Nsiyapnze Katte Yato Katte;Tchoffo Herve;Azafack Kana Dorice;Chongsi Margaret Mary Momo;Ngoula Ferdinand
Journal of Animal Reproduction and Biotechnology
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v.38
no.4
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pp.236-246
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2023
Background: This study helps to evaluate the Ovarian potential of Cameroonian Zebu cattle (Bos indicus) slaughtered in Etoudi - Yaoundé for implementing Assisted Reproductive Techniques (ARTs). The aim was to enhance the productivity of the cattle sub-sector in Cameroon while conserving local genetic resources. Methods: A total of 144 cows, including 94 cycled cows and 50 pregnant cows, were included in the study. Live weights were determined by measuring the thoracic perimeter of each cow using a Rondo measuring tape. Age was determined postmortem through examination of dentition and horns, while the uterus and ovaries were removed, weighed, and classified based on physiological status (pregnant or nonpregnant). Follicles were counted, and their diameters were measured and categorized into small (Ø < 3 mm), medium (Ø 3-8 mm), and large (Ø > 8 mm). Results: The results revealed an average follicular population of 32.02 ± 9.31 per cow, with 22.43 ± 8.45 small follicles, 8.42 ± 3.87 medium follicles, and 0.76 ± 0.34 large follicles. The weight of the right ovary was significantly higher than that of the left ovary (p < 0.05), and cows aged 6 to 9 years exhibited a higher number of follicles compared to other age groups. Cows with medium (BCS = 3) and large (BCS = 4-5) body reserves had the heaviest ovaries. Additionally, pregnant cows had heavier uteri compared to non-pregnant cows, and cows with a body condition score of 3 or higher had higher uterine weights than lean cows (BCS = 1-2). Conclusions: This study demonstrates that age, body condition score, and pregnancy status influence ovarian weight. Body Condition Score serves as a reliable indicator of cow nutritional status, and cows with BCS of 3-5 are excellent candidates for in vitro production of embryos.
Sun-Jung Kim;Ji-Young Park;Seung-Ho Kim;Min-Hwa Lim;Ji-Yong Yu;Kyu-Sung Han;Se-Il Park;Gwangyeob Seo;Gwangwoon Cho
Journal of Environmental Health Sciences
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v.50
no.2
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pp.93-101
/
2024
Background: As pollutants caused by non-point sources flow into rivers, river water quality monitoring for fecal pollution is becoming increasingly important. Objectives: This study was conducted to investigate the distribution of microbial communities in the Yeongsangang River water system and sewage treatment plants in Gwangju and to evaluate their antibiotic resistance. Methods: In the experiment, samples were distributed to five selective media at each point and then cultured for 18 to 24 hours. When bacteria were observed, they were sub-cultured by size and shape and identified using MALDI-TOF MS equipment. When identification was completed, 17 types of antibiotic susceptibility tests were performed using VITEK II equipment, focusing on gram-negative dominant species among the identified strains. Results: During the study period, a total of 266 strains were isolated from 39 samples. Gram-positive bacteria were 37 strains in four genera, or 13.9% of the total, and Gram-negative bacteria were 229 strains in 23 genera, or 86.1% of the total. Antibiotic susceptibility testing of 23 strains, the major dominant species, showed that one strain (4.3%) was resistant to only one antibiotic, and two strains (8.7%) were 100% susceptible to the 17 antibiotics tested. The other 20 strains (87.0%) were multidrug resistant bacteria resistant to two or more antibiotics. There were various types of multidrug resistance. Among them, penicillin and cephalosporin series showed the highest resistance. Conclusions: Based on the results of this study, it was found that the bacterial community structure changed according to regional and environmental factors, and it was judged that continuous research such as genetic analysis of antibiotic-resistant bacteria present in natural rivers is necessary.
The Journal of the Convergence on Culture Technology
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v.10
no.4
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pp.509-516
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2024
We rethink human existence as a assemblage through intersectionality by comparing autopoiesis and sympoiesis systems with reference to science fiction protagonists such as Ghost in the Shell, Neuralink, Camille, a genetic hybrid, and San Ti against the background of neo-materialism. Our findings reveal that, first, radical sympoiesis is characterized by the dissolution of individuals and boundaries, and attempt to explain existence solely through heterogeneous linkage and fusion; second, by ignoring the capacity for autonomous thinking at the individual level, they are unable to fully recognize the destructive nature of hybrid co-production or to develop practical responses to it. Third, we suggest that if the very survival of humanity is threatened by heterogeneous linkage, we should pay more attention to our identity as autonomous members of a autopoietic system rather than to heterogeneous sympoietic networks and we should also pay attention to the role of individual units in stabilizing self-regulation. Through this study, we aimed to contribute to overcoming the limitations of neo-materialism by arguing that it is likely to fail to provide an adequate practical vision if it is limited to describing the hybrid connections that recur through the intersection of beings, and by urging us to define the identity of the human species from a new perspective by utilizing various SF stories that trigger the imagination of destructive interactions between beings, and to explore the autopoiesis in terms of symbiotic interactions based on a certain level of boundary and self-regulation.
Serotonin transporter(5-HTT) is one of the major action site of antidepressants in neuronal cells. According to the recent studies, it is known that the functional polymorphism in the promoter region of the 5-HTT gene(5-HTT linked polymorphism repetitive element in promoter region, 5-HTTLPR) is associated with antidepressant responsiveness, and the distributions of 5-HTTLPR is various among the different populations. Our preliminary study suggested that it is possible to measure the endophenotype of 5-HTTLPR genotype by examining the pharmacodynamic research of the 5-HTT in platelet membranes. However, there are limitations to predicting the antidepressant responsiveness only from the endophenotypic characteristics of 5-HTT gene promoter polymorphism, and therefore we propose to use the pharmacogenomic methods for overcoming these limitations. We found that the significant correlations existed among the genetic polymorphisms of biogenic amine transporters whose structure and characteristics are similar to the 5-HTT, and the predictable odds ratio of antidepressant responsiveness are increased significantly by combining the effect with other associated polymorphisms, compared to the effect of 5-HTT promoter polymorphism only. These results support the hypothesis that antidepressant treatment has to be individualized according to the genetic and ethnic background of depressed patients. It would be possible to develope the evaluation tools to predict the antidepressant responsiveness and its side effect profile, if scientists reveal the genes related to the action mechanism as well as the metabolism of antidepressants so as to discover the interaction of those genes and contribution of endogenotypes toward antidepressant responsiveness.
Background : Non-smalll lung cancer(NSCLC) develops as a result of the accumulation of multiple genetic abnormalities. Loss of heterozygosity(LOH) is one of the most frequent genetic alterations that is found in NSCLC, and the chromosomal regions that display a high rate of LOH are thought to harbor tumor suppressor genes(TSGs). This study was done to determine the frequency of LOH in 21q with the aim of identifying potential TSG loci. Method : Thirty-nine surgically resected NSCLCs were analysed. Patients peripheral lymphocytes were used as the source of the normal DNA. Five microsatellite Inarkers of 21q were used to study LOH : 21q21.1(D21S1432, and D21S1994); 21q21.2-21.3(D21S1442) ; 21q22.1(21S1445) ; and 21q22.2-22.3(D21S266). The fractional allelic loss(FAL) in a tumor was calculated as the ratio of the number of markers showing LOH to the number of informative markers. Result : LOH for at least one locus was detected in 21 of 39 tumors(53.8%). Among the 21 tumors with LOH, 5(21.8%) showed LOH at almost all informative loci. Although statistically not significant, LOH was found more frequently in squamous cell carcinomas(15 of 23, 65.2%) than in adenocarcinomas(6 of 16, 37.5%). In the squamous cell carcinomas the frequency of LOH was higher in stage II-III (80.0%) than in stage I (53.8%). The FAL value in squamous cell carcinomas($0.431{\pm}0.375$) was significantly higher than that found in adenocarcinomas($0.l92{\pm}0.276$). Conclusion : These results suggest that LOH on 21q may be involved in the development of NSCLC, and that TSG(s) that contribute to the pathogenesis of NSCLC may exist on 21q.
Park, Gye-Young;Hwang, You-Jin;Lim, Young-Hee;An, Chang-Hyeok;Park, Jeong-Woong;Jeong, Seong-Hwan
Tuberculosis and Respiratory Diseases
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v.52
no.5
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pp.497-505
/
2002
Background : INF-${\gamma}$ plays an important role in the host response to a mycobacterial infection. A complete IFN-${\gamma}$ receptor 1 deficiency is a life threatening condition because it renders patients highly susceptible to a mycobacterial infection. Several mutations in the IFN-${\gamma}$ receptor and STAT1 gene have been identified in the rare mycobacterial infections. These mutations have partial function of the IFN-${\gamma}$ receptor and similar pathologic features to clinical tuberculosis. Materials and Methods : The function of the IFN-${\gamma}$ receptor was evaluated in the patients with clinical tuberculosis. In addition, the DNA coding sequence of the IFNgR1 and STAT1 gene was also analyzed in disseminated tuberculosis patients who might have a defective IFN-${\gamma}$ receptor. Results : The cell surface expression levels of HLA-DR and CD64 in the PMBC after being stimulation with IFN-${\gamma}$ (100IU/ml, 1000IU/ml) were increased in both controls and patients. However, the rate of increase in both groups was similar. The production of TNF-${\alpha}$ in the response to stimulation with LPS was higher in the both groups ($850.7{\pm}687.8$ vs. $836.7{\pm}564.3$ pg/ml). Pretreatment with IFN-${\gamma}$ prior to LPS stimulation resulted in further increase in TNF-${\alpha}$ production between both groups ($2203.5{\pm}242.5$ vs. $2227.5{\pm}560.4$ pg/ml). However, the rate of the increase in TNF-${\alpha}$ production in the both groups was similar. The known mutations in the IFNgR1 and STAT1 coding sequences were not found in the genomic DNA of patients with disseminated tuberculosis. Conclusion : The functional and genetic defects of the IFN-${\gamma}$ receptor were not identified in clinical tuberculosis. This suggests the defective IFN-${\gamma}$ receptor that predispoe patients to a BCG or NTM infection can not alone account for the cases of clinical tuberculosis.
The soybean stay green mutant genotype (SSG) derived from the nuclear gene, d1d2, and cytoplasmic gene, cytG, inhibit the breakdown of chloroplast in the leaves, pod walls, seed coats, and embryos during maturity. Soybean seed with black seed coat and green cotyledon (SBG) are preferred than black seed coat with yellow cotyledon (SBY) especially for cooking with rice and as source of traditional food in Korea. The researchers evaluated the seed's chlorophyll content of SSG and introduced SSG to the SBG variety breeding program. The seed chlorophyll content of SSG with d1d2 was $39.93{\sim}60.80\;{\mu}g/g$ and SSG with cytG $38.08{\sim}39.89\;{\mu}g/g$. The Korean SBG variety which was derived from SSG with cytG, contains $16.35{\sim}37.73\;{\mu}g/g$. The composition of seed chlorophyll differs according to the genetic background of SSG genotype. Inheritance study showed that cotyledon color was segregated 15:1 (yellow:green) at $F_2$ seed indicating two recessive genes control green cotyledon as revealed by previous study. Only less than 3% soybean lines showed black seed coat with green cotyledon among crosses SBY and SSG (d1d2). Results showed that SSG with d1d2 can be used as a good source for SBG with high chlorophyll content in the seed cotyledon, but due to the complex genetic behavior, breeding resource of SBG with d1d2 should be prepared to improve the breeding efficiency for development SBG variety.
Park, Myoung Hee;Song, Eun Young;Kwon, Sung Youn;Park, He Jin;Han, Sung Koo;Shim, Young Soo
Tuberculosis and Respiratory Diseases
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v.54
no.4
/
pp.367-377
/
2003
Background : It is well known that only 10% of those infected with Mycobacterium tuberculosis actually develop clinical disease, indicating the existence of host genetic factors regulating disease expression. In this study, we investigated HLA-DRB1 and -DQB1 gene polymorphisms in Korean patients with pulmonary tuberculosis (PTB). Methods : HLA-DRB1 and -DQB1 gene polymorphisms were investigated in 67 PTB patients without previous treatment history, 38 drug-sensitive (DS) and 29 multidrug-resistant (MDR) cases, and 200 healthy controls. HLA-DRB1 typing was done using reverse SSO (sequence specific oligonucleotide) and PCR-SSCP (single strand conformational polymorphism) methods and DQB1 typing was done using PCR-RFLP (restriction fragment length polymorphism), PCR-SSCP and PCR-SSP (sequence specific primer) methods. Results : Among the PTB patients, MDR-TB cases showed frequencies of DRB1*0701 and *08032 increased by about two-fold compared to those of normal controls, and likewise for their associated DQB1 alleles, DQB1*0202 and *0601 (15.5% vs. 34.5%, p=0.01). The frequency of HLA-DQB1*0609 was significantly increased in PTB patients (4.0% vs. 14.9%, p=0.004), showing similar increases in both DS and MDR cases. There was also an association of HLA alleles with the clinical severity of the disease according to the extent of lung lesion. Significantly increased frequencies of DRB1*08032 (4.2% vs. 32.6%, p=0.007) and DQB1*0601 (12.5% vs. 34.9%, p=0.047) were observed in more advanced (moderately & far advanced/DS and far advanced/MDR), compared with less advanced (minimal/DS and moderately advanced/MDR) lung lesions. Although DRB1*0701, DQB1*0202 and DQB1*0609 showed significant increases in different subsets of the disease, these HLA alleles did not show consistent association with disease severity. Conclusion : HLA-DRB1*08032 and DQB1*0601 alleles were associated with genetic susceptibility to MDR-TB in Korean patients, and also with disease severity and progression of PTB.
Hwang, Jung Hye;Koh, Won-Jung;Lee, Shin Hye;Kim, Eun Joo;Kang, Eun Hae;Suh, Gee Young;Chung, Man Pyo;Kim, Hojoong;Kwon, O Jung
Tuberculosis and Respiratory Diseases
/
v.58
no.1
/
pp.11-17
/
2005
Background : Interferon-gamma ($IFN-{\gamma}$) is essential in the immune response to mycobacterial infections, and a complete or partial deficiency in the $IFN-{\gamma}$ receptor 1 ($IFN{\gamma}R1$) or the $IFN-{\gamma}$ receptor 2 ($IFN{\gamma}R2$) have been reported to confer susceptibility to a disseminated infection with nontuberculous mycobacteria. However, similar mutations in the $IFN-{\gamma}$ receptor have not been specifically examined in the patients with clinical tuberculosis. Methods : This study searched for mutations in the $IFN-{\gamma}$ receptor gene that resulted in a partial $IFN-{\gamma}$ receptor deficiency in six patients with disseminated tuberculosis. The previously identified $IFN{\gamma}R1$ and $IFN{\gamma}R2$ coding regions were sequenced after amplification. Results : There was no partial $IFN{\gamma}R1$ deficiency including a homozygous recessive missense mutation causing an amino-acid substitution in the extracellular domain of the receptor (I87T) and a hotspot for small deletions (818delT, 818del4, 818insA) found in any of the patients. In addition, a partial $IFN{\gamma}R2$ deficiency of the homozygous missense mutation (R114C) was not found in any of the patients. Conclusion : Genetic defects causing a partial $IFN-{\gamma}$ receptor deficiency were not identified in our patients with disseminated tuberculosis.
Shin, Jong Wook;Kim, Kae-Young;Lee, Young Woo;Jung, Jae Woo;Lee, Byoung Jun;Kim, Jae-Yeol;Jo, Inho;Park, In Won;Choi, Byoung Whui
Tuberculosis and Respiratory Diseases
/
v.57
no.1
/
pp.37-46
/
2004
Background : Lung pericytes are important constituent cells of blood-air barrier in pulmonary microvasculature. These cells take part in the control of vascular contractility and permeability. In this study, it was hypothesized that change of lung pericytes might be attributable to pathologic change in microvasculature in acute lung injury. The purpose of this study was how hypoxia change proliferation and genetic expression in lung pericytes. Methods : From the lungs of several Sprague-Dawley rats, performed the primary culture of lung pericytes and subculture. Characteristics of lung pericytes were confirmed with stellate shape in light microscopy and immunocytochemistry. 2% concentration of oxygen and $200{\mu}M$$CoCl_2$ were treated to cells. Tryphan blue method and reverse transcription-polymerase chain reaction were done. Results : 1. We established methodology for primary culture of lung pericytes. 2. Hypoxia inhibited cellular proliferation in pericytes. 3. Hypoxia could markedly induce vascular endothelial growth factor(VEGF) and smad-2. 4. Hypoxia-inducible factor-$1{\alpha}$(HIF-$1{\alpha}$) was also induced by 2% oxygen. Conclusion : Viability of lung pericytes are inhibited by hypoxia. Hypoxia can stimulate expression of hypoxia-responsive genes. Pericytic change may be contributed to dysfunction of alveolar-capillary barrier in various pulmonary disorders.
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