The mammalian target of rapamycin (mTOR) signaling pathway is a powerful regulator of cell proliferation, growth, synapse maintenance and cell fate. While intensely studied for its role in cancer, the role of mTOR signaling is just beginning to be uncovered in specific cell types that are implicated in neurodevelopmental disorders. Previously, loss of the gene, which results in hyperactive mTOR, was shown to affect the function and molecular properties of GABAergic cortical interneurons (CINs) derived from the medial ganglionic eminence.
View Article and Find Full Text PDFBackground: Empty sella is an anatomical and radiological finding of the herniation of the subarachnoid space into the pituitary fossa leading to a flattened pituitary gland. Patients with empty sella may present with various symptoms, including headache due to intracranial hypertension and endocrine symptoms related to the specific pituitary hormones affected. Here, we report a female patient who developed persistent postoperative hypotension caused by subclinical empty sella syndrome after a simple surgery.
View Article and Find Full Text PDFObjective: This study aimed to investigate the role of computed tomography angiography (CTA) and three-dimensional (3D) reconstruction of renal arteries in the evaluation of bleeding after mini- percutaneous nephrolithotomy (PCNL).
Methods: Thirty-one consecutive patients with continuous renal hemorrhage after mini-PCNL were enrolled from January 2015 to January 2022. Demographic and clinical data were retrospectively recorded and analyzed.
To assess the safety and effectiveness of oral methylprednisolone (oMP) in comparison with intramuscular adrenocorticotropic hormone (imACTH) and oral prednisolone (oP) therapies in children with infantile spasms (IS). In this prospective, open-label, non-blinded, uncontrolled observational study, children (aged 2-24 months) with newly diagnosed IS presenting with hypsarrhythmia or its variants on electroencephalogram (EEG) were included. It was followed by imACTH, oP, or oMP (32-48 mg/day for 2 weeks followed by tapering) treatments.
View Article and Find Full Text PDFThe present study investigated the use of retrograde flexible ureteroscopy (RFU) in the discrimination of the etiology of hematuria that originates from the upper urinary tract (UUT). The present study collected retrospective data for patients who presented with hematuria and cystoscopy-detected bleeding from the UUT between June 2006 and August 2018 in Ningbo First Hospital. All patients accepted RFU to determine the etiology of hematuria.
View Article and Find Full Text PDFMafb and c-Maf transcription factor (TF) expression is enriched in medial ganglionic eminence (MGE) lineages, beginning in late-secondary progenitors and continuing into mature parvalbumin (PV) and somatostatin (SST) interneurons. However, the functions of Maf TFs in MGE development remain to be elucidated. Herein, Mafb and c-Maf were conditionally deleted, alone and together, in the MGE and its lineages.
View Article and Find Full Text PDFThe present study assessed the clinical efficacy of guide sheath-assisted ureteroscope lithotripsy in the treatment of upper ureteral calculi. A total of 81 patients with upper ureteral calculi underwent ureteroscope lithotripsy assisted by a guide sheath between January 2012 and June 2014; of these, 63 patients were successfully treated with simple rigid ureteroscope lithotripsy assisted by a ureteral access sheath, and 18 patients were successfully treated with rigid and flexible ureteroscope lithotripsy assisted by a guide sheath. At 1 day after the surgery, ultrasound examination of kidneys, ureters and bladder, and urinary system computed tomography were used to re-check for residual stones, and 69 patients had stones with a diameter of <2 mm in the renal pelvis, while 12 had stones of 2-4 mm in diameter.
View Article and Find Full Text PDFCortical interneurons are a diverse group of neurons that project locally and are crucial for regulating information processing and flow throughout the cortex. Recent studies in mice have advanced our understanding of how these neurons are specified, migrate and mature. Here, we evaluate new findings that provide insights into the development of cortical interneurons and that shed light on when their fate is determined, on the influence that regional domains have on their development, and on the role that key transcription factors and other crucial regulatory genes play in these events.
View Article and Find Full Text PDFDistinct cortical interneuron (CIN) subtypes have unique circuit functions; dysfunction in specific subtypes is implicated in neuropsychiatric disorders. Somatostatin- and parvalbumin-expressing (SST and PV) interneurons are the two major subtypes generated by medial ganglionic eminence (MGE) progenitors. Spatial and temporal mechanisms governing their cell-fate specification and differential integration into cortical layers are largely unknown.
View Article and Find Full Text PDFZhongguo Shi Yan Xue Ye Xue Za Zhi
April 2017
Objective: To study the correlation between the excessive activation of Hedgehog signal and the drug resistance of multiple myeloma.
Methods: The resistant cell line RPMI 8226/R of multiple myeloma was established by an ascending concentration gradient method. The experiment consisted of 4 groups: RPMI8226/R, RPMI8226/S, GANT61+RPMI8226/R and GANT61+RPMI8226/S.
The embryonic basal ganglia generates multiple projection neurons and interneuron subtypes from distinct progenitor domains. Combinatorial interactions of transcription factors and chromatin are thought to regulate gene expression. In the medial ganglionic eminence, the NKX2-1 transcription factor controls regional identity and, with LHX6, is necessary to specify pallidal projection neurons and forebrain interneurons.
View Article and Find Full Text PDFBackground: Na + /Ca 2+ exchanger (NCX) plays a crucial role in pentylenetetrazol-induced convulsion. However, it is unclear whether NCX is critically involved in hyperthermia-induced convulsion. In this study, we examined the potential changes in NCX3 in the hippocampus and cerebrocortex of rats with hyperthermia-induced convulsion.
View Article and Find Full Text PDFScientificWorldJournal
January 2016
The range-extended electric vehicle is proposed to improve the range anxiety drivers have of electric vehicles. Conventionally, a gasoline/diesel generator increases the range of an electric vehicle. Due to the zero-CO2 emission stipulations, utilizing fuel cells as generators raises concerns in society.
View Article and Find Full Text PDFZhongguo Dang Dai Er Ke Za Zhi
June 2015
Objective: To study the association between two single nucleotide polymorphisms (SNP), rs2295080 and rs2536, in mammalian target of rapamycin (mTOR) gene and the susceptibility to pediatric epilepsy.
Methods: A case- control study was performed on 480 children with epilepsy (116 cases of refractory epilepsy) and 503 healthy children. SNP rs2295080 and rs2536 in the mTOR gene were detected by polymerase chain reaction restriction and fragment length polymorphisms (PCR-RFLP).
Zhongguo Shi Yan Xue Ye Xue Za Zhi
October 2014
This study was aimed to investigate the molecular mechanism of doxorubicin resistance in multiple myeloma cell line and certify the effect of Notch signal over-expression on drug resistance of myeloma cells. The doxorubicin RPMI 8226 cell line (RPMI8226/DOX) was established by culturing 8226 cells with continuous low concentration and intermittent gradually-increasing-concentration of doxorubicin in vitro, the mRNA expression of Notch2,Jagged1, Jagged2, HES1 were measured by RT-PCR and the P-170 protein expression was detected by Western blot in RPMI 8226 cell line; the changes of IL-6 and VEGF were tested by ELISA. The results showed that the Notch mRNA expression (Notch2, Jagged1, Jagged2 increased gradually along with the increase of chemotherapeutic drug resistance, but the expression of HESI mRNA gradually decreased along with the increase of drug resistance.
View Article and Find Full Text PDFZhongguo Dang Dai Er Ke Za Zhi
April 2014
Zhongguo Dang Dai Er Ke Za Zhi
April 2014
Objective: To study the clinical features and mutations in methyl-CpG-binding protein 2 (MECP2) gene among children with classical Rett syndrome in China.
Methods: PCR and direct sequencing were employed to analyze the three exons of MECP2 gene in 9 children recently diagnosed with Rett syndrome and their parents.
Results: Heterozygous mutations were identified in 5 out of 9 patients, with a mutation rate of over 50%; there was one case of insert mutation (c.
Borders are important as they demarcate developing tissue into distinct functional units. A key challenge is the discovery of mechanisms that can convert morphogen gradients into tissue borders. While mechanisms that produce ultrasensitive cellular responses provide a solution, how extracellular morphogens drive such mechanisms remains poorly understood.
View Article and Find Full Text PDFJ Huazhong Univ Sci Technolog Med Sci
February 2014
Previous studies have demonstrated a strong association between carbamazepine (CBZ)-induced Stevens-Johnson syndrome (SJS) and HLA-B*1502 in Han Chinese. Here, we extended the study of HLA-B*1502 susceptibility to two different antiepileptic drugs, oxcarbazepine (OXC) and phenobarbital (PB). In addition, we genotyped HLA-B*1511 in a case of CBZ-induced SJS with genotype negative for HLA-B*1502.
View Article and Find Full Text PDFBackground: Stroke occurs upon obstruction of cerebral blood circulation and is clinically characterized by sudden onset symptoms. Advanced age is the main risk factor of stroke, but cases of pediatric stroke have been rarely reported. This study aimed to determine the etiology, clinical presentation, and radiologic features of neurological deficit for pediatric arterial ischemic stroke (PAIS).
View Article and Find Full Text PDFObjective: To investigate the treatment efficiency and mechanism of recombinant adenoviral vector carrying LRIG1 gene driven by Survivin promoter for bladder cancer.
Methods: Human bladder cancer cell line BIU87 and immortalized human bladder epithelial cells SV-HUC-1 were infected with Ad-Surp-LRIG1 and Ad-LRIG, respectively. The selective infection efficiency of Ad-Surp-LRIG1 and Ad-LRIG were evaluated by checking the expression of epidermal growth factor receptor (EGFR).
Purpose: We investigated the safety and efficacy of Shang Ring™ male circumcision and conventional sleeve resection circumcision in a randomized study.
Materials And Methods: During the same period, 479 cases of Shang Ring circumcision and 354 of sleeve resection circumcision were performed. Complete followup data were evaluated on the 2 groups.