Algae as a source of peptides inhibitors of the angiotensin-converting enzyme: a systematic review.

Hypertension is a factor that contributes to the risk of chronic diseases. The inhibition of angiotensin-I converting enzyme (ACE) is a useful therapeutic approach to the hypertension treatment. The algae have been an alternative for the production of ACE inhibitory (ACEi) peptides from enzymatic hydrolysis due to their protein-rich biomass. The aim of this study was to systematically review the literature regarding the production, composition and activity of ACEi peptides derived from algae proteins. Systematic database searches identified 648 related articles. Among these, only 14 were selected according to the eligibility criteria to this review. Macroalgae are more studied than microalgae as sources of ACEi peptides. Furthermore, hydrolysates by thermolysin or bromelain exhibited the highest ACEi activity compared to other enzymes. The main features of the peptides with high ACE inhibition are low molecular weight, short amino acids sequence and non-competitive inhibition pattern. In vivo studies using hydrolysates and peptides derived from algae proteins showed antihypertensive activity in spontaneously hypertensive rats (SHR). Thus, it is suggested that ACEi peptides derived from algae can be considered as potential antihypertensive.

Effect of osteopathic manipulation on gait asymmetry.

CONTEXT: Movement and loading asymmetry are associated with an increased risk of musculoskeletal injury, disease progression, and suboptimal recovery. Osteopathic structural screening can be utilized to determine areas of somatic dysfunction that could contribute to movement and loading asymmetry. Osteopathic manipulation treatments (OMTs) targeting identified somatic dysfunctions can correct structural asymmetries and malalignment, restoring the ability for proper compensation of stresses throughout the body. Little is currently known about the ability for OMTs to reduce gait asymmetries, thereby reducing the risk of injury, accelerated disease progression, and suboptimal recovery. OBJECTIVES: To demonstrate whether osteopathic screening and treatment could alter movement and loading asymmetry during treadmill walking. METHODS: Forty-two healthy adults (20 males, 22 females) between the ages of 18 and 35 were recruited for this prospective intervention. Standardized osteopathic screening exams were completed by a single physician for each participant, and osteopathic manipulation was performed targeting somatic dysfunctions identified in the screening exam. Three-dimensional (3-D) biomechanical assessments, including the collection of motion capture and force plate data, were performed prior to and following osteopathic manipulation to quantify gait mechanics. Motion capture and loading data were processed utilizing Qualisys Track Manager and Visual 3D software, respectively. Asymmetry in the following temporal, kinetic, and kinematic measures was quantified utilizing a limb symmetry index (LSI): peak vertical ground reaction force, the impulse of the vertical ground reaction force, peak knee flexion angle, step length, stride length, and stance time. A 2-way repeated-measures analysis of variance model was utilized to evaluate the effects of time (pre/post manipulation) and sex (male/female) on each measure of gait asymmetry. RESULTS: Gait asymmetry in the peak vertical ground reaction force (-0.6%, p=0.025) and the impulse of the vertical ground reaction force (-0.3%, p=0.026) was reduced in males following osteopathic manipulation. There was no difference in gait asymmetry between time points in females. Osteopathic manipulation did not impact asymmetry in peak knee flexion angle, step length, stride length, or stance time. Among the participants, 59.5% (25) followed the common compensatory pattern, whereas 40.5% (17) followed the uncommon compensatory pattern. One third (33.3%, 14) of the participants showed decompensation at the occipitoatlantal (OA) junction, whereas 26.2% (11), one third (33.3%, 14), and 26.2% (11) showed decompensation at the cervicothoracic (CT), thoracolumbar (TL), and lumbosacral (LS) junctions, respectively. Somatic dysfunction at the sacrum, L5, right innominate, and left innominate occurred in 88.1% (37), 69.0% (29), 97.6% (41), and 97.6% (41) of the participants, respectively. CONCLUSIONS: Correcting somatic dysfunction can influence gait asymmetry in males; the sex-specificity of the observed effects of osteopathic manipulation on gait asymmetry is worthy of further investigation. Osteopathic structural examinations and treatment of somatic dysfunctions may improve gait symmetry even in asymptomatic individuals. These findings encourage larger-scale investigations on the use of OMT to optimize gait, prevent injury and the progression of disease, and aid in recovery after surgery.

Purification and characterization of a protease from Aspergillus sydowii URM5774: Coffee ground residue for protease production by solid state fermentation.

Solid state fermentation is a promising technology largely used in biotechnology process and is a suitable strategy for producing low-cost enzymatic products. At the present study, a novel enzyme obtained through solid state fermentation using Aspergillus sydowii was herein purified and characterized. The fermentations used coffee ground residue as substrate and the crude enzyme was submitted through further purification steps of: acetonic precipitation, DEAE-Sephadex and Superdex G-75 column. Both crude and purified enzymes were submitted to biochemical characterization of their thermostability, optimal temperature and pH, effects of inhibitors and metal ions. A purified protease was obtained with yield of 5.9-fold and 53% recovery, with maximal proteolytic activity of 352.0 U/mL. SDS-PAGE revealed a band of protein at 47.0 kDa. The enzyme activity was abolished in the presence of phenyl-methyl sulfonyl fluoride and partially inhibited against Triton X-100 (78.0%). The optimal activity was found in pH 8.0 at 45°C of temperature. Besides, the enzyme showed stability between 35°C and 50°C. It was possible to determine appropriate conditions to the obtainment of thermostable proteases with biotechnological interest associated with a method that concomitantly shows excellent production levels and recovery waste raw material in a very profitable process.

Bioengineering potato plants to produce benzylglucosinolate for improved broad-spectrum pest and disease resistance.

In traditional, small-scale agriculture in the Andes, potatoes are frequently co-cultivated with the Andean edible tuber Tropaeolum tuberosum, commonly known as mashua, which is believed to exert a pest and disease protective role due to its content of the phenylalanine-derived benzylglucosinolate (BGLS). We bioengineered the production of BGLS in potato by consecutive generation of stable transgenic events with two polycistronic constructs encoding for expression of six BGLS biosynthetic genes from Arabidopsis thaliana. First, we integrated a polycistronic construct coding for the last three genes of the pathway (SUR1, UGT74B1 and SOT16) into potato driven by the cauliflower mosaic virus 35S promoter. After identifying the single-insertion transgenic event with the highest transgene expression, we stacked a second polycistronic construct coding for the first three genes in the pathway (CYP79A2, CYP83B1 and GGP1) driven by the leaf-specific promoter of the rubisco small subunit from chrysanthemum. We obtained transgenic events producing as high as 5.18 pmol BGLS/mg fresh weight compared to the non-transgenic potato plant producing undetectable levels of BGLS. Preliminary bioassays suggest a possible activity against Phytophthora infestans, causing the late blight disease and Premnotrypes suturicallus, referred to as the Andean potato weevil. However, we observed altered leaf morphology, abnormally thick and curlier leaves, reduced growth and tuber production in five out of ten selected transgenic events, which indicates that the expression of BGLS biosynthetic genes has an undesirable impact on the potato. Optimization of the expression of the BGLS biosynthetic pathway in potato is required to avoid alterations of plant development.

[Analysis on the impact of the introduction of a quality management plan of the diabetes care process in a Health Area of Galicia (Spain)]. / Análisis del impacto de la implantación del plan de gestión de calidad del proceso asistencial de diabetes en un Área Sanitaria de Galicia.

OBJECTIVE: To analyse the impact of a management plan for the diabetes process on the level of control of HbA1c and the rate of hypoglycaemia. MATERIAL AND METHODS: The Health Area had a catchment population of 446,603. An anti-diabetic drug prescription (29,705 patients) was used to select diabetic patients. The variables recorded were: percentage of patients with HbA1c <8% and the hypoglycaemia rate before and after implementation of the quality program. RESULTS: The prevalence of diabetes was 11.8%, with 71.3% of them receiving some pharmacological treatment. In the year 2016, in the Integrated Health Area of Santiago de Compostela (Spain), 59.6% (95% CI: 57.9% -61.2%) of the patients had an HbA1c of less than 8%. After the implementation of the quality program, there was an increase in the number of controlled patients, reaching 63.6% (IRQ: 16.0%) in 2017, and 63.8% (95% CI: 62.5% - 65.2%) in 2018. The annual rate of hypoglycaemia increased non-significantly from 2.8 (95% CI: 2.22-3.35) in 2016, to 2.94 (95% CI: 2.35-2.35) in 2017 (P=.083), and 3.0 (95% CI: 2.44-3.56) in 2018 (P=.399). CONCLUSIONS: The implementation of the diabetes process management program enabled the level of control of HbA1c to be improved, as well as increase the percentage of patients who undergo regular check-ups, without increasing hypoglycaemia.

Cholecalciferol or Calcifediol in the Management of Vitamin D Deficiency.

Vitamin D deficiency is a global health problem due to its high prevalence and its negative consequences on musculoskeletal and extra-skeletal health. In our comparative review of the two exogenous vitamin D supplementation options most used in our care setting, we found that cholecalciferol has more scientific evidence with positive results than calcifediol in musculoskeletal diseases and that it is the form of vitamin D of choice in the most accepted and internationally recognized clinical guidelines on the management of osteoporosis. Cholecalciferol, unlike calcifediol, guarantees an exact dosage in IU (International Units) of vitamin D and has pharmacokinetic properties that allow either daily or even weekly, fortnightly, or monthly administration in its equivalent doses, which can facilitate adherence to treatment. Regardless of the pattern of administration, cholecalciferol may be more likely to achieve serum levels of 25(OH)D (25-hydroxy-vitamin D) of 30-50 ng/mL, an interval considered optimal for maximum benefit at the lowest risk. In summary, the form of vitamin D of choice for exogenous supplementation should be cholecalciferol, with calcifediol reserved for patients with liver failure or severe intestinal malabsorption syndromes.

Anti-inflammatory and immune properties of the peltatoside, isolated from the leaves of Annona crassiflora Mart., in a new experimental model zebrafish.

Establishing new animal models for the study of inflammation is very important in the process of discovering new drugs, since the inflammatory event is the basis of many pathological processes. Whereas rodent models have been the primary focus of inflammation research, we defend the zebrafish (Danio rerio) test as a feasible alternative for preclinical studies. Moreover, despite all the technological development already achieved by humanity, nature can still be considered a relevant source of new medicines. In this context, the aim of this work was to evaluate the anti-inflammatory effect of a substance isolated from the medicinal plant Annona crassilfora Mart, the peltatoside, in an inflammatory model of zebrafish. It was determined: (i) total leukocyte count in the coelomate exudate; (ii) N-acetyl-ß-d-glucuronidase (NAG); (iii) myeloperoxidase (MPO); (iv) and the histology of liver, intestine and mesentery. Peltotoside (25, 50 and 100 µg) and dexamethasone (25 µg) were administered intracelomatically (i.c.) 30 min before carrageenan (i.c.). Pretreatment with peltatoside at three doses significantly inhibited leukocyte recruitment in the coelomic cavity, and inhibited NAG and MPO activity against the action of Cg, in a similar manner as dexamethasone. However, some microlesions in the evaluated organs were detected. The dose of 25 µg showed an anti-inflammatory effect with lower undesirable effects in the tissues. Our results suggest that the zebrafish test was satisfactory in performing our analyzes and that the peltotoside has a modulatory action in reducing leukocyte migration.

Ultrasound-Assisted Enzyme-Catalyzed Hydrolysis of Collagen to Produce Peptides With Biomedical Potential: Collagenase From Aspergillus terreus UCP1276.

Ultrasound has been applied for varied purposes as it provides additional mechanical energy to a system, and is still profitable and straightforward, which are advantages for industrial applications. In this work, ultrasonic treatments were applied to purified collagenase fractions from a fermented extract by Aspergillus terreus UCP 1276 aiming to evaluate the potential effect on collagen hydrolysis. The physical agent was evaluated as an inductor of collagen degradation and consequently as a producer of peptides with anticoagulant activity. The sodium dodecyl sulphate-polyacrylamide gel electrophoresis analyses were also carried out to compare the hydrolysis techniques. The ultrasound (40 kHz, 47.4 W/L) processing was conducted under the same conditions of pH and temperature at different times. The ultrasound-assisted reaction was accelerated in relation to conventional processing. Collagenolytic activity was enhanced and tested in the presence of phenylmethanesulfonyl fluoride inhibitor. Underexposure, the activity was enhanced, reaching more than 72.0% of improvement in relation to the non-exposed enzyme. A period of 30 min of incubation under ultrasound exposure was enough to efficiently produce peptides with biological activity, including anticoagulation and effect on prothrombin time at about 60%. The results indicate that low-frequency ultrasound is an enzymatic inducer with likely commercial applicability accelerating the enzymatic reaction. Bioelectromagnetics. 2020;41:113-120. © 2019 Bioelectromagnetics Society.

Regulation of signaling pathways by tanshinones in different cancers.

Past several years have witnessed dramatic leaps in our understanding of rewiring of gene expression at the translation level during cancer developmentthat provides linchpin support to the transformed phenotype. Most recent and ground-breaking developments in the field of molecular oncology aredriven by an explosion in technological advancements and have started to reveal previously unimagined regulatory mechanisms and how they intricately co-ordinate to modulate cancer progression, loss of apoptosis and development of resistance against different therapeutics. However, the insights gained from work in this natural product research have far-reaching impact because of rapidly increasing repertoire of medicinally and biologically efficient phytochemicals. How Tanshinones mediate targeting of JAK-STAT, ER stress associated signaling cascade,PI3K/AKT/mTOR pathway,autophagy, TRAIL pathway and microRNAs are being discovered and will prove to be helpful in getting a step closer to personalized medicine.

Beneficios de la musicoterapia en las alteraciones conductuales de la demencia. Revisión sistemática / Benefits of music therapy on behaviour disorders in subjects diagnosed with dementia: a systematic review

Introducción. La demencia se caracteriza por un deterioro cognitivo y por la aparición de síntomas psicológicos y conductuales, entre los que destacan las alteraciones de percepción, del contenido del pensamiento, estado de ánimo y de conducta. Para tratar estos síntomas, además del tratamiento farmacológico, se utilizan intervenciones no farmacológicas, entre ellas la musicoterapia. Esta técnica novedosa, por sus características no verbales, puede ser usada en todas las fases del tratamiento de las personas con demencia ya que, aunque haya un gran deterioro cognitivo, las respuestas ante la música se mantienen hasta los estadios más avanzados de la enfermedad. Desarrollo. Se realizó una búsqueda bibliográfica con un intervalo temporal entre 2003 y 2013 en las bases de datos Academic Search Complete, PubMed, Science Direct y Dialnet. Los términos de búsqueda incluyeron la combinación de las palabras claves «music therapy, dementia, behaviour, behavioural disorders y behavioural disturbances». Se seleccionaron 11 registros de los 2188 localizados tras aplicar los criterios de inclusión. Conclusiones. El tratamiento con musicoterapia es beneficioso para mejorar las alteraciones conductuales, la ansiedad y la agitación en pacientes con demencia (AU)

Introduction. Dementia is characterised by cognitive deterioration and the manifestation of psychological and behavioural symptoms, especially changes in perception, thought content, mood, and conduct. In addition to drug therapy, non-pharmacological treatments are used to manage these symptoms, and one of these latter treatments is music therapy. Since this novel technique in non-verbal, it can be used to treat patients with dementia at any stage, even when cognitive deterioration is very severe. Patients’ responses to music are conserved even in the most advanced stages of the disease Development. A literature research was carried out using the following databases: Academic Search Complete, PubMed, Science Direct y Dialnet. The period of publication was 2003 to 2013 and the search keywords were «Music Therapy, Dementia, Behaviour, Behaviour Disorders y Behavioural Disturbances». Out of the 2188 studies that were identified, 11 studies met inclusion criteria for the systematic review. Conclusions. Music therapy is beneficial and improves behavior disorders, anxiety and agitation in subjects diagnosed with dementia (AU)

Benefits of music therapy on behaviour disorders in subjects diagnosed with dementia: a systematic review. / Beneficios de la musicoterapia en las alteraciones conductuales de la demencia. Revisión sistemática.

INTRODUCTION: Dementia is characterised by cognitive deterioration and the manifestation of psychological and behavioural symptoms, especially changes in perception, thought content, mood, and conduct. In addition to drug therapy, non-pharmacological treatments are used to manage these symptoms, and one of these latter treatments is music therapy. Since this novel technique in non-verbal, it can be used to treat patients with dementia at any stage, even when cognitive deterioration is very severe. Patients' responses to music are conserved even in the most advanced stages of the disease DEVELOPMENT: A literature research was carried out using the following databases: Academic Search Complete, PubMed, Science Direct y Dialnet. The period of publication was 2003 to 2013 and the search keywords were 'Music Therapy, Dementia, Behaviour, Behaviour Disorders y Behavioural Disturbances'. Out of the 2188 studies that were identified, 11 studies met inclusion criteria for the systematic review. CONCLUSIONS: Music therapy is beneficial and improves behavior disorders, anxiety and agitation in subjects diagnosed with dementia.

The role of metallothioneins, selenium and transfer to offspring in mercury detoxification in Franciscana dolphins (Pontoporia blainvillei).

The concentrations of mercury (Hg), selenium (Se) and metallothioneins (MT) were evaluated in fetuses, calves, juveniles and adults of the endangered coastal Franciscana dolphin (Pontoporia blainvillei) from Argentina. Mercury concentrations varied among analyzed tissues (liver, kidney, muscle and brain), with liver showing the higher concentrations in all specimens. An age-dependent accumulation was found in liver, kidney and brain. No significant relationship between Hg and MT concentrations was found for all tissues analyzed. Hepatic Hg molar concentrations were positively correlated with those of Se, indicating a great affinity between these two elements. Furthermore, dark granules of HgSe were observed in Kupffer cells in the liver by electron microscopy, suggesting the role of this macrophage in the detoxification of Hg. A transfer of Hg through placenta was proved. The presence of Hg in brain in all age classes did not show concentrations associated with neurotoxicity.

Antihypertensive effects of oleuropein-enriched olive leaf extract in spontaneously hypertensive rats.

The effects of chronic consumption of oleuropein-enriched (15% w/w) olive leaf extract (OLE) on blood pressure, endothelial function, and vascular oxidative and inflammatory status in spontaneously hypertensive rats (SHR) were evaluated. Ten Wistar Kyoto rats (WKY) and twenty SHR were randomly assigned to three groups: a control WKY group, a control SHR group and a SHR group treated with OLE (30 mg kg(-1)) for 5 weeks. Long-term administration of OLE reduced systolic blood pressure, heart rate, and cardiac and renal hypertrophy. OLE treatment reversed the impaired aortic endothelium-dependent relaxation to acetylcholine observed in SHR. OLE restored aortic eNOS phosphorylation at Ser-1177 and Thr-495 and increased eNOS activity. OLE eliminated the increased aortic superoxide levels, and reduced the elevated NADPH oxidase activity, as a result of reduced NOX-1 and NOX-2 mRNA levels in SHR. OLE reduced the enhanced vascular TLR4 expression by inhibition of mitogen-activated protein kinase (MAPK) signaling with the subsequent reduction of proinflammatory cytokines. In conclusion, OLE exerts antihypertensive effects on genetic hypertension related to the improvement of vascular function as a result of reduced pro-oxidative and pro-inflammatory status.

Deoxygenation of waste cooking oil and non-edible oil for the production of liquid hydrocarbon biofuels.

Deoxygenation of waste cooking vegetable oil and Jatropha curcas oil under nitrogen atmosphere was performed in batch and semi-batch experiments using CaO and treated hydrotalcite (MG70) as catalysts at 400 °C. In batch conditions a single liquid fraction (with yields greater than 80 wt.%) was produced containing a high proportion of hydrocarbons (83%). In semi-batch conditions two liquid fractions (separated by a distillation step) were obtained: a light fraction and an intermediate fraction containing amounts of hydrocarbons between 72-80% and 85-88% respectively. In order to assess the possible use of the liquid products as alternative fuels a complete chemical characterization and measurement of their properties were carried out.

Natural products: Perspectives in the pharmacological treatment of gastrointestinal anisakiasis.

OBJECTIVE: To evaluate the activity of different natural products against L3 larvae of Anisakis type I. METHODS: Information on investigations into the activity of natural products against the L3 larvae of Anisakis simplex was collected from scientific journals, books, theses and reports via a library and electronic search (using Pubmed, Scopus, Medline, Web of Science and ScienceDirect). The search terms included: natural products, medicinal plants, essential oils, terpenic derivatives, Anisakis, antinematodal activity. RESULTS: In the literature reviewed numerous papers were found concerning the in vitro and in vivo activity against Anisakis type I of various natural products (plant extracts, essential oils and their major components). Analysis of the results showed that in vitro tests the Melaleuca alternifolia essential oil and the ar-turmerone isolated from Curcuma longa displayed the greatest activity. In vivo, the most active compound was perillaldehyde, the main component of Perilla frutescens essential oil. CONCLUSIONS: This study shows that some natural products exhibited promising antianisakis properties.

Optimization of xanthatin extraction from Xanthium spinosum L. and its cytotoxic, anti-angiogenesis and antiviral properties.

The aqueous extraction of the sesquiterpene lactone xanthatin from Xanthium spinosum L. favours the conversion of xanthinin (1) to xanthatin (2) via the loss of acetic acid. The cytotoxic (Hep-G2 and L1210 human cell lines) and antiviral activities of isolated xanthatin are established. This natural compound shows significant cytotoxicity against the Hep-G2 cell line and our experimental results reveal its strong anti-angiogenesis capacity in vitro. The structure of xanthatin is determined by spectroscopic methods and for the first time confirmed by X-ray diffraction.

Estudio cualitativo sobre anemia y suplementación con hierro en niños desde la visión de médicos pediatras de atención primaria de Rosario, Santa Fe / Qualitative study on anemia and iron supplementation in children from the perspective of pediatricians of the primary care in Rosario, Santa Fe

INTRODUCCIÓN En los países de bajos y medianos ingresos, el 50% de las anemias son causadas por deficiencia de hierro. En Argentina, la ENNyS mostró una prevalencia de anemia en niños de 6 meses a 5 años del 16,5%, aumentando a 35% en el grupo de 6 a 23 meses. Un estudio realizado en Rosario en alrededor de 300 niños mostró una prevalencia global del 40%. Otro hallazgo inédito fue el efecto protector de la adherencia de las madres a la administración del hierro sobre el riesgo de anemia en el niño. La evidencia disponible sugiere que el impacto de la suplementación con sulfato ferroso en la población infantil de Argentina es bajo. OBJETIVOS Conocer y analizar la visión de los médicos pediatras de atención primaria de la salud (APS) de Rosario en torno a la construcción de la anemia como un problema de salud y a la suplementación con hierro por vía oral. MÉTODOS Estudio observacional, descriptivo, con recolección prospectiva y análisis cualitativo de los datos. Se realizaron entrevistas abiertas y semi-estructuradas a médicos pediatras del equipo de salud de atención primaria. La Dirección de APS de la Municipalidad de Rosario colaboró con la selección de los efectores de salud en cada distrito. RESULTADOS Todos los entrevistados coincidieron en que la anemia por déficit de hierro es un problema de salud pública. Actualmente este problema se enmarca en un contexto familiar de falta de hábitos de alimentación saludable y/o de acceso a una alimentación de calidad. Los pediatras coincidieron en que la falta de adherencia materna a la administración diaria del hierro es un obstáculo para el manejo clínico de la anemia. El sabor desagradable del sulfato ferroso sería el principal factor contribuyente a esta situación. DISCUSIÓN Los hallazgos de este estudio llevarían a elaborar nuevas hipótesis sobre la población en riesgo para la anemia. Se sugiere fortalecer los espacios sobre el crecimiento y nutrición infantil a nivel de los centros de APS y considerar la distribución gratuita de otros preparados con hierro de sabor más agradable.

Tratamiento artroscópico de las lesiones osteocondrales de astrágalo: estudio de 73 casos / Arthroscopic treatment of talus osteochondral lesions: study of 73 cases

Introducción y objetivo. El objetivo de nuestro estudio es analizar las distintas técnicas artroscópicas empleadas en el tratamiento de las lesiones osteocondrales de astrágalo. Material y método. Realizamos un estudio retrospectivo de 73 casos, intervenidos entre los años 2000 y 2011. Los pacientes se dividieron en 2 grupos: grupo A (51 pacientes), aquellos tratados mediante técnicas de estimulación osteocondral; grupo B (32 pacientes), tratados mediante técnicas de reparación. La edad media fue de 32,58 años (19-73) en el grupo A, y 36,50 años (19-58) en el grupo B. Se identifica predominio del sexo masculino y de lesiones mediales en ambos grupos. Resultados. Se evaluaron los resultados siguiendo la escala de la AOFAS de retropié, observando una mejoría clínica estadísticamente significativa (p < 0,001). Los valores preoperatorios fueron 48,77 (31-67) en el grupo A, y 58,08 (41-75) en el grupo B. Después de la intervención quirúrgica las puntuaciones ascendieron a 85,19 (60-100) en el grupo A, y 93,60 (80-100) en el grupo B. Conclusiones. La cirugía artroscópica es la técnica de elección en el tratamiento de las lesiones osteocondrales de tobillo, permite una correcta estadificación y tratamiento de las lesiones asociadas. El tratamiento artroscópico de las lesiones grado i , ii y, en ocasiones iii mediante técnicas de estimulación condral, y de lesiones grado iii y iv mediante técnicas de reparación ofrece buenos resultados con escasas complicaciones (11%) (AU)

Background and aim. The aim of our study is to analyze the different techniques used in arthroscopic treatment of talus osteochondral lesions. Material and method. We retrospectively analyzed 73 patients who underwent surgery between 2000 and 2011. Patients were divided in two groups: group A (51 patients), those treated with osteochondral stimulation techniques, and group B (32 patients), that were treated by repair techniques. The mean age was 32.58 (19-73) years in group A and 36.50 (19-58) in group B. It is identified male predominance and medial lesions in both groups. Results. Were evaluated according to the AOFAS ankle scoring scale, it is observed a statistically significant clinical improvement (P<.001). Preoperative values were 48.77 (31-67) in group A and 58.08 (41-75) in group B. After surgery scores amounted to 85.19 (60-100) in group A and 93.60 (80-100) in group B. Conclusions. Ankle arthroscopy is an excellent technique for the accurate staging of osteochondral lesions, and diagnosis and treatment of associated injuries. The arthroscopic treatment of lesions grade i , ii and sometimes iii , by stimulation techniques and chondral lesions grade iii and iv by replacement techniques, gives good results with few complications (AU)