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Several cases of elastofibromatous lesion affecting the oral mucosa have been reported. Clinically, these lesions may appear as small exophytic lesions or less often as white lesions. Therefore, fibrous hyperplasia and leukoplakia are not uncommonly considered in clinical differential diagnosis. Microscopically, elastic and fibrous connective tissue deposition is seen. Rarely, elastofibromatous changes can be detected when assessing intraoral lesions, including cysts, salivary gland neoplasms, and epithelial dysplasia. Here we report two oral lesions showing elastofibromatous changes, expanding their clinicopathological spectrum. The first case was a 46-year-old man with a history of asymptomatic nodular lesion on the palate 1 year ago, diagnosed as giant cell fibroma with elastofibromatous changes. The second case was a 79-year-old woman who presented a pigmented and mildly symptomatic lesion on the mandibular alveolar mucosa several months ago, diagnosed as amalgam tattoo associated with elastofibromatous changes.

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Boletes are one of the most common groups of fungi in temperate, subtropical, and tropical ecosystems. In Mexico, the northern region has mainly been explored in terms of bolete diversity. This study describes a new genus and seven new species based on macromorphological, micromorphological, molecular, phylogenetic, and ecological data. Garcileccinum gen. nov. is typified with G. salmonicolor based on multigene phylogenetic analysis of nrLSU, RPB2, and TEF1, and it is closely related to Leccinum and Leccinellum. Garcileccinum viscosum and G. violaceotinctum are new combinations. Boletellus minimatenebris (ITS, nrLSU, and RPB2), Cacaoporus mexicanus (RPB2 and ATP6), Leccinum oaxacanum, Leccinum juarenzense (nrLSU, RPB2, and TEF1), Tylopilus pseudoleucomycelinus (nrLSU and RPB2), and Xerocomus hygrophanus (ITS, nrLSU, and RPB2) are described as new species. Boletus neoregius is reclassified as Pulchroboletus neoregius comb. nov. based on morphological and multigene phylogenetic analysis (ITS and nrLSU), and its geographic distribution is extended to Central Mexico, since the species was only known from Costa Rica. Furthermore, T. leucomycelinus is a new record from Mexico. This study contributes to increasing our knowledge of boletes and expands the diversity found in Mexican forests.

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Actinomycosis is an uncommon, subacute to chronic, suppurative bacterial infection caused by Actinomyces Israelii. About 3% of all actinomycosis cases occur in the tongue, often affecting adult patients (mean age, 50 years). The clinical characteristics of actinomycosis can resemble malignant or benign tumors, and other infectious diseases. A 56-year-old woman was referred presenting an ulcerated lesion on the tongue 1 year ago. Intraoral examination revealed an edematous nodular lesion with an ulcerated surface, slightly symptomatic, on the midline dorsum of posterior tongue, suggesting nodular median rhomboid glossitis. Cytology smear was negative for fungus. After excisional biopsy, histopathological examination showed a chronic inflammatory infiltrate supported by a fibrovascular connective tissue stroma, and at the deepest part, broad basophilic areas surrounded by neutrophils, containing numerous filamentous bacilli, which were highlighted by Gram and Groccott-Gomori staining. The final diagnosis was lingual actinomycosis. Oral amoxicillin treatment (8/8 h for 2 weeks) was started, and after 1-month complete resolution was observed. Lingual actinomycosis is a rare lesion that must be recognized by dentists, because its early diagnosis and correct treatment reduce the possibility of a clinical complication that compromises the patient's quality of life. Noteworthy, when located on the midline dorsum of posterior tongue, actinomycosis can simulate nodular median rhomboid glossitis, expanding its spectrum of clinical differential diagnosis.

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Among Boletales, the family Boletaceae has the highest diversity worldwide. Additionally, this fungal group has great ecological relevance because it not only includes mainly ectomycorrhizal but also saprotrophic species. Furthermore, some species are used as food and have sociocultural and economic importance worldwide. In Mexico, the Boletaceae family boasts a substantial number of species, yet our understanding of these species remains far from comprehensive. In this work, by using macro- and micromorphological and phylogenetic analyses of DNA sequences from multi-gene analyses based on ITS, nrLSU, rpb1, rpb2, and tef1, we report five new species belonging to the genera Aureoboletus and Chalciporus: A. ayuukii and A. elvirae from a Quercus scytophylla forest, A. readii from a mixed forest, C. perezsilvae from cloud forest, and C. piedracanteadensis from both a mixed coniferous forest and a Quercus-Pinus forest. In Mexico, four species of Aureoboletus are used as a food source, and in this work, we add another one, A. readii, which is traditionally consumed by members of the Tlahuica-Pjiekakjoo culture, who are located in the central part of the country. This work contributes to our knowledge of two genera of Boletaceae in a geographical area that is scarcely studied, and thus, our understanding of its biocultural relevance is enriched.

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Worldwide, the fungus known as huitlacoche (Ustilago maydis (DC.) Corda) is a phytopathogen of maize plants that causes important economic losses in different countries. Conversely, it is an iconic edible fungus of Mexican culture and cuisine, and it has high commercial value in the domestic market, though recently there has been a growing interest in the international market. Huitlacoche is an excellent source of nutritional compounds such as protein, dietary fiber, fatty acids, minerals, and vitamins. It is also an important source of bioactive compounds with health-enhancing properties. Furthermore, scientific evidence shows that extracts or compounds isolated from huitlacoche have antioxidant, antimicrobial, anti-inflammatory, antimutagenic, antiplatelet, and dopaminergic properties. Additionally, the technological uses of huitlacoche include stabilizing and capping agents for inorganic nanoparticle synthesis, removing heavy metals from aqueous media, having biocontrol properties for wine production, and containing biosurfactant compounds and enzymes with potential industrial applications. Furthermore, huitlacoche has been used as a functional ingredient to develop foods with potential health-promoting benefits. The present review focuses on the biocultural importance, nutritional content, and phytochemical profile of huitlacoche and its related biological properties as a strategy to contribute to global food security through food diversification; moreover, the biotechnological uses of huitlacoche are also discussed with the aim of contributing to the use, propagation, and conservation of this valuable but overlooked fungal resource.

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El estudio de hipomineralización en molares e incisivos fue descrito por primera vez en el año 1970, posteriormente en 2001 el término Hipomineralización Molar Incisivo (HMI) fue sugerido por la Academia Europea de Odontología Pediátrica (EAPD) para referirse a este como un defecto específico del desarrollo del esmalte; ya para el año 2003 se estandarizaron los criterios de diagnóstico clínico. La HMI es un defecto del esmalte dentario ampliamente estudiado, sin embargo, hasta la fecha los factores de riesgo no son concluyentes, pero se considera de origen sistémico y multifactorial. Las implicaciones sistémicas pueden acontecer en periodos específicos (pre, peri y posnatal) considerados periodos importantes y críticos en el desarrollo de la vida humana. Objetivo: aportar la mejor evidencia científica disponible sobre los factores sistémicos asociados a la Hipomineralización Molar Incisivo. Materiales y métodos: Se realizó una búsqueda sistematizada seleccionando estudios primarios en bases de datos electrónicas: Pub Med, biblioteca Cochrane e Hinari a través de la pregunta PICO. Resultados: 115 estudios fueron identificados a través de la búsqueda electrónica de estos solo 18 fueron elegibles según los criterios de inclusión. Conclusiones: Son múltiples los posibles factores sistémicos asociados con HMI, entre ellos resaltan complicaciones en el embarazo como: fiebres altas, hipertensión arterial, diabetes gestacional, procesos infecciosos, uso frecuente de antibióticos y desnutrición, así como parto prematuro, bajo peso al nacer y las enfermedades respiratorias, fiebre y otitis en los primeros años de vida del niño

O estudo da Hipomineralização nos molares e incisivos foi descrito pela primeira vez no ano de 1970, posteriormente no 2001 o termo Hipomineralização Molar Incisivo (HMI) foi sugerido pela Academia Europeia de Odontopediatria (EAPD) para se referir a este como um defeito específico do desenvolvimento do esmalte, já no ano 2003 se padronizaram os critérios de diagnóstico clínico. A HMI é um defeito do esmalte dentário amplamente estudado, no entanto até hoje os fatores de risco ainda não estão totalmente esclarecidos, mas se considera como de origem sistémico e multifatorial. As implicações sistémicas podem acontecer em períodos específicos (pre, peri e pós natal) que se consideram períodos importantes e críticos no desenvolvimento da vida humana. Objetivo: aportar a melhor evidencia científica disponível sobre os fatores sistémicos associados à Hipomineralização Molar Incisivo. Materiais e métodos: foi realizada uma busqueda sistematizada selecionando estudos primários em bases de dados eletrônicas: Pub Med, biblioteca Cochrane e Hinari a través da pergunta PICO. Resultados: 115 estudos foram identificados a través da busqueda eletrônica dos quais unicamente 18 foram elegíveis segundo os critérios de inclusão. Conclusões: São muitos os possíveis fatores sistémicos associados com HMI entre eles destacam complicações na gravidez como: febres altas, hipertensão arterial

The study of Hypomineralization in molars and incisors was described for the first time in the year 1970. Later in 2001, the term Molar Incisor Hypomineralization (MIH) was suggested by the European Academy of Paediatric Dentistry (EAPD) to refer to this as a specific enamel development defect, and in 2003, the clinical diagnostic criteria were standardized. MIH is a widely studied tooth enamel defect; however, to date, the risk factors are not conclusive but, it is considered of systemic and multifactorial origin. The systemic implications can occur in specific periods (pre, peri, and postnatal) considered important and critical periods of the development of human life. Objective: to provide the best available scientific evidence on the systemic factors associated with molar incisor Hypomineralization. Methodology: A systematized search was varied out selecting primary studies in electronic database: Pub Med, Cochrane and Hinari library, through the PICO question. Results: 115 studied were identified through the electronic search. Of these, only 18 were found eligible according to the inclusion criteria. Conclusions: There are multiple possible systemic factors associated with MIH. Among them, certain complications in pregnancy stand out, such as: Hugh fevers, arterial hypertension, gestational diabetes, infectious processes, frequent use of antibiotics and malnutrition, as well as premature delivery, low birth weight, and respiratory diseases, fever and otitis in the first years of the child's life

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