Analysis of Pediatric Surgical Disease Spectrum in a Tertiary Hospital.

Objective: To analyze the main disease composition of children hospitalized in pediatric surgery, explore the correlation between disease types and gender, and provide a reference for hospital management and pediatric disease prevention. Methods: Using ICD-10 codes as the classification standard for disease diagnosis, a statistical analysis was conducted on the disease composition of children hospitalized in the Pediatric Surgery Department of the Second Affiliated Hospital of Xi'an Jiaotong University from January 1, 2015, to December 31, 2015, followed by the establishment of a clinical database. A total of 1647 male patients and 817 female patients were enrolled in the study, resulting in a male-to-female ratio of 2:1. The age range of the patients spanned from 0 to 18 years, with a marked imbalance in patient distribution among the various age groups. Statistical analysis was conducted using SPSS version 18.0 software. A chi-square test was performed to analyze the differences in the composition of disease systems and the composition of major diseases in terms of sex and age. Results: Pediatric patients were admitted with complex and diverse diseases in 2015, involving 15 systems of the human body and 400 diseases. Digestive system diseases, tumors, congenital malformations, and genitourinary system diseases were the top four diseases accounting for 83.5% of all pediatric cases. 561 patients were aged 0 years, accounting for 22.3% of all cases, while 1,801 patients fell within the 0-5 years age group, constituting 73.1% of the total. The differences in disease system composition among different sex and age groups of pediatric surgical inpatients were statistically significant (P = .001). There are statistically significant differences in the length of hospital stay and hospitalization costs among pediatric surgical inpatients in different age groups (P = .001). Conclusion: To strengthen the diagnosis and treatment of pediatric surgical diseases, we should strengthen the construction of key departments, optimize the consultation process according to the characteristics of children's disease spectrum, and improve the level of diagnosis and treatment of pediatric surgical diseases.

[Intranasal dosing of nerve growth factor protects brain from poisoning of organophosphorus compounds in rats].

OBJECTIVE: To explore the protective effects of intranasal (IN) dosing of nerve growth factor (NGF) on brain injury induced by organophosphorus compounds (OP) in rats. METHODS: The OP-treated Sprague-Dawley rats received an intraperitoneal injection of atropine sulphate and pralidoxime at 1 min after intoxication. Then NGF or saline was dosed via the olfactory pathway. All rats were sacrificed 24 hours after OP exposure. Damaged nerve cells were estimated on corpus striatum strained with hematoxylin-eosin (H&E) method. And the activity of acetylcholinesterase (AchE) and the concentrations of malondialdehyde (MDA) and reduced glutathione hormone (GSH) in corpus striatum were measured by colorimetric method. RESULTS: As assessed by H&E staining, a large number of degenerated and necrotic nerve cells were observed in corpus striatum in rats from in IN saline group. But in IN NGF group, the number of degenerated neurons was smaller than in IN NS group. Following OP exposure, the activity of AchE decreased in corpus striatum in both IN saline and IN NGF groups (0.46 ± 0.11 vs 0.35 ± 0.09 U/mg prot). No significant differences existed between two groups. But the concentrations of MDA in corpus striatum of IN NGF group rats reduced markedly by 25.14% (4.02 ± 0.85 vs 5.37 ± 1.33 nmol/mg prot) and the level of GSH increased sharply by 15.73% (52.82 ± 2.80 vs 45.64 ± 4.88 mg/g prot) as compared with IN saline group (P < 0.05). CONCLUSION: Intranasal dosing of NGF may improve neuropathology and protect rats against OP-induced oxidative damage in corpus striatum.

Intranasally delivered TGF-beta1 enters brain and regulates gene expressions of its receptors in rats.

This study is aimed to evaluate the brain distribution of transforming growth factor-beta1 (TGF-beta1) following intranasal administration and the subsequent biological effects of TGF-beta1. Adult rats were given recombinant human TGF-beta1 (rhTGF-beta1) or vehicle solution intranasally. TGF-beta1 concentrations were significantly raised in several brain regions and the trigeminal nerve following intranasal delivery. The elevation appeared within 30 min and was sustained for at least 6 h, reaching its greatest level at 60 min. A concentration gradient in the central nervous system (CNS) regions was produced during the first 2 h after intranasal administration, with the OB presenting a significantly higher concentration than any other CNS regions. The nasally administered TGF-beta1 subsequently regulated gene expressions of its two receptors (TGF-beta receptor types I and II) in vivo, but did not affect mRNA level of TGF-beta1 itself. Our results suggest that TGF-beta1 can be transported into the CNS via the olfactory and trigeminal pathways, and may consequently exert its biological effects by regulating gene expressions of its receptors. Intranasal administration of neurotrophic factors may offer a potential strategy for treating some CNS disorders.