1.Concordance of hepatitis C virus subtyping by non-structural 5A and non-structural 5B sequencing.
Baclig Michael O. ; Chan Veronica F. ; Ramos John Donnie A. ; Gopez-Cervantes Juliet ; Natividad Filipinas F.
Acta Medica Philippina 2010;44(1):16-19
The non-structural 5B (NS5B) gene is the target region to identify hepatitis C virus (HCV) subtypes. However, it is not always possible to amplify this region because of inherently high sequence variability. Nucleotide sequences of the non-structural 5A (NS5A) and NS5B genes and its concordance were determined from patients infected with HCV genotype 1 (HCV-1). Among the 30 HCV-1 samples, 7 (23%) were identified as subtype 1a and 23 (77%) were identified as 1b by NS5A sequencing. Sequence analysis of the NS5B showed that 13 (43%) were identified as 1a and 17 (57%) were identified as 1b. Out of the 13 samples identified as 1a by NS5B, 6 (46%) were correctly identified by NS5A. Of the 17 samples identified as 1b by NS5B, 16 (94%) were correctly identified by NS5A. The presence of glutamic acid (E) or aspartic acid (D) at position 2225 in the NS5A differentiates 1a from 1b subtypes, respectively. This study showed that the NS5A sequencing can identify HCV-1a and 1b subtypes with predictive values of 86% and 70% of cases, respectively. The overall concordance with NS5B was 73%. NS5B sequence analysis remains to be the reference method to identify HCV-1 subtypes. NS5A sequencing may be used to complement NS5B sequencing in case the NS5B gene cannot be successfully amplified.
Human ; Male ; Female ; Aged ; Middle Aged ; Adult ; ; Aspartic Acid ; Genotype ; Glutamic Acid ; Hepacivirus ; Hepatitis C ; Nucleotides ; Sequence Analysis ; Viral Nonstructural Proteins
2.Non-Erosive Reflux Disease Manifested Exclusively by Protracted Hiccups.
Andres de HOYOS ; Edgar A ESPARZA ; Maria CERVANTES-SODI
Journal of Neurogastroenterology and Motility 2010;16(4):424-427
Hiccups are a benign physiological feature affecting almost everyone at one time or another. They tend to be short-lived and do not affect quality of life; however, there are various pathologies that may present with long-lasting hiccups. These are grouped into 3 categories according to their duration: acute, persistent and intractable or protracted hiccups. Intractable hiccups last longer than 2 months and are usually associated with more severe conditions. The association between intractable hiccups and reflux disease has not been previously documented by objective methods. This report describes the case of a 23-year-old female who presented with protracted hiccups; all other organic pathologies were ruled out, and endoscopy and conventional pH-metry confirmed a diagnosis of non-erosive reflux disease as the unique cause.
2-Pyridinylmethylsulfinylbenzimidazoles
;
Electric Impedance
;
Endoscopy
;
Female
;
Gastroesophageal Reflux
;
Hiccup
;
Humans
;
Proton Pump Inhibitors
;
Young Adult
3. Glycemic control in tuberculosis: Lessons learned from Taiwan
Min-Chih WANG ; Jorge CERVANTES
Asian Pacific Journal of Tropical Medicine 2019;12(10):438-441
The global epidemic of diabetes and tuberculosis poses challenges to the control of both diseases. Patients with tuberculosis and diabetes experience worse clinical manifestations, increased risk of treatment failure, recurrence, and death. Diabetes is also associated with risk for latent tuberculosis infection. Management of hyperglycemia reduces the risk and improves the outcome of tuberculosis in diabetic patients. Recent epidemiological studies from Taiwan have provided new and important information on the benefits of metformin in tuberculosis. When addressing the issue of multidrug-resistant tuberculosis, a shortened anti-tuberculous therapeutic regime seems a feasible approach for better cure rates, with less loss-to-follow.
4.Effect of brimonidine on anterior-chamber angle in patients with narrow angles
Johanna Timoteo-Cervantes ; Joseph Anthony Tumbocon ; Ma. Margarita Lat-Luna
Philippine Journal of Ophthalmology 2011;36(2):69-72
Objective:
This study investigated the effect of brimonidine on the anterior-chamber angle in eyes with narrow angles using noncontact three-dimensional anterior-segment analyzer Pentacam.
Methods:
Nine eyes with narrow angles were distributed to one of three treatment groups—single topical dose of 0.15% brimonidine tartrate, 0.5% timolol maleate (positive control), or balanced salt solution (negative control)—in a prospective, single-masked, crossover, comparative trial. The primary outcome measure was anterior-chamber angle at baseline, and 2 and 4 hours after instillation of the treatment drug. Secondary outcome measures were pupil diameter, intraocular pressure (IOP), and anterior-chamber depth and volume. After a two-week washout period, eyes were crossed over to the other treatment modes. All baseline and posttreatment measurements were taken. Repeated analysis of variance (ANOVA) was used for statistical analysis.
Results:
Anterior-chamber angle, depth, and volume did not differ significantly for all treatment groups. Brimonidine caused a significant decrease in pupil diameter, most notably 2 hours after instillation, from baseline of 2.36 ± 0.37 mm to 2.17 ± 0.35 mm. (p = 0.03). There was a significant decrease in IOP from baseline to hour 4 after treatment for both brimonidine (11.4 ± 2.2 to 9 ± 1.8 mm Hg, p < 0.001) and timolol (11.9 ± 2.3 to 9.4 ± 2.1 mm Hg, p = 0.003).
Conclusions
Brimonidine produced a miotic trend with no significant opening of the anterior-chamber angle in patients with narrow angles.
Brimonidine Tartrate
;
Miosis
;
Intraocular Pressure
5.Doxazosin Treatment Attenuates Carbon Tetrachloride-Induced Liver Fibrosis in Hamsters through a Decrease in Transforming Growth Factor beta Secretion.
Martin Humberto MUNOZ-ORTEGA ; Raul Wiliberto LLAMAS-RAMIREZ ; Norma Isabel ROMERO-DELGADILLO ; Tania Guadalupe ELIAS-FLORES ; Edgar DE JESUS TAVARES-RODRIGUEZ ; Maria DEL ROSARIO CAMPOS-ESPARZA ; Daniel CERVANTES-GARCIA ; Luis MUNOZ-FERNANDEZ ; Martin GERARDO-RODRIGUEZ ; Javier VENTURA-JUAREZ
Gut and Liver 2016;10(1):101-108
BACKGROUND/AIMS: The development of therapeutic strategies for the treatment of cirrhosis has become an important focus for basic and clinical researchers. Adrenergic receptor antagonists have been evaluated as antifibrotic drugs in rodent models of carbon tetrachloride (CCl4)-induced cirrhosis. The aim of the present study was to evaluate the effects of carvedilol and doxazosin on fibrosis/cirrhosis in a hamster animal model. METHODS: Cirrhotic-induced hamsters were treated by daily administration of carvedilol and doxazosin for 6 weeks. Hepatic function and histological evaluation were conducted by measuring biochemical markers, including total bilirubin, aspartate aminotransferase, alanine aminotransferase and albumin, and liver tissue slices. Additionally, transforming growth factor beta (TGF-beta) immunohistochemistry was analyzed. RESULTS: Biochemical markers revealed that hepatic function was restored after treatment with doxazosin and carvedilol. Histological evaluation showed a decrease in collagen type I deposits and TGF-beta-secreting cells. CONCLUSIONS: Taken together, these results suggest that the decrease in collagen type I following treatment with doxazosin or carvedilol is achieved by decreasing the profibrotic activities of TGF-beta via the blockage of alpha1- and beta-adrenergic receptor. Consequently, a diminution of fibrotic tissue in the CCl4-induced model of cirrhosis is achieved.
Adrenergic alpha-1 Receptor Antagonists/*pharmacology
;
Alanine Transaminase/blood
;
Animals
;
Aspartate Aminotransferases/blood
;
Bilirubin/blood
;
Carbazoles/*pharmacology
;
Carbon Tetrachloride
;
Collagen Type I/drug effects/metabolism
;
Cricetinae
;
Doxazosin/*pharmacology
;
Liver/metabolism/pathology
;
Liver Cirrhosis/blood/chemically induced/*drug therapy
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Liver Function Tests
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Propanolamines/*pharmacology
;
Serum Albumin/analysis
;
Transforming Growth Factor beta/blood/*drug effects
6.Common and distinct regulation of human and mouse brown and beige adipose tissues: a promising therapeutic target for obesity.
Xuejiao LIU ; Christopher CERVANTES ; Feng LIU
Protein & Cell 2017;8(6):446-454
Obesity, which underlies various metabolic and cardiovascular diseases, is a growing public health challenge for which established therapies are inadequate. Given the current obesity epidemic, there is a pressing need for more novel therapeutic strategies that will help adult individuals to manage their weight. One promising therapeutic intervention for reducing obesity is to enhance energy expenditure. Investigations into human brown fat and the recently discovered beige/brite fat have galvanized intense research efforts during the past decade because of their pivotal roles in energy dissipation. In this review, we summarize the evolution of human brown adipose tissue (hBAT) research and discuss new in vivo methodologies for evaluating energy expenditure in patients. We highlight the differences between human and mouse BAT by integrating and comparing their cellular morphology, function, and gene expression profiles. Although great advances in hBAT biology have been achieved in the past decade, more cellular models are needed to acquire a better understanding of adipose-specific processes and molecular mechanisms. Thus, this review also describes the development of a human brown fat cell line, which could provide promising mechanistic insights into hBAT function, signal transduction, and development. Finally, we focus on the therapeutic potential and current limitations of hBAT as an anti-glycemic, anti-lipidemic, and weight loss-inducing 'metabolic panacea'.
Adipose Tissue, Beige
;
metabolism
;
pathology
;
Adipose Tissue, Brown
;
metabolism
;
pathology
;
Animals
;
Cell Line
;
Energy Metabolism
;
Humans
;
Mice
;
Obesity
;
metabolism
;
pathology
;
therapy
7.Corrigendum: Surgical management of palatal teratoma (epignathus) with the use of virtual reconstruction and 3D models: a case report and literature review
Cynthia Minerva GONZALEZ-CANTU ; Pablo Juan MORENO-PEÑA ; Mayela Guadalupe SALAZAR-LARA ; Pablo Patricio Flores GARCÍA ; Fernando Félix MONTES-TAPIA ; Victor Hugo CERVANTES-KARDASCH ; Yanko CASTRO-GOVEA
Archives of Plastic Surgery 2021;48(6):723-723
8.Surgical management of palatal teratoma (epignathus) with the use of virtual reconstruction and 3D models: a case report and literature review
Cynthia Minerva GONZALEZ-CANTU ; Pablo Juan MORENO-PEÑA ; Mayela Guadalupe SALAZAR-LARA ; Pablo Patricio Flores GARCÍA ; Fernando Félix MONTES-TAPIA ; Victor Hugo CERVANTES-KARDASCH ; Yanko CASTRO-GOVEA
Archives of Plastic Surgery 2021;48(5):518-523
Epignathus is a rare congenital orofacial teratoma that arises from the sphenoid region of the palate or the pharynx. It occurs in approximately 1:35,000 to 1:200,000 live births representing 2% to 9% of all teratomas. We present the case of a newborn of 39.4 weeks of gestation with a tumor that occupied the entire oral cavity. The patient was delivered by cesarean section. Oral resection was managed by pediatric surgery. Plastic surgery used virtual 3-dimensional models to establish the extension, and depth of the tumor. Bloc resection and reconstruction of the epignathus were performed. The mass was diagnosed as a mature teratoma associated with cleft lip and palate, nasoethmoidal meningocele that conditions hypertelorism, and a pseudomacrostoma. Tridimensional technology was applied to plan the surgical intervention. It contributed to a better understanding of the relationships between the tumor and the adjacent structures. This optimized the surgical approach and outcome.
9.Behçet’s disease presenting with recurrent vulvar abscesses, oral ulcers, and skin pustules in the Philippines
Ramon B. Larrazabal Jr. ; Harold Henrison C. Chiu ; Cherie Ocampo-Cervantes
Acta Medica Philippina 2022;56(11):99-102
Behçet's disease (BD) is a systemic vasculitis characterized by recurrent acute vascular inflammation. There is currently limited epidemiological data in Southeast Asia. We discuss a 26-year-old woman who came to our institution for recurrent vulvar abscesses for a year. Physical examination showed labial, tongue, and vulvar ulcers. Pathergy test was negative and biopsy done were unremarkable . We diagnosed her clinically as a case of Behçet’s disease. We started her on colchicine 0.6 mg once daily and educated her on skin, oral, and perineal hygiene. On follow-up after one month, she noted resolution of her lesions. However, symptoms recurred in the last three months after discontinuing treatment. We used telemedicine to communicate due to the COVID-19 pandemic and lockdown, advising her to continue her medication. Timely diagnosis is essential in order to provide symptomatic relief and enhance patient education.
Behcet Syndrome
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Ulcer
;
Vasculitis
10.Primary cutaneous anaplastic large cell lymphoma in a 73-year-old Filipino male
Juan Antonio D. Cervantes ; Eunice Kaye M. Rayos-Lopez ; Ma. Teresita G. Gabriel ; Reynaldo L. Ugalde ; Johannes F. Dayrit
Journal of the Philippine Dermatological Society 2019;28(2):55-57
Introduction:
Primary cutaneous anaplastic large cell lymphoma (PCALCL) is an uncommonly encountered subtype
of cutaneous lymphoma under the classification of CD30-positive lymphoproliferative disorders which presents
histologically as large atypical lymphocytes with pleomorphic and anaplastic cytology that localizes to the dermis.
Although recurrent, PCALCL usually carries a good prognosis, with 5-year survival rates ranging from 85% to 95%.
Case Summary:
We report a 73-year-old elderly male who consulted at our out-patient department with a 3-year
and 6-month history of multifocal, gradually enlarging, erythematous nodules with dry, necrotic areas on the scalp,
right auricular area, left axillary area, right forearm, and right thigh, accompanied by loss of appetite and nontender
cervical, left axillary, and right inguinal lymphadenopathy. Previous skin punch biopsy and immunohistochemical
stain done by the patient’s preceding dermatologist was signed out as “suggestive” of pseudolymphoma. However,
management with intralesional corticosteroid injections provided no improvement. Skin punch biopsy done at our
institution revealed ALK negative (-) anaplastic large cell lymphoma. Patient was then referred to an oncologist,
however, the patient was lost to follow-up and succumbed to community acquired pneumonia.
Conclusion
This case highlights the importance of a thorough diagnostic assessment as recent studies indicate a
poorer prognosis of ALK (-) cases, with overall 5-year survival rates consistently below 50%.
Lymphoma
;
Lymphoma, Large-Cell, Anaplastic