Post-operative sepsis-induced acute respiratory distress syndrome: risk factors for a life-threatening complication.

Introduction: Prevalence and mortality of the acute respiratory distress syndrome (ARDS) in intensive care units (ICU) are unacceptably high. There is scarce literature on post-operative sepsis-induced ARDS despite that sepsis and major surgery are conditions associated with ARDS. We aimed to examine the impact of post-operative sepsis-induced ARDS on 60-day mortality. Methods: We performed a secondary analysis of a prospective observational study in 454 patients who underwent major surgery admitted into a single ICU. Patients were stratified in two groups depending on whether they met criteria for ARDS. Primary outcome was 60-day mortality of post-operative sepsis-induced ARDS. Secondary outcome measures were potential risk factors for post-operative sepsis-induced ARDS, and for 60-day mortality. Results: Higher SOFA score (OR 1.1, 95% CI 1.0-1.3, p = 0.020) and higher lactate (OR 1.9, 95% CI 1.2-2.7, p = 0.004) at study inclusion were independently associated with ARDS. ARDS patients (n = 45) had higher ICU stay [14 (18) vs. 5 (11) days, p < 0.001] and longer need for mechanical ventilation [6 (14) vs. 1 (5) days, p < 0.001] than non-ARDS patients (n = 409). Sixty-day mortality was higher in ARDS patients (OR 2.7, 95% CI 1.1-6.3, p = 0.024). Chronic renal failure (OR 4.0, 95% CI 1.2-13.7, p = 0.026), elevated lactate dehydrogenase (OR 1.7, 95% CI 1.1-2.7, p = 0.015) and higher APACHE II score (OR 2.7, 95% CI 1.3-5.4, p = 0.006) were independently associated with 60-day mortality. Conclusion: Post-operative sepsis-induced ARDS is associated with higher 60-day mortality compared to non-ARDS post-operative septic patients. Post-operative septic patients with higher severity of illness have a greater risk of ARDS and worse outcomes. Further investigation is needed in post-operative sepsis-induced ARDS to prevent ARDS.

Repeated pancreatic resection for pancreatic metastases from renal cell Carcinoma: A Spanish multicenter study (PANMEKID).

BACKGROUND AND OBJECTIVES: Recurrent isolated pancreatic metastasis from Renal Cell Carcinoma (RCC) after pancreatic resection is rare. The purpose of our study is to describe a series of cases of relapse of pancreatic metastasis from renal cancer in the pancreatic remnant and its surgical treatment with a repeated pancreatic resection, and to analyse the results of both overall and disease-free survival. METHODS: Multicenter retrospective study of patients undergoing pancreatic resection for RCC pancreatic metastases, from January 2010 to May 2020. Patients were grouped into two groups depending on whether they received a single pancreatic resection (SPS) or iterative pancreatic resection. Data on short and long-term outcome after pancreatic resection were collected. RESULTS: The study included 131 pancreatic resections performed in 116 patients. Thus, iterative pancreatic surgery (IPS) was performed in 15 patients. The mean length of time between the first pancreatic surgery and the second was 48.9 months (95 % CI: 22.2-56.9). There were no differences in the rate of postoperative complications. The DFS rates at 1, 3 and 5 years were 86 %, 78 % and 78 % vs 75 %, 50 % and 37 % in the IPS and SPS group respectively (p = 0.179). OS rates at 1, 3, 5 and 7 years were 100 %, 100 %, 100 % and 75 % in the IPS group vs 95 %, 85 %, 80 % and 68 % in the SPS group (p = 0.895). CONCLUSION: Repeated pancreatic resection in case of relapse of pancreatic metastasis of RCC in the pancreatic remnant is justified, since it achieves OS results similar to those obtained after the first resection.

Role adoption, anxiety, depression and loneliness in family caregivers of patients with chronic diseases / Adopción del rol, ansiedad, depresión y soledad en cuidadores familiares de pacientes con enfermedades crónicas / Adoção do papel, ansiedade, depressão e solidão em cuidadores familiares de pacientes com doenças crônicas

Objective: to describe and explore the relationship of loneliness, anxiety and depression with adoption of the caregiver role among individuals caring for people with chronic diseases in Colombia. Methods: this was an exploratory and cross-sectional study involving 960 primary caregivers of individuals with chronic diseases. We applied the Caregiver Role Adoption Scale, the University of California at Los Angeles Loneliness Scale, and the Anxiety and Depression Scale. Principal component and multiple correspondence analyses were performed for clustering. Results: among the participating caregivers, 40.8% reported experiencing depression, 59% reported anxiety, 54.6% reported moderate to severe loneliness, and 88.6% reported satisfactory adoption of the caregiver role. Caregivers who presented basic or insufficient role adoption levels tended to have higher scores for anxiety, depression and loneliness. Conclusion: adoption of the caregiver role is a mediator in the anxiety, depression and loneliness levels among caregivers. Strategies aimed at supporting caregivers should include training for the caregiver role to mitigate the negative impacts of anxiety, depression and loneliness.

Objetivo: describir y explorar la relación de la soledad, la ansiedad y la depresión con la adopción del rol de cuidador entre personas que se ocupan de cuidar pacientes con enfermedades crónicas en Colombia. Métodos: se trató de un estudio exploratorio y transversal con la participación de 960 cuidadores principales de personas con enfermedades crónicas. Aplicamos la Escala de Adopción del Rol de Cuidador, la Escala de Soledad de la Universidad de California de Los Ángeles y la Escala de Ansiedad y Depresión. Se realizaron análisis de componentes principales y de correspondencia múltiple para el clustering . Resultados: el 40,8% de los cuidadores que participaron en el estudio informó padecer depresión, el 59% informó ansiedad, el 54,6% indicó soledad de moderada a grave y el 88,6% presentó adopción satisfactoria del rol de cuidador. Los cuidadores que presentaron los niveles básico o insuficiente en términos de adopción del rol tendieron a obtener puntuaciones de ansiedad, depresión y soledad más elevadas. Conclusión: adoptar el rol de cuidador es un mediador de los niveles de ansiedad, depresión y soledad entre los cuidadores. Las estrategias dirigidas a apoyar a los cuidadores deberían incluir preparación para dicho rol a fin de mitigar los efectos negativos de la ansiedad, la depresión y la soledad.

Objetivo: descrever e explorar a relação entre a solidão, a ansiedade e a depressão com a adoção do papel de cuidador entre os indivíduos que cuidam de pessoas com doenças crônicas na Colômbia. Método: trata-se de um estudo exploratório e transversal que envolveu 960 cuidadores primários de indivíduos com doenças crônicas. Foi aplicada a Escala de Adoção do Papel de Cuidador, a Escala de Solidão da Universidade da Califórnia em Los Angeles e a Escala de Ansiedade e Depressão. Foram realizadas análises de componentes principais e de correspondência múltipla para o agrupamento. Resultados: entre os cuidadores participantes, 40,8% relataram ter depressão, 59% relataram ansiedade, 54,6% relataram solidão moderada a grave e 88,6% relataram uma adoção satisfatória do papel de cuidador. Os cuidadores que apresentaram níveis básicos ou insuficientes de adoção do papel tenderam a ter pontuações mais elevadas de ansiedade, depressão e solidão. Conclusão: a adoção do papel de cuidador é um mediador nos níveis de ansiedade, depressão e solidão entre os cuidadores. As estratégias destinadas a apoiar os cuidadores devem incluir o treinamento para o papel de cuidador, a fim de atenuar os impactos negativos da ansiedade, da depressão e da solidão.

Percutaneous Coronary Intervention in Men, Women, and Minorities With a Previous Coronary Artery Bypass Graft Surgery (from the Pooled PLATINUM Diversity and PROMUS Element Plus Registries).

There is limited data on new-generation stent outcomes in patients with previous coronary artery bypass graft (CABG) and the associated risk of gender and race/ethnicity is unclear. We investigated 1-year outcomes after platinum chromium everolimus-eluting stent implantation in a diverse population of men, women, and minorities with previous CABG pooled from the PLATINUM Diversity (NCT02240810) and PROMUS Element Plus (NCT01589978) registries. Our primary outcome was major adverse cardiac events (MACE), a composite of all-cause death, myocardial infarction (MI), and target vessel revascularization (TVR) at 1-year post percutaneous coronary intervention (PCI). Secondary end points included all-cause death, MI, TVR, target vessel failure, and stent thrombosis. A total of 4,175 patients were included in the analysis, including 1,858 women (44.5%), 1,057 minorities (25.3%), and 662 (15.9%) with previous CABG. Patients with previous CABG were older, included more men and White patients, and had more co-morbidities compared with patients without previous CABG. At 1 year, patients with previous CABG had a higher risk of MACE (12.6% vs 7.5%, hazard ratio 1.70, 95% confidence interval 1.32 to 2.19, p <0.001) and end points, including death/MI, TVR, and target vessel failure. After multivariate adjustment, no differences were observed in MACE (adjusted hazard ratio 1.11, 95% confidence interval 0.82 to 1.49, p = 0.506) or any secondary end points. No interaction was observed between previous CABG and gender or minority status. In conclusion, in a contemporary PCI population, patients with previous CABG remain at high risk for PCI because of their elevated risk profile. Previous CABG status was however not independently associated with worse outcomes after adjustment, nor was any interaction observed with gender or race/ethnicity.

ASO silencing of a glycosyltransferase, Poglut1 , improves the liver phenotypes in mouse models of Alagille syndrome.

BACKGROUND AND AIMS: Paucity of intrahepatic bile ducts (BDs) is caused by various etiologies and often leads to cholestatic liver disease. For example, in patients with Alagille syndrome (ALGS), which is a genetic disease primarily caused by mutations in jagged 1 ( JAG1) , BD paucity often results in severe cholestasis and liver damage. However, no mechanism-based therapy exists to restore the biliary system in ALGS or other diseases associated with BD paucity. Based on previous genetic observations, we investigated whether postnatal knockdown of the glycosyltransferase gene protein O -glucosyltransferase 1 ( Poglut1) can improve the ALGS liver phenotypes in several mouse models generated by removing one copy of Jag1 in the germline with or without reducing the gene dosage of sex-determining region Y-box 9 in the liver. APPROACH AND RESULTS: Using an ASO established in this study, we show that reducing Poglut1 levels in postnatal livers of ALGS mouse models with moderate to profound biliary abnormalities can significantly improve BD development and biliary tree formation. Importantly, ASO injections prevent liver damage in these models without adverse effects. Furthermore, ASO-mediated Poglut1 knockdown improves biliary tree formation in a different mouse model with no Jag1 mutations. Cell-based signaling assays indicate that reducing POGLUT1 levels or mutating POGLUT1 modification sites on JAG1 increases JAG1 protein level and JAG1-mediated signaling, suggesting a likely mechanism for the observed in vivo rescue. CONCLUSIONS: Our preclinical studies establish ASO-mediated POGLUT1 knockdown as a potential therapeutic strategy for ALGS liver disease and possibly other diseases associated with BD paucity.

A Case of COL1A1-PDGFB Fusion Uterine Sarcoma.

COL1A1-PDGFB gene fusion uterine sarcoma is a recently described entity which shows some overlapping features with dermatofibrosarcoma protuberans. To date, only 4 cases have been reported in the literature. Due to its rarity, succinct clinicopathologic characteristics are yet to be established. We report a fifth case initially mistaken as a uterine fibroid which histologically proved to be a CD34 + high-grade spindle cell proliferation which on fluorescence in situ hybridization analysis displayed COL1A1-PDGFB gene rearrangement. With this case description we hope to raise awareness and aid in the characterization of this emerging entity.

Gene amplification mutations originate prior to selective stress in Acinetobacter baylyi.

The controversial theory of adaptive amplification states gene amplification mutations are induced by selective environments where they are enriched due to the stress caused by growth restriction on unadapted cells. We tested this theory with three independent assays using an Acinetobacter baylyi model system that exclusively selects for cat gene amplification mutants. Our results demonstrate all cat gene amplification mutant colonies arise through a multistep process. While the late steps occur during selection exposure, these mutants derive from low-level amplification mutant cells that form before growth-inhibiting selection is imposed. During selection, these partial mutants undergo multiple secondary steps generating higher amplification over several days to multiple weeks to eventually form visible high-copy amplification colonies. Based on these findings, amplification in this Acinetobacter system can be explained by a natural selection process that does not require a stress response. These findings have fundamental implications to understanding the role of growth-limiting selective environments on cancer development. We suggest duplication mutations encompassing growth factor genes may serve as new genomic biomarkers to facilitate early cancer detection and treatment, before high-copy amplification is attained.

A comparative study of the expression of cyclin D1, COX-2, and KI-67 in odontogenic keratocyst vs. ameloblastoma vs. orthokeratinized odontogenic cyst.

BACKGROUND: Odontogenic keratocysts (OKCs) and orthokeratinized odontogenic Cysts (OOCs) are distinct clinicopathological entities. OKC appears to behave in a way more similar to that of a neoplasm, such as ameloblastoma (AB). The aim of this study is to compare the influence of Ki-67, Cyclin D1 and COX-2 in the diagnosis and pathogenesis of OKC, OOC and AB. MATERIALS AND METHODS: A cross-sectional observational study of 41 samples was organized into 3 groups: (1) OKC n=22; (2) AB n=13 and (3) OOC n=6. Paraffin blocks were sectioned and stained with hematoxylin and eosin (H&E). Immunohistochemical study using Bond Polymer Refine Red Detection Kit, Leica, Wetzlar, Germany, was performed for the following antibodies: Ki-67, Cyclin D1 and COX-2. Double blind immunostaining was quantified subjectively. Staining: nuclear or cytoplasmic; nuclear (Ki-67 and Cyclin D1>5% positive) and cytoplasmic (COX-2; 1; 1-30 cytoplasm: 2; 31-60 cytoplasm; 3; 61-100 cytoplasm). Considering positive stained 61-100 cytoplasms. RESULTS: The expression of Ki-67 was higher in the OKC group than in the AB group (p<0.05). Cyclin D1 showed a higher expression in OKC vs. OOC and OKC vs. AB (p<0.05). Finally, expression of COX-2 was higher in OKC vs AB (p<0.05). CONCLUSIONS: COX-2, Ki-67 and Cyclin D1 show statistically significant differences between the groups, suggesting that they could be useful tools in the differential diagnosis between OKCs and OOC and a predictive indicator for their biologic behaviour. The higher expressions of these 3 markers of OKC vs AB highlight once more the aggressive behaviour of this now re-considered cystic lesion. These markers could prove useful in the choice of more aggressive surgical treatment in OKCs as their behaviour appears to be similar to that of a neoplasm.

Sarcoma de Kaposi en diagnóstico tardío de VIH/sida / Kaposi sarcoma in late HIV/AIDS diagnosis

Introducción: El sarcoma de Kaposi es una neoplasia maligna multifocal de células endoteliales, que se presenta con lesiones características en la piel, boca y ganglios linfáticos. Objetivo: Describir un caso de sarcoma de Kaposi que, por sus características, entorpeció el diagnóstico de infección por VIH. Presentación del caso: Paciente masculino, de 30 años, diagnosticado recientemente con síndrome de inmunodeficiencia adquirida, sin tratamiento. Fue referido a la consulta de cirugía maxilofacial para biopsia de adenopatía cervical derecha. Durante el examen físico se observó edema generalizado en ambos miembros inferiores, con lesiones hiperpigmentadas de aspecto macular y papular de varias tonalidades. En la mucosa del paladar duro se apreció una lesión pigmentada violácea, que abarcaba la línea media palatina y se extendía hacia la hemiarcada izquierda. Se realizó la exégesis de la adenopatía con fines diagnósticos, con lo cual se confirmó sarcoma de Kaposi. Conclusiones: La falta de familiaridad con las características clínicas, así como la falta de una biopsia de las lesiones cutánea y un examen completo de la cavidad oral, ocasionaron que esta neoplasia pasara desapercibida en los exámenes médicos de rutina en el caso presentado, lo que condujo a un bajo índice de sospecha de la infección por VIH/sida y retrasó el tratamiento oportuno. Cuando la inmunosupresión está avanzada, el sarcoma de Kaposi relacionado al síndrome de inmunodeficiencia adquirida tiende a ser más agresivo(AU)

Introduction: Kaposi sarcoma is a multifocal malignant neoplasm of endothelial cells which presents with characteristic lesions on the skin, mouth and lymph glands. Objective: Describe a case of Kaposi sarcoma with characteristics that hindered HIV infection diagnosis. Case presentation: A case is presented of a male 30-year-old patient recently diagnosed with acquired immunodeficiency syndrome, and not following any treatment. The patient was referred to the maxillofacial surgery service for right cervical adenopathy biopsy. Physical examination revealed generalized edema in both lower limbs, with hyperpigmented lesions of macular and papular appearance and various shades of color. A purplish pigmented lesion was detected in the hard palate mucosa. The lesion covered the palatal midline and extended toward the left hemiarch. Exeresis of the adenopathy was performed for diagnostic purposes, confirming the diagnosis of Kaposi sarcoma. Conclusions: Lack of familiarity with the clinical characteristics of Kaposi sarcoma, and not performing a biopsy of the skin lesions and a complete examination of the oral cavity, made the neoplasm go unnoticed to routine medical tests, leading to low suspicion of HIV/AIDS infection and delaying timely treatment. In advanced immunosuppression, Kaposi sarcoma related to acquired immunodeficiency syndrome tends to be more aggressive(AU)

Hyperoxemia in postsurgical sepsis/septic shock patients is associated with reduced mortality.

BACKGROUND: Despite growing interest in treatment strategies that limit oxygen exposure in ICU patients, no studies have compared conservative oxygen with standard oxygen in postsurgical patients with sepsis/septic shock, although there are indications that it may improve outcomes. It has been proven that high partial pressure of oxygen in arterial blood (PaO2) reduces the rate of surgical-wound infections and mortality in patients under major surgery. The aim of this study is to examine whether PaO2 is associated with risk of death in adult patients with sepsis/septic shock after major surgery. METHODS: We performed a secondary analysis of a prospective observational study in 454 patients who underwent major surgery admitted into a single ICU. Patients were stratified in two groups whether they had hyperoxemia, defined as PaO2 > 100 mmHg (n = 216), or PaO2 ≤ 100 mmHg (n = 238) at the day of sepsis/septic shock onset according to SEPSIS-3 criteria maintained during 48 h. Primary end-point was 90-day mortality after diagnosis of sepsis. Secondary endpoints were ICU length of stay and time to extubation. RESULTS: In patients with PaO2 ≤ 100 mmHg, we found prolonged mechanical ventilation (2 [8] vs. 1 [4] days, p < 0.001), higher ICU stay (8 [13] vs. 5 [9] days, p < 0.001), higher organ dysfunction as assessed by SOFA score (9 [3] vs. 7 [5], p < 0.001), higher prevalence of septic shock (200/238, 84.0% vs 145/216) 67.1%, p < 0.001), and higher 90-day mortality (37.0% [88] vs. 25.5% [55], p = 0.008). Hyperoxemia was associated with higher probability of 90-day survival in a multivariate analysis (OR 0.61, 95%CI: 0.39-0.95, p = 0.029), independent of age, chronic renal failure, procalcitonin levels, and APACHE II score > 19. These findings were confirmed when patients with severe hypoxemia at the time of study inclusion were excluded. CONCLUSIONS: Oxygenation with a PaO2 above 100 mmHg was independently associated with lower 90-day mortality, shorter ICU stay and intubation time in critically ill postsurgical sepsis/septic shock patients. Our findings open a new venue for designing clinical trials to evaluate the boundaries of PaO2 in postsurgical patients with severe infections.

Pancreatic metastases from renal cell carcinoma. Postoperative outcome after surgical treatment in a Spanish multicenter study (PANMEKID).

BACKGROUND: Renal Cell Carcinoma (RCC) occasionally spreads to the pancreas. The purpose of our study is to evaluate the short and long-term results of a multicenter series in order to determine the effect of surgical treatment on the prognosis of these patients. METHODS: Multicenter retrospective study of patients undergoing surgery for RCC pancreatic metastases, from January 2010 to May 2020. Variables related to the primary tumor, demographics, clinical characteristics of metastasis, location in the pancreas, type of pancreatic resection performed and data on short and long-term evolution after pancreatic resection were collected. RESULTS: The study included 116 patients. The mean time between nephrectomy and pancreatic metastases' resection was 87.35 months (ICR: 1.51-332.55). Distal pancreatectomy was the most performed technique employed (50 %). Postoperative morbidity was observed in 60.9 % of cases (Clavien-Dindo greater than IIIa in 14 %). The median follow-up time was 43 months (13-78). Overall survival (OS) rates at 1, 3, and 5 years were 96 %, 88 %, and 83 %, respectively. The disease-free survival (DFS) rate at 1, 3, and 5 years was 73 %, 49 %, and 35 %, respectively. Significant prognostic factors of relapse were a disease free interval of less than 10 years (2.05 [1.13-3.72], p 0.02) and a history of previous extrapancreatic metastasis (2.44 [1.22-4.86], p 0.01). CONCLUSIONS: Pancreatic resection if metastatic RCC is found in the pancreas is warranted to achieve higher overall survival and disease-free survival, even if extrapancreatic metastases were previously removed. The existence of intrapancreatic multifocal compromise does not always warrant the performance of a total pancreatectomy in order to improve survival.

CEACAM7 polymorphisms predict genetic predisposition to mortality in post-surgical septic shock patients.

We carried out a retrospective exploratory study on 173 patients who underwent major surgery and developed septic shock after surgery. Our findings suggest that CEACAM7 rs1001578, rs10409040, and rs889365 polymorphisms could influence septic shock-related death in individuals who underwent major surgery.

Perinatal mesenchymal stromal cells of the human decidua restore continence in rats with stress urinary incontinence induced by simulated birth trauma and regulate senescence of fibroblasts from women with stress urinary incontinence.

Stress urinary incontinence (SUI) is a condition that causes the involuntary loss of urine when making small efforts, which seriously affects daily life of people who suffer from it. Women are more affected by this form of incontinence than men, since parity is the main risk factor. Weakening of the pelvic floor tissues is the cause of SUI, although a complete understanding of the cellular and molecular mechanisms of the pathology is still lacking. Reconstructive surgery to strengthen tissue in SUI patients is often associated with complications and/or is ineffective. Mesenchymal stromal cells from the maternal side of the placenta, i.e. the decidua, are proposed here as a therapeutic alternative based on the regenerative potential of mesenchymal cells. The animal model of SUI due to vaginal distention simulating labor has been used, and decidual mesenchymal stromal cell (DMSC) transplantation was effective in preventing a drop in pressure at the leak point in treated animals. Histological analysis of the urethras from DMSC-treated animals after VD showed recovery of the muscle fiber integrity, low or no extracellular matrix (ECM) infiltration and larger elastic fibers near the external urethral sphincter, compared to control animals. Cells isolated from the suburethral connective tissue of SUI patients were characterized as myofibroblasts, based on the expression of several specific genes and proteins, and were shown to achieve premature replicative senescence. Co-culture of SUI myofibroblasts with DMSC via transwell revealed a paracrine interaction between the cells through signals that mediated DMSC migration, SUI myofibroblast proliferation, and modulation of the proinflammatory and ECM-degrading milieu that is characteristic of senescence. In conclusion, DMSC could be an alternative therapeutic option for SUI by counteracting the effects of senescence in damaged pelvic tissue.

Necrotizing fasciitis as a complication of late anastomotic leak after anterior resection for rectal cancer.

BACKGROUND: Anastomotic leak is a serious complication of rectal cancer surgery that leads to increased morbidity and mortality. Its incidence is 3-21%, usually appearing 5-7 days after surgery, although there are cases of late presentation as chronic anastomotic fistulas or sinuses. CASE REPORT: We present three cases of patients who underwent anterior resection for rectal cancer and developed necrotizing fasciitis due to late anastomotic leaks. CONCLUSIONS: We believe that early and resolutive surgical treatment is recommended for chronic anastomotic fistulas or sinuses, even when asymptomatic, because of the associated risk of necrotizing fasciitis.

ANTECEDENTES: La dehiscencia anastomótica es una complicación grave de la cirugía del cáncer de recto que conlleva un aumento de la morbimortalidad. Su incidencia se sitúa en un 3-21%, manifestándose habitualmente alrededor del quinto a séptimo días de posoperatorio, si bien existen casos de presentación tardía en forma de fístulas o sinus anastomóticos crónicos. CASOS CLÍNICOS: Presentamos tres casos de pacientes intervenidos mediante resección anterior por cáncer de recto que desarrollaron fascitis necrotizante secundaria a dehiscencia anastomótica tardía. CONCLUSIONES: Creemos recomendable el tratamiento quirúrgico resolutivo y precoz de las fístulas y sinus anastomóticos crónicos, incluso asintomáticos, por el potencial riesgo de fascitis necrotizante que suponen.

Tumor tritón maligno en región mandibular y cervical / Malignant triton tumor in the mandibular and cervical region

Introducción: El tumor tritón maligno es una neoplasia rara en la que se encuentran células rabdomioblásticas en un tumor maligno de la vaina de nervios periféricos, que se caracteriza por su agresividad y mal pronóstico. La localización en la cabeza y el cuello es poco frecuente. La inmunohistoquímica juega un papel importante en el diagnóstico. Objetivo: Describir un tumor tritón maligno de tamaño inusual. Presentación del caso: Paciente femenino, de 16 años, es referida al servicio de cirugía maxilofacial del Instituto Nacional de Pediatría, Ciudad de México, con un diagnóstico de tumor neuroectodérmico en región facial y cervical de un año de evolución. Clínicamente el tumor era exofítico, multilobulado, con zonas extensas de necrosis, superficie de varias tonalidades y un tamaño aproximado de 18 x 10 x 12 cm. Se realizó una biopsia e inmunohistoquímica que confirmó el diagnóstico de tumor tritón maligno. La paciente fue intervenida quirúrgicamente, procedimiento con el cual se eliminó totalmente la lesión, con márgenes de seguridad. La paciente presentó una evolución tórpida, con desenlace fatal al cabo de seis meses del tratamiento. Conclusiones: El tumor tritón es una neoplasia agresiva y su detección oportuna orienta al cirujano a ofrecer al paciente un tratamiento adecuado(AU)

Introduction: Malignant triton tumor is a rare neoplasm in which rhabdomyoblasts are present in a malignant tumor of the peripheral nerve sheath. This condition is characterized by its aggressiveness and bad prognosis. Location in the head and neck is infrequent. Immunohistochemical testing plays an important role in its diagnosis. Objective: Describe an unusually large malignant triton tumor. Case presentation: A case is presented of a female 16-year-old patient referred to the maxillofacial surgery service of the National Institute of Pediatrics in Mexico City with a diagnosis of neuroectodermal tumor of one year's evolution in the facial and cervical region. In clinical terms, the tumor was exophytic, multilobed, with extensive areas of necrosis, a surface in several shades of color and an approximate size of 18 x 10 x 12 cm. Biopsy and immunohistochemical testing confirmed the diagnosis of malignant triton tumor. The patient underwent surgery in which the lesion was totally excised with a safety margin. Evolution was clumsy, with a fatal outcome at six months of treatment. Conclusions: Triton tumor is an aggressive neoplasm whose early detection makes it possible for surgeons to provide an appropriate treatment(AU)

Elective laparoscopic sigmoidectomy with preservation of the superior rectal artery prior to endoscopic decompression in sigmoid volvulus

Sigmoid volvulus is a frequent cause of intestinal obstruction. Its management has evolved with the use of laparoscopic surgery, achieving an elective sigmoid resection with anastomosis after a flexible endoscopic detorsion. A female patient was admitted to the emergency room with abdominal pain, distention, and constipation. The abdominal computed tomography showed a whirled sigmoid mesentery in addition to dilated sigmoid loops, and coffee bean sign. The patient successfully underwent a flexible endoscopic detorsion and was scheduled for elective sigmoid colectomy with rectal superior artery preservation and primary anastomosis. During the sigmoid resection, the superior rectal artery preservation is related to a better prognostic, with less bleeding, anastomotic leakage, and hospital stay. Currently, there are few reports of the laparoscopic preservation of the superior rectal artery in patients with sigmoid volvulus. (AU)

CONTENIDO DE POLIFENOLES, CAPACIDAD ANTIOXIDANTE Y TOXICIDAD DE Solanum ferrugineum (SOLANACEAE) CON POTENCIAL MEDICINAL / Polyphenol content, antioxidant capacity and toxicity of Solanum ferrugineum (Solanaceae) with medicinal potential

RESUMEN Solanum ferruginium es una planta que crece en lugares perturbados como maleza, es de uso medicinal poco utilizada que presenta un gran potencial como fuente de antioxidantes debido a su alto contenido en polifenoles. Debido a esto se analizó el contenido de polifenoles, flavonoides, proantocianidinas y capacidad antioxidante in vitro (ensayo de captación de radicales DPPH) en hojas, tallos y planta completa de tres localidades (Las agujas, Parque el Nabo y Bosque la Primavera) de Zapopan, Jalisco, así como su toxicidad subcronica en hojas. En general se observó diferencia significativa (p≤ 0,05), en las muestras de las tres localidades, las hojas presentaron el mayor contenido de polifenoles (15,3±0,7 a 22±0,4 mg expresado como equivalente de ácido gálico (EAG/g) en muestras de Parque el Nabo, flavonoides (7,8±0,3 a 13,3±0,3 mg EC/g) y proantocianidinas (3,4±0,1 a 4,2±0,05 mg expresado como equivalente de catequina (EC/g) en el Bosque la Primavera. La capacidad antioxidante fue similar en todas las muestras, con valores de 8,3 a 17 μg/mL de concentración media inhibitora (CI50). En la prueba toxicológica, los ratones no mostraron signos de toxicidad a ninguna dosis por efecto de la administración de la planta en estudio, por lo que la dosis letal media (DL50) es > 15 000 mg/kg de peso corporal. El contenido de polifenoles y actividad antioxidante en S. ferruginium sobre todo en hojas indican un alto potencial con propiedades farmacológicas además de su inocuidad, por lo que es importante realizar estudios de sus compuestos fenólicos individuales, antes de ser utilizada en farmacología.

ABSTRACT Solanum ferrugineum is a plant that grows like a weed. It is a new medicinal plant with great potential as an antioxidant source due to its high polyphenol content. Because of this, polyphenol, flavonoid, proanthocyanidin, and antioxidant capacity in vitro (radical scavenging test by DPPH) were analyzed in leaves, stems, and whole plants from three localities (Las agujas, Nabo Park, and La Primavera Forest) as well as the subchronic toxicity evaluation in leaves. In general, there was a significant difference (p≤ 0.05) in all samples from the three localities. The leaves showed the highest polyphenol content (15.3±0.7 to 22±0.4 mg AGE/g) in samples from the Nabo Park, flavonoid (7.8±0.3 to 13.3±0,3 mg CE/g) and proanthocyanidins (3.4±0.1 to 4.2±0.05 mg CE/g) in La Primavera Forest. Antioxidant capacity was similar across all samples, showing values of 8.3 to 17 μg/mL of IC50. During the toxicology assay, animal specimens showed no signs of toxicity to the doses resulting from the administration of the plant under study so that LD50 > 15 000 mg/kg Bodyweight. The polyphenol content and antioxidant capacity obtained from S. ferruginium leaves, together with its safety, indicate a high pharmacological potential of this plant. Therefore, it is important to carry out studies of its phenolic compounds before being used in pharmacology.

Implementation barriers for Enhanced Recovery After Surgery (ERAS) in rectal cancer surgery: a comparative analysis of compliance with colon cancer surgeries.

We aim to analyze differences in compliance between colon and rectal cancer surgeries under Enhanced Recovery After Surgery (ERAS) for colorectal procedures, and to detect implementation barriers for rectal cancer surgeries. Patients who underwent elective rectal cancer surgeries under ERAS were case-matched based on gender, age, and P-POSSUM with an equal number of patients who underwent colonic surgeries. Achievements of ≥ 70% of ERAS items were considered an acceptable level of compliance. A multivariate analysis was carried out to identify independent risk factors for lower compliance. A total of 434 patients were included over a 5-year period. After matching, there were 111 patients in each group. Overall compliance was significantly lower in the rectal surgery group (73% vs 82%, p = 0.001). A good compliance rate differed from 55% in rectal vs 77.5% in colonic procedures (p = 0.000). We identified three independent risk factors for lower compliance rates: open surgical approach, the use of epidural catheter, and the presence of postoperative ileus. Our data showed that rectal cancer surgeries are more exigent to success on ERAS interventions when compared to colonic resections. There is a need to introduce specific modifications on the protocols for colorectal surgeries when applied to these particular procedures.

Distinguishing septic shock from non-septic shock in postsurgical patients using gene expression.

OBJECTIVES: To obtain a gene expression signature to distinguish between septic shock and non-septic shock in postoperative patients, since patients with both conditions show similar signs and symptoms. METHODS: Differentially expressed genes were selected by microarray analysis in the discovery cohort. These genes were evaluated by quantitative real time polymerase chain reactions in the validation cohort to determine their reliability and predictive capacity by receiver operating characteristic curve analysis. RESULTS: Differentially expressed genes selected were IGHG1, IL1R2, LCN2, LTF, MMP8, and OLFM4. The multivariate regression model for gene expression presented an area under the curve value of 0.922. These genes were able to discern between both shock conditions better than other biomarkers used for diagnosis of these conditions, such as procalcitonin (0.589), C-reactive protein (0.705), or neutrophils (0.605). CONCLUSIONS: Gene expression patterns provided a robust tool to distinguish septic shock from non-septic shock postsurgical patients and shows the potential to provide an immediate and specific treatment, avoiding the unnecessary use of broad-spectrum antibiotics and the development of antimicrobial resistance, secondary infections and increase health care costs.