Effects of gastric sleeve surgery on the serum levels of GH, IGF-1 and IGF-binding protein 2 in healthy obese patients.

BACKGROUND: Bariatric surgery is an effective treatment for severe obesity. It also ameliorates diabetes independently of weight loss through mechanisms that are not fully understood. In this study, we investigated the levels of GH, IGF-1 and IGF-binding protein 2 (IGFBP-2) after gastric sleeve surgery in healthy obese individuals. METHOD: This study was conducted in 33 obese (BMI > 38.3) healthy male subjects aged 25 to 50 years undergoing sleeve gastrectomy. GH, IGF-1 and IGFBP-2 levels were evaluated by ELISA at baseline and 6-12 months after surgery. Other parameters, such as glucose, BMI, insulin, HOMA-IR and lipid profile, were also investigated. RESULTS: Systemic GH (12.32 vs. 50.97 pg/mL, p < 0.001) and IGFBP-2 levels (51.86 vs. 68.81 pg/mL, p < 0.001) were elevated after bariatric surgery. There was no change in IGF-1 level from before to after surgery. BMI (52.18 vs. 40.11, p = 0.001), insulin (19.35 vs. 8.80 mIU/L, p < 0.001) and HOMA-IR index (6.48 to 2.52, p < 0.001) were reduced after surgery. Lipid profile analysis revealed that total cholesterol (4.26 vs. 5.12 mmol/L, p < 0.001) and high-density lipoprotein (HDL) (0.90 to 1.55 mmol/L, p < 0.001) were increased, while triglycerides were decreased, after surgery (1.62 vs. 1.05 mmol/L p < 0.001). GH, IGF-1, and IGFBP-2 were not correlated with insulin or lipid parameters. CONCLUSIONS: Our study suggests that improved circulating GH and IGFBP-2 levels may mediate the beneficial effects of gastric sleeve surgery in improving insulin sensitivity and reducing insulin demand.

Outcome of Childhood Cerebellar Pilocytic Astrocytoma: A Series With 20 Years of Follow Up.

BACKGROUND: Cerebellar pilocytic astrocytoma (PCA) is one of the few CNS tumors that can be cured with gross-total removal (GTR). In this series, we had 39 patients diagnosed with cerebellar PCA, 27 patients (70%) had GTR, and mean follow-up period was 62 months with no tumor recurrence. OBJECTIVE: To assess the long-term outcome of childhood cerebellar PCA treated at our institute during the period 2000-2020 and to highlight our surgical protocol. METHODOLOGY: Retrospective review of all patients under 18 years of age who were diagnosed with cerebellar PCA and had surgical excision between 2000 and 2020 at the Medical City of King Saud University. RESULTS: The study included 39 patients: 17 males and 22 females, the mean age was 8.4 years. Radiologically, the tumor was solid in eight patients, cystic in 15 patients, and mixed components were found in 16 patients. The lesion was located in the right cerebellar hemisphere in 12 patients, left cerebellar hemisphere in five patients, and midline 22 patients. The tumor size ranged from 2 to 7 cm in its greatest diameter, it was <5 cm in 13 patients and >5 cm in 26 patients. Thirty-one patients had preoperative hydrocephalus. GTR of the tumor was achieved in 27 patients and subtotal resection (STR) was done in 12 patients, 18 patients required permanent ventriculoperitoneal (V-P) shunt, and five patients had postoperative radiotherapy. Postoperative complications included infection in two patients, cerebellar mutism in two patients, and significant neurologic disability in four patients. The duration of follow-up ranged from 0 to 240 months (mean follow-up period: 62.0 months). The outcome at 10 years was good in 30 patients, fair in four patients, poor in four patients, and one patient died. Recurrence was documented in nine patients, seven of them had GTR and two had STR. CONCLUSION: GTR, if achievable, is curative for childhood cerebellar PCA. Many posterior fossa surgical complications could be avoided with watertight dural closure. Although new dural substitutes are available we prefer using autologous grafts (pericranium). It is easy to harvest pericranial graft from the external ventricular drain (EVD) site. The insertion of EVD synchronously with GTR of the tumor and gradual weaning of EVD could avoid the insertion of V-P shunt.

Traumatic spinal injuries in Saudi Arabia: a retrospective single-centre medical record review.

OBJECTIVES: To describe the patterns and outcomes of traumatic spinal injuries (TSIs) in a tertiary care trauma centre in Riyadh, Saudi Arabia. DESIGN: Retrospective medical record review. SETTING: Level 1 trauma centre for all patients presented from 1 February 2016 to 31 December 2018. PARTICIPANTS AND DATA: Records of patients presenting with any spinal trauma were reviewed, and the data obtained included age, gender, nationality (as Saudi and non-Saudi), date of presentation, site of fracture/injury, associated injuries, mechanism of injury, presence of neurological involvement and hospital mortality. MAIN OUTCOMES: Frequencies of different types of TSI across various subgroups. RESULTS: We identified 692 patients who presented with TSI throughout the study period. The mean age was 36.9 years. Males represented 83.2% (n=576) of the sample size, and the most common mechanism of injury was motor vehicle collision (MVC), accounting for 66.8% of cases (n=462), while fall-related injuries were seen in 31.6% of cases (n=219). A total of 454 (65.6%) of all patients were Saudi, and 332 (73.1%) of the TSIs in Saudis were due to MVC. Non-Saudi cases accounted for 238 (34.4%) of all patients, and 89 (37.4%) of the non-Saudi injuries were due to falls from height, and this association was statistically significant (p<0.001). CONCLUSION: TSI was not thoroughly examined in Saudi Arabia; therefore, this study is considered the first to be done in the Kingdom using a representative sample. The fact that non-Saudi patients had a higher proportion of falls as a mechanism of injury should be taken into consideration in terms of raising awareness and taking more safety precautions, as most construction workers tend to be expatriates.

Outcome of diaphyseal pediatric forearm fractures following non-surgical treatment in a Level I Trauma Center.

OBJECTIVES: Pediatric diaphyseal forearm fractures are common injuries of childhood. Conservative modality of treatments is usually preferred when they are possible. We identified factors that may affect closed reduction success or lead to redisplacement in forearm diaphyseal fractures in children. METHODS: This was a retrospective study from a level I trauma center on patients up to 18 years of age who presented with forearm diaphyseal fractures from January 1, 2007, to December 31, 2015. Cases were obtained from medical records. Data were collected and confirmed by plain films and medical files. RESULTS: We included 145 patients in this study. The majority (86.2%) were boys. Around 29% of trials of closed reduction failed, and the patients were subsequently treated surgically. Following trials of closed reduction, 82.4% of both bone cases were successfully reduced compared to 42.9% of radius shaft cases (P = 0.006). Redisplacement following non-surgical treatment in the first follow-up was found in 32% of both bone cases and 13.3% of radial shaft cases. All Galeazzi cases that were successfully treated with closed reduction presented with no redisplacement on follow-up. CONCLUSION: Immediate surgical management might be considered in older children, especially above 12 years of age since they have a higher failure rate of closed reduction than younger ones. Fracture site should be taken into account when following pediatric diaphyseal forearm fractures following conservative treatments as cases with both bone involvement have a high success rate of closed reduction and considerably high rate of redisplacement compared to others.

Patterns of paediatric forearm fractures at a level I trauma centre in KSA.

OBJECTIVES: The current literature does not clearly elaborate the pattern of paediatric forearm fractures. This study aims to identify patterns of paediatric forearm fractures in KSA. METHODS: This retrospective study was conducted in a level I trauma centre. The study population comprised patients up to 18 years of age who presented with forearm fractures between 2007 and 2015. The demographic data of the recruited patients were obtained from medical files, and fractures were identified using plain films. Mean and standard deviations were used for continuous variables, whereas frequencies and percentages were used for categorical variables. RESULTS: This study included 318 patients, ranging in age from 1.2 to 18 years (average: 10.42 ± 4.56 years). The majority were boys (80.8%) and 53.1% were <12 years of age. Girls were significantly more prevalent in the <12-year-old group than in the ≥12-year-old group (p < 0.001). A fall was the mechanism of injury in the majority of patients (82.1%) in the <12-year-old group compared with the ≥12-year-old group (p < 0.001). There was no statistically significant difference in fracture site between the two age groups. The distal forearm was the most common site fractured (47.8%), followed by the distal third of the forearm diaphysis (34.2%). CONCLUSION: Forearm fractures are commonly seen in school-age boys. The distal radius is the most commonly fractured site reported in this study. A fall was the most common mechanism of injury, and safety measures should be implemented in places where children frequently gather.