Evidence map›Paper›PMID 29546461›Full record

ArticlePharmaceutical research2018

Structural Stability of Recombinant Human Growth Hormone (r-hGH) as a Function of Polymer Surface Properties.

Vaishnavi Rohitkumar Shah, Pardeep K Gupta

Abstract read
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In one paragraph

Article in Pharmaceutical research, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

Vaishnavi Rohitkumar ShahUniversity of the Sciences in Philadelphia, Philadelphia, Pennsylvania, USA. vrshah1987@gmail.com.
Pardeep K GuptaUniversity of the Sciences in Philadelphia, Philadelphia, Pennsylvania, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeDespite the fact that r-hGH was first approved for use by FDA in 1995 and the conventional dosage form in the market has a limitation of daily subcutaneous injections, there remains a lack of sustained delivery system in the market. Nutropin depot, a long-acting dosage form of r-hGH was approved for marketing by FDA in 1999, however, it was discontinued in 2004. Since then, unabating efforts have been made to develop biodegradable polymer based formulations for r-hGH delivery. However, grey area is the comprehension of structural stability of r-hGH at an interface with the polymer and it is of utmost important to attain safe and efficacious sustained delivery system. The purpose of this study was to evaluate the changes in structure of r-hGH upon adsorption at biodegradable PLGA nanoparticles of different hydrophobicity as a function of pH.

methodsDLS, fluorescence spectroscopy, and CD were collectively employed to evaluate structural changes in r-hGH.

resultsThe studies revealed that r-hGH is most stable with low to high hydrophobicity PLGA grades under pH 7.2 followed by 5.3.

conclusionOverall, the nature and magnitude of structural changes observed has a strong dependence on the pH and differences and degree of hydrophobicity of PLGA.

Indexed as

Circular DichroismDrug CompoundingDrug StabilityDynamic Light ScatteringHuman Growth HormoneNanoparticlesPolylactic Acid-Polyglycolic Acid CopolymerProtein Structure, TertiaryRecombinant ProteinsSpectrometry, FluorescenceSurface PropertiesHuman Growth HormonePolylactic Acid-Polyglycolic Acid CopolymerRecombinant Proteinscircular dichroism spectroscopy (CD)dynamic light scattering (DLS)fluorescence spectroscopynanoparticlespoly (lactide-co-glycolide) (PLGA)recombinant human growth hormone (rhGH)secondary structuretertiary structure

Identifiers

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.