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Khandelwal G, Alagarsamy R, Roychoudhury A, Bhutia O, Shariff A. Cross-Sectional Study of Serum Metal Ions in Patients With Metal Implants in the Maxillofacial Region. J Maxillofac Oral Surg 2023; 22:1034-1039. [PMID: 38105820 PMCID: PMC10719183 DOI: 10.1007/s12663-023-01988-3] [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] [Received: 02/14/2023] [Accepted: 08/03/2023] [Indexed: 12/19/2023] Open
Abstract
Purpose The purpose of the present study was to measure the serum metal ion levels (titanium, cobalt, chromium) in patients who have metal implants in the maxillofacial region. Methods The investigators implemented a cross sectional study on patients treated with procedures requiring metal implants for management of maxillofacial trauma, fixation for orthognathic surgery, and total temporomandibular joint replacement (TJR). Inductively coupled plasma mass spectrometry was used as an analytical method to detect metal ions in serum samples. Results The study comprised of 50 patients who were divided into 4 groups- group I- total TJR (n = 18), group II- orthognathic (n = 8), group III- trauma (n = 8), and group IV- control (n = 16). The mean values of metal ions level were raised than the control group. Conclusion The present study's results suggest a rise in serum metal ion levels after the metal implantation in maxillofacial region. None of the patients had any abnormal signs and symptoms due to raised metal levels. Further studies are warranted to correlate the serum metal ion levels and their clinical relevance.
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Affiliation(s)
- Garima Khandelwal
- Department of Oral and Maxillofacial Surgery, All India Institute of Medical Sciences, New Delhi, India
| | - Ragavi Alagarsamy
- Department of Burns, Plastic and Maxillofacial Surgery, Safdarjung Hospital, New Delhi, India
| | - Ajoy Roychoudhury
- Department of Oral and Maxillofacial Surgery, Centre of Dental Education and Research, All India Institute of Medical Sciences, New Delhi, 110029 India
| | - Ongkila Bhutia
- Department of Oral and Maxillofacial Surgery, All India Institute of Medical Sciences, New Delhi, India
| | - A. Shariff
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, 110029 India
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Kajal S, Kairo AK, Quadri JA, Sarwar S, Ahmed A, Shamim A, Kakkar A, Shariff A, Kumar R, Thakar A. Can Superoxide Anions Predict the Malignant Potential of Carotid body Tumor? - A Pilot Study. Indian J Otolaryngol Head Neck Surg 2023; 75:1819-1825. [PMID: 37636665 PMCID: PMC10447714 DOI: 10.1007/s12070-023-03623-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 02/21/2023] [Indexed: 08/29/2023] Open
Abstract
Currently, there is no consensus on estimating the malignant potential of Carotid Body Tumor (CBT) and the only way to predict a metastatic CBT is through DOTANOC Positron Emission Tomography (PET) scan. There is a well-established correlation between CBT and superoxide anions inside tumor cells. The purpose of this pilot study was to measure superoxide anions inside CBT cells and find if these can be used as marker to predict malignant potential of CBT. The results were also co-related with findings of DOTANOC PET scan retrospectively. The CBT tissue from 10 patients was stained using a fluorogenic dye and superoxide anions were measured by analysis of fluorescent image. The patients were divided into two groups - First group with four patients having potentially malignant CBT based upon clinico-surgical characteristics and second group with the rest of the six patients. It was seen that the superoxide anions were highest in the first group which included patients with metastatic carotid body tumor, patients with multiple paragangliomas and patient with positive family history (p = 0.011). The same patients also had metastasis and multiple tumors detected on DOTANOC PET scan. It was concluded that measuring superoxide anions in excised tumor tissue can be used to estimate malignant potential of CBT and can identify patients who truly require DOTANOC PET scan; without affecting the treatment, as it is an expensive investigation involving ionizing radiation and may not be available in all centres. Supplementary Information The online version contains supplementary material available at 10.1007/s12070-023-03623-6.
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Affiliation(s)
- S Kajal
- Department of Otorhinolaryngology and Head-Neck Surgery, All India Institute of Medical Sciences (AIIMS), New Delhi Delhi, India
| | - Arvind Kumar Kairo
- Department of Otorhinolaryngology and Head-Neck Surgery, All India Institute of Medical Sciences (AIIMS), New Delhi Delhi, India
| | | | - Saba Sarwar
- Department of Anatomy, AIIMS, New Delhi Delhi, India
| | - Anam Ahmed
- Department of Anatomy, AIIMS, New Delhi Delhi, India
| | - Ahmad Shamim
- Department of Nuclear Medicine, AIIMS, New Delhi Delhi, India
| | | | - A Shariff
- Department of Anatomy, AIIMS, New Delhi Delhi, India
| | - Rakesh Kumar
- Department of Otorhinolaryngology and Head-Neck Surgery, All India Institute of Medical Sciences (AIIMS), New Delhi Delhi, India
| | - Alok Thakar
- Department of Otorhinolaryngology and Head-Neck Surgery, All India Institute of Medical Sciences (AIIMS), New Delhi Delhi, India
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Khandelwal G, Roychoudhury A, Bhutia O, Shariff A. Longitudinal surveillance of serum titanium ion levels in patients with indigenous 3D printed total temporomandibular joint replacement. Sci Rep 2023; 13:7275. [PMID: 37142652 PMCID: PMC10160034 DOI: 10.1038/s41598-023-33229-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 04/10/2023] [Indexed: 05/06/2023] Open
Abstract
The purpose of this longitudinal study was to surveil the serum titanium ion levels at various time intervals in patients with indigenous 3D-printed total temporomandibular joint replacement (TMJ TJR). The study was conducted on 11 patients (male: 8; female: 3) who had undergone unilateral or bilateral TMJ TJR. Blood samples were drawn preoperatively (T0), 3 months (T1), 6 months (T2), and 1 year (T3) postoperatively. Data were analyzed and a p value of < 0.05 was considered statistically significant. The mean serum titanium ion levels at T0, T1, T2, and T3 was 9.34 ± 8.70 µg/L (mcg/L), 35.97 ± 20.27 mcg/L, 31.68 ± 17.03 mcg/L, and 47.91 ± 15.47 mcg/L respectively. The mean serum titanium ion levels increased significantly at T1 (p = 0.009), T2 (p = 0.032), and T3 (p = 0.00) interval. There was no significant difference between unilateral and bilateral groups. Serum titanium ion continued to show increased levels till the last follow-up of 1 year. These initial serum titanium ion levels increase is due to the initial wear phase of the prosthesis which manifests over 1 year. Further studies with large sample sizes and long-term follow-ups are required to see the deleterious effect if any on the TMJ TJR.
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Affiliation(s)
- Garima Khandelwal
- Department of Oral and Maxillofacial Surgery, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Ajoy Roychoudhury
- Department of Oral and Maxillofacial Surgery, All India Institute of Medical Sciences, New Delhi, 110029, India.
| | - Ongkila Bhutia
- Department of Oral and Maxillofacial Surgery, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - A Shariff
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, 110029, India
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Legocki AT, Lee AY, Ding L, Moshiri Y, Zepeda EM, Gillette TB, Grant LE, Shariff A, Touch P, Lee CS, Tarczy-Hornoch K, Cabrera MT. Multivariate Models to Diagnose Early Referral-Warranted Retinopathy of Prematurity With Handheld Optical Coherence Tomography. Transl Vis Sci Technol 2023; 12:26. [PMID: 37223917 PMCID: PMC10214879 DOI: 10.1167/tvst.12.5.26] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 04/23/2023] [Indexed: 05/25/2023] Open
Abstract
Purpose The purpose of this study was to create multivariate models predicting early referral-warranted retinopathy of prematurity (ROP) using non-contact handheld spectral-domain optical coherence tomography (OCT) and demographic data. Methods Between July 2015 and February 2018, infants ≤1500 grams birth weight or ≤30 weeks gestational age from 2 academic neonatal intensive care units were eligible for this study. Infants were excluded if they were too unstable to participate in ophthalmologic examination (2), had inadequate image quality (20), or received prior ROP treatment (2). Multivariate models were created using demographic variables and imaging findings to identify early referral-warranted ROP (referral-warranted ROP and/or pre-plus disease) by routine indirect ophthalmoscopy. Results A total of 167 imaging sessions of 71 infants (45% male infants, gestational age 28.2+/-2.8 weeks, and birth weight 995.6+/-292.0 grams) were included. Twelve of 71 infants (17%) developed early referral-warranted ROP. The area under the receiver operating characteristic curve (AUC) was 0.94 for the generalized linear mixed model (sensitivity = 95.5% and specificity = 80.7%) and 0.83 for the machine learning model (sensitivity = 91.7% and specificity = 77.8%). The strongest variables in both models were birth weight, image-based Vitreous Opacity Ratio (an estimate of opacity density), vessel elevation, and hyporeflective vessels. A model using only birth weight and gestational age yielded an AUC of 0.68 (sensitivity = 77.3% and specificity = 63.4%), and a model using only imaging biomarkers yielded 0.88 (sensitivity = 81.8% and specificity = 84.8%). Conclusions A generalized linear mixed model containing handheld OCT biomarkers can identify early referral-warranted ROP. Machine learning produced a less optimal model. Translational Relevance With further validation, this work may lead to a better-tolerated ROP screening tool.
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Affiliation(s)
- Alex T. Legocki
- Department of Ophthalmology, University of Washington, Seattle, WA, USA
| | - Aaron Y. Lee
- Department of Ophthalmology, University of Washington, Seattle, WA, USA
- The Roger and Angie Karalis Johnson Retina Center, Seattle, WA, USA
| | - Leona Ding
- Department of Ophthalmology, University of Washington, Seattle, WA, USA
| | - Yasman Moshiri
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami, Miami, FL, USA
| | - Emily M. Zepeda
- Department of Ophthalmology, Dean McGee Eye Institute, University of Oklahoma, Oklahoma City, OK, USA
| | - Thomas B. Gillette
- Department of Ophthalmology, University of South Florida Eye Institute, Tampa, FL, USA
| | - Laura E. Grant
- Department of Ophthalmology, Millman-Derr Center for Eye Care, Rochester Hills, MI, USA
| | - Ayesha Shariff
- Department of Ophthalmology, New Mexico Veterans Affairs Medical Center, University of New Mexico, Albuquerque, NM, USA
| | - Phanith Touch
- Department of Ophthalmology, University of Washington, Seattle, WA, USA
| | - Cecilia S. Lee
- Department of Ophthalmology, University of Washington, Seattle, WA, USA
- The Roger and Angie Karalis Johnson Retina Center, Seattle, WA, USA
| | - Kristina Tarczy-Hornoch
- Department of Ophthalmology, University of Washington, Seattle, WA, USA
- Division of Ophthalmology, Seattle Children's Hospital, Seattle, WA, USA
| | - Michelle T. Cabrera
- Department of Ophthalmology, University of Washington, Seattle, WA, USA
- Division of Ophthalmology, Seattle Children's Hospital, Seattle, WA, USA
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Baruhee D, Ganapathy A, Singh S, Sarwar S, Banerjee A, Bhukya S, Quadri JA, Shariff A. Morphology of human fetal enteric neurons: A comparative study of different segments of the colon. Morphologie 2023; 107:38-46. [PMID: 35764504 DOI: 10.1016/j.morpho.2022.03.001] [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] [Received: 12/31/2021] [Revised: 02/23/2022] [Accepted: 03/06/2022] [Indexed: 10/17/2022]
Abstract
OBJECTIVES The Enteric Nervous System (ENS) present in the wall of the gut is currently being explored because of its influence on the gut and beyond. In this context, the morphology of developing ENS has not been completely understood in humans due to lack of adequate literature. The aim of the present study was to observe the morphology of the enteric neurons in the human fetal colon and compare the findings in ascending colon a midgut derivative and descending colon a hindgut derivative at various weeks of gestation (WG). MATERIAL AND METHODS Tissue samples from 15 aborted fetuses (11 WG to 2 months postnatal) were processed for Cresyl violet, H & E staining, and NADPH Diaphorase histochemistry. The morphometric analysis was done by calculating the neuronal number density and neuronal fractional area. The Student t-test; Mann-Whitney test and Wilcoxon signed-rank test were used to analyze the data. RESULTS The muscularis externa with two distinct layers was visible as early as 13 WG and the muscularis mucosae was first observed at 18 WG. The size of the myenteric neurons appeared to be larger with increasing weeks of gestation suggesting a process of neuronal maturation. The neuronal number density and neuronal fractional area seemed to be reduced with advancing fetal age. There was no marked difference between the ascending and sigmoid colon. At 23 and 26 WG, a mature pattern of nitrergic innervation was observed. CONCLUSION This study is done on human fetal tissue samples unlike previous studies on animal samples to comprehend the morphology of developing ENS. It will aid in understanding the effect of ENS on various neurological disorders.
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Affiliation(s)
- D Baruhee
- Department of Obstretics and Gynaecology, ESI, PGIMSR, Basaidarapur, New Delhi, India
| | - A Ganapathy
- Department of Anatomy, All India Institute of Medical Sciences, Bhubaneswar, India
| | - S Singh
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India.
| | - S Sarwar
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India
| | - A Banerjee
- Department of Anaesthesiology and Critical care, Sanjay Gandhi post graduate institute, Lucknow, India
| | - S Bhukya
- Department of Anatomy, Armed forces medical college, Pune, India
| | - J A Quadri
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India
| | - A Shariff
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India
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Legocki AT, Moshiri Y, Zepeda EM, Gillette TB, Shariff A, Grant LE, Ding L, Lee AY, Lee CS, Tarczy-Hornoch K, Cabrera MT. Dome-shaped macula in premature infants visualized by handheld spectral-domain optical coherence tomography. J AAPOS 2021; 25:153.e1-153.e6. [PMID: 34044111 PMCID: PMC8328941 DOI: 10.1016/j.jaapos.2020.12.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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] [Received: 08/12/2020] [Revised: 12/07/2020] [Accepted: 12/19/2020] [Indexed: 10/21/2022]
Abstract
PURPOSE To describe dome-shaped macula and associated clinical findings in premature infants. METHODS This prospective, observational cohort study included a consecutive sample of premature infants screened for retinopathy of prematurity (ROP) with 9-month follow-up. Handheld spectral domain optical coherence tomography (SD-OCT) was performed at the time of ROP screening. Images were assessed for dome-shaped macula, cystoid macular edema, epiretinal membrane, vitreous bands, and punctate hyperreflective vitreous opacities. Dome height measurements were performed in a subset of images. Teller visual acuity and cycloplegic refraction were performed at an adjusted age of 8-10 months. RESULTS Of 37 infants (74 eyes; 49% male; mean gestational age 27.8 ± 3.2 weeks; mean birth weight 949 ± 284 g), 24/37 (65%) demonstrated dome-shaped macula in at least one eye (13 both eyes, 5 right eye only, and 6 left eye only). Of the 74 eyes, 26 (35%) could be reliably measured, with a mean dome height of 139.0 ± 72.3 μm (range, 54-369 μm). Presence of dome-shaped macula was associated with a diagnosis of ROP (P = 0.02; OR, 3.03; 95% CI, 1.18-7.82) and pre-plus or plus disease (P = 0.02; OR, 4.20; 95% CI, 1.05-16.78). Infants with dome-shaped macula had lower birth weight compared with those without (877 vs 1081 g; P = 0.04). No associations with other demographics, OCT findings, and 9-month refractive outcomes were found. CONCLUSIONS Dome-shaped macula was frequently identified by handheld SD-OCT in premature infants, especially those with lower birth weight and severe ROP. The long-term clinical significance of this finding is unknown.
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Affiliation(s)
- Alex T Legocki
- Department of Ophthalmology, University of Washington, Seattle, Washington
| | - Yasman Moshiri
- Department of Ophthalmology, University of Washington, Seattle, Washington
| | - Emily M Zepeda
- Department of Ophthalmology, Dean McGee Eye Institute, Oklahoma City, Oklahoma
| | - Thomas B Gillette
- Department of Ophthalmology, University of South Florida Eye Institute, Tampa, Florida
| | - Ayesha Shariff
- Department of Ophthalmology, Case Western Reserve University, Cleveland, Ohio
| | - Laura E Grant
- Department of Ophthalmology, Henry Ford Hospital, Detroit, Michigan
| | - Leona Ding
- Department of Ophthalmology, University of Washington, Seattle, Washington
| | - Aaron Y Lee
- Department of Ophthalmology, University of Washington, Seattle, Washington
| | - Cecilia S Lee
- Department of Ophthalmology, University of Washington, Seattle, Washington
| | - Kristina Tarczy-Hornoch
- Department of Ophthalmology, University of Washington, Seattle, Washington; Department of Ophthalmology, Seattle Children's Hospital, Seattle, Washington
| | - Michelle T Cabrera
- Department of Ophthalmology, University of Washington, Seattle, Washington; Department of Ophthalmology, Seattle Children's Hospital, Seattle, Washington.
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Sarwar S, Quadri JA, Kumar M, Singh S, Das P, Nag TC, Shariff A. Apoptotic and Degenerative Changes in the Enteric Nervous System Following Exposure to Fluoride During Pre- and Post-natal Periods. Biol Trace Elem Res 2021; 199:1456-1468. [PMID: 32594358 DOI: 10.1007/s12011-020-02249-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 06/11/2020] [Indexed: 12/19/2022]
Abstract
Children born in fluorosis endemic areas usually suffer from gastrointestinal complications and are unable to attain normal growth as per their age group. The enteric nervous system (ENS) controls gut movement and functions. It is highly vulnerable to any ingested toxins. Based on observations, it was hypothesized that fluoride exposure during pregnancy and lactation might induce ENS developmental defects. The aim of this study is to investigate the effects of fluoride exposure during pregnancy and lactation on ENS of the first-generation rat pups. After confirmation of pregnancy, female rats were divided into 3 groups and kept on normal water (group 1), 50 ppm of fluoride (group 2), and 100 ppm of fluoride (group 3). The fluoride exposure started at the start of pregnancy and continued until lactation. On the 21st post-natal day, the pups were euthanized and the gut tissue and blood were harvested and subjected to fluoride measurement, oxidative stress estimation, histopathological and ultrastructural analysis, TUNEL, and immunofluorescence. The quantitative expressional analysis of embryonic lethal abnormal vision-like 4 (ELAVL4) (a pan-neuronal marker) and glial fibrillary acidic protein (GFAP) (a glial cell marker) genes was performed by RT-qPCR. An increase in oxidative stress, subcellular and cellular injuries, and apoptosis in enteric neuronal, glial, and epithelial cells was observed in the distal colon of the first-generation pups. Ganglionic degeneration, reduced expression of HuC/D and GFAP, altered colon muscle layer thickness, and tissue edema were observed in the fluoride-treated groups compared with the control. Fluoride exposure during prenatal and lactation period leads to subcellular and cellular injuries due to increased oxidative stress and apoptosis in the ENS. The reduction in the number of neurons and glia due to increased apoptosis may cause alterations in ENS development.
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Affiliation(s)
- Saba Sarwar
- Clinical Ecotoxicology (Diagnostic & Research) Facility, All India Institute of Medical Sciences, New Delhi, 110029, India
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Javed Ahsan Quadri
- Clinical Ecotoxicology (Diagnostic & Research) Facility, All India Institute of Medical Sciences, New Delhi, 110029, India.
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, 110029, India.
| | - Manoj Kumar
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Seema Singh
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Prasenjit Das
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Tapas Chandra Nag
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - A Shariff
- Clinical Ecotoxicology (Diagnostic & Research) Facility, All India Institute of Medical Sciences, New Delhi, 110029, India
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, 110029, India
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Jaiswal M, Ganapathy A, Singh S, Sarwar S, Quadri JA, Rani N, Das P, Pal S, Shariff A. Morphology of enteric glia in colorectal carcinoma: A comparative study of tumor site and its proximal normal margin. Morphologie 2020; 105:267-274. [PMID: 33309198 DOI: 10.1016/j.morpho.2020.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 10/19/2020] [Accepted: 11/05/2020] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Colorectal carcinoma (CRC) is the third most common cancer in the world and fifth most common cancer in India. To understand the extent of perineural invasion (PNI) in CRC it is essential to study the morphology of enteric glial cells (EGCs). The aim of the study was to analyze the numerical density of EGCs and area of myenteric ganglia (MG) in the colonic tissue samples collected from CRC patients. MATERIAL AND METHODS Fifteen intraoperative tissue specimens were collected from the tumor site and 2cm proximal to the upper extent of tumor. The samples were divided into four groups: group 1 (n=15): proximal tumor free colonic tissue; group 2 (n=3): well-differentiated; group 3 (n=8): moderately differentiated; group 4 (n=4): poorly differentiated adenocarcinoma. After processing the tissues were subjected to hematoxylin and eosin staining. The anti-S100β and anti-GFAP antibodies were used to observe the EGCs. RESULTS In the H&E stained sections the number of myenteric ganglia appeared to be decreasing with increasing grade of adenocarcinoma. Immunostaining showed significant decreasing pattern in the numerical density of EGCs per myenteric ganglion and mean area of myenteric ganglia in relation to the thickness of circular muscle, corresponding to the increasing grades of adenocarcinoma. The morphology of the EGCs remained unaltered in the colonic tissue adjacent to the tumor site. CONCLUSION Significant loss of EGCs and neurodegeneration corresponded with the grade of tumor emphasizing on its prognostic value. The PNI was not seen in the clear margin proximal to the tumor site.
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Affiliation(s)
- M Jaiswal
- Department of anatomy, All India Institute of Medical Sciences, 110029 New Delhi, India
| | - A Ganapathy
- Department of anatomy, All India Institute of Medical Sciences, 110029 New Delhi, India
| | - S Singh
- Department of anatomy, All India Institute of Medical Sciences, 110029 New Delhi, India.
| | - S Sarwar
- Department of anatomy, All India Institute of Medical Sciences, 110029 New Delhi, India
| | - J A Quadri
- Department of anatomy, All India Institute of Medical Sciences, 110029 New Delhi, India
| | - N Rani
- Department of anatomy, All India Institute of Medical Sciences, 110029 New Delhi, India
| | - P Das
- Department of pathology, All India Institute of Medical Sciences, New Delhi, India
| | - S Pal
- Department of gastrointestinal surgery, All India Institute of Medical Sciences, New Delhi, India
| | - A Shariff
- Department of anatomy, All India Institute of Medical Sciences, 110029 New Delhi, India
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Legocki AT, Zepeda EM, Gillette TB, Grant LE, Shariff A, Touch P, Lee AY, Ding L, Estrada MM, Tarczy-Hornoch K, Lee CS, Mayock DE, Pepple KL, Cabrera MT. Vitreous Findings by Handheld Spectral-Domain OCT Correlate with Retinopathy of Prematurity Severity. Ophthalmol Retina 2020; 4:1008-1015. [PMID: 32446843 DOI: 10.1016/j.oret.2020.03.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 03/25/2020] [Accepted: 03/26/2020] [Indexed: 11/24/2022]
Abstract
PURPOSE To evaluate the association between retinopathy of prematurity (ROP) and vitreous findings in premature infants detected by handheld spectral-domain (SD) OCT. DESIGN Prospective, observational cohort study. PARTICIPANTS Consecutive sample of 92 premature infants requiring ROP screening at 2 academic neonatal intensive care units between July 2015 and March 2018. METHODS Infants underwent handheld SD OCT at the time of routine ROP examinations. Two masked, trained graders analyzed right-eye vitreoretinal findings, including semiautomated quantification of punctate hyperreflective vitreous opacities within 5 foveal or parafoveal B-scans (vitreous opacity ratio). MAIN OUTCOME MEASURES Excluding posttreatment data, vitreous findings were compared with clinical ROP diagnoses. RESULTS Agreement between image graders for all vitreoretinal findings was 91% (κ = 0.86; 95% confidence interval, 0.82-0.90; P < 0.001). Among 92 infants undergoing 280 imaging sessions (52% male; mean gestational age, 28.3 ± 2.8 weeks; mean birthweight, 1014.5 ± 285.0 g), 36 of 92 (39%) demonstrated ROP. Punctate hyperreflective vitreous opacities were identified in 61 of 92 infants (66%). The presence of punctate hyperreflective vitreous opacities at least once was associated with a diagnosis of ROP (62% vs. 29% without opacities; P = 0.003), maximum ROP stage (P = 0.001), preplus or plus disease (24% vs. 5%; P = 0.005), and type 1 disease (14% vs. 2%; P = 0.03). Among 29 infants (45 imaging sessions) with right-eye punctate hyperreflective vitreous opacities, the vitreous opacity ratio from 2 graders (F1 score, 0.82 ± 0.36; Dice coefficient, 0.97 ± 0.04) correlated with ROP stage (P = 0.02). Tractional vitreous bands on imaging correlated with plus disease status (29% vs. 5% without bands; P = 0.05). CONCLUSIONS Punctate hyperreflective vitreous opacities and tractional vitreous bands predict the presence and severity of ROP. Further studies should explore handheld OCT as a noninvasive ROP screening tool.
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Affiliation(s)
- Alex T Legocki
- Department of Ophthalmology, University of Washington, Seattle, Washington
| | - Emily M Zepeda
- Department of Ophthalmology, University of Washington, Seattle, Washington
| | - Thomas B Gillette
- Department of Ophthalmology, University of Washington, Seattle, Washington
| | - Laura E Grant
- Department of Ophthalmology, University of Washington, Seattle, Washington
| | - Ayesha Shariff
- Department of Ophthalmology, University of Washington, Seattle, Washington
| | - Phanith Touch
- Department of Ophthalmology, University of Washington, Seattle, Washington
| | - Aaron Y Lee
- Department of Ophthalmology, University of Washington, Seattle, Washington
| | - Leona Ding
- Department of Ophthalmology, University of Washington, Seattle, Washington
| | - Marcela M Estrada
- Department of Ophthalmology, University of Washington, Seattle, Washington
| | - Kristina Tarczy-Hornoch
- Department of Ophthalmology, University of Washington, Seattle, Washington; Department of Ophthalmology, Seattle Children's Hospital, Seattle, Washington
| | - Cecilia S Lee
- Department of Ophthalmology, University of Washington, Seattle, Washington
| | - Dennis E Mayock
- Department of Pediatrics, University of Washington, Seattle, Washington; Department of Pediatrics, Seattle Children's Hospital, Seattle, Washington
| | - Kathryn L Pepple
- Department of Ophthalmology, University of Washington, Seattle, Washington
| | - Michelle T Cabrera
- Department of Ophthalmology, University of Washington, Seattle, Washington; Department of Ophthalmology, Seattle Children's Hospital, Seattle, Washington.
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Zepeda EM, Shariff A, Gillette TB, Grant L, Ding L, Tarczy-Hornoch K, Cabrera MT. Vitreous Bands Identified by Handheld Spectral-Domain Optical Coherence Tomography Among Premature Infants. JAMA Ophthalmol 2019; 136:753-758. [PMID: 29799932 DOI: 10.1001/jamaophthalmol.2018.1509] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Importance Handheld spectral-domain optical coherence tomography (SD-OCT) can provide insights into the complex interactions occurring at the vitreoretinal interface in retinopathy of prematurity (ROP) to enhance our understanding of ROP pathology. Objective To characterize vitreous bands in premature infants with use of handheld SD-OCT. Design, Setting, and Participants Prospective cohort study conducted from July 7, 2015, to February 28, 2017, at 2 university-based neonatal intensive care units. Seventy-three premature infants who required routine ROP screening examination were recruited. Informed consent was obtained from all legal guardians. Trained graders who were masked to the clinical assessment analyzed each SD-OCT scan of the right eye for vitreoretinal findings. A third trained grader mediated disagreements. Main Outcomes and Measures Associations between the presence of vitreous bands in premature infants with ROP diagnoses and the presence of other vitreoretinal SD-OCT findings were investigated. Results Of the 73 infants recruited, 6 infants' parents withdrew their children from the study, and 2 infants were too hemodynamically unstable for imaging, leaving a total of 65 participants. Of these, 32 (49%) were female, 36 (55%) were white, 10 (15%) were Hispanic, 3 (5%) were Native American, 4 (6%) were African American, 4 (7%) were Asian/Pacific Islander, and 8 (12%) were other. The mean (SD) gestational age was 28 (2.7) weeks, the mean (SD) birth weight was 997 g (286 g), and the mean (SD) postmenstrual age at imaging was 34 (3) weeks (mean [SD] total of 3 [2] imaging sessions). Comparing the 24 infants (37%) who had a right eye vitreous band at any time with the 41 (63%) who did not, no difference in mean birth weight, gestational age, postmenstrual age at imaging, sex, or race/ethnicity was identified. No associations with ROP stage (eg, in 6 [25%] infants with vitreous bands vs 4 [9.8%] in those without; P = .23), presence of plus disease (2 [8%] vs 2 [5%]; P = .84), or type 1 ROP (3 [12%] vs 3 [7%]; P = .66) were identified. Vitreous bands were associated with epiretinal membrane detected on SD-OCT (P = .001) with an odds ratio of 9.4 (95% CI, 2.8-31.3) in 15 [62%] infants with vitreous bands vs 6 [15%] in those without. Vitreous bands were also associated with cystoid macular edema (in 15 [62%] infants with vitreous bands vs 1 [27%] in those without; P = .005) with an odds ratio of 4.5 (95% CI, 1.5-13.3). Conclusions and Relevance In this study, the development of vitreous bands was associated with both cystoid macular edema and epiretinal membrane. These findings suggest a tractional pathogenesis to these entities among premature infants. This study did not find a direct association between vitreous bands and severe ROP. Additional study is needed to determine whether vitreous bands represent subclinical hyaloidal organization leading to retinal detachment in advanced ROP.
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Affiliation(s)
- Emily M Zepeda
- Department of Ophthalmology, University of Washington, Seattle
| | - Ayesha Shariff
- Department of Ophthalmology, Case Western Reserve University, Cleveland, Ohio
| | - Thomas B Gillette
- Department of Ophthalmology, University of Washington, Seattle.,Department of Ophthalmology, Seattle Children's Hospital, Seattle, Washington
| | - Laura Grant
- Department of Ophthalmology, Henry Ford Hospital, Detroit, Michigan
| | - Leona Ding
- Department of Ophthalmology, University of Washington, Seattle
| | - Kristina Tarczy-Hornoch
- Department of Ophthalmology, University of Washington, Seattle.,Department of Ophthalmology, Seattle Children's Hospital, Seattle, Washington
| | - Michelle T Cabrera
- Department of Ophthalmology, University of Washington, Seattle.,Department of Ophthalmology, Seattle Children's Hospital, Seattle, Washington
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Rai S, Siddiqui OM, Meher SK, Shariff A, Banga S. Role of Nursing Informatics in Implementation of SNOMED-CT in India. Stud Health Technol Inform 2019; 264:1718-1719. [PMID: 31438309 DOI: 10.3233/shti190613] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
SNOMED-CT project under the Ministry of Health and Family Welfare is operational at AIIMS since July 2016. A team of nurses were recruited under SNOMED project who actively works for integrating existing EHR with SNOMED-CT, monitoring, training of users auditing the data, resets creation and development of National Drug Database. This paper emphasizes role of Nursing Informatics in implementation of SNOMED-CT project in India as well as in any other country.
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Affiliation(s)
- Sweety Rai
- All India Institute of Medical sciences, Ansari Nagar, New Delhi, India-1
| | - Owais M Siddiqui
- All India Institute of Medical sciences, Ansari Nagar, New Delhi, India-1
| | - Susil K Meher
- All India Institute of Medical sciences, Ansari Nagar, New Delhi, India-1
| | - A Shariff
- All India Institute of Medical sciences, Ansari Nagar, New Delhi, India-1
| | - Shefali Banga
- All India Institute of Medical sciences, Ansari Nagar, New Delhi, India-1
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Subhash B, Saba S, Quadri J, Harisha K, Singh S, Nag T, Shariff A. Ultrastructural features of enteric ganglia in human foetuses. J ANAT SOC INDIA 2018. [DOI: 10.1016/j.jasi.2018.06.226] [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: 11/28/2022]
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Quadri JA, Sarwar S, Pinky, Kar P, Singh S, Mallick SR, Arava S, Nag TC, Roy TS, Shariff A. Fluoride induced tissue hypercalcemia, IL-17 mediated inflammation and apoptosis lead to cardiomyopathy: Ultrastructural and biochemical findings. Toxicology 2018; 406-407:44-57. [PMID: 29800585 DOI: 10.1016/j.tox.2018.05.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 05/14/2018] [Accepted: 05/18/2018] [Indexed: 02/09/2023]
Abstract
An increased prevalence of cardiac complications has been observed in residents of fluorosis endemic areas chronically exposed to fluoride. Fluoride induces soft tissue injury due to oxidative stress, lipid peroxidation (LPO) and mitochondriopathy. It was hypothesized that chronic fluoride exposure induces apoptosis in cardiomyocytes due to inflammation, lysis of extra cellular matrix and altered calcium metabolism. This study was planned to evaluate the effects of chronic fluoride exposure and the mechanism of action in the cardiac muscle. Fifteen week old male Wistar rats were administered a human equivalent dose of fluoride (50 and 100 ppm ad-libitum, HED = 5 & 10 ppm in human) for 75-days. After 75-days of fluoride exposure, the animals were euthanized and fluoride, oxidative stress (SOD, GPX, Catalase activities) and LPO were measured. Histopathological and ultrastructural pathological examinations were conducted on the cardiac tissues using light, atomic force and electron microscopies. The cardiac tissues were also assessed for apoptosis (TUNEL/Caspase assays), and tissue calcium levels (Alizarin-assay and SEM-EDX). Tissue inflammation and expression of IL-17, MMP-9, Caspase-3 and Bcl-2 were evaluated. In the fluoride exposed groups, a significant (≤0.05) increase in levels of oxidative stress, LPO and apoptosis were observed. The IL-17, MMP-9 and Caspase-3 were significantly (≤0.05) higher in the cardiac muscle after chronic fluoride exposure. The fluoride seems to have induced inflammation in the cardiac tissues, as well as an increase in tissue calcium (≤0.05). There was significant damage to cardiac muscle fibres including, thinning, distortion and neo-vasculogenesis following chronic fluoride exposure. Mitochondriopathy, lysis of ground substance, oedema, and hyper-vacuolation was seen in fluoride treated groups. Remarkable levels of distortion and bending in Z band were observed under the AFM. Many of these observed changes mimic those occurring in cardiomegaly, cardiac hypertrophy and cardiomyopathies.
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Affiliation(s)
| | - Saba Sarwar
- Department of Anatomy, AIIMS, New Delhi, India
| | - Pinky
- Department of Anatomy, AIIMS, New Delhi, India
| | - Parmita Kar
- Department of Endocrinology and Metabolism, AIIMS, New Delhi, India
| | - Seema Singh
- Department of Anatomy, AIIMS, New Delhi, India
| | | | | | | | | | - A Shariff
- Department of Anatomy, AIIMS, New Delhi, India
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Quadri JA, Sarwar S, Sinha A, Kalaivani M, Dinda AK, Bagga A, Roy TS, Das TK, Shariff A. Fluoride-associated ultrastructural changes and apoptosis in human renal tubule: a pilot study. Hum Exp Toxicol 2018; 37:1199-1206. [DOI: 10.1177/0960327118755257] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The susceptibility of the kidneys to fluoride toxicity can largely be attributed to its anatomy and function. As the filtrate moves along the complex tubular structure of each nephron, it is concentrated in the proximal and distal tubules and collecting duct. It has been frequently observed that the children suffering from renal impairments also have some symptoms of dental and skeletal fluorosis. The findings suggest that fluoride somehow interferes with renal anatomy and physiology, which may lead to renal pathogenesis. The aim of this study was to evaluate the fluoride-associated nephrotoxicity. A total of 156 patients with childhood nephrotic syndrome were screened and it was observed that 32 of them had significantly high levels ( p ≤ 0.05) of fluoride in urine (4.01 ± 1.83 ppm) and serum (0.1 ± 0.013 ppm). On the basis of urinary fluoride concentration, patients were divided into two groups, namely group 1 (G-1) ( n = 32) containing normal urine fluoride (0.61 ± 0.17 ppm) and group 2 (G-2) ( n = 32) having high urine fluoride concentration (4.01 ± 1.83 ppm). Age-matched healthy subjects ( n = 33) having normal levels of urinary fluoride (0.56 ± 0.15 ppm) were included in the study as control (group 0 (G-0)). Kidney biopsies were taken from G-1 and G-2 only, who were subjected to ultrastructural (transmission electron microscopy) and apoptotic (terminal deoxynucleotidyl transferase deoxyuridine triphosphate nick end labeling) analysis. Various subcellular ultrastructural changes including nuclear disintegration, chromosome condensation, cytoplasmic ground substance lysis, and endoplasmic reticulum blebbing were observed. Increased levels of apoptosis were observed in high fluoride group (G-2) compared to normal fluoride group (G-1). Various degrees of fluoride-associated damages to the architecture of tubular epithelia, such as cell swelling and lysis, cytoplasmic vacuolation, nuclear condensation, apoptosis, and necrosis, were observed.
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Affiliation(s)
- JA Quadri
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India
| | - S Sarwar
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India
| | - A Sinha
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - M Kalaivani
- Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India
| | - AK Dinda
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - A Bagga
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - TS Roy
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India
| | - TK Das
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India
| | - A Shariff
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India
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Subhash B, Shariff A, Singh S, Nag T, Quadri J, Rani N, Saba S, Dheeraj K, Aditi D. Morphology of the myenteric plexus at different gut segments of human foetuses. J ANAT SOC INDIA 2017. [DOI: 10.1016/j.jasi.2017.08.260] [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: 11/24/2022]
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Shariff A, Hillerson D, Ross J, Ayala-Pena E. Stevens-Johnson syndrome secondary to isolated albuterol use. Cutis 2017; 100:E6-E8. [PMID: 28961298] [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: 06/07/2023]
Affiliation(s)
- Ayesha Shariff
- University of New Mexico School of Medicine, Albuquerque, USA
| | | | - Jason Ross
- University of Texas Medical Branch, Galveston, USA
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Quadri J, Shariff A. A comparative study of skeletal fluorosis among adults in two study areas of Bangarpet Taluk, Kolar. Indian J Public Health 2017; 61:60. [DOI: 10.4103/0019-557x.200258] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Quadri JA, Alam MM, Sarwar S, Ghanai A, Shariff A, Das TK. Multiple Myeloma-Like Spinal MRI Findings in Skeletal Fluorosis: An Unusual Presentation of Fluoride Toxicity in Human. Front Oncol 2016; 6:245. [PMID: 27917370 PMCID: PMC5117116 DOI: 10.3389/fonc.2016.00245] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Accepted: 11/04/2016] [Indexed: 11/29/2022] Open
Abstract
Endemic fluorosis is a worldwide environmental problem due to excessive fluoride, commonly due to increased drinking water fluoride levels but sometimes due to other sources such as food with high fluoride content. In India, 21 of the 35 states are known to have health problems associated with fluoride toxicity. The present report is a case of a 50-year-old female who was seen with progressive spinal complications and a MRI of the spine suggestive of multiple myeloma. The MRI of the lumbosacral spine showed a diffuse and heterogeneous marrow signal of the lower dorsal and lumbosacral vertebrae. The MRI was also suggestive of coarse trabeculation and appeared predominantly hypointense on the T1W image and had mixed signal intensity on the T2W image. These findings were suggestive of neoplastic bone marrow infiltration and the presence of a proliferative disorder, with multiple myeloma being the most likely. During the patient workup, it was found that other family members were also having similar complications and, after investigation of these family members, it was found that they are suffering from systemic fluorosis. The patient was then evaluated for skeletal fluorosis, and this condition was found to be present. Multiple myeloma was ruled out by the finding of a negative serum protein electrophoresis. The spinal complications appeared to be mainly due to the compression of the spinal cord and nerve roots by protruding osteophytes, thickening of the posterior longitudinal ligament, and thickening of the ligamentum flavum resulting in a compressive myeloradiculopathy and compressive myelopathy. The finding of multiple myeloma-like findings on the spinal MRI in association with skeletal fluorosis was considered to be a very rare event. This case report underlines the need to consider the presence of spinal skeletal fluorosis when evaluating spinal complications with unusual pseudo-multiple myeloma-like changes on the spinal MRI.
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Affiliation(s)
- Javed Ahsan Quadri
- Anatomy, All India Institute of Medical Sciences (AIIMS) , New Delhi , India
| | - Mohd Meraj Alam
- Surgery, Guwahati Medical College and Hospital , Guwahati , India
| | - Saba Sarwar
- Anatomy, All India Institute of Medical Sciences (AIIMS) , New Delhi , India
| | - Ashraf Ghanai
- Endocrinology, Metabolism and Diabetes, All India Institute of Medical Sciences (AIIMS) , New Delhi , India
| | - A Shariff
- Anatomy, All India Institute of Medical Sciences (AIIMS) , New Delhi , India
| | - Taposh K Das
- Anatomy, All India Institute of Medical Sciences (AIIMS) , New Delhi , India
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Shariff A, Keck L, Zlotoff B. Acne vulgaris in the context of complex medical co-morbities: the management of severe acne vulgaris in a female with retinitis pigmentosa - utilizing pulse dye laser in conjunction with medical therapy. Dermatol Online J 2014; 20:doj_21763. [PMID: 24656277] [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] [Received: 03/17/2014] [Accepted: 03/17/2014] [Indexed: 06/03/2023] Open
Abstract
Acne vulgaris is a pervasive inflammatory disorder of the skin, with multiple etiologies and treatment options. Although first-line therapies exist, it is often the case that a patient will present with an underlying disorder that prohibits the use of most currently accepted treatment modalities. We present a patient with severe acne vulgaris and a history of retinitis pigmentosa who was treated with 595 nanometer pulsed dye laser therapy, in conjunction with therapeutic alternatives to first-line acne medications. Our patient exhibited a significant and sustained improvement with the combined use of 595 nanometer pulsed dye laser, Yaz (drospirenone-ethinyl estradiol), dapsone, topical metronidazole, sodium-sulfacetamide wash, and topical azelaic acid. The positive results in this case, suggest that this combined treatment modality may serve as an example of a safe and effective treatment alternative in the management of acne vulgaris complicated by medical co-morbidities that contraindicate the use of most first-line treatment options.
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Shariff A, Keck L, Zlotoff B. Acne vulgaris in the context of complex medical co-morbities: The Management of Severe Acne Vulgaris in a Female with Retinitis Pigmentosa- Utilizing Pulse Dye Laser in Conjunction with Medical Therapy. Dermatol Online J 2014. [DOI: 10.5070/d3203021763] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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Adepu R, Shariff A. Development, validation and implementation of continuous professional development programmes for community pharmacists. Indian J Pharm Sci 2011; 72:557-63. [PMID: 21694985 PMCID: PMC3116298 DOI: 10.4103/0250-474x.78520] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2010] [Revised: 07/29/2010] [Accepted: 09/06/2010] [Indexed: 12/05/2022] Open
Abstract
In India, structured continuous professional development modules are not available to update the knowledge and skills of the practicing community pharmacists. A prospective study was designed to develop, validate and implement continuous professional development modules and to assess the impact of training programme on knowledge and skills of community pharmacists. Modules were developed by referring to standard texts and data bases and were validated for the content. The impact of training programme on pharmacists’ knowledge and skills was assessed using suitably designed pre and post training knowledge attitude and practice questionnaires, pre and post training questionnaires for individual continuous professional development training sessions, pre and post training patient counseling skill assessment, blood pressure measurement skill assessment and capillary blood glucose check-up skill assessment check-lists. Data was analyzed by applying suitable statistical methods using InStat version 3.01 statistical software. Fourty eight community pharmacists were enrolled in to the study. A statistically significant (P<0.05) improvement was observed in post training knowledge attitude and practice scores and in post training scores of individual training sessions. A statistically significant (P<0.05) improvement was also observed in post training scores of professional skills such as Patient counseling, capillary blood glucose recording and blood pressure measurement skills. The study findings conclude that continuous training updates the knowledge and skills in practicing the pharmaceutical care in their pharmacies.
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Affiliation(s)
- R Adepu
- Department of Pharmacy Practice, JSS College of Pharmacy, SS Nagara, Mysore-570 015, India
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Shariff A. Shaadat Shariff. West J Med 2011. [DOI: 10.1136/bmj.d854] [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: 11/03/2022]
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Abstract
AIM The aim of this study was to evaluate the role of short chain fatty acid administration in mesenteric ischemia reperfusion in rats. METHODS Sixteen 60-day-old male Wistar rats were divided into two groups of eight each. In group I (n=8) normal saline (10 ml/kg) was injected into the ileal lumen. Ischemia reperfusion was achieved by clamping the superior mesenteric artery (SMA) for 30 min and then releasing it for another 30 min. The ileum was harvested for histopathological examination. In group II (n=8) a mixture of short chain fatty acids (10 ml/kg) was injected into the ileal lumen. Ischemia reperfusion was achieved in a similar fashion and the ileum harvested for histopathological examination. Injury was graded according to Chiu's score. RESULTS The ileum in rats from group II showed a lower injury score (0.013+/-0.354) compared to ileum from rats in group I (4.631+/-0.521), and this difference was significant (p<0.001). CONCLUSION Short chain fatty acids significantly decreased the degree of reperfusion injury in the gut in a rat model of mesenteric ischemia reperfusion.
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Affiliation(s)
- A A Baba
- SKIMS, Pediatric Surgery, Srinagar, India.
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Abstract
After 45 days of complete diversion colostomy in male Wistar rats, morphometry of soma and nuclei of NADPH diaphorase positive cells of the myenteric plexus was evaluated. There was a significant (P < 0.0001) diminution in the area, perimeter and volume-weighted mean volume of soma and nuclei of nitrergic myenteric neurones in the defunctionalized colon. In addition, there was a significant reduction in the neuronal density of the myenteric neurones, and increased distance between the ganglia. In addition, there was myenteric glial atrophy. Atrophy of colonic myenteric neurones was accompanied by significant reduction (P < 0.001) in the volume fraction of the muscularis externa, the prime targets of these neurones. The disturbances in the microecology of the colon may jeopardize the finely orchestrated functioning of the components of the Enteric nervous system (ENS) leading to colonic dysfunction. Our observations, by extrapolation, may explain the bowel dysmotility in humans after restoration of colonic continuity after colostomy.
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Affiliation(s)
- A Chaudhury
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi 110-029, India
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Allsopp AJ, Shariff A. Improving the selection of candidates for Royal Marine recruit training by the use of a combination of performance tests. J R Nav Med Serv 2004; 90:117-24. [PMID: 15745257] [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] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Candidates who wish to undertake Royal Marine recruit training, a physically strenuous course which now extends 32 weeks, must first of all successfully complete a Personal Qualities Assessment (PQA) and four psychomotor tests (Naval Recruiting Tests or RTs) before attending a three-day selection course at the Commando Training Centre, Lympstone, where their physical capabilities are tested to the full. The effectiveness of these procedures was untested until the Institute of Naval Medicine conducted a retrospective study during 1999-2000 from which the present study is taken. Data from 1232 recruits were examined to explore the relationship between the outcome of Commando training (pass or fail) with these various selection measures. Estimated aerobic power, time to complete the assault course and age were associated with outcome, as were PQA, RTs 1, 3, 4 and total RT score. A regression equation comprising aerobic fitness, assault course time, RT4 and age gave the best overall prediction of outcome (64%). It is suggested that this mathematical approach provides a scientifically valid and objective assessment tool for future selection strategies.
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Affiliation(s)
- A J Allsopp
- Environmental Medicine Unit, Institute of Naval Medicine
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Srinivas M, Degaonkar M, Chandrasekharam VVSS, Gupta DK, Hemal AK, Shariff A, Jagannathan NR. Potential of MRI and 31P MRS in the evaluation of experimental testicular trauma. Urology 2002; 59:969-72. [PMID: 12031396 DOI: 10.1016/s0090-4295(02)01616-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [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: 10/16/2022]
Abstract
OBJECTIVES To prognosticate and assess the metabolic status of germ cells of the testis after unilateral blunt testicular trauma using both magnetic resonance imaging (MRI) and magnetic resonance spectroscopy (MRS). MRI is a noninvasive technique suitable for evaluating testicular trauma, and MRS is useful in assessing the metabolic status of the testis. METHODS The right testis of 35 male prepubertal Wistar rats, aged 30 days, was explored through an inguinal incision. The rats were randomized into control (group 1, sham surgery, n = 10) and study (n = 25) groups. The study group received unilateral blunt testicular trauma to the right testis. T(1)- and T(2)-weighted proton MRI of the ipsilateral testis were taken 6 hours after sham surgery or injury, and the rats were stratified on the basis of the absence or presence of intratesticular hemorrhage on MRI into groups 2 (n = 14) and 3 (n = 11), respectively. At 60 days of age, the contralateral testis of each rat was evaluated by 31P MRS and histologic examination. Quantification of phosphomonoesters, phosphodiesters, phosphocreatine, and adenosine triphosphate (gamma, alpha, and beta) was done. RESULTS A statistically significant difference (P <0.05) in the phosphomonoester/adenosine triphosphate ratio, seminiferous tubular diameter, and Johnsen score of the contralateral testis was observed, indicating decreased testicular maturation of the contralateral testis in group 3 rats compared with groups 1 and 2. CONCLUSIONS MRI after testicular trauma helped to stratify the extent of injury as determined by the presence or absence of intratesticular hemorrhage with prognostic value; 31P MRS and histologic examination revealed that testicular trauma significantly affects the maturation of the contralateral testis.
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Affiliation(s)
- M Srinivas
- Department of Pediatric Surgery, All India Institute of Medical Sciences, New Delhi, India
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Benninger MS, Shariff A, Blazoff K. Symptom-directed selective endoscopy: long-term efficacy. Arch Otolaryngol Head Neck Surg 2001; 127:770-3. [PMID: 11448347] [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] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Abstract
BACKGROUND Synchronous primary neoplasms have been encountered in some patients with mucosal squamous cell carcinoma of the head and neck. Routine panendoscopy along with various radiological tests have been advocated to identify these potential tumors. In 1993, we originally described symptom-directed, selective endoscopy as an efficient and cost-effective means to evaluate patients to identify synchronous primary neoplasms. OBJECTIVE To review the ultimate success rate of symptom-directed, selective endoscopy in that initial cohort of patients and the success of the program longitudinally in clinical practice over the intervening 6 years. PATIENTS AND METHODS The status of the original 100 patients who participated in the selective endoscopy study were reviewed at least 6 months after the original procedure. A statistically significant random sample of 101 subsequent patients who had at least 6 months' follow-up or until their death were reviewed. RESULTS No additional primary, mucosal head and neck, esophageal, or pulmonary cancers were identified in the surviving original cohort of patients suggesting that the selective endoscopy identified all synchronous tumors. Sixteen metachronous primary cancers were identified between 12 and 70 months after the initial evaluation. Eight synchronous primary cancers were identified in the new cohort using symptom-directed evaluation, direct laryngopharyngoscopy, and chest x-ray films. No additional tumors were detected within 6 months. CONCLUSION Symptom-directed, selective endoscopy seems to be an effective alternative to routine panendoscopy in identifying synchronous primary cancers.
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Affiliation(s)
- M S Benninger
- Department of Otolarynology-Head and Neck Surgery, Henry Ford Hospital, 2799 W Grand Blvd, Detroit, MI 48202, USA.
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Choyce A, Avidan MS, Shariff A, Del Aguila M, Radcliffe JJ, Chan T. A comparison of the intubating and standard laryngeal mask airways for airway management by inexperienced personnel. Anaesthesia 2001; 56:357-60. [PMID: 11284824 DOI: 10.1046/j.1365-2044.2001.01708-3.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [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: 11/20/2022]
Abstract
Twenty-four inexperienced participants were timed inserting the intubating laryngeal mask airway and the laryngeal mask airway in 75 anaesthetised subjects. Adequacy of ventilation was assessed on a three-point scale. The pressure at which a leak first developed around the device's cuff was also measured. There was no significant difference in insertion time or the likelihood of achieving adequate ventilation between devices. However, the intubating laryngeal mask airway was better at providing adequate ventilation without audible leak (58/75 (77%) vs. 42/75 (56%); p = 0.009). The median (range [IQR]) pressure at which an audible leak developed was higher for the intubating laryngeal mask airway, 34.5 (14-40 [29-40]) cmH2O, than for the laryngeal mask airway, 27.5 (14-40 [22-33]) cmH2O (p < 0.001). The intubating laryngeal mask airway is worthy of further consideration as a tool for emergency airway management for inexperienced personnel.
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Affiliation(s)
- A Choyce
- Department of Anaesthesia, King's College Hospital, Denmark Hill, London SE5 9RS, UK.
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Abstract
Historically, fine-needle aspiration of the female breast has been accepted as a useful modality in the diagnosis of ductal as well as other types of breast carcinoma. However, cases of well differentiated small-cell duct carcinoma can be problematic. The differential diagnoses include fibrocystic disease, papillary neoplasia, fibroadenoma, and lobular carcinoma. Retrospectively, 16 cases of well differentiated small-cell duct carcinoma have been identified in the case files of Truman Medical Center/University of Missouri-Kansas City. Patient's ages ranged from 29-81 yr, with the mean being 56.2 yr. The overall cytologic features consisted predominantly of a hypercellular specimen with cohesive and rarely discohesive cells with no demonstrable nuclear atypia. For well differentiated small-cell duct carcinoma, the mean nuclear diameter was greater than that of a red cell (6-8 microns). For the well differentiated small-cell duct carcinoma group, the mean nuclear diameter was 9.86 microns; for fibrocystic disease, 12.86 microns; for papillomas, 8.28 microns; for fibroadenomas, 9.48 microns; and for lobular carcinoma, 11.88 microns. From our data, it appears that specific attention to the clinical presentation, cytologic pattern, and nuclear diameters are useful discriminators for well differentiated small-cell duct carcinoma.
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Affiliation(s)
- R M Fiorella
- Department of Pathology, Truman Medical Center, Kansas City, MO 64168, USA
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Abstract
Ponticulin, an F-actin binding transmembrane glycoprotein in Dictyostelium plasma membranes, was isolated by detergent extraction from cytoskeletons and purified to homogeneity. Ponticulin is an abundant membrane protein, averaging approximately 10(6) copies/cell, with an estimated surface density of approximately 300 per microns2. Ponticulin solubilized in octylglucoside exhibited hydrodynamic properties consistent with a ponticulin monomer in a spherical or slightly ellipsoidal detergent micelle with a total molecular mass of 56 +/- 6 kD. Purified ponticulin nucleated actin polymerization when reconstituted into Dictyostelium lipid vesicles, but not when a number of commercially available lipids and lipid mixtures were substituted for the endogenous lipid. The specific activity was consistent with that expected for a protein comprising 0.7 +/- 0.4%, by mass, of the plasma membrane protein. Ponticulin in octylglucoside micelles bound F-actin but did not nucleate actin assembly. Thus, ponticulin-mediated nucleation activity was sensitive to the lipid environment, a result frequently observed with transmembrane proteins. At most concentrations of Dictyostelium lipid, nucleation activity increased linearly with increasing amounts of ponticulin, suggesting that the nucleating species is a ponticulin monomer. Consistent with previous observations of lateral interactions between actin filaments and Dictyostelium plasma membranes, both ends of ponticulin-nucleated actin filaments appeared to be free for monomer assembly and disassembly. Our results indicate that ponticulin is a major membrane protein in Dictyostelium and that, in the proper lipid matrix, it is sufficient for lateral nucleation of actin assembly. To date, ponticulin is the only integral membrane protein known to directly nucleate actin polymerization.
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Affiliation(s)
- C P Chia
- Worcester Foundation for Experimental Biology, Shrewsbury, Massachusetts 01545
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31
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Abstract
Diacylglycerols, which are generated during phospholipase-catalyzed hydrolysis of phospholipids, stimulated actin polymerization in the presence of highly purified plasma membranes from the cellular slime mold Dictyostelium discoideum. The increased rate of actin polymerization apparently resulted from de novo formation of actin nucleation sites rather than uncapping of existing filament ends, because the membranes lacked detectable endogenous actin. The increased actin nucleation was mediated by a peripheral membrane component other than protein kinase C, the classical target of diacylglycerol action. These results indicate that diacylglycerols increase actin nucleation at plasma membranes and suggest a mechanism whereby signal transduction pathways may control cytoskeletal assembly.
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Affiliation(s)
- A Shariff
- Cell Biology Group, Worcester Foundation for Experimental Biology, Shresbury, MA 01545
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Wuestehube LJ, Speicher DW, Shariff A, Luna EJ. F-actin affinity chromatography of detergent-solubilized plasma membranes: purification and initial characterization of ponticulin from Dictyostelium discoideum. Methods Enzymol 1991; 196:47-65. [PMID: 2034136 DOI: 10.1016/0076-6879(91)96007-e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Shariff A, Luna EJ. Dictyostelium discoideum plasma membranes contain an actin-nucleating activity that requires ponticulin, an integral membrane glycoprotein. J Biophys Biochem Cytol 1990; 110:681-92. [PMID: 2307703 PMCID: PMC2116041 DOI: 10.1083/jcb.110.3.681] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
In previous equilibrium binding studies, Dictyostelium discoideum plasma membranes have been shown to bind actin and to recruit actin into filaments at the membrane surface. However, little is known about the kinetic pathway(s) through which actin assembles at these, or other, membranes. We have used actin fluorescently labeled with N-(1-pyrenyl)iodoacetamide to examine the kinetics of actin assembly in the presence of D. discoideum plasma membranes. We find that these membranes increase the rate of actin polymerization. The rate of membrane-mediated actin polymerization is linearly dependent on membrane protein concentrations up to 20 micrograms/ml. Nucleation (the association of activated actin monomers into oligomers) appears to be the primary step of polymerization that is accelerated. A sole effect on the initial salt-induced actin conformational change (activation) is ruled out because membranes accelerate the polymerization of pre-activated actin as well as actin activated in the presence of membranes. Elongation of preexisting filaments also is not the major step of polymerization facilitated by membranes since membranes stripped of all peripheral components, including actin, increase the rate of actin assembly to about the same extent as do membranes containing small amounts of endogenous actin. Acceleration of the nucleation step by membranes also is supported by an analysis of the dependence of polymerization lag time on actin concentration. The barbed ends of membrane-induced actin nuclei are not obstructed by the membranes because the barbed end blocking agent, cytochalasin D, reduces the rate of membrane-mediated actin nucleation. Similarly, the pointed ends of the nuclei are not blocked by membranes since the depolymerization rate of gelsolin-capped actin is unchanged in the presence of membranes. These results are consistent with previous observations of lateral interactions between membranes and actin filaments. These results also are consistent with two predictions from a model based on equilibrium binding studies; i.e., that plasma membranes should nucleate actin assembly and that membrane-bound actin nuclei should have both ends free (Schwartz, M. A., and E. J. Luna. 1988. J. Cell Biol. 107:201-209). Integral membrane proteins mediate the actin nucleation activity because activity is eliminated by heat denaturation, treatment with reducing agents, or proteolysis of membranes. Activity also is abolished by solubilization with octylglucoside but is reconstituted upon removal or dilution of the detergent. Ponticulin, the major actin-binding protein in plasma membranes, appears to be necessary for nucleation activity since activity is not reconstituted from detergent extracts depleted of ponticulin.
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Affiliation(s)
- A Shariff
- Worcester Foundation for Experimental Biology, Shrewsbury, Massachusetts 01545
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Luna EJ, Wuestehube LJ, Chia CP, Shariff A, Hitt AL, Ingalls HM. Ponticulin, a developmentally-regulated plasma membrane glycoprotein, mediates actin binding and nucleation. Dev Genet 1990; 11:354-61. [PMID: 2096014 DOI: 10.1002/dvg.1020110506] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Ponticulin is a 17,000-dalton transmembrane glycoprotein that is involved in the binding and nucleation of actin filaments by Dictyostelium discoideum plasma membranes. The major actin-binding protein isolated from these membranes by F-actin affinity chromatography, ponticulin also binds F-actin on blot overlays. The actin-binding activity of ponticulin in vitro is identical to that observed for purified plasma membranes: it resists extraction with 0.1 N NaOH, is sensitive to high salt concentrations, and is destroyed by heat, proteolysis, and thiol reduction and alkylation. A cytoplasmic domain of ponticulin mediates binding to actin because univalent antibody fragments directed against the cytoplasmic surface of this protein inhibit 96% of the actin-membrane binding in sedimentation assays. Antibody specific for ponticulin removes both ponticulin and the ability to reconstitute actin nucleation activity from detergent extracts of solubilized plasma membranes. Levels of plasma membrane ponticulin increase 2- to 3-fold during aggregation streaming, when cells adhere to each other and are highly motile. Although present throughout the plasma membrane, ponticulin is preferentially localized to some actin-rich membrane structures, including sites of cell-cell adhesion and arched regions of the plasma membrane reminiscent of the early stages of pseudopod formation. Ponticulin also is present but not obviously enriched at phagocytic cups of log-phase amebae. These results indicate that ponticulin may function in vivo to attach and nucleate actin filaments at the cytoplasmic surface of the plasma membrane. A 17,000-dalton analogue of ponticulin has been identified in human polymorphonuclear leukocyte plasma membranes by immunoblotting and immunofluorescence microscopy.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- E J Luna
- Cell Biology Group, Worcester Foundation for Experimental Biology, Shrewsbury, MA 01545
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Schmidt K, Baer HP, Shariff A, Ayer WA, Browne L. Binding of [14,15-3H]14,15-dihydroforskolin to rat liver membranes: comparison with the stimulatory effect of forskolin on adenylate cyclase. Can J Physiol Pharmacol 1987; 65:803-9. [PMID: 3621043 DOI: 10.1139/y87-129] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The binding of [14,15-3H]14,15-dihydroforskolin ([3H]DHF) to rat liver membranes has been further characterized and was compared with the stimulatory effect of forskolin on adenylate cyclase. The binding equilibrium dissociation constant (KD) for 14,15-dihydroforskolin obtained in inhibition experiments was 0.6 microM, with a maximal binding capacity (Bmax) of 114 pmol/mg protein. A similar KD value (0.5 microM) was derived from kinetics studies that revealed very rapid association and dissociation reactions. For structure-activity relationship studies several forskolin derivatives were synthesized and tested for their ability to inhibit [3H]DHF binding and increase adenylate cyclase activity. Among the tested compounds, forskolin itself was the most potent agonist (K1 = 0.2 microM). Further modification of the molecule in position 7 and (or) 1 decreased or abolished its agonist properties in both adenylate cyclase and binding studies. [3H]DHF binding was not affected by several nucleotides, carbohydrates, lectins, and hormone receptor agonists including isoproterenol, glucagon, and adenosine, but the steroids 17-beta-estradiol, progesterone, and testosterone showed slight inhibitory effects at unphysiologically high concentrations. [3H]DHF binding and forskolin-stimulated adenylate cyclase were sensitive to heat and N-ethylmaleimide treatment. Forskolin protected adenylate cyclase against inactivation by heat but not by N-ethylmaleimide. Preincubation of the membrane with trypsin decreased [3H]DHF binding. The results presented in this study demonstrate that the binding sites identified with [3H]DHF have a high specificity for forskolin and provide evidence that these binding sites are involved in the stimulation of adenylate cyclase by forskolin.
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Sawyer JF, Shariff A, McLean S. Structure and stereochemistry of (±)-demethoxycarbonyl-3α- and -3β-nauclechine. Acta Crystallogr C 1985. [DOI: 10.1107/s0108270185009556] [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: 11/10/2022] Open
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Shariff A, Mouli AS. Dimensions of population policy in India: the psycho-social implications. Indian J Behav 1978; 2:17-25. [PMID: 12268333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
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