Publications by authors named "Kimia Taghavi"

12 Publications

  • Page 1 of 1

The incidence of mTOR marker in tracheal adenoid cystic carcinoma by immunohistochemical staining.

Adv Respir Med 2020 ;88(4):305-312

Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Introduction: There is an association between the activation of mammalian target of rapamycin (mTOR) signaling and aggressive tumor growth in multiple forms of cancer,including adenoid cystic carcinoma (ACC). ACCs are uncommon yet a malignant form of neoplasms that arises within the secretory glands. Therefore, the aim of this study was to investigate the increase of mTOR in the ACC tumors in order to survey the possibility of treating these tumors with mTOR inhibitors.

Material And Methods: Samples from known cases of the lung and tracheal ACC were retrievedfrom the archives of the pa-thology department of Masih Daneshvari hospital, and immunohistochemical (IHC) staining for mTOR was performed on them. After preparation of the blocks with specific antibodies, tumor cells with cytoplasmic and/or nuclear expression of mTOR were considered as positive cells by applying a specific scoring method introduced in this study.

Results: The paraffin blocks of 26 patients were surveyed and the IHC marker of mTOR was positive in the tumors of 10 patients (38.5%). Out of 10 mTOR positive cases, 5 were females and 5 were males. The primary site of the surveyed tumors was the trachea and bronchus in 12 cases (46%), salivary glands in 7 individuals (27%), and lung tissue in 7 cases (27%), and there was no significant correlation between the primary site of the ACC tumors and the existence of the mTOR markers in them (P = 0.67). From all cases, 13 patients (50%) had cribriform and tubular cells without solid components, 9 cases (34.6%) had cribriform and tubular with less than 30% of solid components, and 4 cases (15.4%) had cribriform and tubular cells with more than 30% of solid com-ponents. There was no significant difference between the morphologies and the existence of mTOR markers in them (P = 0.741).

Conclusions: As the incidence of mTOR markers is seen in patients with tracheal ACC, evaluation and scoring of mTOR in these persons can be helpful as further studies can distinguish the use of it in the treatment of the disease. .
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http://dx.doi.org/10.5603/ARM.a2020.0120DOI Listing
January 2020

Abdominal Compartment Syndrome in Critically Ill Patients.

Open Access Maced J Med Sci 2019 Apr 13;7(7):1097-1102. Epub 2019 Apr 13.

Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Background: Abdominal compartment syndrome patients suffer severe obstacles such as kidney failure and shock. To evade further complications, identifying the abdominal compartment syndrome (ACS) and Intra-abdominal hypertension (IAH), in critically ill individuals and hospitalised in the intensive care unit (ICU) is obligated.

Aim: The current study intended to study the abdominal compartment syndrome and the concomitant risk factors among hospitalised patients in ICU, by using the Intra-abdominal pressure test.

Material And Methods: One hundred and twenty-five hospitalised patients at ICU entered the current survey. Abdominal pressure was measured by standard intravesical technique. The SPSS 21 analysed the preoperative and intraoperative factors such as demographic records and comorbidities.

Results: Seventy-three (58.4%) participants were males and 52 (41.6%) were women in the mean age of 55.1 ± 18.3 years. Eighty-nine patients (71.2%) showed normal intra-abdominal pressure since 31 patients (24.8%), and 5 patients (4%) developed IAH and ACS. The intra-abdominal pressure (IAP) applied to Glasgow Coma Scale (GCS), Acute Physiology, shock, Systemic Inflammatory Response Syndrome (SIRS), central venous oxygen saturation and Chronic Health Evaluation (APACHE II) score (P < 0.05). Patients with high IAP have shown a higher mortality frequency, compared to others (P < 0.05).

Conclusion: Current findings showed a correlation between IAP hospitalised patients in ICU and shock, SIRS, APACHE II, central venous oxygen saturation and GCS. Intra-abdominal pressure test, as a valuable prognosis test for the abdominal compartment syndrome (ACS) and Intra-abdominal hypertension (IAH), may offer better results when added to the routine medical checkup of ICU patients.
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http://dx.doi.org/10.3889/oamjms.2019.228DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6490480PMC
April 2019

Procalcitonin and Proinflammatory Cytokines in Early Diagnosis of Bacterial Infections after Bronchoscopy.

Open Access Maced J Med Sci 2019 Mar 27;7(6):913-919. Epub 2019 Mar 27.

Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Background: Fiberoptic bronchoscopy (FOB) guided bronchoalveolar lavage (BAL) remains as the chief diagnostic tool in respiratory disorders. 1.2-16% of patients frequently experience fever after bronchoscopy. To exclude the need for multiple antibiotic prescribing in patients with post-bronchoscopy fever, the presence of the self-limiting inflammatory responses should be excluded.

Aim: The current study was conducted to test the serum of patients undergoing bronchoscopy for some proinflammatory cytokines including Tumor Necrosis Factor-alpha (TNF-ɑ), Interleukin-1beta (IL-1β), Interleukin-8 (IL-8) and Interleukin-6 (IL-6) and the value of Procalcitonin (PCT).

Material And Methods: Current case-control study was conducted at the National Research Institute of Tuberculosis and Lung Disease in Iran. Nineteen patients (48.72%) that attended with a reasonable sign for a diagnostic bronchoscopy from January 2016 to December 2017 were included in the case group. The control group consisted of 20 patients who underwent a simple bronchoscopy and without FOB-BAL. The laboratory findings for PCT concentrations and cytokine levels in the three serum samples (before FOB-BAL (t0), after 6 hr. (t1), and at 24 hr. past (t2) FOB-BAL) were compared between two groups.

Results: The frequency of post-bronchoscopy fever was 5.12, and the prevalence of post-bronchoscopy infectious fever was 2.56%. PCT level was considerably higher in the patient with a confirmed bacterial infection when compared to other participants (p-value < 0. 05). Interestingly, IL-8 level in the bacterial infection proven fever patient was higher than in other patients (p < 0.001). IL-8 levels displayed a specificity of 72.7% and a sensitivity of 100%, at the threshold point of 5.820 pg/ml. PCT levels had a specificity of 84% and a sensitivity of 81%, at the threshold point of 0.5 ng/ml.

Conclusion: The present findings show that in patients with fever after bronchoscopy, PCT levels and IL-8 levels are valuable indicators for antibiotic therapy, proving adequate proof for bacterial infection. The current findings also illustrate that to monitor the serum levels of PCT and proinflammatory cytokines in the patients undergoing FOB-BAL, the best time is the 24-hour postoperative bronchoscopy.
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http://dx.doi.org/10.3889/oamjms.2019.208DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6454165PMC
March 2019

Renal Disorders in Pulmonary Sarcoidosis Patients.

Iran J Kidney Dis 2019 Jan;13(1):21-26

Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Introduction: The frequency of kidney disorders varies in pulmonary sarcoidosis patients. Since the prevalence of kidney disorders among Iranian sarcoidosis patients is uncertain, this study aimed to evaluate kidney disorders and associated manifestations in Iranian pulmonary sarcoidosis patients.

Materials And Methods: One hundred patients with confirmed granuloma as pulmonary sarcoidosis were studied for renal disorders. Size of urinary tract and the presence of renal stones were checked via clinical examination and urinary organ ultrasonography. Patients' 24-hour urine sample was examined for pH, calcium, protein (over 250 mg) and creatinine (over 1.4 mg).

Results: Thirty-three percent of the patients expressed renal disorders simultaneously.Uric acid in pulmonary sarcoidosis patients could be correlated with the probability of developing renal stone. In addition, 1,25-dihydroxyvitamin D levels above 30 ng/mL and uric acid levels above 7 mg/dL in urine were directly correlated with renal disorders in sarcoidosis patients.

Conclusions: Urinalysis is an easy and reliable method for assessing renal disorders in sarcoidosis patients. The current study proposes inclusion of urinalysis in routine checkups of sarcoidosis individuals.
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January 2019

Serum Interleukin-27 Level in Different Clinical Stages of Lung Cancer.

Open Access Maced J Med Sci 2019 Jan 5;7(1):45-49. Epub 2019 Jan 5.

Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Background: Advanced lung cancer is indicated with rapid disease development. Interleukin 27 (IL-27) is regarded as a cytokine with anti-tumour activities.

Aim: Since, the impact of type of lung cancer on the level of IL-27 in patient's serum has not yet been investigated; current study evaluated the clinical stages according to American Joint Committee on Cancer (AJCC) criteria, Tumor-Node-Metastasis (TNM) stage and the lung cancer spread (localized or widespread) and it's correlation with serum IL-27.MATERIAL AND METHODS: Thirty patients with confirmed histopathological lung cancer and 30 cancer-free healthy individuals as the control group were included in the current study. Patients group were assigned to either small cell lung cancer group (SCLC) or non-small cell lung cancer (NSCLC) according to the clinical features and the results of lung biopsy specimens. Level of IL-27 was quantified with enzyme-linked immunosorbent assay (ELISA) test in serum samples.

Results: A significant increase in serum IL-27 level was noticed in individuals with lung cancer in comparison with the control group. The level of serum IL-27 in the NSCL squamous carcinoma (NSCLC-Sc) type was significantly greater than in the NSCLC adenocarcinoma (NSCLC-Ad) type, and in both groups, this variable was more than the control group. The serum IL-27 content level was greater in stage III versus stage IV.

Conclusion: The current research confirmed the existence of the anti-tumour components in patients with NSCLC. IL-27 can be utilised in diagnosis and screening in early stages of lung cancer along with the management of patients. Different levels of IL-27 in different types of lung cancers in the current study can lead to design more comprehensive studies in the future.
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http://dx.doi.org/10.3889/oamjms.2019.018DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6352477PMC
January 2019

Association Between Vitamin D Deficiencies in Sarcoidosis with Disease Activity, Course of Disease and Stages of Lung Involvements.

J Med Biochem 2018 Apr 1;37(2):103-109. Epub 2018 Apr 1.

Mycobacteriology Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Masih Daneshvari Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Background: Despite negative association between 25-hydroxy vitamin D and incidence of many chronic respiratory diseases, this feature was not well studied in sarcoidosis. Current study investigated the association between 25-hydroxy vitamin D deficiency with sarcoidosis chronicity, disease activity, extra-pulmonary skin manifestations, urine calcium level and pulmonary function status in Iranian sarcoidosis patients. Results of this study along with future studies, will supply more effective programs for sarcoidosis treatment.

Methods: Eighty sarcoidosis patients in two groups of insufficient serum level and sufficient serum level of 25-hydroxy vitamin D were studied. Course of sarcoidosis was defined as acute and chronic sarcoidosis. Pulmonary function test (PFT) was assessed by spirometry. Skin involvements were defined as biopsy proven skin sarcoidosis. 24-hour urine calcium level was used to specify the disease activity. Stages of lung involvements were obtained by CT-scan and chest X-ray. The statistical analyses were evaluated using Statistical Package for the Social Sciences.

Results: A significant negative correlation was obtained between vitamin D deficiency in sarcoidosis patients and disease chronic course and stages two to four of lung involvements. Considering other parameters of the disease and vitamin D deficiency, no significant correlation was detected.

Conclusions: In conclusion, results of the current study implies in the role of vitamin 25(OH)D deficiencies in predicting the course of chronic sarcoidosis. Furthermore, it was concluded that vitamin 25(OH)D deficiency can direct pulmonary sarcoidosis toward stage 2-4 of lung involvements.
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http://dx.doi.org/10.1515/jomb-2017-0041DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6294100PMC
April 2018

A Rare Report of Lung Metastasis of the Common Non-Melanotic Skin Cancer.

Tanaffos 2018 Jan;17(1):62-65

Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Disease (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Basal cell carcinoma is a common non-melanotic skin cancer with a prevalence of 74.5%-82.6% in the Iranian population. BCC rarely metastasizes. However, metastasis can cause significant morbidity. The prevalence of metastatic basal cell carcinoma varies between 0.0028% and 0.55% of all cases. We describe a case of lung metastasis of basal cell carcinoma of the scalp.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6087531PMC
January 2018

Evaluation of the Reliability and Validity of the Persian Version of the Fatigue Assessment Scale in Iranian Sarcoidosis Patients.

Open Access Maced J Med Sci 2018 Jul 14;6(7):1310-1314. Epub 2018 Jul 14.

Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Introduction: Fatigue is one of the common symptoms of sarcoidosis, which occurs in about 50-70% of patients.

Aim: Considering that there are no valid Iranian questionnaires for evaluating fatigue in sarcoidosis, in the present study, for the first time, we translated Fatigue Questionnaire into Persean and evaluated its validity and reliability among Iranian patients with sarcoidosis.

Material And Methods: In methodological research, English version of Fatigue assessment scale (FAS) 10 items questionnaire which is designed to assess physical or mental fatigue in chronic disease patients, was translated into Persian and back-translated into English. Its validity and reliability were studied on the one hundred and thirteen confirmed sarcoidosis patients are referring to respiratory referral hospital of Iran. Reliability analysis was performed by estimation of Cronbach`s alpha test.

Results: According to the cut-off point of 22.84 (74%) of the studied patients were suffering from fatigue. The internal consistency calculation revealed that the alpha value of the physical fatigue and mental fatigue was 0.945 and 0.896, respectively.

Conclusion: We concluded that the existence of questions number 4 and 10 in the questionnaire reduces the continuity of the questions, and therefore we suggest applying the FAS questionnaire without the two questions 4 and 10. This study showed that FAS questionnaire was very practical and can routinely be applied to assess the fatigue scale in sarcoidosis patients.
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http://dx.doi.org/10.3889/oamjms.2018.242DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6062278PMC
July 2018

High-Frequency Jet Ventilation in Nonintubated Patients.

Turk Thorac J 2018 Jul 1;19(3):127-131. Epub 2018 Jul 1.

Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Objectives: High-frequency jet ventilation (HFJV) is a convenient method for providing ventilation during fiberoptic bronchoscopy. We describe an incipient approach of high-frequency jet ventilation via the working channel of a flexible bronchoscope for nonintubated patients who suffer from hypoxemia during bronchoscopy. The aim of this study was to test the efficacy of this incipient approach and determine the possible complications related to it.

Materials And Methods: Sixteen patients who had oxygen saturation below 70% that did not resolve with nasal oxygen for 20 s during interventional bronchoscopy were included in the study. High-frequency jet ventilation was administrated via the working channel of a bronchoscope for 3 min. Arterial blood gas circumscriptions were compared before and after jet ventilation.

Results: Oxygen saturation increased to >90% in all patients 30 s after jet ventilation. Mean arterial oxygen saturation pressure increased from 54.84 to 111.98 mmHg with jet ventilation (p=0.0001). Arterial carbon dioxide tension decreased after jet ventilation. The body mass index had no consequential effect on arterial carbon dioxide pressure after jet ventilation in our patients (p=0.1). Complications such as pneumothorax and working channel damage were not observed.

Conclusion: High-frequency jet ventilation via the working channel of the bronchoscope is a novel method that can provide optimal ventilation with minimal complications to nonintubated patients suffering from hypoxemia during bronchoscopy. This method also reduces the duration of bronchoscopy procedures.
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http://dx.doi.org/10.5152/TurkThoracJ.2018.17025DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6077008PMC
July 2018

Application of Microwave Ablation for Treating Pulmonary Adenocarcinoma: A Case Report.

Tanaffos 2017 Jun;16(4):304-308

Chronic Respiratory Diseases Research Center, NRITLD, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Pulmonary metastases occasionally do not respond to chemotherapy and surgery. Moreover, some early stage cancer patients, who are candidates for surgery, are unable to tolerate surgery. In such cases, microwave ablation is a convenient alternative for tumor eradication. Microwave ablation has low morbidity and mortality rates compared to traditional cancer treatments. Moreover, the lower procedural cost, potential to perform treatment in an outpatient setting, and repeatability are beneficial aspects of this technique. Herein, we report an adenocarcinoma case that was potentially unsuitable for surgery and was treated with percutaneous microwave pulmonary tumor ablation in August 2015 at the Bronchoscopy and Laser ward of the Shahid Beheshti Medical University, Iran.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5971762PMC
June 2017

Molecular Epidemiology Analysis of TB in Five Regional States of Iran.

Tanaffos 2013 ;12(1):26-30

Clinical Tuberculosis and Epidemiology Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical science, Tehran, Iran.

Background: The increasing prevalence of TB drug resistant strains in absence of recent transmission evidence, highlights the need for an improved control program, coupled with a need to improve detection rate and early diagnosis. IS6110-RFLP is a means of genotyping TB clinical samples. In this study IS6110- RFLP was used for specification and quick tracking of TB infection source, transmission and reactivation of infection, in Iran.

Materials And Methods: This study was carried out on 258 TB patients from Tehran, Mashhad, Isfahan, Shiraz and Ahwaz. DNA from positive cultures was extracted and digested by PVUII restriction enzyme. The digested sequences were separated based on the size on agar gel and then southern Blot was transferred on the membrane. IS6110 probe was marked by HRD and hybridized to the target parts along genome.

Results: Sixty-one strains (24%) showed similar patterns (Recent transmission) and 197 strains (76%) showed different IS6110 patterns (Reactivation). Average number of IS6110 copies was between 10-11 bands. Frequency of IS6110 similar pattern was 11.46 in Afghan immigrants and 10.68 in Iranians.

Conclusion: High diversity of IS6110, indicates that 76% of the patients have been infected through reactivation by different sources, while 24% have been infected due to recent transmission. Observing different antibiogram patterns in patients infected with the same strain indicated vast transmission of a single strain in the society. A susceptible strain can be changed into mono drug resistant and MDR strain in the transition period.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4153234PMC
September 2014

Rapid Detection of Isoniazid Resistance in Mycobacterium tuberculosis by a Single Multiplex Allele-specific Polymerase Chain Reaction Assay.

Cell J 2011 24;13(2):97-102. Epub 2011 Aug 24.

1. Mycobacteriology Research Centre, Shahid Beheshti Medical University, Tehran, Iran.

Objective: Global surveillance has shown that drug resistant (DR) tuberculosis (TB) is widespread. Prompt detection of Mycobacterium tuberculosis drug resistance is essential for effective control of TB. The most frequent mutations associated with Isoniazid (INH) resistance in Mycobacterium are substitutions at codons 315 in the katG gene and the mabA-inhA promoter region (-15). This survey evaluated INH resistant-associated mutations in order to determine rapid detection of TB resistance.

Materials And Methods: Through a descriptive cross- sectional study total of 96 sputum specimens were digested, examined microscopically for acid-fast bacilli and inoculated into Löwenstein-Jensen slants. Thereafter, the susceptibility and identification tests were performed on culture positive specimens. Subsequently, the strains were subjected to multiplex allele-specific polymerase chain reaction (MAS-PCR) targeting in the codons 315 in the katG gene and the mabA-inhA promoter region. Distinct PCR banding patterns were observed for different mutation profiles.

Results: Drug susceptibility testing revealed that out of 96 available isolates, 30 (31.3%) were susceptible, 36 (37.5%) had multi-drug resistance (MDR-TB) and 30 (31.3%) showed mono- drug resistance. In comparison with the culture-based phenotypic drug susceptibility test, the sensitivity and specificity of MAS-PCR assay for drug resistance-related genetic mutations were 76.7% and 71.4%, respectively. The correlation between MAS-PCR and culture-based phenotypic drug susceptibility testing findings was 99.4%.

Conclusion: The profile of the isolates suggests a significant number of different DR strains with a high frequency of mutations at codon 315 of the katG gene. MAS-PCR provides a rapid, simple and cost-effective method for detecting MDR-TB.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3584461PMC
March 2013