Impact of magnetic field on the translocation of iron oxide nanoparticles (Fe3O4) in barley seedlings (Hordeum vulgare L.).

The effect and contribution of an external magnetic field (MF) on the uptake and translocation of nanoparticles (NPs) in plants have been investigated in this study. Barley was treated with iron oxide NPs (Fe3O4, 500 mg/L, 50-100 nm) and grown under various MF strengths (20, 42, 125, and 250 mT). The root-to-shoot translocation of NPs was assessed using a vibrating sample magnetometer (VSM) and inductively coupled plasma optical emission spectrometry (ICP-OES). Additionally, plant phenological parameters, such as germination, protein and chlorophyll content, and photosynthetic and nutritional status, were examined. The results demonstrated that the external MF significantly enhances the uptake of NPs through the roots. The uptake was higher at lower MF strengths (20 and 42 mT) than at higher MF strengths (125 and 250 mT). The root and shoot iron (Fe) contents were approximately 2.5-3-fold higher in the 250 mT application compared to the control. Furthermore, the MF treatments significantly increased micro-elements such as Mn, Zn, Cu, Mo, and B (P < 0.005). This effect could be attributed to the disruption of cell membranes at the root tip cells caused by both the MF and NPs. Moreover, the MF treatments improved germination rates by 28%, total protein content, and photosynthetic parameters. These findings show that magnetic field application helps the effective transport of magnetic NPs, which could be essential for NPs-mediated drug delivery, plant nutrition, and genetic transformation applications. Supplementary Information: The online version contains supplementary material available at 10.1007/s13205-023-03727-4.

Anticancer Activity of Au/CNT Nanocomposite Fabricated by Nanosecond Pulsed Laser Ablation Method on Colon and Cervical Cancer.

Gold nanoparticles (AuNPs) and carbon nanotubes (CNTs) are increasingly being investigated for cancer management due to their physicochemical properties, low toxicity, and biocompatibility. This study used an eco-friendly technique (laser synthesis) to fabricate AuNP and Au/CNT nanocomposites. AuNPs, Au/CNTs, and CNTs were tested as potential cancer nanotherapeutics on colorectal carcinoma cells (HCT-116) and cervical cancer cells (HeLa) using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay. In addition, the non-cancer embryonic kidney cells HEK-293 were taken as a control in the study. The cell viability assay demonstrated a significant reduction in cancer cell population post 48 h treatments of AuNPs, and Au/CNTs. The average cell viabilities of AuNPs, Au/CNTs, and CNTs for HCT-116 cells were 50.62%, 65.88%, 93.55%, and for HeLa cells, the cell viabilities were 50.88%, 66.51%, 91.73%. The cell viabilities for HEK-293 were 50.44%, 65.80%, 93.20%. Both AuNPs and Au/CNTs showed higher cell toxicity and cell death compared with CNT nanomaterials. The treatment of AuNPs and Au/CNTs showed strong inhibitory action on HCT-116 and HeLa cells. However, the treatment of CNTs did not significantly decrease HCT-116 and HeLa cells, and there was only a minor decrease. The treatment of AuNPs, and Au/CNTs, on normal HEK-293 cells also showed a significant decrease in cell viability, but the treatment of CNTs did not produce a significant decrease in the HEK-293 cells. This study shows that a simplified synthesis technique like laser synthesis for the preparation of high-purity nanomaterials has good efficacy for possible future cancer therapy with minimal toxicity.

Traditional and cyberbullying co-occurrence and its relationship to psychiatric symptoms.

BACKGROUND: The effect of cyberbullying accompanied by traditional bullying on mental health has been less studied. In this study, the frequency, co-occurrence, and the relationship to psychiatric symptoms of traditional bullying and cyberbullying among bullies and victims are examined. METHODS: All of the high schools in the province of Mus, Turkey were stratified according to Placement Test for High Schools admission points for 2014-2015. By choosing schools using simple random sampling, 1276 students were reached. Students were given the Brief Symptom Inventory and three separate scale assessments: peer bullying rating, cybervictimization, and cyberbullying scales. RESULTS: High scores in all subscale scores of bullying and victimization were significantly related to higher depression, anxiety, low self-esteem, somatization, and hostility scores. For people who were exposed to cyberbullying in addition to traditional bullying, the severity of the psychiatric symptoms was significantly higher. For all psychiatric symptoms, major predictors were gender, total victimization score, and total cybervictimization score. Moreover, the bullying total score was among the predictors of low self-esteem and hostility. CONCLUSION: Cybervictimization and cyberbullying occur less often than traditional bullying and victimization, but people who were exposed to or performed cyberbullying were also exposed to or performed traditional bullying. The addition of cyberbullying to traditional bullying is associated with more intense psychiatric symptoms.

Dichlorido-1κCl,3κCl-bis-{µ-2,2'-[pro-pane-1,3-diylbis(imino-methyl-ene)]di-phenol-ato}-1:2κO,N,N',O':O,O';2:3κO,O':O,N,N',O'-tricopper(II).

The title linear trinuclear copper(II) complex, [Cu(3)(C(17)H(20)N(2)O(2))(2)Cl(2)], was obtained from N,N'-bis-(2-hydroxy-benz-yl)-1,3-propane-diamine and CuCl(2). The overall charge of the three Cu(2+) ions is balanced by four deprotonated phenol groups and two Cl(-) ligands. The complex is centrosymmetric with the central Cu(2+) occupying a special position (). This Cu(2+) ion is coordinated by the four phenolate O atoms in a square-planar fashion. The second Cu(2+) occupies a general position in a square-pyramidal fashion. Two phenolate O atoms and two amine N form the basal plane, with Cl(-) ligands occupying the fifth coordination site.

Three heterotrinuclear Schiff base complexes of nickel(II) with cobalt(II), copper(II) and manganese(II).

The title compounds, bis(dimethylformamide)-1 kappa O,3 kappa O-bis[mu-2,2'-[2,2'-dimethylpropane-1,3-diylbis(nitrilomethylidyne)]diphenolato]-1 kappa(4)N,N',O,O':2 kappa(2)O,O';2 kappa(2)O,:3 kappa(4)N,N'prime prime or minute,O,O'-di-mu-nitrito-1:2 kappa(2)N:O;2:3 kappa(2)O:N-dinickel(II)cobalt(II), [CoNi(2)(NO(2))(2)(C(19)H(22)N(2)O(2))(2)(C(3)H(7)NO)(2)], (I), -copper(II), [CuNi(2)(NO(2))(2)(C(19)H(22)N(2)O(2))(2)(C(3)H(7)NO)(2)], (II), and -manganese(II), [MnNi(2)(NO(2))(2)(C(19)H(22)N(2)O(2))(2)(C(3)H(7)NO)(2)], (III), consist of centrosymmetric linear heterotrinuclear metal complexes. The three complexes are isostructural. There are three bridges across the Ni-M atom pairs (M is Co(2+), Cu(2+) or Mn(2+)) in each complex, involving two O atoms of a mu-N,N'-bis(salicylidene)-2,2'-1,3-propanediaminate ligand and an N-O moiety of a mu-nitrito group. The coordination sphere around each metal atom, whether Co(2+), Cu(2+), Mn(2+) or Ni(2+), can be described as distorted octahedral. The Ni...M distances are 2.9988 (5) A in (I), 2.9872 (5) A in (II) and 3.0624 (8) A in (III).

Bis[[mu-N,N'-bis(salicylidene)-1,4-butanediamine-N,N',O,O'-copper(II)]-mu-chloro-chloromercury(II)].

A new tetranuclear Cu(II)-Hg(II)-Hg(II)-Cu(II) complex, [Cu(2)Hg(2)Cl(4)(C(18)H(18)N(2)O(2))(2)], has been prepared by means of a copper complex found in the literature. The molecular structure of this complex was determined by X-ray diffraction and the Cu-Hg-Hg-Cu chain was seen to be non-linear. The change in magnetic susceptibility with temperature was recorded for this complex and observed to abide by the Curie-Weiss law. The coordination around the Hg(II) ions is square pyramidal. The Cu...Hg bridging distance is 3.5269(7)A.