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All Journal Biosaintifika: Journal of Biology & Biology Education Berkala Bioteknologi Health and Medical Journal
Setiawan, Ruby
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Health Professions Immunology & microbiology Medicine & Pharmacology Public Health

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Screening of Bacteria Producing Asparaginase Free of Glutaminase and Urease from Hot Springs in West Sulawesi Setiawan, Ruby; Larasati, Dinar Rahmi
Biosaintifika: Journal of Biology & Biology Education Vol 11, No 2 (2019): August 2019
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (446.129 KB) | DOI: 10.15294/biosaintifika.v11i2.17435

Abstract

L-asparaginase catalyzes the hydrolysis of asparagine into ammonia and aspartate. It has been used in chemotherapy for patients with acute lymphoblastic leukemia. L-asparaginase presents in animal, plant and microorganism. Long-term application of this enzyme can induce neurotoxicity due to the affinity towards glutamine and urea. The aim of this research was to find new source of glutaminase and urease-free asparaginase from bacteria. Bacteria were isolated from hot springs located in West Sulawesi using R2A media. The identification was employed by amplifying 16S rRNA gene. Screening of asparaginase was conducted using asparagine as single source of Nitrogen. Out of 21 isolates, 76% were Gram-negatives from the genus of Pseudomonas, Acinetobacter, Bosea, Caulobacter, Sphingomonas and Novosphingobium, while the rest of them were Gram-positives from the genus of Mycobacterium, Brachybacterium, Rhodococcus, and Staphylococcus. Twelve isolates which showed asparaginase activity were Caulobacter flavus HS1YWS2 and HS1XWS3, Acinetobacter sp. HS2XWS5, HS2XWS6, HS2XWS8, HS2YWS11, HS2YWS12, HS2YWS13, HS2ZWS14, HS2ZWS15 and HS2ZWS16. Isolates HS1YWS2 and HS1XWS3 were free of glutaminase and urease and showed the highest activity. This study was the first report of asparaginase activity from Caulobacter flavus. This result can further be used to explore the ability of asparaginase free of glutaminase and urease to treat acute lymphoblastic leukemia.
Screening and Characterization of L-Asparaginase Free L-Glutamianse Produced by Marine Bacterial Isolates Larasati, Dinar Rahmi; Setiawan, Ruby; Wijarnaka, Wijarnaka; Pujiyanto, Sri
Berkala Bioteknologi Vol. 6, No. 2, November 2023
Publisher : Berkala Bioteknologi

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L-asparaginase (EC 3.5.1.1) is a potential pharmaceutical enzyme for ALL (Acute Lymphoblastic Leukemia) treatment. However, it can cause side effects due to the activity of enzyme L-glutaminase. Halophilic microorganisms might be potential source of the enzyme L- asparaginase free of L-glutaminase because of these microorganism are adapted to extreme environments which producing biocatalysts with different structures. The enzyme was screened from marine bacterial isolated from surface sea water and marine sediment. The enzyme was produced and characterized for optimum temperature, pH, and the effect of metal ions. The results showed that a total of 96 marine bacterial isolates, three isolates namely Pseudomonas stutzeri, Marinobacter nitratireducens, Vibrio neocaledonicus were detected by producing L asparaginase free L-glutaminase. The highest activity was produced by Marinobacter nitratireducens, 0.887 U/ml. Enzyme production at the 60 hours showed the highest enzyme activity 1,625 U/ml and specific activity 1,700 U/mg. The maximum L-asparaginase activity occurs at temperature 40 °C and pH 8 of Tris HCl buffer. The relative activity of enzymes decreases due to the presence of metal ion K+ 5 mM, and Mg2 +, Ni2+, Cu2+, Zn2+ 1 mM and 5 mM.
Diagnostic Value of Saliva RT-PCR Test within Suspected SARS-CoV-2 Cases in Indonesia Putra, Andika Chandra; Zaini, Jamal; Ridwanuloh, Asep Muhammad; Nugroho, Herjuno Ari; Setyawan, Ryan Haryo; Idris, Idris; Setiawan, Ruby; Sushadi, Pangda Sopha; Wulandari, Ari Sulistyo; Zannati, Anky; Indriawati, Indriawati; Erdayani, Eva; Wahyuni, Wahyuni; Agustiyanti, Dian Fitria; Wisnuwardhani, Popi Hadi; Saniyyah, Zahrah; Azika, Wira Norman; Haryanto, Budi; Utomo, Ahmad Rusdan Handoyo; Ningrum, Ratih Asmana
Health and Medical Journal Vol 6, No 2 (2024): HEME May 2024
Publisher : Universitas Baiturrahmah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33854/heme.v6i2.1494

Abstract

Introduction: The ongoing SARS-CoV-2 pandemic has profoundly emphasized the pressing need for accurate and reliable diagnostic procedures. Given the potential health risks associated with nasopharyngeal swabs, there has been growing interest in seeking alternative diagnostic mediums. In this context, our study delved into evaluating saliva as a potential diagnostic tool, simultaneously assessing its efficiency in relation to patient demographics and their exhibited clinical symptoms. Methods: Spanning from May to December 2020, we conducted a comprehensive cross-sectional analysis. We meticulously examined medical records to gather insights on patient characteristics, existing health conditions, onset of symptoms, clinical manifestations, and compared the results obtained from both salivary and nasopharyngeal RT-PCR tests for SARS-CoV-2. Results: Among the individuals suspected of SARS-CoV-2 infection, the mean age stood at 52.4 years, with males representing 60.3% of this group. Interestingly, a significant 76.9% reported underlying health conditions, predominantly hypertension and diabetes. The most commonly reported symptoms encompassed respiratory challenges, notably coughing and shortness of breath, succeeded by symptoms like nausea, fever, and a general sense of fatigue. The performance of saliva tests, in terms of accuracy, appeared to be significantly influenced by the timing of symptom emergence. Conclusion: The RT-PCR tests utilizing saliva samples demonstrated considerable promise, especially during the early stages of symptom manifestation, providing a reliable alternative to traditional nasopharyngeal swabs. The findings suggest a superior diagnostic sensitivity when utilizing saliva during the initial phases of a SARS-CoV-2 infection.
Co-Authors Agustiyanti, Dian Fitria Anky Zannati Azika, Wira Norman Budi Haryanto Erdayani, Eva Herjuno Ari Nugroho, Herjuno Ari Idris Idris Indriawati, Indriawati Larasati, Dinar Rahmi Larasati, Dinar Rahmi Popi Hadi Wisnuwardhani, Popi Hadi Putra, Andika Chandra RATIH ASMANA NINGRUM Ridwanuloh, Asep Muhammad Saniyyah, Zahrah Setyawan, Ryan Haryo Sri Pujiyanto Sushadi, Pangda Sopha Utomo, Ahmad Rusdan Handoyo wahyuni wahyuni Wijarnaka, Wijarnaka Wulandari, Ari Sulistyo Zaini, Jamal