Neurodevelopmental Disruptions in Children of Preeclamptic Mothers: Pathophysiological Mechanisms and Consequences.

Preeclampsia (PE) is a multisystem disorder characterized by elevated blood pressure in the mother, typically occurring after 20 weeks of gestation and posing risks to both maternal and fetal health. PE causes placental changes that can affect the fetus, particularly neurodevelopment. Its key pathophysiological mechanisms encompass hypoxia, vascular and angiogenic dysregulation, inflammation, neuronal and glial alterations, and disruptions in neuronal signaling. Animal models indicate that PE is correlated with neurodevelopmental alterations and cognitive dysfunctions in offspring and in humans, an association between PE and conditions such as cerebral palsy, autism spectrum disorder, attention deficit hyperactivity disorder, and sexual dimorphism has been observed. Considering the relevance for mothers and children, we conducted a narrative literature review to describe the relationships between the pathophysiological mechanisms behind neurodevelopmental alterations in the offspring of PE mothers, along with their potential consequences. Furthermore, we emphasize aspects pertinent to the prevention/treatment of PE in pregnant mothers and alterations observed in their offspring. The present narrative review offers a current, complete, and exhaustive analysis of (i) the pathophysiological mechanisms that can affect neurodevelopment in the children of PE mothers, (ii) the relationship between PE and neurological alterations in offspring, and (iii) the prevention/treatment of PE.

Design and evaluation of ZD06519, a novel camptothecin payload for antibody drug conjugates.

In recent years, the field of antibody drug conjugates (ADCs) has seen a resurgence, largely driven by the clinical benefit observed in patients treated with ADCs incorporating camptothecin-based topoisomerase I inhibitor payloads. Herein, we present the development of a novel camptothecin ZD06519 (FD1), which has been specifically designed for its application as an ADC payload. A panel of camptothecin analogs with different substituents at the C-7 and C-10 positions of the camptothecin core were prepared and tested in vitro. Selected compounds spanning a range of potency and hydrophilicity were elaborated into drug-linkers, conjugated to trastuzumab, and evaluated in vitro and in vivo. ZD06519 was selected based on its favourable properties as a free molecule and as an antibody conjugate, which include moderate free payload potency (~1 nM), low hydrophobicity, strong bystander activity, robust plasma stability, and high-monomeric ADC content. When conjugated to different antibodies using a clinically validated MC-GGFG-based linker, ZD06519 demonstrated impressive efficacy in multiple CDX models and noteworthy tolerability in healthy mice, rats, and non-human primates.

Insulin resistance and Metabolic dysfunction-associated steatotic liver disease (MASLD): Pathways of action of hypoglycemic agents.

Metabolic dysfunction-associated steatotic liver disease (MASLD) is characterized by overweight/obesity, and the presence of type 2 diabetes mellitus is the most important criterion. We propose an independent disease perspective without exclusion criteria and with less heterogeneity and greater impact because, according to the National Health and Nutrition Survey (ENSANUT), in Mexico, 25 % of adults over 60 years of age suffer from diabetes, and 96 % of those over 50 years of age have abdominal obesity. Due to the impact of insulin resistance in the pathophysiology of MASLD, which results in damage to hepatocytes, this work aims to provide an overview of the action pathways of hypoglycemic agents such as glucagon-like-1 receptor agonist and peroxisome proliferator-activated receptor-gamma agonists, whose importance lies in the fact that they are currently undergoing phase 2 studies, as well as dipeptidyl peptidase 4 inhibitors and sodium-glucose co-transporter type 2 inhibitors, which are undergoing phase 1 study trials.

Hunger & satiety signals: another key mechanism involved in the NAFLD pathway.

Non-alcoholic fatty liver disease (NAFLD) is a highly prevalent metabolic disease, although prevalence could change according to region, nowadays is considered a public health problem whose real impact on the health system is unknown. NAFLD has a multifactorial and complex pathophysiology, due to this, developing a unique and effective pharmacological treatment has not been successful in reverting or avoiding the progression of this liver disease. Even though NAFLD pathophysiology is known, all actual treatments are focused on modifying or regulating the metabolic pathways, some of which interplay with obesity. It has been known that impairments in hunger and satiety signals are associated with obesity, however, abnormalities in these signals in patients with NAFLD and obesity are not fully elucidated. To describe these mechanisms opens an additional option as a therapeutic target sharing metabolic pathways with NAFLD, therefore, this review aims to describe the hormones and peptides implicated in both hunger-satiety in NAFLD. It has been established that NAFLD pharmacological treatment cannot be focused on a single purpose; hence, identifying interplays that lead to adding or modifying current treatment options could also have an impact on another related outcome such as hunger or satiety signals.

Structure-Activity Relationships of Bis-Intercalating Peptides and Their Application as Antibody-Drug Conjugate Payloads.

Synthetic analogs based on the DNA bis-intercalating natural product peptides sandramycin and quinaldopeptin were investigated as antibody drug conjugate (ADC) payloads. Synthesis, biophysical characterization, and in vitro potency of 34 new analogs are described. Conjugation of an initial drug-linker derived from a novel bis-intercalating peptide produced an ADC that was hydrophobic and prone to aggregation. Two strategies were employed to improve ADC physiochemical properties: addition of a solubilizing group in the linker and the use of an enzymatically cleavable hydrophilic mask on the payload itself. All ADCs showed potent in vitro cytotoxicity in high antigen expressing cells; however, masked ADCs were less potent than payload matched unmasked ADCs in lower antigen expressing cell lines. Two pilot in vivo studies were conducted using stochastically conjugated DAR4 anti-FRα ADCs, which showed toxicity even at low doses, and site-specific conjugated (THIOMAB) DAR2 anti-cMet ADCs that were well tolerated and highly efficacious.

An anti-HER2 biparatopic antibody that induces unique HER2 clustering and complement-dependent cytotoxicity.

Human epidermal growth factor receptor 2 (HER2) is a receptor tyrosine kinase that plays an oncogenic role in breast, gastric and other solid tumors. However, anti-HER2 therapies are only currently approved for the treatment of breast and gastric/gastric esophageal junction cancers and treatment resistance remains a problem. Here, we engineer an anti-HER2 IgG1 bispecific, biparatopic antibody (Ab), zanidatamab, with unique and enhanced functionalities compared to both trastuzumab and the combination of trastuzumab plus pertuzumab (tras + pert). Zanidatamab binds adjacent HER2 molecules in trans and initiates distinct HER2 reorganization, as shown by polarized cell surface HER2 caps and large HER2 clusters, not observed with trastuzumab or tras + pert. Moreover, zanidatamab, but not trastuzumab nor tras + pert, elicit potent complement-dependent cytotoxicity (CDC) against high HER2-expressing tumor cells in vitro. Zanidatamab also mediates HER2 internalization and downregulation, inhibition of both cell signaling and tumor growth, antibody-dependent cellular cytotoxicity (ADCC) and phagocytosis (ADCP), and also shows superior in vivo antitumor activity compared to tras + pert in a HER2-expressing xenograft model. Collectively, we show that zanidatamab has multiple and distinct mechanisms of action derived from the structural effects of biparatopic HER2 engagement.

Oral squamous cell carcinoma in coca chewers from a north region of Argentina: A case series and review of literature.

Chewing coca leaves is a habit still practiced in Bolivia, Peru and Argentina. There is scarce evidence in the relationship between this habit and development of oral squamous cell carcinoma (OSCC), some authors have found oral epithelial changes in coca chewers. This study aimed to present a case series of patients with a coca chewing habit that developed OSCC, in the absence of risk factors for oral cancer. Patients were evaluated in Hospital Señor del Milagro, Salta, Argentina. None of them had a relevant morbid history and presented intraoral tumors, with an ulcerated surface on the gingivobuccal complex. Coca chewing habit was recorded in all cases. Present cases could start discussions and new lines of researches focusing on the habit of coca leaves chewing as a risk factor for OSCC. It would be very useful to know the underlying mechanisms between this habit and a possible role in oral carcinogenesis.

Implementation of the Theoretical Coulometric Titration Curve in the Determination of the Amount of Substance of Potassium Hydrogen Phthalate: the Search for a Better Metrological Approach.

In metrology, the certification of potassium hydrogen phthalate (KHP) as a reference material is made using the potential primary method of coulometric titration. Usually, this titration is performed in three steps at constant current, where two endpoint (EP) times are determined from the nonlinear regression that fits the empirical W-function (eWf) to the experimental data. As an alternative, we propose the implementation of the theoretical coulometric titration curve (TC). The TC allowed us to compute the KHP amount of substance, the influence of CO2 in the system, the acid dissociation constants for carbonic and phthalic acids, assuming that those species are the only acids present during titration, and the EP times. The amount of substance of KHP estimated with the EP time and obtained from the TC was compared with the results of the eWf, and no statistical difference was found, while the amount of substance, when estimated directly as a parameter of the nonlinear regression of the TC, was lower. Therefore, the traditional method finds the total acidity of the dissolution, and our method finds the KHP purity. In addition, the acid dissociation constants for H2CO3 and phthalic acid estimated in this work agreed with the data reported in the literature. Finally, the description of the coulometric system using the theoretical TC has a solid and well-known chemical support that is not present in the eWf; this fact is essential for the uncertainty budget and the scientific support for coulometry as a potential primary method.

Relative Humidity Predicts Day-to-Day Variations in COVID-19 Cases in the City of Buenos Aires.

Possible links between the transmission of COVID-19 and meteorology have been investigated by comparing positive cases across geographical regions or seasons. Little is known, however, about the degree to which environmental conditions modulate the daily dynamics of COVID-19 spread at a given location. One reason for this is that individual waves of the disease typically rise and decay too sharply, making it hard to isolate the contribution of meteorological cycles. To overcome this shortage, we here present a case study of the first wave of the outbreak in the city of Buenos Aires, which had a slow evolution of the caseload extending along most of 2020. We found that humidity plays a prominent role in modulating the variation of COVID-19 positive cases through a negative-slope linear relationship, with an optimal lag of 9 days between the meteorological observation and the positive case report. This relationship is specific to winter months, when relative humidity predicts up to half of the variance in positive case count. Our results provide a tool to anticipate possible local surges in COVID-19 cases after events of low humidity. More generally, they add to accumulating evidence pointing to dry air as a facilitator of COVID-19 transmission.

Pharmacological Inhibition of S-Nitrosoglutathione Reductase Reduces Cardiac Damage Induced by Ischemia-Reperfusion.

The cardioprotective effects of nitric oxide (NO) have been described through S-nitrosylation of several important proteins in the mitochondria of the cardiomyocyte. S-nitrosoglutathione reductase (GSNOR) is an enzyme involved in the metabolism of S-nitrosothiols by producing denitrosylation, thus limiting the cardioprotective effect of NO. The effect of GSNOR inhibition on the damage by cardiac ischemia-reperfusion is still unclear. We tested the hypothesis that pharmacological inhibition of GSNOR promotes cardioprotection by increasing the levels of protein S-nitrosylation. In a model of ischemia-reperfusion in isolated rat heart, the effect of a GSNOR inhibitor, 5-chloro-3-(2-[4-ethoxyphenyl) (ethyl) amino]-2-oxoethyl)-1H-indole-2-carboxylic acid (C2), was investigated. Ventricular function and hemodynamics were determined, in addition to tissue damage and S-nitrosylation of mitochondrial proteins. Hearts treated with C2 showed a lower release of myocardial damage marker creatine kinase and a reduction in the infarcted area. It also improved post-ischemia ventricular function compared to controls. These results were associated with increasing protein S-nitrosylation, specifically of the mitochondrial complexes III and V. The pharmacological inhibition of GSNOR showed a concentration-dependent cardioprotective effect, being observed in functional parameters and myocardial damage, which was maximal at 1 µmol/L, associated with increased S-nitrosylation of mitochondrial proteins. These data suggest that GSNOR is an interesting pharmacological target for cardiac reperfusion injury.

Atmospheric pressure air microplasma current time series for true random bit generation.

Generating true random bits of high quality at high data rates is usually viewed as a challenging task. To do so, physical sources of entropy with wide bandwidth are required which are able to provide truly random bits and not pseudorandom bits, as it is the case with deterministic algorithms and chaotic systems. In this work we demonstrate a reliable high-speed true random bit generator (TRBG) device based on the unpredictable electrical current time series of atmospheric pressure air microplasma (APAMP). After binarization of the sampled current time series, no further post-processing was needed in order for the bitstreams to pass all 15 tests of the NIST SP 800-22 statistical test suite. Several configurations of the system have been successfully tested at different sampling rates up to 100 MS/s, and with different inter-electrode distances giving visible/non-visible optical emissions. The cost-effectiveness, simplicity and ease of implementation of the proposed APAMP system compared to others makes it a very promising solution for portable TRBGs.

Estado nutricional de niños con estenosis esofágica secundaria a quemadura por cáusticos, alimentados por gastrostomía en el Hospital Civil de Guadalajara.

BACKGROUND: The ingestion of caustic substances constitutes a serious problem in the pediatric age that can cause injuries in the esophagus that may require oral feeding. Gastrostomy nutrition is a safe way to guarantee an adequate evolution of the nutritional status, as well patient's growth and development. OBJECTIVE: To evaluate the nutritional status of children with esophageal stenosis, secondary to caustic ingestion, after 6 months of gastrostomy placement as a feeding route. METHOD: A descriptive, longitudinal ambispective study was carried out, with a sample of 20 patients. Nutritional status before and after gastrostomy placement; was obtained through anthropometric measurements and pediatric indexes. Statistical analysis: t-test. RESULTS: The anthropometric indexes of W/A and BMI/A reflect a statistically significant improvement in nutritional status over 6 months of gastrostomy treatment, but not for H/A. CONCLUSION: The nutritional status evolves adequately from gastrostomy management in these patients.

ANTECEDENTES: La ingestión de cáusticos constituye un problema grave en la edad pediátrica que puede ocasionar lesiones en el esófago que imposibiliten la alimentación vía oral. La nutrición por gastrostomía resulta una vía segura para garantizar una evolución adecuada del estado nutricional, así como favorecer el crecimiento y el desarrollo del paciente. OBJETIVO: Evaluar el estado nutricional de niños con estenosis esofágica secundaria a ingestión de cáusticos, posterior a 6 meses de la colocación de gastrostomía como vía de alimentación. MÉTODO: Estudio descriptivo, longitudinal, ambispectivo, con una muestra de 20 pacientes. El estado nutricional previo y posterior a la colocación de gastrostomía se obtuvo mediante mediciones antropométricas e índices pediátricos. Análisis estadístico: t de Student. RESULTADOS: Los índices antropométricos de peso para la edad (P/E) e índice de masa corporal para la edad (IMC/E) reflejan una mejoría estadísticamente significativa en el estado nutricional a lo largo de 6 meses de tratamiento con gastrostomía, no siendo así para la talla para la edad (T/E). CONCLUSIONES: El estado nutricional evoluciona adecuadamente a partir del manejo con gastrostomía en estos pacientes.

Macrophage migration inhibitory factor gene polymorphisms as exacerbating factors of apical periodontitis.

BACKGROUND: Two polymorphisms in the macrophage migration inhibitory factor (MIF) gene have been associated with inflammatory diseases (-794 CATT5-8 and -173G>C); however, so far there are no reports of studies related to oral health. OBJECTIVES: To genotype the -794 CATT5-8 and -173G>C MIF polymorphisms in Mexican patients with apical periodontitis as a genetic risk of exacerbation. MATERIAL AND METHODS: The study involved 120 patients with apical periodontitis: 60 with a diagnosis of acute apical periodontitis (Group A) and 60 without previous episodes of exacerbation (Group B). Allelic discrimination was performed from peripheral blood DNA; the repeat polymorphism -794 CATT5-8 was genotyped with sequencing, while the -173G>C polymorphism was determined using real-time polymerase chain reaction (RT-PCR) using TaqMan probes. The associations between MIF polymorphisms, haplotypes and the risk of exacerbated apical periodontitis were assessed. RESULTS: The allele CATT7 was associated with the risk of a stage of acute inflammation (OR = 4.13; 95% CI = 1.82-9.63; p =< 0.001). Regarding the -173G >C polymorphism, a process of inflammation exacerbation was only associated with the CC genotype (OR = 4.1; 95% CI = 1.02-20.84; p = 0.045). The analysis of the haplotype showed that the combination CATT7/C increases the risk of exacerbation of apical periodontitis (OR = 3.57; 95% CI = 1.038-13.300; p = 0.021). CONCLUSIONS: The polymorphisms -794 CATT5-8 and -173G>C MIF seem to significantly influence the development of a state of exacerbated inflammation in patients with apical periodontitis.

Maternal risk factors in full-term newborns with early onset sepsis related with Interleukin-6 in umbilical blood / Factores de riesgo maternos en recién nacidos a término con sepsis de aparición temprana relacionada con interleucina-6 en sangre umbilical

Objective: to determine the relationship and association of early sepsis with interleukin- 6 measured in umbilical blood, as well as gestational age and birth weight, prenatal history of the mother pathologies during pregnancy, in newborns at the Neonatology Service of Carlos Andrade Marín Hospital (Quito). Material and methods: epidemiological, observational, analytical, cross-sectional. 200 newborns were analyzed. IL-6 was determined by Elisa. Results: newborn mean gestational age 38.4±2 weeks, mean weight 2871±532.4 grams, cutoff point interleukin 6 ≤14pg/uL; male sex was 43.9%, female sex 56.1%; preeclampsia of the mother 22.4%, infection of the urinary tract during pregnancy 20.4%; vaginitis/vaginosis 19.4%; IL6 values ≤ 14 pg/uL in 63.3% of patients; IL6 values of >14 pg/uL 36.7%; relationship with sepsis in all, p<0.05; relationship of prenatal pre-maternity of the mother and neonatal sepsis, p<0.05; relationship between vaginitis/vaginosis of the mother with neonatal sepsis; p<0.05; OR: 38.88 IC95% (4.912-307.728); association between sepsis and risk factors, IL6, gestational age in weeks, weight, prenatal preeclampsia and urinary tract infection, vaginitis/vaginosis, p<0.05. Conclusion: it is concluded that there is a correlation of risk factors, such as gestational age in weeks, weight, prenatal preeclampsia, UTI prior to birth, vaginitis/vaginosis, and values of interleukin 6 ≤ 14 pg/uL. The mean gestational age was 38.4 weeks, and average weight 2871 grams in the newborns analyzed..(AU)

Objetivo: determinar la relación de sepsis temprana con interleucina 6 medida en sangre umbilical, así como la edad gestacional y el peso al nacer, antecedentes prenatales de patologías maternas durante el embarazo, en recién nacidos en el Servicio de Neonatología del Hospital Carlos Andrade Marín (Quito). Material y métodos: estudio epidemiológico, observacional, analítico, transversal. Se analizaron 200 recién nacidos. La IL-6 fue determinada por Elisa. Resultados: edad gestacional promedio del recién nacido 38.4±2 semanas, peso promedio 2871±532.4 gramos, punto de corte interleucina 6 ≤14pg/uL; el sexo masculino fue del 43,9%, el sexo femenino del 56,1%; preeclampsia de la madre 22.4%, infección del tracto urinario durante el embarazo 20.4%; vaginitis/vaginosis 19,4%; Valores promedio de IL6 ≤14 pg/uL en el 63,3% de los pacientes; valores de IL6 de> 14 pg/uL en 36.7% de pacientes; relación con sepsis en total, p<0.05; relación de la pre-maternidad prenatal de la madre y sepsis neonatal con p <0.05; relación entre vaginitis/vaginosis de la madre con sepsis neonatal con p<0.05; OR (verosimilitud): 38,88 IC95% (4.912-307.728); asociación entre sepsis y factores de riesgo, IL6, edad gestacional en semanas, peso, preeclampsia prenatal e infección del tracto urinario, vaginitis/vaginosis, p <0,05. Conclusión: se concluye que existe correlación de factores de riesgo como la edad gestacional en semanas, el peso, la preeclampsia prenatal, la infección de vías urinarias antes del nacimiento, la vaginitis/vaginosis y los valores de interleucina 6 ≤1 4 pg/uL. La edad gestacional media fue de 38,4 semanas y el peso promedio de 2871 gramos en los recién nacidos analizados..(AU)

Dickkopf-1 reduces hypertrophic changes in human chondrocytes derived from bone marrow stem cells.

The in vitro process of chondrogenic differentiation of mesenchymal stem cells (MSCs) induces a pre-apoptotic hypertrophic phenotype, guided by the active status of the WNT/߭catenin pathway. To achieve a stable chondrocyte phenotype for cartilage tissue engineering, it is necessary to gain a better understanding of specific genes that regulate the cartilage tissue phenotype. RNA sequencing (RNA-seq) analysis of tissue samples from bone, cartilage, growth plate and muscle show that Dickkopf-1 (DKK1), a natural WNT canonical signaling inhibitor, is expressed in cartilage tissue. This observation reinforces the concept that inhibition of the WNT/߭catenin pathway is critical for preventing avoid chondrocyte hypertrophy in vitro. We used two doses of DKK1 in a pellet cell culture system to inhibit the terminal differentiation of chondrocytes derived from bone marrow mesenchymal stem cells (MSCs). Bone marrow MSCs were cultured in chondrogenic induction medium with 50 and 200 ng/ml of DKK1 for 21 days. The highest doses of DKK1 reduce ߭catenin expression and nuclear localization at day 21, concomitant with reduced expression and activity of hypertrophy markers collagen type X (COL10A1) and alkaline phosphatase (ALPL), thus decreasing the pre-hypertrophic chondrocyte population. Furthermore, DKK1 stimulated expression of collagen type II (COL2A1) and glycosaminoglycans (GAGs), which represent healthy articular cartilage markers. We conclude that exogenous DKK1 impedes chondrocyte progression into a prehypertrophic stage and stimulates expression of healthy articular cartilage markers by blocking the WNT/߭catenin pathway. Hence, DKK1 may promote a mature healthy articular cartilage phenotype and facilitate cartilage tissue engineering for joint repair.

Entrenamiento en Conducta Pro- Social y Asertiva en Observadores de Bullying escolar / Training in Pro-Social and Assertive Behavior in School Bullying Observers

El estudio permite identificar el efecto del entrenamiento a observadores en conductas pro-sociales y asertivas en el bullying escolar en un colegio de la ciudad de Bogotá ubicado en la localidad de Bosa. Se tomaron 64 estudiantes entre 12-14 años de 6°, 7° y 8°grado de secundaria, seleccionados mediante muestreo por conglomerados. El diseño fue cuasi-experimental pre-test pos-test con grupo control. Se aplicó el Cuestionario sobre Intimidación y Maltrato entre Iguales- INSEBULL (Avilés y Elices, 2007) seleccionando la población y homogenizando los grupos, se vincularon participantes mediante asignación aleatoria en grupos. Se aplicó la Escala de habilidades pro-sociales para adolescentes EHPA (Morales y Suárez, 2011) y la Escala de comportamiento asertivo para niños (CABS) (Wood, 1978), a partir de lo anterior se desarrolló el entrenamiento al GE, evaluándolo a través del pos-test del INSEBULL, EPHA y CABS. Los resultados permiten rechazar la hipótesis de trabajo establecida para el estudio, y se acepta la hipótesis nula, la cual especifica que el entrenamiento en observadores en conductas pro-sociales y asertivas no establece diferencias significativas en sus medidas, por lo cual no se observa cambios en la dinámica del fenómeno del Bullying Escolar

The study allows us to identify the effect of observer training on pro-social and assertive behaviors in school bullying in a school in the city of Bogotá located in the town of Bosa. 64 students were taken between 12-14 years of 6th, 7th and 8th grade of high school, selected by sampling by conglomerates. The design was quasi-experimental pre-test post-test with control group. The Questionnaire on Intimidation and Maltreatment between Equals was applied- INSEBULL (Avilés & Elices, 2007) selecting the population and homogenizing the groups, participants were linked by random assignment in groups. The Scale of pro-social skills for adolescents EHPA (Morales & Suárez, 2011) and the Assertive Behavior Scale for Children (CABS) (Wood, 1978) was applied, from the above the GE training was developed, evaluating it through the post-test of the INSEBULL, EPHA and CABS. The results allow to reject the hypothesis of work established for the study, and the null hypothesis is accepted, which specifies that the training in observers in pro-social and assertive behaviors does not establish significant differences in their measurements, for which no changes are observed. in the dynamics of the phenomenon of School Bullying

Polimorfismo rs17817449 del gen FTO y su influencia en variables antropométricas de jóvenes chilenos / rs17817449 polymorphism of the fto gene and its influence on anthropometric variables of young Chileans

Determinar la distribución genotípica y la frecuencia alélica del polimorfismo rs17817449 del gen FTO en jóvenes chilenos y su influencia en variables antropométricas. Los 96 sujetos jóvenes (18-25 años), 43 hombres y 53 mujeres fueron evaluados utilizando genotipificación del polimorfismo rs17817449 del gen FTO en TT, TG y GG mediante polimerase chain reaction (PCR), además de una evaluación Kinenatropométrica para determinar las variables asociadas a composición corporal. Las variables fueron analizadas estadísticamente según su distribución paramétrica y el nivel de significancia estadística fue p<0,05. La distribución genotípica del polimorfismo rs17817449 de FTO en jóvenes chilenos fue: TT: 50 %; TG: 42,7 %; GG 7,3 % y la distribución alélica fue: T: 0,7105 y G: 0,2895. No se encontraron diferencias estadísticamente significativas en las variables antropométricas al analizar los participantes según modelo de dominancia del alelo G. Se determinó la distribución genotípica y la frecuencia alélica del polimorfismo rs17817449 del gen FTO en jóvenes chilenos, datos desconocidos hasta este momento. De acuerdo a nuestros resultados, no existen diferencias antropométricas entre personas con diferentes genotipos del polimorfismo rs17817449 de FTO, agrupadas según modelo de dominancia del alelo G.

The rs17817449 polymorphism of the FTO gene in young Chileans and their influence on anthropometric variables. 96 young subjects (18-25 years old), 43 men and 53 women were evaluated using genotyping of the rs17817449 polymorphism of the FTO gene in TT, TG and GG by means of polymerase chain reaction (PCR), in addition to a Kinenatropometric evaluation to determine the variables associated with body composition. The variables were analyzed statistically according to their parametric distribution and the level of statistical significance was p<0.05. The genotypic distribution of the FTO polymorphism rs17817449 in young Chileans was: TT: 50 %; TG: 42.7 %; GG 7.3 % and the allelic distribution was: T: 0.7105 and G: 0.2895. No statistically significant differences were found in the anthropometric variables when analyzing the participants according to model of dominance of the G allele. The genotypic distribution and the allelic frequency of the rs17817449 polymorphism of the gene were determined FTO in Chilean population, data unknown until now. According to our results, there are no anthropometric differences between people with different genotypes of the FTO polymorphism rs17817449, nor according to the dominance model of the G.