Identification of Neonatal Factors Predicting Pre-Discharge Mortality in Extremely Preterm or Extremely Low Birth Weight Infants: A Historical Cohort Study.

Background/objectives: This study identified early neonatal factors predicting pre-discharge mortality among extremely preterm infants (EPIs) or extremely low birth weight infants (ELBWIs) in China, where data are scarce.

Methods: We conducted a retrospective analysis of 211 (92 deaths) neonates born <28 weeks of gestation or with a birth weight <1000 g, admitted to University Affiliated Hospitals from 2013 to 2024 in Guangzhou, China. Data on 26 neonatal factors before the first 24 h of life and pre-discharge mortality were collected.

Fully automated simultaneous peripheral arteriovenous exchange transfusion not seen to aggravate brain function and the disorder of the internal environment in neonates with severe hyperbilirubinemia.

Background: The acute changes in brain function in newborn infants undergoing ET remain unclear. This study aimed to determine whether fully automated simultaneous peripheral arteriovenous ET would influence the brain function.

Methods: A retrospective analysis was conducted on the clinical data of 39 neonates with hyperbilirubinemia who received ET.

Functional study of a novel c.630delG (p.Y211Tfs*85) mutation in NR5A1 gene in a Chinese boy with 46,XY disorders of sex development.

Purpose: This study aimed to present the clinical features and gene mutation characteristics of a child with 46,XY disorders of sex development (DSD) caused by a novel heterozygous mutation in the NR5A1 gene to determine the potential association between this heterozygous mutation and the pathogenesis of 46,XY DSD.

Methods: We present the case of a Chinese child with ambiguous genitalia at birth but a normal adrenal gland. Targeted next-generation sequencing, comprising 163 candidate genes involved in sexual differentiation and development, was performed, followed by the functional evaluation of the novel NR5A1 mutation.

The protective effects of orexin a against high glucose-induced activation of NLRP3 inflammasome in human vascular endothelial cells.

Vascular disease is one of the most significant threats to the lives of patients suffering from diabetes, and chronic exposure of vascular endothelial cells to high glucose has been shown to significantly contribute to the process of endothelial cell dysfunction, one of the earliest events in diabetes-associated vascular disease. Nucleotide oligomerization domain (NOD)-like receptor pyrin domain-containing 3 (NLRP3) inflammasome plays a key role in initiating the inflammatory process by facilitating the production of interleukin-1β (IL-1β) and IL-18. ASC and caspase 1 are also implicated in NLRP3 inflammasome-mediated chronic inflammation.

Long noncoding RNA SRA1 attenuates hypoxia-induced injury in H9c2 cardiomyocytes through regulating PPARγ/NF-κB signaling pathway.

This study aimed to investigate the effects and mechanisms of long noncoding RNA SRA1 on regulating hypoxia-induced injury in H9c2 cardiomyocytes. The H9c2 cardiomyocytes were cultured under hypoxic (3% O) conditions and whether hypoxia induced injury was assessed by detecting cell viability, apoptosis and autophagy. Then, SRA1 was overexpressed and suppressed in H9c2 cardiomyocytes by transfection with pc-SRA1 and sh-SRA1, and the effects of SRA1 dysregulation on cell viability, apoptosis, and autophagy of H9c2 cardiomyocytes under hypoxia condition were detected.

Recombinant human brain natriuretic peptide regulates PI3K/AKT/mTOR pathway through lncRNA EGOT to attenuate hypoxia-induced injury in H9c2 cardiomyocytes.

This study aimed to investigate whether recombinant human brain natriuretic peptide (rhBNP) regulated hypoxia-induced injury in H9c2 cardiomyocytes through lncRNA EGOT. H9c2 cardiomyocytes were cultured under normoxia and hypoxia (21% and 3% O) conditions, and whether hypoxia induced injury by assessing cell viability, apoptosis and autophagy. H9c2 cells were then treated with different doses of exogenous rhBNP (200, 600 and 900 nmol/L, respectively) and the effects of rhBNP on hypoxia-induced injury in H9c2 cells as well as the expression of EGOT were studied.

Roles of Mitogen-Activating Protein Kinase Kinase Kinase Kinase-3 (MAP4K3) in Preterm Skeletal Muscle Satellite Cell Myogenesis and Mammalian Target of Rapamycin Complex 1 (mTORC1) Activation Regulation.

BACKGROUND Preterm skeletal muscle genesis is a paradigm for myogenesis. The role of mitogen-activating protein kinase kinase kinase kinase-3 (MAP4K3) in preterm skeletal muscle satellite cells myogenesis or its relationship to mammalian target of rapamycin complex 1 (mTORC1) activity have not been previously elaborated. MATERIAL AND METHODS Small interfering RNA (siRNA) interference technology was used to inhibit MAP4K3 expression.

Experience of Octreotide Therapy for Hyperinsulinemic Hypoglycemia in Neonates Born Small for Gestational Age: A Case Series.

Aims: Hyperinsulinemic hypoglycemia (HH) is common in small-for-gestational-age (SGA) neonates. Diazoxide is often used as the first-line medication for HH in SGA neonates. Unfortunately, diazoxide is not authorized in China.

17β-estradiol induces vasorelaxation by stimulating endothelial hydrogen sulfide release.

Estrogen exerts vascular protective effects, but the underlying mechanisms remain to be understood fully. In recent years, hydrogen sulfide (H(2)S) has increasingly been recognized as an important signaling molecule in the cardiovascular system. Vascular H(2)S is produced from L-cysteine, catalyzed by cystathionine γ-lyase (CSE).

Epidermal growth factor receptor signalling mediates growth hormone-induced growth of chondrocytes from sex hormone-inhibited adolescent rats.

1. Growth hormone (GH) has been demonstrated to overcome the inappropriate deceleration of growth rate in children with central precocious puberty treated with gonadotropin-releasing hormone analogue (GnRHa). However, the underlying mechanisms remain largely unclear.

Metformin attenuates ventricular hypertrophy by activating the AMP-activated protein kinase-endothelial nitric oxide synthase pathway in rats.

1. Metformin is an activator of AMP-activated protein kinase (AMPK). Recent studies suggest that pharmacological activation of AMPK inhibits cardiac hypertrophy.

[Stanozolol activates the cross-talk of estrogen receptor alpha-insulin-like growth factor-1 receptor-extracellular-signal regulated kinase 1/2 in the growth plate chondrocytes of estrogen-inhibited adolescent rats in vitro].

Objective: To investigate the effects and the mechanisms of stanozolol (ST) on the proliferation, maturation and differentiation of in vitro cultured growth plate chondrocyte isolated from gonadotropin releasing hormone analogue (GnRHa)-treated adolescent rats, to study if ST mediates the proliferation of chondrocytes via the estrogen receptor alpha (ERalpha), androgen receptor (AR) and/or insulin-like growth factor-1 receptor (IGF-1R) and interactions of the two receptor and IGF-1R receptor signaling pathway, to investigate the mechanism of the biological effects in ST promoting bone growth/maturity at molecular level.

Method: The rats were weaned at the end of 3 weeks and intramuscular injection of triptorelin of GnRHa preparations, qow x 2 was started. The rats were sacrificed at the end of 7 weeks, and then the tibiae growth plates were taken out with sterile procedure.

[Clinical investigation on the treatment of HCMV hepatitis in children].

Objective: To investigate the effective therapeutic method of human cytomegalovirus (HCMV) hepatitis in children.

Methods: Twenty-five children with HCMV hepatitis were randomly assigned to a treated group (n=13) or a control group (n=12). Both groups were treated with prednisone, glucurone, luminal and Xiaoyanlidanpian.

[Effect of human cytomegalovirus on hematopoietic system].

Objective: To investigate the mechanism and the suppression effect of human cytomegalovirus (HCMV) on hematopoietic system.

Methods: Semi-solid culture system was used to observe the effect of HCMV AD169 strain on colony forming unit granulocyte/macrophage (CFU-GM), CFU-erythroid (CFU-E), CFU-multipotent (CFU-Mix) and CFU-megakaryocyte (CFU-MK) growth. The techniques of in situ polymerase chain reaction (IS-PCR) and polymerase chain reaction (PCR) were used to demonstrate the existence of HCMV DNA in the colony cells of cultured CFU-GM, CFU-Mix, CFU-MK and CFU-E, respectively.

[Validation study on the criteria for clinical classification of small for gestational age infants].

Objective: To study the validity of criteria currently used in China for the classification of symmetric small for gestational age infants (SGA) as compared with its definition.

Methods: This study included 417 inpatients diagnosed as SGA in authors' hospital from January 1998 to June 2002. Symmetric SGA was diagnosed by the following three criteria: (1) the Ponderal Index (PI), (2) the crown-heel length-to-head circumference ratio (BL/HC) issued in Chin J Pediatr (1988;26:164 - 165), as well as (3) the SGA definition.

[Detection of human cytomegalovirus infection by FQ-PCR technique and its application in the diagnosis and treatment of HCMV infected children].

Background: To detect quantitatively HCMV DNA in peripheral blood leukocytes to monitor the status of HCMV infection, evaluate the effectiveness of antiviral treatment with ganciclovir (GCV) combined with intravenous immunoglobulin (IVIG) and find out the relationship among the HCMV DNA levels, the state of infection and the clinical outcome.The long-term goal of the study was to establish a molecular diagnostic standard for HCMV infection in children.

Methods: 45 cases of suspected HCMV-infected children were examined by PCR, ELISA and fluorescent quantitative (FQ)-PCR, respectively.