Effect of Different Doses of Synthetic Parathyroid Hormone (1-34) on Bone around Implants: a Preclinical Rat Model

Abstract The aim of this study was to evaluate the effect of a lower dose of parathyroid hormone- PTH (1-34) on osteogenic potential of bone healing around titanium implants inserted into the tibia of rats. A blind parallel study was conducted in 45 adult male Wistar rats. Each rat received one titanium implant (4.5 x 2.2 mm) and was randomly assigned to receive subcutaneous injections, three times/week for 30 days, of the following treatments: group 1 - 40 µg/kg of PTH (1-34) (n=15); group 2 - 2 µg/kg of PTH (1-34) (n=15) and; group 3 - only the vehicle required for hormone dissolution (n=15). Thirty days after surgery, the animals were sacrificed and specimens containing the implant and the surrounding bone were removed and processed for non-decalcified sections. The sections were evaluated according to the following histometric parameters: proportion of mineralized tissue (PMT) adjacent to the implant threads (500 µm band); bone filling within the limits of the threads (BF) and; bone-to-implant contact (BIC). For the cortical region, both hormone dosages (groups 1 and 2) promoted better results, for all parameters, when compared to control group (p<0.05). Similar results were observed for the BF parameter in the cancellous region (p=0.0394). Therefore, systemic administration of PTH (1-34) stimulates bone formation around titanium implants, even at low doses.

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Pengaruh pemberian ekstrak pasak bumi (Eurycoma longifolia Jack) terhadap kualitas spermatozoa tikus wistar (Rattus norvegicus)

Jurnal e-Biomedik ◽

10.35790/ebm.4.1.2016.10867 ◽

2016 ◽

Vol 4 (1) ◽

Author(s):

Bill C. A. Bogar ◽

Lydia Tendean ◽

Grace L. A. Turalaki

Keyword(s):

Rattus Norvegicus ◽

Control Group ◽

Adult Rats ◽

Beneficial Effects ◽

Eurycoma Longifolia ◽

Male Wistar Rats ◽

Group 3 ◽

Eurycoma Longifolia Jack ◽

Group 2 ◽

Group 1

Abstract: Infertility is an inability of couples to reproduce after carrying out sexual intercourses for at least a year without using any contraceptives. There are 10-15% couples worldwide who experience infertility problems and almost one half of them is on men. Spermatozoa qualities including concentration, motility, and morphology are used as an indicator for men’s fertility. The utilization of herbal medicine (i.e. Eurycoma longifolia Jack extracts) is now being an alternative way to improve fertility among the community. This study was carried out to find the effects of Eurycoma longifolia Jack on spermatozoa qualities. This experimental study was conducted to nine male wistar rats (Rattus norvegicus) weighing from 200-250 grams, aging from 12-15 months. These nine adult rats were divided into 3 groups of 3 rats each. 400 and 600 mg/kg/day of Eurycoma longifolia Jack extracts were orally administrated to group 1 and 2 respectively, while group 3 were treated as control group. After 50 days, the animals of group 1, 2 and 3 were sacrificed. As a result, there is an improvement in qualities of spermatozoa which are statistically significant (p<0,05) in group 2. Thus, provide the beneficial effects of 600mg/kg Eurycoma longifolia Jack extracts on the qualities of spermatozoa.Keywords: pasak bumi, spermatozoaAbstrak: Infertilitas adalah ketidakmampuan pasangan untuk dapat hamil setelah satu tahun berhubungan intim tanpa menggunakan kontrasepsi. Ada sekitar 10 – 15 % pasangan mengalami masalah infertilitas dan hampir setengahnya masalah ada pada pria. Kualitas spermatozoa meliputi konsentrasi, motilitas dan morfologi spermatozoa merupakan salah satu indikator fertilitas pada pria. Penggunaan tanaman herbal atau yang lebih dikenal jamu telah menjadi pengobatan alternatif di masyarakat. Tanaman herbal yang dimaksud adalah pasak bumi. Penelitian ini bertujuan untuk mengetahui efek dari esktrak pasak bumi (Eurycoma longifolia Jack) terhadap kualitas spermatozoa. Penelitian ini menggunakan 9 ekor tikus wistar jantan (Rattus norvegicus) dengan berat badan 200-250 g berumur 12-15 bulan. Sembilan ekor wistar dibagi menjadi tiga kelompok, dan satu kelompok terdiri dari tiga ekor tikus wistar. Penelitian ini dilaksankan selama 50 hari. Esktrak pasak bumi (Eurycoma longifolia Jack) diberikan dengan dosis 400mg/kgBB per hari pada perlakuan 1 dan dosis 600 mg/kgBB per hari pada perlakuan 2. Setelah 50 hari hewan coba pada kelompok kontrol, perlakuan 1 dan perlakuan 2 diterminasi. Hasil penelitian memperlihatkan terjadi peningkatan kualitas spermatozoa yang signifikan secara statistik (p<0,05) pada perlakuan 2 terhadap kelompok kontrol. Hasil tersebut menunjukan bahwa Esktrak pasak bumi (Eurycoma longifolia Jack) pada dosis 600 mg/kgBB dapat meningkatkan kualitas spermatozoa.Kata kunci: pasak bumi, spermatozoa

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Preliminary Study on the Effect of Methanolic Extract of Watermelon (Citrullus lanatus) Rind on Prednisolone Suppressed Immunity in Male Wistar Rats

Journal of Advances in Medical and Pharmaceutical Sciences ◽

10.9734/jamps/2021/v23i230217 ◽

2021 ◽

pp. 1-6

Author(s):

Nyejirime Young Wike ◽

Mobisson Samuel Kelechi ◽

Godspower Onyeso ◽

Okekem Amadi ◽

Elizabeth Eepho Krukru

Keyword(s):

Body Weight ◽

Wistar Rats ◽

Methanolic Extract ◽

Citrullus Lanatus ◽

Control Group ◽

Group 4 ◽

Watermelon Rind ◽

Male Wistar Rats ◽

Group 3 ◽

Group 2

Citrullus lanatus thumb (Cucurbitaceae) commonly called watermelon is widely consumed in this part of the world as food and medicine. This study was carried out to examine the effect of methanolic extract of watermelon (Citrullus lanatus) rind on prednisolone suppressed immunity in male wistar rats. A total of 20 male wistar rats weighing 150-294g were used in 4 groups with five rats each. Group 1, the control group was given distilled water and feed, Group 2 was given 200 mg/kg body weight of methanolic extract of watermelon rind, Group 3 rats were given 2.5 mg/kg body weight of prednisolone and Group 4 rats were given 2.5 mg/kg body weight of prednisolone and 200 mg/kg body weight of methanolic extract of watermelon rind. Prednisolone and the methanolic extract of watermelon rind were administered orally for a period of 30 days. Blood samples were collected by cardio puncture from the rats for white blood cell (WBC), lymphocyte, and granulocyte and monocyte counts at the end of the experiment. The data were statistically analysed using one-way ANOVA (Analysis of variance). Data were considered significant at p<0.05. The results obtained showed that methanolic extract of watermelon rind caused a significant increasen in immune function of rats when compared with the control and immune suppressed rats.

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The influence of cigarette smoke inhalation on bone density: a radiographic study in rats

Brazilian Oral Research ◽

10.1590/s1806-83242005000100009 ◽

2005 ◽

Vol 19 (1) ◽

pp. 47-51 ◽

Cited By ~ 17

Author(s):

João Batista César-Neto ◽

Bruno Braga Benatti ◽

Flávio Ricardo Manzi ◽

Enilson Antônio Sallum ◽

Antônio Wilson Sallum ◽

...

Keyword(s):

Bone Density ◽

Cigarette Smoke ◽

Bone Quality ◽

Experimental Period ◽

Smoke Inhalation ◽

Control Group ◽

Continuous Exposure ◽

Male Wistar Rats ◽

Group 3 ◽

Group 2

The aim of this study was to evaluate the influence of cigarette smoke inhalation (CSI) and its cessation on tibiae bone quality. Forty-one male Wistar rats were randomly assigned to one of the following groups: Group 1 - control (n = 14), Group 2 - 3 months of CSI and 2 months without exposure to CSI (n = 12), and Group 3 - 5 months of CSI (n = 15). At the end of the experimental period, the animals were sacrificed, the tibiae removed and immediately radiographed for photodensitometric analysis. The results showed that continuous exposure to cigarette smoke promoted a significantly reduced bone density (p < 0.05) (3.22 mm Al eq ± 0.58; 2.93 mm Al eq ± 0.45; 1.86 mm Al eq ± 0.35; for groups 1, 2 and 3, respectively). Similar levels of bone density were observed for the control and cessation groups (groups 1 and 2 - p > 0.05). Thus, within the limits of the present study, it can be concluded that CSI may affect tibiae bone quality, and CSI cessation results in a return towards the level of the control group.

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A Histomophometric Analysis of Bone Healing around Zirconia Implant

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.342-343.593 ◽

2007 ◽

Vol 342-343 ◽

pp. 593-596

Author(s):

Jeong Taek Lee ◽

Seong Joo Heo ◽

Jai Young Koak ◽

Seong Kyun Kim ◽

Su Young Lee ◽

...

Keyword(s):

Surface Characteristics ◽

Titanium Implants ◽

Histomorphometric Analysis ◽

Group 4 ◽

Bone Response ◽

Bone To Implant Contact ◽

Group 3 ◽

Group 2 ◽

Group 1 ◽

Zirconia Implant

Zirconia was introduced into the dentistry as a metal-replacement material because of its outstanding mechanical properties like high flexural strength and fracture toughness. The purpose of this study was to evaluate bone response and examine the surface characteristics of zirconiabased implant. Screw shaped c.p. titanium implants(group 1), HA-based composite implants(group 2), HA/FA coated ZrO2 implants(group 3) and FA coated ZrO2 implants(group 4) were installed in rabbit tibias. After 4 and 12 weeks of healing period, the histomorphometric analysis was performed with an Olympus BX microscope connected to a computer. The percentage of bone-to-implant contact in the 3 best consecutive threads and the percentage of bone inside the same threads were calculated. the present study demonstrated the excellent bone response of ZrO2-based implants fabricated by various methods to combine the advantages of ZrO2, HA, and FA.

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The effect of alveolar decortication on orthodontically induced root resorption

The Angle Orthodontist ◽

10.2319/051819-344.1 ◽

2020 ◽

Vol 90 (4) ◽

pp. 524-531 ◽

Cited By ~ 1

Author(s):

Po-Jung Chen ◽

Joy H. Chang ◽

Eliane H. Dutra ◽

Ahmad Ahmida ◽

Ravindra Nanda ◽

...

Keyword(s):

Tooth Movement ◽

Root Resorption ◽

Orthodontic Tooth Movement ◽

Control Group ◽

Tartrate Resistant Acid Phosphatase ◽

Micro Computed Tomography ◽

Root Volume ◽

Male Wistar Rats ◽

Group 3 ◽

Group 2

ABSTRACT Objective To determine the effect of alveolar decortication on orthodontically induced root resorption. Materials and Methods A total of 24 male Wistar rats (14 week old) were used. The rats were randomly divided into one of the following three groups: group 1 (control group), orthodontic tooth movement (OTM) for 2 weeks; group 2, OTM for 2 weeks + two alveolar decortications (2AD); group 3, OTM for 2 weeks + four alveolar decortications (4AD). The first molar was moved mesially for 2 weeks. Micro computed tomography was used to analyze root volume. In addition, histological sections were stained with Tartrate Resistant Acid Phosphatase (TRAP) to quantify the osteoclast number. Results The buccal root volume in OTM + 4AD group was decreased by 8.92% and 6.11% when compared with the OTM-only group and OTM + 2AD group, respectively. Similarly, the other four root volumes in the OTM + 4AD group was decreased by 8.99% and 5.24% when compared with the OTM-only group and OTM + 2AD group, respectively. There was a decrease in buccal root density in the OTM + 4AD group by 4.66% and 3.56% when compared with the OTM-only group and the OTM + 2AD group, respectively. In addition, there was an increase in the number of osteoclasts by 195.73% and 98.74% in OTM + 4AD group in comparison with the OTM and OTM + 2AD group. Conclusions The amount of orthodontically induced root resorption was positively correlated with the extent of surgical injury used to accelerate orthodontic tooth movement.

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Effect of Vasoactive Intestinal Peptide (VIP) on Cytokine Levels and Haemostatic and Biochemical Parameters in A Rat Endotoxaemic Model

Bulletin of the Veterinary Institute in Pulawy ◽

10.2478/v10213-012-0012-6 ◽

2012 ◽

Vol 56 (1) ◽

pp. 63-67

Author(s):

Ramazan Col ◽

Zafer Durgun

Keyword(s):

Vasoactive Intestinal Peptide ◽

Biochemical Parameters ◽

Control Group ◽

E Coli ◽

Group 4 ◽

Tnf Α ◽

Cytokine Levels ◽

Male Wistar Rats ◽

Group 3 ◽

Group 2

Abstract The presented study was planned to determine whether vasoactive intestinal peptide (VIP) could prevent cytokine haemostatic, haematological, and biochemical disturbances in LPS-treated rats. Adult male Wistar rats (weight range: 200-250 g) were used. The study included four groups: group 1 served as a control group (C); animals in group 2 were given intravenously 1.6 mg/100 g of LPS (E. coli, serotype 0.111:B4); in group 3, rats were injected intraperitoneally with 25 ng/kg of VIP; in group 4, the same doses of VIP and LPS were injected simultaneously. Blood samples were collected 6 h after treatments. In endotoxaemic rats, platelet count, fibrinogen, and antithrombin levels were decreased, the activated partial thromboplastin time and prothrombin time were prolonged, and leucopoenia, as well as significant changes in differential leukocyte percentage were demonstrated. In addition, LPS caused statistically significant increases in plasma TNF- , IL-6, and IL-10 levels, and AST, ALT, creatinine, cholesterol, triglyceride concentrations. However, it caused a statistically significant decrease in total protein and albumin levels when compared to control group. The results showed that during endotoxaemia, VIP had moderately therapeutic effect as an antiinflammatory agent, suppressing TNF-α and IL-6, and stimulating IL-10; however, it was not effective against the adverse effect of LPS on investigated haematological and biochemical parameters.

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Effects of low-dose aspirin on the osseointegration process in rats

International Journal of Implant Dentistry ◽

10.1186/s40729-020-00283-x ◽

2021 ◽

Vol 7 (1) ◽

Author(s):

Ana Carolina Lupepsa ◽

Paula Vargas-Sanchez ◽

Marcella Goetz Moro ◽

Leomar Emanuel Almeida Mecca ◽

Marcela Claudino ◽

...

Keyword(s):

Low Dose ◽

Inhibitory Effect ◽

Control Group ◽

Implant Placement ◽

Dose Aspirin ◽

Low Dose Aspirin ◽

Male Wistar Rats ◽

Bone To Implant Contact ◽

Bone Deposition

Abstract Background Several drugs are capable of promoting changes in bone metabolism. The aim of this study was to evaluate the effect of long-term low-dose aspirin (LDA) therapy on implant osseointegration. Methods Male Wistar rats were divided into 4 groups (n = 8/group) according to oral gavage solution received prior (42 days) to the implant surgery on the tibia. The control group was treated with saline solution for 7 (CG-7) and 28 (CG-28) days. The use of low-dose aspirin was performed in AG groups (6.75 mg/kg of aspirin) for 7 (AG-7) and 28 (AG-28) days. After experimental periods, histomorphometric evaluation of bone-to-implant contact (BIC) and the bone area between threads (BABT) was performed. Results Reduced BIC values were detected in AG-7 (62.8% ± 17.1) group compared to AG-28 (91.9% ± 5.4), CG-7 (82.7% ± 15.2), and CG-28 (89.9% ± 9.7). BABT evaluation revealed lower values in AG-7 (70.9% ± 15.2) compared to AG-28 (95.4% ± 3.7) and CG-28 (87.1% ± 10.2) groups. Conclusions The treatment with low doses of aspirin promoted a discrete inhibitory effect in the early stages (7 days) of repair after implant placement, specifically in the bone deposition. However, these effects were not detected in the late stages (28 days), considering BIC and BABT parameters.

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Active head movements facilitate compensation for effects of prism displacement on dynamic gait12

Journal of Vestibular Research ◽

10.3233/ves-2006-161-203 ◽

2006 ◽

Vol 16 (1-2) ◽

pp. 29-33

Author(s):

Kim R. Gottshall ◽

Michael E. Hoffer ◽

Helen S. Cohen ◽

Robert J. Moore

Keyword(s):

Head Movement ◽

Sensory Modality ◽

Normal Subjects ◽

The Body ◽

Head Movements ◽

Head Motion ◽

Control Group ◽

Entire Body ◽

Group 3 ◽

Group 2

Study design: Four groups, between-subjects study. Objectives: To investigate the effects of exercise on adaptation of normal subjects who had been artificially spatially disoriented. Background: Many patients referred for rehabilitation experience sensory changes, due to age or disease processes, and these changes affect motor skill. The best way to train patients to adapt to these changes and to improve their sensorimotor skills is unclear. Using normal subjects, we tested the hypothesis that active, planned head movement is needed to adapt to modified visual input. Methods and measures: Eighty male and female subjects who had normal balance on computerized dynamic posturography (CDP) and the dynamic gait index (DGI), were randomly assigned to four groups. All groups donned diagonally shift lenses and were again assessed with CDP and DGI. The four groups were then treated for 20 min. Group 1 (control group) viewed a video, Group 2 performed exercise that involved translating the entire body through space, but without separate, volitional head movement, Group 3 performed exercises which all incorporated volitional, planned head rotations, and Group 4 performed exercises that involved translating the body (as in Group 2) and incorporated volitional, planned head motion (as in Group 3). All subjects were post-tested with CDP and DGI, lenses were removed, and subjects were retested again with CDP and DGI. Results: The groups did not differ significantly on CDP scores but Groups 3 and 4 had significantly better DGI scores than Groups 1 and 2. Conclusions: Active head movement that is specifically planned as part of the exercise is more effective than passive attention or head movements that are not consciously planned, for adapting to sensorimotor change when it incorporates active use of the changed sensory modality, in this case head motion.

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Preemptive analgesic effect of lidocaine in a chronic neuropathic pain model

Arquivos de Neuro-Psiquiatria ◽

10.1590/s0004-282x2009000600024 ◽

2009 ◽

Vol 67 (4) ◽

pp. 1088-1092 ◽

Cited By ~ 6

Author(s):

Leonardo M. Batista ◽

Igor M. Batista ◽

João P. Almeida ◽

Carlos H. Carvalho ◽

Samuel B. de Castro-Costa ◽

...

Keyword(s):

Neuropathic Pain ◽

Sciatic Nerve ◽

Control Group ◽

Thermal Stimulus ◽

Lidocaine Group ◽

Local Infiltration ◽

Neuropathic Pain Model ◽

Group 3 ◽

Group 2 ◽

The Right

Preemptive analgesia inhibits the progression of pain caused by surgical lesions. To analyze the effect of lidocaine on postoperative pain relief, we performed compression of the right sciatic nerve in Wistar rats and observed the differences on behavior between the group that received lidocaine and the group that was not treated with the local anesthetics pre-operatively. Group 1 was not operated (control); group 2 underwent the sciatic nerve ligature without lidocaine; group 3, underwent surgery with previous local infiltration of lidocaine. Group 2 showed significantly longer scratching times with a peak on day 14 post-operative (p=0.0005) and reduction in the latency to both noxious (p=0.003) and non-noxious (p=0.004) thermal stimulus. Group 3 presented significantly shorter scratching times (p=0.004) and longer latency times when compared to Group 2. Preemptive use of lidocaine 2% can potentially reduce the postoperative neuropathic pain associated with sciatic nerve compression.

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Postoperative Morphine Use and Hyperalgesia Are Reduced by Preoperative but Not Intraoperative Epidural Analgesia

Anesthesiology ◽

10.1097/00000542-200306000-00023 ◽

2003 ◽

Vol 98 (6) ◽

pp. 1449-1460 ◽

Cited By ~ 78

Author(s):

Joel Katz ◽

Lorenzo Cohen ◽

Roger Schmid ◽

Vincent W.S. Chan ◽

Adarose Wowk

Keyword(s):

Morphine Consumption ◽

Gynecologic Surgery ◽

Control Group ◽

Epidural Administration ◽

Blinded Manner ◽

Group 3 ◽

Group 2 ◽

Double Blinded ◽

Postoperative Morphine ◽

Group 1

Background The aim of this study was to evaluate the postoperative morphine-sparing effects and reduction in pain and secondary mechanical hyperalgesia after preincisional or postincisional epidural administration of a local anesthetic and an opioid compared with a sham epidural control. Methods Patients undergoing major gynecologic surgery by laparotomy were randomly assigned to three groups and studied in a double-blinded manner. Group 1 received epidural lidocaine and fentanyl before incision and epidural saline 40 min after incision. Group 2 received epidural saline before incision and epidural lidocaine and fentanyl 40 min after incision. Group 3 received a sham epidural control (with saline injected into a catheter taped to the back) before and 40 min after incision. All patients underwent surgery with general anesthesia. Results One hundred forty-one patients completed the study (group 1, n = 45; group 2, n = 49; group 3, n = 47). Cumulative patient-controlled analgesia morphine consumption at 48 h was significantly lower (P = 0.04) in group 1 (89.8 +/- 43.3 mg) than group 3 (112.5 +/- 71.5 mg) but not group 2 (95.4 +/- 60.2 mg), although the hourly rate of morphine consumption between 24 and 48 h after surgery was significantly lower (P < 0.0009) in group 1 (1.25 +/- 0.02 mg/h) than group 2 (1.41 +/- 0.02 mg/h). Twenty-four hours after surgery, the visual analog scale pain score on movement was significantly less intense (P = 0.005) in group 1 (4.9 +/- 2.2 cm) than group 3 (6.0 +/- 2.6 cm) but not group 2 (5.3 +/- 2.5 cm), and the von Frey pain threshold near the wound was significantly higher (P = 0.03) in group 1 (6.4 +/- 0.6 log mg) than in group 3 (6.1 +/- 0.8 log mg) but not group 2 (6.2 +/- 0.7 log mg). Conclusions Preincisional administration of epidural lidocaine and fentanyl was associated with a significantly lower rate of morphine use, lower cumulative morphine consumption, and reduced hyperalgesia compared with a sham epidural condition. These results highlight the importance of including a standard treatment control group to avoid the problems of interpretation that arise when two-group studies of preemptive analgesia (preincisional vs. postsurgery) fail to find the anticipated effects.

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