Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia - Online version e-ISSN: 1678-2674

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Acute inflammatory profile of patients submitted to pulmonary resection

Souza, Andrea Pelicia Roso De;

Palhares, Raquel;

Baltieri, Letícia;

Mussi, Ricardo Kalaf;

Antunes, Edson;

Mello, Glaucia Coelho De;

ABSTRACT Purpose: To establish a profile of the inflammatory response in the preoperative and postoperative period of pulmonary resection of patients without postoperative complications, in order to trace the inflammatory profile of lung resection surgery. Methods: Six collections of arterial and venous blood were performed for data analysis, one sample in the preoperative, immediate postoperative, 4, 8, 24, and 48 hours after surgery. Twenty-seven patients with a median age of 63 years old, ranging from 29 to 80 years old, were included. Results: The leukocyte count showed a significant increase in the times: immediate postoperative and 4 hours after surgery, in relation to the preoperative period. Concomitantly, there was an increase in lactate, heart rate, interleukin (IL)-6 and IL-8 after 4 hours of surgery. The platelet count showed a significant decrease in 48 h, associated with an increase in IL-1β and tumor necrosis factor-α. A significant increase in IL-10 was observed in the immediate postoperative. Conclusion: The study may contribute to the search for more specific and adequate alternatives for controlling the inflammatory response. In this way, the intervention would be specific to that cytokine that causes the greatest harm to the patient, as well as to the moment of the intervention.

Public health system expenditure on motor vehicle collisions in Brazil: an ecological study

Viana, Sofia Wagemaker;

Gerk, Ayla;

Schlindwein, Sofia Schmitt;

Marrazzo, Enzzo;

Feres, Brenda;

Ribeiro, Lívia;

Carroll, Madeleine;

Mooney, David Patrick;

Schnitman, Gabriel;

Camargo, Cristina Pires;

ABSTRACT Purpose: To assess the cost of traffic accidents in Brazil and the impact of age/location. Methods: All patients admitted to a Brazilian hospital due to traffic accidents from January 2012 to December 2022 and cost of hospital services were obtained from the Department of Information Technology of the Unified Health System. Demographic data were collected in the Brazilian Institute of Geography and Statistics database. Parametric and nonparametric data were analyzed. The Kruskal-Wallis’ test and a post-hoc test were used for data comparison. The ARIMA linear regression method for trend estimation. Results: In Brazil, 1.6 million individuals were involved in traffic accidents between 2012–2022, resulting in a cumulative hospital expenditure of US$ 38 million. The average hospital admission cost during this time was US$ 239.66, but no correlation was found between the cost per capita and driver population density increase. Hospitalization in the Midwest/South was higher. Conclusion: The economic impact of traffic accidents on the Brazilian public health system is significant. With a high number of victims admitted annually and evident regional and age-related disparities, there is a clear need for comprehensive and cost-effective healthcare strategies.

Application of double filtration plasmapheresis to cynomolgus monkeys: surgical techniques and a pilot study of pig fetal kidney transplantation

Watanabe, Genki;

Horikawa, Maiko;

Yamamoto, Izumi;

Endo, Tomohisa;

Watanabe, Takashi;

Hiratsuka, Akinori;

Takamura, Tsuyoshi;

Matsui, Kenji;

Matsumoto, Naoto;

Saito, Yatsumu;

Sasaki, Hiroshi;

Kiyoshi, Akihiko;

Kuroda, Takao;

Inoue, Makoto;

Kobayashi, Eiji;

Yokoo, Takashi;

ABSTRACT Purpose: To detail a technique to implant a double-lumen catheter to remove anti-pig antibodies. We transplanted fetal pig kidneys into cynomolgus monkeys using a double filtration plasma exchange (DFPP) protocol. Methods: Two approaches for double-lumen catheter insertion in monkeys (3–9.2 kg) were developed. DFPP was performed using hydroxyethyl starch (6%) as a replacement fluid. We transplanted fetal porcine kidneys, administered immunosuppressive agents, and evaluated the grafts. Results: The catheter insertion site was large, with postoperative hemostasis similar to blind subcutaneous puncture. Monkeys tolerated DFPP well, maintaining stable blood pressure. The technique reduced anti-pig antibodies by 67%, though acute rejection was not fully suppressed. Conclusion: A safe technique for double-lumen catheter placement in cynomolgus monkeys was developed, along with a DFPP protocol for reducing anti-pig antibodies.

Effect of multiorgan abdominal ischemic preconditioning on experimental kidney transplantation

Abate, Juan Cruz;

Marinoff, Ivana Ivanoff;

Arnal, Nathalie;

Machuca, Mariana;

Papa-Gobbi, Rodrigo;

Vecchio, Leandro;

Rumbo, Martín;

Stringa, Pablo;

Lausada, Natalia Raquel;

ABSTRACT Purpose: To mitigate ischemia-reperfusion injury (IRI) triggered in solid organ transplant procedures, we aimed to evaluate the effects of multi-organ abdominal ischemic preconditioning (MAIP) in the context of renal IRI. Methods: An experimental kidney transplant model was conducted. Rats were divided into three groups: an intervention free basal group from which physiological data was collected; a control group (CT), which consisted of transplanted animals without MAIP; and a treated group, in which a MAIP protocol was implemented in the donor during the procurement of the left kidney, monitoring the recipient for 24 hours. Results: Urea, creatinine, and lactate dehydrogenase, as well as histopathological analysis (Banff: CT 1,66 ± 0,57 vs. basal 0, and MAIP 1), showed a clear trend in favor of MAIP group. Similar results were observed for tumor necrosis factor-α, interleukin-6 and CXCL10, as well as indicators of oxidative stress, with statistically significant levels for CXCL10 [0,295 ± 0,0074 arbitrary units (AU) CT and 0,0057 ± 0,0065 AU MAIP] and TBARS (2,93 ± 0,08 nmol/μg CT; and 2,49 ± 0,23 nmol/μg MAIP; p 0.05). Conclusion: The findings indicated that the MAIP exerts a protective influence on the transplanted kidneys, functioning as an IRI-protective strategy and enhancing the parameters associated with renal graft functionality.

Peripheral nerve injury recovery enhanced by ceftriaxone: a preclinical investigation

Gunar, Berkin;

Bora, Ejder Saylav;

Topkar, Osman Mert;

Baysal, Özgür;

Shammadli, Ziya;

Erbas, Oytun;

ABSTRACT Purpose: To evaluate ceftriaxone’s potential in enhancing peripheral nerve injuries (PNIs) recovery. Methods: Thirty male Wistar rats were divided into control (no surgery), vehicle (sciatic nerve injury + 0.9% NaCl), and ceftriaxone (sciatic nerve injury + 50 mg/kg/day ceftriaxone) groups. Treatments were administered intraperitoneally for 12 weeks. Functional recovery was assessed using inclined plane tests and electromyography. Sciatic nerve regeneration was evaluated via histology, nerve growth factor (NGF) immunohistochemistry, and enzyme-linked immunosorbent assay. Results: Compared to the control group, inclined plane test scores, nerve action potentials, NGF expression, axon counts, and diameters were diminished in both injury groups (p 0.001). However, these parameters were significantly improved in the ceftriaxone group compared to the vehicle group (p 0.001). Increased fibrosis was observed in the ceftriaxone group. Conclusion: Ceftriaxone demonstrates potential as a pharmacological agent for PNI recovery by enhancing nerve regeneration and functional outcomes. Further studies are warranted to elucidate its mechanisms.

Performance of blood concentrates in controlling inflammatory signs and symptoms after lower third molar extractions: an overview

Almeida, Vinícius Lima De;

Costa, Marcelo Dias Moreira De Assis;

Mesquita, Caio Melo;

Vieira, Walbert Andrade;

Lima, Rafael Rodrigues;

Lima, Livia Bonjardim;

Rode, Sigmar De Mello;

Paranhos, Luiz Renato;

ABSTRACT Purpose: To summarize the available evidence and answer the following question: What is the current knowledge on the performance of blood concentrates in handling sequelae after lower third molar extractions with the evidence available in systematic reviews? Methods: An electronic search was conducted across nine databases. The study included systematic reviews with or without meta-analyses investigating the performance of blood concentrates in managing sequelae after lower third molar extractions. The four outcomes analyzed were pain, edema, mouth opening, and alveolar osteitis. The AMSTAR-2 tool assessed the methodological quality of the included systematic reviews, while ROBIS evaluated the risk of bias. Results: The electronic search revealed 690 records, of which 15 were eligible systematic reviews for the present study. Overall, these reviews evaluated 75 primary studies published from 2007 to 2023. According to AMSTAR-2, only one systematic review presented high methodological quality. The ROBIS tool showed two systematic reviews with a low risk, and the others had a high risk of bias. Conclusion: The current evidence is based on only one systematic review with high methodological quality and a low risk of bias, while the others exhibited a high risk of bias and low methodological quality. Therefore, the evidence regarding the efficacy of blood concentrates in controlling sequelae following lower third molar extractions is inconclusive.

ACTA Cirúrgica Brasileira
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