BIOREpository (Faculty of Biology, University of Belgrade)
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Metal contents in vegetables originating from coal fired thermal power plants region
No full textProceedings, 547M3
Physically Crosslinked Poly(methacrylic acid)/Gelatin Hydrogels with Excellent Fatigue Resistance and Shape Memory Properties
No full textHydrogels endure various dynamic stresses, demanding robust mechanical properties.
Despite significant advancements, matching hydrogels’ strength to biological tissues and plastics
is often challenging without applying potentially harmful crosslinkers. Using hydrogen bonds as
sacrificial bonds offers a promising strategy to produce tough, versatile hydrogels for biomedical
and industrial applications. Poly(methacrylic acid) (PMA)/gelatin hydrogels were synthesized by
thermally induced free-radical polymerization and crosslinked only by physical bonds, without
adding any chemical crosslinker. The addition of gelatin increased the formation of hydrophobic
domains in the structure of the hydrogels, which acted as permanent crosslinking points. The increase
in PMA and gelatin contents generally led to a lower equilibrium water content (WC), higher thermal
stability and better mechanical properties. The values of tensile strength and toughness reached
up to 1.44 ± 0.17 MPa and 4.91 ± 0.51 MJ m−3
, respectively, while the compressive modulus and
strength reached up to 0.75 ± 0.06 MPa and 24.81 ± 5.85 MPa, respectively, with the WC being
higher than 50 wt.%. The obtained values for compressive mechanical properties are comparable
with super-strong hydrogels reported in the literature. In addition, hydrogels exhibited excellent
fatigue resistance and biocompatibility, as well as great shape memory properties, which make them
prominent candidates for a wide range of biomedical applications.M214.644410
Use of growth-promoting plant traits and community-function landscape model for the efficient design of consortia
No full textAbstracts Book, Session 8: Multi-partite interactions, S8-ST01, p. 92.M3
Effects of Spinal Decompression and Segmental Spinal Instrumentation on Lower Limb Functionality in Patients with Spinal Osteoarthritis
No full textSpinal osteoarthritis, a degenerative condition of the spine, significantly impairs quality of life, causing pain, stiffness, and limited mobility. Treatment primarily aims to improve functionality and quality of life. This study investigated the effects of lower back surgery (e.g., spinal decompression with vertebra stabilization) on upper-limb maximum strength, lower limb functionality, and quality of life in osteoarthritis patients. A total of 16 patients (♀ = 10 and ♂ = 6) patients from the orthopedic clinic who were diagnosed with osteoarthritis based on MRI and clinical symptoms underwent the surgery. Their handgrip strength, lower limb functionality (6 min walk test), and quality of life (Flanagan quality of life scale) were assessed before and after the surgery. A repeated measures ANOVA was conducted to assess differences in these metrics pre- and post-surgery across the entire patient cohort, as well as within gender-specific subgroups. A large positive effect was seen in the 6 min walk (p = 0.02, d = -0.83) test but not in the handgrip test or quality of life. However, female patients showed a trend towards better quality of life. The results of this study provide evidence for the effectiveness of surgery in the treatment of spinal osteoarthritis and underscore the need for personalized treatment approaches in the treatment of spinal osteoarthritis.M213.2107214
NONLINEAR IMAGING AND LASER NANO-SURGERY OF FUNGAL CELLS TO ENABLE ELECTROPHYSIOLOGICAL MEASUREMENTS
No full textpp 30-31M3
Metal bioaccumulation and translocation potential of three herbal plant species at mine tailings
No full textPhytoremediation as a technique for cleaning soil contaminated with potentially toxic metals uses plants that can absorb them, and then translocate and accumulate them in above-ground parts. Its effectiveness depends on the selection of adequate plants. Therefore, this study aimed to investigate the potential of three wild herbaceous plant species (Holcus lanatus L., Agrostis alba L., and Eupatorium cannabinum L.) growing on mine tailings for phytoremediation applications. The content of selected metals in soil and plant samples was determined by flame atomic absorption spectrophotometer. The research results indicate that the content of Pb and Cu in the soil of the rhizosphere of the studied species was higher than their remediation values, after the exploitation of polymetallic ore (lead-zinc-copper), which made the tailings an ecological hazard. The species H. lanatus proved to be a good candidate for the phytoaccumulation of Cr, and the species A. alba of Ca, while the species E. cannabinum proved to be phytoaccumulator of all tested metals in the researched mine tailings. Potential for phytoextraction applications were shown by the species H. lanatus for Cd, Cu, Mg and Ni, and A. alba for Cd and Zn.M221.81314052
