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LETTER TO EDITOR
Year : 2014  |  Volume : 24  |  Issue : 3  |  Page : 196-197
 

Apparent steroid resistance associated with prednisolone suspension


Division of Pediatric Nephrology, Dept of Pediatrics, Aditya Birla Memorial Hospital, Pune, Maharashtra, India

Date of Web Publication6-May-2014

Correspondence Address:
K P Sathe
D-602, "Laurel", 'Greens Society', opposite Pudumjee Paper Mills, Aditya Birla Hospital Marg, Thergaon, Chinchwad, Pune - 411033
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0971-4065.132025

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How to cite this article:
Sathe K P. Apparent steroid resistance associated with prednisolone suspension. Indian J Nephrol 2014;24:196-7

How to cite this URL:
Sathe K P. Apparent steroid resistance associated with prednisolone suspension. Indian J Nephrol [serial online] 2014 [cited 2020 Feb 18];24:196-7. Available from: http://www.indianjnephrol.org/text.asp?2014/24/3/196/132025


Sir,

An 18-month-old female child born of non-consanguineous parentage presented with mild periorbital puffiness but no hematuria, hypertension, skin rashes, joint swellings or organomegaly. Initial investigations were hemoglobin 13.8 g/dl, total leucocyte count 10.5 × 10 3 /μl, platelets 6.19 × 10 3 /μl. Serum albumin 1.9 g/dl, serum cholesterol 303 mg/dl, urine albumin 4+, spot urine protein creatinine ratio 13, serum creatinine 0.2 mg/dl. She was started on daily oral prednisolone suspension containing prednisolone sodium phosphate (5 mg/5 ml) in the dose of 2 mg/kg/day for a period of 4 weeks. She was compliant with the steroid therapy. Daily urine dipsticks showed persistent 2+ albuminuria. At the end of 4 weeks, she continued to have 2+ to 3+ albuminuria with urine protein creatinine ratio 9.16, serum albumin 2.6 g/dl and serum cholesterol 418 mg/dl. There was no intercurrent infection. Antinuclear antibody was negative and complements C3 142 mg/dl. Renal biopsy was being considered. Meanwhile, the oral prednisolone suspension was converted to equivalent dosage of oral prednisolone tablet. The tablet was crushed and administered orally for further period of 2 weeks in the daily dose of 2 mg/kg/day. The patient responded and had a sustained remission even while on alternate day steroid therapy which was gradually tapered.

Oral prednisolone suspension containing prednisolone sodium phosphate is routinely prescribed in infants with nephrotic syndrome for the ease of administration. However, there may be danger of under dosing with prednisolone suspension due to particle size related sedimentation and pH related instability. [1] This phenomenon is mentioned in the drug patents, product monograms and also in few case reports comparing dose uniformity of various steroid formulations in ophthalmic solutions. [1],[2],[3] The uniform redispersion of the active drug in the suspension may not be always guaranteed by manual shaking of the suspension just prior to use as seen in our case. This may result in lower bioavailability of the actual drug, incorrect dosing, continued proteinuria and false impression of steroid resistance requiring unnecessary renal biopsies and alternative immunosuppressive therapy. It is believed, that although there are many similar observations while managing pediatric nephrotic syndrome, these are not reported. This fact must be remembered before labeling any infant being treated with steroid suspension as steroid resistant. Clinical trials comparing different oral prednisolone salt suspensions (e.g., prednisolone sodium phosphate and prednisolone acetate) and ensuring finer particle size, better homogeneity, increased bioavailability of the drug and clinical response may be helpful in this regards. [3]

In conclusion, we need to be aware of such occasional apparent steroid resistance associated with prednisolone suspension while treating infantile nephrotic syndrome.


  Acknowledgment Top


Dr. Uma Ali, Bai Jerbai Wadia Hospital for Children, Mumbai.

 
  References Top

1.Diestelhorst M, Kwon KA, Süverkrup R. Dose uniformity of ophthalmic suspensions. J Cataract Refract Surg 1998;24:672-7.  Back to cited text no. 1
    
2.Kwon KA, Diestelhorst M, Süverkrüp R. Dosage problems in suspension eyedrops. Klin Monbl Augenheilkd 1996;209:144-9.  Back to cited text no. 2
    
3.Asotra S, Gao S, Yacobi A. Oral suspension of prednisolone acetate. Google Patents. US Patent 2010;7,799;331.  Back to cited text no. 3
    




 

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