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Introduction: Fracture-dislocations of the proximal interphalangeal joint (PIPJ) can have a significant impact on digital motion and hand function if inappropriately treated. While these injuries are commonly encountered, they can be quite challenging to manage. It is critical to ensure a concentric reduction and early motion when treating these injuries. Case Report: A 17-year-old woman sustained a fracture-dislocation of the PIPJ of the left small finger. Despite a concentric closed reduction, she had pain and a mechanical block to PIPJ motion. Advanced imaging revealed volar plate entrapment in the retrocondylar space. She was treated with open reduction and direct volar plate repair. Postoperatively, the patient had an excellent outcome with no complications. Conclusion: Our case highlights the importance of both performing an anesthetized examination and investigating the etiology of any limitations to motion even if there is an initial acceptable closed reduction.

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Selective anion sensing by luminescent chemosensors capable of operating in aqueous conditions is a central field of modern supramolecular chemistry that impacts analytical and biological chemistry. A cationic cyclometalated [Pt(N^C^N)NCCH3]OTf complex, 1 [N^C^N = 1,3-bis(1-(p-tolyl)-benzimidazol-2'-yl)benzene, OTf = triflate], was prepared, structurally described by single-crystal X-ray diffraction and studied in-depth as a luminescent chemosensor for anions in aqueous phase and solid state. A series of related neutral [Pt(N^C^N)X] complexes (X = Cl, 2; CN, 3 and I, 4) were formed readily upon treatment of 1 with the respective NaX salt in aqueous media and were described structurally by X-ray diffraction. Complex 1 is hydrostable with phosphorescent green emission originated by intraligand transitions, and [dyz(Pt) → π*(N^C^N)] charge transfer transitions, as evidenced by TD-DFT calculations and lifetime. Additions of halides, pseudohalides, oxyanions, and dicarboxylates to a neutral aqueous solution of 1 modified its green emission intensity with a pronounced affinity (K = 1.5 × 105 M-1) and turn-on signal toward Cl- within the micromolar concentration range. Pt complex 1 is two orders of magnitude more selective for Cl- than the other halides, CN- and basic oxyanions. Such Cl- affinity for a metal-based chemosensor in aqueous media is still rare. On the basis of X-ray crystallographic analysis and multiple spectroscopic tools (NMR, UV-vis, luminescence, MS, lifetimes) the origin of this selectivity hinges on the cooperative three-point recognition involving one coordination bond (Pt-Cl) and two convergent short C-H···Cl- contacts. This strong affinity and efficient optical response can be utilized in quantitative Cl- sensing in real samples and solid-liquid extractions. Additionally, chloro-Pt complex, 2 may be relevant to bioimaging as a marker for cell nuclei, as revealed by its emission within living cells and intracellular distribution by confocal microscopic studies. These results demonstrate the usefulness of the new water-stable luminescent Pt-N^C^N complexes as effective analytical tools in anion sensing and extraction agents.

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Gender-based violence (GBV) and cyber-aggression are growing problems in Mexico, but there is a dearth of information on their associated risks. We aimed to determine the prevalence of dating violence (DV) and cyber-aggression in a public campus and compared students' acceptability of abusive DV based on their sex and sexual orientation. We employed a cross-sectional design to survey 964 first-year medical students attending a public university. We analyzed who found "acceptable" abusive behaviors from a dating partner and carried out descriptive analyses of sample characteristics by sex. We included 633 women and 331 men. Homosexual and bisexual orientation was lower among women (1.5%, 4.8%) vs. men (16.9%, 7.2%). Of women and men, respectively, 64.2% and 35.8% reported having been in a dating relationship. Experiencing abusive behaviors in the year prior to the study was associated with students' level of "acceptability". A total of 43.5% of the students who experienced cyber-aggression did not report any mental health consequences, 32.6% did not seek professional help, and 17.4% reported feeling depressed. Students that accepted emotionally abusive DV behaviors displayed a fourfold risk of experiencing physical abuse. Women and sexual minorities are more at risk of experiencing GBV and DV. More male students reported being victims of cyber-aggression.

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El labio/paladar hendido (LPH), se produce debido a la falta de la fusión de numerosos procesos faciales durante las primeras semanas del desarrollo embrionario. El uso de ortopedia prequirúrgica nos ayuda a corregir el colapso óseo que los pacientes con LPH pueden presentar, así como estimular el crecimiento de los segmentos palatinos iniciando su uso en las primeras horas de vida. Debido a la pandemia ocasionada por COVID, muchos pacientes no recibieron atención, generando una necesidad de tratamiento enfocado en sus características. Objetivo. Generar desarrollo transversal en un paciente masculino de 1 año de vida y rotar el segmento maxilar izquierdo para conformar el arco, y así, favorecer el pronóstico de la cirugía del paciente con labio y paladar hendido sin queiloplastia al año de vida. Presentación del caso. Paciente masculino con labio y paladar hendido sin queiloplastia al año de vida se presenta a clínica de labio paladar hendido TiENES que sonreír, UNAMos esfuerzos. Refiere haber sido tratado con ortopedia prequirúrgica. Clínicamente se observa labio paladar hendido, además del segmento maxilar izquierdo colapsado, generando una falta de continuidad y perímetro de arco. La fase de tratamiento consistió en una placa removible unida en su parte central por tres helix, para rotar el segmento maxilar izquierdo. Resultados. Se generó un desarrollo maxilar adecuado y se conformó el arco. Conclusiones. Es importante resaltar las características de cada caso para así poder generar un plan de tratamiento apto a las necesidades del paciente, ya que esto mejora el pronóstico postquirúrgico.

A fissura labiopalatina (FLP) ocorre devido à falta de fusão de numerosos processos faciais durante as primeiras semanas de desenvolvimento embrionário. O uso da ortopedia pré-cirúrgica nos ajuda a corrigir o colapso ósseo que os pacientes com FLP podem apresentar, bem como estimular o crescimento dos segmentos palatinos iniciando seu uso nas primeiras horas de vida. Devido à pandemia causada pela COVID, muitos pacientes não receberam atendimento, gerando necessidade de tratamento focado em suas características. Mirar. Gerar desenvolvimento transversal em paciente do sexo masculino com 1 ano de idade e girar o segmento maxilar esquerdo para formar o arco, e assim, favorecer o prognóstico da cirurgia para o paciente com fissura labiopalatina sem queiloplastia com um ano de idade. Apresentação do caso. Paciente do sexo masculino com fissura labiopalatina sem queiloplastia com um ano de idade se apresenta na clínica de fissura labiopalatina VOCÊ TEM QUE SORRIR, JUNTE-SE A NÓS Esforços. Relata ter sido tratado com ortopedia pré-cirúrgica. Clinicamente observa-se fissura labiopalatina, além do segmento maxilar esquerdo colapsado, gerando falta de continuidade e perímetro do arco. A fase de tratamento consistiu em uma placa removível unida em sua parte central por três hélices, para rotação do segmento maxilar esquerdo. Resultados. O desenvolvimento maxilar adequado foi gerado e o arco foi formado. Conclusões. É importante destacar as características de cada caso para gerar um plano de tratamento adequado às necessidades do paciente, pois isso melhora o prognóstico pós-cirúrgico

Cleft lip/palate (CLP) occurs due to the lack of fusion of numerous facial processes during the first weeks of embryonic development. The use of presurgical orthopedics helps us correct the bone collapse that patients with CLP may present, as well as stimulate the growth of the palatal segments by starting its use in the first hours of life. Due to the pandemic caused by COVID, many patients did not receive care, generating a need for treatment focused on their characteristics. Aim. Generate transverse development in a 1-year-old male patient and rotate the left maxillary segment to form the arch, and thus, favor the prognosis of surgery for the patient with cleft lip and palate without cheiloplasty at one year of age. Presentation of the case. Male patient with cleft lip and palate without cheiloplasty at one year of age presents to cleft lip and palate clinic. YOU HAVE TO SMILE, JOIN US Efforts. He reports having been treated with pre-surgical orthopedics. Clinically, a cleft lip and palate is observed, in addition to the collapsed left maxillary segment, generating a lack of continuity and arch perimeter. The treatment phase consisted of a removable plate joined in its central part by three helixes, to rotate the left maxillary segment. Results. Adequate maxillary development was generated and the arch was formed. Conclusions. It is important to highlight the characteristics of each case in order to generate a treatment plan suitable for the patient's needs, since this improves the postsurgical prognosis.

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An elderly person who lives alone must often be autonomous and self-sufficient in daily living activities. We explored if living alone and marital status were associated with mild cognitive impairment and low cognitive reserve in a sample of Mexican women aged 60+ attending continuing education courses using a cross-sectional design. Objective cognitive functions were assessed using the MMSE and Blessed Dementia Scale. We administered the Cognitive Reserve Questionnaire. Independence skills were assessed with the Katz index and Lawton index. Multivariate logistic regression analysis was used. We recruited 269 participants (x¯ = 69.0 ± 5.8 years). Single, widowed, separated, and divorced women comprised 73% of the participants. A third lived alone and 84% had completed high school. Mild cognitive deficit was observed among 24.5-29.0%; the upper range for cognitive reserve was 61.7%. Living alone versus living with someone was associated with cognitive impairment (OR = 0.51, p = 0.04) and with low to medium cognitive reserve (OR = 0.51, p = 0.02) after adjusting for confounding variables. Living alone was an independent factor associated with a lower probability of displaying mild cognitive impairment and a higher probability of displaying high cognitive reserve. Women living alone in this study had a more robust cognitive framework and had built their own support networks.

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In the present study we evaluate the population structure and potential colonization routes of the silverside Chirostoma humboldtianum through approximate Bayesian computations. Six microsatellite loci were amplified in a total of 288 individuals from six different locations covering the complete geographic distribution of the species. Additionally, two mitochondrial DNA markers, a D loop control region and cytochrome b were amplified in a subset of 107 individuals. The results found with microsatellites allow recovering well-structured populations that have experienced a drastic reduction in the effective population size. On the other hand, mtDNA sequences showed a moderate phylogeographic structure with shared haplotypes between geographic localities and signalsof a slight increase in the effective population size. Finally, the approximate Bayesian computation analysis performed with both datasets suggested a west-to-east colonization route for the species in Central Mexico.

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The populations of Humboldtiana durangoensis have experienced a drastic reduction in the effective population size; in addition, the species is threatened by anthropogenic activities. For the aforementioned, landscape genetics will serve as a tool to define the potential evolutionarily significant units (ESU) for this species. To complete our objective, we evaluated the effect of cover vegetation and climate on the functional connectivity of the species from the last glacial maximum (LGM) to the present as well as the effect of climate on shell shape. Partial Mantel tests, distance-based redundance analysis and a Bayesian framework were used to evaluate connectivity. On the other hand, geometric morphometrics, phylogenetic principal component analysis and redundancy analysis were used for the analysis of shell shape. Our results suggest that the suitable areas have been decreasing since the LGM; also, vegetation cover rather than climate has influenced the genetic connectivity among land snail populations, although temperature had a high influence on shell shape in this species. In conclusion, vegetation cover was the main factor that determined the functional connectivity for the land snail; however, local selective pressures led to different phenotypes in shell shape that allowed us to postulate that each one of the previously defined genetic groups must be considered as a different ESU.

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Using molecular dated phylogenies and biogeographic reconstructions, the species diversity, biogeography and time frame of evolution of the genus Herichthys were evaluated. In particular, we test the role of Punta del Morro (PdM) as a vicariant brake along the Mexican Transition Zone in the context of local and global time frame of cichlid diversification using several sets of calibrations. Species diversity in Herichthys is complex and the here employed dating methods suggest young age and rapid divergence for many species while species delimitation methods did not resolve these young species including both sympatric species pairs. Based on our molecular clock dating analyses, Herichthys has colonized its present distribution area significantly prior to the suggested vicariance by PdM (10-17.1 Ma vs. 5 to 7.5 Ma). The PdM constraint is in conflict with all other paleogeographic and fossil constraints including novel ones introduced in this study that are, however, congruent among each other. Our study demonstrates that any cichlid datings significantly older or younger than the bounds presented by our analyses and discussion have to be taken as highly questionable from the point of view of Middle American paleogeography and cichlid biogeography unless we allow the option that cichlid biogeography is completely independent from ecological and geological constraints.

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Compared with South America, there is a lack of epidemiologic studies about the risk of congenital transmission of Trypanosoma cruzi in Central America and Mexico. It has been suggested that T. cruzi genotypes might differ by region and that congenital transmission might vary according to the parasite's genotype. Our objective was to compare T. cruzi congenital transmission rates in three countries. We performed an observational prospective study in 2011-2014 enrolling women at delivery in one hospital in Argentina, two hospitals in Honduras, and two hospitals in Mexico. Congenital T. cruzi infection was defined as the presence of one or more of the following criteria: presence of parasites in cord blood (direct parasitological microscopic examination) with positive polymerase chain reaction (PCR) in cord blood, presence of parasites in infant's blood at 4-8 weeks (direct parasitological microscopic examination), and persistence of T. cruzi-specific antibodies at 10 months, as measured by at least two tests. Among 28,145 enrolled women, 347 had at least one antibody rapid test positive in cord blood and a positive enzyme-linked immunosorbent assay in maternal blood. PCR in maternal blood was positive in 73.2% of the cases, and genotyping identified a majority of non-TcI in the three countries. We found no (0.0%; 95% confidence interval [CI]: 0.0, 2.0) confirmed congenital case in Honduras. Congenital transmission was 6.6% (95% CI: 3.1, 12.2) in Argentina and 6.3% (95% CI: 0.8, 20.8) in Mexico. Trypanosoma cruzi non-TcI predominated and risks of congenital transmission were similar in Argentina and Mexico.

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In this paper evidence of anthropogenic influence over the warming of the 20th century is presented and the debate regarding the time-series properties of global temperatures is addressed in depth. The 20th century global temperature simulations produced for the Intergovernmental Panel on Climate Change's Fourth Assessment Report and a set of the radiative forcing series used to drive them are analyzed using modern econometric techniques. Results show that both temperatures and radiative forcing series share similar time-series properties and a common nonlinear secular movement. This long-term co-movement is characterized by the existence of time-ordered breaks in the slope of their trend functions. The evidence presented in this paper suggests that while natural forcing factors may help explain the warming of the first part of the century, anthropogenic forcing has been its main driver since the 1970's. In terms of Article 2 of the United Nations Framework Convention on Climate Change, significant anthropogenic interference with the climate system has already occurred and the current climate models are capable of accurately simulating the response of the climate system, even if it consists in a rapid or abrupt change, to changes in external forcing factors. This paper presents a new methodological approach for conducting time-series based attribution studies.

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