Incidence of extrauterine growth retardation and its risk factors in very preterm infants during hospitalization: a multicenter prospective study. / ä½é™¢æžæ—©äº§å„¿å®«å¤–ç”Ÿé•¿è¿Ÿç¼“åŠç›¸å ³å› ç´ çš„å¤šä¸­å¿ƒå‰çž»æ€§ç ”ç©¶.

OBJECTIVES: To investigate the incidence of extrauterine growth retardation (EUGR) and its risk factors in very preterm infants (VPIs) during hospitalization in China. METHODS: A prospective multicenter study was performed on the medical data of 2 514 VPIs who were hospitalized in the department of neonatology in 28 hospitals from 7 areas of China between September 2019 and December 2020. According to the presence or absence of EUGR based on the evaluation of body weight at the corrected gestational age of 36 weeks or at discharge, the VPIs were classified to two groups: EUGR group (n=1 189) and non-EUGR (n=1 325). The clinical features were compared between the two groups, and the incidence of EUGR and risk factors for EUGR were examined. RESULTS: The incidence of EUGR was 47.30% (1 189/2 514) evaluated by weight. The multivariate logistic regression analysis showed that higher weight growth velocity after regaining birth weight and higher cumulative calorie intake during the first week of hospitalization were protective factors against EUGR (P<0.05), while small-for-gestational-age birth, prolonged time to the initiation of total enteral feeding, prolonged cumulative fasting time, lower breast milk intake before starting human milk fortifiers, prolonged time to the initiation of full fortified feeding, and moderate-to-severe bronchopulmonary dysplasia were risk factors for EUGR (P<0.05). CONCLUSIONS: It is crucial to reduce the incidence of EUGR by achieving total enteral feeding as early as possible, strengthening breastfeeding, increasing calorie intake in the first week after birth, improving the velocity of weight gain, and preventing moderate-severe bronchopulmonary dysplasia in VPIs.

[Selection of enteral nutrition regimens for children with abdominal Henoch-Schönlein purpura].

OBJECTIVE: To explore the reasonable and effective enteral nutrition regimen for children with abdominal Henoch-Schönlein purpura (HSP). METHODS: A retrospective analysis was performed on the medical data of children with abdominal HSP who were hospitalized from August 2013 to August 2018. According to the starting time of enteral nutrition after abdominal pain relief, the children were divided into three groups: < 24 hours (n=68), 24-48 hours (n=64), and 48-72 hours (n=60). According to the type of enteral nutrition, they were divided into another three groups:amino acid-based formula (n=53), extensively hydrolyzed lactoprotein formula (n=67), and normal diet (n=72). The recurrence rate of clinical symptoms and degree of satisfaction among family members were compared between groups. Based on the retrospective analysis, 166 children with abdominal HSP were enrolled in a prospective study. They were given extensively hydrolyzed lactoprotein formula after abdominal pain relief. According to the feeding time after abdominal pain relief, they were divided into three groups: < 24 hours (n=52), 24-48 hours (n=59), and 48-72 hours (n=55). The three groups were compared in terms of the recurrence rates of abdominal pain, rash, and hematochezia, the rate of use of parenteral nutrition and intravenous steroids, and the incidence rate of weight loss at discharge. RESULTS: The retrospective analysis showed that the children who were given extensively hydrolyzed lactoprotein formula for enteral nutrition at 24-48 hours after abdominal pain relief had a lower recurrence rate of clinical symptoms and the highest degree of satisfaction among their family members (P < 0.0167). The prospective study showed that the children who were given extensively hydrolyzed lactoprotein formula for enteral nutrition at 24-48 hours after abdominal pain relief had lower recurrence rates of rash and abdominal pain, a lower rate of use of parenteral nutrition, and a lower incidence rate of weight loss at discharge (P < 0.05). CONCLUSIONS: It is reasonable and effective to start the feeding with extensively hydrolyzed lactoprotein formula at 24-48 hours after abdominal pain relief in children with abdominal HSP.

[Clinical effect of alanyl-glutamine-enriched nutritional support in the treatment of children with abdominal Henoch-Schönlein purpura].

OBJECTIVE: To study the clinical effect of alanyl-glutamine-enriched nutritional support in the treatment of children with abdominal Henoch-Schönlein purpura. METHODS: Children with abdominal Henoch-Schönlein purpura who needed nutritional support were enrolled and stratified according to age, sex and the severity of disease, and were randomly divided into a control group (n=118) and an enriched nutritional support group (n=107). The control group was given nutritional support without using alanyl-glutamine, while the enriched nutritional support group was given alanyl-glutamine-enriched nutritional support. Intravenous steroids were used according to the severity of disease in both groups. Other therapies were the same in the two groups. The two groups were compared in terms of the length of hospital stay, the rate and duration of use of intravenous steroids, the recurrence rate of symptoms during hospitalization, the rate of total parenteral nutrition (TPN), the rate of weight loss and the rate of fasting for more than 5 days. All patients were followed up for 3 months after discharge to monitor the recurrence of symptoms. RESULTS: There were no significant differences in the length of hospital stay, the rate of TPN and the rate of fasting for more than 5 days between the two groups (P>0.05). Compared with the enriched nutritional support group, the control group showed significant increases in the rate and duration of use of intravenous steroids, the recurrence rate of symptoms and the rate of weight loss (P<0.05). After the 3-month follow-up, all the children resumed normal diet, and the recurrence rate of digestive symptoms was less than 20% in each group. Abdominal pain was the most common symptom (83.33%, 30/36), followed by vomiting and abdominal distention. No digestive hemorrhage was observed. All the symptoms were relieved after symptomatic treatment. No significant difference was found between the two groups in the recurrence rate of digestive symptoms (P=0.693). CONCLUSIONS: Alanyl-glutamine-enriched nutritional support in the treatment of children with abdominal Henoch-Schönlein purpura can reduce the use of intravenous steroids and weight loss, but without impact on the length of hospital stay and post-discharge recurrence.

[Epidemiological and clinical features of calicivirus-associated diarrhea in hospitalized children in Chengdu, China from 2012 to 2014].

OBJECTIVE: To investigate the epidemiological and clinical features of calicivirus-associated diarrhea in hospitalized children in Chengdu, China in recent years. METHODS: The clinical data of 267 children with calicivirus-associated diarrhea aged <5 years who were hospitalized in Chengdu Women and Children's Central Hospital (the only sentinel hospital for sample collection of pediatric viral diarrhea in Chengdu, Sichuan) between January 2012 and December 2014 were retrospectively studied. RESULTS: Among the 267 children, 200 (74.9%) were aged less than 1 year. The infection rate of calicivirus was 28.4%, 21.6%, and 27.1% in 2012, 2013, and 2014, respectively. Calicivirus was prevalent in summer and autumn (August to October). The detection rate of Norovirus II was 85.8% (229/267), and 244 children (91.4%) experienced an acute clinical course. Watery stool was the most common change in stool properties (82.0%, 219 children), and some specimens showed mucus and/or blood. Most children had moderate to severe fever. One hundred and thirty-eight children (53.9%) experienced a reduced serum prealbumin level. One hundred and fifty-nine children (59.6%) experienced flora imbalance. CONCLUSIONS: Calicivirus has become one of the major pathogens for diarrhea in children aged <5 years in Chengdu, with Norovirus II as the dominant strain. Calicivirus is prevalent in summer and autumn. Infants aged <1 year are the main population affected by calicivirus-associated diarrhea, with watery stool as the most common manifestation.

Gastrointestinal symptoms as the first sign of chronic granulomatous disease in a neonate: A case report.

BACKGROUND: Chronic granulomatous disease (CGD) characterized by recurrent and severe bacterial and fungal infections is most common in childhood. CASE SUMMARY: We reported a 24-d-old male infant who developed gastrointestinal symptoms as the first sign of CGD. CONCLUSION: Gastrointestinal symptoms representing the first sign of CGD are very rare, and prompt diagnosis and treatment with broad-spectrum antibiotics were of crucial importance.

From SARS to COVID-19: What we have learned about children infected with COVID-19.

INTRODUCTION: Coronaviruses, both SARS-CoV and SARS-CoV-2, first appeared in China. They have certain biological, epidemiological and pathological similarities. To date, research has shown that their genes exhibit 79% of identical sequences and the receptor-binding domain structure is also very similar. There has been extensive research performed on SARS; however, the understanding of the pathophysiological impact of coronavirus disease 2019 (COVID-19) is still limited. METHODS: This review drew upon the lessons learnt from SARS, in terms of epidemiology, clinical characteristics and pathogenesis, to further understand the features of COVID-19. RESULTS: By comparing these two diseases, it found that COVID-19 has quicker and wider transmission, obvious family agglomeration, and higher morbidity and mortality. Newborns, asymptomatic children and normal chest imaging cases emerged in COVID-19 literature. Children starting with gastrointestinal symptoms may progress to severe conditions and newborns whose mothers are infected with COVID-19 could have severe complications. The laboratory test data showed that the percentage of neutrophils and the level of LDH is higher, and the number of CD4+ and CD8+T-cells is decreased in children's COVID-19 cases. CONCLUSION: Based on these early observations, as pediatricians, this review put forward some thoughts on children's COVID-19 and gave some recommendations to contain the disease.

Complement regulatory protein CD59 involves c-SRC related tyrosine phosphorylation of the creatine transporter in skeletal muscle during sepsis.

BACKGROUND: Myocellular creatine (Cr) uptake is predominantly governed by the creatine transporter (CreaT) and plays a pivotal role in skeletal muscle energy metabolism. The CreaT belongs to a neurotransmitter transporter family that is functionally regulated by protein tyrosine kinase induced tyrosine phosphorylation. Recently, complement regulatory protein CD59 has been found not only to protect host tissue from C5b-9 complex attack that occurs in sepsis but also to initiate the activation of Src family kinase and tyrosine phosphorylation of its downstream proteins. The purpose of this study was to determine the association between myocellular free Cr, c-Src related tyrosine phosphorylation of the CreaT, and CD59 during sepsis. METHODS: Male Sprague-Dawley rats (250 to 300 g) were randomized to undergo cecal ligation and puncture (CLP) or sham operation. Fast-twitch gastrocnemius muscles were harvested 24 hours after operation. Myocellular free Cr levels were measured by high-performance liquid chromatography. Combination of protein immunoprecipitation with Western blotting was used to assess tyrosine phosphorylation status of the CreaT and the association between CD59, c-Src, and CreaT. RESULTS: Myocellular free Cr levels were 70% greater after CLP. Tyrosine phosphorylation of the CreaT was significantly increased after CLP as compared to sham operation. Tyrosine phosphorylated c-Src (Tyr-416) in the CreaT-c-Src immune complex was 24% higher after CLP. Sepsis also increased protein expression of tyrosine phosphorylated c-Src (Tyr-416) or CreaT in the CD59-c-Src or CD59-CreaT complex by 20% or 30%, respectively. CONCLUSIONS: During sepsis, an increase in myocellular free Cr levels is associated with enhanced tyrosine phosphorylation of the CreaT, which is likely induced by active c-Src. CD59 is physically associated with both c-Src and CreaT, which suggests that CD59 may participate in the regulation of myocellular Cr metabolism via the CreaT during sepsis.

[Molecular epidemiology of viral diarrhea in Chengdu infants and young children].

OBJECTIVE: To investigated the molecular epidemiologic features of viral diarrhea in Chengdu infants and young children, and to establish baseline patterns of etiology, provides the scientific basis for the vaccine development and the epidemic situation control. METHODS: From March, 2006 to December, 2008, a total of 376 infants and young children from Chengdu area hospitalized for diarrhea in Chengdu Children's Hospital were enrolled in this study. The stool specimen collected from each patient was tested for rotavirus (RV), Calicivirus (CV), astrovirus (AstV) and adenovirus (Adv) by using enzyme linked immunosorbent assay (ELISA) and reverse transcription-polymerase chain reaction (RT-PCR) examination. RESULTS: Among those 376 cases,there were 142 cases (37.76%) of RV infections,which scattered predominantly in October to December. Among 234 cases RV negativity,there were 29 cases HuCV infections (15.85%), 5 cases AstV infections (1.64%), and 8 cases Adv infections (2.04%). CONCLUSION: RV appeared to be the main etiological agent of viral diarrhea in Chengdu infants and young children,the predominant serotype of RV were G3, P[8] and P[4],HuCV might be the important etiological agent besides RV.

Cr supplementation decreases tyrosine phosphorylation of the CreaT in skeletal muscle during sepsis.

Myocellular creatine (Cr) uptake is predominantly governed by a sodium-dependent Cr transporter (CreaT) and plays a pivotal role in skeletal muscle energy metabolism. The CreaT belongs to a neurotransmitter transporter family that can be functionally regulated by protein tyrosine kinase-induced tyrosine phosphorylation. The association between myocellular Cr and c-Src-related tyrosine phosphorylation of the CreaT and the influence of oral Cr supplementation on this association were investigated during sepsis. Animals were randomized to receive standard rat chow or standard rat chow with oral Cr supplementation for 4 days followed by cecal ligation and puncture (CLP) or sham operation. Fast-twitch gastrocnemius muscles were harvested 24 h after operation. Myocellular free Cr levels were 70% higher after CLP. Western blotting of the immunoprecipitated CreaT with an anti-phosphotyrosine or anti-phospho-c-Src (Y-416) antibody revealed that tyrosine phosphorylation of the CreaT and tyrosine-phosphorylated c-Src (Tyr(416)) expression in the CreaT-c-Src complex were significantly increased after CLP compared with sham operation. These changes were observed in homogenates and plasma membrane fractions of gastrocnemius muscles. Although oral Cr supplementation increased myocellular free Cr levels equivalently in CLP and sham-operated animals, c-Src-related tyrosine phosphorylation of the CreaT in homogenates and plasma membrane fractions of gastrocnemius muscles was, however, downregulated in Cr-supplemented CLP animals compared with Cr-supplemented sham-operated rats. During sepsis, increased myocellular free Cr levels are associated with enhanced tyrosine phosphorylation of the CreaT, which is likely induced by active c-Src. Oral Cr supplementation downregulates c-Src-related tyrosine phosphorylation of the CreaT. The data suggest that myocellular Cr homeostasis and CreaT activity are tightly regulated and closely related during sepsis.