Evidence map›Paper›PMID 29544500›Full record

ArticleJournal of translational medicine2018

Intermittent PTH administration improves alveolar bone formation in type 1 diabetic rats with periodontitis.

Ji-Hye Kim, Ae Ri Kim, Yun Hui Choi, Aeryun Kim, Yongsung Sohn, Gye-Hyeong Woo, Jeong-Heon Cha, Eun-Jung Bak, Yun-Jung Yoo

Open access · goldAbstract read
In one paragraph

Article in Journal of translational medicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
1.5field-weighted citation impact, top 18% of its field
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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 30 citations in OpenAlex.

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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

9 authors at 5 institutions in 2 countries.

Ji-Hye KimDepartment of Dental Hygiene, Jeonju Kijeon College, Jeonju, Republic of Korea.
Ae Ri KimDepartment of Oral Biology, Yonsei University College of Dentistry, 134 Sinchon dong, Seodaemun-gu, Seoul, 120-752, Republic of Korea.
Yun Hui ChoiDepartment of Oral Biology, Yonsei University College of Dentistry, 134 Sinchon dong, Seodaemun-gu, Seoul, 120-752, Republic of Korea.
Aeryun KimDepartment of Oral Biology, Yonsei University College of Dentistry, 134 Sinchon dong, Seodaemun-gu, Seoul, 120-752, Republic of Korea.
Yongsung SohnDONG-A Pharm, Yongin-si, Gyeonggi-Do, Republic of Korea.
Gye-Hyeong WooDepartment of Clinical Laboratory Science, Semyung University, Jecheon, Republic of Korea.
Jeong-Heon ChaDepartment of Oral Biology, Yonsei University College of Dentistry, 134 Sinchon dong, Seodaemun-gu, Seoul, 120-752, Republic of Korea.
Eun-Jung BakDepartment of Oral Biology, Yonsei University College of Dentistry, 134 Sinchon dong, Seodaemun-gu, Seoul, 120-752, Republic of Korea. ejbak@yuhs.ac.
Yun-Jung YooDepartment of Oral Biology, Yonsei University College of Dentistry, 134 Sinchon dong, Seodaemun-gu, Seoul, 120-752, Republic of Korea. yu618@yuhs.ac.
Yonsei University · KRDong-A Pharmaceutical (South Korea) · KRSemyung University · KRStomatology Hospital · CNYonsei University College of Dentistry

Funding

Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning NRF-2014R1A2A1A11049412the Yonsei University College of Dentistry Fund 6-2016-0015
6 · The paper itself

Abstract

backgroundPeriodontitis is an infectious disease that manifests as alveolar bone loss surrounding the roots of teeth. Diabetes aggravates periodontitis-induced alveolar bone loss via suppression of bone formation. Intermittent parathyroid hormone (PTH) administration displays an anabolic effect on bone. In this study, we investigated the effect of intermittent PTH administration on alveolar bone loss in type 1 diabetic rats with periodontitis.

methodsRats were divided into control (C), periodontitis (P), periodontitis treated with PTH (P + PTH), diabetes with periodontitis (DP), and diabetes with periodontitis treated with PTH (DP + PTH) groups. To induce type 1 diabetes, rats were injected with streptozotocin and periodontitis was induced bilaterally by applying ligatures to the mandibular first molars for 30 days. During the experimental period, the P + PTH and DP + PTH groups were subcutaneously injected with PTH (40 μg/kg) three times per week, whereas the C, P, and DP groups were injected with citrate buffer. To observe the mineralization of the alveolar bone, the DP and DP + PTH groups were injected with calcein on days 10 and 27, and with alizarin red on day 20. Thirty days after ligation, histological findings and fluorescence labeling were analyzed in the furcations of the mandibular first molars. Sclerostin-positive osteocytes were assessed by immunohistochemical analyses.

resultsThe DP groups had smaller areas of alveolar bone than the other groups, and the DP + PTH group had a larger alveolar bone area than the DP group. The DP group had less osteoid formation than the C group, whereas the DP + PTH had greater osteoid formation than the DP group. Fluorescence labeling results revealed that the DP + PTH group had more mineral deposition on the alveolar bone than the DP group. The DP + PTH group exhibited lower percentage of sclerostin-positive osteocytes in alveolar bone than the DP group.

conclusionsIntermittent PTH administration diminishes alveolar bone loss and sclerostin expression in osteocytes, but increases osteoid formation and mineralization, suggesting that intermittent PTH administration attenuates diabetes-aggravated alveolar bone loss by the induction of bone formation. PTH-induced bone formation may be related to the regulation of osteocytic sclerostin expression in type 1 diabetic rats with periodontitis.

Indexed as

Alveolar Bone LossAlveolar ProcessAnimalsBlood GlucoseBody WeightBone Morphogenetic ProteinsDiabetes Mellitus, ExperimentalDiabetes Mellitus, Type 1FastingGenetic MarkersMaleOsteocytesOsteogenesisParathyroid HormonePeriodontitisRats, Inbred F344Blood GlucoseBone Morphogenetic ProteinsGenetic MarkersParathyroid HormoneSost protein, ratAlveolar bone formationDiabetesPeriodontitisPTH

Identifiers

PMID29544500
PMCPMC5856320
OpenAlexW2797326828

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LicenceCC BY
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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.