Mutation of the SUMOylation site of Aurora-B disrupts spindle formation and chromosome alignment in oocytes.

Aurora-B is a kinase that regulates spindle assembly and kinetochore-microtubule (KT-MT) attachment during mitosis and meiosis. SUMOylation is involved in the oocyte meiosis regulation through promoting spindle assembly and chromosome segregation, but its substrates to support this function is still unknown. It is reported that Aurora-B is SUMOylated in somatic cells, and SUMOylated Aurora-B contributes the process of mitosis.

Causal relationship between OHSS and immune cells: A Mendelian randomization study.

Objective: To confirm the causal relationship between immune cells and Ovarian Hyperstimulation Syndrome.

Design: Obtaining data, collecting single nucleotide polymorphisms, detecting instrumental variables heterogeneity, assessing causality, and assessing bidirectional causality.

Subjects: A two sample Mendelian study to confirm the causal relationship between immune cells and Ovarian Hyperstimulation Syndrome.

Subregional thalamic functional connectivity abnormalities and cognitive impairments in first-episode schizophrenia.

Background: Previous studies have documented thalamic functional connectivity (FC) abnormalities in schizophrenia, typically examining the thalamus as a whole. The specific link between subregional thalamic FC and cognitive deficits in first-episode schizophrenia (FES) remains unexplored.

Methods: Using data from resting-state functional magnetic resonance imaging, we compared whole-brain FC with thalamic subregions between patients and HCs, and analyzed FC changes in drug-naïve patients separately.

Cognitive control impairment in ax-continuous performance test in patients with schizophrenia: A pilot EEG study.

Objectives: This study aimed to investigate the mechanism of cognitive control impairment in patients with schizophrenia (SPs) using electroencephalogram (EEG).

Methods: A total of 17 SPs and 17 healthy controls (HCs) were included in this study. We measured the EEG activity, whereas they performed the AX-continuous performance test which consisted of the preparatory phase and the response phase.

The cognitive effects of adjunctive repetitive transcranial magnetic stimulation for late-onset depression: a randomized controlled trial with 4 week follow-up.

Objectives: Cognitive impairment is common and linked to poor outcomes in patients with late-onset depression (LOD). The cognitive effects of repetitive transcranial magnetic stimulation (rTMS) for LOD are not well understood. This study aimed to investigate the effects of rTMS on cognitive function in elderly patients with LOD.

Age-related SUMOylation of PLK1 is essential to meiosis progression in mouse oocytes.

Polo like kinase 1 (PLK1) is a protein kinase involved in regulating the spindle assembly and cell cycle control in mammalian oocytes. SUMOylation, one way of post-translational modification, regulates oocyte meiosis by controlling several substrates. However, the relation between PLK1 and SUMOylation in oocytes is still unknown.

[Molecular Mechanism of Aurora Kinase A Regulating the Meiosis of Oocyte].

Aurora kinase A (AURKA),a family member of aurora kinases,is involved in mitotic entry,maturation and separation of centrosome,assembly and stabilization of bipolar spindle,and condensation and separation of chromosome.Studies have demonstrated that AURKA plays a similar role in meiosis,while the specific mechanism and the similarities and differences in its role between meiosis and mitosis remain unclear.Therefore,we reviewed the studies about the localization and activation of AURKA in oocyte meiosis,and compared the role of AURKA in regulating spindle formation,activating spindle assembly checkpoint,and correcting the kinetochore-microtubule attachment between the meiosis of oocytes and the mitosis of somatic cells.

Acrylamide Exposure Destroys the Distribution and Functions of Organelles in Mouse Oocytes.

Acrylamide (ACR) is a common industrial ingredient which is also found in foods that are cooked at high temperatures. ACR has been shown to have multiple toxicities including reproductive toxicity. Previous studies reported that ACR caused oocyte maturation defects through the induction of apoptosis and oxidative stress.

Ral GTPase is essential for actin dynamics and Golgi apparatus distribution in mouse oocyte maturation.

Background: Ral family is a member of Ras-like GTPase superfamily, which includes RalA and RalB. RalA/B play important roles in many cell biological functions, including cytoskeleton dynamics, cell division, membrane transport, gene expression and signal transduction. However, whether RalA/B involve into the mammalian oocyte meiosis is still unclear.

Electroconvulsive therapy is associated with lower readmission rates in patients with schizophrenia.

Background: Electroconvulsive therapy is an important somatic treatment for severe mental disorders with established efficacy and safety. However, data on the relationship between ECT and the readmission rate of patients with schizophrenia are scarce. This study will explore the association between the administration of ECT and readmission rates using a machine learning method.

FASCIN regulates actin assembly for spindle movement and polar body extrusion in mouse oocyte meiosis.

During mouse oocyte meiotic maturation, actin filaments play multiple roles in meiosis such as spindle migration and cytokinesis. FASCIN is shown to be an actin-binding and bundling protein, making actin filaments tightly packed and parallel-aligned, and FASCIN is involved in several cellular processes like adhesion and migration. FASCIN is also a potential prognostic biomarker and therapeutic target for the treatment of metastatic disease.

Magnetodielectric Response in a Layered Mixed-Valence Ferrimagnetic Molecular Compound.

The magnetodielectric effect is closely related to multiferroic or magnetoelectric coupling; thus, it can be used to predict magnetoelectric coupling, especially in compounds with special magnetic properties. The magnetodielectric response can often be used to predict many interesting and meaningful physical coupling mechanisms. Therefore, fabricating magnetodielectric materials is an effective step toward the development of magnetoelectric materials.

Inhibition of survivin induces spindle disorganization, chromosome misalignment, and DNA damage during mouse embryo development.

The early embryonic development is important for the subsequent embryo implantation, and any defects in this process can lead to embryonic aneuploidy, which causes miscarriage and birth defects. Survivin is the member of inhibitor of apoptosis protein (IAP) family, and it is also an essential subunit of chromosomal passenger complex (CPC), which regulates both apoptosis and cell cycle control in many models. However, the roles of survivin in mouse early embryos remain unclear.

The Mechanism of the Magnetodielectric Response in a Molecule-Based Trinuclear Iron Cluster Material.

Magnetodielectric response mechanisms are critical for the rational design and synthesis of molecule-based magnetodielectric materials. Herein, the magnetodielectric response was investigated in the molecule-based material [Fe O(CH COO) (py) ](py) (1). Its magnetodielectric coefficient (MD) is -2.

Polar Molecule-Based Material with Optic-Electric Switching Constructed by Polar Anions.

Polar crystal structures have attracted more and more attention, due to their unique characteristics, such as ferroelectricity, piezoelectricity, and nonlinear optical property, etc. However, the construction of polar materials is always accidental, and finding an effective synthesis strategy to construct polar materials remains a challenge. Herein, inorganic-organic hybrid compounds of [CHN][FeCl] () ([CHN] = quinuclidinium cation) and [CHN][GeCl] () were prepared, respectively, to verify the beneficial effect of polar anions on the construction of polar crystals.

Podophyllotoxin affects porcine oocyte maturation by inducing oxidative stress-mediated early apoptosis.

Podophyllotoxin (PPT) is a lignan extracted from podophyllum genera and it shows potent antitumor activity since it could effectively inhibit the assembly of microtubule in tumor cells. However, the effects of podophyllotoxin exposure on porcine oocyte quality is still unclear. In present study we tried to examine whether podophyllotoxin exposure was toxic to porcine oocyte maturation.

[Effect of SUMO Modification on the Chromosomal Aneuploidy in Oocytes].

The chromosomal aneuploidy in oocytes is one of main causes of abortion and neonatal birth defects.It is mainly due to the premature separation of sister chromatid caused by the loss of Cohesin protein complex and the non-disjunction sister chromatids caused by abnormal microtubule dynamics aneuploidy.As a pathway of protein post-translational modification,SUMO modification(or SUMOylation)involves many physiological regulation processes including cell proliferation,differentiation,apoptosis,and cycle regulation.

Anion-Dependent Assembly of Heterometallic 3d-4f Clusters Based on a Lacunary Polyoxometalate.

A series of heterometallic 3d-4f clusters, formulated as Na[Ln(HO)Ni(HO)(SbO)(SbWO)(NiWO)(WO)(CHCOO)]·(HO) [abbreviated as LnNi, where Ln = La (1), Pr (2), and Nd (3)], KNa[Ln(HO)Ni(HO)(SbWO)(WO)(CO)]·(HO) [abbreviated as LnNi, where Ln = La (4), Pr (5), and Nd (6)], and KNa[LnNi(μ-OH)(SbWO)(PWO)(CHCOO)]·(HO) [abbreviated as LnNi, where Ln = Dy (7) and Er (8)], were obtained through the reaction of the lacunary {SbWO} precursor with Ln(NO)·6HO and NiCl·6HO in a NaAc/HAc buffer in the presence of different anions. Single-crystal X-ray structure analysis revealed that compounds 1-3 possessed tetrameric architectures featuring three Keggin-type {SbWO} and one Anderson-type {NiWO} building blocks encapsulating one {SbO} cluster, three WO units, three Ln metal ions, and two Ni metal ions. Compounds 4-6 displayed cyclic trimeric aggregates of three {SbWO} units enveloping one CO-templated trinuclear [Ln(CO)] and one WO-templated [Ni(WO)] unit.

Three Giant Lanthanide Clusters Ln (Ln = Gd, Tb, and Eu) Featuring A Double-Cage Structure.

Three homometallic high-nuclearity clusters, formulated as [(CO)@Ln(LH)(CHCOO)(CO)(μ-OH)(μ-HO)(HO)]·(ClO)·(HO) (abbreviated as Ln, Ln = Gd (1); Tb (2); Eu (3), LH = 1,2,3-cyclohexanetriol) and featuring a double cage-like structure, were obtained through the reaction of 1,2,3-cyclohexanetriol, acetate ligand, and Ln(ClO). The largest odd-numbered lanthanide cluster Gd exhibits an entropy change (-ΔS) of 38.7 J kg K.