Photobiomodulation of Matrix Metalloproteinases in Rat Calcaneal Tendons Julio Fernandes de Jesus, Diva Denelle Spadacci-Morena, Nayra Deise dos Anjos Rabelo, Carlos Eduardo Pinfildi, Thiago Yukio Fukuda, et al. Photobiomodulation Photomedicine and Laser Surgery, 2019 Objective: The main objective was to verify the modulatory effects of MMP-1, MMP-3, and MMP-13 levels on the partially injured calcaneal tendons of rat exposure to photobiomodulation. Background: Photobiomodulation has been shown to have anti-inflammatory and regenerative effects on tendon injuries. However, there is still uncertainty regarding the beneficial effects in matrix metalloproteinase (MMP) levels, especially MMP-1, -3, and -13. Materials and methods: Sixty-five male Wistar rats were used. Sixty were submitted to a direct trauma on the calcaneal tendons and were randomly distributed into the following six groups: LASER 1, 3, and 7 (10 partially injured calcaneal tendons in each group treated with photobiomodulation for 1, 3, and 7 days, respectively) and Sham 1, 3, and 7 (same injury, with simulated photobiomodulation). The remaining five animals were allocated to the normal group (no injury or treatment procedure). The 780 nm low-level laser was applied with 70 mW of mean power and 17.5 J/cm2 of fluency for 10 sec, once a day. The tendons were surgically removed and analyzed for MMP-1, MMP-3, and MMP-13 through immunohistochemistry. Results: MMP-3 levels remained close to normal in all experimental groups (p > 0.05); however, reductions (p < 0.05) in MMP-1 and MMP-13 levels were detected in the groups submitted to one, three, and seven low level laser therapy applications. Conclusions: The photobiomodulation protocol was able to reduce MMP-1 and MMP-13 levels in injured calcaneal tendons.
The role of dimethoate and UV-B on skin of Wistar rats TANIA RITA MORENO DE OLIVEIRA FERNANDES, CELINA TIZUKO FUJIYAMA OSHIMA, LEONARDO CARDILI, DANIEL ARAKI RIBEIRO, MARCELO SOUZA SILVA, et al. Anticancer Research, 2019 Background/Aim: The pesticide dimethoate (O-dimethyl-S- Nmethylcarbamoylmethyl phosphorodithioate) is able to induce severe acute toxicity in living organisms. The aim of this study was to evaluate the effects of ultraviolet radiation, alone or combined with exposure to dimethoate, on the rat skin. Materials and Methods: A total of 38 Wistar female rats (Rattus norvegicus albinus), were distributed into four groups: A (n=9) control group, B (n=10) exposed to ultraviolet-B radiation (UV-B), C (n=10) exposed to UV-B followed by application of dimethoate (UV-B+AGRO) and group D (n=9) exposed to dimethoate (AGRO). Histological examination of the tissues, as well as immunohistochemistry for cleaved caspase 3, Ki-67 and COX-2 expression were performed to all groups. Results: Animals submitted to UV-B exhibited hyperkeratosis with moderate cell atypia. Regarding exposure to UV-B+AGRO, the animals presented hyperkeratosis and atrophy, whereas in animals exposed to AGRO, only atrophy was noticed. The immunohistochemical results on skin revealed that UVB, AGRO and UVB+AGRO decreased cleaved caspase 3 and Ki-67 expression when compared to the control group (p<0.05). COX-2 expression decreased to UVB or AGRO groups compared to controls (p<0.05). Conclusion: UV-B or AGRO exposure is able to induce histopathological changes and altered expression of cleaved caspase-3 and Ki-67 in rat skin, thus being categorized as a risk condition for skin carcinogenesis.
Effect of low power laser in biomodulation of cultured osteoblastic cells of wistar rats Maria Jose Misael da Silva Morsoleto, Valeria Sella, Paula Machado, Fernando do Bomfim, Maria Helena Fernandes, et al. Acta Cirurgica Brasileira, 2019 Purpose To analyze aspects of the biomodulating effect of light in biological tissues, bone cells from surgical explants of the femur of rats were irradiated with low intensity laser. Methods Bone cells were cultured and irradiated with LASER light (GaAlAs). Growth, cell viability, mineralized matrix formation, total protein dosage, immunostimulatory properties, cytochemical analysis, gene expression of bone proteins were examined using live cell imaging and cell counting by colorimetric assay. The gene expression of: alkaline phosphatase (ALP), type 1 collagen, osteocalcin and osteopontin through the real-time polymerase chain reaction. Results At 8 days, the viability of the irradiated culture was 82.3% and 72.4% in non-irradiated cells. At 18 days, the cellular viability (with laser) was 77.42% and 47.62% without laser. At 8 days, the total protein concentration was 21.622 mg / mol in the irradiated group and 16, 604 mg / mol in the non-irradiated group and at 18 days the concentration was 37.25 mg / mol in the irradiated group and 24, 95 mg / mol in the non-irradiated group. Conclusion The laser interfered in the histochemical reaction, cell viability, matrix mineralization, and maintained the cellular expression of proteins
Dosimetry of a Carbon Dioxide Laser for Black Tattoo Removal in a Rat Model Fabio D'Arienzo, Fernando Russo Costa do Bomfim, Valéria Regina Gonzalez Sella, Manuel de Jesus Simões, Hélio Plapler Photomedicine and Laser Surgery, 2018 OBJECTIVE To determine the optimal parameters of power, energy, and time for the application of a carbon dioxide laser for Tribal Black ink tattoo removal. BACKGROUND DATA The use of antiquated techniques to remove tattoos demonstrates the difficulty of making advances in this field. Studies by the American Society for Dermatologic Surgery have shown that 5% of the global population has at least one tattoo on the body, with 10% of them wanting a tattoo to be removed. Laser removal has been studied and improved as a less invasive and safer method of surgical removal; however, the ideal dosimetry is not yet established. MATERIALS AND METHODS Thirty-three male Wistar rats were anesthetized and tattooed in the dorsal region in a quadrangular manner. The rats were distributed under low/null luminosity for 4 months into three equal and random groups for the application of the laser, namely, G1 (P = 0.6 W, Et = 0.9 J), G2 (P = 0.8 W, Et = 1, 2 J), and G3 (P = 1 W, Et = 1.5 J), with the application time standardized to 0.15 sec with 10 passes per application. The procedure was repeated at intervals of 4 weeks until 10 cycles of laser application were completed. The images were studied using the ImageJ program and histological analysis and subjected to the one-way ANOVA test for Tukey's multiple comparison post-test. RESULTS We observed a significant difference between groups 1 and 3 and between groups 2 and 3. CONCLUSIONS The laser with the parameters of P = 1 W, Et = 1.5 J, and t = 0.15 sec yields better Tribal Black ink removal results.
Influence of low-level laser irradiation on osteocalcin protein and gene expression in bone tissue Fernando Russo Costa do Bomfim, Valeria Regina Gonzalez Sella, Ronaldo Luís Thomasini, Helio Plapler Acta Cirurgica Brasileira, 2018 PURPOSE To evaluate osteocalcin gene and protein expression in vitro and in an in vivo model of ostectomy. METHODS Twenty Wistar rats were assigned into two groups A (n=10, laser) and B (n=10, control). Ostectomy was performed in the femur diaphysis; the twenty fragments removed, composed in vitro groups named as in vivo (A and B) and cultivated in CO2 atmosphere for thirteen days. Low-level laser irradiation was performed in groups A (in vivo and in vitro) by an GaAlAs device (λ=808 nm, dose of 2J/cm2, power of 200mW, power density of 0.2W/cm2, total energy of 1.25J, spot diameter of 0.02mm) for 5 seconds, at one point, daily. It was performed immunocytochemistry assays in vivo and in vitro groups. In vitro groups were also submitted to RNA extraction, cDNA synthesis and gene expression by quantitative PCR. Statistical analysis was realized with p<0.05. RESULTS Immunocytochemistry scores showed no significant differences between control and laser groups either in vivo and in vitro. Gene expression also showed no statistical differences. CONCLUSION Low-level laser irradiation did not alter osteocalcin protein and gene expression in vivo and in vitro in the studied period but it may have been expressed them in an earlier period.
Low-Level Laser Therapy (780 nm) on VEGF Modulation at Partially Injured Achilles Tendon Julio Fernandes de Jesus, Diva Denelle Spadacci-Morena, Nayra Deise dos Anjos Rabelo, Carlos Eduardo Pinfildi, Thiago Yukio Fukuda, et al. Photomedicine and Laser Surgery, 2016 OBJECTIVE The aim of this study was to analyze the modulatory effects of near infrared (780 nm) low-level laser therapy (LLLT) on the presence of the vascular endothelial growth factor (VEGF) in the partially injured Achilles tendons of rats. BACKGROUND LLLT stimulates the healing process for Achilles tendon injuries, although the extent of the modulatory effect of LLLT on the VEGF levels found in the injured tendons remains unclear. METHODS Sixty-five male Wistar rats were distributed in the following seven groups: LASER 1, 3, and 7 (10 partially injured Achilles tendons in each group, which were treated with LLLT for 1, 3, and 7 days, respectively); Sham 1, 3, and 7 (same injury, with simulated LLLT); Control group containing the five remaining animals and in which no procedures were performed. LLLT was applied once a day for 10 sec, with a mean power of 70 mW and fluency of 17.5 J/cm(2). After euthanasia, all of the Achilles tendons were surgically removed and the VEGF levels were analyzed using immunohistochemistry. RESULTS The VEGF levels remained close to normal (p > 0.05) when comparing the experimental groups (LASER and Sham: 1, 3, and 7) with the Control group. CONCLUSION LLLT did not stimulate the expression of VEGF in the treated Achilles tendons.
Altered cell trafficking of mesenteric lymphocytes after heterotopic small bowel transplantation using systemic venous drainage Transplantation Proceedings, 1993
Photobiomodulation Modulates Proliferation and Gene Expression Related to Calcium Signaling in Human Osteoblast Cells FRC do Bomfim, VRG Sella, RL Thomasini, H Plapler Journal of Lasers in Medical Sciences 15, e45 , 2024 2024 Citations: 3
Photobiomodulation Modulates Proliferation and Gene Expression Related to Calcium Signaling in Human Osteoblast Cells. FR Costa do Bomfim, VR Gonzalez Sella, R Luis Thomasini, H Plapler Journal of Lasers in Medical Sciences 15 , 2024 2024 Citations: 1
Pandemos F Carelli, H Plapler, AF Lens Editora Rua do Sabão , 2022 2022
Photobiomodulation effect in tumoral necrosis factor-alpha (TNF-α) on the viability of random skin flap in rats GR Esteves, IE Junior, IFB Masson, AFP Machado, MCD Oliveira, ... Lasers in medical science 37 (3), 1495-1501 , 2022 2022 Citations: 12
Medical humor and its role in the process of social perception of the disease (and of the patient) H Plapler, FB Carelli Research and Humanities in Medical Education 8, 18-24 , 2021 2021
Medical humor and its role in the process of social perception of the disease H Plapler, FB Carelli 2021
The role of dimethoate and UV-B on skin of Wistar rats TRM DE OLIVEIRA FERNANDES, CTF Oshima, L Cardili, DA Ribeiro, ... Anticancer Research 39 (9), 5179-5184 , 2019 2019 Citations: 6
Epidemiological study of Brazilian judo injuries P Machado, H Plapler Acta Scientific Orthopaedics Volume 2 (8) , 2019 2019 Citations: 16
Photobiomodulation of matrix metalloproteinases in rat calcaneal tendons J Fernandes de Jesus, DD Spadacci-Morena, NDA Rabelo, CE Pinfildi, ... Photobiomodulation, photomedicine, and laser surgery 37 (7), 421-427 , 2019 2019 Citations: 17
Effect of low power laser in biomodulation of cultured osteoblastic cells of Wistar rats MJM da Silva Morsoleto, V Sella, P Machado, F do Bomfim, ... Acta cirurgica brasileira 34 (2), e201900210 , 2019 2019 Citations: 2
Effect of low power laser in biomodulation of cultured osteoblastic cells of Wistar rats MJMS Morsoleto, V Sella, P Machado, F Bomfim, MH Fernandes, ... Acta cirurgica brasileira 34 (02), e201900210 , 2019 2019 Citations: 20
Dosimetry of a carbon dioxide laser for black tattoo removal in a rat model F D'Arienzo, FRC Bomfim, VRG Sella, MJ Simoes, H Plapler Photomedicine and Laser Surgery 36 (12), 667-675 , 2018 2018 Citations: 4
Influence of low-level laser irradiation on osteocalcin protein and gene expression in bone tissue 1 FRC Bomfim, VRG Sella, RL Thomasini, H Plapler Acta cirurgica brasileira 33 (09), 736-743 , 2018 2018 Citations: 11
Carotid anastomosis using diode lasers of different wavelengths and the evaluation of the arterial wall resistance in swine LB Aledi, DJ Fagundes, H Plapler Int J Vasc Surg Med 4 (1), 004-009 , 2018 2018
Comparison of intervertebral disc injuries caused by different diode laser wavelengths Spine Res CCS Ferreira, VR Sella, FR Bomfim, H Plapler, RF Silva 2018
PRESENCE OF OSTEOCALCIN PROTEIN AND GENE EXPRESSION IN BONE TISSUE AFTER LOW-LEVEL LASER IRRADIATION F Bomfim, V Sella, R Thomasini, H Plapler LASERS IN SURGERY AND MEDICINE 49, 60-60 , 2017 2017
OP-ACTINIC CHEILITIS TREATMENT BY TWO CO2 LASER VAPORIZATION PROTOCOLS: CLINCOHISTOLOGICAL ANALYSIS AND 10 YEARS CLINICAL FFDEG PERES, AAH BRANDÃO, YR CARVALHO, U DÓRIA FILHO, ... Oral surgery, oral medicine, oral pathology and oral radiology 123 (2), e38-e39 , 2017 2017
Low-level laser therapy (780 nm) on VEGF modulation at partially injured Achilles tendon JF de Jesus, DD Spadacci-Morena, ND dos Anjos Rabelo, CE Pinfildi, ... Photomedicine and laser surgery 34 (8), 331-335 , 2016 2016 Citations: 15
The DNA of the doctor/patient relationship H Plapler, F Carelli VIA ATLANTICA 29, 79-94 , 2016 2016
Evaluation of different laser wavelengths on ablation lesion and residual thermal injury in intervertebral discs of the lumbar spine H Plapler, MW Mancini, VRG Sella, FRC Bomfim Lasers in medical science 31 (3), 421-428 , 2016 2016 Citations: 18
MOST CITED SCHOLAR PUBLICATIONS
A new method for hemorrhoid surgery: intrahemorrhoidal diode laser, does it work? H Plapler, R Hage, J Duarte, N Lopes, I Masson, C Cazarini, T Fukuda Photomedicine and laser surgery 27 (5), 819-823 , 2009 2009 Citations: 139
Cyclooxygenase-2 and vascular endothelial growth factor expression in 5-fluorouracil-induced oral mucositis in hamsters: evaluation of two low-intensity laser protocols NNF Lopes, H Plapler, MC Chavantes, RV Lalla, EM Yoshimura, ... Supportive care in cancer 17 (11), 1409-1415 , 2009 2009 Citations: 134
Web-based learning in undergraduate medical education: development and assessment of an online course on experimental surgery V Bernardo, MP Ramos, H Plapler, LFP De Figueiredo, HB Nader, ... International journal of medical informatics 73 (9-10), 731-742 , 2004 2004 Citations: 130
Effect of low-level laser therapy on bone repair: a randomized controlled experimental study VRG Sella, FRC do Bomfim, PCD Machado, MJM da Silva Morsoleto, ... Lasers in medical science 30 (3), 1061-1068 , 2015 2015 Citations: 113
Effects of low‐level laser therapy on collagen expression and neutrophil infiltrate in 5‐fluorouracil‐induced oral mucositis in hamsters NNF Lopes, H Plapler, RV Lalla, MC Chavantes, EM Yoshimura, ... Lasers in surgery and medicine 42 (6), 546-552 , 2010 2010 Citations: 108
Infrared low-level diode laser on inflammatory process modulation in mice: pro-and anti-inflammatory cytokines TY Fukuda, MM Tanji, SR Silva, MN Sato, H Plapler Lasers in Medical Science 28 (5), 1305-1313 , 2013 2013 Citations: 93
A new method for hemorrhoid surgery: experimental model of diode laser application in monkeys H Plapler Photomedicine and Laser Surgery 26 (2), 143-146 , 2008 2008 Citations: 54
Low-level laser therapy in IL-1β, COX-2, and PGE2 modulation in partially injured Achilles tendon JF de Jesus, DD Spadacci-Morena, ND dos Anjos Rabelo, CE Pinfildi, ... Lasers in medical science 30 (1), 153-158 , 2015 2015 Citations: 47
Low level laser therapy (AlGaInP) applied at 5J/cm 2 reduces the proliferation of Staphylococcus aureus MRSA in infected wounds and intact skin of rats DCGG Silva, H Plapler, MM Costa, SRG Silva, MCA Sá, BSL Silva Anais brasileiros de dermatologia 88, 50-55 , 2013 2013 Citations: 33
Low-level laser irradiation, cyclooxygenase-2 (COX-2) expression and necrosis of random skin flaps in rats I Esteves Junior, IB Masson, CTF Oshima, APR Paiotti, RE Liebano, ... Lasers in medical science 27 (3), 655-660 , 2012 2012 Citations: 33
350 Ambulatory Hemorrhoidectomies Using a Scanner Coupled to a CO 2 Laser H Plapler, AJ de Faria Netto, M da Silva Pedro Journal of clinical laser medicine & surgery 18 (5), 259-262 , 2000 2000 Citations: 33
Colonic fermentation and nutritional recovery in rats with massive small bowel resection E Aghdassi, H Plapler, R Kurian, N Raina, D Royall, KN Jeejeebhoy, ... Gastroenterology 107 (3), 637-642 , 1994 1994 Citations: 33
Single session to infrared low level diode laser on TNF‐α and IL‐6 cytokines release by mononuclear spleen cells in mice: A pilot study TY Fukuda, MM Tanji, JF Jesus, MN Sato, AJS Duarte, H Plapler Lasers in Surgery and Medicine 42 (6), 584-588 , 2010 2010 Citations: 29
Low-level laser therapy on tissue repair of partially injured achilles tendon in rats JF de Jesus, DD Spadacci-Morena, NDA Rabelo, CE Pinfildi, TY Fukuda, ... Photomedicine and laser surgery 32 (6), 345-350 , 2014 2014 Citations: 28
Localização de lesões tumorais induzidas pela 1, 2-dimetilhidrazina e seu grau de atipia no cólon de ratos LLS Larangeira, MO Taha, A Ferme, R Lemos, H Plapler Acta Cirúrgica Brasileira 13 (3), 177-182 , 1998 1998 Citations: 26
Transcolonoscopic extraperitoneal cecostomy AJ Ganc, AJF Netto, AC Morrell, H Plapler, JC Ardengh Endoscopy 20 (06), 309-312 , 1988 1988 Citations: 23
Effect of low power laser in biomodulation of cultured osteoblastic cells of Wistar rats MJMS Morsoleto, V Sella, P Machado, F Bomfim, MH Fernandes, ... Acta cirurgica brasileira 34 (02), e201900210 , 2019 2019 Citations: 20
A study of actinic cheilitis treatment by two low-morbidity CO 2 laser vaporization one-pass protocols FF de Godoy Peres, A Aigotti Haberbeck Brandão, Y Rodarte Carvalho, ... Lasers in medical science 24 (3), 375-385 , 2009 2009 Citations: 20
Evaluation of different laser wavelengths on ablation lesion and residual thermal injury in intervertebral discs of the lumbar spine H Plapler, MW Mancini, VRG Sella, FRC Bomfim Lasers in medical science 31 (3), 421-428 , 2016 2016 Citations: 18
Photobiomodulation of matrix metalloproteinases in rat calcaneal tendons J Fernandes de Jesus, DD Spadacci-Morena, NDA Rabelo, CE Pinfildi, ... Photobiomodulation, photomedicine, and laser surgery 37 (7), 421-427 , 2019 2019 Citations: 17