Efficacy of interventions for prevention and correction of overweight and obesity in children 7–8 years old: a meta-analysis

The rapid increase in overweight and obesity in children is a global public health problem. Interventions to reduce the prevalence of obesity before puberty are considered to be the most effective, but the results of trials are not consistent enough. We performed a meta-analysis of the efficacy of interventions to prevent or correct overweight and obesity in pre-pubertal children. Thirty-one Cochrane systematic reviews were analyzed, the results of 10 RCTs and two prospective comparative studies were extracted. All trials had an moderate or high risk of bias. According to the results of meta-analyzes, the prevention of overweight and obesity through recommendations of lifestyle modification is effective, the difference in a BMI decrease is -0.19, 95% CI [-0.35; -0.03], compared with the absence of intervention, in children 7–8 years old if applied within 2–4 years, but not within one year or less. The effect of non-drug interventions in children with overweight or obesity was not revealed

Central diabetes insipidus after transnasal adenomectomy:trends in development and recovery, clinical and laboratory characteristics

Background: Currently, there is an increase in the incidence of chiasmosellar neoplasms and respective neurosurgical interventions. The postoperative period may be complicated by vasopressin synthesis and secretion disorders. Both the development and abortion of the fluid and electrolyte disorders can be delayed. Due to a tendency for an earlier discharge of the patients, a proportion of the disorders remain unaddressed. There is no data on the evolution and time to regress of transient abnormalities in the published studies with a long-term postoperative follow-up. Aim: To assess the incidence, evolution and regression trends, clinical and laboratory characteristic of postoperative central diabetes insipidus (CDI). Materials and methods: The single center retrospective comparative study included 150 patients who had undergone transnasal adenomectomy for Cushing’s disease, acromegaly, prolactinomas, and hormonally inactive pituitary adenomas. Clinical and laboratory assessments were performed pre- and postoperatively. In the event of CDI, treatment with desmopressin was administered. Ninety six (96) patients aged 20 to 65 years (median age 43 [35; 54] years) were followed for at least 60 months after the procedure. Results: Median time to the onset of permanent CDI (pCDI) was Day 5 [1; 9.5] after surgery, that of transient CDI (tCDI) Day 1 [1; 4.5] with its remission by Day 30 [1.5; 199]. The maximally delayed onset was on Day 86 for the pCDI and Day 61 for tCDI; that to the remission of tCDI, 738 days. At discharge from the hospital, postoperative CDI was present in 34/150 patients (23%; 95% CI 17–30), and in 25/150 of the patients (16%; 95% CI 12–24) the disorder resolved. At 5 to 7 years after surgery, the prevalence of pCDI was 16% (95% CI 10–24), that of tCDI 35% (95% CI 27–45), 49% (95% CI 39–59) of the patients had no abnormalities (respective absolute patient numbers being 15, 34, and 47 of 96 followed for at least 60 months). At Days 1 to 7 after surgery, the patients with pCDI and tCDI had more frequent complaints of dry mouth and thirst than those without the disorder. These complaints were verified by higher 24-hour fluid intake and diuresis at the day of surgery and Days 5 to 7 thereafter, compared to those in the patients without the disorders. At Days 5–7 after surgery, urine sodium and urine specific gravity were significantly lower, as was urine osmolality at all postoperative stages, compared to those in the patients without the disorders. Conclusion: Within 2 years after transnasal adenomectomy, the incidence of postoperative CDI is gradually decreasing (from 23% to 16%). Due to potentially delayed manifestation of water and electrolyte imbalance, it is recommended that these parameters should be monitored at least for 2,5 months after the discharge from hospital. Due to potentially delayed remission (12 months and more), follow-up and monitoring for 1.5 years is reasonable, with periodic assessment of sodium levels, fluid intake and excretion, and attempts to withdraw desmopressin

Mathematical model for preoperative differential diagnosis for the parathyroid neoplasms

Background and objective: Preoperative diagnosis of parathyroid carcinoma (PC) is critical for the determination of the scope of surgical intervention. Nowadays, specific diagnostic markers for differentiation of PC and benign tumors are unknown, and less than half of patients with PC undergo necessary en bloc surgery. The aim of this study was to develop the instrument for preoperative diagnosis of PC. Methods: A multi-center retrospective study included 242 patients with primary hyperparathyroidism: 50 patients with PC, 30 with аtypical adenoma (AA), and 162 with adenoma of the parathyroid glands. Results: Patients with PC and AA had higher levels of PTH, ionized and albumin-corrected calcium, ALP, volume and the largest diameter of neoplasm, and the higher frequency of GFR decrease less than 60 ml/min/1.73 m2 compared to patients with adenoma. The frequency of low-energy fractures was higher in the carcinoma group versus the adenoma group (32% vs 8%). Heterogeneous structure and indefinite contour of glands detected by US were more typical for PC than for AA and adenomas. The mathematical model was developed using CatBoost gradient boosting algorithm for the noninvasive preoperative differential diagnosis of PC, AA, and adenoma. Conclusions: Model can predict adenoma with PPV 100% and PC with PPV 81–92%. Using model clinicians could plan extended en bloc resection for PC and selective parathyroidectomy for adenoma. If AA is predicted, he has to make a decision on the choice of the necessary volume of PTE based on his experience, because AA are the zone of uncertainty