MiRNA-192-5p-targeted activated leukocyte cell adhesion molecule improved inflammatory injury of neonatal necrotizing enterocolitis.

BACKGROUND: Neonatal necrotizing enterocolitis (NEC) is a common gastrointestinal emergency in neonates. MiRNA-192-5p was found associated with ulcerative colitis (UC) progression, also with aberrant expression in intestinal cancer tissue. However, the effects of miRNA-192-5p on NEC have not been reported. METHODS: Based on the bioinformatics analysis of the GEO dataset, miR-192-5p was identified as the differentially expressed miRNA in NEC, and activated leukocyte cell adhesion molecule (ALCAM) was predicted as its target. After that, in vitro, rat intestinal epithelial cell-6 (IEC-6) were stimulated with LPS to construct a cell model of NEC. IEC-6 cells were transfected with miRNA-192-5p mimics, miRNA-192-5p inhibitors, or miRNA-192-5p inhibitors + sh-ALCAM, and relevant negative control. In vivo, SD rats were treated with artificial feeding, hypoxic reoxygenation, cold stimulation, and LPS gavage to induce NEC, followed by injection of agomiR-NC or agomiRNA-192-5p. Then effects of miRNA-192-5p on NEC model IEC-6 cell viability, apoptosis, ALCAM expression, Interleukin (IL)-1ß and IL-6 levels, intestinal injury, intestinal permeability were detected. RESULTS: MiRNA-192-5p expression was downregulated in NEC IEC-6 cells, whose overexpression increased IEC-6 cell viability. MiRNA-192-5p inhibitors increased IL-1ß, IL-6 levels and promoted IEC-6 cell apoptosis. MiRNA-192-5p targeting of ALCAM decreased ALCAM expression, IL-1ß, and IL-6 levels. AgomiRNA-192-5p decreased ALCAM, IL-1ß, and IL-6 levels in intestinal tissue and pathological damage and increased miRNA-192-5p levels. CONCLUSION: MiR-192-5p protects against intestinal injury by inhibiting ALCAM-mediated inflammation and intestinal epithelial cells, which would provide a new idea for NEC treatment.

Hyperfibrinogenemia and hyponatremia as predictors of perforated appendicitis in children: A retrospective cohort study.

PURPOSE: The aim of this study was to investigate the predictive value of hyperfibrinogenemia and hyponatremia for perforated appendicitis in children. METHODS: A retrospective review of 521 pediatric patients (≤ 15 years) with acute appendicitis confirmed by histopathology from January 2017 to December 2020 was performed. Patients were divided in two groups, those with non-perforated (n = 379; 73%) and perforated appendicitis (n = 142; 27%). The serum values of sodium and fibrinogen were taken before surgery. We performed the receiver operating characteristic analysis for the two biochemical markers. The sensitivity, specificity, positive and negative predictive values for perforated appendicitis in the presence of hyponatremia and hyperfibrinogenemia were calculated. RESULTS: Hyperfibrinogenemia (≥ 4.0 g/L) was found in 58.45% of perforated appendicitis and 104 of 142 (73.34%) children with perforated appendicitis had hyponatremia (≤ 135 mmol/L). The perforated appendicitis group had a higher mean fibrinogen concentration (P = 0.001). There was a statistically significant difference in mean serum sodium levels between the perforated appendicitis and non-perforated appendicitis groups (P = 0.016). Receiver operating characteristic curve analysis for fibrinogen, sodium and combination of the both markers shown the combination had the largest area under the curve in identifying children with perforated acute appendicitis (0.858) (95% CI, 0.82-0.90) compared with fibrinogen (0.815) (95% CI, 0.77-0.86) and sodium 0.818 (95% CI, 0.78-0.86) alone. Furthermore, the combination of both markers had the best positive and negative predictive value for appendix perforation compared to fibrinogen and sodium. CONCLUSION: Hyponatremia and/or hyperfibrinogenemia are excellent markers for predicting perforated appendicitis in children. We propose that plasma sodium and/or fibrinogen concentrations be utilized as a supplementary to guide individual treatment decisions in children with appendicitis, such as surgery timing and nonoperative management options.

Fibrinogen as a Marker of Overall and Complicated Acute Appendicitis: A Systematic Review and Meta-Analysis.

INTRODUCTION: We performed a systematic review and meta-analysis to evaluate the diagnostic value of fibrinogen (FB) for acute appendicitis and whether it can distinguish between uncomplicated and complicated appendicitis. METHODS: A search of electronic information sources was conducted to identify all studies reporting FB in patients with clinical suspicion or confirmed diagnosis of acute appendicitis. We considered two comparisons: (1) appendicitis versus no appendicitis and (2) uncomplicated appendicitis versus complicated appendicitis. To assess the diagnostic value of FB, sensitivity, specificity, diagnostic odds ratios, summary receiver operating characteristic curves, area under the curve, and 95% confidence intervals (95% CIs) were estimated. RESULTS: Seven studies (917 confirmed appendicitis and 1026 controls) for overall appendicitis and eight studies (602 complicated appendicitis and 1386 uncomplicated appendicitis) for complicated appendicitis were identified. The pooled sensitivity and specificity of FB for the diagnosis of appendicitis were 0.62 (95% CI: 0.58-0.65) and 0.79 (95% CI: 0.77-0.82), respectively. FB was more accurate in diagnosing complicated appendicitis, with a pooled sensitivity of 0.74 (95% CI: 0.69-0.78), specificity of 0.76 (95% CI: 0.73-0.78), and the area under the curve was 0.84. CONCLUSIONS: As per this meta-analysis, FB has a potential diagnostic value in overall appendicitis and that it has a higher diagnostic value in the diagnosis of complicated appendicitis. Future well-designed prospective studies are needed to corroborate the findings.

Off-label uses of ustekinumab.

Ustekinumab (brand name Stelara®) is a human interleukin-12 and -23 antagonist and has been indicated for the treatments of moderate to severe plaque psoriasis, psoriatic arthritis, Crohn's disease and ulcerative colitis. This review aims to synthesize and interpret the literature evaluating the off-label uses of ustekinumab. We performed searches in PubMed and ClinicalTrials.gov for clinical trials, observational studies, case series, and case reports evaluating label uses of ustekinumab. Studies evaluated the efficacy of ustekinumab for the following conditions: other types of psoriasis (expect plaque psoriasis and psoriatic arthritis), pityriasis rubra pilaris, hidradenitis suppurativa, atopic dermatitis, pyoderma gangrenosum, et al. Based on the available literature, ustekinumab appears to be a potential treatment choice for many other diseases. However, more clinical trials data are needed to adequately assess the safety and efficacy of ustekinumab for the treatment of these conditions.

A new epigean species of Trichopeltis Pocock, 1894 from southwest China (Diplopoda, Polydesmida, Cryptodesmidae).

A new species of Cryptodesmidae, Trichopeltisjiyue sp. nov., is described from the Ailaoshan National Nature Reserve in Yunnan Province, southwest China. The new species is distinguished from its congeners by the gonopodal coxae with two conspicuous wing-like processes, the relatively long, stout setae on the gonopodal coxae, gonopodal telopodites glabrous and four-branched, and the acropodite curved caudolaterad. The new species is the second record of an epigean species of genus Trichopeltis Pocock, 1894 in China. An updated key is provided to all 14 presently known species.

Topological superconductivity from unconventional band degeneracy with conventional pairing.

We present a new scheme for Majorana modes in systems with nonsymmorphic-symmetry-protected band degeneracy. We reveal that when the gapless fermionic excitations are encoded with conventional superconductivity and magnetism, which can be intrinsic or induced by proximity effect, topological superconductivity and Majorana modes can be obtained. We illustrate this outcome in a system which respects the space group P4/nmm and features a fourfold-degenerate fermionic mode at (π,  π) in the Brillouin zone. We show that in the presence of conventional superconductivity, different types of topological superconductivity, i.e., first-order and second-order topological superconductivity, with coexisting fragile Wannier obstruction in the latter case, can be generated in accordance with the different types of magnetic orders; Majorana modes are shown to exist on the boundary, at the corner and in the vortices. To further demonstrate the effectiveness of our approach, another example related to the space group P4/ncc based on this scheme is also provided. Our study offers insights into constructing topological superconductors based on bulk energy bands and conventional superconductivity and helps to find new material candidates and design new platforms for realizing Majorana modes.

Yolk Sac Tumor in an Infant with Androgen Insensitivity Syndrome: A Case Report and Review of the Literature.

Background: Androgen insensitivity syndrome (AIS) is a disorder of sexual differentiation caused by complete or partial resistance to the biological action of androgens. The common malignant tumors associated with this syndrome are seminomas. However, the risk of malignancy in childhood remains low. Case Report: A 8-month-old child with a female phenotype and a 46, XY karyotype, presented with bilateral inguinal hernia. The patient underwent right radical inguinal orchiectomy with high ligation of the spermatic cord and laparoscopic percutaneous extra-peritoneal herniorrhaphy. Final pathology confirmed a pure yolk sac tumor (YST) from the right testis. Androgen receptor (AR) gene mutation was found in the children. The follow-up ultrasonography shown no recurrence, with serum AFP returned to normal within 3 months. Conclusion: The case we presented is relatively infrequent in the literature with yolk sac tumor in a AIS children presented with a palpable lump inguinal region.