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1.
BMC Cancer ; 24(1): 396, 2024 Mar 29.
Article in English | MEDLINE | ID: mdl-38553708

ABSTRACT

BACKGROUND: Emerging data suggested a favorable outcome in advanced non-small cell lung cancer (NSCLC) with chronic obstructive pulmonary disease (COPD) patients treated by immunotherapy. The objective of this study was to investigate the effectiveness of neoadjuvant immunotherapy among NSCLC with COPD versus NSCLC without COPD and explore the potential mechanistic links. PATIENTS AND METHODS: Patients with NSCLC receiving neoadjuvant immunotherapy and surgery at Shanghai Pulmonary Hospital between November 2020 and January 2023 were reviewed. The assessment of neoadjuvant immunotherapy's effectiveness was conducted based on the major pathologic response (MPR). The gene expression profile was investigated by RNA sequencing data. Immune cell proportions were examined using flow cytometry. The association between gene expression, immune cells, and pathologic response was validated by immunohistochemistry and single-cell data. RESULTS: A total of 230 NSCLC patients who received neoadjuvant immunotherapy were analyzed, including 60 (26.1%) with COPD. Multivariate logistic regression demonstrated that COPD was a predictor for MPR after neoadjuvant immunotherapy [odds ratio (OR), 2.490; 95% confidence interval (CI), 1.295-4.912; P = 0.007]. NSCLC with COPD showed a down-regulation of HERV-H LTR-associating protein 2 (HHLA2), which was an immune checkpoint molecule, and the HHLA2low group demonstrated the enrichment of CD8+CD103+ tissue-resident memory T cells (TRM) compared to the HHLA2high group (11.9% vs. 4.2%, P = 0.013). Single-cell analysis revealed TRM enrichment in the MPR group. Similarly, NSCLC with COPD exhibited a higher proportion of CD8+CD103+TRM compared to NSCLC without COPD (11.9% vs. 4.6%, P = 0.040). CONCLUSIONS: The study identified NSCLC with COPD as a favorable lung cancer type for neoadjuvant immunotherapy, offering a new perspective on the multimodality treatment of this patient population. Down-regulated HHLA2 in NSCLC with COPD might improve the MPR rate to neoadjuvant immunotherapy owing to the enrichment of CD8+CD103+TRM. TRIAL REGISTRATION: Approval for the collection and utilization of clinical samples was granted by the Ethics Committee of Shanghai Pulmonary Hospital (Approval number: K23-228).


Subject(s)
Carcinoma, Non-Small-Cell Lung , Lung Neoplasms , Pulmonary Disease, Chronic Obstructive , Humans , Carcinoma, Non-Small-Cell Lung/drug therapy , Lung Neoplasms/genetics , Neoadjuvant Therapy , China , Pulmonary Disease, Chronic Obstructive/complications , Pulmonary Disease, Chronic Obstructive/therapy , Immunotherapy , Immunoglobulins
2.
Transl Lung Cancer Res ; 13(1): 16-33, 2024 Jan 31.
Article in English | MEDLINE | ID: mdl-38405002

ABSTRACT

Background: Anaplastic lymphoma kinase (ALK)-rearranged non-small cell lung cancer (NSCLC) exhibited a higher propensity for lymph node metastasis (LNM). This study aimed to investigate risk factors of occult lymph node metastasis (OLNM) and recurrence in resectable ALK-rearranged NSCLC patients. Methods: This retrospective analysis included patients with ALK-rearranged NSCLC receiving lung resections at Shanghai Pulmonary Hospital from June 2016 to August 2021. Logistic regression analysis was used to ascertain predictors of OLNM, and Cox regression analysis to identify risk factors of recurrence. Results: A total of 603 resectable ALK-rearranged NSCLC patients were included. The mean age was 55 years old. There were 171 patients (28.4%) pathologically confirmed to have LNM, 51.5% of which were occult. Logistic regression analysis identified clinical tumor size and computed tomography (CT) density as independent factors for OLNM. Cox regression analysis showed that pleural invasion and pathological tumor size were independent prognosticators for recurrence in pathologically nodal negative patients. Among pathologically nodal positive patients, adjuvant ALK-tyrosine kinase inhibitors (TKI) showed a similar recurrence-free survival (RFS) to chemotherapy (hazard ratio, 0.454; 95% confidence interval, 0.111-1.864). Conclusions: Assessing the potential risk of OLNM is required for ALK-rearranged NSCLC patients with large tumors characterized by high CT densities. Patients with large pathological tumor size or pleural infiltration should be closely monitored despite being pathologically nodal negative. Additionally, adjuvant ALK-TKI may present a comparable RFS to chemotherapy in pathologically nodal positive patients.

3.
Eur J Cardiothorac Surg ; 65(2)2024 Feb 01.
Article in English | MEDLINE | ID: mdl-38341657

ABSTRACT

OBJECTIVES: Tracheoesophageal fistula (TEF) is characterized by abnormal connectivity between the posterior wall of the trachea or bronchus and the adjacent anterior wall of the oesophagus. Benign TEF can result in serious complications; however, there is currently no uniform standard to determine the appropriate surgical approach for repairing TEF. METHODS: The PubMed database was used to search English literature associated with TEF from 1975 to October 2023. We employed Boolean operators and relevant keywords: 'tracheoesophageal fistula', 'tracheal resection', 'fistula suture', 'fistula repair', 'fistula closure', 'flap', 'patch', 'bioabsorbable material', 'bioprosthetic material', 'acellular dermal matrix', 'AlloDerm', 'double patch', 'oesophageal exclusion', 'oesophageal diversion' to search literature. The evidence level of the literature was assessed based on the GRADE classification. RESULTS: Nutritional support, no severe pulmonary infection and weaning from mechanical ventilation were the 3 determinants for timing of operation. TEFs were classified into 3 levels: small TEF (<1 cm), moderate TEF (≥1 but <5 cm) and large TEF (≥5 cm). Fistula repair or tracheal segmental resection was used for the small TEF with normal tracheal status. If the anastomosis cannot be finished directly after tracheal segmental resection, special types of tracheal resection, such as slide tracheoplasty, oblique resection and reconstruction, and autologous tissue flaps were preferred depending upon the site and size of the fistula. Oesophageal exclusion was applicable to refractory TEF or patients with poor conditions. CONCLUSIONS: The review primarily summarizes the main surgical techniques employed to repair various acquired TEF, to provide references that may contribute to the treatment of TEF.


Subject(s)
Plastic Surgery Procedures , Tracheoesophageal Fistula , Humans , Tracheoesophageal Fistula/surgery , Tracheoesophageal Fistula/etiology , Trachea/surgery , Surgical Flaps/surgery
4.
Int J Surg Pathol ; 32(1): 196-200, 2024 Feb.
Article in English | MEDLINE | ID: mdl-37143310

ABSTRACT

A congenital melanocytic nevus is a benign melanocyte proliferation, that may be complicated by malignant transformation. We are reporting a three-year-old girl, who had a giant congenital melanocytic nevus on her back, that was treated by serial surgical excisions with tissue expander insertion. Histopathological examination confirmed the diagnosis of congenital melanocytic nevus with ganglioneuroma. Out of approximately 250 case reports on congenital melanocytic nevus, we identified only two reports of medium/large congenital melanocytic nevus with cutaneous ganglioneuroma. Due to the potential malignant transformation of congenital melanocytic nevus, reporting the features and characteristics of such rare findings may help in further understanding congenital melanocytic nevus, its associations, and prognosis.


Subject(s)
Ganglioneuroma , Melanoma , Nevus, Pigmented , Skin Neoplasms , Female , Humans , Child, Preschool , Melanoma/diagnosis , Ganglioneuroma/complications , Ganglioneuroma/diagnosis , Ganglioneuroma/surgery , Skin Neoplasms/diagnosis , Skin Neoplasms/surgery , Skin Neoplasms/pathology , Nevus, Pigmented/complications , Nevus, Pigmented/diagnosis , Nevus, Pigmented/surgery , Cell Transformation, Neoplastic
5.
Bioinformation ; 19(4): 411-416, 2023.
Article in English | MEDLINE | ID: mdl-37822837

ABSTRACT

The majority of human tumors are characterized by abnormal signaling caused by oncogenic RAS proteins. KRAS is a member of the RAS family and is currently one of the most thoroughly researched targets for cancer treatment due to its prevalence in a variety of deadly malignancies. Targeting the KRAS protein, which plays a crucial role in regulating cell growth, differentiation, and apoptosis, shows great potential as a strategy for fighting cancer. Herein, in silico screening of 530 natural compounds against KRAS protein was performed. The top-scoring hits, namely ZINC32502206, ZINC98363763, ZINC85645815, and ZINC98364259 displayed a robust affinity towards KRAS as evidenced by their respective binding affinity values of -10.50, -10.01, -9.80, and -9.70 kcal/mol, respectively which were notably higher than that of the control compound AMG 510 (-9.10 kcal/mol). Through virtual screening and visual inspection, it was observed that these hits effectively interacted with the essential residues located within the active site of KRAS. Based on the findings of this study, it can be inferred that these compounds may have the potential to be employed in the treatment of cancer by targeting KRAS.

6.
Antibiotics (Basel) ; 12(9)2023 Sep 03.
Article in English | MEDLINE | ID: mdl-37760698

ABSTRACT

Cephalexin is a first-generation ß-lactam antibiotic used in adults and pediatrics to treat various streptococcal and staphylococcal infections. This review aims to summarize and evaluate all the pharmacokinetic (PK) data on cephalexin by screening out all pertinent studies in human beings following the per oral (PO) route. By employing different online search engines such as Google Scholar, PubMed, Cochrane Central, and Science Direct, 23 studies were retrieved, among which nine were in healthy subjects, five in diseased ones, and the remaining were drug-drug, drug-food, and bioequivalence-related. These studies were included only based on the presence of plasma concentration-time profiles or PK parameters, i.e., maximum plasma concentration (Cmax), half-life (t1/2) area under the curve from time 0-infinity (AUC0-∞), and clearance (CL/F). A dose-proportional increase in AUC0-∞ and Cmax can be portrayed in different studies conducted in the healthy population. In comparison to cefaclor, Cmax was recorded to be 0.5 folds higher for cephalexin in the case of renal impairment. An increase in AUC0-∞ was seen in cephalexin on administration with probenecid, i.e., 117 µg.h/mL vs. 68.1 µg.h/mL. Moreover, drug-drug interactions with omeprazole, ranitidine, zinc sulfate, and drug-food interactions for cephalexin and other cephalosporins have also been depicted in different studies with significant changes in all PK parameters. This current review has reported all accessible studies containing PK variables in healthy and diseased populations (renal, dental, and osteoarticular infections, continuous ambulatory peritoneal dialysis) that may be favorable for health practitioners in optimizing doses among the latter.

7.
Prev Med Rep ; 34: 102237, 2023 Aug.
Article in English | MEDLINE | ID: mdl-37214162

ABSTRACT

Parents are generally influencing the sun protection behaviors of their children, including sunscreen use. In Saudi Arabia, sunscreen use was estimated in adults but not children. The objective was to estimate the prevalence and predictors of sunscreen use among parents and their children. An observational cross-sectional study was conducted in April 2022. Parents who were visiting outpatient clinics at a university hospital in Al-Kharj city, Saudi Arabia, were invited to complete an online questionnaire. A total of 266 participants were included in the final analysis. The mean age of parents was 39.0 ± 8.9 years, and the mean age of children was 8.2 ± 3.2 years. The prevalence of sunscreen use was 38.7% in parents and 24.1% in their children. Females had higher sunscreen use than males in both parents (49.7% versus 7.2%, p < 0.001) and in children (31.9% versus 18.3%, p = 0.011). The most frequent sunburn protection measures practiced by children were wearing long-sleeved clothes (77.0%), sitting in the shade (70.6%), and wearing hats (39.2%). In multivariable analysis, predictors of sunscreen use in parents included female sex, history of sunburn, and sunscreen use by children. Independent predictors of sunscreen use in children included a history of sunburn, wearing hats, and practicing other sunburn protection measures on risky occasions, and sunscreen use in parents. Sunscreen use in parents and children in Saudi Arabia is still inadequate or limited. This calls for community/school intervention programs using educational activities and multimedia promotion. Further studies are needed.

8.
Children (Basel) ; 10(2)2023 Jan 19.
Article in English | MEDLINE | ID: mdl-36832317

ABSTRACT

Kaposi sarcoma is relatively common after solid organ transplantation, but very rare after hematopoietic stem cell transplant (HSCT). Here we are reporting a rare case of Kaposi sarcoma in a child after HSCT. An 11-year-old boy with Fanconi anemia was treated by haploidentical HSCT from his father. Three weeks after transplantation, the patient developed severe graft-versus-host disease (GVHD) which was treated by immunosuppressive therapy and extracorporeal photopheresis. Approximately 6.5 months after HSCT, the patient had asymptomatic nodular skin lesions over the scalp, chest, and face. Histopathological examination showed typical findings of Kaposi sarcoma. Later, additional lesions in the liver and oral cavity were confirmed. Liver biopsy was positive for HHV-8 antibodies. The patient was continued on Sirolimus which was already being used for the treatment of GVHD. Cutaneous lesions were also treated with topical timolol 0.5% ophthalmic solution. Within six months, cutaneous and mucous membrane lesions were completely resolved. Follow-up abdominal ultrasound and MRI showed the disappearance of the hepatic lesion.

9.
J Dermatolog Treat ; 33(8): 3127-3135, 2022 Dec.
Article in English | MEDLINE | ID: mdl-36125344

ABSTRACT

Syringomas are benign adnexal neoplasms that may induce psychological stress when they are large or disfiguring or present in delicate regions such as the periorbital area. Despite the availability of various lasers for syringomas, no consensus has been established on the optimal laser setting and side effects of these therapies. The current review aims at understanding the efficacy and safety of various laser therapies available for the treatment of syringomas. A literature search was carried out using PubMed and Ovid databases for articles published from Jan 2000 through Mar 2022. Screening the eligible articles yielded 27 studies, comprising clinical studies, case series, and case reports, which were included in this review. The CO2 laser is the most widely used ablative laser therapy but is usually associated with adverse events. Pinhole and multiple drilling methods using CO2 laser yielded excellent cosmetic results with minimal adverse effects. Fractional lasers reduced the downtime and complications compared to non-fractionated ones. Non-ablative fractional lasers could be advantageous in terms of easy operation, minimal side effects and moderate recovery period compared with ablative lasers. Large clinical trials are needed to generate strong evidence to guide clinicians in choosing the most appropriate laser therapy for syringoma treatment.


Subject(s)
Laser Therapy , Lasers, Gas , Sweat Gland Neoplasms , Syringoma , Humans , Syringoma/surgery , Syringoma/etiology , Sweat Gland Neoplasms/radiotherapy , Sweat Gland Neoplasms/surgery , Carbon Dioxide , Laser Therapy/adverse effects , Laser Therapy/methods , Lasers, Gas/adverse effects , Treatment Outcome
10.
Urol Ann ; 14(1): 67-72, 2022.
Article in English | MEDLINE | ID: mdl-35197706

ABSTRACT

AIM: Our aim was to evaluate Saudi patient knowledge and awareness regarding smoking as a risk factor for bladder cancer, kidney cancer, and erectile dysfunction (ED). SETTINGS AND DESIGN: This quantitative cross-sectional study was conducted across three major tertiary hospitals in Riyadh, the capital city of Saudi Arabia. MATERIAL AND METHODS: A self-administered questionnaire was distributed to 539 patients in the urology outpatient clinic. STATISTICAL ANALYSIS: Data were analyzed using the Statistical Package for the Social Studies 21.0. For descriptive statistics, the frequency was calculated for all study variables. Chi-squared test was used for categorical variables. P < 0.05 was considered statistically significant. RESULTS: A total of 539 urological patients completed the questionnaire. There were 460 (85.4%) male and 79 (14.6%) female respondents. Only 60.9%, 41.2%, and 36.9% of participants were aware that smoking was a risk factor for ED, kidney cancer, and bladder cancer, respectively. CONCLUSIONS: The knowledge and awareness were low among urological patients regarding smoking as a risk factor for urological diseases.

11.
Dermatol Res Pract ; 2020: 6627472, 2020.
Article in English | MEDLINE | ID: mdl-33376481

ABSTRACT

BACKGROUND: During the current COVID-19 pandemic, prevention is the key to limiting the spread of this disease. The frequent handwashing and use of sanitizers resulted in notable skin changes among some individuals. The aim of the study was to determine the prevalence and determinants of the new onset of dermatitis during the COVID-19 pandemic in a university population from Saudi Arabia. METHODS: A cross-sectional study was conducted using a self-administered online questionnaire by sending an invitation link to students and employees of Prince Sattam Bin Abdulaziz University in June 2020. A chi-squared test was used to note differences regarding hand and face dermatitis. RESULTS: Of the total 2356 participants, 34.8% reported skin changes or symptoms over hands, and 15.3% reported skin changes on their face during this pandemic. 88.7% of the participants reported a change in handwashing habits during the COVID-19 pandemic, and 62.2% of participants were not using any hand sanitizers before COVID-19 but began using them during the pandemic. There were significantly higher percentage of skin conditions in females (on hands (ScH): 42.6% and face (ScF):19.2%), individuals working in environments requiring frequent handwashing (ScH: 40.3% vs. ScF: 17.2%), those working in facilities where they have to interact with people during the pandemic (ScH: 41.1% vs. ScF: 18.7%), those encountering COVID-19 patients (ScH: 48.6% vs. ScF: 24.8%), those exposed to chemicals (ScH: 48.6% vs. ScF: 24.8%), and healthcare workers (ScH: 51.3% vs. ScF: 24.3%). CONCLUSION: It was found that during the pandemic, skin changes were common among the general population as well as among healthcare workers. The frequency of handwashing and the use of alcohol-based sanitizers were contributing factors for dermatitis. Although hygiene is an extremely important preventive measure in this pandemic, maintaining skin integrity is also vital. Appropriate knowledge and good practice can prevent dermatitis in this pandemic, with regular hydration of the skin being a key factor.

12.
J Family Med Prim Care ; 9(2): 877-882, 2020 Feb.
Article in English | MEDLINE | ID: mdl-32318438

ABSTRACT

BACKGROUND AND AIMS: Little is known about the prevalence of osteoporotic fracture, its sociodemographic correlates, and its comorbid conditions among the adult population of the Kingdome of Saudi Arabia (KSA). Hence, the present work aimed to assess the prevalence of adults at high risk of osteoporotic fracture in the presence of its known risk factors. As well, to determine the most commonly associated comorbidities of osteoporosis in Saudi Arabia. METHODS: A cross-sectional study was performed among 518 Saudi adults aged over 45 years in Al-Ahsaa city, KSA. The Arabic version of the fracture risk assessment FRAX without bone mineral density (BMD) was presented in an online questionnaire. RESULTS: The 10-year risk for major osteoporotic fracture was found in 50.81% of the participants; 23.48% of them were at high risk and 25.71% at moderate risk. Also, 26.27% of the respondents were at high risk of hip fracture. Significant correlates of osteoporotic fractures included female gender (P = 0.003), old age (P = 0.000), age at menopause (P = 0.000), low body mass index (BMI; P = 0.000), previous fracture (P = 0.000), alcohol consumption (P = 0.000), positive family history (P = 0.000), corticosteroids (P = 0.000), rheumatoid arthritis (P = 0.000), thyroid hyperactivity (P = 0.000), gonadal insufficiency (P = 0.000), chronic liver disease (P = 0.000), nutritional, or gestational disease (P = 0.000). CONCLUSION: More than a third of the surveyed population had osteoporosis, which was associated with many sociodemographic and clinical characteristics. Therefore, early interventions for osteoporosis and the prevention of other comorbidities may improve the outcome of osteoporosis.

13.
Dermatol Reports ; 12(3): 8774, 2020 Dec 22.
Article in English | MEDLINE | ID: mdl-33408841

ABSTRACT

Social media that is heavily used in Saudi Arabia has been linked to a negative impact on body image satisfaction. The objective of the current study was to examine the burden, determinants, and impacts of Body Dysmorphic Disorder (BDD) among a community sample of social media users in Saudi Arabia. The Internet-based cross-sectional study was conducted among social media users during January and February 2020. BDD was assessed using a validated BDD Questionnaire. A total of 1010 participants were included in the current analysis. A total of 42 (4.2%) met the criteria of BDD, with higher prevalence in younger participants. The defects of high concerns were skin disfigurements (64.2%) and hair issues (42.3%). BDD was significantly associated with spending a longer time on Snapchat and Instagram and less interest in religious topics. BDD group was more likely to compare their appearance with famous people in social media. BDD group reported more harassment and more history of psychiatric problems. There is a need to educate the public about the risk of BDD and to promote safe social networking.

14.
SAGE Open Med ; 7: 2050312119871066, 2019.
Article in English | MEDLINE | ID: mdl-31452886

ABSTRACT

OBJECTIVE: The aim of this study is to evaluate knowledge of and attitudes toward the lumbar puncture procedure among adults in Riyadh region, Saudi Arabia, 2018. METHODS: This study used a quantitative cross-sectional evaluation of the responses of adults aged ⩾18 years from the Saudi Telecom Company database in the Riyadh region of Saudi Arabia to an online survey between October and December 2018. The questionnaire included questions on knowledge, attitudes, and demography. The questionnaire was pretested and validated (Cronbach's alpha = 0.701). RESULTS: Of 1500 questionnaires, 1223 (81.5%) were returned and included in the analysis. In the study, 57.7% of the participants were aged 18-25 years, and 58.5% of the participants were females. Only 235 (19.2%) participants had an accepted knowledge level of lumbar puncture. The attitudes of the majority of the participants (n = 1151, 94%) to lumbar puncture were acceptable. A multivariate logistic regression test revealed a significant association between an acceptable knowledge level and acceptable attitude level (odds ratio = 2.30, 95% confidence interval = 1.06-5.66). A significant association was also found with ages over 46 years old (odds ratio = 12.99, 95% confidence interval = 4.45-37.9). The attitudes level toward lumbar puncture had a significant negative association among the participants who had a fear of injections in the lumbar region (odds ratio = 0.46, 95% confidence interval = 0.3-0.68). CONCLUSION: There is a lack of appropriate knowledge of the lumbar puncture procedure among the public which predict an unacceptable attitude toward lumbar puncture. Improvements in public education could improve public awareness of the clinical importance/value and complications of lumbar puncture.

15.
PLoS One ; 14(1): e0210255, 2019.
Article in English | MEDLINE | ID: mdl-30629649

ABSTRACT

Environmental degradation is causing global warming, which is of the utmost concern to both physical and social scientists. A number of potential determinants of environmental degradation are analysed in the literature. This study examines the role of government expenditure and financial development in environmental degradation in the context of the environmental Kuznets curve (EKC) hypothesis for the Venezuelan economy. Time series data have been analysed for this purpose. The long-term relationship between the variables in this study is established through a bounds test in the presence of an unknown structural break. The results of this study confirm the EKC hypothesis. It is found that energy use is harming the quality of the environment not only in the long run but also in the short run. This study finds a positive impact of government expenditure on environmental degradation, which indicates that the Venezuelan government is not taking its expenditure for a sustainable environment into account. Moreover, this study finds that financial development is hindering environmental degradation. This means that financial institutions in Venezuela can help to develop the concept of sustainable energy in the country and the Venezuelan government can reduce carbon emissions through financial development.


Subject(s)
Conservation of Natural Resources/economics , Economic Development , Financing, Government , Models, Theoretical , Renewable Energy , Budgets , Global Warming , Venezuela
16.
Onco Targets Ther ; 9: 2575-84, 2016.
Article in English | MEDLINE | ID: mdl-27217775

ABSTRACT

OBJECTIVE: Kirsten rat sarcoma (K-Ras) protein is a member of Ras family belonging to the small guanosine triphosphatases superfamily. The members of this family share a conserved structure and biochemical properties, acting as binary molecular switches. The guanosine triphosphate-bound active K-Ras interacts with a range of effectors, resulting in the stimulation of downstream signaling pathways regulating cell proliferation, differentiation, and apoptosis. Efforts to target K-Ras have been unsuccessful until now, placing it among high-value molecules against which developing a therapy would have an enormous impact. K-Ras transduces signals when it binds to guanosine triphosphate by directly binding to downstream effector proteins, but in case of guanosine diphosphate-bound conformation, these interactions get disrupted. METHODS: In the present study, we targeted the nucleotide-binding site in the "on" and "off" state conformations of the K-Ras protein to find out suitable lead compounds. A structure-based virtual screening approach has been used to screen compounds from different databases, followed by a combinatorial fragment-based approach to design the apposite lead for the K-Ras protein. RESULTS: Interestingly, the designed compounds exhibit a binding preference for the "off" state over "on" state conformation of K-Ras protein. Moreover, the designed compounds' interactions are similar to guanosine diphosphate and, thus, could presumably act as a potential lead for K-Ras. The predicted drug-likeness properties of these compounds suggest that these compounds follow the Lipinski's rule of five and have tolerable absorption, distribution, metabolism, excretion and toxicity values. CONCLUSION: Thus, through the current study, we propose targeting only "off" state conformations as a promising strategy for the design of reversible inhibitors to pharmacologically inhibit distinct conformations of K-Ras protein.

17.
J Occup Med Toxicol ; 10: 37, 2015.
Article in English | MEDLINE | ID: mdl-26435731

ABSTRACT

BACKGROUND: Occupational and environmental exposure to petroleum refinery products poses a great threat to human health. This study aimed to assess the lung function and Fractional Exhaled Nitric Oxide (FeNO) among petroleum refinery workers. METHODS: In this cross-sectional study, 112 participants (56 petroleum refinery workers with mean age 35.20 ± 1.62 years, and 56 age, weight, height, ethnicity and socioeconomically matched control subjects with mean age 30.02 ± 1.76 years) were recruited. A comprehensive clinical history and examination was conducted to decide whether to include in the study or not. Ventilatory lung function test parameters were recorded by using a Spirometer and Fractional Exhaled Nitric Oxide (FeNO) was measured by Niox Mino. RESULTS: A significant decline in lung function parameters FEV1 (p = 0.0001), FEV1/FVC Ratio (p = 0.01), PEF (p = 0.0001), FEF 25 % (p = 0.0001), FEF-50 % (p = 0.012) was observed among oil refinery workers compared to their matched controls. However, there was no difference in the mean values of FeNO between the groups. CONCLUSION: Subjects working in the petroleum refinery have significantly impaired lung functions. However, there was no change in the values of FENO between the groups. The lung function impairment pattern provide evidence in the favor of an obstructive lung disease.

18.
ScientificWorldJournal ; 2012: 859892, 2012.
Article in English | MEDLINE | ID: mdl-23319888

ABSTRACT

Some Saudi herbs and spices were analyzed. The results indicated that mustard, black cumin, and cress seeds contain high amount of fat 38.45%, 31.95% and 23.19%, respectively, as compared to clove (16.63%), black pepper (5.34%) and fenugreek (4.51%) seeds. Cress, mustard, black cumin and black pepper contain higher protein contents ranging from 26.61 to 25.45%, as compared to fenugreek (12.91%) and clove (6.9%). Crude fiber and ash content ranged from 6.36 to 23.6% and from 3.57 to 7.1%, respectively. All seeds contain high levels of potassium (ranging from 383 to 823 mg/100 g), followed by calcium (ranging from 75 to 270 mg/100 g), Magnesium (ranged from 42 to 102 mg/100 g) and iron (ranged from 20.5 to 65 mg/100 g). However, zinc, manganese and copper were found at low levels. The major fatty acids in cress and mustard were linolenic acid (48.43%) and erucic acid (29.81%), respectively. The lenoleic acid was the major fatty acid in black cumin, fenugreek, black pepper and clove oils being 68.07%, 34.85%, 33.03% and 44.73%, respectively. Total unsaturated fatty acids were 83.24, 95.62, 86.46, 92.99, 81.34 and 87.82% for cress, mustard, black cumin, fenugreek, black pepper and clove, respectively. The differences in the results obtained are due to environmental factors, production areas, cultivars used to produce seeds and also due to the different methods used to prepare these local spices.


Subject(s)
Environment , Fatty Acids/metabolism , Spices , Dianthus/chemistry , Dianthus/metabolism , Lepidium/chemistry , Lepidium/metabolism , Nigella sativa/chemistry , Nigella sativa/metabolism , Nutritive Value , Piper nigrum/chemistry , Piper nigrum/metabolism , Saudi Arabia , Sinapis/chemistry , Sinapis/metabolism , Trigonella/chemistry , Trigonella/metabolism
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