Growth hormone improved wound healing in rats using thermal injury as a model of trauma

Nutrition ◽  
1996 ◽  
Vol 12 (7-8) ◽  
pp. 576
Author(s):  
Michael J. Muller ◽  
Maureen A. Hollyoak ◽  
David N. Herndon
Keyword(s):  
Growth Hormone ◽  
Wound Healing ◽  
Thermal Injury

scholarly journals Sex Hormones, Growth Hormone, and the Cornea

Cells ◽  
2022 ◽  
Vol 11 (2) ◽  
pp. 224
Author(s):  
Tina B. McKay ◽  
Shrestha Priyadarsini ◽  
Dimitrios Karamichos
Keyword(s):  
Growth Hormone ◽  
Wound Healing ◽  
Sex Hormones ◽  
Human Growth ◽  
The Body ◽  
Dependent Manner ◽  
Insulin Growth Factor ◽  
Epithelial Regeneration ◽  
Health And Disease ◽  
Interest Differential

The growth and maintenance of nearly every tissue in the body is influenced by systemic hormones during embryonic development through puberty and into adulthood. Of the ~130 different hormones expressed in the human body, steroid hormones and peptide hormones are highly abundant in circulation and are known to regulate anabolic processes and wound healing in a tissue-dependent manner. Of interest, differential levels of sex hormones have been associated with ocular pathologies, including dry eye disease and keratoconus. In this review, we discuss key studies that have revealed a role for androgens and estrogens in the cornea with focus on ocular surface homeostasis, wound healing, and stromal thickness. We also review studies of human growth hormone and insulin growth factor-1 in influencing ocular growth and epithelial regeneration. While it is unclear if endogenous hormones contribute to differential corneal wound healing in common animal models, the abundance of evidence suggests that systemic hormone levels, as a function of age, should be considered as an experimental variable in studies of corneal health and disease.

scholarly journals Local Growth Hormone Therapy for Pressure Ulcer Healing on a Human Skin Mouse Model

2019 ◽  
Vol 20 (17) ◽  
pp. 4157 ◽  
Author(s):  
Lara Cristóbal ◽  
Nerea de los Reyes ◽  
Miguel A. Ortega ◽  
Melchor Álvarez-Mon ◽  
Natalio García-Honduvilla ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Wound Healing ◽  
Mouse Model ◽  
Human Skin ◽  
Pressure Ulcer ◽  
Healing Rate ◽  
Recombinant Human Growth Hormone ◽  
Control Group ◽  
P Value ◽  
Type I

The growth hormone is involved in skin homeostasis and wound healing. We hypothesize whether it is possible to improve pressure ulcer (PU) healing by locally applying the recombinant human growth hormone (rhGH) in a human skin mouse model. Non-obese diabetic/severe combined immunodeficient mice (n = 10) were engrafted with a full-thickness human skin graft. After 60 days with stable grafts, human skin underwent three cycles of ischemia-reperfusion with a compression device to create a PU. Mice were classified into two groups: rhGH treatment group (n = 5) and control group (n = 5). In the rhGH group for local intradermal injections, each had 0.15 mg (0.5IU) applied to the PU edges, once per week for four weeks. Evaluation of the wound healing was conducted with photographic and visual assessments, and histological analysis was performed after complete wound healing. The results showed a healing rate twice as fast in the rhGH group compared to the control group (1.25 ± 0.33 mm2/day versus 0.61 ± 0.27 mm2/day; p-value < 0.05), with a faster healing rate during the first 30 days. The rhGH group showed thicker skin (1953 ± 457 µm versus 1060 ± 208 µm; p-value < 0.05) in the repaired area, with a significant decrease in collagen type I/III ratio at wound closure (62 days, range 60–70). Local administration of the rhGH accelerates PU healing in our model. The rhGH may have a clinical use in pressure ulcer treatment.

scholarly journals Research of Electrosurgical Ablation with Antiadhesive Functionalization on Thermal and Histopathological Effects of Brain Tissues In Vivo

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Wen-Tien Hsiao ◽  
Chun-Ming Kung ◽  
Jan-Show Chu ◽  
Keng-Liang Ou ◽  
Pei-Wen Peng
Keyword(s):  
Wound Healing ◽  
Brain Tissue ◽  
Thermal Injury ◽  
Stainless Steel Needle ◽  
Electrosurgical Unit ◽  
Histopathological Effects ◽  
Injury Area ◽  
Rat Brain Tissue ◽  
Time Point

Thermal injury and tissue sticking are two major concerns in the electrosurgery. In the present study, the effect of lateral thermal injury caused by different electrosurgical electrodes on wound healing was investigated. An electrosurgical unit equipped with untreated (SS) and titanium oxide layer-coated (TiO2-coated) stainless steel needle-type electrodes was used to create lesions on the rat brain tissue. TiO2layers were produced by radiofrequency plasma and magnetron sputtering in the form of amorphous (TO-SS-1), anatase (TO-SS-2), and rutile (TO-SS-3) phase. Animals were sacrificed for evaluations at 0, 2, 7, and 28 days postoperatively. TO-SS-3 electrodes generated lower levels of sticking tissue, and the thermographs showed that the recorded highest temperature in brain tissue from the TO-SS-3 electrode was significantly lower than in the SS electrode. The total injury area of brain tissue caused by TO-SS-1 and TO-SS-3 electrodes was significantly lower than that caused by SS electrodes at each time point. The results of the present study reveal that the plating of electrodes with a TiO2film with rutile phases is an efficient method for improving the performance of electrosurgical units and should benefit wound healing.

scholarly journals Laryngeal Thermal Injury Model

2020 ◽  
Vol 41 (3) ◽  
pp. 626-632
Author(s):  
Gregory R Dion ◽  
Christian S Pingree ◽  
Pedro J Rico ◽  
Christine L Christensen
Keyword(s):  
Wound Healing ◽  
Thermal Injury ◽  
Injury Severity ◽  
Vocal Folds ◽  
Burn Wound ◽  
Burn Wound Healing ◽  
Microscopic Evaluation ◽  
Thermal Injuries ◽  
False Vocal ◽  
Over Time

Abstract A lack of reliable laryngeal thermal injury models precludes laryngeal burn wound healing studies and investigation of novel therapeutics. We hypothesize that a swine laryngeal burn model can allow for laryngeal burn evaluation over time. Twelve Yorkshire crossbreed swine underwent tracheostomy and endoscopically directed laryngeal burns using heated air (150–160°C). Swine larynges were evaluated and sectioned/stained at 12 hours, 1, 3, 7, 14, and 21 days. A board-certified veterinary pathologist assessed anatomic regions (left and right: epiglottis, true/false vocal folds, and subglottis) using a nine criteria histological injury scoring scale. Six swine were euthanized at scheduled endpoints, three prematurely (airway concerns), and three succumbed to airway complications after 16 to 36 hours. Endoscopic and gross examination from scheduled endpoints revealed massive supraglottic edema and tissue damage, particularly around the arytenoids, extending transglottically. Swine from premature endpoints had comparatively increased edema throughout. Microscopic evaluation documented an inverse relationship between injury severity score and time from injury. Inflammation severity decreased over time, nearly resolving by 14 days. Neutrophils predominated early with histiocytes appearing at 3 days. Granulation tissue appeared at 3 days, and early epiglottic and/or subglottic fibrosis appeared by 7 days and matured by 14 days. Edema, abundant initially, decreased by day 3 and resolved by day 7. This approach is the first to provide longitudinal analysis of laryngeal thermal injuries, reflecting some of the first temporal wound healing characteristic data in laryngeal thermal injuries and providing a platform for future therapeutic studies.

scholarly journals LncRNA XIST promotes extracellular matrix synthesis, proliferation and migration by targeting miR-29b-3p/COL1A1 in human skin fibroblasts after thermal injury

2019 ◽  
Vol 52 (1) ◽  
Author(s):  
Wei Cao ◽  
Youping Feng
Keyword(s):  
Extracellular Matrix ◽  
Cell Proliferation ◽  
Wound Healing ◽  
Western Blot ◽  
Thermal Injury ◽  
Human Skin Fibroblasts ◽  
Cell Proliferation And Migration ◽  
And Migration ◽  
Proliferation And Migration

Abstract Background Long noncoding RNAs (lncRNAs) have been reported to be associated with dermis process during burn wound healing. This study aimed to investigate the role of lncRNA X-inactive specific transcript (XIST) in human skin fibroblasts (HSF) and extracellular matrix (ECM) as well as the regulatory network of XIST/microRNA-29b-3p (miR-29b-3p)/collagen 1 alpha 1 (COL1A1). Methods The wound samples were collected from 25 patients with deep partial thickness burn at day 5 after burn. The thermal injured model was established using HSF cells. The expressions of XIST, miR-29b-3p and COL1A1 were measured by quantitative real-time polymerase chain reaction and western blot. ECM synthesis, cell proliferation and migration were detected by western blot, cell counting kit-8 and trans-well assays, respectively. The interaction between miR-29b-3p and XIST or COL1A1 was explored by bioinformatics analysis and luciferase reporter assay. Results The expressions of XIST and COL1A1 were enhanced but miR-29b-3p expression was decreased after thermal injury. XIST overexpression promoted ECM synthesis, cell proliferation and migration in thermal injured HSF cells. However, XIST knockdown played an opposite effect. miR-29b-3p overexpression inhibited ECM synthesis, cell proliferation and migration, which was reversed by XIST. COL1A1 silence suppressed ECM synthesis, cell proliferation and migration by miR-29b-3p targeting. Moreover, COL1A1 up-regulation weakened the effect of XIST silence on ECM synthesis and HSF cell function. Conclusion XIST promoted ECM synthesis, cell proliferation and migration by sponging miR-29b-3p and targeting COL1A1 in HSF cells after thermal injury, indicating the promoting role of XIST in wound healing.

A Prospective Clinical Study of the Effect of Recombinant Human Growth Hormone in Wound Healing of Severely Burned Children

QJM ◽  
2021 ◽  
Vol 114 (Supplement_1) ◽  
Author(s):  
Salah Nasser Mohamed ◽  
Nahed Samir Boghdady ◽  
Mina Agaiby Estawrow ◽  
Mariam Loutfy Ahmed Mohamed
Keyword(s):  
Growth Hormone ◽  
Wound Healing ◽  
Recombinant Human Growth Hormone ◽  
Total Body Surface Area ◽  
Human Growth ◽  
Control Group ◽  
P Value ◽  
Significant Difference ◽  
The Mean ◽  
Total Body

Abstract Background A burn is a thermal injury caused by biological, chemical, electrical and physical agents with local and systemic repercussions. There are several ways of classifying burns: Classification by mechanism or cause, depth and extent of burn . Objectives The objective of this study was to determine the safety and efficacy of using recombinant human growth hormone (rhGH) in the treatment of pediatric burn victims and their probable effect on accelerating burn wound healing. Patients and Methods This study was an Interventional randomized controlled Double Blind Study in which Patients subdivided randomly into 2 groups: Group A received somatotropine hormone after their 3 days of resuscitation besides their conventional treatment during their stay in the Burn ICU. Group B received the conventional treatment only in the Burn ICU. Results The comparison between the GH group and the control group showed that that there was statistically significant difference found between the two studied groups regarding TBSA of burn at 3rd week. The mean TBSA in GH group was ( 9.06 ± 7.47 ) while in the control group (13.94 ± 11.96) with P value (0.041). There was highly statistically significant difference found between the two studied groups regarding Insulin like growth factor .the mean Insulin like growth factor in GH group was (16.48 ± 11.40) while in the control group(2.77 ± 0.64) with P value(0.000). Conclusion The use of recombinant Growth hormone with a dose of 0.2 mg/Kg SQ 2 days per week with 3 days time interval in pediatric burn patients after their primary resuscitation from the burn injury, shows a marvelous improvement concerning the total body surface area of burn(TBSA) as the patient received the growth hormone showed a decrease total body surface area of burn(TBSA) than the control group. This may be accounted for the faster wound healing and readiness for grafting .

Sign in / Sign up

Export Citation Format

Share Document