Publications by authors named "Rong-Na Ren"

Objective: Bone metabolism can be influenced by a range of factors. We selected children with self-limited epilepsy with centrotemporal spikes (SeLECTS) and lifestyles similar to those of healthy children to control for the confounding factors that may influence bone metabolism. We aimed to identify the specific effects of epilepsy and/or anti-seizure medications (ASMs) on bone metabolism.

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Article Synopsis
  • - Mitochondrial diseases (MDs) are complex disorders caused by issues in both mitochondrial and nuclear DNA, and a study was conducted using dual genomic sequencing to improve diagnosis in pediatric patients.
  • - In a review of 503 pediatric patients, causative genetic variants were found in 177 (35.2%), with a notable fraction (9.1%) having variants directly related to mitochondria.
  • - Dual genomic sequencing proved effective for identifying mitochondrial disorders, but notably, some patients with mitochondrial-related variants were still misclassified as unlikely to have such disorders, highlighting the need for careful evaluation.
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The unc-13 homolog B (UNC13B) gene encodes a presynaptic protein, mammalian uncoordinated 13-2 (Munc13-2), which is highly expressed in the brain-predominantly in the cerebral cortex-and plays an essential role in synaptic vesicle priming and fusion, potentially affecting neuronal excitability. However, the functional significance of the UNC13B mutation in human disease is not known. In this study, we screened for novel genetic variants in a cohort of 446 unrelated cases (families) with partial epilepsy without acquired causes by trio-based whole-exome sequencing.

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Objective: To investigate the characteristics of gene mutations in unexplained infantile epileptic encephalopathy (EE).

Methods: A total of 47 infants with unexplained infantile EE were enrolled, and next-generation sequencing was used to analyze gene mutations in these infants and their parents.

Results: Of all 47 infants, 23 were found to have gene mutations, among whom 13 had de novo mutations and 10 had heterozygous mutations inherited from their father or mother.

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Objective: To investigate pathological changes in the epileptogenic foci of children with intractable epilepsy and their clinical significance.

Methods: Thirty children with intractable epilepsy were included in the study. The epileptogenic foci were surgically resected and pathological changes in the obtained specimens were observed under a light microscope (LM) and a transmission electron microscope (TEM).

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Objective: To explore the association between chorioamnionitis and brain injury in preterm infants.

Methods: A total of 88 preterm infants (28-34 weeks), who were born between June 2008 and June 2011, were divided into a case group (n=41) and a control group (n=47) according to whether or not they had chorioamnionitis. All the infants were examined by brain ultrasonography periodically after birth and underwent brain diffusion weighted imaging (DWI) between 3 and 7 days after birth.

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Objective: Mutations in NPHS2 mapped to 1q25-q31 and encoding podocin, which is exclusively expressed in glomerular podocytes, are responsible for autosomal recessive familial steroid-resistant nephrotic syndrome (SRNS) with minor glomerular abnormalities or focal segmental glomerulosclerosis. Different groups from European and North American countries have screened NPHS2 mutations in familial SRNS with recessive inheritance, documenting a mutation detection rate of 45% - 55% in families. This study aimed to examine mutations in the NPHS2 gene in Southern Chinese Han ethnic group patients with familial SRNS.

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Objective: To study the neuroprotective effects of topiramate (TPM) alone or together with folic acid (FA) on young rats with kindling-induced epilepsy.

Methods: Rat models of epilepsy were prepared by pentylenetetrazol (PTZ)-induced kindling. Seventy-two 3-week-old male Wistar rats were randomly divided into 6 groups: four TPM-treated epilepsy groups (TPM 20, 40 or 80 mg/kg/d and TPM 40 mg/kg/d + FA 5 mg/kg/d), a positive control group (untreated epilepsy group) and a negative control group (normal control group).

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Objective: Topiramate (TPM) has an evident efficacy in the treatment of childhood epilepsy for multiple pharmacologic properties. However it was reported that it may cause adverse effects such as liver failure and hepatitis, which arouses the attention of the medical field. This study aimed to investigate the hepatotoxicity of low-dosage, high-dosage TPM or TPM along with valproate sodium (VPA) in aspects of biochemistry indexes, oxidative stress indexes and liver pathomorphology in young rats.

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Objective: Hemolytic uremic syndrome (HUS) is a common primary disease that can cause acute renal failure in childhood. Renal disease is the most important long-term complication in patients who survived the acute stage of HUS. Use of angiotensin-converting enzyme inhibitors (ACEI) and a restricted protein intake may be beneficial to the patients.

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Objective: To investigate the nutrient effect of glutamine on small intestinal repair in weanling rats after chronic diarrhea.

Methods: Forty 21-day-old wistar rats were randomly divided into five groups (8 in each). Animal model of chronic diarrhea was induced by a lactose enriched diet in the weanling Wistar rat, normal control group was fed with a standard semipurified diet, and after 14 days the rats in both groups were killed to test the establishment of the model.

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