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Agrawal V, Saxena A, Sethi A, Acharya H, Sharma D. Thoracoscopic pericardiotomy for management of purulent pneumococcal pericarditis in a child. Asian J Endosc Surg 2012; 5:145-8. [PMID: 22823173 DOI: 10.1111/j.1758-5910.2011.00129.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Purulent pericarditis is an extremely rare complication of pneumococcal pneumonia in children that may result in to cardiac tamponade. While image-guided pericardiocentesis is the treatment of choice for such a condition, it may fail in the presence of thick pus; loculations and thoracoscopic pericardiotomy are useful procedures for such situations. Herein, we report such a case involving a 6-year-old boy who presented with purulent pneumococcal pericarditis that was managed with thoracoscopic pericardiotomy and who recovered well. Thoracoscopic pericardiotomy is a safe procedure that allows effective drainage under vision, pericardial biopsy for diagnosis, and a simultaneous opportunity to perform thoracoscopic pleural drainage.
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Singh V, Agrawal V, Santhiago MR, Wilson SE. Stromal fibroblast-bone marrow-derived cell interactions: implications for myofibroblast development in the cornea. Exp Eye Res 2012; 98:1-8. [PMID: 22465408 DOI: 10.1016/j.exer.2012.03.006] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2012] [Revised: 02/14/2012] [Accepted: 03/11/2012] [Indexed: 02/06/2023]
Abstract
The purpose of this study was to test the hypothesis that mouse corneal stromal fibroblast and bone marrow-derived cell interactions augment corneal myofibroblast generation and, if so, to study whether such interactions are mediated by paracrine or juxtacrine mechanisms. Mouse bone marrow-derived cells and mouse corneal stromal fibroblasts were obtained from both mice with green fluorescent protein (GFP) expressed in all cells and normal GFP- BL6 control mice. To study the interactions of the different cell types, GFP+ cells of one type were co-cultured with GFP- cells of the other type in Primaria plates (to monitor juxtacrine signaling) or Transwell System plates (to monitor paracrine effects mediated by soluble mediators). Both cell types were cultured at a cell density of 1 × 10(5) cells per ml. The percentage of alpha smooth muscle actin+ myofibroblasts was significantly higher (ANOVA, p<0.001) when bone marrow-derived cells and mouse corneal stromal fibroblasts were co-cultured compared to when bone marrow-derived cells and mouse corneal stromal fibroblasts were cultured alone (control). The in vitro studies using GFP+ corneal fibroblasts or GFP+ bone marrow-derived cells demonstrated conclusively that both cells types could transform into myofibroblasts. However, the percentage of alpha smooth muscle actinassds+ myofibroblasts generated from either cell type precursor was higher when both cells were co-cultured together (juxtacrine) as compared to when bone marrow-derived cells and mouse corneal stromal fibroblasts were co-culture in different compartments of Transwell System (paracrine). Thus, more alpha smooth muscle actin+ GFP+ myofibroblasts were generated from GFP+ corneal stromal fibroblasts when GFP- bone marrow-derived cells were present and more alpha smooth muscle actin+ GFP+ myofibroblasts were generated from GFP+ bone marrow-derived cells when GFP- corneal stromal fibroblasts were present. Polyclonal anti-human latency associated peptide (LAP) (transforming growth factor-β1) neutralizing antibody (a-LAP) and/or transforming growth factor-β type I receptor kinase inhibitor (LY-364947) inhibited the generation of alpha smooth muscle actin+ myofibroblasts from either precursor cell in Transwell System co-culture experiments. These data suggest that TGFβ is a paracrine modulator that regulates the generation of myofibroblasts from either corneal fibroblasts or bone marrow-derived cell precursors.
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Sharma RK, Kaul A, Agrawal V, Jaisuresh K. Primary antiphospholipid syndrome presenting as thrombotic microangiopathy: Successful treatment with steroids, plasma exchange and anticoagulants. Indian J Nephrol 2011; 21:280-2. [PMID: 22022091 PMCID: PMC3193674 DOI: 10.4103/0971-4065.83745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Antiphospholipid syndrome (APS) often presents as a multisystem disorder characterized by recurrent arterial and venous thrombosis and pregnancy loss. We present a 46-year-old female who was admitted with oliguric acute renal failure. APS was suspected due to prolongation of activated partial thromboplastin time and history of miscarriages. Investigations for secondary causes were normal. Renal biopsy findings revealed thrombotic microangiopathy. A complete recovery of renal function was attained with a combination of plasma exchange and pulse methylprednisolone followed by oral steroids and warfarin. The case is presented for its rarity and therapeutic implications.
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Daly KA, Liu S, Agrawal V, Brown BN, Johnson SA, Medberry CJ, Badylak SF. Damage associated molecular patterns within xenogeneic biologic scaffolds and their effects on host remodeling. Biomaterials 2011; 33:91-101. [PMID: 21967802 DOI: 10.1016/j.biomaterials.2011.09.040] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2011] [Accepted: 09/15/2011] [Indexed: 12/19/2022]
Abstract
The immune response is an important determinant of the downstream remodeling of xenogeneic biologic scaffolds in vivo. Pro-inflammatory responses have been correlated with encapsulation and a foreign body reaction, while anti-inflammatory reactions are associated with constructive remodeling. However, the bioactive and bioinductive molecules within the extracellular matrix (ECM) that induce this polarization are unclear, although it is likely that cellular remnants such as damage associated molecular patterns (DAMPs) retained within the scaffold may play a role. The present study investigated the immunomodulatory effects of common ECM scaffolds. Results showed that tissue source, decellularization method and chemical crosslinking modifications affect the presence of the well characterized DAMP - HMGB1. In addition, these factors were correlated with differences in cell proliferation, death, secretion of the chemokines CCL2 and CCL4, and up regulation of the pro-inflammatory signaling receptor toll-like receptor 4 (TLR4). Inhibition of HMGB1 with glycyrrhizin increased the pro-inflammatory response, increasing cell death and up regulating chemokine and TLR4 mRNA expression. The present study suggests the importance of HMGB1 and other DAMPS as bioinductive molecules within the ECM scaffold. Identification and evaluation of other ECM bioactive molecules will be an area of future interest for new biomaterial development.
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Singh V, Santhiago MR, Barbosa FL, Agrawal V, Singh N, Ambati BK, Wilson SE. Effect of TGFβ and PDGF-B blockade on corneal myofibroblast development in mice. Exp Eye Res 2011; 93:810-7. [PMID: 21978952 DOI: 10.1016/j.exer.2011.09.012] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 09/11/2011] [Accepted: 09/22/2011] [Indexed: 11/18/2022]
Abstract
The purpose of this study was to investigate the role of transforming growth factor beta (TGFβ) and/or platelet-derived growth factor-B (PDGF-B) blockade on the differentiation of vimentin and alpha-smooth muscle actin (αSMA)-expressing myofibroblasts associated with haze in mice. Mouse corneas had haze-generating irregular PTK (phototherapeutic keratectomy) and topical treatment with the vectors. Six study groups of PTK treated corneas, with four corneas per group in each experiment, were Group 1) treated with TGFβ-KDEL vector interfering with TGFβ signaling through anomalous sorting of cytokine bound to the expressed altered receptor; Group 2) treated with PDGF-B-KDEL vector interfering with PDGF signaling through anomalous sorting of cytokine bound to the expressed altered receptor; Group 3) treated with both TGFβ-KDEL vector and PDGF-B-KDEL vector to interfere with signaling of both cytokines; Group 4) empty pGFPC1 vector; Group 5) empty pCMV vector; and Group 6) no vector treatment control. At one month after surgery, the corneas were analyzed by immunocytochemistry (IHC) for central stromal cells expressing myofibroblast markers vimentin and αSMA. The stroma of corneas treated with the TGFβ-KDEL vector alone (p < 0.05) or both the TGFβ-KDEL and PDGF-B-KDEL vectors (P < 0.05) had significantly lower density of vimentin-positive cells compared to the corresponding control group. The central stroma of corneas treated with the TGFβ-KDEL vector (p < 0.05) or the PDGF-B-KDEL vector (p < 0.05) had lower density of αSMA-positive cells compared to the corresponding control group. The density of αSMA-positive stromal cells was also significantly lower (p < 0.05) when both the TGFβ-KDEL and PDGF-B-KDEL and vectors were applied together compared to the corresponding control groups. This study provides in situ evidence that TGFβ and PDGF-B have important roles in modulating myofibroblast generation in the mouse cornea after haze-associated injury.
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Santhiago MR, Singh V, Barbosa FL, Agrawal V, Wilson SE. Monocyte development inhibitor PRM-151 decreases corneal myofibroblast generation in rabbits. Exp Eye Res 2011; 93:786-9. [PMID: 21933674 DOI: 10.1016/j.exer.2011.08.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Revised: 08/23/2011] [Accepted: 08/25/2011] [Indexed: 11/17/2022]
Abstract
This study investigated whether PRM-151 (Promedior, Inc., Malvern, PA), a recombinant form of human pentraxin-2 (PTX-2, also referred to as serum amyloid P, hSAP), that inhibits differentiation of circulating monocytes into fibrocytes and profibrotic macrophages, could modulate generation of myofibroblasts after opacity-producing corneal injury in rabbits, and, therefore, have potential to reduce or prevent haze after PRK. Nine diopter PRK for myopia was performed with the VISX S4 IR laser. Four groups of 6 animals were treated in masked fashion: Group 1: 30 μl of topical PRM-151 (20 mg/ml) 6 times a day for 5 days; Group 2: 30 μl topical vehicle 6 times a day for 5 days; Group 3: 200 μl sub-conjunctival PRM-151 (total injection of 4 mg) immediately after surgery and every other day until day 8; Group 4: 200 μl sub-conjunctival injections of vehicle according to the same schedule as group 3. At one month after PRK, the animals were euthanized and immunohistochemistry was performed for the myofibroblast marker α-smooth muscle actin (SMA). The density of SMA+ cells/400× field in the central stroma was determined in each cornea. Myofibroblast density at one month after surgery was significantly lower (p = 0.006) after sub-conjunctival PRM-151 treatment (5.8 ± 2.8 cells/400× stromal field) compared to sub-conjunctival vehicle treatment (15.3 ± 2.9 cells/400× stromal field). There was no significant (p = 0.27) decrease in stromal myofibroblasts triggered by topical PRM-151 treatment (11.8 ± 6.6 cells/400× stromal field) compared to the topical vehicle treatment (14.2.8 ± 6.2 cells/400× stromal field). PRM-151 inhibits myofibroblast generation when administered by sub-conjunctival injection, but not when administered topically, after opacity-producing corneal injury. This study provides additional confirmation that bone marrow-derived cells contribute to corneal myofibroblast generation.
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Singh NK, Godara M, Agrawal V. Rupture of non-coronary sinus of valsalva with infective endocarditis of naive tricuspid valve presenting with recurrent ill-sustained ventricular tachycardia. THE JOURNAL OF THE ASSOCIATION OF PHYSICIANS OF INDIA 2011; 59:184-186. [PMID: 21751635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Infective endocarditis affecting the tricupid valve due to rupture of non-coronary sinus of Valsalva is distinctly rare. We are reporting such a rare case, presenting with recurrent ill sustained ventricular tachycardia.
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Prasad N, Gupta A, Sharma RK, Gopalakrishnan S, Agrawal V, Jain M. Cytomegalovirus and Leishmania donovani coinfection in a renal allograft recipient. Indian J Nephrol 2011; 21:128-31. [PMID: 21769179 PMCID: PMC3132335 DOI: 10.4103/0971-4065.78064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Infection is a leading cause of death in renal allograft recipients. Apart from the immunosuppressive drugs, immunomodulatory viral infections also predispose the recipient to many opportunistic infections. Kala-azar in renal allograft recipients is infrequently reported even in endemic areas. In majority of cases, there was delay in diagnosis and treatment. We report a case of renal allograft recipient, where we faced a diagnostic dilemma because of coinfection of cytomegalovirus and visceral leishmaniasis (kala-azar). Kala-azar was successfully treated with amphotericin B. Kala-azar should always be kept as differential diagnosis in patients with pyrexia and cytopenia, even in the absence of splenomegaly in patients residing in an endemic zone.
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Agrawal V, Gupta V, Ramteke S, Trivedi P. Preparation and evaluation of tubular micelles of pluronic lecithin organogel for transdermal delivery of sumatriptan. AAPS PharmSciTech 2010; 11:1718-25. [PMID: 21128126 DOI: 10.1208/s12249-010-9540-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2009] [Accepted: 11/09/2010] [Indexed: 11/30/2022] Open
Abstract
The present work focuses on the preparation and evaluation of lecithin organogel system of thermoreversible polymer pluronic F127, which would enhance the stability and absorption of sumatriptan succinate across the skin. Formulations were developed with and without co-surfactant (pluronic F127). The prepared organogels were evaluated for its appearance, organoleptic characteristics, and feel upon application, homogeneity, occlusivenes, washability, pH, viscosity, spreadability, gel transition temperature of formulations. The formulations were also evaluated for drug content, in vitro drug diffusion properties and skin irritation testing. In vivo evaluation of formulations was carried out by hot plate and writhing test method, and finally the optimized formulation was subjected to stability studies. The developed formulations were easily washable, smooth in feel, and showed no clogging which indicate superior texture of system. Formulation, containing pluronic showed greater spreadability and higher drug diffusion rate as compared to pluronic free organogel. Drug content of organogel formulations was in the range of 94-97%. The pH of the formulations was 6.48 ± 0.5 and 6.98 ± 0.1, reflecting no risk of skin irritation. Pluronic not only enhances the stability of organogel by increasing the viscosity (from 6,541 ± 234.76 to 7,826 ± 155.65 poise) but also increases the release of drug from 67.39 ± 1.53% to 74.21 ± 1.7%. The sumatriptan exhibits higher and long lasting antinociceptive effect as indicated by the persistent increase in reaction time in hot plate and inhibited abdominal contraction in acetic acid-induced writhing test (p < 0.05). The prepared optimized formulation was found to be stable without any significant changes at room temperature.
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Sarma PK, Chowhan AK, Agrawal V, Agarwal V. Fine needle aspiration cytology in HIV-related lymphadenopathy: experience at a single centre in north India. Cytopathology 2010; 21:234-9. [PMID: 19843144 DOI: 10.1111/j.1365-2303.2009.00712.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Fine needle aspiration (FNA) is emerging as a rapid and minimally invasive tool in evaluating lymphadenopathy associated with human immunodeficiency virus (HIV). We evaluated the role of FNA in differentiating various causes of lymphadenopathy in patients with HIV and correlated the cytological diagnosis with CD4 counts. METHODS Seventy-nine HIV-positive patients (median age 35 years, 68 male) underwent ultrasound-guided (n = 16) and unguided (n = 63) FNA from 1999 to 2006. Smears were stained with May-Grünwald-Giemsa, haematoxylin & eosin and Papanicolaou stains. Ziehl-Neelsen (ZN) staining for acid-fast bacilli (AFB) was performed in all cases. Staining for fungus was performed whenever required. RESULTS The aspirates were adequate in 75 cases (95%). Non-specific reactive hyperplasia was the most common FNA diagnosis (39, 52%) followed by granulomatous necrotizing lymphadenitis (15, 20%), necrotizing lymphadenitis (13, 17.3%) and granulomatous lymphadenitis (4, 5.2%). Fungal infection and non-Hodgkin lymphoma (NHL) were seen in two patients each. ZN staining was positive for AFB in 25 (33.3%) cases. One of these was morphologically interpreted as reactive hyperplasia, 12 as necrotizing lymphadenitis and 12 as granulomatous necrotizing lymphadenitis. Both patients with NHL had CD4 counts below 100/dl. Necrotizing lymphadenitis and granulomatous lymphadenitis were significantly associated with CD4 counts below and above 200/dl, respectively (P = 0.0002). CONCLUSIONS FNA is an important tool for assessing the cause of lymphadenopathy in HIV patients. Necrotizing inflammation is more often seen in patients with low CD4 counts. AFB are commonly found in necrotic aspirates with or without granulomas. However, a stain for AFB should be performed in all aspirates from HIV-related lymphadenopathy including reactive hyperplasia.
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Agrawal V, Vishnoi S, Zaidi MGH, Alam S, Rai AK. Synthesis and Properties of [60] Fullerene-Polymethyl Methacrylate Conjugates in Supercritical Carbon Dioxide. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2010. [DOI: 10.1080/10236661003758913] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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62
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Malhotra KP, Agrawal V, Prasad N. Myelomatous pleural effusion: a diagnostic challenge. Indian J Cancer 2010; 47:351-2. [PMID: 20587921 DOI: 10.4103/0019-509x.64713] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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63
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Agrawal V, Rai B, Fellows J, McCullough PA. In-hospital outcomes with thrombolytic therapy in patients with renal dysfunction presenting with acute ischaemic stroke. Nephrol Dial Transplant 2010; 25:1150-1157. [DOI: 10.1093/ndt/gfp619] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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64
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Caneba G, Dutta C, Agrawal V, Rao M. Novel Ultrasonic Dispersion of Carbon Nanotubes. ACTA ACUST UNITED AC 2010. [DOI: 10.4236/jmmce.2010.93015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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65
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Agrawal V, Goel A, Krishnani N, Pandey R, Agrawal S, Kapoor VK. p53, carcinoembryonic antigen and carbohydrate antigen 19.9 expression in gall bladder cancer, precursor epithelial lesions and xanthogranulomatous cholecystitis. J Postgrad Med 2010; 56:262-6. [DOI: 10.4103/0022-3859.70933] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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66
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Agrawal V, Agrawal S. O19 Titrated misoprostol solution for induction of labour. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)60391-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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67
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Mishra A, Agrawal V, Krishnani N, Mishra SK. Prevalence of RET/PTC expression in papillary thyroid carcinoma and its correlation with prognostic factors in a north Indian population. J Postgrad Med 2009; 55:171-5. [DOI: 10.4103/0022-3859.57390] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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68
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Agrawal V, Ghosh AK, Barnes MA, McCullough PA. Perception of Indications for Nephrology Referral among Internal Medicine Residents: A National Online Survey. Clin J Am Soc Nephrol 2008. [DOI: 10.2215/cjn.2003510708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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69
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Agrawal V, Joshi MK, Jain BK, Mohanty D, Gupta A. Tuberculotic osteomyelitis of rib - a surgical entity. Interact Cardiovasc Thorac Surg 2008; 7:1028-30. [DOI: 10.1510/icvts.2008.179127] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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70
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Agrawal V, Agarwal M, Joshi SR, Ghosh AK. Hyponatremia and hypernatremia: disorders of water balance. THE JOURNAL OF THE ASSOCIATION OF PHYSICIANS OF INDIA 2008; 56:956-964. [PMID: 19322975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Total body water and tonicity is tightly regulated by renal action of antidiuretic hormone (ADH), reninangiotensin-aldosterone system, norepinephrine and by the thirst mechanism. Abnormalities in water balance are manifested as sodium disturbances--hyponatremia and hypernatremia. Hyponatremia ([Na+ < 136 meq/ l]) is a common abnormality in hospitalized patients and is associated with increased morbidity and mortality. A common cause of hyponatremia is impaired renal water excretion either due to low extracellular fluid volume or inappropriate secretion of ADH. Clinical assessment of total body water and urine studies help in determining cause and guiding treatment of hyponatremia. Acute and severe hyponatremia cause neurological symptoms necessitating rapid correction with hypertonic saline. Careful administration and monitoring of serum [Na+] is required to avoid overcorrection and complication of osmotic demyelination. Vasopressin receptor antagonists are being evaluated in management of euvolemic and hypervolemic hyponatremia. Hypematremia ([Na+] > 145 meq/l) is caused by primary water deficit (with or without Na+ loss) and commonly occurs from inadequate access to water or impaired thirst mechanism. Assessment of the clinical circumstances and urine studies help determine the etiology, while management of hypernatremia involves fluid resuscitation and avoiding neurological complications from hypernatremia or its correction. Frequent monitoring of [Na+] is of paramount importance in the treatment of sodium disorders that overcomes the limitations of prediction equations.
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Agrawal V, Agell I. Does prescribing practice of clozapine affect length of stay in psychiatric in-patient units? Eur Psychiatry 2008. [DOI: 10.1016/j.eurpsy.2008.01.918] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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72
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Sall-Dullat S, Agrawal V, Agell I. Single Point of access and mental health act. Eur Psychiatry 2008. [DOI: 10.1016/j.eurpsy.2008.01.1152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Hingorani M, White C, Agrawal V, Vidal L, Melcher A, Harrington K. Combining Radiation and Cancer Gene Therapy: A Potential Marriage of Physical and Biological Targeting? Curr Cancer Drug Targets 2007; 7:389-409. [DOI: 10.2174/156800907780809787] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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74
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Acosta EP, Brundage RC, King JR, Sánchez PJ, Sood S, Agrawal V, Homans J, Jacobs RF, Lang D, Romero JR, Griffin J, Cloud G, Whitley R, Kimberlin DW. Ganciclovir Population Pharmacokinetics in Neonates Following Intravenous Administration of Ganciclovir and Oral Administration of a Liquid Valganciclovir Formulation. Clin Pharmacol Ther 2007; 81:867-72. [PMID: 17392728 DOI: 10.1038/sj.clpt.6100150] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Cytomegalovirus (CMV) is the most common viral congenital infection, producing both sensorineural hearing loss and mental retardation. Our objective was to assess the population pharmacokinetics of a research-grade oral valganciclovir solution in neonates with symptomatic congenital CMV disease. Twenty-four neonates received 6 weeks of antiviral therapy. Ganciclovir and valganciclovir were measured by liquid chromatography/tandem mass spectroscopy. NONMEM version VI beta was used for population analyses. All profiles were consistent with a one-compartment model. Postnatal age, body surface area, and gender did not improve the model fit after body weight was taken into account. The typical value of clearance (l/h), distribution volume (l), and bioavailability of ganciclovir were 0.146 x body weight (WT)(1.68), 1.15 x WT, and 53.6%, respectively. Although these results cannot be extrapolated to extemporaneously compounded valganciclovir preparations, they provide the foundation on which a commercial-grade valganciclovir oral solution may be a viable option for administration to neonates.
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Agrawal V, Ludwig N, Agrawal A, Bulsara KR. Intraosseous intracranial meningioma. AJNR Am J Neuroradiol 2007; 28:314-5. [PMID: 17297003 PMCID: PMC7977404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Primary intraosseous lytic meningiomas are rare tumors, with only 16 cases described in the literature. We present a case in which CT and MR imaging with contrast agent helped diagnose preoperatively an enlarging skull mass as a primary intraosseous lytic meningioma in a 70-year-old woman. Radiographic findings revealed a lytic mass centered on the coronal suture line that separated and thinned both the outer and inner tables of the frontal bone.
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