scholarly journals Osseointegration of Ti-30Ta Implants without Primary Stability: Effect of Tranexamic Acid

2016 ◽  
Vol 869 ◽  
pp. 918-923 ◽  
Author(s):  
Maria Cristina Rosifini Alves Rezende ◽  
Bruna Cabrera Capalbo ◽  
Mario Jefferson Quirino Louzada ◽  
André Luiz Reis Rangel ◽  
Luciano Ângelo Cintra ◽  
...  
Keyword(s):  
Bone Formation ◽  
Tranexamic Acid ◽  
Primary Stability ◽  
Group Iv ◽  
Male Rats ◽  
Group Iii ◽  
Group I ◽  
Group Ii ◽  
The Right ◽  
Cp Ti

A large clot formed between the inside of the bony wall of the extraction socket and the immediate implant surface may have premature breakdown . Tranexamic acid (TXA) is fibrinolysis inhibitor and an analog of the amino acid lysine. In this paper the influence of tranexamic acid on the osseointegration of Ti-30Ta implants without primary stability was investigated. Were fabricated 32 implants of CP Titanium Grade 4 and 32 implants of Ti-30Ta alloy with dimensions of 2.1 x 2.8mm Ø. Bone defects of 2.5x3.2 mm Ø were created in right tibia of 64 Wistar male-rats using a small round bur. They were divided (n=16) into: Group I (CP-Ti machined implant), Group II (CP-Ti machined implant/ tranexamic acid), Group III (Ti-30Ta implant) and Group IV (Ti-30Ta implant/ tranexamic acid). The surgical defects of the Group II and Group IV were bathed with 20 ml of the tranexamic acid solution. The animals were euthanized at 45 days postoperative. In the right tibia of half each group (8 animals/8 tibiae) the maximum torque value necessary for manual removal of each implant was measured in Newton centimeters (Ncm). The right tibia of other half each group was subjected to non-decalcified histology processing (Stevenel's blue/Alizarin red). Data were analyzed statistically (Kruskal-Wallis Analyses) and demonstrated significant differences (P<0.05) among groups. The values of group I were significantly lower than group III and IV, but without significant difference than group II both removal torque and peri-implant bone healing. The results suggest that: a) peri-implant bone formation occurred more rapidly around the Ti-30Ta implant; b) tranexamic acid favored the stabilization of blood clot and bone formation around Ti-30Ta implants and not influenced bone formation around Ti-CP implants.

Effect of defibrinogenation on lung water accumulation after pulmonary microembolism in dogs

1980 ◽  
Vol 49 (5) ◽  
pp. 841-845 ◽  
Author(s):  
A. Johnson ◽  
A. B. Malik
Keyword(s):  
Pulmonary Edema ◽  
Extravascular Lung Water ◽  
Group Iv ◽  
Untreated Group ◽  
Lung Water ◽  
Group Iii ◽  
Control Value ◽  
Group I ◽  
Group Ii ◽  
The Right

We determined the effects of chronic fibrinogen depletion on the development of pulmonary edema after pulmonary microembolization. Dogs were defibrinogenated with a purified fraction of Malayan pitviper venom (ancrod). Studies were made in four groups: control untreated (group I); emboli untreated (group II); control defibrinogenated (group III); and emboli defibrinogenated (group IV). Fibrinogen decreased (P < 0.05) from 570.6 +/- 100.9 to 5.3 +/- 3.1 mg/100 ml in the ancrod-treated groups. Pulmonary arterial pressure was increased to similar levels in both embolized groups after infusion of 100-mug-diam nonsiliconized glass beads into the right atrium. Pulmonary vascular resistance and pulmonary perfusion pressure were initially increased to similar levels in both embolized groups, but by 75 min postembolization (PE) both parameters were higher (P < 0.05) in the defibrinogenated group. The extravascular lung water-to-bloodless dry lung ratio at 75 min PE of 4.53 +/- 0.24 in group II was greater than the control value of 2.84 +/- 0.22 in group I (P < 0.05). In contrast, the extravascular lung water-to-bloodless dry lung ratio of 3.64 +/- 0.09 in group IV was not different from the control value of 3.38 +/- 0.04 in group III, but was less than 4.53 +/- 0.24 in group II (P < 0.05). Therefore, chronic defibrinogenation in dogs prevented the development of pulmonary edema after pulmonary microembolization. The protective effect may be due to inhibition of the increase in lung vascular permeability and to a time-dependent reduction in pulmonary microvascular pressure.

scholarly journals Immunomodulatory Activity of Callyspongia sp. Extract Towards Interferon-gamma (IFN-γ) and Tumor Necrosis Factor-Alpha (TNF-α) Levels in Staphylococcus aureus –Induced Wistar Male Rats

2020 ◽  
Vol 11 (2) ◽  
pp. 9311-9317
Keyword(s):  
Staphylococcus Aureus ◽  
Phagocytic Activity ◽  
Group Iv ◽  
Male Rats ◽  
Group Iii ◽  
Group I ◽  
Tnf Α ◽  
Ifn Γ ◽  
Group Ii ◽  
Wistar Male Rats

The IFN-γ and TNF-α are cytokines that involved in the phagocytic activity, and Callypsongia sp. increases phagocytic activity; thus, this study aims to investigate the effect of Callspongia sp. extract toward IFN-γ and TNF-α levels in Staphylococcus aureus-induced Wistar male rats. The animals were divided into four groups (n=5) and treated orally for 7 d as follows: Group I (extract dose of 300 mg/kgBW); Group II (extract dose of 400 mg/kgBW); Group III (Phylantii extract); and Group IV (0.5% NaCMC). On day 8, animals were infected with Staphylococcus aureus intraperitoneally and left for 1h. Blood was collected and assayed with ELISA Kit for IFN-γ and TNF-α. Data collected were then statistically analyzed using SPSS. According to results obtained, the Callyspongia sp. extract effect in both IFN-γ and TNF-α is significantly different from Group IV as the negative control (p<0.05). Callyspongia sp. extract provided similar potency between Group I and Group III (p>0.05), yet Group II provided higher activity in increasing IFN-γ levels. In contrast, Callyspongia sp. provided similar activity between Group I, Group II, and Group III to increase TNF-α levels (p>0.05). Therefore, we concluded that Callyspongia sp. extract increases both INF-γ and TNF-α, responsible for the phagocytic activity.

scholarly journals Effect and mechanisms of reproductive tract infection on oxidative stress parameters, sperm DNA fragmentation, and semen quality in infertile males

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Kang-Sheng Liu ◽  
Xiao-Dong Mao ◽  
Feng Pan ◽  
Rui Fang An
Keyword(s):  
Reproductive Medicine ◽  
Reproductive Tract ◽  
Group Iv ◽  
Semen Parameters ◽  
Group Iii ◽  
Reproductive Tract Infection ◽  
Group I ◽  
Sperm Dna ◽  
Group Ii ◽  
Elastase Level

AbstractRecent years have seen a rising incidence of male infertility, mostly caused by the decline of sperm quality. The ratio of infertile males to infertile females has escalated from 3:7 in 2013 to current 5:5, which turns male infertility into the research focus of reproductive medicine. This study aimed to clarify the effect of reproductive tract infection by ureaplasma urealyticum (UU) and chlamydia trachomatis (CT) on the DNA integrity and routine semen parameters of infertile males. A retrospective study was performed. A total of 259 infertile males who were treated at the Andrological Laboratory Examination and Reproductive Medicine Center in our hospital were analyzed. qRT-PCR was used to examine the infection status of CT and UU. According to the eligibility criteria, we evaluated the semen parameters and biochemical data of 253 men. Based on the results of PCR, the subjects were divided into four groups: Group I (CT positive, 63 cases), Group II (UU positive, 60 cases), Group III (CT positive and UU positive, 62 cases), and Group IV (no infection, 68 cases). DNA fragmentation index (DFI), sperm count, vitality and morphology, elastase level, seminal plasma malondialdehyde (MDA), and total antioxidant capacity (TAC) were assessed. Compared to Group IV, three groups (Group I, Group II and Group III) showed difference in semen volume, proportion of sperm with normal morphology, sperm motility, progressive motility, and vitality (P < 0.05). Compared to Group IV, Group II and Group III showed difference in DFI (P < 0.05). Compared to Group IV, Group II and Group III showed difference in elastase level (P < 0.05). VCL, VSL, VAP, WOB, ROS, TM, HDS showed differences between groups of abnormal/normal WBC (*P < 0.01).UU infection significantly increased the level of seminal leukocytes only in Group II, but not in the other three groups, indicating that UU is a factor to increase the level of seminal leukocytes. Compared with the normal leukocyte group, there were significant differences in total motility, forward motility and normal sperm ratio between the two groups. The proportion of sperm with abnormal morphology (mostly in the head) showed obvious difference between groups of high and normal seminal leukocytic levels. At the same time, in this study, SCGE and SCD verified that leukocytes could damage sperm DNA by increasing ROS, which ultimately affects male fertility.

A Study on the Effect of Samoa Extract (Cleome droserifolia) on Sperm Quality in Male Albino Rats Exposed to Pyrethroid

2021 ◽  
pp. 39-45
Author(s):  
Nura I. Al-Zail ◽  
Salah F. Kamies
Keyword(s):  
Sperm Quality ◽  
Group Iv ◽  
Male Rats ◽  
Control Group ◽  
Albino Rats ◽  
Protective Agent ◽  
Group V ◽  
Group Iii ◽  
Group I ◽  
Induced Changes

Pyrethroid cyhalothrin (PC) is an insecticide that is used worldwide for pest control in agriculture and household use. Samoa extract (SE) is a potent antioxidant protecting cells from oxidative stress. The present study investigates the protective and therapeutic effect of SE on PC-induced changes in sperm quality in male rats. Fifty adult male albino rats were divided into five groups: group I: served as control; group II: received PC i.p. only (6.2 mg/kg b.wt.); group III: received SE only (100 mg/kg b.wt., p.o.) for eight weeks; group IV: received SE as a protective agent daily for eight weeks, then followed by the administration of PC (i.p.) three times a week for two weeks; group V: exposed to PC (i.p.) three times a week for two weeks, then treated with the SE daily for 8 weeks. Results showed that PC caused markedly impaired sperm quality (a count, viability, motility, and abnormality). Compared to PC-treated animals, SE in the protective group markedly restored the alteration of sperm indices. However, SE in the curative group was found to be less effective in restoring PC-induced alterations. In conclusion, the data of this study revealed that the SE as a protective agent is more effective than as a therapeutic agent. Keywords: Samoa; Pyrethroid; Sperm quality; Rat

Effect of amino acid infusion on renal hemodynamics in humans: a dose-response study

1994 ◽  
Vol 267 (5) ◽  
pp. F703-F708 ◽  
Author(s):  
M. Giordano ◽  
P. Castellino ◽  
E. L. McConnell ◽  
R. A. DeFronzo
Keyword(s):  
Amino Acid ◽  
Dose Response ◽  
Renal Hemodynamics ◽  
Group Iv ◽  
Group V ◽  
Group Iii ◽  
Amino Acid Infusion ◽  
Group I ◽  
Basal Plasma ◽  
Group Ii

We evaluated the dose-response relationship between the plasma amino acid (AA) concentration and renal hemodynamics in eight normal subjects. After an overnight fast, a balanced 10% AA solution was infused for 180 min at five separate infusion rates: 0.5 (group I), 1.0 (group II), 2.0 (group III), 4.0 (group IV), and 6.0 (group V) ml.kg-1.min-1 on separate days. Basal plasma AA concentration was 1.87 +/- 0.1 mmol/l and increased to 2.26 +/- 0.1 (group I), 2.66 +/- 0.2 (group II), 3.79 +/- 0.5 (group III), 5.81 +/- 0.4 (group IV), and 7.41 +/- 0.4 mmol/l (group V). Basal glomerular filtration rate (GFR) and renal plasma flow (RPF) averaged 95 +/- 4 and 476 +/- 29 ml.1.73 m-2.min-1, respectively, and rose to 98 +/- 5 and 506 +/- 40 (group I) [P = not significant (NS)], 102 +/- 3 and 533 +/- 30 (group II) (P < 0.05 vs. basal), 110 +/- 4 and 567 +/- 29 (group III), 115 +/- 7 and 610 +/- 55 (group IV), and 117 +/- 7 and 614 +/- 66 ml.1.73 m-2.min-1 (group V) (P = NS vs. group IV). Basal plasma glucagon concentration averaged 68 +/- 10 pg/ml and increased to 74 +/- 10 (group I), 83 +/- 11 (group II) (P < 0.05 vs. basal), 100 +/- 14 (group III), 121 +/- 14 (group IV), and 229 +/- 35 pg/ml (group V) (P < 0.01 vs. basal). Increases in plasma growth hormone (GH) and insulin levels were observed only during groups IV and V.(ABSTRACT TRUNCATED AT 250 WORDS)

scholarly journals Effect of concurrent exposure of toxic concentrations of lead and endosulfan on oxidative stress indices in rats

2021 ◽  
Vol 10 (3) ◽  
pp. 192-195
Author(s):  
Ranganathan V ◽  
◽  
Malik JK ◽  
Rao GS ◽  
◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Reduced Glutathione ◽  
Group Iv ◽  
Male Rats ◽  
Technical Grade ◽  
Stress Indices ◽  
Group Iii ◽  
Group I ◽  
Male Wistar Rats ◽  
Toxic Concentrations

The effect of concurrent exposure of toxic concentrations of lead and endosulfan were evaluated on oxidative stress parameters in male wistar rats. Group I served as untreated control whereas Group II received drinking water containing lead as lead acetate @1000 ppm (Pb1000). Group III was exposed to feed containing technical grade endosulfan @ 100 ppm (E100). Group IV was exposed to Pb (1000) +E (100). All the treatments were given daily for 28 days. Combination of lead and endosulfan modified the indices of oxidative stress in the parameters such as lipid peroxidation, reduced glutathione, superoxide dismutase and catalase in rats as compared to their individual compounds. The results suggest that the combination of these individual compounds may have the potential to modify oxidative stress produced by single compounds in male rats

scholarly journals Pathomechanism of Insulin Resistance in Men with Central Obesity: Correlation of GGT, GPx, hs-CRP and Plasma Total Cysteine

2013 ◽  
Vol 5 (2) ◽  
pp. 101 ◽  
Author(s):  
Ritawaty Ritawaty ◽  
Indriyanti Rafi Sukmawati ◽  
Ilhamjaya Patellongi ◽  
Ferry Sandra
Keyword(s):  
Oxidative Stress ◽  
Insulin Resistance ◽  
Amino Acid ◽  
Fatty Liver ◽  
Central Obesity ◽  
Group Iv ◽  
Group Iii ◽  
Group I ◽  
Group Ii ◽  
Hs Crp

BACKGROUND: Gamma glutamyltransferase (GGT) was reported recently to be associated with inflammation, oxidative stress and increased amino acid. However, role of GGT in insulin resistance pathomechanism is not exactly known. Therefore correlation of GGT with inflammation, oxidative stress and elevated amino acid, in men with central obesity need to be confirmed.METHODS: A cross-sectional study was designed. Men with central obesity were recruited and selected. Anthropometric parameters, creatinine, hs-CRP, fasting glucose, fasting insulin, glutathione peroxidase (GPx) activity, GGT, plasma total cysteine (tCys) and fatty liver were measured. Subjects were then divided in 4 groups based on waist circumference (WC) and fatty liver: Group I: WC ≤100 cm, without fatty liver; Group II: WC ≤100 cm, with fatty liver; Group III: WC >100 cm, without fatty liver; Group IV: WC >100 cm, with fatty liver. All biochemical characteristics in each group were then statistically analyzed.RESULTS: Seventy-two men with central obesity were selected. Numbers of subjects in each group were: Group I: n=33; Group II: n=5; Group III: n=17; Group IV: n=17. We found significant difference of HOMA-IR between Group I and IV, significant correlation between GGT and HOMAIR, and significant negative correlation between tCys with HOMA-IR in Group IV.CONCLUSION: GGT was significantly correlated with HOMA-IR in men with WC >100 cm and fatty liver. Further investigation with more subjects is necessary to determine clear GGT cut-off to distinguish subjects with fatty liver and insulin resistance.KEYWORDS: GGT, hs-CRP, GPx, tCys, HOMA-IR, insulin resistance

scholarly journals Analyses of the results in the treatment of locally advanced hypopharyngeal carcinoma with different therapeutic approach

2009 ◽  
Vol 56 (1) ◽  
pp. 35-40 ◽  
Author(s):  
A. Mikic ◽  
I. Pendjer ◽  
Z. Dudvarski ◽  
A. Trivic ◽  
M. Kreacic
Keyword(s):  
Neoadjuvant Chemotherapy ◽  
Postoperative Radiotherapy ◽  
Locally Advanced ◽  
Group Iv ◽  
Hypopharyngeal Carcinoma ◽  
Group Iii ◽  
Group I ◽  
Primary Radiotherapy ◽  
Group Ii ◽  
Number Of Authors

Introduction: treatment of locoregional advanced hypopharyngeal cancers of grades III and IV would be surgery and/or radiotherapy. An increasing number of authors has emphasized favorable effects of neoadjuvant chemotherapy and radiotherapy with potentiation. The aim: the authors presented therapeutical results of three-year survived patients with squamocellular cancers of the hypopharynx (SCC Hy), grades III and IV, in relation to specific modalities of therapeutical approach. Methods: a series of 207 patients with grades III and IV of SCC Hy, treated in the period 1982 to 2002, was analyzed. Group I consisted of 131 patients who had surgery and postoperative radiotherapy (SUR-RT). Group II included 16 patients who underwent induction chemotherapy, surgery and postoperative radiotherapy (IC-SURRT). Group III consisted of 60 patients, who had primary radiotherapy (RT). Group IV involved 29 patients who were treated, in the period 2003-2006, by neoadjuvant chemotherapy followed by radiotherapy with potentiation (CHT-RT). Results: three-year survival in Group I was 67.94%, Group II - 50%, Group III - 30%, and in Group IV was 51.72%. Five-year survival was analyzed only in group IIII. The longest survival was observed in Group I - 33.59%. Conclusion: the best therapeutical results were achieved in patient group that was primarily operated on and then had postoperative radiotherapy, while the worst survival was recorded in patients who had primary radiotherapy.

scholarly journals Microbiome signature and diversity regulates the level of energy production under anaerobic condition

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
M. Shaminur Rahman ◽  
M. Nazmul Hoque ◽  
Joynob Akter Puspo ◽  
M. Rafiul Islam ◽  
Niloy Das ◽  
...  
Keyword(s):  
Indicator Species ◽  
Energy Production ◽  
Environmental Temperature ◽  
Group Iv ◽  
Methanosarcina Barkeri ◽  
Spearman Correlation ◽  
Positive Correlation ◽  
Group Iii ◽  
Group I ◽  
Group Ii

AbstractThe microbiome of the anaerobic digester (AD) regulates the level of energy production. To assess the microbiome diversity and composition in different stages of anaerobic digestion, we collected 16 samples from the AD of cow dung (CD) origin. The samples were categorized into four groups (Group-I, Group-II, Group-III and Group-IV) based on the level of energy production (CH4%), and sequenced through whole metagenome sequencing (WMS). Group-I (n = 2) belonged to initial time of energy production whereas Group-II (n = 5), Group-III (n = 5), and Group-IV (n = 4) had 21–34%, 47–58% and 71–74% of CH4, respectively. The physicochemical analysis revealed that level of energy production (CH4%) had significant positive correlation with digester pH (r = 0.92, p < 0.001), O2 level (%) (r = 0.54, p < 0.05), and environmental temperature (°C) (r = 0.57, p < 0.05). The WMS data mapped to 2800 distinct bacterial, archaeal and viral genomes through PathoScope (PS) and MG-RAST (MR) analyses. We detected 768, 1421, 1819 and 1774 bacterial strains in Group-I, Group-II, Group-III and Group-IV, respectively through PS analysis which were represented by Firmicutes, Bacteroidetes, Proteobacteria, Actinobacteria, Spirochaetes and Fibrobacteres phyla (> 93.0% of the total abundances). Simultaneously, 343 archaeal strains were detected, of which 95.90% strains shared across four metagenomes. We identified 43 dominant species including 31 bacterial and 12 archaeal species in AD microbiomes, of which only archaea showed positive correlation with digester pH, CH4 concentration, pressure and temperature (Spearman correlation; r > 0.6, p < 0.01). The indicator species analysis showed that the species Methanosarcina vacuolate, Dehalococcoides mccartyi, Methanosarcina sp. Kolksee and Methanosarcina barkeri were highly specific for energy production. The correlation network analysis showed that different strains of Euryarcheota and Firmicutes phyla exhibited significant correlation (p = 0.021, Kruskal–Wallis test; with a cutoff of 1.0) with the highest level (74.1%) of energy production (Group-IV). In addition, top CH4 producing microbiomes showed increased genomic functional activities related to one carbon and biotin metabolism, oxidative stress, proteolytic pathways, membrane-type-1-matrix-metalloproteinase (MT1-MMP) pericellular network, acetyl-CoA production, motility and chemotaxis. Importantly, the physicochemical properties of the AD including pH, CH4 concentration (%), pressure, temperature and environmental temperature were found to be positively correlated with these genomic functional potentials and distribution of ARGs and metal resistance pathways (Spearman correlation; r > 0.5, p < 0.01). This study reveals distinct changes in composition and diversity of the AD microbiomes including different indicator species, and their genomic features that are highly specific for energy production.

scholarly journals Assessment of Outcome of Intrathecal Analgesia in Multiparous Women Undergoing Vaginal Delivery

2020 ◽  
Vol 5 (1) ◽  
pp. 153-155
Author(s):  
Sanjay Melville Masih ◽  
Rakesh Kumar Gupta
Keyword(s):  
Vaginal Delivery ◽  
Group Iv ◽  
Normal Vaginal Delivery ◽  
Secondary Outcome ◽  
Group Iii ◽  
Group I ◽  
Significant Difference ◽  
Multiparous Women ◽  
Group Ii ◽  
Intrathecal Analgesia

Background: The present study was conducted to assess the outcome of intrathecal analgesia in multiparous women undergoing vaginal delivery. Subjects and Methods: The present study was conducted among 80 multiparous women ages ranged 18- 40 years. All patients received 0.5 ml of intrathecal injection of 2.5 mg bupivacaine 0.5% and 1 ml dexamethasone 4 mg plus a 0.5 ml adjuvant. The adjuvants in group I patients were 100 μg morphine, 25 μg fentanyl in group II, 5 μg dexmedetomidine in group III and normal saline in group IV (control group). The primary and secondary outcome was the duration of pain relief, the analgesia onset time, the maximum level of sensory block, the visual analogue scale (VAS) was recorded. Results: The mean duration of analgesia in group I was 182.4 minutes, in group II was 170.5 minutes, in group III was 200.4 minutes and in group, IV was 140.2 minutes. The onset of analgesia was 3.9 minutes, 2.8 minutes, 2.7 minutes and 4.5 minutes in group I, II, III and IV respectively. S1 sensory regression time (minutes) was 181.4, 157.4, 185.3 and 130.6 in group I, II, III and IV respectively. Modified Bromage scale 5 minutes, 15 minutes and 30 minutes after IT in all groups was 0.0. VAS was 1.3, 1.6, 1.6 and 3.1 with significant differences in all groups (P< 0.05). There was non- significant difference in mean age, weight, height and gestational age between all groups (P> 0.05). There was a non- significant difference in APGAR 1, 5, umbilical pH immediately after delivery, neonatal HR after 5minute, 15 minutes and 30 minutes in all groups (P> 0.05). Conclusion: The authors found that dexmedetomidine is a safe and effective adjuvant to intrathecal bupivacaine-dexamethasone in multiparous women undergoing normal vaginal delivery.

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