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Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences
Published by Universitas Brawijaya
ISSN : 20875517     EISSN : 25274376     DOI : -
Core Subject : Agriculture, Social,
Agriculture, Biological Sciences & Forestry Environmental Science
The Journal of Tropical Life Science (JTLS) provides publication of full-length papers, short communication and review articles describing of new finding or theory in living system, cells and molecular level in tropical life science and related areas. The journal publishes articles that report novel findings of wide Tropical Life system phenomenon in the areas of biodiversity, agriculture, fisheries, health, husbandry, forestry and environmental technology. JTLS has 1 volume with 3 issues per year.
Arjuna Subject : -
Articles 14 Documents
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Search results for , issue "Vol. 6 No. 3 (2016)" : 14 Documents clear
Secretory Leukocyte Protease Inhibitor (SLPI) Decreased the Celluler Expression of NF-Kβ and IL-1β on Wound Macrophages of Rattus novergicus Post Tooth Extraction Agustine Hanafi Putri; Abdur Razaq Komaruzzaman; Putri Noerpuspita; Delfi Fitriyani; Nur Permatasari; Edi Widjajanto
Journal of Tropical Life Science Vol. 6 No. 3 (2016)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.06.03.05

Abstract

Prevalence of tooth extraction or dental surgery was 48.5% of all dental care in Indonesia. Tooth extraction carries potential health risks and side effects such as pain, swelling, trismus and dysfunction of the oral cavity during recovery. Secretory leukocyte protease inhibitor (SLPI) is one of innate immunity proteins that can inhibit the activation of macrophages. We are expecting the provision of SLPI can decrease excessive inflammatory response in healing after tooth extraction. This study was to investigate the administration of SLPI on cellular expression of NF-Kβ and IL-1β on wound macrophages of Rattus novergicus post tooth extraction. The research design is in vivo experimental study. In total, 20 rats were randomly divided into four groups (each group n=5) and underwent tooth extraction on left incisor teeth of mandible. One of the groups did not receive SLPI administration (control group) and the socket was stitched after tooth extraction. Meanwhile, the remaining three groups (experimental groups) were given SLPI administration after tooth extraction with three different doses (0.1 µM, 0.5 µM and 2.5 µM, respectively). After SLPI administration, the socket of experimental groups was stitched. The effects of SLPI administration were evaluated by counting at the percentage of NF-Kβ translocation and the expression of expression of IL-1 in macrophages cells of the rat socket using immunohistochemistry analysis. The cellular expression of NF-Kβ and IL-1β were significantly decreased (p < 0.05) on groups with SLPI may decrease cellular expression of NF-Kβ and IL-1β on wound macrophages cells of rats post tooth extraction in a dosedependent manner.
Toxicity and Lethality Evaluations of Koordersiodendron pinnatum Leaves Methanolic Extract in DDY Mice Sofna Dewita Sari Banjarnahor; Indah Dwiatmi Dewijanti; Marissa Angelina; Sofa Fajriah
Journal of Tropical Life Science Vol. 6 No. 3 (2016)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.06.03.10

Abstract

The study of toxic features of Koordersiodendron pinnatum is vital for further studies of its pharmacological activities. Acute toxicity test was done on methanolic extracts of K. pinnatum in DDY mice. Animals were grouped into five: Group 1 was given 1 mL solution of 2.5% Tween 80 in a single oral dose; the remaining groups were orally given a single dose of 2, 4, 8 and 16 g/kg of K. pinnatum, respectively. Toxic effects of the extract were evaluated on the basis of behavioral observations in the form of locomotor activity; curiosity; defecation; urination and also animal mortality. Observations were carried out for 14 days. No significant changes on body weight, and behavioural activities were recorded. Mortality was recorded up to 2% of the male group, and no mortality within the female group. The extract is practically non toxic for both male and female (LD50>15 g/kg).
Isolation and Screening of Potential Cellulolytic and Xylanolytic Bacteria from Soil Sample for Degradation of Lignocellulosic Biomass Bhupal Govinda Shrestha; Sanjaya Ghimire; Shakep Bhattarai; Sailesh Phuyal; Bimal Thapa
Journal of Tropical Life Science Vol. 6 No. 3 (2016)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.06.03.06

Abstract

Cellulolytic/Xylanolytic microorganisms such as bacteria and fungi are accountable for conversion of lignocellulosic biomass in soil. Despite this vast number of cellulose/xylanase producers, there is a deficiency of microorganisms that can produce a significant amount of cellulase/xylanase enzyme to proficiently degrade cellulose/xylan to fermentable sugars. Although bacteria have extremely high natural diversity, which bestowsthem with the aptitude to produce stable enzymes, little emphasis has been given to cellulose/xylanase production from bacteria. Seven soil samples were collected from eastern hilly districts of Nepal viz. Taplejung, Panchthar and Sankhuwasabha districts, from soil surface and at depth of 10cm to 20cm, and were isolated separately. From the seven soil samples, four bacterial isolates were obtained. Isolates (PSS, P1D, TLC, SNK) were then screened for cellulolytic/xylanolytic activity using Congo red assay on Carboxymethylcellulose (CMC)/xylan agar plates. The enzyme activity obtained from isolates was dependent on substrate concentration. The activity of enzymes produced by isolates were also measured and compared on pretreated sugarcane bagasse. Among those samples, the greatest zone of inhibition in both CMC (1.3 cm) and xylan (1.0 cm) agar media was seen in isolate P1D. It also produced the highest activity of endoglucanase and xylanase i.e. activity 0.035 U/mL and 0.050 U/mL respectively at 0.010 mg mL-1 standard substrate concentration of CMC and xylan. 
Baculovirus Surface Display Using Infuenza Neuraminidase (NA) Transmembrane Anchor Irisa Trianti; Saengchai Akeprathumchai; Phenjun Mekvichitsaeng; Kanokwan Poomputsa
Journal of Tropical Life Science Vol. 6 No. 3 (2016)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.06.03.12

Abstract

Baculovirus surface display has been employed as an excellent tools for presentation of foreign peptides and proteins on virus surface with native conformation, functions and immunogenicity. A baculovirus major envelope protein, gp64, or a capsid protein, vp39 are generally used as fusion partners for displaying of polypeptides on the surface of virions. Alternatively, a membrane anchoring domain of vesicular stomatitis virus G protein (VSV-G) can also be used. In this study, an influenza neuraminidase (NA) was proposed as a new membrane anchor for the display of Angiotensin II (AngII), DRVYIHPFHL, peptides. The AngII peptides were inserted into NA by replacing NA amino acid number 60-67 with AngII, and then integrated into a baculovirus genome. A recombinant baculovirus expressing the NA fusion-AngII peptides was generated from infected insect cells. Those peptides were found to express and translocated on the membrane of the baculovirus infected insect cell (Sf9 cell) as detected by immunocytochemistry using anti-AngII monoclonal antibody. Upon budding of the recombinant baculovirus progenies through the insect cells membrane, the recombinant NA-AngII peptides was acquired to envelopes of the new baculovirus progenies. The conformation of NA on baculovirus surface was not affected by the deletion, as the 55 kDa band of NA can be detected from Western Blotting analysis by specific anti-NA monoclonal antibody. In addition, the same protein was also found by anti-AngII antibody indicating that the AngII peptides had been successfully fused with the recombinant NA. Interestingly, electron microscopy analysis demonstrated that not only the recombinant baculovirus displaying AngII peptides were generated by infected insect cells, but also the NA virus-like-particle displaying AngII peptides.

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