Impact of preoperative carbohydrate loading on postoperative course and morbidity in debulking surgery for epithelial ovarian cancer

Despite the theoretical benefits, the favorable effect of preoperative carbohydrate loading on postoperative morbidity remains controversial. Most of the outcomes reported in the literature are derived from non-gynecologic surgery data, with only one study involving a limited number of patients specifically in gynecological oncology. The present study aimed to investigate the impact of carbohydrate loading, as a single element of enhanced recovery after surgery protocols, on postoperative course and morbidity in patients undergoing debulking surgery for epithelial ovarian cancer (EOC). The present study was a non-randomized, prospective cohort trial enrolling patients with EOC who underwent surgery between June 2018 and December 2021. An oral carbohydrate supplement with a dose of 50 g was given to patients 2-3 h before anesthesia. Data on postoperative course and morbidity were collected and compared with data of a historical cohort including consecutive patients who underwent surgery without a carbohydrate loading between January 2015 and June 2018. Analyses were performed on a total of 162 patients, including 72 patients in the carbohydrate loading group and 90 patients in the control group. Median length of hospital stay (11 days vs. 11 days; P=0.555), postoperative days 1-7 serum c-reactive protein levels (P=0.213), 30-day readmission (11.6% vs. 11.5%, P=0.985), 30-day relaparotomy (2.8% vs. 3.4%, P=0.809) and 30-day morbidity (48.6% vs. 46.7%; P=0.805) were comparable between the cohorts. No significant differences in grades of morbidities were identified between the cohorts (P=0.511). Multivariate analysis revealed that the sole independent risk factor for any postoperative morbidity was operative time. In conclusion, based on the results of the present study, postoperative course and morbidity seemed to be unaffected by carbohydrate loading in patients undergoing debulking surgery for EOC.

Prevalence of appendicolith in children with acute appendicitis and its correlation with disease severity

OBJECTIVE

Appendicitis typically develops secondary to obstruction of appendiceal lumen and one of the causes of obstruction is appendicolith. Appendicolith has become a relevant issue due to heightened interest in the treatment of uncomplicated appendicitis with antibiotics. This study aimed to determine the prevalence of appendicolith in pediatric patients with appendicitis and to investigate the association between the presence of appendicoliths and radiological disease severity.

METHODS

Patients under the age of 18 diagnosed with appendicitis between March 2021 and April 2022 and had available preoperative computed tomography (CT) images were identified retrospectively. The presence of an appendicolith and if present, its longest diameter in the axial plane, its visibility on direct radiographs, appendiceal diameter, degree of inflammation, and the presence of perforation were evaluated. Radiological severity of inflammation was rated on a 3-point scale.

RESULTS

CT scans were available in 77 (32.1%) of 240 patients with histopathologically confirmed diagnosis of acute appendicitis. 39% (n=30) of the patients were girls and the median age was 13 years. The prevalence of appendicoliths detected on CT scans was 32.5% (n=25) and the median size of appendicoliths was 6 mm. In only 1 patient, appendicolith was detected by direct radiography. The median appendiceal diameter was significantly greater in the group with appendicoliths (10 mm vs. 8 mm; p=0.001). A moderate correlation was found between appendicolith size and appendiceal diameter (r=0.407, p=0.043). Perforation was present in 10.4% (n=8) of the patients with appendicitis and 25% (n=2) of them had appendicoliths. The presence of appendicoliths was not significantly associated with the occurrence of perforation (p=0.485). Periappendiceal inflammation scores were 1.52±0.74 in the group with appendicoliths and 1.42±0.63 in the group without appendicoliths (p=0.591).

CONCLUSION

The prevalence of CT-detected appendicoliths was 32.5% in pediatric patients with appendicitis. Patients with appendicoliths showed higher inflammation scores and greater appendiceal diameter than those without appendicoliths. These factors may be associated with poor outcomes in patients with appendicoliths treated with antibiotics. Therefore, knowledge of the prevalence of appendicoliths and questioning their presence may guide clinicians when deciding on the suitability of nonoperative treatment in a patient diagnosed with uncomplicated acute appendicitis.

Can renalase be a novel candidate biomarker for distinguishing renal tumors?

Renalase (RNLS) is synthesized mainly in renal tissues. The function of RNLS in cancerous renal tissues has not been investigated. We investigated the synthesis of RNLS in chromophobe renal cell carcinoma, papillary renal cell carcinoma and clear cell renal cell carcinoma with Fuhrman grades (FG): FG1, nucleoli are absent or inconspicuous and basophilic; FG2, nucleoli are conspicuous and eosinophilic and visible but not prominent; FG3, nucleoli are conspicuous and eosinophilic; FG4, extreme nuclear pleomorphism, multinucleate giant cells, and/or rhabdoid and/or sarcomatoid differentiation. We used 90 tissue samples including 15 healthy controls, 15 chromophobe renal cell carcinoma tissues and 10 papillary renal cell carcinoma renal tissues: 12 FG1, 14 FG 2, 14 FG 3 and 10 FG4. RNLS in the tissue samples was measured using enzyme linked immunosorbent assay and immunostaining of RNLS in these tissues. RNLS was significantly greater in the chromophobe renal cell carcinoma and papillary renal cell carcinoma tissues than the control. The least amount of RNLS was found in the renal tissues of clear cell renal cell carcinoma FG1; the amount of RNLS increased as the FG grades increased. Because RNLS increased significantly in renal tissues due to cancer, except for clear cell renal cell carcinoma FG1, RNLS may be useful biomarker for distinguishing grades of renal cancer. Because RNLS increases cell survival, anti-RNLS preparations may be useful for treating cancer in the future.

The comparison of the effects of hepatic regeneration after partial hepatectomy, silybum marinaum, propofol, N-acetylcysteine and vitamin E on liver

AIM

We investigated the comparison of the effects of N-acetylcysteine, silybum marinaum, propofol, and vitamin E on liver hepatic regeneration after partial hepatectomy.

METHOD

Forty-eight rats were randomized into 6 different groups of the same age and weight. After partial hepatectomy, all animals were resuscitated with 5 ml of isotonic sodium chloride solution administered subcutaneously while group 1 (sham) did not receive any injection, group 2 (control) received serum physiologic intraperitoneally, group 3 received 25 mg /kg of propofol intraperitoneally, group 4 received 20 mg/kg of N-acetylcysteine intraperitoneally, group 5 received 400 mg/kg of vitamin E intraperitoneally, and group 6 received 10 mg/kg of silybum intraperitoneally. None of these groups were given antibitotics. On the third day, a half of the rats, and on the seventh day, the other half of rats were reoperated and sacrificed.

RESULTS

Blood samples were used for biochemical parameters (AST, ALT). Ki-67 proliferation index was used for histopathologic parameters. A statistically meaningful difference was detected in silybum, vitamin E, N-acetylcysteine, and propofol groups for AST, ALT levels when compared to control and sham groups (p<0.05). Ki-67 regeneration proliferation index of all groups, which were given agents on the third and seventh days were statistically higher than the control and sham groups (p<0.05). During the evaluation, AST, ALT, Ki-67, Ro (regeneration value) levels of silybum group displayed a statistically significant difference according to other groups (p<0.05).

CONCLUSION

Our experimental study indicates that hepatic regeneration after partial hepatectomy was meaningful and significant in groups with intraperitoneal administration of silybum marinaum,vitamin E, N-acetylcysteine and propofol. Hepatic regeneration rate was particularly higher in silybum group compared to other groups (Fig. 16, Ref. 26).

The efficacy of conservative treatment for late term ovarian torsion

BACKGROUND/PURPOSE

Recent reports have focused on detorsion after ovarian torsion in the literature. The aim of the study was to investigate late term changes in both ovaries after delayed detorsion following ovarian torsion in rats.

MATERIALS

Female, prepubertal, Wistar albino rats were divided into four groups (n = 6/group). The left ovaries were used for the study and the right ovaries were kept as the control. The groups were constituted as follows: Group 1: left ovarian fixation, bilateral oophorectomy 48 hours later; Group 2: left ovarian torsion and fixation, bilateral oophorectomy 48 hours later; Group 3: detorsion 48 hours after torsion and bilateral oophorectomy after another 48 hours; Group 4: detorsion 48 hours after torsion and bilateral oophorectomy after 21 days. The total injury score (TIS) was compiled histologically in a double-blind fashion. Congestion, edema, bleeding and polymorphonuclear lymphocyte infiltration were assessed for TIS.

RESULTS

The TIS was found to be 8 points in Group 1; 38 in Group 2; 28 in Group 3 and 12 in Group 4, respectively. The TIS was based on results from the left ovaries in Group 1, whereas 31 points were attributable to the left ovaries and 7 to the right ovaries in Group 2. In Groups 3 and 4, TIS points were the same in both study and control ovaries. The difference between the left ovaries of Groups 1 and 2 and the left ovaries of Groups 2 and 4 was statistically significant (p < 0.05).

CONCLUSION

Viable ovarian tissue can be detected even after 48 hours of torsion, which is a relatively long period of ischemia. Tissue injury decreases significantly after detorsion during late recovery. In view of previous case reports in the literature and the present findings, detorsion is recommended in children with ovarian torsion regardless of the ischemic period and/or macroscopic appearance.