LMLuis Ángel Mendoza-Vargas

Luis Ángel Mendoza-Vargas

*This is an algorithmically generated author record based on publicly available information.

Luis Ángel Mendoza-Vargas has a total of 18 co-authors. Here are the top co-authors by number of shared publications:


Latest Publications

  • Open Access

    Multicenter Real-World Observational Study of Pargeverine/Lysine Clonixinate in Acute Visceral Colicky Pain

    by Gerardo E. Espinosa-Estrada, Samuel Sevilla-Fuentes, Brandon Bautista-Becerril, Ramcés Falfán-Valencia, Luis Ángel Mendoza-Vargas, José Francisco Araiza-Rodríguez, Pedro Moreno-Chavez

    Background and objectives: Acute colicky abdominal pain, involving visceral spasms and inflammatory mechanisms, is a common complaint in everyday medical practice. Despite its widespread use, clinical evidence on the fixed-dose combination of pargeverine 10 mg plus lysine clonixinate 125 mg remains limited. The objective of this study was to describe real-world clinical outcomes, safety, and patient-reported experience associated with this combination in routine practice. Materials and methods: This multicenter, observational, non-comparative, real-world study included adult patients with acute colicky abdominal pain of gastrointestinal, urological, or gynecological origin. Pain intensity was assessed using a visual analog scale (VAS) at baseline and at 5 ± 3 days. Secondary outcomes included time to pain relief, satisfaction with treatment, and safety. Associations between pain reduction and patient-reported outcomes were explored. Results: A total of 202 patients were analyzed. Significant pain reduction was observed across all etiologies (p < 0.001), with median VAS reductions ranging from 6 to 9 points (approximately 70% to 90% from baseline). More than 95% of patients reported early improvement, and sustained relief was maintained in more than 96% throughout the study period, regardless of the pain’s origin. Adverse events were infrequent (3%), mild in intensity (primarily transient gastrointestinal symptoms), and did not lead to treatment discontinuation. Conclusions: In real-world clinical practice, the fixed-dose combination of pargeverine and lysine clonixinate was associated with early and sustained, clinically meaningful pain reduction across multiple forms of acute visceral colicky pain, with a favorable safety and tolerability profile, supporting its relevance as a short-term therapeutic option in mild to severe acute pain.

  • Open Access

    Systemic Inflammation Indices as Early Predictors of Severity in Acute Pancreatitis

    by José Francisco Araiza-Rodríguez, Brandon Bautista-Becerril, Alejandra Núñez-Venzor, Ramcés Falfán-Valencia, Asya Zubillaga-Mares, Edgar Abarca-Rojano, Samuel Sevilla-Fuentes, Luis Ángel Mendoza-Vargas, Espiridión Ramos-Martínez, Bertha Berthaúd-González, et al.

    Background/Objectives: Acute pancreatitis (AP) is a highly variable inflammatory condition that can lead to severe complications and high mortality, particularly in its severe forms. Early risk stratification is essential; however, the delayed availability of traditional scoring systems often limits its effectiveness. This study aimed to evaluate the clinical utility of systemic inflammation indices as early predictors of severity in patients with acute pancreatitis. Methods: A retrospective, observational study was conducted among patients diagnosed with acute pancreatitis, classified according to the revised Atlanta criteria. Upon admission, systemic inflammation indices were calculated from complete blood count parameters, including neutrophil-to-lymphocyte ratio (NLR), monocyte-to-lymphocyte ratio (MLR), systemic immune-inflammation index (SII), systemic inflammation response index (SIRI), and aggregate index of systemic inflammation (AISI). Severity was assessed using the APACHE II score. Statistical analysis involved Kruskal–Wallis tests, Dunn’s post hoc comparisons, ROC curve analysis, logistic regression for odds ratios (ORs), and Spearman correlations. Results: SII, NLR, MLR, SIRI, and AISI showed statistically significant associations with AP severity (p < 0.05). MLR and SIRI exhibited the highest predictive performance (AUC = 0.74). ORs for severe pancreatitis were: MLR = 19.10, SIRI = 7.50, NLR = 7.33, AISI = 5.12, and SII = 4.10. All four indices also demonstrated moderate positive correlations with APACHE II scores. Conclusions: Systemic inflammation indices are simple, cost-effective, and accessible tools that can aid in the early identification of patients at high risk for severe acute pancreatitis. Their integration into clinical practice may enhance early decision-making and improve patient outcomes.


  • Open Access

    IgG4-RD-Associated Mikulicz Syndrome Without Classic Systemic Involvement—A Case Report

    by Luis Ángel Mendoza-Vargas, Samuel Sevilla-Fuentes, Brandon Bautista-Becerril, Bertha Berthaúd-González, Ramcés Falfán-Valencia, Linda P. Félix-Martínez, Mauricio Avila-Páez, Jennifer Manilla-González

    Background: IgG4-related disease is a rare, chronic inflammatory disorder characterized by lymphoplasmacytic infiltration, ‘storiform’ fibrosis, and elevated IgG4 levels in affected tissues. This disease has a broad and heterogeneous clinical spectrum that includes four main phenotypes: pancreatic–hepatobiliary disease, retroperitoneal/aortic fibrosis, head and neck disease, and Mikulicz syndrome. Case Description: An 85-year-old male patient with a clinical presentation, which is unusual outside Asia, of IgG4-related disease phenotype Mikulicz syndrome, characterized by bilateral dacryoadenitis, orbital pseudotumor, and no evidence of significant systemic participation. Despite extensive involvement in the orbital and glandular region, the patient did not develop serious organ complications, a behavior rarely documented in the literature. Despite the serum IgG4 levels being normal (<135 mg/dL), the clinical and radiological picture suggested IgG4-RD, emphasizing the need for a biopsy for a definitive diagnosis. Histopathological examination revealed a dense lymphoplasmacytic infiltrate, storiform fibrosis, and more than 40% IgG4-positive cells, confirming the diagnosis. Results: Treatment with prednisone was initiated alongside azathioprine for long-term control. Calcium and vitamin D3 supplementation were added to prevent glucocorticoid-induced osteoporosis. Remarkable clinical improvement was observed within 24 h, with progressive orbital and glandular symptoms resolution. Over a year, the patient exhibited complete resolution of the orbital tumors, total recovery of vision, and no relapses. The only sequelae observed were dry eye. Conclusions: This case highlights the need to consider IgG4-RD with normal serum IgG4 levels, the importance of histopathology for diagnosis, and the efficacy of steroids as first-line treatment. A multidisciplinary approach is essential for timely treatment.

  • Open Access

    IgG4-RD-Associated Mikulicz Syndrome Without Classic Systemic Involvement

    by Luis Ángel Mendoza-Vargas, Samuel Sevilla-Fuentes, Brandon Bautista-Becerril, Bertha Berthaúd-González, Ramcés Falfán-Valencia, Mauricio Avila-Páez, Linda P. Félix-Martínez, Jennifer Manilla-Gonzalez

    Background: IgG4-related disease is a rare, chronic inflammatory disorder characterized by lymphoplasmacytic infiltration, ‘storiform’ fibrosis, and elevated IgG4 levels in affected tissues. This disease has a broad and heterogeneous clinical spectrum that includes four main phenotypes: pancreatic-hepatobiliary disease, retroperitoneal/aortic fibrosis, head and neck disease, and Mikulicz syndrome. Case Description: An 85-year-old male patient with an unusual clinical presentation outside Asia of IgG4-related disease phenotype Mikulicz syndrome, characterized by bilateral dacryoadenitis, orbital pseudotumor, and no evidence of significant systemic participation. Despite extensive involvement in the orbital and glandular region, the patient did not develop serious organ complications, a behavior rarely documented in the literature. Despite the serum IgG4 levels being normal (< 135 mg/dl), the clinical and radiological picture suggested IgG4-RD, emphasizing the need for a biopsy for a definitive diagnosis. Histopathological examination revealed a dense lymphoplasmacytic infiltrate, storiform fibrosis, and more than 40% IgG4-positive cells, confirming the diagnosis. Results: Treatment with prednisone was initiated alongside azathioprine for long-term control. Calcium and vitamin D3 supplementation were added to prevent glucocorticoid-induced osteoporosis. Remarkable clinical improvement was observed within 24 hours, with progressive orbital and glandular symptoms resolution. Over a year, the patient exhibited complete resolution of the orbital tumors, total recovery of vision, and no relapses. The only sequelae observed were dry eye. Conclusions: This case highlights the need to consider IgG4-RD with normal serum IgG4 levels, the importance of histopathology for diagnosis, and the efficacy of steroids as first-line treatment. A multidisciplinary approach is essential for timely treatment.

  • Open Access

    Tongue Tuberculosis as a Complication of Pott’s Disease in a Patient on Systemic Steroid Therapy without Pulmonary Tuberculosis

    by Samuel Sevilla-Fuentes, Luis Ángel Mendoza-Vargas, José Francisco Araiza-Rodríguez, Bertha Berthaúd-González, Ramcés Falfán-Valencia, Brandon Bautista-Becerril

    A 78-year-old man with a previous diagnosis of rheumatoid arthritis on prolonged treatment with corticosteroids presented with intense and progressive pain at the cervical level that prevented him from resting his head and walking, in addition to an ulcerative lesion covering 80% of the lingual area that was previously treated as oral candidiasis without improvement. On arrival, with no clinical or serological data of rheumatoid arthritis, immunosuppressive treatment was suspended, and a biopsy of the oral cavity was requested, confirming the diagnosis of lingual tuberculosis, an extremely rare disease, occurring in less than 1% of extrapulmonary cases. MRI of the cervical spine showed a crush fracture of the C6 and C7 bodies associated with spondylitis of probably infectious etiology that required surgical treatment, and histopathological studies confirmed Pott’s disease. The patient displayed no evidence of pulmonary tuberculosis from arrival until the end of the follow-up.