Actualización práctica de diagnóstico y tratamiento de la urticaria crónica / Practical update for the diagnosis and treatment of chronic urticaria

Resumen La urticaria es un patrón distintivo de respuesta inflamatoria de piel y/o mucosas caracterizada por la aparición súbita de ronchas evanescentes, angioedema o ambos, asociados a prurito. Las formas agudas son frecuentes y se limitan a brotes de menos de 6 sema nas; mientras que las crónicas tienen una prevalencia menor al 1%, mayor duración y pueden ser espontáneas o inducibles. Los mecanismos etiopatogénicos involucrados en esta enfermedad incluyen la autoalergia, la autoinmunidad y la inflamación con la activación celular, principalmente del mastocito, lo que lleva a su degranulación con libe ración de mediadores vasoactivos. En su abordaje son fundamentales la confirmación diagnóstica; la búsqueda de indicadores de su etiopa togenia; la detección de cofactores que pueden modular su actividad; el reconocimiento de comorbilidades; la evaluación de posibles biomarcadores y, el impacto en la calidad de vida, el registro de la actividad y el control de la enfermedad. El manejo farmacológico tiene por objetivo controlar los síntomas, mientras la urticaria resuelve de forma espontánea. Este se describe de forma escalonada con una complejidad creciente.

Abstract Urticaria is a distinctive pattern of inflammatory re sponse of the skin and/or mucous membranes charac terized by the sudden appearance of vanishing wheals, angioedema, or both, associated with pruritus. Acute forms are frequent and limited to outbreaks of less than 6 weeks; while the chronic ones have a prevalence of less than 1%, longer duration and can be spontaneous or inducible. The etiopathogenic mechanisms involved in this disease include autoallergy, autoimmunity, and inflam mation with cell activation, mainly of the mast cell, leading to its degranulation with the release of vasoac tive mediators. Along its approach, diagnostic confirmation, search for indicators of its etiopathogenesis, detection of cofactors that can modulate its activity, recognition of comorbidi ties, evaluation of possible biomarkers and the assess ment of disease activity, impact and control are essential. The pharmacological management aims to control the symptoms, until the urticaria, which is self-resolv ing, is gone. This is described in a stepwise fashion with increasing complexity.

Bartonelose: doença de importância para a saúde pública envolvendo a tríade homem-ambiente-animal / Bartonellosis: disease of importance for public health involving the man-environment-animal triad / Bartonelosis: enfermedad de importancia para la salud pública que involucra la triada hombre-ambiente-animal

A relação hospedeiro-parasita é caracterizada como uma interação alelobiótica construída por meio de processos evolutivo-adaptativos com hospedeiros assintomáticos. No ambiente silvestre é notório o equilíbrio desta relação, porém quando há intervenção antropogênica um ciclo enzoótico pode se estabelecer proporcionando o surgimento de enfermidades emergentes ou reemergentes. Dentre estes agentes etiológicos, a Bartonella spp. é um bacilo gram-negativo da classe Proteobacteria que apresentam tropismo por eritrócitos e células endoteliais, com infecção já descrita em animais das Ordens: Rodentia, Lagomorpha, Carnivora, Artiodactyla, Eulipotyphla e Chiroptera. A infecção pela bactéria pode estar associada à linfadenite, endocardite, angiomatose bacilar e peliose hepática em humanos. Treze espécies de Bartonella spp. são tidas como zoonóticas. O objetivo desta revisão está em apontar para a comunidade científica a bartonelose como uma doença de notificação obrigatória, assim como, os possíveis hospedeiros em animais domésticos e silvestres e sua etiopatogenia.(AU)

The host-parasite relationship is characterized as an allelobiotic interaction built through evolutionary-adaptive processes with asymptomatic hosts. In the wild environment, the balance of this relationship is notorious, but when there is anthropogenic intervention, an enzootic cycle can be established, providing the emergence of emerging or reemerging diseases. Among these etiologic agents, Bartonella spp. is a gram-negative bacillus of the Proteobacteria class that presents tropism for erythrocytes and endothelial cells, with infection already described in animals of the Orders: Rodentia, Lagomorpha, Carnivora, Artiodactyla, Eulipotyphla and Chiroptera. Infection by the bacterium may be associated with lymphadenitis, endocarditis, bacillary angiomatosis and peliosis hepatica in humans. Thirteen species of Bartonella spp. are considered zoonotic. The objective of this review is to point out to the scientific community bartonellosis as a notifiable disease, as well as the possible hosts in domestic and wild animals and their etiopathogenesis.(AU)

La relación hospedador-parásito se caracteriza por ser una interacción alelobiótica construida mediante procesos evolutivo-adaptativos con hospedadores asintomáticos. En el medio silvestre, el equilibrio de esta relación es notorio, pero cuando hay intervención antropogénica, puede establecerse un ciclo enzoótico, propiciando la aparición de enfermedades emergentes o reemergentes. Entre estos agentes etiológicos, Bartonella spp. es un bacilo gramnegativo de la clase Proteobacteria que presenta tropismo por eritrocitos y células endoteliales, con infección ya descrita en animales de los Órdenes: Rodentia, Lagomorpha, Carnivora, Artiodactyla, Eulipotyphla y Chiroptera. La infección por la bacteria puede estar asociada a linfadenitis, endocarditis, angiomatosis bacilar y peliosis hepática en humanos. Trece especies de Bartonella spp. se consideran zoonóticas. El objetivo de esta revisión es señalar a la comunidad científica la bartonelosis como enfermedad de declaración obligatoria, así como los posibles hospedadores en animales domésticos y salvajes y su etiopatogenia.(AU)

Manejo y tratamiento de la ulcera peptica / Management and treatment of peptic ulcer

El objetivo de este artículo de actualización tiene como objetivo hacer referencia acerca de la Ulcera péptica, una de las patologías muy frecuente en el sistema digestivo que afecta la mucosa gástrica o intestinal, cuya patogenia es multifactorial y cuyas complicaciones pueden ser graves, requiriendo un adecuado manejo y tratamiento hospitalario. Esta revisión hace referencia a los factores patogénicos más frecuentes, la fisiopatología, el abordaje clínico y su tratamiento, haciendo énfasis en la terapia farmacológica, en la que se hace una revisión sucinta y completa de todas sus propiedades farmacológicas.

The objective of this update article aims to refer to peptic ulcer, one of the very common pathologies in the digestive system affecting the gastric or intestinal mucosa, whose pathogenesis is multifactorial and whose complications can be serious, requiring adequate management and hospital treatment. This review refers to the most frequent pathogenic factors, pathophysiology, clinical approach and their treatment, emphasizing pharmacological therapy, in which a succinct and complete review of all its pharmacological properties is made.

Fisiopatología del síndrome de ovario poliquístico / Pathophysiology of polycystic ovary syndrome

Introducción: En la génesis del síndrome de ovario poliquístico intervienen múltiples factores sistémicos y locales que tienen una relación multidireccional sobre los que persisten muchas cuestiones aún sin dilucidar y cierta confusión e incertidumbre. Objetivo: Describir el enfoque actual sobre las causas y los mecanismos involucrados en el origen y desarrollo del síndrome de ovario poliquístico. Métodos: Se realizó una revisión bibliográfica tipo estado del arte. Se revisaron alrededor de 250 artículos, que se obtuvieron de las bases PubMed, Medline, SciELO y Google Académico. Se describen los factores y las vías que se proponen para explicar la etiopatogenia y fisiopatología de alteraciones genéticas, ambientales, endocrinas y metabólicas asociadas al síndrome y su expresión clínica. Conclusiones: La fisiopatología del síndrome de ovario poliquístico es compleja. Muchos aspectos permanecen sin esclarecerse, pero se tiene cada vez más conocimiento que aporta luz a los enigmas que aún persisten y a la comprensión de fenómenos previamente desconocidos. Existe el convencimiento creciente de que la alteración central es a nivel ovárico, que el síndrome es heterogéneo en todos sus elementos y que conocer la gran diversidad de factores y mecanismos que intervienen en su etiología y patogenia es fundamental no sólo desde lo científico, sino también por su utilidad práctica(AU)

Introduction: Multiple systemic and local factors are involved in the genesis of polycystic ovary syndrome that have a multidirectional relationship about which many there are questions yet to be clarified and some confusion and uncertainty persist. Objective: To describe the current approach to the causes and mechanisms involved in the origin and development of polycystic ovary syndrome. Methods: A state-of-the-art literature review was performed. The factors and pathways proposed to explain the etiopathogenesis and pathophysiology of genetic, environmental, endocrine and metabolic alterations associated with the syndrome and its clinical expression are described. Conclusions: The pathophysiology of polycystic ovary syndrome is complex. Many aspects remain unclear, but there is increasing knowledge that sheds light on the enigmas that still persist and on the understanding of previously unknown phenomena. There is a growing conviction that the central alteration is at the ovarian level, that the syndrome is heterogeneous in all its elements and that knowledge of the great diversity of factors and mechanisms involved is fundamental, not only from the scientific point of view but also for its practical utility(AU)

Current theories of pathophysiology and potential therapeutic targets of COVID-19: What we know so far

In 2019, a new variant of coronavirus emerged that put the whole world on a standstill due to its unprecedented spread and morbidity. Since then, scientists have been working on several theories to explain the origin and pathogenesis of the virus. Over this period of time, it has been observed clinically that individual variation exists in the way this virus infects people, its symptomatology and sequelae. The pathophysiology is still unclear. This review was taken up to consolidate all the available information until date about current theories of etiopathogenesis with an understanding of potential therapeutic targets on the mechanisms. This review also highlights the gray areas that need to be addressed in the future. Research papers published up to December 7, 2020 were included based on a search on PubMed, Google Scholar, etc., to get the latest relevant literature on this topic. Coronavirus expresses differently in different individuals, affecting different organ systems, and having variable severity. However, the underlying pathogenic mechanisms are not completely understood. Due to the lack of definite curative therapy, it is essential to explore the basic pathophysiology so as to develop more effective and target-based therapies in the future.

Lateral Canals - Terminologies, Classification and Prevalence in Permanent and Deciduous Teeth : A 12 Comprehensive Review

A clear understanding of the intricate anatomy of human teeth is an essential prerequisite to all dental procedures especially in the case of root canal treatment. Anatomical relationship between the pulp and the periodontal structures plays a major role in the etiopathogenesis of the pulp or pulp periodontal lesions. Lateral canals may comprise of potential pathways through which bacteria or their products may reach the periodontal ligament and likewise. This, often overlooked aspect contribute to persistence of periapical lesion even after the completion of endodontic treatment. Therefore, this library dissertation attempts to present a comprehensive review on the origin, frequency, location and prevalence of lateral canals in primary and permanent dentition.

A Conceptual Exploration on the Samprapti Ghatakas of Hyperthyroidism

Thyroid disorders are the commonest endocrine disorders worldwide with devastating health consequences. Hyperthyroidism is commonly referred as an overactive thyroid which enhances the rate of metabolism in multiple levels. Since this disorder is having multisystem effects, the pathology can’t be restricted to the gland only. There is striking similarity between the functions of Dhatwagni and thyroid hormone metabolism. The far reaching metabolic disturbances in thyroid dysfunctions are attributed to Dhatwagni vikruthi. On a close review, it is evident that Ayurvedic concept available in this direction clearly demonstrates the pathology when juxtaposed against the advanced principles of modern medicine. In Ayurveda, the categorization of diseases had been made according to the involved Doshas, Dooshyas, Srotas, Agni, Ojus (the etiopathological factors) which are termed as the Samprapti ghatakas. These descriptions are largely based on factors and way of life prevalent in the period when they were compiled. Detailed studies may be undertaken to ascertain these factors of the diseases which are relevant in the current lifestyle and environment. It is striking that the treatment of hyperthyroidism has not changed greatly in the past several decades. Only conservative management is possible through Anti thyroid drugs, but about a 50% have relapse rate. A global epidemiological study reported a data of 50% of subclinical hyperthyroid subjects have arisen from excessive intake of thyroid hormones. A thorough understanding of the complete disease process with regard to the Samprapti ghatakas involved is of great importance in this subject which forms the basis of systematic approach in the Ayurvedic management.

Algunas consideraciones en torno al cáncer de esófago / Some specificities around esophageal cancer

RESUMEN Introducción: El cáncer de esófago es una enfermedad presente a escala mundial, sobre todo en naciones en vías de desarrollo. Se realizó una revisión bibliográfica en bases de datos biomédicas mediante el motor de búsqueda de información Google académico. Se seleccionaron 24 de 62 artículos; 22 (91,6 %) del último quinquenio, publicados en español e inglés, relacionados con el objetivo propuesto. Objetivo: Describir algunos aspectos del cáncer de esófago, con énfasis en los epidemiológicos, etiopatogénicos y del tratamiento quirúrgico. Desarrollo: El cáncer de esófago es más frecuente en varones, con proporción hombre/mujer de 6:1, aunque en poblaciones de alto riesgo la incidencia es igual en ambos sexos; aunque algunos refieren que la relación es de 3 a 10 hombres por cada mujer, en dependencia de la zona geográfica. Las áreas de alta frecuencia son: Asia, África Central y del Sur. El carcinoma epidermoide y el adenocarcinoma representan el 95,0 % de todos los tumores esofágicos. La esofagectomía abierta o mínimamente invasiva constituye el pilar básico del tratamiento quirúrgico. Conclusiones: En la etiología del cáncer de esófago, los factores moleculares, genéticos y ambientales juegan un papel importante. El diagnóstico en etapas avanzadas predomina debido a lo tardío de la aparición de los síntomas y a las insuficiencias en el cribaje. El tratamiento quirúrgico constituye un pilar fundamental para los tres primeros estadios de la enfermedad, acompañada o no de quimio-radioterapia adyuvante o de neoadyuvancia (en el estadio II).

ABSTRACT Introduction: Esophageal cancer is a disease present worldwide, especially in developing nations. A bibliographic review was carried out in biomedical databases using the Google Scholar search engine. 24 of 62 articles were selected; 22 (91.6 %) of the last five years, published in Spanish and English, related to the proposed objective. Objective: To describe some aspects of esophageal cancer, with emphasis on the epidemiological, etiopathogenic and surgical treatment. Development: Esophageal cancer is more common in men, with a male/female ratio of 6:1, although in high-risk populations the incidence is the same in both sexes; although some report that the ratio is between 3 and 10 men for every woman, depending on the geographical area. High frequency areas are: Asia, Central and South of Africa. Squamous cell carcinoma and adenocarcinoma represent 95.0 % of all esophageal tumors. Open or minimally invasive esophagectomy is the basic pillar of surgical treatment. Conclusions: In the etiology of esophageal cancer, molecular, genetic and environmental factors play an important role. Diagnosis in advanced stages predominates due to the late onset of symptoms and insufficient screening. Surgical treatment is a fundamental pillar for the first three stages of the disease, accompanied or not by adjuvant or neoadjuvant chemo-radiotherapy (in stage II).

Algunas especificidades en torno al cáncer de pulmón / Some specificities about lung cancer

Introducción: El cáncer de pulmón predomina a nivel mundial, en la tercera edad de la vida y exhibe cifras bajas de supervivencia. Se realiza una búsqueda en bases bibliográficas biomédicas; se seleccionaron 25 de 58 artículos sobre el tema. Objetivos: Describir y analizar algunas características específicas del cáncer de pulmón con énfasis en aspectos epidemiológicos, etiopatogénicos y de la estadificación nodular linfática. Desarrollo: La clasificación tumor, ganglio, metástasis (TNM) para el cáncer de pulmón en su 8va versión, se publicó en 2016 y está vigente con nuevas categorías de los componentes tumor (T) y metástasis (M), así como la aparición de nuevos estadios, pero sin cambios en el componente ganglios (N); a pesar de lo cual la valoración nodular linfática del mediastino (pN) tiene implicaciones pronósticas y terapéuticas de gran importancia en los pacientes con cáncer de pulmón de células no pequeñas. Conclusiones: El cáncer de pulmón de células no pequeñas es el más frecuente y mortal a escala mundial, en una población ya envejecida, en la cual los factores moleculares, genéticos y ambientales juegan un papel en su desarrollo y son objeto de estudio, de ahí que la estadificación TNM sea de vital importancia al determinar las decisiones del tratamiento y del pronóstico. La correcta identificación de la afectación ganglionar es indispensable, puesto que, en ausencia de metástasis, marcará el pronóstico. La metodología utilizada para crear las diferentes ediciones de la clasificación TNM está en continua evolución, acorde al desarrollo científico contemporáneo(AU)

Introduction: Lung cancer is predominant worldwide, in the third age of life and exhibits low survival rates. A search is carried out in biomedical bibliographic databases; 25 of 58 articles on the topic were selected. Objectives: To describe and analyze some specific characteristics of lung cancer with an emphasis on epidemiological, etiopathogenic and lymphatic nodular staging aspects. Development: The TNM classification for lung cancer in its 8th version, was published in 2016 and is in force with new categories of components T and M, as well as the appearance of new stages but without changes in component N; Despite this, lymph node evaluation of the mediastinum (pN) has important prognostic and therapeutic implications in patients with non-small cell lung cancer. Conclusions: Non-small cell lung cancer is the most frequent and deadly worldwide, in an aging population, where molecular, genetic and environmental factors play a role in its development and continue to be the subject of studies; hence TNM staging is vital when determining treatment and prognosis decisions. The correct identification of lymph node involvement is essential, since in the absence of metastasis, it will determine the prognosis. The methodology used to create the different editions of the TNM classification is in continuous evolution, according to contemporary scientific development(AU)

Elementos etiopatogénicos y diagnósticos del tumor de Klatskin o colangiocarcinoma hiliar / Etiopathogenetic and Diagnostic Elements of Klatskin's Tumor or Hilar Cholangiocarcinoma

RESUMEN Introducción: El colangiocarcinoma hiliar es un tumor poco frecuente, de mal pronóstico y elevada mortalidad; con un curso silente hasta la fase avanzada de la enfermedad. Objetivo: Describir la etiopatogenia y el diagnóstico por imágenes del colangiocarcinoma hiliar. Métodos: De las bases datos PubMed, SciELO y Latindex, se seleccionaron artículos publicados desde 2005 hasta mayo de 2020, relacionados con el colangiocarcinoma hiliar/ perihiliar: etiopatogenia, diagnóstico clínico, estudios de laboratorio y estudios imaginológicos. Desarrollo: Ictericia obstructiva (90 por ciento), pérdida de peso (60 - 75 por ciento) y dolor abdominal (40 por ciento) constituyen los síntomas de presentación más frecuentes. Los factores predisponentes, genéticos y ambientales, desencadenan respuesta inflamatoria crónica que lesionan el DNA de las células ductales provocando diferenciación celular anómala con el desarrollo de colangiocarcinoma. Las infecciones parasitarias y enfermedad litiásica de las vías biliares, en países orientales y la colangitis esclerosante primaria, en occidente, constituyen los principales factores predisponentes. El trípode para el diagnóstico lo conforman: la ecografía, tomografía axial computarizada y la resonancia magnética nuclear. Conclusiones: El colangiocarcinoma hiliar es una causa de colestasis poco frecuente en la población general, con un predominio sexta década de la vida y en el sexo masculino, siendo la ictericia el motivo de consulta de estos pacientes, donde la ecografía y la tomografía axial computarizada juegan el papel más importante en su diagnóstico y donde la clasificación de Bismuth-Corlette y TNM son esenciales para la correcta planificación del tratamiento(AU)

ABSTRACT Introduction: Hilar cholangiocarcinoma is a rare tumor, with poor prognosis and high mortality, with a silent course until the advanced stage of the disease. Objective: To describe the etiopathogenesis and imaging diagnosis of hilar cholangiocarcinoma. Methods: From the PubMed, SciELO and Latindex databases, articles published from 2005 to May 2020 were selected, insofar they were related to hilar/perihilar cholangiocarcinoma: etiopathogenesis, clinical diagnosis, laboratory studies and imaging studies. Development: Obstructive jaundice (90 percent), weight loss (60-75 percent) and abdominal pain (40 percent) are the most frequent presenting symptoms. Predisposing factors, either genetic and environmental, trigger chronic inflammatory responses that damage the DNA of ductal cells, causing abnormal cell differentiation with the development of cholangiocarcinoma. Parasitic infections and bile duct stone disease in Eastern countries and primary sclerosing cholangitis in the West are the main predisposing factors. The tripod for diagnosis is made up of ultrasound, computerized axial tomography and nuclear magnetic resonance. Conclusions: Hilar cholangiocarcinoma is a rare cause of cholestasis among the general population, with a predominance during the sixth decade of life and among males, jaundice being the reason for consultation of these patients, in which ultrasound and computerized axial tomography play the most important elements for its diagnosis, while the TNM and Bismuth-Corlette classification are essential for the correct planning of treatment(AU)

Association Between Serum Uric Acid And Hba1c In Patients With Type 2 Diabetes Mellitus: A Case Control Study In Indian Population

Background and Aim:Uric acid is a pro-oxidant molecule that might be implicated in increasing oxidative stress and insulin resistance in type 2 diabetes mellitus patients. Hence, the aim of the study was to assess serum uric acid and HbA1clevel (an indicator of glycemic control) in these patients and speculate the association between the two. Meth-ods:40 newly diagnosed cases of Type 2 diabetes mellitus (20 males and 20 females) with age ranging between 35-70 years were statistically compared against 40 age and sex-matched healthy subjects with respect to their uric acid and HbA1c levels. Demographic data like the height and weight of patients was also recorded and statistically compared. Results:No statistical difference in age, height and weight were observed in type 2 diabetes cases vs. controls indicat-ing that the groups were comparable. HbA1c and uric acid levels of males and females with type 2 diabetes mellitus were significantly higher in comparison to normal males and females (controls). Correlation analysis showed a posi-tive and significant correlation between HbA1c and uric acid levels in male and female cases of type 2 diabetes melli-tus. Conclusion:Uric acid might have a role in the development or worsening of type 2 diabetes mellitus. However, further studies are required with a larger sample size to clearly establish the relationship between uric acid and glyce-mic control in type 2 diabetes mellitus since studies in the literature have shown conflicting results and hence the un-derstanding of the etiopathogenesis of type 2 diabetes mellitus remains poorly understood with respect to uric acid

Etiopathogenesis of vaginal discharge among married women in reproductive age group residing in rural area of Bhojipura District, Western Uttar Pradesh

Background: Vaginitis is one of common medical problem in women that often results in frequent medical consultations. Aim was to study the clinico-epidemiological profile and etiopathogenesis of various causes of vaginal discharge among females in age group 18-45 years residing in rural area of Bhojipura district.Methods: This Hospital based cross sectional study was conducted over a period of one year (March 2011 to February 2012) among 150 females aged 18-45 years presenting with the complaint of vaginal discharge. Information on sociodemographic data was obtained with the aid of questionnaires. Samples were obtained with two dry cotton-wool tipped swabs from vaginal fornices and were sending to department of microbiology.Results: The prevalence rate of vaginal discharge was found to be 24.6% among females in reproductive age group attending the outpatient department from rural background. Out of 150 patients who were enrolled for study 86 (57.30%) were diagnosed with non-infective discharge while 64 (42.60%) patients with infective discharge. Bacterial vaginosis was detected in 25 (39.1%), Candida albicans was detected in 23 (35.9%), T. vaginalis in 4 (6.3%) and mixed infections were found in 12 (18.7%). According to vagina flora morphology 85 (56.6%) had normal morphology, 30 (20%) had shift from normal flora and 35 (23.3%) had definitive bacterial vaginosis. About 20.5% females with Candida based etiology were diabetic.Conclusions: Some common reproductive tract infections can be diagnosed and managed at primary level health facilities. This promotes community awareness through behavior change communication which includes safer sex practices, awareness of HIV and appropriate and timely health care seeking behavior.

Research Progress of Pulmonary Epithelioid Hemangioendothelioma / 中国肺癌杂志

Epithelioid hemangioendothelioma (EHE) is a rare vascular neoplasm that develops from vascular endothelial cells. It has been reported to occur many sites of body, but the most common EHE presentations are soft tissue (limbs), bone, liver and lung. Compared with other pulmonary tumors, pulmonary epithelioid hemangioendothelioma (P-EHE) is relatively rare. According to a literature review, more than 100 cases have been described all over the world. Due to the low incidence of P-EHE, lack of specificity in clinical symptoms and radiological findings, it is often misdiagnosed. Meanwhile, many patients do not receive appropriate treatment, resulting in poor prognosis in some cases. Histology and immunohistochemical methods are essential for diagnosis. However, there is no established standard treatment for P-EHE, because of the rarity of the disease. When the lesions are small and limited in number, surgical is the best treatment, achieving the purpose of diagnosis and treatment at the same time. This article tries to present the etiopathogenesis, clinical manifestations, diagnosis, treatment and prognosis of P-EHE.
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Lysosomal enzymes and mannose 6-phosphate receptors in the lacrimal drainage system: Evidence and its potential implications

Purpose: To investigate the presence and patterns of lysosomal enzymes and mannose 6-phosophate receptor (MPRs) in human lacrimal drainage system. Methods: The study was performed on healthy lacrimal sacs and nasolacrimal ducts obtained from exenteration samples immediately after surgery and frozen at ?80°C for subsequent analysis. Soluble proteins' extract was used for enzyme assays, sodium dodecyl sulfate–polyacrylamide gel electrophoresis (PAGE), native PAGE, activity staining, and western blot analysis. Membrane proteins were separately assessed for detection of mannose 6-phosphate receptors, MPR 46. Sepharose gels, 4-methylumbelliferyl substrates, and antibodies against common lysosomal enzymes and MPRs were used. Enzyme assays were carried out in triplicate to ascertain the results. Results: Differential lysosomal enzyme activities were documented, and among them acid phosphatase and ?-hexosaminidase were found to be high. Western blot analysis using enzyme antibodies and subsequent activity staining confirmed strong signals for moderately expressed enzymes such as fucosidase, glucuronidase, and mannosidase. Membrane extracts demonstrated the presence of MPR 46, which indicates the possible roles of cation-dependent MPRs in lysosomal targeting in human lacrimal drainage system. Conclusion: This study provides a proof of principle for the presence of differential lysosomal activity and mannose 6-phosphate ligand transport receptors in human lacrimal drainage system and hypothesizes the potential implications of their dysfunctions.

Progress in the study of signal pathways for chronic inflammation-associated pancreatic carcinogenesis / 药学学报

Pancreatic cancer is one of the most lethal and intractable human malignancies with poor prognosis. Chronic pancreatitis is the independent risk factor for pancreatic cancer. Smoking, obesity and family history are the risk factors for chronic inflammation-associated pancreatic carcinogenesis. Recent studies of signal pathways have made a significant progress in our understanding of chronic pancreatitis in pancreatic cancer. This review summarizes recent development in the important signal pathways involved in pancreatic carcino-genesis from chronic pancreatitis.

An Overview and Diagnosis of Malabsorbtion Syndromes-Review of Literature

Intestinal malabsorption results from a wide variety of pathogenetic mechanisms which result in impairment of digestion and absorption of the nutrients. Malabsorption syndromes are organised in to three broad categories. One due to maldigestion, second due to mucosal or neural problems, third due to microbial causes. Small intestinal biopsies are needed to establish the definitive diagnosis. In this article, we attempt to review the literature of the etiopathogenetic mechanisms and diagnosis with histopathological confirmation of the most common malabsorption syndromes.

The etiopathogenisis of fungal infections induced by systemic lupus erythematosus / 实用医学杂志

Objective To explore the etiopathogenisis of fungal infections induced by systemic lupus erythematosus (SLE). Methods One hundred and forty-seven SLE patients with fungal infections during 2004-2013 were assigned as experimental group and the same number of SLE patients without infections were randomly selected as control group. Clinical and laboratory documents of these patients were comparatively analyzed. Results The fungal infections in SLE patients affected oral mucosa , lower respiratory tract and skin , and the pathogenic bacteria were mainly candida albicans. The wide application of glucocorticoid, immunosuppressants and antibiotics pushed the rise of incidence of fungal infections in SLE patients significantly. Conclusions The patients′ use of glucocorticoid , immunosuppressants and antibiotics attributes to a higher risk of fungal infections , especially infections by candida albicans. Fungus infection may raise the level of C4.

La formulación psicodinámica del caso (fpc) / The psychodynamic formulation case (FPC)

La formulación psicodinámica del caso (fpc) parte de la perspectiva psicoanalítica para formular un caso clínico. Se refiere a la hipótesis del clínico tratante sobre los principales problemas del paciente, los factores que lo condicionan, el tratamiento planteado y su evolución. Las preguntas básicas a las que debe responder una formulación son los interrogantes básicos de la clínica: 1) ¿qué le pasa al paciente (dimensión diagnóstica); 2) ¿a qué se debe? (dimensión etiopatogénica); 3) ¿cómo se trata? (dimensión terapéutica), y 4) ¿con qué resultados?(dimensión evolutiva). Debe incluirse como un anexo a la historia clínica de entre 500 y 1.000 palabras. En este trabajo se destacan los elementos de la teoría psicoanalítica que mejor permiten responder a estas preguntas. Se toman contribuciones que reflejan avances actuales del conocimiento psicoanalítico, sostenidos por una fuerte evidencia clínica y empírica, el Manual de diagnóstico operacionalizado, OPD2, el Manual de diagnóstico psicodinámico, pdm y la escala de niveles de funcionamiento de la personalidad (lpfs) de la Sección iii del DSM-5. Estos aportes convergentes son de utilidad para la fpc y han sido tomados como base para este trabajo. Se propone una guía para la formulación psicodinámica del caso que orienta en los contenidos que deben ser incluidos

Atualização na etiopatogênese da esclerose sistêmica / Update on etiopathogenesis of systemic sclerosis

A Esclerose Sistêmica (ES) é uma doença autoimune de etiologia multifatorial, desencadeada pela combinação de fatores genéticos e ambientais. Sua variada expressão clínica resulta da complexa interação fisiopatogênica de três elementos principais: a vasculopatia proliferativa, a desregulação imunológica e a deposição e remodelamento anormais da matriz extracelular (MEC), da qual resulta a fibrose característica da doença. Eventos fisiopatogênicos precoces parecem ser a lesão endotelial e o desequilíbrio no reparo vascular, com a ativação de células endoteliais, do sistema imune e das plaquetas, com a liberação de múltiplos mediadores, como as citocinas proinflamatórias TH2 e os fatores de crescimento, desencadeando uma sequência de eventos simultâneos ou em cascata que envolve diversas vias de sinalização intracelular. O resultado mais importante desses eventos é a hiperativação dos fibroblastos, as principais células efetoras da fibrose, as quais passam a produzir grandes quantidades de constituintes da MEC e a secretar múltiplos fatores de crescimento e citocinas que perpetuam o processo. Neste artigo apresentamos uma revisão dos principais fatores potencialmente implicados na etiologia da ES e revisitamos os conhecimentos atuais sobre os mais importantes mecanismos envolvidos no desenvolvimento das lesões características da doença. O melhor entendimento desses mecanismos fisiopatogênicos possibilita identificar potenciais alvos terapêuticos, o que pode resultar em avanços no manejo dessa complexa e debilitante doença.

Systemic Sclerosis (SSc) is an autoimmune disease of multifactorial etiology, triggered by a combination of genetic and environmental factors. Its varied clinical expression results from the complex physiopathogenic interaction of three main elements: proliferative vasculopathy, immune dysregulation and abnormal deposition and remodeling of the extracellular matrix (ECM), of which the characteristic disease fibrosis is the result. Early physiopathogenic events appear to be endothelial injury and imbalance in vascular repair with the activation of endothelial cells, the immune system and platelets, with the release of multiple mediators such as TH2 proinflammatory cytokines and growth factors, triggering a sequence of simultaneous or cascading events that involve several intracellular signaling pathways. The most important result of these events is the hyperactivation of fibroblasts, the main effector cells of fibrosis, which will then produce large amounts of ECM constituents and secrete multiple growth factors and cytokines that perpetuate the process. In this article we review the main factors potentially involved in the etiology of SSc and reexamine the current knowledge about the most important mechanisms involved in the development of lesions that are characteristic of the disease. A better understanding of these physiopathogenic mechanisms will help identify potential therapeutic targets, which may result in advances in the management of this complex and debilitating disease.