Influence of zoledronic acid and low-intensity laser on collagen fibers during the bone repair process.

PURPOSE: To evaluate collagen fibers during the bone repair process in critical defects created in the tibias of rats, treated with zoledronic acid (AZ) associated with low-level laser therapy (LLLT). METHODS: Ten rats were distributed according to treatment: group 1) saline solution; group 2) LLLT; group 3) AZ; group 4) AZ and LLLT. AZ was administered at the dose of 0.035 mg/kg at fortnightly intervals over eight weeks. Next, 2-mm bone defects were created in the tibias of all animals. The bone defects in groups 2 and 4 were irradiated LLLT in the immediate postoperative period. After periods 14 and 28 of application, the animals were euthanized, and birefringence analysis was performed. RESULTS: Approximately 90% of the total area was occupied by collagen fibers within the red color spectrum, this area being statistically larger in relation to the area occupied by collagen fibers within the green and yellow spectrum, in the four groups. Over the 14-day period, there was no statistically significant difference between the groups. In the 28-day period, group 2 (14.02 ± 15.9%) was superior in quantifying green birefringent fibers compared to group 1 (3.06 ± 3.24%), with p = 0.009. CONCLUSIONS: LLLT associated with ZA is effective in stimulating the neoformation of collagen fibers. The LLLT group without the association with ZA showed a greater amount of immature and less organized matrix over a period of 28 days.

Body lift with lateral thigh lift: surgical technique and comparison with the inferior body lift.

BACKGROUND: Despite its rarity, cutaneous adipose tissue excess in the trochanteric region following massive weight loss is a surgical challenge. The aim of this work is to propose a surgical technique for lifting the outer thighs by describing its indications and its limitations. METHODS: 74 patients were recruited into the study between 2018 2021. Two groups were identified: patients with bodylift combined with lateral thigh lift (n=20) and patients with lower bodylift (n=54). Satisfaction was obtained through the BODY Q questionnaire. The average operating time is 45 minutes longer when an outer thigh lift is performed. The median length of hospitalization is similar. The complication rate is 26% for the bodylift group and 60% for the thigh lift group (p<0.01); the most common complication is dehiscence. RESULTS: Data analysis shows that the lateral thigh lift technique does not affect immediate postoperative evolution or hospitalization duration, proving its safety. There was an increase in total complications among patients who underwent lateral thigh lifts. Dehiscence is the most common complication, which is an outpatient treatment. The satisfaction rate is high. Satisfaction is linked to improved quality of life. CONCLUSIONS: In our experience, the technique described is an effective means of trochanteric deformities.

Alzheimer's Disease: An Updated Overview of Its Genetics.

Alzheimer's disease (AD) is the most common neurodegenerative disease in the world. It is classified as familial and sporadic. The dominant familial or autosomal presentation represents 1-5% of the total number of cases. It is categorized as early onset (EOAD; <65 years of age) and presents genetic mutations in presenilin 1 (PSEN1), presenilin 2 (PSEN2), or the Amyloid precursor protein (APP). Sporadic AD represents 95% of the cases and is categorized as late-onset (LOAD), occurring in patients older than 65 years of age. Several risk factors have been identified in sporadic AD; aging is the main one. Nonetheless, multiple genes have been associated with the different neuropathological events involved in LOAD, such as the pathological processing of Amyloid beta (Aß) peptide and Tau protein, as well as synaptic and mitochondrial dysfunctions, neurovascular alterations, oxidative stress, and neuroinflammation, among others. Interestingly, using genome-wide association study (GWAS) technology, many polymorphisms associated with LOAD have been identified. This review aims to analyze the new genetic findings that are closely related to the pathophysiology of AD. Likewise, it analyzes the multiple mutations identified to date through GWAS that are associated with a high or low risk of developing this neurodegeneration. Understanding genetic variability will allow for the identification of early biomarkers and opportune therapeutic targets for AD.

Vertical Body Lift: Surgical Technique and Comparison with the Inferior Body Lift Technique.

BACKGROUND: Patients with massive weight loss have excessive skin laxity along both vertical and transverse axes. Vertical body lift (VBL) is a body-contouring technique addressing both excesses, promoting not only body lifting but also a tightening effect. The aim of this study was to describe the authors' VBL surgical technique and its potential clinical applications. In addition, they present their experience among postbariatric surgery patients to compare surgical aspects and outcomes of VBL and the classic inferior body lift (IBL) technique. METHODS: The authors reviewed data on 140 consecutive postbariatric surgery patients who underwent a body lift procedure between January of 2018 and March of 2020. The patients were divided into two groups: the VBL group and the IBL group. Patient demographics, operative details, and postoperative outcomes were compared between groups. RESULTS: Of the 140 patients included in the study, 92 underwent IBL and 48 underwent VBL. There were no statistically significant differences between groups for surgical duration (IBL, 192 minutes; VBL, 193 minutes), hemoglobin decrease (IBL, 2.32 g/dL; VBL, 2.11 g/dL), hospital length of stay (IBL, 5.4 days; VBL, 5.7 days), or complication rate (IBL, 32%; VBL, 31%). CONCLUSIONS: The authors' study shows comparable operative details and postsurgical outcomes between the VBL and classic IBL techniques. In their experience, VBL is a reliable and reproducible technique that can improve aesthetic and functional outcomes in a subpopulation of approximately one-third of patients with massive weight loss. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, III.

Bacteriological and mechanical impact of the Sterrad sterilization method on personalized 3D printed guides for mandibular reconstruction.

Surgical cutting guides are increasingly used for maxillofacial reconstruction. They are usually provided by laboratories. In recent years, surgical teams have published studies on the possibility of manufacturing their own cutting guides thanks to 3D printers. The object of this study is to analyze the impact of the sterilization on the surface of those personalized models and to assess the effectiveness of sterilization. Using the data from high-resolution CT scan of patient, 3D models were generated through computerized assisted design and fabricated with a 3D printer using Acrylonitrile Butadiene Styrene (ABS). For the sterilization, a Sterrad method was used. In order to evaluate the effectiveness of sterilization, 3D models were artificially contaminated with several bacterial reference strains, sterilized and finally cultured. The surfaces and mechanical modifications were analyzed before and after sterilization with infrared spectrometry, surface contact angle, extensometer, scanning electron microscopy and atomic force microscopy. Ten models of different shapes and 24 samples were fabricated, sterilized and analyzed. The 3D models were designed in 48 h, printed in an average of 122 min and underwent a 47 min cycle of sterilization. All experimentally contaminated 3D models were negative in culture, with at least, a six log reduction of the initial inoculum. The hydrophobicity and roughness of the surface suffered few changes. The reproducibility of this procedure was proved by identical results in the three sterilization rounds. Using Sterrad process for the sterilization of ABS printed material doesn't represent a bacterial risk for the patient. It is a feasible and safe innovative reconstructive method that can save time particularly for oncological cases.

One-step facial feminization surgery: The importance of a custom-made preoperative planning and patient satisfaction assessment.

BACKGROUND: The availability of more accurate techniques used for transgender surgery has resulted in an increased number of patients requesting facial feminization surgery (FFS). The aim of this study was to present the FFS pre-operative planning of the authors' male-to-female transsexual patients using photo-editing software, computer-aided design (CAD), modeling, and three-dimensional (3D) printing. MATERIAL AND METHODS: Twenty-five patients underwent FFS between November 2015 and May 2018. They were retrospectively included in this study, and their records were analyzed. Patients' 3D facial models were printed and used for an accurate preoperative planning and shown to the patients. To assess patient satisfaction, the preoperative, six-month, and one-year postoperative scores obtained using Satisfaction With Life Scale (SWLS) and Subjective Happiness Scale (SHS) were compared. The scores following a normal distribution obtained for each patient were compared using a paired t-test. RESULTS: The 3D model preparation mean time was 145±13.2 min. A total of 114 surgical procedures were carried out. The mean operative time was 420±23 min. Patients experienced no postoperative complication. All patients were very satisfied after surgery, with a significant difference between pre- and postoperative scores (p = 0.002; p = 0.03). CONCLUSION: With use of 3D modeling, surgeons are nearing a custom-made surgery era, especially required for complex procedures such as FFS. We suggest using 3D technology for a more accurate preoperative planning.

Reliability of Color Doppler Ultrasound Imaging for the Assessment of Anterolateral Thigh Flap Perforators: A Prospective Study of 30 Perforators.

Despite numerous advantages, the anterolateral thigh perforator flap suffers from the variable position and nature of its perforators. The aim of the authors' study was to assess the reliability of preoperative color Doppler ultrasound imaging for the exploration of perforator location and course of anterolateral thigh perforator flaps. A prospective cohort study involving patients for whom head and neck reconstruction was planned with thin anterolateral thigh perforator flaps was conducted. Each patient underwent a color Doppler ultrasound exploration of the thighs, in the operating room, immediately before surgery. The sonographer was the surgeon who raised the flaps. Perforators were sought according to surgical needs, and the same location protocol was followed for all of the cases, using an orthonormal coordinate system to report the passages of the perforators through the vastus lateralis aponeurosis. Between January of 2016 and January of 2017, 22 thin anterolateral thigh perforator flaps were successfully harvested. Thirty perforators were located and used. The median distance between the preoperative color Doppler ultrasound planning and the final location of the perforators was 5 mm, statistically smaller than a 10-mm threshold (p = 0.002). Color Doppler ultrasound effectively predicted the nature of the perforators in 90 percent of the cases. The median duration for perforator color Doppler ultrasound location was 3 minutes, statistically shorter than 10 minutes (p = 0.0001). Preoperative color Doppler ultrasound seems to be reliable, accurate, and compatible with a quick routine assessment during patient setup for the elevation of thin anterolateral thigh perforator flaps. CLINICAL QUESTION/LEVEL OF EVIDENCE: Diagnostic, II.

Prevalence of High-Risk Genotypes of Human Papillomavirus: Women Diagnosed with Premalignant and Malignant Pap Smear Tests in Southern Ecuador.

Human papillomavirus (HPV) is the primary infectious agent for the development of cervical cancer, although the presence of the virus alone is insufficient for viral development and proliferation; this can be attributed to the increase in potential oncogenic risk, along with other risk factors. In the present investigation, the prevalence of high-risk HPV was determined from samples of premalignant or malignant cervical cytology in women from the southern region of Ecuador. The kit we used was able to detect genotypes 16, 18, 31, 33, 35, 39, 45, 51, 52, 56, 58, and 59. In addition, 64.5% of the analyzed samples were positive for HPV, with genotypes 16 and 18 being the most prevalent (16 was detected in 148 samples and 18 in 108). Genotypes 58 and 51 were the third most frequent simple and multiple infections, respectively. The data are very similar to those obtained worldwide, suggesting that the strategy of sex education, and the use of vaccines as primary prevention agents, could significantly decrease the incidence and mortality rate of cervical cancer in the southern region of Ecuador.

Novel technique of vulvo-vaginal rejuvenation by lipofilling and injection of combined platelet-rich-plasma and hyaluronic acid: a case-report.

BACKGROUND: To describe a new surgical procedure and its results: the vulvo-vaginal rejuvenation by lipofilling and an injection of combined platelet-rich-plasma (PRP) and hyaluronic acid (HA). Sexual life for women is affected by the effect of aging and by post partum traumatism. There are no standard non-invasive treatments to offer to improve the trophic and dimensional alterations of the vulvo-vaginal area. The surgical procedure consists in a vaginoplasty by lipofilling of the posterior vaginal wall far from the vascular axes and with an injection of an injection of combined PRP and HA subcutaneously in the perineum. To illustrate the technique and evaluate its results, we present the case of a 39 year-old-female with history of episiotomy presented that vaginal laxity resistant to physical therapy. To assess the results regarding the sexual quality of life we used the modified Stabbatsberg self-rating scale. FINDINGS: There were no intra-operative complications with this simple procedure. During follow-up we observed an improvement in the modified Stabbatsberg scale and a vulvo-perineal rejuvenation by improving the vaginal trophicity and restoring a normal vaginal caliber. No post-operative complications occurred. CONCLUSIONS: Vulvo-vaginal rejuvenation lipofilling and an injection of combined platelet-rich-plasma and hyaluronic acid is a minimally invasive technique that is safe and easy to perform. Further studies are necessary to assess more thoroughly the effectiveness and safety of this procedure and assess medium and long term results.

Situación actual de la práctica profesional de la neuropsicología en México / Current state of professional Neuropsychological practice in Mexico

El objetivo de este estudio fue conocer las características de la práctica neuropsicológica en México, incluyendo la formación profesional, la situación laboral actual, el proceso de evaluación y diagnóstico, rehabilitación, docencia e investigación. Participaron 171 profesionales en México, quienes respondieron una encuesta electrónica entre el 1 de julio del 2013 y el 1 de enero del 2014. El 76% indicó haber obtenido su entrenamiento en neuropsicología durante el postgrado y, aunque indicaron estar muy satisfechos con su labor, su satisfacción con el salario fue menor. La mayoría trabajan con personas con problemas de aprendizaje (78%) y trastornos de atención e hiperactividad (74%). El 91% se dedica a evaluación y diagnóstico, 61% a rehabilitación, 67% a docencia y 60% a investigación. Los problemas más comunes fueron la falta de datos normativos (63%) y el alto coste de los test (58%). Las barreras más observadas en el desarrollo de la neuropsicología fueron la falta de colaboración entre los profesionales y la falta de programas de formación clínica. Durante las últimas décadas se han logrado importantes avances a nivel profesional en el campo de la neuropsicología en México. Sin embargo, aún quedan aspectos por mejorar como el establecimiento de criterios para la regulación de la práctica neuropsicológica en el país.

The objective of this study was to analyze the characteristics of the profession of neuropsychology in Mexico, including the background, professional training, current work situation, evaluation and diagnosis procedures, rehabilitation, teaching, and research. 171 professionals from Mexico completed an online survey between July 1, 2013 and January 1 of 2014. 76% indicated having obtained their training in neuropsychology in a postgraduate program, also to be very satisfied with their jobs, but less satisfied with their salary. The majority works with individuals with learning difficulties (78%) and attention and hyperactivity disorder (74%). 91% works in evaluation and diagnosis, 61% in rehabilitation, 67% in teaching, and 60% in research. Some of the most common problems with the instruments were the lack of normative data (63%) and their high cost (58%). The most common barriers for the development of neuropsychology in Mexico were the lack of collaboration between professionals and the lack of clinical training programs. Even though there have been important progresses in the field of professional neuropsychological practice during the last past decades in Mexico, there are still some aspects to improve, like the establishment of standards for the regulation in the country.

Hidrocefalia congénita e hidranencefalia en el Hospital Materno Infantil e Instituto Hondureño de Seguridad Social del 2005 al 2008 / Congenital Hydrocephaly

La Hidrocefalia se trata de un estado patológico de diferentes causas, donde hay un incremento de la cantidad de líquido cefalorraquídeo (LCR) ventricular, por una ruptura de equilibrio entre la formación y absorción del mismo, que lleva a un aumento de la presión intracraneal con disminución concomitante de la sustancia cerebral, sin que esto deba asociarse siempre a macrocefalia. Objetivo: Caracterizar Hidrocefalia congénita e Hidranencefalia y algunos factores de riesgo en dos hospitales del país. Metodología: Se realizó un estudio retrospectivo descriptivo, el universo fue de 210 casos en el Hospital Materno Infantil, y 100 en el Instituto Hondureño de Seguridad Social. Se seleccionó una muestra intencionada de 49 casos en el Hospital Materno Infantil y 50 casos en el Instituto Hondureño de seguridad social (IHSS). El sistema de muestreo fue temporal. Se elaboró un instrumento de recolección de datos tipo encuesta para extraer la información de los expedientes clínicos. Resultados: 42% de casos con hidrocefalia congénita se encontró en madres de 18-29 años de edad y 60% con hidranencefalia se encontró en jóvenes menores 18 años de edad. Se presentó la hidrocefalia congénita de tipo comunicante en un 66.70% sobre la no comunicante. La Hidrocefalia congénita no comunicante es más frecuente en el género femenino (48.5%), mientras que la hidrocefalia congénita comunicante predomina en el sexo masculino (56.1%)....(AU)