1
|
Tank ND, Rupani MP, Shah IA, Dhatrak SV. Prevalence and predictors of high-frequency hearing loss among mine workers in Gujarat, western India: a cross-sectional study on the need to implement a comprehensive hearing conservation program. Int Arch Occup Environ Health 2024; 97:365-375. [PMID: 38421415 DOI: 10.1007/s00420-024-02050-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 01/22/2024] [Indexed: 03/02/2024]
Abstract
BACKGROUND High-frequency hearing loss (HFHL) stands as a prevalent occupational morbidity globally, with numerous associated risk factors, some of which are modifiable. In the context of a comprehensive hearing conservation program, the initial steps involve early screening and identification of workers with these modifiable risk factors, aiming to reduce the prevalence of hearing loss. Our objective was to estimate the prevalence of HFHL and determine its predictors among mine workers. METHODS We conducted a cross-sectional study among 226 mine workers in ten open-cast mines in Gujarat state, the western part of India, in November 2020. We collected data on socio-demography, addiction, occupation history and comorbidities, along with anthropometric, blood pressure, and blood sugar measurements. Audiometric evaluations using a portable diagnostic audiometer were employed to assess HFHL, defined as a hearing threshold exceeding 25 decibels (dB) at high frequencies (3000, 4000, 6000, and 8000 Hz). A generalized linear model (GLM) with a binomial family was performed to determine the predictors significantly predicting HFHL after adjusting for confounding variables. RESULTS The prevalence of HFHL was 35% (95% CI: 29-42%) in our study setting. Office workers demonstrated a prevalence of 19%, whereas other job categories displayed a higher prevalence of 42%, resulting in a significant prevalence difference of 23% and a prevalence ratio of 2.2. The GLM analysis revealed that variables, such as noise exposure during work [adjusted prevalence ratio (aPR) 2.3 (95% CI: 1.2-4.7, p = 0.018)] and noise exposure duration [aPR 1.1 (95% CI: 1.0-1.1, p = 0.042)], were significant predictors of HFHL. CONCLUSIONS In our study setting, mine workers exhibited a high prevalence of HFHL, with exposure to workplace noise and duration being modifiable predictors. Because HFHL advances slowly and is generally undetected by the individual, we recommend periodic testing using audiometry to identify it among mine workers and, if possible, shifting them from mining activities to office. Furthermore, we advocate for the implementation of a comprehensive hearing conservation program to the extent possible.
Collapse
Affiliation(s)
- Nitishkumar D Tank
- Poison Information Center, Division of Health Sciences, ICMR - National Institute of Occupational Health (NIOH), Meghani Nagar, Near Raksha Shakti Circle, Ahmedabad, Gujarat, 380016, India
| | - Mihir P Rupani
- Clinical Epidemiology, Division of Health Sciences, ICMR - National Institute of Occupational Health (NIOH), Meghani Nagar, Ahmedabad, Gujarat, 380016, India
| | - Immad A Shah
- Clinical Epidemiology, Division of Health Sciences, ICMR - National Institute of Occupational Health (NIOH), Meghani Nagar, Ahmedabad, Gujarat, 380016, India
| | - Sarang V Dhatrak
- Poison Information Center, Division of Health Sciences, ICMR - National Institute of Occupational Health (NIOH), Meghani Nagar, Near Raksha Shakti Circle, Ahmedabad, Gujarat, 380016, India.
| |
Collapse
|
2
|
Dhatrak SV, Shah IA, Prajapati SS. Determinants of discomfort from combined exposure to noise and vibration in dumper operators of mining industry in India. J Occup Environ Hyg 2024:1-8. [PMID: 38593444 DOI: 10.1080/15459624.2024.2328296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
In the mining industry, dumper operators are exposed to combined noise and vibration, leading to discomfort. Dumpers are heavy earth-moving machines that are used for carrying bulky material in mining industries. Dumper operators are exposed to physical hazards such as vibration, noise, heat, and humidity, throughout their lifetime of work. Fifty-four dumper operators working in mines were selected for this study. Noise was measured as per the guidelines of the Directorate General Mining Safety, India, and whole-body vibration was measured as per the guidelines of ISO 2631-1::1997. Noise Pro DLX, Type 2 noise dosimeters were used for the measurement of personal noise exposure while SV-106 six channels vibration meters were used for whole body vibration (WBV) exposure measurement. Discomfort was calculated using the regression equation developed by Huang and Griffin (2014). The total discomfort level of mine operators was about 192. A predictive equation was derived by using a regression model to determine the contribution of individual variables causing discomfort. It was observed that for every unit increase in noise (LAeq), discomfort increased by 10.20 units, a one-unit increase in vibration (A (8)) led to a 51.7-unit increase in discomfort, while an increase of one unit of exposure time increased the discomfort level by 5.24 units.
Collapse
Affiliation(s)
- Sarang V Dhatrak
- Health Science Division, ICMR-National Institute of Occupational Health (NIOH), Ahmedabad, Gujarat, India
| | - Immad A Shah
- Health Science Division, ICMR-National Institute of Occupational Health (NIOH), Ahmedabad, Gujarat, India
| | - Shivkumar S Prajapati
- Chemical Science Division, ICMR-National Institute of Occupational Health (NIOH), Ahmedabad, Gujarat, India
| |
Collapse
|
3
|
Shah IA, Mishra S. Artificial intelligence in advancing occupational health and safety: an encapsulation of developments. J Occup Health 2024; 66:uiad017. [PMID: 38334203 PMCID: PMC10878366 DOI: 10.1093/joccuh/uiad017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 11/29/2023] [Accepted: 12/06/2023] [Indexed: 02/10/2024] Open
Abstract
OBJECTIVES In an era characterized by dynamic technological advancements, the well-being of the workforce remains a cornerstone of progress and sustainability. The evolving industrial landscape in the modern world has had a considerable influence on occupational health and safety (OHS). Ensuring the well-being of workers and creating safe working environments are not only ethical imperatives but also integral to maintaining operational efficiency and productivity. We aim to review the advancements that have taken place with a potential to reshape workplace safety with integration of artificial intelligence (AI)-driven new technologies to prevent occupational diseases and promote safety solutions. METHODS The published literature was identified using scientific databases of Embase, PubMed, and Google scholar including a lower time bound of 1974 to capture chronological advances in occupational disease detection and technological solutions employed in industrial set-ups. RESULTS AI-driven technologies are revolutionizing how organizations approach health and safety, offering predictive insights, real-time monitoring, and risk mitigation strategies that not only minimize accidents and hazards but also pave the way for a more proactive and responsive approach to safeguarding the workforce. CONCLUSION As industries embrace the transformative potential of AI, a new frontier of possibilities emerges for enhancing workplace safety. This synergy between OHS and AI marks a pivotal moment in the quest for safer, healthier, and more sustainable workplaces.
Collapse
Affiliation(s)
- Immad A Shah
- Division of Health Sciences, ICMR-National Institute of Occupational Health, Ahmedabad, Gujarat, India
| | - SukhDev Mishra
- Department of Biostatistics, Division of Health Sciences, ICMR-National Institute of Occupational Health, Ahmedabad, Gujarat, India
| |
Collapse
|
4
|
Seh MA, Amin T, Hussain SZ, Bashir O, Bashir S, Makroo HA, Jan S, Yousouf M, Manzoor S, Gani G, Kaur G, Dar BN, Fayaz U, Shah IA. Physicochemical, thermal, pasting, morphological, functional and bioactive binding characteristics of starches of different oat varieties of North-Western Himalayas. Int J Biol Macromol 2023; 253:126612. [PMID: 37652335 DOI: 10.1016/j.ijbiomac.2023.126612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 08/21/2023] [Accepted: 08/28/2023] [Indexed: 09/02/2023]
Abstract
Starches were isolated from five oat varieties (SFO-1, SFO-3, Sabzar, SKO-20 and SKO-96) grown in North-Western Himalayas of India. Moisture content of the varieties ranged from 9.25 ± 0.09 to 13.21 ± 0.11 %, indicating their shelf-stability. Results suggested >90 % purity of starches as was evident from values of ash, proteins, and lipids. Amylose content results showed that all starches fall within category of intermediate-amylose starches. Lambdamax, blue value and OD620/550 were found significantly (p ≤ 0.05) higher in SKO-20. Sabzar exhibited higher starch hydrolysis percentage of 85.16 % whereas, lowest was observed in SKO-20 (78.12 %). Degree of syneresis was higher in SKO-20 however, its freeze-thaw stability was lesser. Wide peak in FTIR spectra at 3320 cm-1 confirms nature of starches. SKO-20 exhibited significantly higher onset gelatinization temperature (65.19 ± 1.06 °C) and enthalpy (15.78 ± 0.15 J/g) whereas, Sabzar exhibited lowest enthalpy. Pasting characteristics indicated lowest and highest final viscosity in SKO-20 (341.30 ± 2.11 mPas) and SKO-96 (1470 ± 4.56 mPas), respectively. SEM results indicated irregular and polygonal shape of starches with size <10 μm. SKO-20 exhibited lowest disintegration time of 2.08 ± 0.01 min and Sabzar showed highest (3.31 ± 0.07 min). SKO-20 released more curcumin (71.28 %) whereas, Sabzar released less. This suggests that SKO-20 could be used as better excipient for delivery of curcumin at target site.
Collapse
Affiliation(s)
- Mohammad Amaan Seh
- Division of Food Science and Technology, Sher e Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar 190025, Jammu and Kashmir, India
| | - Tawheed Amin
- Division of Food Science and Technology, Sher e Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar 190025, Jammu and Kashmir, India.
| | - Syed Zameer Hussain
- Division of Food Science and Technology, Sher e Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar 190025, Jammu and Kashmir, India
| | - Omar Bashir
- Department of Food Technology and Nutrition, Lovely Professional University, Phagwara 144401, Punjab, India.
| | - Shubli Bashir
- Division of Food Science and Technology, Sher e Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar 190025, Jammu and Kashmir, India
| | - Hilal A Makroo
- Department of Food Technology, Islamic University of Science and Technology, Kashmir, Awantipora 192122, Jammu and Kashmir, India
| | - Samar Jan
- Division of Food Science and Technology, Sher e Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar 190025, Jammu and Kashmir, India
| | - Monisa Yousouf
- Division of Food Science and Technology, Sher e Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar 190025, Jammu and Kashmir, India
| | - Sobiya Manzoor
- Division of Food Science and Technology, Sher e Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar 190025, Jammu and Kashmir, India
| | - Gousia Gani
- Division of Food Science and Technology, Sher e Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar 190025, Jammu and Kashmir, India
| | - Gurkirat Kaur
- Electron Microscopy and Nano-Science Lab, Punjab Agricultural University, Ludhiana, India
| | - B N Dar
- Department of Food Technology, Islamic University of Science and Technology, Kashmir, Awantipora 192122, Jammu and Kashmir, India
| | - Ufaq Fayaz
- Division of Food Science and Technology, Sher e Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar 190025, Jammu and Kashmir, India
| | - Immad A Shah
- Indian Council of Medical Research-National Institute of Occupational Health, Ahmedabad 380016, Gujarat, India
| |
Collapse
|
5
|
Tank ND, Rupani MP, Shah RB, Shah IA, Dhatrak SV. Predictors of pulmonary dysfunction vis-à-vis the hypertension status of mine workers in Gujarat, western India: A cross-sectional study on the need to further investigate the role of anti-hypertensive drugs. Work 2023:WOR220678. [PMID: 38160382 DOI: 10.3233/wor-220678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024] Open
Abstract
BACKGROUND Mine workers face various health risks from occupational hazards, notably dust-related pulmonary dysfunction. This dysfunction is also attributed to diverse risk factors and health conditions. Despite the variety of underlying mechanisms, conflicting evidence persists regarding hypertension as a potential risk factor for such dysfunction. OBJECTIVE To determine the predictors of pulmonary dysfunction vis-à-vis the hypertension status of mine workers. METHODS We conducted a cross-sectional study among 444 mine workers from ten open-cast mines in Gujarat state (western part of India) from November 2020 to February 2022. We collected data on demographics, occupation, addiction, and comorbidities, including measurements like anthropometry, blood pressure, blood sugar, haemoglobin, and lipid levels. Hypertension was confirmed based on self-reported history and/or onsite blood pressure measurement, while pulmonary functions were assessed using a spirometer (expressed as forced expiratory volume in the first second FEV1 and forced vital capacity FVC). Multiple linear regression analysis was performed to determine the significant predictor of FEV1 or FVC vis-à-vis the hypertension status after adjusting for confounding variables. In addition, we assessed the effect of anti-hypertensive medications on pulmonary dysfunction. RESULTS A total of 41% (95% CI: 36-45%) of mine workers were suffering from hypertension. On multiple linear regression, only being a male and work experience duration were the significant predictors of FEV1 [0.900 (0.475-1.092), p=<0.001; -0.029 (-0.034 - -0.021, p=<0.001] and FVC [1.088 (0.771-1.404), p=<0.001; -0.031 (-0.038 - -0.024, p = 0.001] respectively. While unadjusted analysis indicated hypertension led to FEV1 and FVC reduction, this effect lost significance after adjusting for confounders. Nevertheless, subgroup analysis revealed those on antihypertensive medications had reductions in FEV1 and FVC by -0.263 (95% CI: -0.449 - -0.078, p = 0.006) L and -0.271 (95% CI: -0.476 - -0.067, p = 0.009) L respectively. CONCLUSION In our study among mine workers, alterations in lung function (FEV1 and FVC) on spirometry were predicted by gender and duration of work experience, while hypertension did not serve as a predictor. It is noteworthy that antihypertensive drugs were found to reduce lung functions on spirometry, highlighting the need for further research.
Collapse
Affiliation(s)
- Nitishkumar D Tank
- Poison Information Center, ICMR - National Institute of Occupational Health (NIOH), Ahmedabad, India
| | - Mihir P Rupani
- Clinical Epidemiology, Division of Health Sciences, ICMR - National Institute of Occupational Health (NIOH), Ahmedabad, India
| | - Rakshit B Shah
- Clinical Epidemiology, Division of Health Sciences, ICMR - National Institute of Occupational Health (NIOH), Ahmedabad, India
| | - Immad A Shah
- Clinical Epidemiology, Division of Health Sciences, ICMR - National Institute of Occupational Health (NIOH), Ahmedabad, India
| | - Sarang V Dhatrak
- Poison Information Center, ICMR - National Institute of Occupational Health (NIOH), Ahmedabad, India
| |
Collapse
|
6
|
Qaiser KN, Shah IA, Khan PA, Rather TA, Banday M, Dar MUD. Mapping and economic evaluation of traditional wicker willow in the plains of Kashmir Himalaya, India. CURR SCI INDIA 2022. [DOI: 10.18520/cs/v122/i12/1385-1391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
7
|
Masoodi TH, Shah IA, Dar MUD, Sofi PA, Mugloo JA. Evaluation of probability distribution functions applied to tree diameter in a mixed uneven Kiker (Robinia pseudoacacia) stand of Kashmir Himalaya, India. CURR SCI INDIA 2021. [DOI: 10.18520/cs/v121/i4/573-577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
8
|
Shah IA, Bhat GA, Mehta P, Lone MM, Dar NA. Genotypes of CYP1A1, SULT1A1 and SULT1A2 and risk of squamous cell carcinoma of esophagus: outcome of a case-control study from Kashmir, India. Dis Esophagus 2016; 29:937-943. [PMID: 26455829 DOI: 10.1111/dote.12427] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Studies on associations of various polymorphism in xenobiotic metabolizing genes with different cancers including esophageal squamous cell carcinoma (ESCC) are mixed and inconclusive. To evaluate the association of CYP1A1*4, SULT1A1*2 and SULT1A2*2 genotypes with ESCC risk and their modifying effects on different risk factors of ESCC, we conducted a case-control study in Kashmir, India, an area with relative high incidence of ESCC. We recruited 404 histopathologically confirmed ESCC cases, and equal number of controls, individually matched for sex, age and district of residence to respective case. Information was obtained on various dietary, lifestyle and environmental factors in face-to-face interviews, using a structured questionnaire, from each subject. Genotypes were analyzed by polymerase chain reaction, restriction fragment length polymorphism and direct sequencing. Conditional logistic regression models were used to calculate odds ratios (ORs) and 95% confidence intervals (95% CIs). A higher risk was observed in the subjects who harbored variant genotype of CYP1A1*4 (OR = 2.06; 95% CI: 1.28-3.32); and the risk was further enhanced in ever smokers (OR = 3.47; 95% CI: 1.62-7.42), adobe dwellers (OR = 6.71; 95% CI: 3.02-14.89), and biomass fuel users (OR = 5.11; 95% CI: 1.34-19.50). We did not find any significant differences in the polymorphic variants of SULT1A1*2 and SULT1A2*2 between cases and controls. The study indicates that, unlike SULT1A1*2 and SULT1A2*2, the polymorphism of CYP1A1*4 is associated with ESCC risk. However, replicative studies with larger sample size are needed to substantiate our findings.
Collapse
Affiliation(s)
- I A Shah
- Department of Biochemistry, University of Kashmir, Srinagar, JK.,Department of Human Genetics, Punjabi University Patiala, Patiala, Punjab, India
| | - G A Bhat
- Department of Biochemistry, University of Kashmir, Srinagar, JK
| | - P Mehta
- Department of Human Genetics, Punjabi University Patiala, Patiala, Punjab, India
| | - M M Lone
- Departments of Radiation Oncology, SK Institute of Medical Sciences, Srinagar, JK, India
| | - N A Dar
- Department of Biochemistry, University of Kashmir, Srinagar, JK
| |
Collapse
|
9
|
Bhat GA, Shah IA, Rafiq R, Nabi S, Iqbal B, Lone MM, Islami F, Boffetta P, Dar NA. Family history of cancer and the risk of squamous cell carcinoma of oesophagus: a case-control study in Kashmir, India. Br J Cancer 2015; 113:524-32. [PMID: 26125444 PMCID: PMC4522628 DOI: 10.1038/bjc.2015.218] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 05/11/2015] [Accepted: 05/21/2015] [Indexed: 02/06/2023] Open
Abstract
Background: Only a few studies have examined the association between family history of cancer (FHC) and the risk of oesophageal squamous cell carcinoma (ESCC) in high incidence areas of ESCC. We conducted a case–control study to evaluate the relationship between FHC and ESCC risk in Kashmir, India, with analysis of detailed epidemiological data and information on multiple gene polymorphisms. Methods: We collected detailed information on FHC and a number of socio-demographic and lifestyle factors, and also obtained blood samples for genetic analysis from 703 histopathologically confirmed ESCC cases and 1664 individually matched controls. Conditional logistic regression models were used to calculate odds ratios (ORs) and 95% confidence intervals (95% CIs). Results: Participants who had FHC showed a strong association with ESCC risk, and the risk was stronger when first-degree relatives (FDRs) had FHC (OR=6.8; 95% CI=4.6–9.9). Having a sibling with a cancer showed the strongest association (OR=10.8; 95% CI=6.0–19.3), but having a child with a cancer was not associated with ESCC risk. A history of any cancer in the spouse was also associated with ESCC risk (OR=4.1; 95% CI=1.6–10.2). Those with two or more relatives with FHC were at a higher risk of ESCC. After restricting FHC to familial ESCC only, the above associations were strengthened, except when spouses were affected with ESCC (OR=2.5; 95% CI=0.7–8.9). When we examined the associations between several single-nucleotide polymorphisms and ESCC in those with and without FHC, the associations of variant genotypes in cytochrome P450 (CYP) 2C19 and CYP2D6 and the wild genotype of CYP2E1 with ESCC were much stronger in those with FHC. The FHC had an additive interaction with several risk factors of ESCC in this population. Conclusion: Our results showed that FHC was strongly associated with ESCC risk in Kashmir. It seems both genetic factors and shared environment are involved in this association.
Collapse
Affiliation(s)
- G A Bhat
- Department of Biochemistry, University of Kashmir, Srinagar 190006, India
| | - I A Shah
- Department of Biochemistry, University of Kashmir, Srinagar 190006, India
| | - R Rafiq
- Department of Biochemistry, University of Kashmir, Srinagar 190006, India
| | - S Nabi
- Department of Biochemistry, University of Kashmir, Srinagar 190006, India
| | - B Iqbal
- Department of Biochemistry, University of Kashmir, Srinagar 190006, India
| | - M M Lone
- Departments of Radiation Oncology, SK Institute of Medical Sciences, Soura Srinagar, 190011 India
| | - F Islami
- 1] Surveillance and Health Services Research, American Cancer Society, Atlanta, GA, USA [2] Digestive Oncology Research Center, Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, 14117 Iran
| | - P Boffetta
- Tisch Cancer Institute and Institute for Transitional Epidemiology, Mount Sinai School of Medicine, New York, NY, USA
| | - N A Dar
- Department of Biochemistry, University of Kashmir, Srinagar 190006, India
| |
Collapse
|
10
|
Noor M, Shahwar D, Rahman H, Ullah H, Ali F, Iqbal M, Shah IA, Ullah I. Change in heritability estimates due to half-sib family selection in the maize variety Pahari. Genet Mol Res 2013; 12:1872-81. [PMID: 23359057 DOI: 10.4238/2013.january.16.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
This research was carried out at the Agriculture Research Farm, Khyber Pakhtunkhwa Agricultural University, Peshawar, and the Cereal Crops Research Institute, Pirsabak, Nowshera, during 2009 and 2010. Half-sib families (HS) derived from the maize variety Pahari in spring crop seasons 2009 and 2010 were developed at the Cereal Crops Research Institute. All HS families were detasseled well before pollen shedding. At maturity, each family was harvested and shelled separately. During the summer crop of seasons 2009 and 2010, these HS families were evaluated in 12 x 12 and 11 x 11 partially balanced lattice square arrangements at the Khyber Pakhtunkhwa Agricultural University, Peshawar, for various flowering and yield traits, respectively. The data on days to mid-silking, anthesis, anthesis-silking interval, 100-grain weight, and grain yield were recorded. The results revealed significant differences among families for all traits in both cycles. High heritability (0.88) was observed for days to mid-silking in cycle 0 (C₀), while moderate heritability (0.42) was recorded for 100-grain weight in C₁. The selection differential was quite reasonable and varied according to the traits of interest. The observed response for grain yield in C₀ (815.74 kg/ha) was greater than the expected response (681.76 kg/ha).
Collapse
Affiliation(s)
- M Noor
- Department of Plant Breeding and Genetics, University Agricultural, Peshawar, Pakistan.
| | | | | | | | | | | | | | | |
Collapse
|
11
|
Dar NA, Bhat GA, Shah IA, Iqbal B, Makhdoomi MA, Kakhdoomi MA, Nisar I, Rafiq R, Iqbal ST, Bhat AB, Nabi S, Shah SA, Shafi R, Masood A, Lone MM, Zargar SA, Najar MS, Islami F, Boffetta P. Hookah smoking, nass chewing, and oesophageal squamous cell carcinoma in Kashmir, India. Br J Cancer 2012; 107:1618-23. [PMID: 23033008 PMCID: PMC3493783 DOI: 10.1038/bjc.2012.449] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Although cigarette smoking is an established risk factor for oesophageal squamous cell carcinoma (ESCC), there is little information about the association between other smoking and smokeless tobacco products, including hookah and nass, and ESCC risk. We conducted a case-control study in Kashmir Valley, India, where hookah smoking, nass chewing, and ESCC are common, to investigate the association of hookah smoking, nass use, and several other habits with ESCC. METHODS We recruited 702 histologically confirmed ESCC cases and 1663 hospital-based controls, individually matched to the cases for age, sex, and district of residence from September 2008 to January 2012. Conditional logistic regression models were used to calculate odds ratios (ORs) and 95% confidence intervals (95% CIs). RESULTS Ever-hookah smoking (OR=1.85; 95% CI, 1.41-2.44) and nass chewing (OR=2.88; 95% CI, 2.06-4.04) were associated with ESCC risk. These associations were consistent across different measures of use, including intensity, duration, and cumulative amount of use, and after excluding ever users of the other product and cigarette smokers. Our results also suggest an increased risk of ESCC associated with ever-gutka chewing and -bidi smoking. However, the latter associations were based on small number of participants. CONCLUSION This study shows that hookah and nass use are associated with ESCC risk. As prevalence of hookah use seems to be increasing among young people worldwide, these results may have relevance not only for the regions in which hookah use has been a traditional habit, but also for other regions, including western countries.
Collapse
Affiliation(s)
- N A Dar
- Department of Biochemistry, University of Kashmir, Hazratbal, Srinagar 190006, India.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Abstract
BACKGROUND Amyloidosis is one of the unusual diseases about which a physician may not think when it is affecting the patient. During the last three decades, there has been an enormous progress in the understanding of the chemical nature, classification, pathogenesis, clinical features, diagnostic measures and therapy of this disorder. AIM To provide an updated review of amyloidosis affecting the gastrointestinal tract. METHODS Review of current medical literature. RESULTS Amyloid proteins (irrespective of the type) can deposit in various parts of the gastrointestinal tract and liver resulting in symptoms of abdominal pain, dysmotility, diarrhoea, gastrointestinal bleeding, hepatomegaly and even portal hypertension with its associated complications. Definitive diagnosis can only be made by histological examination of the affected organ. Disease modifying treatment with high-dose chemotherapy followed by autologous stem-cell transplantation has shown promise. Liver transplantation is an option for a select group of patients. CONCLUSIONS Suspicion of gastrointestinal amyloidosis in patients without known history of amyloidosis is difficult, but should be considered in those older than 30 years with unexplained diarrhoea, weight loss, autonomic dysfunction, malabsorption or proteinuria. While most gastrointestinal complications are managed symptomatically, causal therapy is reserved for a select few from various subtypes of this disorder.
Collapse
Affiliation(s)
- S Petre
- Department of Gastroenterology, Carl T. Hayden VA Medical Center, Phoenix, AZ 85012, USA
| | | | | |
Collapse
|
13
|
|
14
|
Shah IA, Salvatore JR, Somsin A, Gani OS. Concurrent primary large cell lymphoma and carcinoid tumor of the small bowel. Am J Clin Pathol 2000; 113:600. [PMID: 10761469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
|
15
|
Abstract
BACKGROUND Thermoablation is being used to eliminate the metaplastic epithelium of Barrett's esophagus and allow its reversal into squamous epithelium in an acid-controlled environment. This study assessed the efficacy and safety of a new thermoablation technique, argon plasma coagulation. METHODS Patients with circumferential Barrett's esophagus 2 to 5 cm long were enrolled. Acid suppression was accomplished with lansoprazole. One-half the circumference of Barrett's mucosa was treated with argon plasma coagulation, and the other half served as an internal control. After macroscopic squamous re-epithelialization occurred, biopsy specimens were obtained from both areas systematically. RESULTS Nine patients, all men with a mean age of 51.1 years, completed the study. During 24-hour esophageal pH monitoring a pH less than 4 occurred on average 2.8% of the time with a mean dose of lansoprazole of 70 mg/day. Squamous re-epithelialization developed in treated areas in all 9 patients. Biopsy showed that 7 of 9 patients (77.8%) had squamous re-epithelialization without intestinal metaplasia. Biopsy showed that 2 of 9 patients (22.2%) had squamous re-epithelialization with evidence of underlying intestinal metaplasia. There were no serious complications. CONCLUSIONS Argon plasma coagulation in an acid-controlled environment was both efficacious and safe in the treatment of Barrett's esophagus. However, the reappearance of squamous epithelium after therapy did not exclude the presence of underlying intestinal metaplasia.
Collapse
Affiliation(s)
- A J Grade
- Department of Medicine, Gastroenterology Section, Carl T. Hayden VA Medical Center, Phoenix, Arizona 85012, USA
| | | | | | | |
Collapse
|
16
|
Shah IA, Salvatore JR, Kummet T, Gani OS, Wheeler LA. Pseudomesotheliomatous carcinoma involving pleura and peritoneum: A clinicopathologic and immunohistochemical study of three cases. Ann Diagn Pathol 1999; 3:148-59. [PMID: 10359850 DOI: 10.1016/s1092-9134(99)80042-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Pseudomesotheliomatous carcinoma is a rare variant of peripheral adenocarcinoma of the lung that can manifest clinical, radiologic, and pathologic features similar to malignant mesothelioma. We present three patients with pseudomesotheliomatous carcinoma of the lung. In one patient the carcinoma extended beyond the thorax and extensively involved the peritoneum, mesentery, omentum, and intestines. All patients experienced weight loss and chest pain. All were white men aged 63, 65, and 67 years. Two were smokers and had shortness of breath, cough, and pleural effusion. One had a history of asbestos exposure. No patient developed dyspnea or hemoptysis. One was successfully treated for prostatic carcinoma 18 months earlier. Radiographically, all tumors were pleura-based. Grossly, the tumors spread extensively over pleural (and in one case peritoneal) surfaces and mimicked malignant mesothelioma. Histologically, all tumors were poorly differentiated and necrotic; two tumors exhibited spindle-cell components and desmoplasia. Mucin production was detectable in none, 10%, and 50% of tumor cells. The percentages of tumor cells immunoreactive for Ber-EP4 were 70%, 100%, and 80%; for Leu MI 0%, 90%, and 50%; for epithelial membrane antigen 80%, 80%, and 100%; for B 72.3%, 0%, 90%, and 20%; for polyclonal carcinoembryonic antigen 0%, 10%, and 10%; and for monoclonal 5%, 0%, and 0%. Of these, Ber-EP4 and B 72.3 rendered the most reliable diagnostic results. The clinical, radiologic, and gross and routine histologic findings were similar to those of a malignant mesothelioma; the final diagnosis could be made based mainly on immunocytochemical results. We have reviewed the English and German literature regarding 65 such tumors and present our experience with three additional cases. We emphasize the application of immunocytochemical studies on pleura-based poorly or undifferentiated malignant tumors of unknown origin.
Collapse
Affiliation(s)
- I A Shah
- Division of Hematology Oncology, Veterans Affairs Medical Center, Phoenix, AZ 85012, USA
| | | | | | | | | |
Collapse
|
17
|
Abstract
Mucormycosis is an uncommon fungal disease and one of the most fulminant infections known. This is the second report of rhinocerebral mucormycosis caused by Apophysomyces elegans, a newly recognized genus and species classified in the family Mucoraceae. The patient was a 54-year-old man being treated for a severe sinus infection with antibiotics and oral steroids. Recovery occurred in our patient after prompt surgical debridement and drainage of his maxillary sinuses. This case fits the reported characteristics of other A. elegans infections including warm climate, intimate contact with the soil, and an incubation period measured in days. Several reported cases indicate A. elegans can cause mucormycosis in immunocompetent individuals with no underlying medical problems.
Collapse
Affiliation(s)
- S R Brown
- Otolaryngology Section, Carl T. Hayden VA Medical Center, Phoenix, Arizona 85012, USA
| | | | | |
Collapse
|
18
|
|
19
|
Bekele G, Felicetta JV, Gani O, Shah IA. Malignant Thymic Carcinoid in Multiple Endocrine Neoplasia Type I Syndrome: Case Report and Literature Review. Endocr Pract 1998; 4:153-8. [PMID: 15251745 DOI: 10.4158/ep.4.3.153] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVE To describe a case of thymic carcinoid tumor in association with multiple endocrine neoplasia type I (MEN I) and discuss the various manifestations of this syndrome. METHODS We present the clinical and laboratory data, including histopathologic and immunocytochemical findings, for our current patient and also review the literature on MEN I syndromes. RESULTS In a 46-year-old Caucasian man with no family history of multiple endocrine neoplasia, numerous MEN I lesions developed over time. The patient had gastrinoma of the duodenum, Zollinger-Ellison syndrome, hyperparathyroidism, a nonfunctioning adrenal mass, and foregut carcinoid tumors, including gastric and malignant thymic carcinoids. He sequentially underwent partial gastrectomy in conjunction with Billroth II anastomosis, a four-gland parathyroidectomy, and palliative radiotherapy for malignant carcinoid tumor, as well as endoscopic excision of accessible tumors. CONCLUSION The involvement in MEN I can be clinically complex. Early detection of MEN I lesions will facilitate timely implementation of treatment and help minimize complications.
Collapse
Affiliation(s)
- G Bekele
- Carl T. Hayden Veterans Affairs Medical Center, Phoenix, Arizona 85012, USA
| | | | | | | |
Collapse
|
20
|
Abstract
A saline suspension of mitomycin C adsorbed on activated charcoal and administered intraperitoneally has been reported to be safe and effective in the treatment of gastric carcinoma. Activated charcoal specifically targets tumour and lymph-node tissues and the sustained higher local drug concentration is thought to be beneficial. The charcoal particles used in these suspensions have varied in size from > 147 microm to < 20 nm in diameter, but no data have been published to show how this might affect drug adsorption and delivery. Any variability in drug adsorption could pose a serious clinical risk for drugs with a narrow therapeutic index. We have, therefore, investigated the adsorption of mitomycin C on activated charcoal in-vitro. Activated charcoal was ground and sieved to yield four size-fractions between 180 and 53 microm. Adsorption isotherms (n > or = 3) were constructed and applied to the Freundlich model with 0-l00 microg mL(-1) mitomycin C measured by HPLC with detection at 365 nm. Adsorption of mitomycin C by activated charcoal varied by a factor of three under identical conditions at room temperature (21 degrees C) and at 37 degrees C. The specific adsorption (microg mitomycin C (mg activated charcoal)(-1)) was generally higher at 37 degrees C than at room temperature. The variability of mitomycin C adsorption was greatly reduced by addition of the surface-active agent polyvinylpyrollidone, used to determine that adsorption of mitomycin C was independent of activated charcoal particle size. The characteristics of adsorption of mitomycin C by activated charcoal are complex and should be thoroughly investigated to discover the critical controlling factors before submitting the suspensions for further clinical evaluation.
Collapse
Affiliation(s)
- I A Shah
- Department of Pharmacology and Therapeutics, University of Liverpool, UK
| | | | | |
Collapse
|
21
|
Abstract
BACKGROUND Papillary serous carcinoma of the peritoneum (PSCP) is a rare primary peritoneal tumor, described exclusively in women. It is believed to arise from the secondary müllerian system, which is comprised of the pelvic and lower abdominal mesothelial lining and subjacent (subcoelomic) mesenchyme in women. Both mesotheliomas and PSCP arise from the coelomic epithelium, but are clinicopathologically and biologically distinct entities. METHODS The authors report clinicopathologic findings in a man, age 74 years, who died 3 months after the diagnosis of an extensive malignant abdominal disease. RESULTS The routine histologic and immunocytochemical studies of tumor tissue, obtained during the patient's lifetime and at autopsy, validated the unique occurrence of PSCP in a man. CONCLUSIONS This case illustrates that PSCP can occur in a man and that this diagnosis may be considered in the differential diagnosis of papillary serous tumors of the peritoneum in male patients. Although rare, PSCP is a diagnostically distinct entity the treatment of which is similar to ovarian serous tumors rather than mesotheliomas.
Collapse
Affiliation(s)
- I A Shah
- Department of Pathology and Laboratory Medicine, Veterans Affairs Medical Center, Phoenix, Arizona 85012, USA
| | | | | | | | | |
Collapse
|
22
|
Abstract
The monoclonal antibody CD 68 (KP 1) reacts with fibrohistiocytic and some epithelial neoplasms; its reactivity compared with that of HMB 45 in malignant melanoma (MM) and neural tumors needs further elucidation. Using a streptavidin-biotin-immunoperoxidase procedure, we examined the reactivity of 65 MM (46 conventional, 1 polypoid, 6 desmoplastic [DMM], and 12 metastatic), 21 neurofibromas, 1 neurofibrosarcoma, 10 schwannomas, 1 perineurioma, 2 neurothekeomas, and 14 blue and 26 other nevi for CD-68, HMB-45-defined antigen, S 100 and neurofilament protein. A positive staining for CD 68 was observed in 38 of 42 primary, 5 of 6 DMM, and 11 of 12 metastatic melanomas; 6 of 10 schwannomas; 5 of 10 nevi with junctional component and all 14 blue nevi. All 21 neurofibromas, 1 each neurofibrosarcoma and perineurioma, both neurothekeomas, and all 12 nevi with dermal component were CD 68-negative. HBM 45 was expressed by all 44 primary, none of 6 DMM, and 7 of 12 metastatic melanomas; by none of 10 schwannomas, 6 neurofibromas, 1 neurofibrosarcoma, 1 perineurioma and 2 neurothekeomas. Both junctional nevi, 8 of 10 nevi with junctional components, 1 of 10 dermal components of junctional nevi, and 11 of 13 blue nevi were also HMB 45 positive. Except for 1 perineurioma, S 100 decorated all tumors examined. NF was immunoreactive in 1 of 45 conventional melanomas, 2 of 21 neurofibromas, 2 of 10 schwannomas, and 3 of 10 blue nevi; it was non-reactive in all polypoid, desmoplastic and metastatic melanomas; neurofibrosarcoma, perineurioma, neurothekeoma and other nevi. We conclude that the CD-68-reactivity in primary melanomas, neurofibromas, neurofibrosarcomas, perineuriomas, and nevi was similar to that of HMB 45. The significantly higher CD 68-positivity than of HMB 45 in metastatic and desmoplastic melanomas and schwannomas may be of diagnostic value.
Collapse
Affiliation(s)
- I A Shah
- Department of Pathology and Laboratory Medicine, Veterans Affairs Medical Center, Phoenix, Arizona, USA
| | | | | |
Collapse
|
23
|
|
24
|
Haq NU, Shah IA. Chorea--a presenting feature of giant cell arteritis. J PAK MED ASSOC 1996; 46:263-4. [PMID: 9000823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- N u Haq
- Department of Medicine, Khyber Medical College, Peshawar
| | | |
Collapse
|
25
|
Shah IA, Lewin KJ, Iqbal J, Mukherjee R. Veno-occlusive disease of the small bowel. An entity in search of identity. Arch Pathol Lab Med 1996; 120:872-5. [PMID: 9140294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Veno-occlusive disease of the bowel is a rare entity, and, to our knowledge, only two studies have been reported in the literature; these reports describe 11 patients with veno-occlusive disease of the small and large bowels. We describe a patient who developed veno-occlusive disease of the small bowel, whose histologic findings were somewhat different from those previously reported.
Collapse
Affiliation(s)
- I A Shah
- Pathology and Laboratory Medicine Service, Veterans Affairs Medical Center, Phoenix, Ariz 85016, USA
| | | | | | | |
Collapse
|
26
|
Shah IA, Dolan WV, Sturm KM. Incidence and treatment of periampullary duodenal cancer in the U.S. veteran patient population. Cancer 1996; 78:568. [PMID: 8697407 DOI: 10.1002/(sici)1097-0142(19960801)78:3<568::aid-cncr29>3.0.co;2-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
|
27
|
Shah IA, Hayden CT, Alfsen GC. Association of hepatocellular carcinoma in North American patients with extrahepatic primary malignancies. Cancer 1995; 75:2784. [PMID: 7743489 DOI: 10.1002/1097-0142(19950601)75:11<2784::aid-cncr2820751127>3.0.co;2-d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
|
28
|
Rafi S, Shah IA, Rao MH, Billoo AG. Expanded programme of immunization in Karachi. J PAK MED ASSOC 1995; 45:34-7. [PMID: 7602739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Immunization status of children and their mothers and reasons for their failure to be immunized were studied. The study lasted for two months, i.e., August and September, 1993 at the Paediatric Outpatient Department of Civil Hospital, Karachi. Three groups of patients were targeted. Six hundred and twenty-four children under 1 year of age, 955 children between the ages of 1 to 5 years and 1579 mothers were registered. These women were questioned regarding their immunization status and that of their children. In the group below 1 year of age, BCG, DPT and polio (3 doses) and measles were given to 75%, 35% and 23% respectively. Tetanus toxoid (2 doses) was given to 47% of their mothers. In the group of children between 1-5 years, BCG, DPT and polio 3 doses and measles were given to 84%, 63% and 58% respectively. Tetanus toxoid (2 doses) were given to 64% of their mothers. The main reasons for not vaccinating were lack of information and lack of motivation.
Collapse
Affiliation(s)
- S Rafi
- Department of Paediatrics, Dow Medical College, Karachi
| | | | | | | |
Collapse
|
29
|
Abstract
This paper presents a model of interlaced video. The model uses the assumption that the whole scene, which is captured by a camera, is moving at a constant speed. Within this model, the Fourier transform of the interlaced video signal is analyzed for various modes used in picture coding, such as intrafield, intraframe, interfield (with motion compensation), and interframe (with and without motion compensation) processing. The main spectral components of the signal are identified. The analysis yields new insight into the nature of the components. This insight is useful in the design of video processing systems, which is illustrated by various applications.
Collapse
|
30
|
Abstract
Following the observation of increased trough whole blood cyclosporin A (CyA) concentrations and reduced renal function in a patient with recalcitrant generalized pustular psoriasis treated with a combination of CyA and etretinate, the effect of vitamin A analogues on human microsomal cytochrome P450-dependent CyA metabolism was investigated in vitro. In addition, the effect of terbinafine, a new allylamine antifungal agent, was also tested. Etretinate, its major metabolite acitretin, and isotretinoin, each at a single concentration of 100 microM, inhibited total hepatic microsomal CyA metabolism to a similar extent (33-45%, compared with control values). The generation of total primary and total secondary CyA metabolites was also inhibited to a similar extent by each of the retinoids. Conversely, terbinafine was without significant effect on CyA metabolism in vitro. The results, which suggest that inhibition of hepatic CyA metabolism by retinoids may contribute to increased circulating CyA concentrations, are discussed in relation to other potential drug interactions, and to the use of etretinate in reducing the CyA administered dose.
Collapse
Affiliation(s)
- I A Shah
- Department of Clinical Biochemistry, University of Aberdeen, U.K
| | | | | | | | | |
Collapse
|
31
|
Haddad FS, Shah IA, Manné RK, Costantino JM, Somsin AA. Renal cell carcinoma insulated in the renal capsule with calcification and ossification. Urol Int 1993; 51:97-101. [PMID: 8351763 DOI: 10.1159/000282522] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
We describe a case of renal-cell carcinoma insulated and entrapped in the renal capsule by a calcified and ossified rim. To our knowledge, this is the first time a renal-cell carcinoma of the renal capsule is reported. The fact that the tumor cells originated from the distal/medullary tubules was supported by immunohistochemical studies. The pertinent literature is reviewed.
Collapse
Affiliation(s)
- F S Haddad
- Section of Urology, Carl T. Hayden V.A. Medical Center, Phoenix, Ariz
| | | | | | | | | |
Collapse
|
32
|
Shah IA, Netto D, Schlageter MO, Muth C, Fox I, Manne RK. Neurofilament immunoreactivity in Merkel-cell tumors: a differentiating feature from small-cell carcinoma. Mod Pathol 1993; 6:3-9. [PMID: 7678934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
To differentiate Merkel-cell tumor (MCT) from other neuroendocrine (NE) carcinomas, we immunostained (using avidin-biotin-peroxidase method) nine MCT and 37 NE (including 28 small-cell) carcinomas for NE markers (neuron-specific enolase and chromogranin), cytokeratin, neurofilament, vimentin, and a number of other markers. Cytokeratin was positive in 100% of MCT and in 85% of small-cell carcinomas; neurofilament and vimentin were positive in respectively 100% and 22% of MCT and 0% of NE carcinomas. Our data suggest that the coexpression of cytokeratin and neurofilament by an undifferentiated dermal or visceral tumor is of significant help in diagnosing MCT and differentiating it from small-cell carcinomas. The vimentin reactivity is a weak and insignificant discriminant.
Collapse
Affiliation(s)
- I A Shah
- Department of Laboratory Service, Veterans Affairs Medical Centers, Phoenix, Arizona
| | | | | | | | | | | |
Collapse
|
33
|
Waninger J, Kauffmann GW, Shah IA, Farthmann EH. Influence of the distance between interrupted sutures and the tension of sutures on the healing of experimental colonic anastomoses. Am J Surg 1992; 163:319-23. [PMID: 1539766 DOI: 10.1016/0002-9610(92)90013-h] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Certain technical factors determine the success of the creation of intestinal anastomoses. The influence of the distance between interrupted sutures and the suture tension on wound healing was investigated in an experimental study using a specially designed suture model. The combination of a long suture distance (group A, 2.5 mm) and a short suture distance (group B, 1.5 mm) with three different suture tensions, i.e., (1) no tension; (2) moderate tension; and (3) high tension, resulted in six different techniques. Tension was created by means of a spring balance. The anastomoses were examined macroscopically, histologically by microangiography, and by bursting pressure. Apposition of the bowel wall between the interrupted sutures was inappropriate due to prolapse of the mucosa in 7.9% of the patients in group A but did not occur in groups B2 and B3. The leakage rate was 4.6% in group A and 1.3% in group B. Early healing of the mucosa was noted in group B2. Bursting pressure was significantly higher on day 2 and 4 in groups B2 and B3. The results demonstrate the influence of suture technique on the wound healing of intestinal anastomoses. The best healing pattern was achieved by a small distance between the sutures and a moderate suture tension.
Collapse
Affiliation(s)
- J Waninger
- Chirurgische Universitätsklinik Freiburg, Germany
| | | | | | | |
Collapse
|
34
|
|
35
|
Shah IA, Kurtz SM, Simonsen RL. Radiation-induced malignant fibrous histiocytoma of the pulmonary artery. Arch Pathol Lab Med 1991; 115:921-5. [PMID: 1656911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We describe a malignant fibrous histiocytoma (MFH) of the pulmonary artery. The patient received, 25 years ago, at the age of 43 years, radiation therapy to the chest for squamous-cell carcinoma of the lung. We believe the patient's second tumor was induced by radiation and, to our knowledge, this case represents the first report of radiation-induced MFH of the pulmonary artery. The diagnosis was confirmed by findings from electron microscopy and extensive studies with immunohistochemical stains. We discuss the value of studies with immunohistochemical stains in the diagnosis and differential diagnosis of MFH. The presentation of this case underlines that MFH can occur in the pulmonary artery and may be--as is the MFH in other locations--induced by radiation.
Collapse
Affiliation(s)
- I A Shah
- Department of Laboratory Service, Veterans Affairs Medical Center, Phoenix, AZ 85012
| | | | | |
Collapse
|
36
|
Abstract
We report on the rare association of Hodgkin's disease with systemic lupus erythematosus. Two years after the diagnosis of systemic lupus erythematosus, the patient developed upper abdominal pain, jaundice, splenomegaly, and fever of unknown origin. He had a rapidly fatal clinical course, despite being treated for systemic lupus erythematosus, cholecystitis, and possible sepsis. Autopsy revealed Hodgkin's disease, lymphocyte-depletion type, involving lymph nodes, liver, spleen, and bone marrow. The awareness of the association of Hodgkin's disease with systemic lupus erythematosus and its modes of presentation will help in the early diagnosis and management of such patients.
Collapse
Affiliation(s)
- D Netto
- Laboratory Service, Veterans Affairs Medical Center, Dallas, TX 85012
| | | |
Collapse
|
37
|
Shah IA, Schlageter MO, Netto D. Immunoreactivity of neurofilament proteins in neuroendocrine neoplasms. Mod Pathol 1991; 4:215-9. [PMID: 1646456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We immunostained histologic sections of formalin-paraffin-processed specimens from 112 neuroendocrine tumors to evaluate the expression of intermediate filaments, especially neurofilament (NF) protein. The commercially available anti-human NF protein monoclonal antibody was raised against the Mr 200,000 and 70,000 components of neurofilaments. None of our tumors exhibited unequivocal immunoreactivity for Mr 200,000 or 70,000 neurofilament proteins. The failure of a tumor to express the Mr 200,000 or 70,000 component of NF protein does not question its neuroendocrine nature. However, the unequivocal positivity for Mr 200,000 or 70,000 components of NF in an undifferentiated tumor with a differential diagnosis between neuroendocrine small-cell carcinoma and a neurogenic tumor should support the latter consideration.
Collapse
Affiliation(s)
- I A Shah
- Department of Laboratory Service, Veterans Affairs Medical Centers, Phoenix, Arizona
| | | | | |
Collapse
|
38
|
Shah IA, Schlageter MO, Stinnett P, Lechago J. Cytokeratin immunohistochemistry as a diagnostic tool for distinguishing malignant from benign epithelial lesions of the prostate. Mod Pathol 1991; 4:220-4. [PMID: 1710806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The basal cell layer (BCL) is believed to be absent in malignant but present in nonmalignant epithelial lesions of the prostate. Using the avidin-biotin-peroxidase complex (ABC) immunoperoxidase method, we examined the value of the monoclonal antibody cocktail MA-903, which stains selectively the prostatic BCL layer, in the distinction between benign and malignant epithelial lesions of the prostate. We immunostained histologic sections of 63 prostates, containing 235 morphologic appearances: normal prostate glands, 43; benign prostate hyperplasia (BPH), 59; basal cell hyperplasia (BCH), 24; adenosis, seven; prostatic intraductal neoplasia (PIN 1), 21; PIN 2, 25; PIN 3, 16; and cancer, 40. Some degree (continuous, continuous with focal disruption, and disrupted patterns) of basal cell staining was demonstrable in all normal and BPH, BCH, and PIN 1 lesions, but was absent in 39 of 40 cancers. However, not every gland in benign lesions stained positively. Further, two of 25 PIN 2 and six of 16 PIN 3 lesions failed to reveal BCL. Our results suggest that the presence or absence of BCL, predicated on cytokeratin MA-903 immunoreactivity, may be a useful indicator in the distinction between benign and malignant epithelial lesions of the prostate.
Collapse
Affiliation(s)
- I A Shah
- Department of Pathology, University of Texas Southwestern Medical School, Dallas
| | | | | | | |
Collapse
|
39
|
Omar G, Shah IA, Thomson AW, Whiting PH, Burke MD. FK 506 inhibition of cyclosporine metabolism by human liver microsomes. Transplant Proc 1991; 23:934-5. [PMID: 1703356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- G Omar
- Division of Pharmacology, University of Aberdeen, UK
| | | | | | | | | |
Collapse
|
40
|
Abstract
Vagotomy is known to reduce acid secretion and to increase serum gastrin concentrations. However, there is minimal information on the effect of vagotomy on parietal cell mass or gastrin cell mass. Basal and maximal acid secretions and fasting serum gastrin concentrations were measured in 22 gastric fistula dogs with pyloromyotomy before and up to 56 days following complete bilateral truncal vagotomy (n = 11) or sham vagotomy (n = 11). Dogs underwent total gastrectomy on postoperative days 9 (n = 5 per group) or day 56 (n = 6 per group). Parietal cells were stained with Luxol fast blue and parietal cell mass determined with computer-assisted histomorphometry. Parietal cell mass averaged 10.68 +/- 0.90 billion in control dogs and correlated significantly with maximal acid output (r = 0.76; P less than 0.01). Vagotomy reduced maximal acid output by 40%-50% (P less than 0.001) but had no significant effect on parietal cell mass (8.99 +/- 1.00 billion). Vagotomy increased serum gastrin concentrations significantly, but antral gastrin cell mass in vagotomized dogs (5.66 +/- 1.00 million) was not significantly different than that in control dogs (4.74 +/- 0.50 million). Thus, vagotomy did not lead to parietal cell hypoplasia or gastrin cell hyperplasia despite profound alterations in parietal cell and gastrin cell function.
Collapse
Affiliation(s)
- L Inman
- Department of Internal Medicine, Veterans Administration Medical Center, Dallas, Texas
| | | | | | | | | |
Collapse
|
41
|
|
42
|
|
43
|
Wani NA, Shah IA, Koul V. Leiomyoblastoma stomach. Indian J Gastroenterol 1989; 8:115-6. [PMID: 2707841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Three patients with epithelioid leiomyomatous tumors (leiomyoblastomas) of the stomach are presented.
Collapse
|
44
|
Affiliation(s)
- I A Shah
- Dept. of Pathology, Veterans Administration Medical Center, Dallas, Texas
| |
Collapse
|
45
|
Wani NA, Shah IA. Leiomyoblastoma of stomach. J Indian Med Assoc 1988; 86:198. [PMID: 3230314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
46
|
Brambs HJ, Leser HG, Salm R, Shah IA, Gerok W, Farthmann E, Wenz W. [Percutaneous transhepatic cholangioscopy. A new method for the diagnosis of bile duct malignancies]. Dtsch Med Wochenschr 1987; 112:1943-6. [PMID: 3691327 DOI: 10.1055/s-2008-1068359] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Percutaneous transhepatic cholangioscopy combines the advantages of endoscopic and radiological examinations. It makes it possible to assess the intraluminal spread of bile duct disease as well as histological and cytological examination of biopsies obtained under vision. Eight PTCs were performed without complication in seven patients with cancer of the bile duct. In four, the histology and extent of the tumour was defined endoscopically before any surgical intervention. In three others the results of treatment were objectified. A flexible choledochoscope, as used intraoperatively, was employed (CHF-P10). A stepwise dilatation of the percutaneous access-route was undertaken in several sessions in order to avoid bleeding complications. The procedure is done without general anaesthesia.
Collapse
Affiliation(s)
- H J Brambs
- Abteilung für Röntgendiagnostik, Universität Freiburg
| | | | | | | | | | | | | |
Collapse
|
47
|
Wani NA, Shah IA. Hydatid cysts in muscles. J Indian Med Assoc 1986; 84:385-6. [PMID: 3585018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
48
|
Abstract
We reviewed 5680 autopsy protocols in order to determine the frequency of Multiple Primary Malignant Tumors (MPMT) in different organs. The large bowel was the organ most frequently involved, making up to 32 per cent of all MPMT cases. Of 26 patients with colorectal MPMT, six were multicentric in the large bowel, and 20 were associated with extracolonic malignancies. The tissues harboring primary malignancies were, in order of decreasing frequency, liver, lung, and female and male reproductive organs. We compared the exact location of large bowel cancers in patients with and without a prior cholecystectomy; there was no statistically significant difference between the two groups, especially for right-sided colonic carcinoma in women.
Collapse
|
49
|
Shah IA, Alfsen GC. Multiple primary malignant tumors involving the liver. Arch Pathol Lab Med 1984; 108:315-7. [PMID: 6322724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We reviewed 5,680 autopsy protocols from the Black Forest area of West Germany and found 2,005 (35.3%) malignant neoplasms; among them there were 93 cases (4.9%) with 186 (9.3%) multiple primary malignant tumors (MPMTs) arising in two different organs or organ systems. Whereas single primary malignant neoplasms of the liver constituted only 3.4% of the total malignant neoplasms, the liver was involved in 11% cases of MPMTs. We also compiled data on the involvement of other organs with MPMTs.
Collapse
|
50
|
Abstract
We report a case of Wegener's granulomatosis (WG) which differed significantly from the WHO-definition. The patient presented himself with fever and skin lesions which exacerbated after penicillin therapy. The nasal biopsy did not reveal the expected classical vasculitis and granulomas, which were present at autopsy only in the liver and spleen. We emphasize that vasculitis and granulomas may be absent in the biopsy specimen. We stress the institution of chemotherapy with cyclophosphamide, once the clinicopathological impression of WG is probable.
Collapse
|