premises was investigated. Two doses of CoronaVac vaccine induced a complete seroconversion on severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) naïve adults with titers of anti-SARS-CoV-2 receptor-binding domain (RBD) antibodies ranging from 9.1 to 151.9 U/mL. The median value was lower than the one observed in recovered adults with mild coronavirus disease 2019 (38.7 vs. 114.5 U/mL). Nonetheless, 93.6% of the vaccinated adults, in contrast to 76.5% of the recovered adults, displayed inhibition rates above the cut-off to block RBD-angiotensin-converting enzyme 2 binding. This suggests that two doses of CoronaVac were immunogenic and likely to be protective among Indonesian adults.
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Santi Theresia,Kamarga Lina,De Samakto Baringin,Jo Juandy 대한감염학회 2022 Infection and Chemotherapy Vol.54 No.4
It remains unknown whether the Indonesian healthcare workers (HCWs) who had received two doses of CoronaVac vaccine and one dose of mRNA-1273 booster could be protected during the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron wave. In total, 125 infection-naïve and 10 previously infected HCWs were recruited. The mRNA-1273 booster substantially increased titer of anti-SARS-CoV-2 spike protein receptor-binding domain antibodies. However, the monitoring revealed that 34 out of 125 infection-naïve (27.2%) and 3 out of 10 previously infected HCWs (30.0%) were infected during the Omicron wave. All infected HCWs were either asymptomatic or having mild coronavirus disease 2019 (COVID-19) and subsequently fully recovered, supporting the heterologous prime-boost strategy against COVID-19.
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Growth Patterns of Indonesian Infants with Cow's Milk Allergy and Fed with Soy-Based Infant Formula
Setiabudiawan, Budi,Sitaresmi, Mei Neni,Sapartini, Gartika,Sumadiono, Sumadiono,Citraresmi, Endah,Sekartini, Rini,Putra, Azwin Mengindra,Jo, Juandy The Korean Society of Pediatric Gastroenterology 2021 Pediatric gastroenterology, hepatology & nutrition Vol.24 No.3
Purpose: The use of soy-based infant formula has increased widely in infants with cow's milk allergy (CMA). This study aimed to provide evidence on the growth pattern of CMA infants fed with soy-based infant formula in an Indonesian setting. Methods: A multi-site, intervention study was conducted among full-term and normal birth weight CMA infants. Within six months, the subjects were provided with a soy-based infant formula. Weight, height, and head circumference were measured at baseline, weeks 4, 8, 12, 16, 20, and 24. Adverse events were recorded by scoring atopic dermatitis and symptom-based clinical scores. Results: Based on the World Health Organization growth chart, we found that most of subjects had normal nutritional status for weight-for-age, length-for-age, weight-for-length, and head-circumference-for-age. There were statistically significant differences between baseline and end-line for weight-for-age, length-for-age, weight-for-length, and head circumference-for-age nutritional status. No allergic symptoms or intolerance toward soy formula were observed at the end of the intervention period. Conclusion: These results show that infants fed with soy-based infant formula have a normal pattern of growth.
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Genomic Characterization and Safety Assessment of Bifidobacterium breve BS2-PB3 as Functional Food
Kristin Talia Marbun,Marcelia Sugata,Jonathan Suciono Purnomo,Dikson,Samuel Owen Mudana,Tan Tjie Jan,Juandy Jo The Korean Society for Microbiology and Biotechnol 2024 Journal of microbiology and biotechnology Vol.34 No.4
Our group had isolated Bifidobacterium breve strain BS2-PB3 from human breast milk. In this study, we sequenced the whole genome of B. breve BS2-PB3, and with a focus on its safety profile, various probiotic characteristics (presence of antibiotic resistance genes, virulence factors, and mobile elements) were then determined through bioinformatic analyses. The antibiotic resistance profile of B. breve BS2-PB3 was also evaluated. The whole genome of B. breve BS2-PB3 consisted of 2,268,931 base pairs with a G-C content of 58.89% and 2,108 coding regions. The average nucleotide identity and whole-genome phylogenetic analyses supported the classification of B. breve BS2-PB3. According to our in silico assessment, B. breve BS2-PB3 possesses antioxidant and immunomodulation properties in addition to various genes related to the probiotic properties of heat, cold, and acid stress, bile tolerance, and adhesion. Antibiotic susceptibility was evaluated using the Kirby-Bauer disk-diffusion test, in which the minimum inhibitory concentrations for selected antibiotics were subsequently tested using the Epsilometer test. B. breve BS2-PB3 only exhibited selected resistance phenotypes, i.e., to mupirocin (minimum inhibitory concentration/MIC >1,024 ㎍/ml), sulfamethoxazole (MIC>1,024 ㎍/ml), and oxacillin (MIC >3 ㎍/ml). The resistance genes against those antibiotics, i.e., ileS, mupB, sul4, mecC and ramA, were detected within its genome as well. While no virulence factor was detected, four insertion sequences were identified within the genome but were located away from the identified antibiotic resistance genes. In conclusion, B. breve BS2-PB3 demonstrated a sufficient safety profile, making it a promising candidate for further development as a potential functional food.
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Theresia Santi,Veli Sungono,Lina Kamarga,Baringin De Samakto,Ferry Hidayat,Feronica Kusuma Hidayat,Magy Satolom,Anita Permana,Irawan Yusuf,Ivet Marita Suriapranata,Juandy Jo 대한백신학회 2022 Clinical and Experimental Vaccine Research Vol.11 No.2
Purpose: This study was performed to investigate humoral immune response and adverse events upon the heterologous prime-boost with a single dose of the mRNA-1273 vaccine among fully CoronaVac-vaccinated, infection-naïve healthcare workers in Indonesia. Materials and Methods: One hundred twenty-five eligible healthcare workers were recruited from one hospital for this prospective cohort study. Blood collection was conducted twice, i.e., on 7 days before and 28 days after the booster vaccination. The titer of anti-SARS-CoV-2 receptor-binding domain (RBD) antibodies was quantified accordingly. The post-vaccination adverse event was recorded for both CoronaVac and mRNA-1273 vaccinations. Any breakthrough infection was monitored during the follow-up period. Wilcoxon matched-pairs signed rank test was used to test differences between groups. Results: A significant increase was observed in the titer of anti-SARS-CoV-2 RBD antibodies upon receiving the mRNA-1273 booster (geometric mean titers of 65.57 and 47,445 U/mL in pre- and post-booster, respectively), supporting the argument to use heterologous prime-boost vaccination to improve the protection against COVID-19 in a high-risk population. The mRNA-1273 vaccine, however, caused a higher frequency of adverse events than the CoronaVac vaccine. Nonetheless, the adverse events were considered minor medical events and temporary as all subjects were not hospitalized and fully recovered. Of note, no breakthrough infection was observed during the follow-up to 12 weeks post-booster. Conclusion: The heterologous prime-boost vaccination of healthcare workers with a single dose of the mRNA-1273 vaccine generated a significant elevation in humoral immune response towards RBD of SARS-CoV-2 and was associated with a higher frequency, but minor and transient, adverse events.
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