Publications by authors named "Erika Rodriguez-Lobato"
Introduction: There are no reports of the density of hair follicles in the scalp of Mexican mestizo population, necessitating the determination of normal references values for this population compared with other ethnic groups.
Objective: To determine the average hair follicle count on the scalp in Mexican mestizo population.
Materials And Methods: A total of 50 scalp samples (25 men and 25 women) from Mexican mestizo individuals aged between 19 and 60 years, with no clinical evidence of hair disease, obtained by biopsy punch at General Hospital "Dr.
Alopecia areata (AA) is a common form of nonscarring hair loss. It is believed to be a consequence of an immune-mediated stimulus, probably involving autoreactive T cells against antigens present in the hair follicle. The exact antigen is still unknown; however, some authors have proposed that melanogenesis-associated molecules might trigger autoimmunity.
View Article and Find Full Text PDFBackground: Actinic prurigo (AP) is an idiopathic photodermatosis. Although its initial manifestations can appear in 6 to 8-year-old children, cases are diagnosed later, between the second and fourth decades of life, when the injuries are exacerbated.
Objective: To identify risk factors associated with clinical manifestations of AP such as skin and mucosal lesions.
Alopecic and aseptic nodule of the scalp is a rare entity characterized by the presence of nodules or cysts with sterile punctured material and negative cultures accompanied by nonscarring alopecia in the scalp of young men. We describe a case in which an 11-year-old girl presented with a nodular, fluctuant, round lesion on the vertex with localized alopecia. High-resolution ultrasound showed a hypoechoic lesion with increased flow on Doppler imaging and culture of the citrine-yellowish material obtained by puncture was negative.
View Article and Find Full Text PDFWe describe the case of a 45-year-old man who presented with a 5-month history of unilateral pruritic linear erythematous papules and atrophy on the chin and mandibular area. Dermoscopy showed areas of cicatricial alopecia with absence of follicular openings, perifollicular erythema and pigment. Lichen planopilaris of the face is a rare variant with only 13 cases reported in the literature.
View Article and Find Full Text PDFMucormycosis is an invasive infection caused by opportunistic fungi. Rhizopus, Lichtheimia, Mucor and Rhizomucor are the most common isolated genera. Primary cutaneous mucormycosis is usually related to traumatic injuries, but immunocompromised cases are associated with underlying conditions such as diabetes mellitus and malignancies.
View Article and Find Full Text PDFArticle Synopsis
- Actinic prurigo is a skin condition mainly seen in indigenous and mestizo Latin American populations, characterized by itchy skin and mucosal lesions that worsen with sun exposure and typically begins in childhood.
- The exact cause is not well understood, but it involves an unusual immune response with high levels of certain immune cells, hinting at a hypersensitivity reaction.
- Diagnosis is based on clinical observation and specific histopathology findings, while thalidomide is currently the most effective treatment available despite potential side effects.
Article Synopsis
- Pemphigus vulgaris (PV) is a chronic autoimmune skin disease that has been potentially linked to viral infections, specifically herpes simplex virus (HSV), based on earlier reports.
- A study involving 15 confirmed cases of PV used advanced tissue analysis techniques but found no evidence of HSV-1 in the samples tested.
- The authors emphasize the need for more robust research to clarify whether HSV-1 contributes to the development of PV or if it is simply a coincidental infection due to the weakened immune system of PV patients.
Background: Actinic prurigo (AP) is a type of photodermatosis, the pathophysiology of which has not been determined. AP has been suggested to be a hypersensitivity reaction to the presence of eosinophils and the local production of IgE.
Material And Methods: Descriptive study, using paraffin blocks of tissue that have been diagnosed with AP from the Dermopathology department, Hospital General Dr.
Background: Actinic prurigo (AP) is an idiopathic photodermatosis, this entity requires exposure to UV-B and -A to develop lesions. Apoptosis is a physiological death program that can be initiated by a permanently active mechanism (extrinsic pathway) or irreparable damage (intrinsic pathway).
Material And Methods: Descriptive study, the sample size comprised 64 paraffin blocks of tissue with a diagnosis of AP.
Background: Actinic prurigo (AP) is an idiopathic photodermatosis that usually onsets during childhood and predominates in women. It is characterized by the symmetrical involvement of sun-exposed areas of the skin, lips, and conjunctiva.
Objectives: This study aimed to analyze the risk factors associated with AP using a case-control design.
Little is known about the residues that control the binding and affinity of thiazide-type diuretics for their protein target, the renal Na(+)-Cl(-) cotransporter (NCC). Previous studies from our group have shown that affinity for thiazides is higher in rat (rNCC) than in flounder (flNCC) and that the transmembrane region (TM) 8-12 contains the residues that produce this difference. Here, an alignment analysis of TM 8-12 revealed that there are only six nonconservative variations between flNCC and mammalian NCC.
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