Tumor microenvironment and immune system preservation in early-stage breast cancer: routes for early recurrence after mastectomy and treatment for lobular and ductal forms of disease.

BACKGROUND: Intra-ductal cancer (IDC) is the most common type of breast cancer, with intra-lobular cancer (ILC) coming in second. Surgery is the primary treatment for early stage breast cancer. There are now irrefutable data demonstrating that the immune context of breast tumors can influence growth and metastasis. Adjuvant chemotherapy may be administered in patients who are at a high risk of recurrence. Our goal was to identify the processes underlying both types of early local recurrences. METHODS: This was a case-control observational study. Within 2 years of receiving adjuvant taxan and anthracycline-based chemotherapy, as well as modified radical mastectomy (MRM), early stage IDC and ILC recurred. Vimentin, α-smooth muscle actin (SMA), platelet-derived growth factor (PDGF), matrix metalloproteinase (MMP1), and clustered differentiation (CD95) were investigated. RESULTS: Of the samples in the ductal type group, 25 showed local recurrence, and 25 did not. Six individuals in the lobular-type group did not experience recurrence, whereas seven did. Vimentin (p = 0.000 and 0.021), PDGF (p = 0.000 and 0.002), and CD95 (p = 0.000 and 0.045) expressions were significantly different in ductal and lobular carcinoma types, respectively. Measurement of ductal type was the sole significant difference found in MMP1 (p = 0.000) and α-SMA (p = 0.000). α-SMA and CD95 were two variables that helped the recurrence mechanism in the ductal type according to the pathway analysis. In contrast, the CD95 route is a recurrent mechanism for the lobular form. CONCLUSIONS: While the immune system plays a larger role in ILC, the tumor microenvironment and immune system both influence the recurrence of IDC. According to this study, improving the immune system may be a viable cancer treatment option.

Revitalize splenic functions. Following a splenectomy for trauma, a small amount of splenic autotransplantation was performed.

INTRODUCTION: The spleen is a responsible significant part of the immune system; after Splenectomy following trauma, the immune system changes; splenic autotransplantation can preserve the immune system after trauma and Splenectomy. BACKGROUND: Patients can be protected from immune dysfunction by autotransplanting splenic tissues after splenectomy following trauma because their immune systems and spleens are changed. Patients can gain their immune function after splenic autotransplantation. METHODS: Patient classification methods are into three categories, Group A, 6 cases with auto-translation; Group B, 6 cases without transplantation; Group C, seven regular people serving as the control. AIM OF WORK: The aim of the work is not to compare outcome methods or compare types of autotransplantation; This work aims to document postoperative radiological, immunological, clinical, and hematological investigations. We concentrated on the results of investigations more than the types of operation or approach or types of autotransplantation. RESULTS: We showed that, after comparing each group with normal individuals subjects, patients who did not undergo autotransplantation had significantly higher platelet counts, a more significant percentage of micronucleated reticulocytes, increased levels of naive B lymphocytes, changes in class-switched memory and class-unswitched memory B cells, and higher levels of PD1 on CD8 + T lymphocytes. Nevertheless, neither splenic autotransplant patients nor the average general population showed any appreciable variations in any of the parameters. CONCLUSIONS: Spleen's activities with adequate hemocatheter activity and recovery of the immunological deficit after splenic autotransplantation.

Circulating Cell Free Nuclear DNA, Mitochondrial DNA and Global DNA Methylation: Potential Noninvasive Biomarkers for Breast Cancer Diagnosis.

Eighty seven women with benign breast lesion, 120 patients with breast cancer (BC) and one hundred controls were included in the study. Quantification of mtDNA and nDNA was done by qPCR. Global DNA methylation was measured using ELISA. Circulating cell-free nDNA and mtDNA were significantly elevated in BC and benign breast lesions patients. Global methylation was significantly low in BC patients. Combining the studied parameters in one panel, nDNA/mtDNA/hypomethylation, improved their sensitivity in detecting BC to reach 92.5%. Circulating cell-free nDNA, mtDNA and global DNA hypomethylation can be used as diagnostic and prognostic markers for BC.

Post-extubation continuous positive airway pressure improves oxygenation after pediatric laparoscopic surgery: A randomized controlled trial.

BACKGROUND: Effects of intraoperative recruitment maneuvers (RMs) on oxygenation and pulmonary compliance are lost during recovery if high inspired oxygen and airway suctioning are used. We investigated the effect of post-extubation noninvasive CPAP mask application on the alveolar arterial oxygen difference [(A-a) DO2 ] after pediatric laparoscopic surgery. METHODS: Sixty patients (1-6 years) were randomly allocated to three groups of 20 patients, to receive zero end-expiratory pressure (ZEEP group), RM with decremental PEEP titration only (RM group), or followed with post-extubation CPAP for 5 minutes (RM-CPAP group). Primary outcome was [(A-a) DO2 ] at 1 hour postoperatively. Secondary outcomes were respiratory mechanics, arterial blood gas analysis, hemodynamics, and adverse events. RESULTS: At 1 hour postoperatively, mean [(A-a) DO2 ] (mm Hg) was lower in the RM-CPAP group (41.5 ± 13.2, [95% CI 37.6-45.8]) compared to (80.2 ± 13.7 [72.6-87.5], P < 0.0001] and (59.2 ± 14.6, [54.8-62.6], P < 0.001) in the ZEEP and RM groups. The mean PaO2 (mm Hg) at 1 hour postoperatively was higher in the RM-CPAP group (156.2 ± 18.3 [95% CI 147.6-164.7]) compared with the ZEEP (95.9 ± 15.9 [88.5-103.3], P < 0.0001) and RM groups (129.1 ± 15.9 [121.6-136.5], P < 0.0001). At 12 hours postoperatively, mean [(A-a) DO2 ] and PaO2 were (9.6 ± 2.1 [8.4-10.8]) and (91.9 ± 9.4 [87.5-96.3]) in the RM-CPAP group compared to (25.8 ± 5.5 [23.6-27.6]) and (69.9 ± 5.5 [67.4-72.5], P < 0.0001) in the ZEEP group and (34.3 ± 13.2, [28.4-40.2], P < 0.0001) and (74.03 ± 9.8 [69.5-78.6], P < 0.0001) in the RM group. No significant differences of perioperative adverse effects were found between groups. CONCLUSIONS: An RM done after pneumoperitoneum inflation followed by decremental PEEP titration improved oxygenation at 1 hour postoperatively. The addition of an early post-extubation noninvasive CPAP mask ventilation improved oxygenation at 12 hours postoperatively.

Fatal pulmonary embolism following injectable gluteal filler usage: a case report.

BACKGROUND: Despite the fact that injectable filler usage in the gluteal region has not been recommended in formal medical institutions, illegal procedures are performed in many clinics and beauty centers across Egypt. This case report illustrates the illegal practice culminating in a fatal complication. CASE PRESENTATION: A 26-year-old female with no relevant medical history presented to the ER with acute onset shortness of breath. The complaint started 16 h before, with a rapidly progressive course, shortly after undergoing a gluteal filler injection at a center in Cairo. At ER, the patient was severely distressed, yet fully conscious and oriented. She was shocked (BP 70/40 mmHg), tachycardic (130 BPM), and tachypneic (30/min) with normal temperature. She had congested pulsating neck veins with positive Kussmaul sign. Chest auscultation revealed normal vesicular breathing with equal air entry and no adventitious sounds. Her O2 saturation was 60% on room air that improved to 85% on O2 mask. ECG showed sinus tachycardia. Echocardiography showed dilated right side, D-shaped septum with systolic flattening, dilated IVC, mild tricuspid regurgitation and estimated RV systolic pressure 53 mmHg. Her ABG showed compensated metabolic acidosis with elevated lactate level. At the ICU, CVP was 18 mmHg. Saline infusion was continued along with noradrenaline infusion initiation. A provisional diagnosis of high-risk pulmonary embolism was made, though CT pulmonary angiography was not available. Accordingly, thrombolytic therapy was initiated with alteplase (100 mg) over 2 h. Also, a dose of pulse steroids (methylprednisolone 200 mg) was given. Chest X-ray showed bilateral heterogenous opacity and ABG showed deteriorating hypoxia and combined metabolic and respiratory acidosis. The patient was intubated upon deterioration of conscious level and was put on mechanical ventilation. Her ET tube showed frequent blood-tinged secretions. Echocardiography showed more right-side dilatation that was consistent with deterioration of clinical status. Three hours after admission the patient developed cardiac arrest and died 2 h later. CONCLUSIONS: This case report highlights the dangers associated with injectable filler usage in the gluteal region. Physicians and patients should be aware of the possible complications and how to avoid it.

Driver mutations in TP53 are ubiquitous in high grade serous carcinoma of the ovary.

Numerous studies have tested the association between TP53 mutations in ovarian cancer and prognosis but these have been consistently confounded by limitations in study design, methodology, and/or heterogeneity in the sample cohort. High-grade serous (HGS) carcinoma is the most clinically important histological subtype of ovarian cancer. As these tumours may arise from the ovary, Fallopian tube or peritoneum, they are collectively referred to as high-grade pelvic serous carcinoma (HGPSC). To identify the true prevalence of TP53 mutations in HGPSC, we sequenced exons 2-11 and intron-exon boundaries in tumour DNA from 145 patients. HGPSC cases were defined as having histological grade 2 or 3 and FIGO stage III or IV. Surprisingly, pathogenic TP53 mutations were identified in 96.7% (n = 119/123) of HGPSC cases. Molecular and pathological review of mutation-negative cases showed evidence of p53 dysfunction associated with copy number gain of MDM2 or MDM4, or indicated the exclusion of samples as being low-grade serous tumours or carcinoma of uncertain primary site. Overall, p53 dysfunction rate approached 100% of confirmed HGPSCs. No association between TP53 mutation and progression-free or overall survival was found. From this first comprehensive mapping of TP53 mutation rate in a homogeneous group of HGPSC patients, we conclude that mutant TP53 is a driver mutation in the pathogenesis of HGPSC cancers. Because TP53 mutation is almost invariably present in HGPSC, it is not of substantial prognostic or predictive significance.

Association of Helicobacter pylori infection with coronary artery disease: is it an independent risk factor?

BACKGROUND: Coronary artery disease (CAD) is a dilemma and a serious cause of morbidity and mortality worldwide. Since CAD has been seen in people without the conventional risk factors like smoking, diabetes, and hypertension, the infectious theory being a risk factor has arisen. MAIN BODY: Helicobacter pylori (HP) infection is the most common infection affecting the vast majority of the population worldwide. HP grows in the gastrointestinal tract (GIT) and responsible for chronic gastritis, peptic ulcer, gastric adenocarcinoma, and gastric lymphoma. A review of medical literature mainly PubMed has revealed several studies reporting that HP pathogenesis extends beyond the GIT to be a predisposing factor for atherosclerosis, dyslipidemia, thrombosis, and CAD. However, it remains a controversial issue that warrants extensive research. CONCLUSION: This article gives insight into the diversity of opinions, evidence, and theories regarding the association between HP infection and CAD. The idea that CAD may be managed with antibiotics in certain patients seems to be creative and inspiring. More research is mandatory to either verify or reject this proposed correlation with strong scientific evidence and also to demonstrate the implications of the results on CAD management and outcome.

Can Big Data and Machine Learning Improve Our Understanding of Acute Respiratory Distress Syndrome?

Acute respiratory distress syndrome (ARDS) accounts for 10% of all diagnoses in the Intensive Care Unit, and about 40% of the patients succumb to the disease. Clinical methods alone can result in the under-recognition of this heterogeneous syndrome. The purpose of this study is to evaluate the role that big data and machine learning (ML) have played in understanding the heterogeneity of the disease and the development of various prediction algorithms. Most of the work in the field of ML in ARDS has been in the development of prediction models that have comparable efficacies to that of traditional models. Prediction algorithms have been useful in identifying new variables that may be important to consider in the future, supplementing the unknown information with the help of available noninvasive parameters, as well as predicting mortality. Phenotype identification using an unsupervised ML algorithm has been pivotal in classifying the heterogeneous population into more homogenous classes. Big data generated from ventilators in the form of ventilator waveform analysis and images in the form of radiomics have also been leveraged for the identification of the syndrome and can be incorporated into a clinical decision support system. Although the results are promising, lack of generalizability, "black box" nature of algorithms and concerns about "alarm fatigue" should be addressed for more mainstream adoption of these models.

Physiological Effects of High-Flow Nasal Cannula Therapy and Its Use in Acute Cardiogenic Pulmonary Edema.

High-flow nasal cannula (HFNC) is an open oxygen delivery system, which provides heated and humidified oxygen at a high flow (up to 60 L/min). This effect can improve mucociliary function, airway clearance, and level of comfort to the patient. It can provide controlled and adequate fraction of inspired oxygen (FiO2) between 21% and 100%. Generation of end-expiratory pressure helps in carbon dioxide washout, reduction of anatomical dead space, and recruitment of collapsed alveoli, ultimately improving tissue oxygenation. The use of HFNC in acute hypoxemic respiratory failure, post-extubation period, pre-intubation period, respiratory infection, and obstructive airway disease has been extensively studied, but there are very few studies regarding its use in cardiogenic pulmonary edema. This review provides the current understanding of the physiological effect of HFNC and its application in acute cardiogenic pulmonary edema (ACPE). We conducted a literature search on PubMed using appropriate terms and reviewed relevant articles published within the last 10 years. We found that initial therapy with HFNC in ACPE patients can improve oxygenation and respiratory rate. HFNC can potentially be an alternative to non-invasive positive-pressure ventilation in terms of initial oxygen therapy in patients with ACPE. There is a need for larger prospective studies to evaluate and develop guidelines to consider the use of HFNC in patients with ACPE. We also highlight the fact that if there is no improvement in arterial blood gas parameters after HFNC therapy, initiation of invasive ventilation should not be delayed.

Association Between Myasthenia Gravis and Systemic Lupus Erythematosus as a Comorbid State.

Systemic lupus erythematosus (SLE) and myasthenia gravis (MG) are autoimmune states which have presentational similitude. Both conditions test serologically positive for anti-nuclear antibodies and require exceptional differential diagnostic acumen to segregate one from the other. The hypothesized factors provoking these diseases may be immunological, genetic, hormonal, or environmental and can be better understood by large-scale controlled epidemiological studies. Biochemical factors such as variation in CXC (an α chemokine subfamily), CXCL13, and granulocyte-macrophage colony-stimulating factor levels are assumed to play a pivotal role in the pathogenesis of SLE and MG; however, further studies are required to understand their exact mechanism and effect on the underlying autoimmune diseases. Following this, another precipitating factor for this overlap is believed to be thymectomy which is performed to eliminate MG symptoms. Although thymectomy is the effective treatment modality in MG patients, other findings and data support the view that this procedure may lead to the development of other autoimmune states such as SLE. It is evident from previously published data and case reports that patients with one autoimmune disease who underwent thymectomy contracted SLE and became more susceptible to other autoimmune diseases compared to the general population. Post-thymectomy follow-up of patients provides us with mechanistic clues for understanding the development of SLE-MG overlap; hence, in MG patients who have undergone thymectomy, any clinical and immune serological SLE suspicion should be carefully evaluated.

Risk Assessment Using the Association Between Renin-Angiotensin Genes Polymorphisms and Coronary Artery Disease.

Coronary artery disease (CAD) is a multifactorial disease that involves genetic and environmental interaction. In addition to the well-known CAD risk factors, such as diabetes mellitus, hypertension, hyperlipidemia, and atherosclerosis, it has a genetic component that predisposes to its occurrence even in young people. One of the most commonly studied genes that increase the susceptibility to CAD is renin-angiotensin system (RAS) genes polymorphisms mainly angiotensin-converting enzyme gene (ACE) polymorphisms, angiotensinogen polymorphisms, angiotensin- II type 1 receptor gene polymorphisms, and many other genes. These genetic polymorphisms have a direct association with CAD development or indirect association through causing atherosclerosis and hypertension which, in turn, are complicated by CAD later on. The difference between genetic mutations and polymorphisms lies in the frequency of the abnormal genotype. If the frequency is 1% and more in the general population, it is called polymorphism and if it is less than 1%, then it is called a mutation. According to our findings, after thorough searching, which support the association of RAS genes polymorphisms with premature CAD, hypertension, hypertrophic cardiomyopathy, and atherosclerosis, we recommend additional studies in the form of clinical trials and meta-analyses aiming to create a specific diagnostic tool for CAD risk assessment and discovering the high-risk people as early as possible. Targeted gene therapy, being the future of medicine, needs to be taken into researchers' consideration. It can have promising results in these cases.

Changing the innate consensus about mesh fixation in trans-abdominal preperitoneal laparoscopic inguinal hernioplasty in adults: Short and long term outcome. Randomized controlled clinical trial.

INTRODUCTION: Inguinal hernioplasty is the standard treatment for inguinal hernia in adults. Mesh fixation was used to keep mesh in place for which various mesh fixation techniques have been used in laparoscopic inguinal hernia repair in adults, but their effectiveness has remained inconclusive. AIM OF THE WORK: to evaluate non fixation method of mesh laparoscopic inguinal hernioplasty as safe and effective as regard short and long term outcomes. PATIENTS AND METHODS: Over the period from July 2013 to July 2018, 798 patients with oblique inguinal hernias undergoing Trans abdominal preperitoneal technique (TAPP) were randomized into 3 groups: Group A; mesh non fixation 266 patients. Group B; tacker mesh fixation 266 patients Group C: Cyanoacrylic tissue glues (Histoacryl) mesh fixation 266 patients. Clinical effects were assessed by the following variables: intraoperative data, postoperative outcome as regard recurrence rate, postoperative pain [on visual analogue score (VAS)], analgesic consumption, operation time, hospital stay, and patient costs. Follow up was 18 months. RESULTS: There was no statistical difference between groups (A) and Group (C) regarding operative time, postoperative complications, and length of hospital stay and risk of chronic groin pain, postoperative pain score. In Group (B): the postoperative pain and complications were higher. There were 5 cases of hernia recurrence in all groups, but no significant differences among the three groups. CONCLUSION: Tacker Mesh fixation increased the risk of chronic groin pain. Pain score was higher with tacker mesh fixation. Laparoscopic TAPP inguinal hernia repair without tacker mesh fixation was safe and feasible with no significant increase in recurrence rates. Furthermore, mesh fixation with tacker procedure increased the risk of postoperative complications and patient costs. All ethical approval was given by our Faculty of Medicine medical ethical committee.

The efficacy and underlying mechanism of phosphodiesterase- 5 inhibitors in preventing cognitive impairment and Alzheimer pathology: A systematic review of animal studies.

BACKGROUND: Alzheimer disease (AD) initially presents with cognitive decline that affects the affected individual's daily activities. Cognitive decline reversal represents an important medical need, where Phosphodiesterase-5 inhibitors (PDE-5Is) might play a role. AIM: This systematic review was performed to verify the efficacy of PDE-5Is in preventing cognitive impairment and to elucidate the underlying mechanism. METHODS: Preclinical animal studies assessing the efficacy of PDE-5Is in preventing cognitive impairment and pathological changes by measuring Aß-42 ß42 and p-Tau were included in the analysis. CAMARADES Checklist was used to assess study quality. Further, various signaling pathways in different studies were examined. RESULTS AND OUTCOMES: Data of behavioral tests were extracted and a meta-analysis was conducted. Fifteen animal trials met the inclusion criteria, and all reported the prevention of cognitive deficits by PDE-5Is in Alzheimer's disease. A significant effect of PDE-5Is in increasing the time spent in the target quadrant was reported in four of seven studies using the water maze. Four studies showed significant improvement in contextual fear memory freezing time, and three studies showed improvement in the 14 unit maze number of errors. CONCLUSIONS: Cognitive decline in preclinical AD finds tauopathy has a more impact than Aß-42. This systematic review showed that PDE-5 inhibitors might help prevent cognitive impairment in AD, and while its mechanism of action is non-related to Aß-42, it might include decrease p-Tau, increase CREB and BDNF or suppressing apoptosis and inflammation. However, the efficacy of PDE-5 inhibitors in preventing cognitive impairment remains unclear due to various limitations, such as the small number of included studies, the high risk of bias, the lack of an integrated study design, and low reporting quality.

The impact of caudally administrated tramadol on immune response and analgesic efficacy for pediatric patients: a comparative randomized clinical trial.

BACKGROUND: Immune responses appear to be affected by anesthetics and analgesics. We investigated the effects of caudal tramadol on the postoperative immune response and pain management in pediatric patients. METHODS: Sixty ASA-I pediatric patients aged 3-10 years undergoing lower abdominal surgery. Patients were randomly assigned either to a caudal bupivacaine (0.25%) group (group B), or a group that received caudal tramadol (1 mg/kg) added to the bupivacaine (0.25%) (group T). Both were diluted in a 0.9% NaCl solution to a total volume of 1ml/kg. The systemic immune response was measured by collecting blood samples preoperatively, at the end of anesthesia, and at 24 and 72 hours postoperatively, and studied for interleukin IL-6, C-reactive proteins (CRP) cortisol levels, and leucocytes with its differential count. Postoperative pain was assessed along with sedation scales. RESULTS: Postoperative production of IL-6 was significantly higher in group B at the end of anesthesia, than at the 24th hour, and at the 72nd hour in group B and group T, respectively. The immune response showed leukocytosis with increased percentages of neutrophil and monocytes, and a decreased lymphocyte response rate within both groups with no significant differences between the groups. Cortisol and CRP were significantly higher in group B. CONCLUSIONS: Adding tramadol to a caudal bupivacaine block can attenuate the pro-inflammatory cytokine response, Cortisol, and CRP in children undergoing lower abdominal surgery.

Influence of diode laser and warm air drying on the shear bond strength of Lithium di-silicate to Dentin. An in-vitro study / Influência do laser de diodo e da secagem com ar quente na resistência ao cisalhamento do Di-silicato de Lítio a dentina. Um estudo in-vitro

Objective: The current study aimed to evaluate the effect of diode laser irradiation (980 nm) and warm air drying (50°C) on shear bond strength between Lithium di-silicate (IPS e.max; Ivoclar) and human dentin using both (Etch & Rinse) adhesive, Adper™ Single Bond 2 (3M ESPE) and (Self-etch) adhesive, Single Bond UniversalTM(3M ESPE) before adhesive polymerization. Material and Methods: 54 sound lower molars were sectioned to obtain flat dentinal surfaces. Specimens were divided into 2 equal groups (n=27): Group 1 (ER) and Group 2 (SE) according to bonding approach. Each subgroup was subdivided according to dentin surface treatment into 3 equal subgroups (n=9): Control (Co), Diode laser irradiation (L) and Warm air drying (W). All specimens were adhesively cemented to IPS e.max® CAD discs using RelyX™ Ultimate Clicker™(3M ESPE) resin cement. Samples were then subjected to pre-loading in a thermodynamic manner. All samples were tested for shear bond strength using computer-controlled material testing machine. Data analysis was performed using two-way (ANOVA) (p< 0.05) followed by pair-wise Tukey's post-hoc tests. Results: In (SE) group, the subgroup (W) had the highest shear bond strength values followed by (Co) subgroup and the least was (L) subgroup with statistically significant difference. As for (ER) group, the subgroup (W) had the highest shear bond strength values followed by (Co) subgroup and the least was (L) subgroup with no statistically significant difference. Conclusion: Warm air drying for (SE) bonding approach increased shear bond strength of Lithium di-silicate to human dentin and can be introduced as a new effective protocol.(AU)

Objetivo: o objetivo do estudo atual é avaliar o efeito da radiação do laser de diodo (980nm) e secagem de ar quente (50°C) na resistência ao cisalhamento entre dissilicati de Lítio (IPS e.max; Ivoclar) e a dentina humana usando ambos modelos de adesivos (condicionamento total) Adper™ Single Bond e (auto-condicionante) Single Bond Universal™ (3M ESPE), Single Bond UniversalTM (3M ESPE) antes da fotopolimerização. Material e Métodos: 54 segundos molares inferiores foram selecionados para obter superfícies dentinárias planas. Os espécimes foram divididos em 2 grupos iguais (n=27): grupo 1 (ER) e grupo 2 (SE) de acordo com protocolo de adesividade. Cada grupo foi subdividido de acordo com o tratamento de superfície dentro de 3 subgrupos iguais (n=9): Controle (co), irradiação com laser de diodo (L) e secagem com ar quente (W). Todos os espécimes foram adesivamente cimentados a discos de IPS emax CAD usando RelyX Ultimate Clicker (3M ESPE) cimento resinoso. As amostras foram então submetidas a pré-carregamento de forma termodinâmica. Todas as amostras foram testadas para resistência a cisalhamento usando máquina de teste de materiais controlados por computador. A análise de dados foi realizada usando ANOVA dois fatores (p<0.05) seguindo por testes de Tukey pareado como test post-hoc. Resultados: No grupo (SE), o subgrupo (W) apresentou maiores valores de resistência ao cisalhamento seguindo o subgrupo (Co) é o menor foi o subgrupo (L) com diferença estatisticamente significativa. Já para o grupo (Er), o subgrupo (W) apresentou os maiores valores de resistência ao cisalhamento seguido do grupo (Co) e o menor foi o subgrupo (L) sem diferença estatisticamente significante. Conclusão: a secagem com ar quente para a abordagem de adesividade (Se) aumentou a resistência ao cisalhamento do dissilicato de lítio à dentina humana e poderia ser introduzido como um novo e eficaz protocolo(AU)

Comparison of dexamethasone or intravenous fluids or combination of both on postoperative nausea, vomiting and pain in pediatric strabismus surgery.

BACKGROUND: Strabismus surgery is perhaps a pediatric surgical procedure that has the strongest evidence of postoperative nausea and vomiting (PONV) risk. This randomized controlled blind study was designed to evaluate the efficacy of combined therapy of dexamethasone and intraoperative superhydration vs their monotherapy on the incidence and severity of PONV and on pain intensity after pediatric strabismus surgery. METHODS: A total of 120 children aged 6 to 12 years undergoing strabismus surgery were randomized to equally 3 groups to receive 0.15 mg/kg dexamethasone (dexamethasone group) or intraoperative superhydration of lactated Ringer's solution in a dose of 30 mL/kg per fasting time (superhydration group), or a combination of dexamethasone and intraoperative fluid in the same strategy (combination therapy group). The incidence and severity of PONV and pain using visual analog scale score, and need for supplemental antiemetic and analgesic therapy and their consumptions were assessed and compared in the 3 studied groups for 24 hours postoperatively. RESULTS: The incidence of PONV and postoperative vomiting was significantly lower (P> .001) in the combination therapy group (5% and 5% respectively) compared with the dexamethasone group (35% and 30%) and superhydration group (32.5% and 35%). There was no significant difference among patients in the superhydration group and dexamethasone group in the cumulative incidences of PONV in the whole 24 hours postoperatively. Postoperative aggregated visual analog scale pain score and total acetaminophen consumption showed a significant reduction (P> .05) in the combination therapy group together with significant prolongation of time to the first analgesic request compared with both the superhydration group and the dexamethasone group. CONCLUSION: Combined therapy of 0.15 mg/kg dexamethasone 1 minute before induction and intraoperative fluid superhydration is an effective and safe way to reduce PONV and pain better than monotherapy of dexamethasone, or intraoperative superhydration separately for pediatric strabismus surgery.

Metallothionein 2A expression and its relation to different clinical stages and grades of breast cancer in Egyptian patients.

OBJECTIVE: To assess the relation of blood MT-2A expression, serum zinc, copper, Cu/Zn ratio, total antioxidant status (TAS), total oxidant status (TOS) and oxidant status index (OSI) with benign and malignant breast tumors, also, their relation to different clinical stages and grades of breast cancer. MATERIAL AND METHODS: Unrelated 199 female patients with breast tumor and 120 healthy controls were enrolled in this study. Metallothionein-2A (MT-2A) expression was assessed by quantitative real-time polymerase chain reaction (RT-PCR). Serum MT-2A levels were measured by ELISA. Serum copper (Cu) and Zinc (Zn) concentrations were determined by atomic absorption spectrophotometry. Serum TOS and TAS levels were measured colorimetrically. RESULTS: Our study demonstrated that blood metallothionein-2A mRNA level, serum MT-2A, copper, Cu/Zn ratio, total oxidant status and oxidant status index were significantly increased, while, serum zinc level and total antioxidant status were significantly decreased in patients with breast cancer and benign breast disease as compared to controls and in breast cancer group as compared to the benign one. CONCLUSIONS: Blood metallothionein-2A expression and serum MT-2A levels could be important prognostic indices of less differentiated, more aggressive breast cancer phenotype. Disturbance of copper, zinc and oxidative stress status might contribute to the pathogenesis of breast tumor and could be useful biomarkers for diagnosing and monitoring such disease.

Surgical treatment of recurrent stress urinary incontinence in women: a systematic review and meta-analysis of randomised controlled trials.

CONTEXT: Recurrent stress urinary incontinence (R-SUI) represents a management dilemma; however, only a limited number of randomised controlled trials (RCTs) have assessed the various surgical procedures used for its treatment. OBJECTIVE: To assess the effectiveness and complications of various surgical procedures for the treatment of female R-SUI. EVIDENCE ACQUISITION: A prospective peer-reviewed protocol was prepared a priori. A systematic literature review of all published RCTs comparing surgical procedures for treatment of R-SUI was performed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analysis statement. Data were analysed using RevMan 5. EVIDENCE SYNTHESIS: We conducted a literature search from 1945 to February 2013. Data were available for a total of 350 women in 10 RCTs with a mean follow-up of 18.1 mo. Meta-analysis was possible for the comparison of retropubic tension-free vaginal tape (RP-TVT) versus transobturator tension-free vaginal tape (TO-TVT) in five RCTs (n = 135). There was no statistically significant difference between RP-TVT and TO-TVT in the patient-reported improvement (odds ratio [OR]: 0.84, 95% confidence interval [CI], 0.41-1.69) or objective cure/improvement (OR: 1.75; 95% CI, 0.86-3.54). One RCT showed a trend towards a higher rate of patient-reported and objective cure/improvement with the inside-out TO-TVT compared with the outside-in; however, it was not statistically significant (OR: 3.00; 95% CI, 0.85-10.57, and OR: 3.32; 95% CI, 0.96-11.41, respectively). There was no significant difference between Burch colposuspension and RP-TVT (one RCT) in patient-reported improvement (OR: 0.33; 95% CI, 0.01-8.57) or objective cure/improvement (OR: 0.52; 95% CI, 0.13-2.05). CONCLUSIONS: This meta-analysis shows no evidence of a significant difference in patient-reported and objective cure/improvement rates between RP-TVT and TO-TVT in the surgical treatment of women with R-SUI. However, due to the relatively low number of patients, the analysis might be underpowered. This review highlights the poor level of evidence in this field and the need for well-designed clinical trials to address this important clinical dilemma.

Systematic review and meta-analysis of "inside-out" versus "outside-in" transobturator tapes in management of stress urinary incontinence in women.

OBJECTIVES: To directly compare the current evidence for the efficacy, complications, quality of life and cost to health services of both transobturator tension free vaginal tape procedures - "inside-out" versus "outside-in" - in the surgical treatment of female stress urinary incontinence. STUDY DESIGN: A prospective peer-reviewed protocol was prepared a priori, and a systematic search of relevant databases from 1966 to January 2011 was performed. Meta-analyses of five randomised trials and three cohort studies were performed separately in accordance with PRISMA and MOOSE, respectively. RESULTS: There was no significant difference in patient-reported cure/improvement (OR 1.25, 95%CI 0.78, 1.99; p=0.35) nor in objective cure/improvement (OR 1.66, 95%CI 0.8, 3.43, p=0.17) between the two groups at 12-month follow-up. Vaginal angle injuries were significantly higher with the outside-in route (OR 0.14, 95%CI 0.05, 0.41, p=0.0003). Groin/thigh pain and de-novo urgency were non-significantly higher with the inside-out route (OR 1.42, 95%CI 0.94, 2.13, p=0.10 and OR 1.46, 95%CI 0.63, 3.36, p=0.38, respectively). There was no significant difference in postoperative quality of life scores between the two groups (WMD -1.65; 95% CI -5.76, 2.46, p=0.43). None of the trials reported a "health-cost" analysis. Meta-analysis of cohort studies confirmed similar results. CONCLUSIONS: This is the first reported direct meta-analysis comparing both routes of transobturator tapes. It showed no evidence of significant differences in the efficacy and impact on women's quality of life between "inside-out" and "outside-in" transobturator tapes up to one-year follow-up. The "inside-out" route was associated with significantly fewer vaginal angle injuries but with trends towards higher risk of postoperative groin pain. Long-term follow-up of adequately powered RCTs is required to assess if these results pertain.