1.90Yttrium-ibritumomab tiuxetan radioimmunotherapy for refractory follicular lymphoma.
Liao Cynthia U ; Goco Gerard FL ; Ongkeko Eduardo ES ; Elnar Evelyn D ; Sunga Adrian R ; Torres Michael T ; San Luis Jr Teofilo OL
The Philippine Journal of Nuclear Medicine 2010;5(1):17-20
This paper aims to discuss the sequential use of rituximab and 90Yttrium-ibritumomab tiuxetan, a novel treatment approach in the management of refractory follicular non-Hodgkin's lymphoma. Radioimmunotherapy (RIT), which combines the benefits of targeted radiation therapy and monoclonal antibody, has significantly increased the response rate well in excess of 50%. This is explained by the inherent radiosensitive nature of lymphoma cells. We present a case of a 56-year-old male with refractory follicular lymphoma. The patient was referred for RIT, the first case in the Philippines. The patient was pretreated with two doses of rituximab followed by an intravenous infusion of 90Y-ibritumomab tiuxetan (Zevalin). Hematologic nadir was reached six weeks following administration of the radioimmunotherapy. During this time, the patient developed melena. Hematologic recovery was noted after three weeks. Re-evaluation with computed tomography three months after treatment showed significant reduction in the tumor bulk and resolution of lymphadenopathies. This report underscores the importance and evolving role of radioimmunotherapy in the management of refractory non-Hodgkin's lymphoma.
Human ; Male ; Middle Aged ; Antibodies, Monoclonal ; Infusions, Intravenous ; Lymphadenopathy ; Lymphoma, Follicular ; Lymphoma, Non-hodgkin ; Melena ; Philippines ; Radioimmunotherapy ; Rituximab ; Tomography ; Yttrium Radioisotopes
2.A randomized double-blind comparison of fixed versus calculated radioiodine dose in the treatment of Graves' hyperthyroidism.
Miranda-Padua Maria Louella ; Cunanan Elaine C. ; Kho Sjoberg A. ; Marcelo Millicent ; Torres Juan F. ; Monzon Orestes P. ; San Luis Teofilo ; Milo Mario ; Mercado-Asis Leilani B.
Philippine Journal of Internal Medicine 2014;52(3):1-7
INTRODUCTION:Radioactive iodine(I131) therapy is an established definitive treatment for Graves' hyperthyroidism.However,the optimal method of determining the radioiodine treatment dose remains controversial.
OBJECTIVE: To compare the efficacy of fixed dose versus calculated dose regimen in the treatment of Graves' hyperthyroidism among Filipinos
METHODOLOGY: Diagnosed Graves' disease patients underwent thyroid ultrasound to estimate thyroid size. Patients were randomized to either fixed or calculated dose of radioiodine treatment. For fixed dose group,the WHO goiter grading was utilized: Grade 0 (5mCi), Grade 1 (7mCi), Grade2 (10mCi), Grade 3 (15mCi). For calculated dose group the following formula was used:
Dose(mCi)= 160uCi/g thyroid x thyroid gland weight in grams x 100 / 24-hour RAIU(%)
Thyroid function test (TSH,FT4) was monitored every three months for one year.
RESULTS: Of the 60 patients enrolled, 45 (fixed dose; n= 27, calculated dose; n= 18) completed the six months follow-up study. Analysis was done by application of the intention-to-treat principle. The percentage failure rate at third month in the fixed vs. calculated dose group was: 26 v. 28% with a relative risk (RR) value of 0.93. At six months post-therapy, there was a noted reduction in the failure rates for both study groups (11 vs. 22%, respectively), with a further reduction in the relative risk value (0.67), favoring the fixed dose group.
CONCLUSION: Fixed dose radioiodine therapy for Graves' disease is observed to have a lower risk of treatment failure (persistent hyperthyroidism) at three and six months post-therapy compared to the calculated dose.
Human ; Male ; Female ; Middle Aged ; Adult ; Iodine Radioisotopes ; Iodine ; Intention To Treat Analysis ; Graves Disease ; Hyperthyroidism ; Goiter ; Thyroid Function Tests ; Treatment Failure
3.Neostigmine for Treating Acute Colonic Pseudo-Obstruction in Neurocritically Ill Patients
Tae Jung KIM ; Luis TORRES ; Atzhiry PAZ ; Ji Sung LEE ; Soo-Hyun PARK ; Huimahn Alex CHOI ; Sang-Bae KO
Journal of Clinical Neurology 2021;17(4):563-569
Background:
and PurposeAcute colonic pseudo-obstruction (ACPO) is a common but understudied complication in neurocritically ill patients. The acetylcholinesterase inhibitor neostigmine can be used to treat ACPO in patients who do not respond to conventional treatment. This study investigated the effectiveness and adverse events when using neostigmine to manage ACPO in neurocritically ill patients.
Methods:
This retrospective study investigated patients with ACPO who were treated using neostigmine in the neurological intensive-care units at two centers between March 2017 and August 2020. Neostigmine was administered intravenously or subcutaneously (at doses ranging from 0.25 mg to 2 mg) according to the protocols at the two centers. The outcomes were bowel movements and the changes in colon diameters on abdominal radiographs. Safety events such as bradycardia, vomiting, salivation, and sweating were evaluated.
Results:
This study included 31 subjects with a mean age of 46.8 years (65.4% males). All patients had a bowel movement at a median of 120 minutes after administering neostigmine. The colon diameter decreased by a median of 17.5 mm (paired t-test: p<0.001) regardless of the dose and treatment protocols. Multilevel analysis confirmed that the mean colon diameter decreased from 66 mm pretreatment to 47.5 mm posttreatment (p<0.001), with an intraclass correlation coefficient of 13%. Three patients (9.7%) exhibited hypersalivation, sweating, bradycardia, and vomiting. Bradycardia (heart rate, 42 beats/minute) occurred in one patient (3.2%), and was successfully managed by injecting atropine.
Conclusions
Neostigmine injection is a safe and effective treatment option for ACPO in neurocritically ill patients who fail to respond to conservative management.
6.Relationship Between Occupational Safety and Health Policy Principles, Organizational Action on Work-related Stress and the Psychosocial Work Environment in Italy
Stavroula LEKA ; Luis TORRES ; Aditya JAIN ; Cristina Di TECCO ; Simone RUSSO ; Sergio IAVICOLI
Safety and Health at Work 2023;14(4):425-430
Background:
It is acknowledged that legislation acts as a motivator for organizational action on psychosocial risks. Our study aims to provide evidence on the relationship between key occupational safety and health (OSH) policy principles and organizational action on work-related stress, and, in turn, with reported employee job demands and resources and their experience of work-related stress. We focus on Italy where specific legislation and practices on work-related stress were introduced in 2008 which are underpinned by these key OSH policy principles.
Methods:
Secondary analysis of the Italian samples from the employer ESENER-2 and employee 6th EWCS surveys was conducted, using path analysis in structural equation modeling (SEM) linking the two datasets.
Results:
We found a strong statistically significant relationship between OSH policy principles and organizational action on work-related stress (C.I. = .62-.78 p < .001). The existence of an organizational action plan on work-related stress was found to be significantly associated with more reported job resources (C.I. = .02-.24, p < .05) but these were not found to be significantly associated with less work-related stress. No significant association was found between having an organizational action plan for work-related stress and reported job demands. However, job demands were significantly related to reported work-related stress (C.I. = .27-.47, p < .001).
Conclusions
Findings add support to the call for specific legislation on work-related psychosocial risks and highlight how an organizational OSH culture underpinned by key OSH principles, and awareness/competence development on psychosocial risk management can have a positive effect on organizational action. However, further support needs to be provided to organizations around developing primary prevention interventions at the organizational level with the aim of reducing job demands.
7.Neostigmine for Treating Acute Colonic Pseudo-Obstruction in Neurocritically Ill Patients
Tae Jung KIM ; Luis TORRES ; Atzhiry PAZ ; Ji Sung LEE ; Soo-Hyun PARK ; Huimahn Alex CHOI ; Sang-Bae KO
Journal of Clinical Neurology 2021;17(4):563-569
Background:
and PurposeAcute colonic pseudo-obstruction (ACPO) is a common but understudied complication in neurocritically ill patients. The acetylcholinesterase inhibitor neostigmine can be used to treat ACPO in patients who do not respond to conventional treatment. This study investigated the effectiveness and adverse events when using neostigmine to manage ACPO in neurocritically ill patients.
Methods:
This retrospective study investigated patients with ACPO who were treated using neostigmine in the neurological intensive-care units at two centers between March 2017 and August 2020. Neostigmine was administered intravenously or subcutaneously (at doses ranging from 0.25 mg to 2 mg) according to the protocols at the two centers. The outcomes were bowel movements and the changes in colon diameters on abdominal radiographs. Safety events such as bradycardia, vomiting, salivation, and sweating were evaluated.
Results:
This study included 31 subjects with a mean age of 46.8 years (65.4% males). All patients had a bowel movement at a median of 120 minutes after administering neostigmine. The colon diameter decreased by a median of 17.5 mm (paired t-test: p<0.001) regardless of the dose and treatment protocols. Multilevel analysis confirmed that the mean colon diameter decreased from 66 mm pretreatment to 47.5 mm posttreatment (p<0.001), with an intraclass correlation coefficient of 13%. Three patients (9.7%) exhibited hypersalivation, sweating, bradycardia, and vomiting. Bradycardia (heart rate, 42 beats/minute) occurred in one patient (3.2%), and was successfully managed by injecting atropine.
Conclusions
Neostigmine injection is a safe and effective treatment option for ACPO in neurocritically ill patients who fail to respond to conservative management.
8.Association between Heart Failure and Clinical Prognosis in Patients with Acute Ischemic Stroke: A Retrospective Cohort Study
Jose Luis Lozano VILLANUEVA ; Javier Francisco TORRES ZAFRA ; Fabián Cortés MUÑOZ ; Fernán del Cristo MENDOZA BELTRÁN ; Jenny Carolina Sánchez CASAS ; Luis Alfonso Barragán PEDRAZA
Journal of Clinical Neurology 2021;17(2):200-205
Background:
and Purpose Ischemic stroke is a common cause of death worldwide. In clinical practice it is observed that many individuals who have experienced an ischemic stroke also suffer from simultaneous comorbidities such as heart failure, which could be directly associated with a worse clinical prognosis. Therefore, this study analyzed outcomes in terms of the severity of the event, inhospital mortality, duration of hospital stay, and inhospital recurrence of the episode, in order to determine the implications resulting from the presentation of both pathologies.
Methods:
This was a retrospective-cohort, hospital-based study.
Results:
The study included 110 subjects with heart failure (exposed) and 109 subjects without heart failure (nonexposed). The incidence of inhospital mortality was 27.27% in exposed patients and 9.17% in nonexposed patients (p<0.001), and the presence of heart failure increased the risk of death by 92% (p=0.027). According to scores on the National Institutes of Health Stroke Scale, the median severity was worse in exposed than nonexposed patients (16.1 vs. 9.2, p=0.001). The median hospital stay was 9 days in subjects with heart failure and 7 days in nonexposed patients (p=0.011). The rate of inhospital stroke did not differ significantly between exposed and nonexposed patients (1.82% vs. 0.92%, p=0.566).
Conclusions
Individuals with heart failure who suffer from an acute ischemic stroke show worse clinical outcomes in terms of mortality, event severity, and duration of hospital stay.
9.Association between Heart Failure and Clinical Prognosis in Patients with Acute Ischemic Stroke: A Retrospective Cohort Study
Jose Luis Lozano VILLANUEVA ; Javier Francisco TORRES ZAFRA ; Fabián Cortés MUÑOZ ; Fernán del Cristo MENDOZA BELTRÁN ; Jenny Carolina Sánchez CASAS ; Luis Alfonso Barragán PEDRAZA
Journal of Clinical Neurology 2021;17(2):200-205
Background:
and Purpose Ischemic stroke is a common cause of death worldwide. In clinical practice it is observed that many individuals who have experienced an ischemic stroke also suffer from simultaneous comorbidities such as heart failure, which could be directly associated with a worse clinical prognosis. Therefore, this study analyzed outcomes in terms of the severity of the event, inhospital mortality, duration of hospital stay, and inhospital recurrence of the episode, in order to determine the implications resulting from the presentation of both pathologies.
Methods:
This was a retrospective-cohort, hospital-based study.
Results:
The study included 110 subjects with heart failure (exposed) and 109 subjects without heart failure (nonexposed). The incidence of inhospital mortality was 27.27% in exposed patients and 9.17% in nonexposed patients (p<0.001), and the presence of heart failure increased the risk of death by 92% (p=0.027). According to scores on the National Institutes of Health Stroke Scale, the median severity was worse in exposed than nonexposed patients (16.1 vs. 9.2, p=0.001). The median hospital stay was 9 days in subjects with heart failure and 7 days in nonexposed patients (p=0.011). The rate of inhospital stroke did not differ significantly between exposed and nonexposed patients (1.82% vs. 0.92%, p=0.566).
Conclusions
Individuals with heart failure who suffer from an acute ischemic stroke show worse clinical outcomes in terms of mortality, event severity, and duration of hospital stay.
10.Inhibition of Tumor Growth and Metastasis by Newcastle Disease Virus Strain P05 in a Breast Cancer Mouse Model
Oscar Antonio ORTEGA-RIVERA ; Pamela GALLEGOS-ALCALÁ ; Mariela JIMÉNEZ ; J. Luis QUINTANAR ; Flor TORRES-JUAREZ ; Bruno RIVAS-SANTIAGO ; Susana del TORO-ARREOLA ; Eva SALINAS
Journal of Breast Cancer 2023;26(2):186-200
Purpose:
Conventional therapies and surgery remain the standard treatment for breast cancer. However, combating the eventual development of metastasis is still a challenge.Newcastle disease virus (NDV) is one of the various species of viruses under clinical evaluation as a vector for oncolytic, gene-, and immune-stimulating therapies. The purpose of this study was to evaluate the antitumor activity of a recombinant NDV (rNDV-P05) in a breast cancer murine model.
Methods:
Tumors were induced by injecting the cellular suspension (4T1 cell line) subcutaneously. The virus strain P05 was applied three times at intervals of seven days, starting seven days after tumor induction, and was completed 21 days later. Determination of tumor weight, spleen index, and lung metastasis were done after sacrificing the mice.Serum levels of interferon (IFN)-α, IFN-γ, tumor necrosis factor (TNF)-α, and TNF-related apoptosis-inducing ligand (TRAIL) were quantified by enzyme-linked immunosorbent assay.CD8+ infiltrated cells were analyzed by immunofluorescence.
Results:
rNDV-P05 showed a route-of-administration-dependent effect, demonstrating that the systemic administration of the virus significantly reduces the tumor mass and volume, spleen index, and abundance of metastatic clonogenic colonies in lung tissue, and increases the inhibition rate of the tumor. The intratumoral administration of rNDV-P05 was ineffective for all the parameters evaluated. Antitumor and antimetastatic capability of rNDV-P05 is mediated, at least partially, through its immune-stimulatory effect on the upregulation of TNF-α, TRAIL, IFN-α, and IFN-γ, and its ability to recruit CD8+ T cells into tumor tissue.
Conclusion
Systemic treatment with rNDV-P05 decreases the tumoral parameters in the breast cancer murine model.